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    Appendix Appendix Document Transcript

    • Tec Trimix Instructor Guide AppendixAppendixTable of ContentsDeep Stop Calculation Table – METRIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-48Deep Stop Calculation Table – IMPERIAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-49DSAT Tec Trimi Diver Course Key Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-5Emergency Procedures Slate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-50Knowledge Reviews Chapter ONE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-9 Chapter TWO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-13 Chapter THREE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-16 Chapter FOUR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-18Tec Diving Liability Release . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-51Tec Diving Statement of Understanding and Learning Agreement . . . . . . . . . . .A-53Tec Trimix Diver Exam Answer Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-20Tec Trimix Diver Exam A Answer Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-21Tec Trimix Diver Exam B Answer Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-22Tec Trimix Instructor Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-3Trimix Oxygen Management Table – METRIC . . . . . . . . . . . . . . . . . . . . . . . . . . .A-25Trimix Oxygen Management Table – IMPERIAL . . . . . . . . . . . . . . . . . . . . . . . . . .A-34Trimix Sac Conversion Factors – METRIC and IMPERIAL . . . . . . . . . . . . . . . . . . .A-43Trimix Equivalent Narcotic Depth Table – METRIC . . . . . . . . . . . . . . . . . . . . . . . .A-44Trimix Equivalent Narcotic Depth Table – IMPERIAL . . . . . . . . . . . . . . . . . . . . . .A-45Trimix Maximum Depths in Metres of Seawater . . . . . . . . . . . . . . . . . . . . . . . . . .A-46Trimix Maximum Depths in Feet of Seawater . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-47Trimix Fill Decal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-54padi.com A-1
    • Appendix Tec Trimix Instructor Guide A-2 padi.com
    • TEC TRIMIX INSTRUCTOR APPLICATION PLEASE PRINT OR TYPE □ Check here if this is a change of addressName_____________________________________________________________ PADI No. _____________________ First Initial LastMailing Address __________________________________________________________________________________City____________________________________________________ State/Province____________________________Country__________________________________________ Zip/Postal Code _________________________________Home Phone (______) ___________________________ Business Phone (______) ____________________________Fax (_____) _____________________________ Email Address ____________________________________________Sex: □ M □ F Birthdate _____________________ Occupation _____________________________________ Day/Month/Year Requirements: To apply for the DSAT Tec Trimix Instructor rating you must meet the following requirements. Refer to the DSAT Tec Trimix Diver Instructor Guide for specifics. Direct questions on qualifying certifications to the PADI Training and Quality Management Department. □ PADI Master Scuba Diver Trainer (or higher) Rating □ DSAT Tec Trimix Diver (or qualifying certification*) □ DSAT Tec Deep Instructor □ I am at least 21 years old. * If submitting qualifying certification from another training organization, please be sure to attach photocopies of the certification.PAYMENT METHODApplication Fee____________________________ Check No._________________________Check for PADI Americas only – Must be payable to PADI in US dollars, and drawn on a US bank. American Express Discover Card MasterCard VISA JCB Tape/Attach aSwitch/Solo Issue No. ___________________________ (Not Valid in USA) 4.5cm x 5.7cm 1.75” x 2.25”Expiration Date ______________________ (Valid from Date – UK Only) __________________ Head-and-Shoulders PhotoCard No. ________________ ________________ ________________ ________________ PRINT NAME ONCardholder Name ________________________________________________________________ Please Print BACK OF PHOTOAuthorized Signature _______________________________________________________ Coin machine photos OKCardholder Address _______________________________________________________ (If different from applicant.) Do not send old cards NO DARK GLASSES_______________________________________________________________________________________________________________________MAIL TO YOUR PADI OFFICEAttn: DSAT Tec Trimix Instructor Certification CHECKLISTSee current price list for mailing information. Please be sure to □ Application filled-in completelyenclose all required materials (see checklist). □ Requirements completed □ Successfully completed Tec TrimixRec’d ________________________ Ent ______________________ Standards and Theory/Practical Exams □ Verification of logged divesShp’d________________________ □ Verification of course assistance □ Enclosed processing fee (see current price list) OFFICE USE ONLY □ Applicant and Instructor signatures Reviewer _______________________ Certification Date _________________padi.com A-3
    • Instructor Signatures: The verifying Instructors must be a DSAT Tec Trimix Instructor or a PADI Instructor with a qualifying certification. Logged Dive Verification: I have verified that the applicant has logged at least 350 dives with at least 50 decompres- sion dives deeper than 40 metres/130 feet, not including those required for certification as a technical diver. Verifying Instructor _____________________________________ PADI No. _______________ Date ___________________ Signature Day/Month/Year Logged Trimix Diver Verification: I have verified that the applicant has logged at least 30 dives deeper than 40 metres/130 feet using trimix as the bottom gas, with at least 10 of these dives deeper than 50 metres/165 feet using trimix with less than 21 percent oxygen. Verifying Instructor _____________________________________ PADI No. _______________ Date ___________________ Signature Day/Month/Year Course Assistance Verification: I have verified that the applicant has assisted with at least one DSAT Tec Trimix Diver course.* If applicant has a qualifying certification as a trimix instructor with another organization, having taught or assisted with one of those courses meets this requirement. (Contact your PADI office for information about qualifying certifications and proper documentation.) Verifying Instructor _____________________________________ PADI No. _______________ Date ___________________ Signature Day/Month/Year Tec Trimix Instructor Exams: I have verified that the applicant has successfully completed the Tec Trimix Instructor Standards Exam and Tec Trimix Instructor Theory and Practical Application Exam. Verifying Instructor _____________________________________ PADI No. _______________ Date ___________________ Signature Day/Month/Year If Applicable: Dive Center/Resort Name ____________________________________ Store No. ___________ Phone (_____)___________ *When meeting this requirement by qualifying certification enclose a copy of your trimix instructor certification and contact your local PADI Office regarding any additional required documents.Applicant AcknowledgementI certify that the information contained here is true and correct to the best of my knowledge andunderstand that this certification is subject to approval by PADI.Applicant Signature_______________________________________________ Date___________________ Signature Day/Month/Year padi.com A-4
    • Tec Trimix Instructor Guide AppendixDSAT Tec Trimix Diver CourseKey StandardsMinimum Instructor Rating, All Dives:Renewed PADI Instructor with Tec Trimix Instructor rating.Assessment DiveRatios: 6 students to 1 instructor, with 2 more students permitted with a certifiedassistant to a maximum of 8.Minimum Certified Assistant Qualifications: Renewed PADI Divemaster or higher levelPADI Member who is a certified PADI Enriched Air Diver and certified as a DSATTec Deep Diver or a qualifying same level certification from another trainingorganization. 18 years or older.Minimum Depth: Water in which it is too deep to standMaximum Depth: 18 metres/60 feetBottom Gas: Air/enriched airNote that the Assessment Dive is optional for certi-fied Tec Deep Divers who have made a technicaldecompression dive deeper than 40 metres/130 feetin the previous six months. It is required for studentdivers entering the Tec Trimix Diver course with aqualifying prerequisite certification from anothertraining organization.padi.com A-5
    • Appendix Tec Trimix Instructor GuideTraining Dive OneRatios: 6 students to 1 instructor, with 2 more students permitted with a certifiedassistant to a maximum of 8.Minimum Certified Assistant Qualifications: Renewed PADI Divemaster or higher levelPADI Member who is a certified PADI Enriched Air Diver and certified as a DSAT TecDeep Diver or a qualifying same level certification from another training organiza-tion. 18 years or older.Minimum Depth: Water in which it is too deep to standMaximum Depth: 18 metres/60 feetBottom Gas: Air/enriched airTraining Dive TwoRatios: 2 students to 1 instructor, with 1 more student permitted with a certifiedassistant to a maximum of 3.Minimum Certified Assistant Qualifications: Renewed PADI Divemaster or higher levelPADI Member who is a certified PADI Enriched Air Diver and certified as a DSAT TecTrimix Diver or a qualifying full trimix diver from another training organization. Theindividual must have made at least 20 technical decompression dives to 40metres/130 feet or deeper, beyond those required for certification. 18 years or older.Minimum Depth: 27 metres/90 feetMaximum Depth: 50 metres/165 feetBottom Gas: Air/enriched airNote that Training Dive Two is optional for students certified as DSAT Tec Deep Divers whowere certified in the previous six months or who have logged at least one technical decom-pression dive requiring a decompression cylinder to 40 metres/130 feet or deeper in the previ-ous six months. It is required for student divers entering the Tec Trimix Diver course with aqualifying prerequisite certification from another training organization.Training Dive ThreeRatios: 2 students to 1 instructor, with 1 more student permittedwith a certified assistant to a maximum of 3.Minimum Certified Assistant Qualifications: Renewed PADIDivemaster or higher level PADI Member who is a certifiedPADI Enriched Air Diver and certified as a DSAT Tec TrimixDiver or a qualifying full trimix diver from another trainingorganization. The individual must have made at least 20 tech-nical decompression dives to 40 metres/130 feet or deeper,beyond those required for certification. 18 years or older.Minimum Depth: 30 metres/100 feetMaximum Depth: 50 metres/165 feetBottom Gas: Normoxic trimix A-6 padi.com
    • Tec Trimix Instructor Guide AppendixTraining Dive FourRatios: 2 students to 1 instructor, with 1 more student permitted with a certifiedassistant to a maximum of 3.Minimum Certified Assistant Qualifications: Renewed PADI Divemaster or higher levelPADI Member who is a certified PADI Enriched Air Diver and certified as a DSAT TecTrimix Diver or a qualifying full trimix diver from another training organization.The individual must have made at least 250 dives, with at least 40 technical decom-pression dives deeper than 40 metres/130 feet of which at least 20 are trimix decom-pression dives, beyond those required for certification. The individual must alsohave experience diving with trimix to the actual depth of each training dive. 18years or older.Minimum Depth: 40 metres/130 feetMaximum Depth: 55 metres/185 feetBottom Gas: Normoxic trimixNote that Training Dive Four is optional for students certified as DSAT Tec Deep Divers. Itis required for student divers entering the Tec Trimix Diver course with a qualifying prereq-uisite certification from another training organization.Training Dive FiveRatios: 2 students to 1 instructor, with 1 more studentpermitted with a certified assistant to a maximum of 3.Minimum Certified Assistant Qualifications: Renewed PADIDivemaster or higher level PADI Member who is a certi-fied PADI Enriched Air Diver and certified as a DSAT TecTrimix Diver or a qualifying full trimix diver from anoth-er training organization. The individual must have madeat least 250 dives, with at least 40 technical decompres-sion dives deeper than 40 metres/130 feet of which atleast 20 are trimix decompression dives, beyond thoserequired for certification. The individual must also haveexperience diving with trimix to the actual depth ofeach training dive. 18 years or older.Minimum Depth: 45 metres/150 feetMaximum Depth: 67 metres/220 feetBottom Gas: TMx 16 to 21 percent oxygenTraining Dive SixRatios: 2 students to 1 instructor, with 1 more student permitted with a certifiedassistant to a maximum of 3.Minimum Certified Assistant Qualifications: Renewed PADI Divemaster or higher levelPADI Member who is a certified PADI Enriched Air Diver and certified as a DSAT TecTrimix Diver or a qualifying full trimix diver from another training organization.padi.com A-7
    • Appendix Tec Trimix Instructor GuideThe individual must have made at least 250 dives, with at least 40 technical decom-pression dives deeper than 40 metres/130 feet of which at least 20 are trimix decom-pression dives, beyond those required for certification. The individual must also haveexperience diving with trimix to the actual depth of each training dive. 18 years orolder.Minimum Depth: 45 metres/150 feetMaximum Depth: 67 metres/220 feetBottom Gas: TMx 16 to 21 percent oxygen, END 40 metres/130 feet or lessTraining Dive SevenRatios: 2 students to 1 instructor, with 1 more student permitted with a certifiedassistant to a maximum of 3.Minimum Certified Assistant Qualifications: Renewed PADI Divemaster or higher levelPADI Member who is a certified PADI Enriched Air Diver and certified as a DSAT TecTrimix Diver or a qualifying full trimix diver from another training organization. Theindividual must have made at least 250 dives, with at least 40 technical decompres-sion dives deeper than 40 metres/130 feet of which at least 20 are trimix decompres-sion dives, beyond those required for certification. The individual must also haveexperience diving with trimix to theactual depth of each training dive.18 years or older.Minimum Depth: 52 metres/170 feetMaximum Depth: 75 metres/245 feetBottom Gas:TMx 16 to 21 percent oxygen,END 40 metres/130 feet or lessTraining Dive EightRatios: 2 students to 1 instructor, with 1more student permitted with a certifiedassistant to a maximum of 3.Minimum Certified Assistant Qualifications: Renewed PADI Divemaster or higher levelPADI Member who is a certified PADI Enriched Air Diver and certified as a DSAT TecTrimix Diver or a qualifying full trimix diver from another training organization. Theindividual must have made at least 250 dives, with at least 40 technical decompres-sion dives deeper than 40 metres/130 feet of which at least 20 are trimix decompres-sion dives, beyond those required for certification. The individual must also haveexperience diving with trimix to the actual depth of each training dive. 18 years orolder.Minimum Depth: 55 metres/180 feetMaximum Depth: 75 metres/245 feetBottom Gas: TMx 16 to 21 percent oxygen, END 40 metres/130 feet or less A-8 padi.com
    • Tec Trimix Instructor Guide AppendixKnowledge Review –Chapter ONEPlease complete this review, and remove it from the manual to hand in to your instructor. Ifthere’s something you don’t understand, review the related material. If you still don’t under-stand, be sure to have your instructor explain it to you. 1. Is a gas blend of 19 percent oxygen, 33 percent helium and 48 percent nitro- gen a trimix? If so, is it a normoxic trimix, and how would you write the abbreviation for it? Yes it is trimix. It is not normoxic trimix. You would abbreviate it TMx 19/33. 2. What are three benefits and three drawbacks of diving with trimix? Benefits 1. Reduced narcosis 2. Reduced oxygen exposure 3. Reduced breathing resistance Drawbacks 1. Expense 2. Longer Deco times 3. More complex logistics and planning 3. Below what depth is trimix the broad community standard for all diving? Below what depth for overhead environments or complex environments? To what depth is the typical range for new, beginning trimix divers, assuming experience at that depth during training? Below 50 metres/165 feet trimix is the broad community standard for all diving. Below 40 metres/130 feet for overhead or complex environments. To 75 metres/245 feet is the range for new, begin- ning trimix divers. 4. Trimix can be made several ways. Describe how trimix is made by partial pres- sure blending with enriched air. The blender adds premixed enriched air to a cylinder with helium to produce the desired trimix. 5. How do you analyze trimix? Is a helium analyzer mandatory? How might a helium analyzer offset the cost of investing in one? You analyze trimix like EANx, with an oxygen analyzer to within 1% of desired blend. Helium analyzer is not mandatory. Helium analyzerspadi.com A-9
    • Appendix Tec Trimix Instructor Guide make it possible to blend up partially filled trimix cylinders, which can offset helium costs over time. 6. What information should appear on all cylinders used in a trimix dive? Labels and marking identifying the gas, the analyzed blend, the diver’s name and the blend’s maximum depth. 7. Describe two ways you can carry four stage/deco cylinders on a trimix dive. You can carry all cylinders on the left, two stacked and two trailed. You can carry on the right and left, high oxygen cylinders right and low oxygen left. The cylinders may be worn stacked, or one worn each side and the other two trailed. 8. Explain the two problems with using trimix in a dry suit. How do you avoid these? Helium conducts heat rapidly so you will get cold. Isobaric counter- diffusion is possible when you’re breathing a heavy gas surrounded by a light gas (helium). You avoid both by using a separate inflation system, ideally with argon. 9. What is the general recommendation regarding how deep you take a cylin- der, and what is the issue with this recommendation in trimix diving? The recommendation is to never take a cylinder deeper than you can breathe it. In trimix diving, if you lose your deco cylinders, you won’t be able to deco adequately, so the priority is to not lose them by wearing them the entire dive if necessary.10. Describe the procedures for gas switches with the two ways you can carry four stage/deco cylinders on a trimix dive? You always use NO TOX procedures. For all left, you always breathe cylinder on top. At switch, trail. You can move cylinders up under one in use, or wear one and trail three. For right, left, you breathe top then bottom on left and then top then bottom on right. It’s common to trail top cylinder after finishing with it.11. How precise should a decompression stop be? Why is this important on a trimix dive? You want to stay within .6 metres/2 feet of stop depth or better. It’s important because helium’s rapid diffusion makes it less tolerant of deco stop errors. A-10 padi.com
    • Tec Trimix Instructor Guide Appendix12. List five reasons why the use of desktop decompression software is standard practice in trimix diving. 1. Theoretically there are 100s of possible mixes. 2. It simplifies gas use calculations. 3. You can customize deep stops or use Tmx for deco. 4. It easily generates contingency tables. 5. You need it even with a multigas dive computer since dive computers do not calculate gas consumption prior to the dive.13. Name the two basic categories of decompression models found in desktop deco software and list the basic attributes that distinguish them. Neo-Haldanean: assumes no bubbles. Tends to bring divers up as shallow as possible quickly. Lots of field data and testsing. Bubble models: assumes bubbles form and tries to prevent them. More stops beginning deeper,but often shorter over all deco. Relatively little field data and testing.14. METRIC You’re planning a dive to 57 metres for 30 minutes using TMx21/35. Using deco software and inserting deep stops, you plan to decom- press at 40 metres, 30 metres, 27 metres and 24 metres for 1 minute each using bottom mix, 21 metres for 1 minute, 18 metres for 2 minutes, 15 metres for 4 minutes, 12 metres for 6 minutes and 9 metres for 8 minutes using EANx50, and 6 metres for 5 minutes and 5 metres for 29 minutes using pure oxygen. Your ascent rate is 10 mpm. Your working SAC rate is 18 lpm and your deco SAC rate is 16 lpm. Using the tables in the appendix of this and the Tec Deep Diver Manual: How much volume of each gas do you need, including a 1/3rd reserve? What is your oxygen exposure for the dive? Assuming you’re wearing high pressure double 12 litre cylinders filled to 270 bar, what is your turn pressure using the Back Gas Turn Pressure formula? Dpth Tme SAC CnFct Vol. Gas PO2 OTU/mins OTUs CNS/min CNS% 57 30 18 6.7 3618 TMx21/35 1.41 1.64 49.2 .83 24.9 48.5a 2 18 6.0 216 TMx21/35 1.28 1.45 2.9 .55 1.1 40 1 16 5.2 83.2 TMx21/35 1.09 1.15 1.15 .42 .42 35a 1 18 4.6 82.8 TMx21/35 .97 .94 .94 .33 .33 30 1 16 4.0 64 TMx21/35 .84 .73 .73 .28 .28 27 1 16 3.7 59.2 TMx21/35 .78 .61 .61 .22 .22 24 1(+1) 16 3.4 108.8 TMx21/35 .71 .49 .98 .22 .44 21 1 16 3.1 49.6 EANx50 1.55 1.85 1.85 2.22 2.22 18 2 16 2.8 89.6 EANx50 1.4 1.63 3.26 .67 1.34 15 4 (+1) 16 2.5 200 EANx50 1.25 1.4 7 .55 2.75 12 6 16 2.2 211.2 EANx50 1.1 1.16 6.96 .42 2.52 9 8 16 1.9 243.2 EANx50 .95 .92 7.36 .33 2.64 6 5 (+1) 16 1.6 153.6 oxygen 1.6 1.92 11.52 2.22 13.32 5 29 16 1.5 696 oxygen 1.5 1.78 51.62 .83 24.07padi.com A-11
    • Appendix Tec Trimix Instructor Guide TMx21/35: 6345 litres required (4232 + 2116 reserve) EANx50 : 1190 litres required (793 + 397 reserve) Oxygen: 1274 litres required (849 + 425 reserve) OTUs: 146.08 (Note: Minor differences due to CNS: 76.55% rounding are acceptable.) Turn Pressure = 120 bar (119.25)14. IMPERIAL You’re planning a dive to 185 feet for 30 minutes using TMx21/35. Using deco software and inserting deep stops, you plan to decom- press at 130 feet, 100 feet, 90 feet and 80 feet for 1 minute each using bottom mix, 70 feet for 1 minute, 60 feet for 2 minutes, 50 feet for 4 minutes, 40 feet for 6 minutes and 30 feet for 8 minutes using EANx50, and 20 feet for 5 min- utes and 15 feet for 29 minutes using pure oxygen.Your ascent rate is 30 fpm. Your working SAC rate is .75 cfm and your deco SAC rate is .55 cfm. Using the tables in the appendix of this and the Tec Deep Diver Manual: How much vol- ume of each gas do you need, including a 1/3rd reserve? What is your oxygen exposure for the dive? Assuming you’re wearing double 120 cf cylinders, working pressure 2400 psi filled to 2700 psi, what is your turn pressure using the Back Gas Turn Pressure formula? Dpth Tme SAC CnFct Vol. Gas PO2 OTU/mins OTUs CNS/min CNS% 185 30 .75 6.8 153 TMx21/35 1.42 1.66 49.8 .83 24.9158(a) 2 .75 5.8 8.7 TMx21/35 1.23 1.37 2.74 .55 1.1 130 1 .55 4.9 2.7 TMx21/35 1.04 1.06 1.06 .42 .42115 (a) 1 .75 4.6 3.5 TMx21/35 .97 .96 .96 .33 .33 100 1 .55 4.0 2.2 TMx21/35 .85 .74 .74 .28 .28 90 1 .55 3.7 2.0 TMx21/35 .78 .62 .62 .22 .22 80 1(+1) .55 3.4 3.7 TMx21/35 .72 .5 1.0 .22 .44 70 1 .55 3.1 1.7 EANx50 1.56 1.87 1.87 2.22 2.22 60 2 .55 2.8 3.1 EANx50 1.41 1.64 3.28 .83 1.66 50 4 (+1) .55 2.5 6.9 EANx50 1.26 1.41 7.05 .55 2.75 40 6 .55 2.2 7.3 EANx50 1.11 1.17 7.02 .48 2.88 30 8 .55 1.9 8.4 EANx50 .95 .92 7.36 .33 2.64 20 5 (+1) .55 1.6 5.3 oxygen 1.61 1.93 11.58 2.22 13.32 15 29 .55 1.5 23.9 oxygen 1.45 1.71 49.59 .83 24.07 TMx21/35: 264 cf needed (176 + 88) EANx50: 41 cf needed (27 + 14) Oxygen: 44 cf needed (29 + 15) OTUs: 144.67 (Note: Minor differences due to CNS: 77.23% rounding are acceptable.) Turn Pressure = 1170 psi A-12 padi.com
    • Tec Trimix Instructor Guide Appendix15. List four benefits of team diving and how each relates to trimix diving. 1. Higher likelihood of mission success 2. Preparedness and resources for handling emergencies 3. Provides “backup brain” 4. Camaraderie from facing a challgenge16. Explain how trimix makes it even more important and beneficial for team members to use compatible gases. Compatible gases make it easier to handle emergencies, plus helps keep the team together. Makes “back up brain” better because everyone switches together and dives the same schedule.17. List what a Good Divers Main Objective Is To Live stands for, and one aspect of each step that relates to planning a trimix dive. [Answers may vary. See text for summary.]Knowledge Review –Chapter TWOPlease complete this review, and remove it from the manual to hand in to your instructor. Ifthere’s something you don’t understand, review the related material. If you still don’tunderstand, be sure to have your instructor explain it to you. 1. What is the primary advantage of using a fullface mask for trimix diving? What two primary considerations do you have in using a fullface mask for trimix diving? The primary advantage is that it reduces your risk of drowning if you have a CNS convulsion. The two primary considerations are gas switches and gas sharing while wearing the mask. 2. How do you plan dives with a multigas trimix computer? How do you back one up? You plan multigas trimix computer dives with desktop deco software. You back up the computer with either a second multigas trimix com- puter, or with generated tables, a depth gauge and timer.padi.com A-13
    • Appendix Tec Trimix Instructor Guide3. What are the two primary advantages and four disadvantages of helium as a dive gas? Advantages 1. Doesn’t cause narcosis 2. Less breathing effort due to lower density Disadvantages 1. Longer dives than comparable air/EANx dives 2. Less forgiving of decompression errors 3. Isobaric counterdiffusion is a theoretical concern 4. Generally inappropriate as a dry suit gas4. How can putting trimix in your dry suit cause decompression problems? Trimix in your dry suit can cause DCS by isobaric counterdiffusion of helium through your skin when you’re breathing a denser gas.5. What is an END? Using the appropriate tables in the appendix, what is the END for 73 metres/240 feet if you’re diving with TMx18/33? END is Equivalent Narcotic Depth. For a given depth and trimix, it is the depth you would expect the same narcosis with air. Using the END table, the END for 73 metres is 47 metres; for 240 feet it is 150 feet.6. What are four considerations in choosing a trimix? What would the “ideal” trimix be for 73 metres/240 feet be? 1. Narcosis 2. Oxygen exposure 3. Decompression issues 4. Logistics Using the tables, the ideal trimix for 73 metres is TMx 16/41. For 240 feet it is TMX 16/41.7. What is a hypoxic trimix? What is a travel gas? When do you need a travel gas? A hypoxic trimix is trimix with less than 21% oxygen. A travel gas is a gas you breathe to get to the minimum useable depth for a hypox- ic trimix . You need it with a trimxi with less than 16% oxygen, or less than 18% if at altitude or expecting exertion at the surface.8. What is a deep stop? What are three ways to determine deep stops using desktop deco software, and two ways using a multigas trimix computer? A-14 padi.com
    • Tec Trimix Instructor Guide Appendix A deep stop is a stop for 1 to 5 minutes between the bottom and the first stop predicted by a neo Haldanean model. Desktop deco software 1. Automatic generation by software 2. Use a bubble dynamics model 3. Calculate stops manually and enter as waypoints Multigas trimix computer 1. Calculate in your head during ascent 2. Use the Deep Stop Calculation Table slate 9. As a general rule, which gas should you use at your first deep stop? Why. As a general rule, you should use your back (bottom) gas at the first deep stop to give yourself an oxygen exposure reduction after the high PO2 at depth.10. What’s an air break? How often should you do them? An air break is a break to low oxygen gas to reduce the risk of CNS toxicity. You should do them at least every 20 to 25 minutes for five minutes, though every 10 to 12 minutes for 2 to 5 minutes has some theoretical advantages.11. What’s the theoretical benefit of having a small amount of helium in your deco gas? A small amount of helium in the deco gas may slow helium off gas slightly to reduce potential bubble formation.12. What’s the optimum way to ascend when trimix diving? Ascend slowly and gradually, with a momentary pause or stop at each 3 metres/10 feet until reaching your deco stops. Don’t skip deco stops even if your schedule lets you . If it does, stop for one minute at each 3 metres/10 foot interval. between the required stops.13. Where do you wear travel gas when using it? What’s the procedure for begin- ning a dive on travel gas? You normally wear travel gas on the left. It is on top if wearing more than one cylinder on that side. Travel gas breathing starts at the surface. Teammates confirm that all are breathing travel gas, then descend together. At the planned determined depth, the team NO TOX switches together to back gas. This may be done with the descent check or when staging deco cylinders.padi.com A-15
    • Appendix Tec Trimix Instructor Guide14. What are your options if you lose your decompression gases on a trimix dive? Your options are to get support divers to bring some down to you, if available. If your teammates have theirs, you may be able to decompress with theirs after they’re done. Otherwise decompress as long and as best you can with your back gas; however, you’re at high risk of DCS.15. How do you handle a failure with your multigas trimix computer if you’re using a backup depth gauge, timer and tables, and the failure occurs in the middle of your decompression? Find the schedule for your bottom depth and time and then the time for your present stop. Complete the time for that stop as shown on the table and follow the table’s schedule for the rest of the decom- pression.16. Why are support divers especially beneficial on a trimix dive? What are the characteristics of an effective support diver? The added complexity of a trimix dive makes support divers espe- cially beneficial. An effective support diver is qualified for the sup- port dive and depths, is a good communicator, is a good problem solver and has patience.17. What four responsibilities do you have in the dive community due to your role and position as a Tec Trimix Diver? 1. Be a role model 2. Show humility 3. Bring up less experienced divers 4. Stay current A-16 padi.com
    • Tec Trimix Instructor Guide AppendixKnowledge Review –Chapter THREEPlease complete this review, and remove it from the manual to hand in to your instructor. Ifthere’s something you don’t understand, review the related material. If you still don’tunderstand, be sure to have your instructor explain it to you. 1. You make a dive to 55 metres/180 feet for 20 minutes on TMx18/50. Not counting deep stops, your deco schedule is 21 metres/70 feet for 1 minute, 18 metres/60 feet for 2, 15 metres/50 feet for 2, 12 metres/40 feet for 4, and 9 metres/30 feet for 7 using TMx50/10. Your final stop is 6 metres/20 feet for 24 minutes on oxygen. At the 18 metre/60 foot stop, your dry suit valve sticks momentarily, causing you to rise to nearly 6 metres/20 feet as you disconnect it, regain control and redescend to 18 metres/60 feet in less than 2 minutes. What should you do? Complete the 18 metre/60 foot stop and all stops up to and includ- ing the 12 metre/40 foot stop as scheduled.. Extend the 9 metre/30 foot stop to 10.5 minutes and the 6 metre/20 foot stop to 36 min- utes. Stay at 6 metres/20 feet as long as reasonably possible past 36 minutes. 2. What should you do if you experience DCS symptoms underwater? Signal your teammates that you think you’re bent. If recompression is not immediately available, complete decompression. Extend 6 metre/20 foot stop (ideally on oxygen) while your teammates com- plete decompression, surface and prepare for transportation to medical care. Stay on oxygen after surfacing and let your team- mates deal with your gear, etc. Continue first aid for DCS until reaching medical care. 3. What should you do if you experience CNS oxygen toxicity symptoms during a trimix dive? Immediately switch to low oxygen gas. Ascend if possible. Stay off high oxygen gas until at least 15 minutes past the last symptoms. If possible without affecting unreasonably affecting decompression, stay on lower oxygen gas and limit oxygen exposure. Abort the dive if possible. 4. Describe the level of streamlining and technique skill expected of a Tec Trimix Diver.padi.com A-17
    • Appendix Tec Trimix Instructor Guide Everything should be tucked, stowed and tight with nothing dangling or protruding. Your buoyancy control should be precise, and you should swim without stirring up silt, staying off the bottom. 5. Why does shallow breathing lead to rapid breathing and high gas consump- tion? What are two ways that carbon dioxide buildup can affect you on a trim- ix dive? Shallow breathing is less efficient, so carbon dioxide builds up lead- ing to rapid breathing. This consumes gas fast because of the depth. High carbon dioxide can cause high gas consumption, and it can cause narcosis to increase. 6. What are four differences of diving with trimix versus diving without it with respect to mission planning? The four differences of diving with trimix than can affect a mission are decompression duration, depth, narcosis reduction and that trimix is easier to breathe. 7. What is the primary mission of any dive? The primary mission of any dive is for the team to return from the dive unhurt.Knowledge Review –Chapter FOURPlease complete this review, and remove it from the manual to hand in to your instructor. Ifthere’s something you don’t understand, review the related material. If you still don’tunderstand, be sure to have your instructor explain it to you. 1. What are the limits of trimix diving? Why? There are no limits because technical diving is still being explored. 2. What are the limits of your training in the Tec Trimix Diver course? To 75 metres/245 feet or the deepest depth reached in the course, whichever is less, in conditions comparable to those in which I trained. A-18 padi.com
    • Tec Trimix Instructor Guide Appendix 3. How do you extend your limits as a Tec Trimix Diver? Gradually, with dives progressively deeper. Master new conditions shallow before going deeper. Team up with more experienced divers. 4. What are your responsibilities as a Tec Trimix Diver with respect to the state of the art in trimix diving in particular, and technical diving in general? It’s my responsibility to stay informed about the state of the art in tec diving. It’s my responsibility to stop tec diving if the risk becomes intolerable or my physical condition makes the risk unacceptable. It’s my responsibility to keep my skills and knowledge fresh, and to brush up after inactivity before resuming. 5. What’s the most important personal quality you can have with respect to extending your limits? Patience. 6. What is “crush depth”? What makes it an issue for trimix diving? Crush depth is the depth at which equipment can fail due to the pressure. It’s an issue in trimix diving because some equipment was designed for recreational diving, which is much shallower. 7. What’s the safest course with respect to avoiding crush depth? Stay within the manufacturer’s rated depth for the equipment. 8. What risks do you face by exceeding equipment’s depth rating? Catastrophic failure, seal failure and cracks, and non catastrophic crush. 9. What other depth-related issues might you encounter as a trimix diver? Gauge and computer limits, BCD/dry suit inflation, wet suit com- pression, regulator performance, and the reliability of decompres- sion models.10. What should you look for with respect to equipment rated to deep depths? Check the manufacturer depth rating. Look for liquid filled mechani- cal gauges. Trimix dive computers generally are rated to trimix depths. Look for bulkheads in large items like light cansisters and DPVs.padi.com A-19
    • Tec Trimix Diver Exam ANSWER SHEET TEC TRIMIX DIVER EXAM □ VERSION A □ VERSION B A B C D A B C D A B C D 1. □ □ □ □ 20. □ □ □ □ 36. □ □ □ □ 2. □ □ □ □ 21. □ □ □ □ 37. □ □ □ □ 3. □ □ □ □ 22. □ □ □ □ 38. □ □ □ □ 4. □ □ □ □ 23. □ □ □ □ 39. □ □ □ □ 5. □ □ □ □ 24. □ □ □ □ 40. □ □ □ □ 6. □ □ □ □ 25. □ □ □ □ 41. □ □ □ □ 7. □ □ □ □ 26. □ □ □ □ 42. □ □ □ □ 8. □ □ □ □ 27. □ □ □ □ 43. □ □ □ □ 9. □ □ □ □ 28. □ □ □ □ 44. □ □ □ □ 10. □ □ □ □ 29. ____________________ 45. ____________________ 11. □ □ □ □ _________________________ _________________________ 12. □ □ □ □ 30. □ □ □ □ _________________________ 13. □ □ □ □ 31. ____________________ _________________________ 14. □ □ □ □ _________________________ _________________________ 15. □ □ □ □ 32. □ □ □ □ 46. □ □ □ □ 16. □ □ □ □ 33. □ □ □ □ 47. □ □ □ □ 17. □ □ □ □ 34. □ □ □ □ 48. □ □ □ □ 18. □ □ □ □ 35. ____________________ 49. □ □ □ □ 19. □ □ □ □ _________________________ 50. □ □ □ □Name ________________________________________________________________________________ (Please Print)Class No. _____________ Date________________________ Total Correct ____________________STUDEENT DIVER STATEMENT:I have reviewed the questions I answered incorrectly or incompletely, and I now understand what I missed._______________________________________________ Date_________________________________ Student SignatureProduct No. 10257 Version 1.0 (06/03) © International PADI, Inc. 2003 A-20
    • Tec Trimix Diver Exam A ANSWER KEY TEC TRIMIX DIVER EXAM VERSION A □ VERSION B A B C D A B C D A B C D 1. □ □ □ 20. □ □ □ 36. □ □ □ 2. □ □ □ 21. □ □ □ 37. □ □ □ 3. □ □ □ 22. □ □ □ 38. □ □ □ 4. □ □ □ 23. □ □ □ 39. □ □ □ 5. □ □ □ 24. □ □ □ 40. □ □ □ 6. □ □ □ 25. □ □ □ 41. □ □ □ 7. □ □ □ 26. □ □ □ 42. □ □ □ 8. □ □ □ 27. □ □ □ 43. □ □ □ 9. □ □ □ 28. □ □ □ 44. □ □ □ 10. □ □ □ 29. (Metric) 31 meters 45. EANx50: 2 @ 18m/60ft, 11. □ □ □ (Imperial) 103 feet 2 @ 15m/50ft, 4 @ 12. □ □ □ 30. □ □ □ 12m/40 ft, 9 @ 10m/30 ft 13. □ □ □ 31. (Metric) TMx20/29 Oxygen: 6 @ 6m/20ft, 14. □ □ □ (Imperial) TMx19/30 30 @ 5m/15ft 15. □ □ □ 32. □ □ □ 46. □ □ □ 16. □ □ □ 33. □ □ □ 47. □ □ □ 17. □ □ □ 34. □ □ □ 48. □ □ □ 18. □ □ □ 35. (Metric) 42 m and 36 m 49. □ □ □ 19. □ □ □ (Imperial) 140 ft and 120 ft 50. □ □ □Name ________________________________________________________________________________ (Please Print)Class No. _____________ Date________________________ Total Correct ____________________STUDENT DIVER STATEMENT:I have reviewed the questions I answered incorrectly or incompletely, and I now understand what I missed._______________________________________________ Date_________________________________ Student SignatureProduct No. 10260 Version 1.0 (06/03) © International PADI, Inc. 2003 A-21
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    • Tec Trimix Instructor Guide Tec Trimix Diver Exam B ANSWER KEY Appendix TEC TRIMIX DIVER EXAM □ VERSION A VERSION B A B C D A B C D A B C D 1. □ □ □ 20. □ □ □ 36. □ □ □ 2. □ □ □ 21. □ □ □ 37. □ □ □ 3. □ □ □ 22. □ □ □ 38. □ □ □ 4. □ □ □ 23. □ □ □ 39. □ □ □ 5. □ □ □ 24. □ □ □ 40. □ □ □ 6. □ □ □ 25. □ □ □ 41. □ □ □ 7. □ □ □ 26. □ □ □ 42. □ □ □ 8. □ □ □ 27. □ □ □ 43. □ □ □ 9. □ □ □ 28. □ □ □ 44. □ □ □ 10. □ □ □ 29. (Metric) 24 meters 45. Oxygen: 4.5 @ 6m/20ft, 11. □ □ □ (Imperial) 79 feet 25.5 @ 5m/15ft 12. □ □ □ 30. □ □ □ (rounding up to whole 13. □ □ □ 31. (Metric) TMx17/39 minute is acceptable) 14. □ □ □ (Imperial) TMx17/41 15. □ □ □ 32. □ □ □ 46. □ □ □ 16. □ □ □ 33. □ □ □ 47. □ □ □ 17. □ □ □ 34. □ □ □ 48. □ □ □ 18. □ □ □ 35. (Metric) 42 m and 39 m 49. □ □ □ 19. □ □ □ (Imperial) 140 ft and 130 ft 50. □ □ □Name ________________________________________________________________________________ (Please Print)Class No. _____________ Date________________________ Total Correct ____________________STUDENT DIVER STATEMENT:I have reviewed the questions I answered incorrectly or incompletely, and I now understand what I missed._______________________________________________ Date_________________________________ Student Signature padi.com A-23Product No. 10261 Version 1.0 (06/03) © International PADI, Inc. 2003 A-23
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    • Tec Trimix Instructor Guide Appendix TRIMIX OXYGEN MANAGEMENT TABLE – METRICOXYGEN CONTENT 10% OXYGEN CONTENT 11% OXYGEN CONTENT 12%DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 3 0.13 –– 0.00% 3 0.14 –– 0.00% 3 0.156 –– 0.00% 5 0.15 –– 0.00% 5 0.17 –– 0.00% 5 0.18 –– 0.00% 6 0.16 –– 0.00% 6 0.18 –– 0.00% 6 0.19 –– 0.00% 9 0.19 –– 0.00% 9 0.21 –– 0.00% 9 0.23 –– 0.00% 12 0.22 –– 0.00% 12 0.24 –– 0.00% 12 0.26 –– 0.00% 15 0.25 –– 0.00% 15 0.28 –– 0.00% 15 0.30 –– 0.00% 18 0.28 –– 0.00% 18 0.31 –– 0.00% 18 0.34 –– 0.00% 21 0.31 –– 0.00% 21 0.34 –– 0.00% 21 0.37 –– 0.00% 24 0.34 –– 0.00% 24 0.37 –– 0.00% 24 0.41 –– 0.00% 27 0.37 –– 0.00% 27 0.41 –– 0.00% 27 0.44 –– 0.00% 30 0.40 –– 0.00% 30 0.44 –– 0.00% 30 0.48 –– 0.00% 33 0.43 –– 0.00% 33 0.47 –– 0.00% 33 0.52 0.06 0.14% 36 0.46 –– 0.00% 36 0.51 0.03 0.14% 36 0.55 0.15 0.14% 39 0.49 –– 0.00% 39 0.54 0.12 0.14% 39 0.59 0.24 0.14% 42 0.52 0.07 0.14% 42 0.57 0.20 0.14% 42 0.62 0.31 0.17% 45 0.55 0.15 0.14% 45 0.61 0.27 0.17% 45 0.66 0.39 0.17% 48 0.58 0.22 0.14% 48 0.64 0.34 0.17% 48 0.70 0.46 0.17% 51 0.61 0.28 0.17% 51 0.67 0.41 0.17% 51 0.73 0.53 0.22% 54 0.64 0.35 0.17% 54 0.70 0.48 0.17% 54 0.77 0.60 0.22% 57 0.67 0.41 0.17% 57 0.74 0.54 0.22% 57 0.80 0.66 0.22% 60 0.70 0.47 0.17% 60 0.77 0.60 0.22% 60 0.84 0.73 0.28% 63 0.73 0.52 0.22% 63 0.80 0.66 0.22% 63 0.88 0.79 0.28% 66 0.76 0.58 0.22% 66 0.84 0.72 0.28% 66 0.91 0.85 0.33% 69 0.79 0.64 0.22% 69 0.87 0.78 0.28% 69 0.95 0.91 0.33% 72 0.82 0.69 0.28% 72 0.90 0.83 0.28% 72 0.98 0.97 0.33% 75 0.85 0.74 0.28% 75 0.94 0.89 0.33% 75 1.02 1.03 0.42%padi.com A-25
    • Appendix Tec Trimix Instructor GuideOXYGEN CONTENT 13% OXYGEN CONTEN 14% OXYGEN CONTENT 15%DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 3 0.169 –– 0.00% 3 0.182 –– 0.00% 3 0.195 –– 0.00% 5 0.20 –– 0.00% 5 0.21 –– 0.00% 5 0.23 –– 0.00% 6 0.21 –– 0.00% 6 0.22 –– 0.00% 6 0.24 –– 0.00% 9 0.25 –– 0.00% 9 0.27 –– 0.00% 9 0.29 –– 0.00% 12 0.29 –– 0.00% 12 0.31 –– 0.00% 12 0.33 –– 0.00% 15 0.33 –– 0.00% 15 0.35 –– 0.00% 15 0.38 –– 0.00% 18 0.36 –– 0.00% 18 0.39 –– 0.00% 18 0.42 –– 0.00% 21 0.40 –– 0.00% 21 0.43 –– 0.00% 21 0.47 –– 0.00% 24 0.44 –– 0.00% 24 0.48 –– 0.00% 24 0.51 0.04 0.14% 27 0.48 –– 0.00% 27 0.52 0.06 0.14% 27 0.56 0.16 0.14% 30 0.52 0.07 0.14% 30 0.56 0.17 0.14% 30 0.60 0.26 0.14% 33 0.56 0.17 0.14% 33 0.60 0.27 0.14% 33 0.65 0.36 0.17% 36 0.60 0.26 0.14% 36 0.64 0.36 0.17% 36 0.69 0.45 0.17% 39 0.64 0.34 0.17% 39 0.69 0.44 0.17% 39 0.74 0.53 0.22% 42 0.68 0.42 0.17% 42 0.73 0.52 0.22% 42 0.78 0.62 0.22% 45 0.72 0.50 0.22% 45 0.77 0.60 0.22% 45 0.83 0.70 0.28% 48 0.75 0.57 0.22% 48 0.81 0.68 0.28% 48 0.87 0.78 0.28% 51 0.79 0.64 0.22% 51 0.85 0.75 0.28% 51 0.92 0.86 0.33% 54 0.83 0.71 0.28% 54 0.90 0.82 0.28% 54 0.96 0.93 0.33% 57 0.87 0.78 0.28% 57 0.94 0.90 0.33% 57 1.01 1.01 0.42% 60 0.91 0.85 0.33% 60 0.98 0.97 0.33% 60 1.05 1.08 0.42% 63 0.95 0.91 0.33% 63 1.02 1.04 0.42% 63 1.10 1.16 0.42% 66 0.99 0.98 0.33% 66 1.06 1.11 0.42% 66 1.14 1.23 0.48% 69 1.03 1.04 0.42% 69 1.11 1.17 0.48% 69 1.19 1.30 0.48% 72 1.07 1.11 0.42% 72 1.15 1.24 0.48% 72 1.23 1.37 0.55% 75 1.11 1.17 0.48% 75 1.19 1.31 0.48% 75 1.28 1.44 0.55% A-26 padi.com
    • Tec Trimix Instructor Guide AppendixOXYGEN CONTENT 16% OXYGEN CONTENT 17% OXYGEN CONTENT 18%DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 3 0.208 –– 0.00% 3 0.221 –– 0.00% 3 0.234 –– 0.00% 5 0.24 –– 0.00% 5 0.26 –– 0.00% 5 0.27 –– 0.00% 6 0.26 –– 0.00% 6 0.27 –– 0.00% 6 0.29 –– 0.00% 9 0.30 –– 0.00% 9 0.32 –– 0.00% 9 0.34 –– 0.00% 12 0.35 –– 0.00% 12 0.37 –– 0.00% 12 0.40 –– 0.00% 15 0.40 –– 0.00% 15 0.43 –– 0.00% 15 0.45 –– 0.00% 18 0.45 –– 0.00% 18 0.48 –– 0.00% 18 0.50 0.02 0.00% 21 0.50 –– 0.00% 21 0.53 0.09 0.14% 21 0.56 0.17 0.14% 24 0.54 0.13 0.14% 24 0.58 0.21 0.14% 24 0.61 0.29 0.17% 27 0.59 0.25 0.14% 27 0.63 0.32 0.17% 27 0.67 0.40 0.17% 30 0.64 0.35 0.17% 30 0.68 0.43 0.17% 30 0.72 0.51 0.22% 33 0.69 0.44 0.17% 33 0.73 0.53 0.22% 33 0.77 0.61 0.22% 36 0.74 0.54 0.22% 36 0.78 0.62 0.22% 36 0.83 0.70 0.28% 39 0.78 0.63 0.22% 39 0.83 0.71 0.28% 39 0.88 0.80 0.28% 42 0.83 0.71 0.28% 42 0.88 0.80 0.28% 42 0.94 0.89 0.33% 45 0.88 0.80 0.28% 45 0.94 0.89 0.33% 45 0.99 0.98 0.33% 48 0.93 0.88 0.33% 48 0.99 0.98 0.33% 48 1.04 1.07 0.42% 51 0.98 0.96 0.33% 51 1.04 1.06 0.42% 51 1.10 1.16 0.42% 54 1.02 1.04 0.42% 54 1.09 1.14 0.42% 54 1.15 1.25 0.48% 57 1.07 1.12 0.42% 57 1.14 1.23 0.48% 57 1.21 1.33 0.55% 60 1.12 1.20 0.48% 60 1.19 1.31 0.48% 60 1.26 1.42 0.55% 63 1.17 1.27 0.48% 63 1.24 1.39 0.55% 63 1.31 1.50 0.67% 66 1.22 1.35 0.55% 66 1.29 1.46 0.55% 66 1.37 1.58 0.67% 69 1.26 1.42 0.55% 69 1.34 1.54 0.67% 69 1.42 1.66 0.83% 72 1.31 1.50 0.67% 72 1.39 1.62 0.67% 72 1.48 1.74 0.83% 75 1.36 1.57 0.67% 75 1.45 1.70 0.83% 75 1.53 1.82 2.22%padi.com A-27
    • Appendix Tec Trimix Instructor GuideOXYGEN CONTENT 19% OXYGEN CONTENT 20% OXYGEN CONTENT 21%DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 3 0.247 –– 0.00% 3 0.26 –– 0.00% 3 0.27 –– 0.00% 5 0.29 –– 0.00% 5 0.30 –– 0.00% 5 0.32 –– 0.00% 6 0.30 –– 0.00% 6 0.32 –– 0.00% 6 0.34 –– 0.00% 9 0.36 –– 0.00% 9 0.38 –– 0.00% 9 0.40 –– 0.00% 12 0.42 –– 0.00% 12 0.44 –– 0.00% 12 0.46 –– 0.00% 15 0.48 –– 0.00% 15 0.50 0.00 0.00% 15 0.53 0.08 0.14% 18 0.53 0.10 0.14% 18 0.56 0.17 0.14% 18 0.59 0.24 0.14% 21 0.59 0.24 0.14% 21 0.62 0.31 0.17% 21 0.65 0.37 0.17% 24 0.65 0.36 0.17% 24 0.68 0.43 0.17% 24 0.71 0.49 0.22% 27 0.70 0.47 0.17% 27 0.74 0.54 0.22% 27 0.78 0.61 0.22% 30 0.76 0.58 0.22% 30 0.80 0.65 0.22% 30 0.84 0.73 0.28% 33 0.82 0.69 0.28% 33 0.86 0.76 0.28% 33 0.90 0.84 0.28% 36 0.87 0.79 0.28% 36 0.92 0.87 0.33% 36 0.97 0.94 0.33% 39 0.93 0.88 0.33% 39 0.98 0.97 0.33% 39 1.03 1.05 0.42% 42 0.99 0.98 0.33% 42 1.04 1.07 0.42% 42 1.09 1.15 0.42% 45 1.05 1.07 0.42% 45 1.10 1.16 0.42% 45 1.16 1.25 0.48% 48 1.10 1.17 0.42% 48 1.16 1.26 0.48% 48 1.22 1.35 0.55% 51 1.16 1.26 0.48% 51 1.22 1.35 0.55% 51 1.28 1.45 0.55% 54 1.22 1.35 0.55% 54 1.28 1.45 0.55% 54 1.34 1.54 0.67% 57 1.27 1.44 0.55% 57 1.34 1.54 0.67% 57 1.41 1.64 0.83% 60 1.33 1.52 0.67% 60 1.40 1.63 0.83% 60 1.47 1.73 0.83% 63 1.39 1.61 0.67% 63 1.46 1.72 0.83% 63 1.53 1.83 2.22% 66 1.44 1.69 0.83% 66 1.52 1.81 2.22% 66 1.60 1.92 2.22% 69 1.50 1.78 0.83% 69 1.58 1.89 2.22% 72 1.56 1.86 2.22% A-28 padi.com
    • Tec Trimix Instructor Guide AppendixOXYGEN CONTENT 22% OXYGEN CONTENT 23% OXYGEN CONTENT 24%DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 3 0.29 –– 0.00% 3 0.30 –– 0.00% 3 0.31 –– 0.00% 5 0.33 –– 0.00% 5 0.35 –– 0.00% 5 0.36 –– 0.00% 6 0.35 –– 0.00% 6 0.37 –– 0.00% 6 0.38 –– 0.00% 9 0.42 –– 0.00% 9 0.44 –– 0.00% 9 0.46 –– 0.00% 12 0.48 –– 0.00% 12 0.51 0.03 0.14% 12 0.53 0.09 0.14% 15 0.55 0.15 0.14% 15 0.58 0.21 0.14% 15 0.60 0.26 0.14% 18 0.62 0.30 0.17% 18 0.64 0.36 0.17% 18 0.67 0.41 0.17% 21 0.68 0.43 0.17% 21 0.71 0.49 0.22% 21 0.74 0.55 0.22% 24 0.75 0.56 0.22% 24 0.78 0.62 0.22% 24 0.82 0.68 0.28% 27 0.81 0.68 0.28% 27 0.85 0.75 0.28% 27 0.89 0.81 0.28% 30 0.88 0.80 0.28% 30 0.92 0.87 0.33% 30 0.96 0.93 0.33% 33 0.95 0.91 0.33% 33 0.99 0.98 0.33% 33 1.03 1.05 0.42% 36 1.01 1.02 0.42% 36 1.06 1.10 0.42% 36 1.10 1.17 0.42% 39 1.08 1.13 0.42% 39 1.13 1.21 0.48% 39 1.18 1.28 0.48% 42 1.14 1.23 0.48% 42 1.20 1.32 0.48% 42 1.25 1.40 0.55% 45 1.21 1.34 0.55% 45 1.27 1.42 0.55% 45 1.32 1.51 0.67% 48 1.28 1.44 0.55% 48 1.33 1.53 0.67% 48 1.39 1.62 0.67% 51 1.34 1.54 0.67% 51 1.40 1.63 0.67% 51 1.46 1.72 0.83% 54 1.41 1.64 0.83% 54 1.47 1.74 0.83% 54 1.54 1.83 2.22% 57 1.47 1.74 0.83% 57 1.54 1.84 2.22% 60 1.54 1.84 2.22%padi.com A-29
    • Appendix Tec Trimix Instructor GuideOXYGEN CONTENT 25% OXYGEN CONTENT 27% OXYGEN CONTENT 29%DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 3 0.33 –– 0.00% 3 0.35 –– 0.00% 3 0.38 –– 0.00% 5 0.38 –– 0.00% 5 0.41 –– 0.00% 5 0.44 –– 0.00% 6 0.40 –– 0.00% 6 0.43 –– 0.00% 6 0.46 –– 0.00% 9 0.48 –– 0.00% 9 0.51 0.05 0.14% 9 0.55 0.15 0.14% 12 0.55 0.15 0.14% 12 0.59 0.25 0.14% 12 0.64 0.34 0.17% 15 0.63 0.32 0.17% 15 0.68 0.42 0.17% 15 0.73 0.52 0.22% 18 0.70 0.47 0.17% 18 0.76 0.57 0.22% 18 0.81 0.68 0.28% 21 0.78 0.61 0.22% 21 0.84 0.72 0.28% 21 0.90 0.83 0.28% 24 0.85 0.74 0.28% 24 0.92 0.86 0.33% 24 0.99 0.98 0.33% 27 0.93 0.87 0.33% 27 1.00 1.00 0.33% 27 1.07 1.12 0.42% 30 1.00 1.00 0.33% 30 1.08 1.13 0.42% 30 1.16 1.26 0.48% 33 1.08 1.12 0.42% 33 1.16 1.26 0.48% 33 1.25 1.40 0.55% 36 1.15 1.24 0.48% 36 1.24 1.39 0.55% 36 1.33 1.53 0.67% 39 1.23 1.36 0.55% 39 1.32 1.51 0.67% 39 1.42 1.66 0.83% 42 1.30 1.48 0.55% 42 1.40 1.63 0.67% 42 1.51 1.79 2.22% 45 1.38 1.59 0.67% 45 1.49 1.76 0.83% 45 1.60 1.92 2.22% 48 1.45 1.70 0.83% 48 1.57 1.87 2.22% 51 1.53 1.81 2.22%OXYGEN CONTENT 26% OXYGEN CONTENT 28% OXYGEN CONTENT 30%DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 3 0.34 –– 0.00% 3 0.36 –– 0.00% 3 0.39 –– 0.00% 5 0.39 –– 0.00% 5 0.42 –– 0.00% 5 0.45 –– 0.00% 6 0.42 –– 0.00% 6 0.45 –– 0.00% 6 0.48 –– 0.00% 9 0.49 –– 0.00% 9 0.53 0.10 0.14% 9 0.57 0.20 0.14% 12 0.57 0.20 0.14% 12 0.62 0.30 0.17% 12 0.66 0.39 0.17% 15 0.65 0.37 0.17% 15 0.70 0.47 0.17% 15 0.75 0.56 0.22% 18 0.73 0.52 0.22% 18 0.78 0.63 0.22% 18 0.84 0.73 0.28% 21 0.81 0.67 0.28% 21 0.87 0.78 0.28% 21 0.93 0.88 0.33% 24 0.88 0.80 0.28% 24 0.95 0.92 0.33% 24 1.02 1.03 0.42% 27 0.96 0.94 0.33% 27 1.04 1.06 0.42% 27 1.11 1.18 0.48% 30 1.04 1.07 0.42% 30 1.12 1.20 0.48% 30 1.20 1.32 0.48% 33 1.12 1.19 0.48% 33 1.20 1.33 0.48% 33 1.29 1.46 0.55% 36 1.20 1.32 0.48% 36 1.29 1.46 0.55% 36 1.38 1.60 0.67% 39 1.27 1.44 0.55% 39 1.37 1.59 0.67% 39 1.47 1.73 0.83% 42 1.35 1.56 0.67% 42 1.46 1.71 0.83% 42 1.56 1.87 2.22% 45 1.43 1.67 0.83% 45 1.54 1.84 2.22% 48 1.51 1.79 2.22% 51 1.59 1.90 2.22% A-30 padi.com
    • Tec Trimix Instructor Guide AppendixOXYGEN CONTENT 31% OXYGEN CONTENT 33% OXYGEN CONTENT 35%DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 3 0.40 –– 0.00% 3 0.43 –– 0.00% 3 0.46 –– 0.00% 5 0.47 –– 0.00% 5 0.50 –– 0.00% 5 0.53 0.08 0.14% 6 0.50 –– 0.00% 6 0.53 0.09 0.14% 6 0.56 0.17 0.14% 9 0.59 0.24 0.14% 9 0.63 0.32 0.17% 9 0.67 0.40 0.17% 12 0.68 0.43 0.17% 12 0.73 0.52 0.22% 12 0.77 0.60 0.22% 15 0.78 0.61 0.22% 15 0.83 0.70 0.28% 15 0.88 0.79 0.28% 18 0.87 0.78 0.28% 18 0.92 0.87 0.33% 18 0.98 0.97 0.33% 21 0.96 0.93 0.33% 21 1.02 1.04 0.42% 21 1.09 1.14 0.42% 24 1.05 1.09 0.42% 24 1.12 1.20 0.48% 24 1.19 1.31 0.48% 27 1.15 1.24 0.48% 27 1.22 1.36 0.55% 27 1.30 1.47 0.55% 30 1.24 1.38 0.55% 30 1.32 1.51 0.67% 30 1.40 1.63 0.67% 33 1.33 1.53 0.67% 33 1.42 1.66 0.83% 33 1.51 1.79 2.22% 36 1.43 1.67 0.83% 36 1.52 1.80 2.22% 39 1.52 1.81 2.22%OXYGEN CONTENT 32% OXYGEN CONTENT 34% OXYGEN CONTENT 36%DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 3 0.42 –– 0.00% 3 0.44 –– 0.00% 3 0.47 –– 0.00% 5 0.48 –– 0.00% 5 0.51 0.04 0.14% 5 0.54 0.12 0.14% 6 0.51 0.05 0.14% 6 0.54 0.13 0.14% 6 0.58 0.21 0.14% 9 0.61 0.28 0.17% 9 0.65 0.36 0.17% 9 0.68 0.44 0.17% 12 0.70 0.48 0.17% 12 0.75 0.56 0.22% 12 0.79 0.64 0.22% 15 0.80 0.65 0.22% 15 0.85 0.74 0.28% 15 0.90 0.83 0.28% 18 0.90 0.82 0.28% 18 0.95 0.92 0.33% 18 1.01 1.01 0.42% 21 0.99 0.99 0.33% 21 1.05 1.09 0.42% 21 1.12 1.19 0.48% 24 1.09 1.14 0.42% 24 1.16 1.25 0.48% 24 1.22 1.36 0.55% 27 1.18 1.30 0.48% 27 1.26 1.41 0.55% 27 1.33 1.53 0.67% 30 1.28 1.45 0.55% 30 1.36 1.57 0.67% 30 1.44 1.69 0.83% 33 1.38 1.59 0.67% 33 1.46 1.72 0.83% 33 1.55 1.85 2.22% 36 1.47 1.74 0.83% 36 1.56 1.87 2.22% 39 1.57 1.88 2.22%padi.com A-31
    • Appendix Tec Trimix Instructor GuideOXYGEN CONTENT 37% OXYGEN CONTENT 39% OXYGEN CONTENT 42%DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 3 0.48 –– 0.00% 3 0.51 0.03 0.14% 3 0.55 0.14 0.14% 5 0.56 0.16 0.14% 5 0.59 0.23 0.14% 5 0.63 0.33 0.17% 6 0.59 0.25 0.14% 6 0.62 0.31 0.17% 6 0.67 0.41 0.17% 9 0.70 0.47 0.17% 9 0.74 0.55 0.22% 9 0.80 0.65 0.22% 12 0.81 0.68 0.28% 12 0.86 0.76 0.28% 12 0.92 0.87 0.33% 15 0.93 0.87 0.33% 15 0.98 0.96 0.33% 15 1.05 1.08 0.42% 18 1.04 1.06 0.42% 18 1.09 1.15 0.42% 18 1.18 1.28 0.48% 21 1.15 1.24 0.48% 21 1.21 1.34 0.55% 21 1.30 1.48 0.55% 24 1.26 1.41 0.55% 24 1.33 1.52 0.67% 24 1.43 1.67 0.83% 27 1.37 1.58 0.67% 27 1.44 1.69 0.83% 27 1.55 1.86 2.22% 30 1.48 1.75 0.83% 30 1.56 1.87 2.22% 33 1.59 1.91 2.22% OXYGEN CONTENT 40% OXYGEN CONTENT 43%OXYGEN CONTENT 38% DEPTH 3 PO2 0.52 OTU/MIN CNS% 0.07 0.14% DEPTH 3 PO2 0.56 OTU/MIN CNS% 0.17 0.14%DEPTH PO2 OTU/MIN CNS% 5 0.65 0.36 0.17% 5 0.60 0.26 0.14% 3 0.49 –– 0.00% 6 0.69 0.44 0.17% 6 0.64 0.35 0.17% 5 0.57 0.20 0.14% 9 0.82 0.69 0.28% 9 0.76 0.58 0.22% 6 0.61 0.28 0.17% 12 0.95 0.91 0.33% 12 0.88 0.80 0.28% 9 0.72 0.51 0.22% 15 1.08 1.12 0.42% 15 1.00 1.00 0.33% 12 0.84 0.72 0.28% 18 1.20 1.33 0.48% 18 1.12 1.20 0.48% 15 0.95 0.92 0.33% 21 1.33 1.53 0.67% 21 1.24 1.38 0.55% 18 1.06 1.11 0.42% 24 1.46 1.72 0.83% 24 1.36 1.57 0.67% 21 1.18 1.29 0.48% 27 1.59 1.91 2.22% 27 1.48 1.75 0.83% 24 1.29 1.46 0.33% 30 1.60 1.92 2.22% 27 1.41 1.64 0.83% 30 1.52 1.81 2.22% OXYGEN CONTENT 41% OXYGEN CONTENT 44% DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 3 0.53 0.10 0.14% 3 0.57 0.20 0.14% 5 0.62 0.30 0.17% 5 0.66 0.39 0.17% 6 0.66 0.38 0.17% 6 0.70 0.48 0.17% 9 0.78 0.62 0.22% 9 0.84 0.72 0.28% 12 0.90 0.83 0.28% 12 0.97 0.95 0.33% 15 1.03 1.04 0.42% 15 1.10 1.16 0.42% 18 1.15 1.24 0.48% 18 1.23 1.37 0.55% 21 1.27 1.43 0.55% 21 1.36 1.57 0.67% 24 1.39 1.62 0.67% 24 1.50 1.77 0.83% 27 1.52 1.80 2.22% A-32 padi.com
    • Tec Trimix Instructor Guide AppendixOXYGEN CONTENT 45% OXYGEN CONTENT 48% OXYGEN CONTENT 50%DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 3 0.59 0.23 0.14% 3 0.62 0.31 0.17% 3 0.65 0.37 0.17% 5 0.68 0.42 0.17% 5 0.72 0.51 0.22% 5 0.75 0.56 0.22% 6 0.72 0.51 0.22% 6 0.77 0.60 0.22% 6 0.80 0.65 0.22% 9 0.86 0.75 0.28% 9 0.91 0.85 0.33% 9 0.95 0.92 0.33% 12 0.99 0.98 0.33% 12 1.06 1.09 0.42% 12 1.10 1.16 0.42% 15 1.13 1.20 0.48% 15 1.20 1.32 0.48% 15 1.25 1.40 0.55% 18 1.26 1.42 0.55% 18 1.34 1.54 0.67% 18 1.40 1.63 0.67% 21 1.40 1.62 0.67% 21 1.49 1.76 0.83% 21 1.55 1.85 2.22% 24 1.53 1.82 2.22%OXYGEN CONTENT 46% OXYGEN CONTENT 49%DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 3 0.60 0.26 0.14% 3 0.64 0.34 0.17% 5 0.69 0.45 0.17% 5 0.74 0.53 0.22% 6 0.74 0.54 0.22% 6 0.78 0.63 0.22% 9 0.87 0.79 0.28% 9 0.93 0.88 0.33% 12 1.01 1.02 0.42% 12 1.08 1.13 0.42% 15 1.15 1.24 0.48% 15 1.23 1.36 0.55% 18 1.29 1.46 0.55% 18 1.37 1.59 0.67% 21 1.43 1.67 0.83% 21 1.52 1.81 2.22% 24 1.56 1.87 2.22%OXYGEN CONTENT 47%DEPTH PO2 OTU/MIN CNS% 3 0.61 0.29 0.17% 5 0.71 0.48 0.22% 6 0.75 0.57 0.22% 9 0.89 0.82 0.28% 12 1.03 1.06 0.42% 15 1.18 1.28 0.48% 18 1.32 1.50 0.67% 21 1.46 1.71 0.83% 24 1.60 1.92 2.22%padi.com A-33
    • Appendix Tec Trimix Instructor Guide TRIMIX OXYGEN MANAGEMENT TABLE – IMPERIALOXYGEN CONTENT 10% OXYGEN CONTENT 11% OXYGEN CONTENT 12%DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 10 0.13 –– 0.00% 10 0.14 –– 0.00% 10 0.16 –– 0.00% 15 0.15 –– 0.00% 15 0.16 –– 0.00% 15 0.17 –– 0.00% 20 0.16 –– 0.00% 20 0.18 –– 0.00% 20 0.19 –– 0.00% 30 0.19 –– 0.00% 30 0.21 –– 0.00% 30 0.23 –– 0.00% 40 0.22 –– 0.00% 40 0.24 –– 0.00% 40 0.27 –– 0.00% 50 0.25 –– 0.00% 50 0.28 –– 0.00% 50 0.30 –– 0.00% 60 0.28 –– 0.00% 60 0.31 –– 0.00% 60 0.34 –– 0.00% 70 0.31 –– 0.00% 70 0.34 –– 0.00% 70 0.37 –– 0.00% 80 0.34 –– 0.00% 80 0.38 –– 0.00% 80 0.41 –– 0.00% 90 0.37 –– 0.00% 90 0.41 –– 0.00% 90 0.45 –– 0.00% 100 0.40 –– 0.00% 100 0.44 –– 0.00% 100 0.48 –– 0.00% 110 0.43 –– 0.00% 110 0.48 –– 0.00% 110 0.52 0.07 0.14% 120 0.46 –– 0.00% 120 0.51 0.04 0.14% 120 0.56 0.16 0.14% 130 0.49 –– 0.00% 130 0.54 0.13 0.14% 130 0.59 0.25 0.14% 140 0.52 0.08 0.14% 140 0.58 0.21 0.14% 140 0.63 0.33 0.17% 150 0.55 0.16 0.14% 150 0.61 0.28 0.17% 150 0.67 0.40 0.17% 160 0.58 0.23 0.14% 160 0.64 0.35 0.17% 160 0.70 0.47 0.17% 170 0.62 0.30 0.17% 170 0.68 0.42 0.17% 170 0.74 0.54 0.22% 180 0.65 0.36 0.17% 180 0.71 0.49 0.22% 180 0.77 0.61 0.22% 190 0.68 0.42 0.17% 190 0.74 0.55 0.22% 190 0.81 0.67 0.28% 200 0.71 0.48 0.22% 200 0.78 0.61 0.22% 200 0.85 0.74 0.28% 210 0.74 0.54 0.22% 210 0.81 0.67 0.28% 210 0.88 0.80 0.28% 220 0.77 0.59 0.22% 220 0.84 0.73 0.28% 220 0.92 0.87 0.33% 230 0.80 0.65 0.22% 230 0.88 0.79 0.28% 230 0.96 0.93 0.33% 240 0.83 0.70 0.28% 240 0.91 0.85 0.33% 240 0.99 0.99 0.33% 250 0.86 0.76 0.28% 250 0.94 0.90 0.33% 250 1.03 1.05 0.42% A-34 padi.com
    • Tec Trimix Instructor Guide AppendixOXYGEN CONTENT 13% OXYGEN CONTEN 14% OXYGEN CONTENT 15%DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 10 0.17 –– 0.00% 10 0.18 –– 0.00% 10 0.20 –– 0.00% 15 0.19 –– 0.00% 15 0.20 –– 0.00% 15 0.22 –– 0.00% 20 0.21 –– 0.00% 20 0.22 –– 0.00% 20 0.24 –– 0.00% 30 0.25 –– 0.00% 30 0.27 –– 0.00% 30 0.29 –– 0.00% 40 0.29 –– 0.00% 40 0.31 –– 0.00% 40 0.33 –– 0.00% 50 0.33 –– 0.00% 50 0.35 –– 0.00% 50 0.38 –– 0.00% 60 0.37 –– 0.00% 60 0.39 –– 0.00% 60 0.42 –– 0.00% 70 0.41 –– 0.00% 70 0.44 –– 0.00% 70 0.47 –– 0.00% 80 0.45 –– 0.00% 80 0.48 –– 0.00% 80 0.51 0.05 0.14% 90 0.48 –– 0.00% 90 0.52 0.07 0.14% 90 0.56 0.17 0.14% 100 0.52 0.08 0.14% 100 0.56 0.18 0.14% 100 0.60 0.27 0.14% 110 0.56 0.18 0.14% 110 0.61 0.28 0.17% 110 0.65 0.37 0.17% 120 0.60 0.27 0.14% 120 0.65 0.37 0.17% 120 0.70 0.46 0.17% 130 0.64 0.35 0.17% 130 0.69 0.45 0.17% 130 0.74 0.55 0.22% 140 0.68 0.43 0.17% 140 0.73 0.53 0.22% 140 0.79 0.63 0.22% 150 0.72 0.51 0.22% 150 0.78 0.61 0.22% 150 0.83 0.71 0.28% 160 0.76 0.58 0.22% 160 0.82 0.69 0.28% 160 0.88 0.79 0.28% 170 0.80 0.65 0.22% 170 0.86 0.76 0.28% 170 0.92 0.87 0.33% 180 0.84 0.72 0.28% 180 0.90 0.84 0.28% 180 0.97 0.95 0.33% 190 0.88 0.79 0.28% 190 0.95 0.91 0.33% 190 1.01 1.02 0.42% 200 0.92 0.86 0.33% 200 0.99 0.98 0.33% 200 1.06 1.10 0.42% 210 0.96 0.93 0.33% 210 1.03 1.05 0.42% 210 1.10 1.17 0.42% 220 1.00 0.99 0.33% 220 1.07 1.12 0.42% 220 1.15 1.24 0.48% 230 1.04 1.06 0.42% 230 1.12 1.19 0.48% 230 1.20 1.32 0.48% 240 1.08 1.12 0.42% 240 1.16 1.26 0.48% 240 1.24 1.39 0.55% 250 1.11 1.19 0.48% 250 1.20 1.32 0.48% 250 1.29 1.46 0.55%padi.com A-35
    • Appendix Tec Trimix Instructor GuideOXYGEN CONTENT 16% OXYGEN CONTENT 17% OXYGEN CONTENT 18%DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 10 0.21 –– 0.00% 10 0.22 –– 0.00% 10 0.23 –– 0.00% 15 0.23 –– 0.00% 15 0.25 –– 0.00% 15 0.26 –– 0.00% 20 0.26 –– 0.00% 20 0.27 –– 0.00% 20 0.29 –– 0.00% 30 0.31 –– 0.00% 30 0.32 –– 0.00% 30 0.34 –– 0.00% 40 0.35 –– 0.00% 40 0.38 –– 0.00% 40 0.40 –– 0.00% 50 0.40 –– 0.00% 50 0.43 –– 0.00% 50 0.45 –– 0.00% 60 0.45 –– 0.00% 60 0.48 –– 0.00% 60 0.51 0.03 0.14% 70 0.50 –– 0.00% 70 0.53 0.10 0.14% 70 0.56 0.18 0.14% 80 0.55 0.14 0.14% 80 0.58 0.22 0.14% 80 0.62 0.30 0.17% 90 0.60 0.25 0.14% 90 0.63 0.33 0.17% 90 0.67 0.41 0.17% 100 0.64 0.36 0.17% 100 0.69 0.44 0.17% 100 0.73 0.52 0.22% 110 0.69 0.45 0.17% 110 0.74 0.54 0.22% 110 0.78 0.62 0.22% 120 0.74 0.55 0.22% 120 0.79 0.63 0.22% 120 0.83 0.72 0.28% 130 0.79 0.64 0.22% 130 0.84 0.73 0.28% 130 0.89 0.81 0.28% 140 0.84 0.72 0.28% 140 0.89 0.82 0.28% 140 0.94 0.91 0.33% 150 0.89 0.81 0.28% 150 0.94 0.90 0.33% 150 1.00 1.00 0.33% 160 0.94 0.89 0.33% 160 0.99 0.99 0.33% 160 1.05 1.09 0.42% 170 0.98 0.97 0.33% 170 1.05 1.08 0.42% 170 1.11 1.18 0.48% 180 1.03 1.05 0.42% 180 1.10 1.16 0.42% 180 1.16 1.26 0.48% 190 1.08 1.13 0.42% 190 1.15 1.24 0.48% 190 1.22 1.35 0.55% 200 1.13 1.21 0.48% 200 1.20 1.32 0.48% 200 1.27 1.43 0.55% 210 1.18 1.29 0.48% 210 1.25 1.40 0.55% 210 1.33 1.52 0.67% 220 1.23 1.36 0.55% 220 1.30 1.48 0.55% 220 1.38 1.60 0.67% 230 1.28 1.44 0.55% 230 1.35 1.56 0.67% 230 1.43 1.68 0.83% 240 1.32 1.51 0.67% 240 1.41 1.64 0.83% 240 1.49 1.76 0.83% 250 1.37 1.59 0.67% 250 1.46 1.72 0.83% 250 1.54 1.84 2.22% A-36 padi.com
    • Tec Trimix Instructor Guide AppendixOXYGEN CONTENT 19% OXYGEN CONTENT 20% OXYGEN CONTENT 21%DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 10 0.25 –– 0.00% 10 0.26 –– 0.00% 10 0.27 –– 0.00% 15 0.28 –– 0.00% 15 0.29 –– 0.00% 15 0.31 –– 0.00% 20 0.31 –– 0.00% 20 0.32 –– 0.00% 20 0.34 –– 0.00% 30 0.36 –– 0.00% 30 0.38 –– 0.00% 30 0.40 –– 0.00% 40 0.42 –– 0.00% 40 0.44 –– 0.00% 40 0.46 –– 0.00% 50 0.48 –– 0.00% 50 0.50 0.01 0.00% 50 0.53 0.09 0.14% 60 0.54 0.11 0.14% 60 0.56 0.18 0.14% 60 0.59 0.24 0.14% 70 0.59 0.25 0.14% 70 0.62 0.31 0.17% 70 0.66 0.38 0.17% 80 0.65 0.37 0.17% 80 0.68 0.44 0.17% 80 0.72 0.50 0.22% 90 0.71 0.48 0.22% 90 0.75 0.55 0.22% 90 0.78 0.62 0.22% 100 0.77 0.59 0.22% 100 0.81 0.67 0.28% 100 0.85 0.74 0.28% 110 0.82 0.70 0.28% 110 0.87 0.77 0.28% 110 0.91 0.85 0.33% 120 0.88 0.80 0.28% 120 0.93 0.88 0.33% 120 0.97 0.96 0.33% 130 0.94 0.90 0.33% 130 0.99 0.98 0.33% 130 1.04 1.06 0.42% 140 1.00 0.99 0.33% 140 1.05 1.08 0.42% 140 1.10 1.16 0.42% 150 1.05 1.09 0.42% 150 1.11 1.18 0.48% 150 1.16 1.27 0.48% 160 1.11 1.18 0.48% 160 1.17 1.27 0.48% 160 1.23 1.37 0.55% 170 1.17 1.27 0.48% 170 1.23 1.37 0.55% 170 1.29 1.46 0.55% 180 1.23 1.36 0.55% 180 1.29 1.46 0.55% 180 1.36 1.56 0.67% 190 1.28 1.45 0.55% 190 1.35 1.56 0.67% 190 1.42 1.66 0.83% 200 1.34 1.54 0.67% 200 1.41 1.65 0.83% 200 1.48 1.75 0.83% 210 1.40 1.63 0.67% 210 1.47 1.74 0.83% 210 1.55 1.85 2.22% 220 1.46 1.71 0.83% 220 1.53 1.83 2.22% 220 1.61 1.94 2.22% 230 1.51 1.80 2.22% 230 1.59 1.92 2.22% 240 1.57 1.88 2.22%padi.com A-37
    • Appendix Tec Trimix Instructor GuideOXYGEN CONTENT 22% OXYGEN CONTENT 23% OXYGEN CONTENT 24%DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 10 0.29 –– 0.00% 10 0.30 –– 0.00% 10 0.31 –– 0.00% 15 0.32 –– 0.00% 15 0.33 –– 0.00% 15 0.35 –– 0.00% 20 0.35 –– 0.00% 20 0.37 –– 0.00% 20 0.39 –– 0.00% 30 0.42 –– 0.00% 30 0.44 –– 0.00% 30 0.46 –– 0.00% 40 0.49 –– 0.00% 40 0.51 0.03 0.14% 40 0.53 0.10 0.14% 50 0.55 0.16 0.14% 50 0.58 0.22 0.14% 50 0.60 0.27 0.14% 60 0.62 0.31 0.17% 60 0.65 0.36 0.17% 60 0.68 0.42 0.17% 70 0.69 0.44 0.17% 70 0.72 0.50 0.22% 70 0.75 0.56 0.22% 80 0.75 0.57 0.22% 80 0.79 0.63 0.22% 80 0.82 0.69 0.28% 90 0.82 0.69 0.28% 90 0.86 0.76 0.28% 90 0.89 0.82 0.28% 100 0.89 0.81 0.28% 100 0.93 0.88 0.33% 100 0.97 0.95 0.33% 110 0.95 0.92 0.33% 110 1.00 0.99 0.33% 110 1.04 1.07 0.42% 120 1.02 1.03 0.42% 120 1.07 1.11 0.42% 120 1.11 1.18 0.48% 130 1.09 1.14 0.42% 130 1.14 1.22 0.48% 130 1.19 1.30 0.48% 140 1.15 1.25 0.48% 140 1.21 1.33 0.55% 140 1.26 1.41 0.55% 150 1.22 1.35 0.55% 150 1.28 1.44 0.55% 150 1.33 1.52 0.67% 160 1.29 1.46 0.55% 160 1.35 1.55 0.67% 160 1.40 1.63 0.67% 170 1.35 1.56 0.67% 170 1.41 1.65 0.83% 170 1.48 1.74 0.83% 180 1.42 1.66 0.83% 180 1.48 1.75 0.83% 180 1.55 1.85 2.22% 190 1.49 1.76 0.83% 190 1.55 1.86 2.22% 200 1.55 1.86 2.22% A-38 padi.com
    • Tec Trimix Instructor Guide AppendixOXYGEN CONTENT 25% OXYGEN CONTENT 27% OXYGEN CONTENT 29%DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 10 0.33 –– 0.00% 10 0.35 –– 0.00% 10 0.38 –– 0.00% 15 0.36 –– 0.00% 15 0.39 –– 0.00% 15 0.42 –– 0.00% 20 0.40 –– 0.00% 20 0.43 –– 0.00% 20 0.47 –– 0.00% 30 0.48 –– 0.00% 30 0.52 0.06 0.14% 30 0.55 0.16 0.14% 40 0.55 0.16 0.14% 40 0.60 0.26 0.14% 40 0.64 0.35 0.17% 50 0.63 0.32 0.17% 50 0.68 0.43 0.17% 50 0.73 0.52 0.22% 60 0.70 0.48 0.17% 60 0.76 0.58 0.22% 60 0.82 0.69 0.28% 70 0.78 0.62 0.22% 70 0.84 0.73 0.28% 70 0.91 0.84 0.33% 80 0.86 0.75 0.28% 80 0.92 0.87 0.33% 80 0.99 0.99 0.33% 90 0.93 0.89 0.33% 90 1.01 1.01 0.42% 90 1.08 1.13 0.42% 100 1.01 1.01 0.42% 100 1.09 1.14 0.42% 100 1.17 1.27 0.48% 110 1.08 1.14 0.42% 110 1.17 1.27 0.48% 110 1.26 1.41 0.55% 120 1.16 1.26 0.48% 120 1.25 1.40 0.55% 120 1.34 1.55 0.67% 130 1.23 1.38 0.55% 130 1.33 1.53 0.67% 130 1.43 1.68 0.83% 140 1.31 1.49 0.67% 140 1.42 1.65 0.83% 140 1.52 1.81 2.22% 150 1.39 1.61 0.67% 150 1.50 1.77 0.83% 150 1.61 1.94 2.22% 160 1.46 1.72 0.83% 160 1.58 1.89 2.22% 170 1.54 1.83 2.22%OXYGEN CONTENT 26% OXYGEN CONTENT 28% OXYGEN CONTENT 30%DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 10 0.34 –– 0.00% 10 0.36 –– 0.00% 10 0.39 –– 0.00% 15 0.38 –– 0.00% 15 0.41 –– 0.00% 15 0.44 –– 0.00% 20 0.42 –– 0.00% 20 0.45 –– 0.00% 20 0.48 –– 0.00% 30 0.50 –– 0.00% 30 0.53 0.11 0.14% 30 0.57 0.20 0.14% 40 0.58 0.21 0.14% 40 0.62 0.30 0.17% 40 0.66 0.40 0.17% 50 0.65 0.38 0.17% 50 0.70 0.48 0.17% 50 0.75 0.57 0.22% 60 0.73 0.53 0.22% 60 0.79 0.63 0.22% 60 0.85 0.74 0.28% 70 0.81 0.68 0.28% 70 0.87 0.79 0.28% 70 0.94 0.89 0.33% 80 0.89 0.81 0.28% 80 0.96 0.93 0.33% 80 1.03 1.05 0.42% 90 0.97 0.95 0.33% 90 1.04 1.07 0.42% 90 1.12 1.19 0.48% 100 1.05 1.08 0.42% 100 1.13 1.21 0.48% 100 1.21 1.34 0.55% 110 1.13 1.21 0.48% 110 1.21 1.34 0.55% 110 1.30 1.48 0.55% 120 1.21 1.33 0.55% 120 1.30 1.47 0.55% 120 1.39 1.62 0.67% 130 1.28 1.45 0.55% 130 1.38 1.60 0.67% 130 1.48 1.75 0.83% 140 1.36 1.57 0.67% 140 1.47 1.73 0.83% 140 1.57 1.88 2.22% 150 1.44 1.69 0.83% 150 1.55 1.86 2.22% 160 1.52 1.81 2.22% 170 1.60 1.92 2.22%padi.com A-39
    • Appendix Tec Trimix Instructor GuideOXYGEN CONTENT 31% OXYGEN CONTENT 33% OXYGEN CONTENT 35%DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 10 0.40 –– 0.00% 10 0.43 –– 0.00% 10 0.46 –– 0.00% 15 0.45 –– 0.00% 15 0.48 –– 0.00% 15 0.51 0.04 0.14% 20 0.50 –– 0.00% 20 0.53 0.10 0.14% 20 0.56 0.18 0.14% 30 0.59 0.24 0.14% 30 0.63 0.33 0.17% 30 0.67 0.40 0.17% 40 0.69 0.44 0.17% 40 0.73 0.52 0.22% 40 0.77 0.61 0.22% 50 0.78 0.62 0.22% 50 0.83 0.71 0.28% 50 0.88 0.80 0.28% 60 0.87 0.79 0.28% 60 0.93 0.88 0.33% 60 0.99 0.98 0.33% 70 0.97 0.95 0.33% 70 1.03 1.05 0.42% 70 1.09 1.15 0.42% 80 1.06 1.10 0.42% 80 1.13 1.21 0.48% 80 1.20 1.32 0.48% 90 1.16 1.25 0.48% 90 1.23 1.37 0.55% 90 1.30 1.48 0.55% 100 1.25 1.40 0.55% 100 1.33 1.52 0.67% 100 1.41 1.64 0.83% 110 1.34 1.54 0.67% 110 1.43 1.67 0.83% 110 1.52 1.80 2.22% 120 1.44 1.68 0.83% 120 1.53 1.82 2.22% 130 1.53 1.82 2.22%OXYGEN CONTENT 32% OXYGEN CONTENT 34% OXYGEN CONTENT 36%DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 10 0.42 –– 0.00% 10 0.44 –– 0.00% 10 0.47 –– 0.00% 15 0.47 –– 0.00% 15 0.49 –– 0.00% 15 0.52 0.08 0.14% 20 0.51 0.05 0.14% 20 0.55 0.14 0.14% 20 0.58 0.21 0.14% 30 0.61 0.29 0.17% 30 0.65 0.37 0.17% 30 0.69 0.44 0.17% 40 0.71 0.48 0.22% 40 0.75 0.57 0.22% 40 0.80 0.65 0.22% 50 0.80 0.66 0.22% 50 0.86 0.75 0.28% 50 0.91 0.84 0.33% 60 0.90 0.83 0.28% 60 0.96 0.93 0.33% 60 1.01 1.02 0.42% 70 1.00 1.00 0.33% 70 1.06 1.10 0.42% 70 1.12 1.20 0.48% 80 1.10 1.16 0.42% 80 1.16 1.27 0.48% 80 1.23 1.37 0.55% 90 1.19 1.31 0.48% 90 1.27 1.43 0.55% 90 1.34 1.54 0.67% 100 1.29 1.46 0.55% 100 1.37 1.58 0.67% 100 1.45 1.70 0.83% 110 1.39 1.61 0.67% 110 1.47 1.74 0.83% 110 1.56 1.87 2.22% 120 1.48 1.75 0.83% 120 1.58 1.89 2.22% 130 1.58 1.90 2.22% A-40 padi.com
    • Tec Trimix Instructor Guide AppendixOXYGEN CONTENT 37% OXYGEN CONTENT 39% OXYGEN CONTENT 42%DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 10 0.48 –– 0.00% 10 0.51 0.03 0.14% 10 0.55 0.14 0.14% 15 0.54 0.12 0.14% 15 0.57 0.19 0.14% 15 0.61 0.29 0.17% 20 0.59 0.25 0.14% 20 0.63 0.32 0.17% 20 0.67 0.42 0.17% 30 0.71 0.48 0.22% 30 0.74 0.55 0.22% 30 0.80 0.66 0.22% 40 0.82 0.69 0.28% 40 0.86 0.77 0.28% 40 0.93 0.88 0.33% 50 0.93 0.88 0.33% 50 0.98 0.97 0.33% 50 1.06 1.09 0.42% 60 1.04 1.07 0.42% 60 1.10 1.16 0.42% 60 1.18 1.30 0.48% 70 1.15 1.25 0.48% 70 1.22 1.35 0.55% 70 1.31 1.49 0.67% 80 1.27 1.43 0.55% 80 1.34 1.53 0.67% 80 1.44 1.69 0.83% 90 1.38 1.60 0.67% 90 1.45 1.71 0.83% 90 1.57 1.87 2.22% 100 1.49 1.76 0.83% 100 1.57 1.88 2.22% 110 1.60 1.93 2.22% OXYGEN CONTENT 40% OXYGEN CONTENT 43%OXYGEN CONTENT 38% DEPTH PO2 OTU/MIN CNS% DEPTH 10 PO2 0.56 OTU/MIN CNS% 0.17 0.14% 10 0.52 0.07 0.14%DEPTH PO2 OTU/MIN CNS% 15 0.58 0.22 0.14% 15 0.63 0.32 0.17% 10 0.50 –– 0.00% 20 0.64 0.35 0.17% 20 0.69 0.45 0.17% 15 0.55 0.15 0.14% 30 0.76 0.59 0.22% 30 0.82 0.69 0.28% 20 0.61 0.29 0.17% 40 0.88 0.80 0.28% 40 0.95 0.92 0.33% 30 0.73 0.52 0.22% 50 1.01 1.01 0.42% 50 1.08 1.13 0.42% 40 0.84 0.73 0.28% 60 1.13 1.21 0.48% 60 1.21 1.34 0.55% 50 0.96 0.93 0.33% 70 1.25 1.40 0.55% 70 1.34 1.54 0.67% 60 1.07 1.12 0.42% 80 1.37 1.58 0.67% 80 1.47 1.74 0.83% 70 1.19 1.30 0.48% 90 1.49 1.76 0.83% 90 1.60 1.93 2.22% 80 1.30 1.48 0.33% 100 1.61 1.94 2.22% 90 1.42 1.65 0.83% 100 1.53 1.82 2.22% OXYGEN CONTENT 41% OXYGEN CONTENT 44% DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 10 0.53 0.11 0.14% 10 0.57 0.20 0.14% 15 0.60 0.25 0.14% 15 0.64 0.35 0.17% 20 0.66 0.39 0.17% 20 0.71 0.48 0.22% 30 0.78 0.62 0.22% 30 0.84 0.73 0.28% 40 0.91 0.84 0.33% 40 0.97 0.96 0.33% 50 1.03 1.05 0.42% 50 1.11 1.17 0.48% 60 1.16 1.25 0.48% 60 1.24 1.38 0.55% 70 1.28 1.45 0.55% 70 1.37 1.59 0.67% 80 1.40 1.63 0.67% 80 1.51 1.79 2.22% 90 1.53 1.82 2.22%padi.com A-41
    • Appendix Tec Trimix Instructor GuideOXYGEN CONTENT 45% OXYGEN CONTENT 48% OXYGEN CONTENT 50%DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 10 0.59 0.23 0.14% 10 0.63 0.32 0.17% 10 0.65 0.37 0.17% 15 0.65 0.38 0.17% 15 0.70 0.46 0.17% 15 0.73 0.52 0.22% 20 0.72 0.51 0.22% 20 0.77 0.60 0.22% 20 0.80 0.66 0.22% 30 0.86 0.76 0.28% 30 0.92 0.86 0.33% 30 0.95 0.92 0.33% 40 1.00 0.99 0.33% 40 1.06 1.10 0.42% 40 1.11 1.17 0.48% 50 1.13 1.21 0.48% 50 1.21 1.33 0.55% 50 1.26 1.41 0.55% 60 1.27 1.43 0.55% 60 1.35 1.56 0.67% 60 1.41 1.64 0.83% 70 1.40 1.64 0.67% 70 1.50 1.78 0.83% 70 1.56 1.87 2.22% 80 1.54 1.84 2.22%OXYGEN CONTENT 46% OXYGEN CONTENT 49%DEPTH PO2 OTU/MIN CNS% DEPTH PO2 OTU/MIN CNS% 10 0.60 0.26 0.14% 10 0.64 0.34 0.17% 15 0.67 0.41 0.17% 15 0.71 0.49 0.22% 20 0.74 0.54 0.22% 20 0.79 0.63 0.22% 30 0.88 0.79 0.28% 30 0.94 0.89 0.33% 40 1.02 1.03 0.42% 40 1.08 1.14 0.42% 50 1.16 1.25 0.48% 50 1.23 1.37 0.55% 60 1.30 1.47 0.55% 60 1.38 1.60 0.67% 70 1.44 1.68 0.83% 70 1.53 1.82 2.22% 80 1.58 1.89 2.22%OXYGEN CONTENT 47%DEPTH PO2 OTU/MIN CNS% 10 0.61 0.29 0.17% 15 0.68 0.44 0.17% 20 0.75 0.57 0.22% 30 0.90 0.83 0.28% 40 1.04 1.07 0.42% 50 1.18 1.29 0.48% 60 1.32 1.51 0.67% 70 1.47 1.73 0.83% 80 1.61 1.94 2.22% A-42 padi.com
    • Tec Trimix Instructor Guide Appendix TRIMIX SAC CONVERSION FACTORS Multiply your SAC rate by the factor to determine your gas comsumption rate at depth. METRIC IMPERIAL Depth (m) Conversion Depth (ft) Conversion Factor Factor 3 1.3 10 1.3 5 1.5 15 1.5 6 1.6 20 1.6 9 1.9 30 1.9 12 2.2 40 2.2 15 2.5 50 2.5 18 2.8 60 2.8 21 3.1 70 3.1 24 3.4 80 3.4 27 3.7 90 3.7 30 4.0 100 4.0 33 4.3 110 4.3 36 4.6 120 4.6 39 4.9 130 4.9 42 5.2 140 5.2 45 5.5 150 5.5 48 5.8 160 5.8 51 6.1 170 6.2 54 6.4 180 6.5 57 6.7 190 6.8 60 7.0 200 7.1 63 7.3 210 7.4 66 7.6 220 7.7 69 7.9 230 8.0 72 8.2 240 8.3 75 8.5 250 8.6 78 8.8 260 8.9 81 9.1 270 9.2 84 9.4 280 9.5 87 9.7 290 9.8 90 10.0 300 10.1padi.com A-43
    • Appendix Tec Trimix Instructor Guide TRIMIX EQUIVALENT NARCOTIC DEPTH TABLE – METRICFraction Depth Meters He 24 27 30 33 36 39 42 45 48 51 54 57 60 63 66 69 72 75 78 81 84 87 90 10% 21 23 26 29 31 34 37 40 42 45 48 50 53 56 58 61 64 67 69 72 75 77 80 11% 20 23 26 28 31 34 36 39 42 44 47 50 52 55 58 60 63 66 68 71 74 76 79 12% 20 23 25 28 30 33 36 38 41 44 46 49 52 54 57 60 62 65 67 70 73 75 78 13% 20 22 25 27 30 33 35 38 40 43 46 48 51 54 56 59 61 64 67 69 72 74 77 14% 19 22 24 27 30 32 35 37 40 42 45 48 50 53 55 58 61 63 66 68 71 73 76 15% 19 21 24 27 29 32 34 37 39 42 44 47 50 52 55 57 60 62 65 67 70 72 75 16% 19 21 24 26 29 31 34 36 39 41 44 46 49 51 54 56 59 61 64 66 69 71 74 17% 18 21 23 26 28 31 33 36 38 41 43 46 48 51 53 56 58 61 63 66 68 71 73 18% 18 20 23 25 28 30 33 35 38 40 42 45 47 50 52 55 57 60 62 65 67 70 72 19% 18 20 22 25 27 30 32 35 37 39 42 44 47 49 52 54 56 59 61 64 66 69 71 20% 17 20 22 24 27 29 32 34 36 39 41 44 46 48 51 53 56 58 60 63 65 68 70 21% 17 19 22 24 26 29 31 33 36 38 41 43 45 48 50 52 55 57 60 62 64 67 69 22% 17 19 21 24 26 28 31 33 35 38 40 42 45 47 49 52 54 56 59 61 63 66 68 23% 16 18 21 23 25 28 30 32 35 37 39 42 44 46 49 51 53 55 58 60 62 65 67 24% 16 18 20 23 25 27 30 32 34 36 39 41 43 45 48 50 52 55 57 59 61 64 66 25% 16 18 20 22 25 27 29 31 34 36 38 40 43 45 47 49 52 54 56 58 61 63 65 26% 15 17 20 22 24 26 28 31 33 35 37 40 42 44 46 48 51 53 55 57 60 62 64 27% 15 17 19 21 24 26 28 30 32 35 37 39 41 43 45 48 50 52 54 56 59 61 63 28% 14 17 19 21 23 25 27 30 32 34 36 38 40 43 45 47 49 51 53 56 58 60 62 29% 14 16 18 21 23 25 27 29 31 33 35 38 40 42 44 46 48 50 52 55 57 59 61 30% 14 16 18 20 22 24 26 29 31 33 35 37 39 41 43 45 47 50 52 54 56 58 60 31% 13 16 18 20 22 24 26 28 30 32 34 36 38 40 42 45 47 49 51 53 55 57 59 32% 13 15 17 19 21 23 25 27 29 31 34 36 38 40 42 44 46 48 50 52 54 56 58 33% 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 34% 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 35% 12 14 16 18 20 22 24 26 28 30 32 34 36 37 39 41 43 45 47 49 51 53 55 36% 12 14 16 18 19 21 23 25 27 29 31 33 35 37 39 41 42 44 46 48 50 52 54 37% 11 13 15 17 19 21 23 25 27 28 30 32 34 36 38 40 42 44 45 47 49 51 53 38% 11 13 15 17 19 20 22 24 26 28 30 32 33 35 37 39 41 43 45 46 48 50 52 39% 11 13 14 16 18 20 22 24 25 27 29 31 33 35 36 38 40 42 44 46 47 49 51 40% 10 12 14 16 18 19 21 23 25 27 28 30 32 34 36 37 39 41 43 45 46 48 50 41% 10 12 14 15 17 19 21 22 24 26 28 30 31 33 35 37 38 40 42 44 45 47 49 42% 10 11 13 15 17 18 20 22 24 25 27 29 31 32 34 36 38 39 41 43 45 46 48 43% 9 11 13 15 16 18 20 21 23 25 26 28 30 32 33 35 37 38 40 42 44 45 47 44% 9 11 12 14 16 17 19 21 22 24 26 28 29 31 33 34 36 38 39 41 43 44 46 45% 9 10 12 14 15 17 19 20 22 24 25 27 29 30 32 33 35 37 38 40 42 43 45 46% 8 10 12 13 15 16 18 20 21 23 25 26 28 29 31 33 34 36 38 39 41 42 44 47% 8 10 11 13 14 16 18 19 21 22 24 26 27 29 30 32 33 35 37 38 40 41 43 48% 8 9 11 12 14 15 17 19 20 22 23 25 26 28 30 31 33 34 36 37 39 40 42 49% 7 9 10 12 13 15 17 18 20 21 23 24 26 27 29 30 32 33 35 36 38 39 41 50% 7 9 10 12 13 15 16 18 19 21 22 24 25 27 28 30 31 33 34 36 37 39 40 51% 7 8 10 11 13 14 15 17 18 20 21 23 24 26 27 29 30 32 33 35 36 38 39 52% 6 8 9 11 12 14 15 16 18 19 21 22 24 25 26 28 29 31 32 34 35 37 38 53% 6 7 9 10 12 13 14 16 17 19 20 21 23 24 26 27 29 30 31 33 34 36 37 54% 6 7 8 10 11 13 14 15 17 18 19 21 22 24 25 26 28 29 30 32 33 35 36 55% 5 7 8 9 11 12 13 15 16 17 19 20 22 23 24 26 27 28 30 31 32 34 35 56% 5 6 8 9 10 12 13 14 16 17 18 19 21 22 23 25 26 27 29 30 31 33 34 57% 5 6 7 8 10 11 12 14 15 16 18 19 20 21 23 24 25 27 28 29 30 32 33 58% 4 6 7 8 9 11 12 13 14 16 17 18 19 21 22 23 24 26 27 28 29 31 32 59% 4 5 6 8 9 10 11 13 14 15 16 17 19 20 21 22 24 25 26 27 29 30 31 60% 4 5 6 7 8 10 11 12 13 14 16 17 18 19 20 22 23 24 25 26 28 29 30 61% 3 4 6 7 8 9 10 11 13 14 15 16 17 18 20 21 22 23 24 25 27 28 29 62% 3 4 5 6 7 9 10 11 12 13 14 15 17 18 19 20 21 22 23 25 26 27 28 63% 3 4 5 6 7 8 9 10 11 13 14 15 16 17 18 19 20 21 23 24 25 26 27 64% 2 3 4 5 7 8 9 10 11 12 13 14 15 16 17 18 20 21 22 23 24 25 26 65% 2 3 4 5 6 7 8 9 10 11 12 13 15 16 17 18 19 20 21 22 23 24 25 66% 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 67% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 68% 1 2 3 4 5 6 7 8 9 10 10 11 12 13 14 15 16 17 18 19 20 21 22 69% 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 14 15 16 17 18 19 20 21 70% 0 1 2 3 4 5 6 7 7 8 9 10 11 12 13 14 15 16 16 17 18 19 20 A-44 padi.com
    • Tec Trimix Instructor Guide Appendix TRIMIX EQUIVALENT NARCOTIC DEPTH TABLE – IMPERIAL Fraction Depth Imperial He 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300 10% 69 78 87 96 105 114 123 132 141 150 159 168 177 186 195 204 213 222 231 240 249 258 267 11% 68 76 85 94 103 112 121 130 139 148 157 165 174 183 192 201 210 219 228 237 246 254 263 12% 66 75 84 93 102 110 119 128 137 146 154 163 172 181 190 198 207 216 225 234 242 251 260 13% 65 74 83 91 100 109 118 126 135 144 152 161 170 178 187 196 205 213 222 231 239 248 257 14% 64 73 81 90 99 107 116 124 133 142 150 159 167 176 185 193 202 210 219 228 236 245 253 15% 63 72 80 89 97 106 114 123 131 140 148 157 165 174 182 191 199 208 216 225 233 242 250 16% 62 70 79 87 96 104 112 121 129 138 146 154 163 171 180 188 196 205 213 222 230 238 247 17% 61 69 77 86 94 102 111 119 127 135 144 152 160 169 177 185 194 202 210 218 227 235 243 18% 60 68 76 84 92 101 109 117 125 133 142 150 158 166 174 183 191 199 207 215 224 232 240 19% 59 67 75 83 91 99 107 115 123 131 140 148 156 164 172 180 188 196 204 212 221 229 237 20% 57 65 73 81 89 97 105 113 121 129 137 145 153 161 169 177 185 193 201 209 217 225 233 21% 56 64 72 80 88 96 104 112 119 127 135 143 151 159 167 175 183 191 198 206 214 222 230 22% 55 63 71 79 86 94 102 110 118 125 133 141 149 157 164 172 180 188 196 203 211 219 227 23% 54 62 69 77 85 93 100 108 116 123 131 139 146 154 162 170 177 185 193 200 208 216 223 24% 53 60 68 76 83 91 98 106 114 121 129 136 144 152 159 167 174 182 190 197 205 212 220 25% 52 59 67 74 82 89 97 104 112 119 127 134 142 149 157 164 172 179 187 194 202 209 217 26% 51 58 65 73 80 88 95 102 110 117 125 132 139 147 154 162 169 176 184 191 199 206 213 27% 49 57 64 71 79 86 93 101 108 115 122 130 137 144 152 159 166 174 181 188 195 203 210 28% 48 56 63 70 77 84 92 99 106 113 120 128 135 142 149 156 164 171 178 185 192 200 207 29% 47 54 61 69 76 83 90 97 104 111 118 125 132 140 147 154 161 168 175 182 189 196 203 30% 46 53 60 67 74 81 88 95 102 109 116 123 130 137 144 151 158 165 172 179 186 193 200 31% 45 52 59 66 73 79 86 93 100 107 114 121 128 135 142 148 155 162 169 176 183 190 197 32% 44 51 57 64 71 78 85 91 98 105 112 119 125 132 139 146 153 159 166 173 180 187 193 33% 43 49 56 63 70 76 83 90 96 103 110 116 123 130 137 143 150 157 163 170 177 183 190 34% 42 48 55 61 68 75 81 88 94 101 108 114 121 127 134 141 147 154 160 167 174 180 187 35% 40 47 53 60 66 73 79 86 92 99 105 112 118 125 131 138 144 151 157 164 170 177 183 36% 39 46 52 59 65 71 78 84 91 97 103 110 116 123 129 135 142 148 155 161 167 174 180 37% 38 44 51 57 63 70 76 82 89 95 101 107 114 120 126 133 139 145 152 158 164 170 177 38% 37 43 49 56 62 68 74 80 87 93 99 105 111 118 124 130 136 142 149 155 161 167 173 39% 36 42 48 54 60 66 73 79 85 91 97 103 109 115 121 127 134 140 146 152 158 164 170 40% 35 41 47 53 59 65 71 77 83 89 95 101 107 113 119 125 131 137 143 149 155 161 167 41% 34 40 45 51 57 63 69 75 81 87 93 99 104 110 116 122 128 134 140 146 152 158 163 42% 33 38 44 50 56 62 67 73 79 85 91 96 102 108 114 120 125 131 137 143 149 154 160 43% 31 37 43 49 54 60 66 71 77 83 88 94 100 106 111 117 123 128 134 140 145 151 157 44% 30 36 41 47 53 58 64 69 75 81 86 92 97 103 109 114 120 125 131 137 142 148 153 45% 29 35 40 46 51 57 62 68 73 79 84 90 95 101 106 112 117 123 128 134 139 145 150 46% 28 33 39 44 50 55 60 66 71 77 82 87 93 98 104 109 114 120 125 131 136 141 147 47% 27 32 37 43 48 53 59 64 69 75 80 85 90 96 101 106 112 117 122 128 133 138 143 48% 26 31 36 41 47 52 57 62 67 73 78 83 88 93 99 104 109 114 119 125 130 135 140 49% 25 30 35 40 45 50 55 60 65 71 76 81 86 91 96 101 106 111 116 122 127 132 137 50% 24 29 34 39 44 49 54 59 64 69 74 79 84 89 94 99 104 109 114 119 124 129 134 51% 22 27 32 37 42 47 52 57 62 66 71 76 81 86 91 96 101 106 111 115 120 125 130 52% 21 26 31 36 40 45 50 55 60 64 69 74 79 84 88 93 98 103 108 112 117 122 127 53% 20 25 30 34 39 44 48 53 58 62 67 72 77 81 86 91 95 100 105 109 114 119 124 54% 19 24 28 33 37 42 47 51 56 60 65 70 74 79 83 88 93 97 102 106 111 116 120 55% 18 22 27 31 36 40 45 49 54 58 63 67 72 76 81 85 90 94 99 103 108 112 117 56% 17 21 26 30 34 39 43 48 52 56 61 65 70 74 78 83 87 92 96 100 105 109 114 57% 16 20 24 28 33 37 41 46 50 54 59 63 67 71 76 80 84 89 93 97 102 106 110 58% 14 19 23 27 31 35 40 44 48 52 56 61 65 69 73 77 82 86 90 94 98 103 107 59% 13 17 22 26 30 34 38 42 46 50 54 58 63 67 71 75 79 83 87 91 95 99 104 60% 12 16 20 24 28 32 36 40 44 48 52 56 60 64 68 72 76 80 84 88 92 96 100 61% 11 15 19 23 27 31 34 38 42 46 50 54 58 62 66 70 73 77 81 85 89 93 97 62% 10 14 18 21 25 29 33 37 40 44 48 52 56 59 63 67 71 75 78 82 86 90 94 63% 9 13 16 20 24 27 31 35 38 42 46 50 53 57 61 64 68 72 75 79 83 87 90 64% 8 11 15 18 22 26 29 33 36 40 44 47 51 54 58 62 65 69 72 76 80 83 87 65% 7 10 14 17 21 24 28 31 35 38 42 45 49 52 56 59 63 66 70 73 77 80 84 66% 5 9 12 16 19 22 26 29 33 36 39 43 46 50 53 56 60 63 67 70 73 77 80 67% 4 8 11 14 17 21 24 27 31 34 37 41 44 47 50 54 57 60 64 67 70 74 77 68% 3 6 10 13 16 19 22 26 29 32 35 38 42 45 48 51 54 58 61 64 67 70 74 69% 2 5 8 11 14 18 21 24 27 30 33 36 39 42 45 49 52 55 58 61 64 67 70 70% 1 4 7 10 13 16 19 22 25 28 31 34 37 40 43 46 49 52 55 58 61 64 67padi.com A-45
    • Appendix Tec Trimix Instructor Guide TRIMIX MAXIMUM DEPTHS IN METRES OF SEAWATERFraction Fraction Fraction O2 @1.4 @1.6 O2 @1.4 @1.6 O2 @1.4 @1.6 10% 130 150 40% 25 30 70% 10 13 11% 117 135 41% 24 29 71% 10 13 12% 107 123 42% 23 28 72% 9 12 13% 98 113 43% 23 27 73% 9 12 14% 90 104 44% 22 26 74% 9 12 15% 83 97 45% 21 26 75% 9 11 16% 78 90 46% 20 25 76% 8 11 17% 72 84 47% 20 24 77% 8 11 18% 68 79 48% 19 23 78% 8 11 19% 64 74 49% 19 23 79% 8 10 20% 60 70 50% 18 22 80% 8 10 21% 57 66 51% 17 21 81% 7 10 22% 54 63 52% 17 21 82% 7 10 23% 51 60 53% 16 20 83% 7 9 24% 48 57 54% 16 20 84% 7 9 25% 46 54 55% 15 19 85% 6 9 26% 44 52 56% 15 19 86% 6 9 27% 42 49 57% 15 18 87% 6 8 28% 40 47 58% 14 18 88% 6 8 29% 38 45 59% 14 17 89% 6 8 30% 37 43 60% 13 17 90% 6 8 31% 35 42 61% 13 16 91% 5 8 32% 34 40 62% 13 16 92% 5 7 33% 32 38 63% 12 15 93% 5 7 34% 31 37 64% 12 15 94% 5 7 35% 30 36 65% 12 15 95% 5 7 36% 29 34 66% 11 14 96% 5 7 37% 28 33 67% 11 14 97% 4 6 38% 27 32 68% 11 14 98% 4 6 39% 26 31 69% 10 13 99% 4 6 100% 4 6 A-46 padi.com
    • Tec Trimix Instructor Guide Appendix TRIMIX MAXIMUM DEPTHS IN FEET OF SEAWATERFraction Fraction Fraction O2 @1.4 @1.6 O2 @1.4 @1.6 O2 @1.4 @1.6 10% 429 495 40% 83 99 70% 33 42 11% 387 447 41% 80 96 71% 32 41 12% 352 407 42% 77 93 72% 31 40 13% 352 407 43% 74 90 73% 30 39 14% 297 344 44% 72 87 74% 29 38 15% 275 319 45% 70 84 75% 29 37 16% 256 297 46% 67 82 76% 28 36 17% 239 278 47% 65 79 77% 27 36 18% 224 260 48% 63 77 78% 26 35 19% 210 245 49% 61 75 79% 25 34 20% 198 231 50% 59 73 80% 25 33 21% 187 218 51% 58 71 81% 24 32 22% 177 207 52% 56 69 82% 23 31 23% 168 197 53% 54 67 83% 23 31 24% 160 187 54% 53 65 84% 22 30 25% 152 178 55% 51 63 85% 21 29 26% 145 170 56% 50 61 86% 21 28 27% 138 163 57% 48 60 87% 20 28 28% 132 156 58% 47 58 88% 20 27 29% 126 149 59% 45 56 89% 19 26 30% 121 143 60% 44 55 90% 18 26 31% 116 137 61% 43 54 91% 18 25 32% 111 132 62% 42 52 92% 17 24 33% 107 127 63% 40 51 93% 17 24 34% 103 122 64% 39 50 94% 16 23 35% 99 118 65% 38 48 95% 16 23 36% 95 114 66% 37 47 96% 15 22 37% 92 110 67% 36 46 97% 15 21 38% 89 106 68% 35 45 98% 14 21 39% 85 102 69% 34 44 99% 14 20 100% 13 20padi.com A-47
    • Appendix Tec Trimix Instructor Guide io n Table p Calculat Deep Sto METRIC 12 9 pth d Stop De 18 15 v 1st Require 24 21 50Bottom/Pre 33 30 27 54 53 51 Stop 39 36 57 56 48 45 42 60 59 51 50Depth 63 62 54 53 66 65 57 56 48 47 90 68 60 59 51 50 63 62 54 53 45 66 65 57 56 48 47 87 60 59 51 50 63 62 54 53 45 44 84 65 57 56 48 47 60 59 51 50 42 63 62 54 53 45 44 81 57 56 48 47 60 59 51 50 42 41 78 62 54 53 45 44 57 56 48 47 39 60 59 51 50 42 41 75 54 53 45 44 57 56 48 47 39 38 72 59 51 50 33 41 54 53 45 44 36 57 56 48 47 39 38 69 51 50 42 41 54 53 45 44 36 35 66 56 48 47 39 38 51 50 42 41 33 54 53 45 44 36 35 63 48 47 39 38 51 50 42 41 33 32 60 53 45 44 36 35 48 47 39 38 30 51 50 42 41 33 32 57 45 44 36 35 48 47 39 38 30 29 54 50 42 41 33 32 45 44 36 35 27 48 47 39 38 30 29 51 42 41 33 32 45 44 36 35 27 26 48 39 38 30 29 42 41 33 32 24 36 35 27 26 45 39 38 30 29 33 32 24 23 42 36 35 27 26 30 29 21 33 32 24 23 39 27 26 29 20 36 30 24 23 21 Principles 27 26 20 18 for Surviv 33 24 23 21 20 18 17 ing a Tec Dive 30 21 17 15 Principle o 27 18 f Seconda 15 14 have at leas t two indepe ry Life Sup 24 12 you alive and un nden port. You t sources of should 21 information, hurt: gas su anything th pply, depth at keeps buoyancy and decom 18 T) 2003 dive on the control, etc. pression Corp. (DSA other. If one fails 15 ience & Te chnology, 010PDE3 , you abort © Diving Sc the . 61400 Ve r 1.0 (05/0 3) Principle o Product No by PADI to handle re f Gas Reserv Distributed asonably fo e. You should plete your reseeable have ampl decompres emergencie e gas or more of sion. This s and still co each gas sh generally m m- ould be a re eans that on serve. e third Principle o f Self Suff you should be able to icienc y. At any poin complete it t in the dive independen , tly. Principle o narcosis, de f Depth. Your compression dive plan sh based on a , oxygen to ould accoun planned de xicity and ga t for that you do pth and a co s supply ne not exceed ntingency eds . depth (and times) Principle o should be f Simplicity planned as (KISS prin eliminated. simple as po ciple). Your ssible, with dive complexities Principle o the rules an f Procedure d work the and Discip dive, no m procedures line. You follo atter how fa without exce w experience miliar the di ption on ev you have. ve and no ery Cutting corn matter how ers kills. much A-48 padi.com
    • Tec Trimix Instructor Guide Appendix io n Table p Calculat Deep Sto IMPERIAL pth 40 30 d Stop De 50 v 1st Require 80 70 60 165Bottom/Pre 0 90 5 170 120 110 10 185 180 17Stop 140 130 195 190 165 160 0Depth 15 205 200 175 170 220 21 5 210 18 5 180 155 300 225 19 5 190 16 5 160 205 200 175 170 21 5 210 5 180 5 150 290 220 190 18 165 160 15 200 195 175 170 210 205 185 180 155 150 145 280 215 19 5 190 16 5 160 205 200 175 170 145 140 270 210 5 180 5 150 190 18 165 160 15 200 195 175 170 145 140 135 260 205 185 180 155 150 5 190 5 160 130 25 0 200 19 175 170 16 145 140 135 185 180 155 150 130 125 240 19 5 190 165 160 135 175 170 145 140 185 180 155 150 130 125 120 230 190 165 160 140 135 5 170 5 180 17 155 150 145 120 115 220 18 165 160 130 125 175 170 140 135 110 0 180 150 145 120 115 21 160 155 130 125 170 165 140 135 110 105 200 175 155 150 145 120 115 165 160 130 125 100 190 170 140 135 110 105 150 145 120 115 160 155 130 125 100 95 180 165 140 135 110 105 150 145 120 115 90 170 160 155 130 125 100 95 140 135 110 105 150 145 120 115 90 85 160 130 125 100 95 140 135 115 110 105 85 80 150 120 90 130 125 100 95 115 110 105 85 80 75 140 120 95 90 100 70 130 110 105 85 80 75 90 120 100 95 80 75 70 65 Principles 90 85 65 60 for Surviv 110 80 75 70 ing a Tec 100 70 65 60 55 Principle o Dive 50 90 65 60 55 have at leas f Secondary 50 45 t two indepe Life Supp 80 55 you alive an ndent sour ort. You shou 45 40 d unhurt: ga ces of anyt ld 70 information, s supply, de hing that ke buoyancy pth and de eps 60 T) 2003 dive on the control, etc. compression chnology, Corp. (DSA other. If one fails 50 ience & Te 010PDE3 , you abort © Diving Sc the 3) . 60400 Ve r 1.0 (05/0 Principle o Product No by PADI to handle re f Gas Reserv Distributed asonably fo e. You should plete your reseeable have ampl decompres emergencie e gas or more of sion. This s and still co each gas sh generally m m- ould be a re eans that on serve. e third Principle o f Self Suff you should be iciency. able to com At any poin plete it inde t in the dive pendently. , Principle o narcosis, de f Depth. Your compression dive plan sh based on a , oxygen to ould accoun planned de xicity and ga t for that you do pth and a co s supply ne not exceed ntingency eds . depth (and times) Principle o should be f Simplicity planned as (KISS prin eliminated. simple as po ciple). Your ssible, with dive complexities Principle o the rules an f Procedure d work the and Discip dive, no m procedures line. You follo atter how fa without exce w experience miliar the di ption on ev you have. ve and no ery Cutting corn matter how ers kills. muchpadi.com A-49
    • Appendix Tec Trimix Instructor Guide OMITTED DECOMPR no DCS sy ESSION – mptoms from deep er than 6 • Return to m/20 ft, stop de pth as quic ideally). kly as poss ible (less th • Decompr an five min ess accord utes 12 m/40 ft ing to sche stop. dule up to and includ • Extend ing 9 m/30 ft st deco time. op and all shallower st ops by 1.5 • Extend times norm final stop be al gas allowin yond 1.5 tim g. es deco tim e as much as practicab OXYGEN le, TOXICITY –CNS sympto • Immedia ms underw tely switch ater • Ascend to low oxyg as much as en gas (bac possible w k gas or tra • Stay on ithout com vel gas) low oxygen promising symptoms gas for at le decompres subside. ast 15 min sion. • Keep PO utes after al l 2 as low as po s Slate deco sche ssible (gas choice/dep Procedure dule. th) for the E mergency __________ __________ __________ __________ __________ t __________ __________ Redescen __________ _____ STOP – Immediate __________ __________ ECOMP RESSION inute if po ssible). __________ __________ __________ _____MISSED D ithin one m __________ __________ descend (w __________ __________ • Imm ediately re inut e. __________ _____ plus one m __________ __________ e the stop rmal schedu le. • Complet rding to no __________ __________ __________ _____ ess acco ible • Decompr t Not Poss ______________ __________ Redescen __________ __________ N STOP – _____ ED DECO MPRESSIO th stops. __________ __________ MISS r combine d time of bo time. __________ __________ op fo times no rmal deco __________ __________ the next st stop by 1.5 __________ __________ _ • Stay at op and final __________ __________ 6 m/20 ft st __________ _____ • Extend g First Sto p __________ __________ __________ re Reachin le. __________ __________ Y IN ASC ENT – Befo mpress on new schedu ______ __________ __________ _____ DELA e and deco in g. __________ __________ y to bottom tim , gas allow _____ • Add dela acticable __________ much as pr __________ final stop as _________ • Extend een Sto ps Betw ASCENT – three minut es. DELAY IN ng er than two- cal if not lo time. • Not criti e as deco wing. unt delay tim le, gas allo • Do not co as much as practicab final stop er, • Extend or shallow inute m 6 m/20 ft m ION – fro than one OMPRESS op in less OM ITTED DEC d re turn to st mptoms an no DCS sy as schedu led. g. compression e de gas allowin able, • Complet h as practic stop as muc er, Extend final or shallow • from 6 m/20 ft te ESSION – ore than one minu DECOMPR m time. OMITTED and return rmal deco mptoms 1.5 times no , no DCS sy op and fin al stop by much as practicable 6 m/20 ft st co time as • Extend 1.5 times de op beyond • Ext end final st g. gas allowin SAT) 2003 y Corp. (D Technolog 010PDE3 Science & © Diving 3) r. 1.0 (05/0 . 60402 Ve Product No by PADI Distributed A-50 padi.com
    • Liability Release and Express Assumption of Risk for Technical Diving Please read carefully, fill in all blanks and initial each paragraph before signing. I, _________________________________________, HEREBY DECLARE THAT I AM A CERTIFIED (Participant) SCUBA DIVER, TRAINED IN SAFE DIVING PRACTICES INCLUDING THE USE OF NITROX, AND AM AWARE OF THE INHERENT HAZARDS OF SCUBA DIVING. _____ I further state that I am an experienced diver and have been certified by the following training organization(s): ____________________________ and that I am aware of the required certification or equivalent experience required to participate in technical diving activities. I have been a certified diver since __________, and have been diving for ________ years, with a total of approximately ________ dives, to a maximum depth of _________ metres/feet (circle one). _____ I further declare that I have been advised and thoroughly informed of the inherent hazards of participating in technical and recreational scuba diving activities, and in consideration of being allowed to participate in this activity, I hereby assume all risks in connection with said activity, for any harm, injury or damage that I may suffer while I am participating in this activity, including all risks connected therewith, whether foreseen or unforeseen. _____ I further declare that I am properly trained, thoroughly informed, and completely under- stand the inherent hazards of Technical Scuba Diving activities, including the risk of serious injury or death. Further, I understand that diving with compressed air, oxygen-enriched air (nitrox) trimix, and 100 percent oxygen involves certain inherent risks that include but are not limited to: decom- pression sickness, embolism, oxygen toxicity, inert gas narcosis, marine life injuries, fire and/or explosion hazards, and barotrauma or hyperbaric injuries which can occur and require treatment in a recompression chamber. I further understand that Technical Scuba Diving activities may be conducted at a site that is remote, either by time or distance or both, from such a recompression chamber. I still choose to participate in such Technical Scuba Diving activities, despite the possi- ble absence of a recompression chamber in proximity to the dive site. _____ I further declare that I understand Technical Diving involves risks which exceed those encountered in recreational scuba diving. These risks may include but are not limited to: depths which exceed the limits of recreational diving; decompression procedures; over-head environ- ments and/or the risk of entanglement which may prevent direct ascent to the surface in the event of an emergency; sudden loss of visibility; necessity for computing both nitrogen and oxygen loading to plan dives; and the need for specialized training, equipment, and planning for different types of Technical Scuba Diving. I understand that Technical Scuba Diving may involve a greater risk of serious injury or death than recreational scuba diving, and I assume the risk of this activity.padi.comG Product No. 10266 Version 1.1 (07/03) A-51 © International PADI, Inc. 2003
    • _____ I understand that I AM SOLELY RESPONSIBLE FOR ENSURING MY OWN SAFETY DURINGPARTICIPATION IN THIS ACTIVITY and agree that: 1) the facility(ies), organization(s) or supervisorypersonnel offering this activity, ___________________, or their employees; 2) the organizers orpromoters of this event; 3) Diving Science and Technology Corp. (DSAT); and 4) International PADIInc. (PADI), its affiliate or subsidiary corporations, any of their respective employees, officers,agents or assigns (1 through 4 hereinafter referred to as "Released Parties"), may not be held liableor responsible in any way for any injury, death or other damages to me or my family, heirs, orassigns, that may occur as a result of my participation in this activity, or as a result of the negligenceof any party, including the Released Parties, whether passive or active._____ I declare that I am in good mental and physical fitness for diving, that I am not under theinfluence of alcohol, nor am I under the influence of any drugs that are contraindicated to diving. IfI am taking any medication, I declare that I have seen a physician and have approval to dive underthe conditions of this activity while under the influence of the medication/drugs._____ I understand that all types of scuba diving, including Technical Diving, are physically strenu-ous activities and that I will be exerting myself during this activity; and if I am injured as a result ofheart attack, panic, hyperventilation, etc. that I assume the risk of said injuries and that I will nothold the Released Parties responsible for the same._____ I will inspect all of my equipment prior to every use during this activity, ensuring that I haveall necessary equipment, and that it is functioning properly. I will not hold the Released Partiesresponsible for my failure to inspect my equipment prior to diving._____ I further save and hold harmless the Released Parties from any claim or lawsuit for personalinjury, property damage or wrongful death, by me, my family, estate, heirs, or assigns, arising out ofmy participation in this activity, including both claims arising during the activity or after I completethe activity._____ I further declare that I am of lawful age and legally competent to sign this liability release,or that I have acquired the written consent of my parent or guardian. I further agree that if any por-tion of this Agreement is held to be invalid for any reason that the remaining provisions shallremain in full force and effect. I, ______________________________________, understand and agree that the terms hereinare contractual and not a mere recital, that this instrument is a legally binding document,and that I have signed this document of my own free act, after reading and understandingthe entire Liability Release and Express Assumption of Risk agreement. __________________ _______________________________________________________ (Date) (Signature of Participant) __________________ _______________________________________________________ (Date) (Signature of Parent or Guardian if applicable) __________________ _______________________________________________________ (Date) (Witness) padi.com A-52
    • Tec Diver Statement of Understanding and Learning AgreementThis statement informs you of hazards, risks and your responsibilities for participating in the DSAT Tec Divercourse. Your signature acknowledges that you accept these risks and responsibilities.I, ___________________________________________________, understand that as a DSAT Tec Diver I should: 1. Maintain good mental and physical health for diving. 10. Accept the responsibility for my personal safety, Refrain from being under the influence of alcohol or while accepting and acknowledging the risks, and drugs when tec diving. Stay proficient in diving demands tec diving imposes. skills, in particular, the skills required for certifica- 11. Stay informed on and dive according to the state tion as a DSAT Tec Diver. of the art in diving, tec diving, dive rescue, dive 2. Engage only in diving activities consistent with my equipment and other influences on my safety as a training and experience. tec diver. 3. Use complete, well-maintained, reliable equipment 12. Accept that technical scuba diving has many gen- for which I have appropriate training. eral risks and hazards that either don’t exist in 4. Adhere to the team diving concept, but always be recreational diving, or aren’t as severe, including: prepared to complete any dive without the assis- • No direct access to the surface in an emergency tance of a team mate. Although self sufficient, the due to decompression requirements. responsible tec diver dives as part of a team and • Hypoxia/hyperoxia resulting from switching to the adheres to team diving principles. wrong gas, which can lead to drowning. 5. Maintain the proper attitude during training in which • Narcosis, which can lead to poor judgment/bad I agree to: decisions that can cause an accident. • Follow the instructor’s directions and dive plans • DCS due to improper gas analysis, missed deco strictly, and not to separate from the instructor or stops, loss of deco gas and individual susceptibili- my dive team. ty. DCS can cause permanent injury or death. • Refrain from tec diving outside this course until I am • Omitted procedures due to task loading, which fully qualified and certified. can lead to accidents, DCS, air embolism, oxygen • Accept the risk for this type of diving, and for spe- toxicity, or drowning. cific risks unique to each dive environment, and to • Drowning or air embolism due to BCD failure. immediately notify the instructor if this risk • Extensive equipment requirements with redundant becomes intolerable for me. configurations, which can lead to ergonomic com- • Recognize the desirability of carrying diver accident plexity, increased risk of error and a physical bur- insurance that covers tec diving (if available in my den. local area), and recognize that my instructor may 13. I accept that a significant difference exists between require me to have it. recreational scuba diving and technical scuba div- 6. Demonstrate self sufficiency – plan each dive as ing, and that in technical scuba diving, even if you though it will be necessary to make the dive and do everything right, there is still a higher inherent handle all emergencies alone. potential for an accident leading to permanent injury or death. 7. Demonstrate discipline and an attitude consistent with responsible technical diving – I will not cut cor- 14. I accept that physical fitness affects my perform- ners, bend the rules, disregard dive plans, omit safe- ance and ability as a tec diver. Lack of the physical ty equipment or exceed the limits of my training. fitness required can affect my safety by limiting my 8. Obtain an orientation when diving in new environ- ability to respond to an emergency, or by directly ments. leading to injuries. It is my responsibility to stay fit 9. Know, obey and respect local diving laws and regula- to dive, and to dive with the limits of my fitness. tions including private land owner relations.I have read the above statements and have had any questions answered to my satisfaction. I understand the impor-tance and purpose of these practices and recognize they are for my own safety and well being.I understand that failing to ahere to the above statements will put me at risk, and may be grounds for my dismissalfrom the Tec Deep Diver course. I acknowledge that the instructor is not permitted to and will not certify me if Idon’t meet all course performance requirements or if I demonstrate an attitude or behavior incompatible withresponsible technical diving practices. __________________________________________________ ___________________________ Participant Signature Day/Month/Yearpadi.comG Product No. 10267 Version 1.0 (07/03) A-53 © International PADI, Inc. 2003
    • Appendix Tec Trimix Instructor GuideSAMPLE TRIMIX DECAL TMx Max Depth OXYGEN HELIUM Diver Product No. 50075 Ver. 1.0 (05/03) 010PDE3 © International PADI, Inc. 2003 A-54 padi.com