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Chst prep core 2016


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This is a ppt I made for a prep class

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Chst prep core 2016

  1. 1. CHST Prep The Core AREAs John Newquist
  2. 2. Confined Space 2
  3. 3. Confined Space 3
  4. 4. Confined Space 4
  5. 5. Confined Space 5
  6. 6. Electrical Current Biological Effect • 1 mA threshold for feeling • 10-20 mA voluntary let-go of circuit impossible • 25 mA onset of muscular contractions • 50-200 mA ventricular fibrillation or cardiac arrest • E. A. Lacy, Handbook of Electronic Safety Procedures, Prentice- Hall: Englewood Cliffs, New Jersey (1977)
  7. 7. Ventricular Fibrillation When the heart is in ventricular fibrillation, the musculature of the ventricles undergoes irregular, uncoordinated twitching resulting in no net blood flow. The condition proves fatal if not corrected in a very short space of time. Normal
  8. 8. GFCI’s –1971 NEC The GFCI operates by sensing the difference between the currents in the Hot and Neutral conductors. Under normal conditions, these should be equal. Will shut off at 5 mA in 1/40th of a second.
  9. 9. Panel Boxes • Must have covers • Three Feet clear space • No live parts over 50 volts • Circuit breaker has a bimetallic strip and heat will caused it to trip
  10. 10. Trenching • Trench 5-6 feet deep. • Spoil at edge. • No access. • Four soil types
  11. 11. Fall Protection • Guardrails • Strength = • Top rail height = • Mid-rail height = • Wire rope/chain deflection of 2 inches
  12. 12. Fall Arrest Components • Definition • Body Harness • Energy Absorbing Lanyard • Anchorage • Max fall arrest is 1800 pounds • Anchorages are 5000 pounds
  13. 13. Covers • Hold twice the weight • Secured • Marked Violation: 4' x 8' sheets of plywood covering a stairway opening to the basement of a house. Only four nails hold the two covers. The cover is not marked.
  14. 14. Scaffolds • OSHA 1926.451 • Training specific for erectors and users. • Inspections before use • Fall protection required above 10 feet. • Suspended scaffolds need independent fall arrest from the scaffold
  15. 15. Scaffold Footing • Baseplates always required. • Mudsills needed if on earth.
  16. 16. Scaffold Planking • Scaffolds must be fully planked, secured and overlapped. • Falling object protection required. • Inspect planks for damage or overloading.
  17. 17. Step Ladders • Used on stable surface • Not used as a ext. ladder • Inspected for defects • Never painted • Never used on a scaffold
  18. 18. Extension Ladder • 4:1 Pitch • 3’ extension above landing • No defects • Not near electrical • Secured from slipping • Capacity 1A = 300 pounds
  19. 19. Cranes • Four main causes of worker death and injury: • Electrocution, (CHST) • Crushed by parts of the equipment, • Struck-by the equipment/load, and • Falls. (See Subpart M 1926.500-503)
  20. 20. 20 Could you get within 20 feet of power line? YES NO Option #1 Deenergize & Ground Encroachment Prevention measures Option #3 Ask Utility for Voltage and Use Table A (with minimum clearance distance) Option #2 20 foot clearance No further action • Planning meeting • If tag lines used Non-conductive • Elevated warning lines, barricade or line of signs •PLUS (Choose one): • Proximity alarm, spotter, warning device, range limiter, or insulating link
  21. 21. Cranes • 1926.1402 (c)(3) • Must ensure that ground preparations are safe • Must inform the user of the equipment and the operator of the location of known hazards beneath the equipment set-up area (such as voids, tanks, utilities) • If there is no controlling entity then the employer that has authority at the site to make or arrange for ground preparations must do so.
  22. 22. 22 Cranes • Shift = visual inspection for apparent deficiencies • Monthly = documented shift inspection • Annual = comprehensive, every 12 months
  23. 23. Load Moment Indicator • Load Moment Indicator tells the operator the weight the crane perceives that is being lifted. (CHST) • It can tell length of boom extended and angle of the boom.
  24. 24. Anti-two Block • Anti-two block systems prevent events caused by unintentional contact between the hook block and the crane sheaves (CHST)
  25. 25. Cranes • 1926.1431 has extensive rules to follow when lifting people. • It must be a last option. • Aerial lifts can often be used in lieu of a personnel platform.
  26. 26. Note: A good operating practice is to keep sling angles from going below 60 degrees 1000 LBS 1000 LBS 1000 LBS 1000 LBS 500LBS 500LBS 1000 LBS 1000 LBS 90 60° 45° 30° Rigging Safety Proper calculation of increased tension caused by sling angles (on all rigging components!).
  27. 27. Rigging Safety • Know the rated capacity of slings and hardware.
  28. 28. Rigging Safety • Allow for D/d ratio on all wire rope slings.
  29. 29. Wire Rope • 1926.251(c)(4)(iv) • Wire rope shall not be used if, in any length of eight diameters, the total number of visible broken wires exceeds 10 percent of the total number of wires, or if the rope shows other signs of excessive wear, corrosion, or defect.
  30. 30. Rigging Safety • For 6-strand wire rope slings, 10 randomly distributed broken wires in one rope lay, or five broken wires in one strand of one rope lay • ASME B30.9 Many are going lower for broken wire
  31. 31. Respiratory Protection • 1910.134 • Written program #2 • Medical evaluation #1 • Fit testing #3, #6 • Selection, Evaluation of exposure #5 • Maintenance, Storage, and Care #9 • Annual Training #8 • Program evaluation #10 • Beards #7 Voluntary use App D - #4
  32. 32. Voluntary Use Requirements (Filtering facepiece only) Appendix D only: • Read and Heed all instructions • Use approved respirators • Properly selected • Keep track of your respirator
  33. 33. Medical Evaluation Requirements • Evaluation completed prior to wearing respirator • Annually thereafter • Evaluation include information in Sections 1 and 2, Part 1 Of Appendix C • Conducted by a physician or licensed health care professional
  34. 34. Fit Testing Quantitative fit testing uses a machine to measure the actual amount of leakage into the face piece and does not rely upon your sense of taste, smell, or irritation in order to detect leakage The fit test shall be administered using an OSHA-accepted QLFT or QNFT protocol. Fit test not done before use. #6 Fit test not done annually #3
  35. 35. User Seal Check
  36. 36. Respirators • Training must be provided prior to use, unless acceptable training has been provided by another employer within the past 12 months • Retraining is required annually, and when: • changes in the workplace or type of respirator render previous training obsolete • there are inadequacies in the employee’s knowledge or use • any other situation arises in which retraining appears necessary • The basic advisory information in Appendix D must be provided to employees who wear respirators when use is not required by this standard or by the employer
  37. 37. Respirators
  38. 38. Health Hazards Classifications Hazard Class Hazard Category Acute Toxicity 1 2 3 4 Skin Corrosion/Irritation 1A 1B 1C 2 Serious Eye Damage/ Eye Irritation 1 2A 2B Respiratory or Skin Sensitization 1 Germ Cell Mutagenicity 1A 1B 2 Carcinogenicity 1A 1B 2 Reproductive Toxicity 1A 1B 2 Lactation STOT – Single Exposure 1 2 3 STOT – Repeated Exposure 1 2 Aspiration 1 Simple Asphyxiants Single Category
  39. 39. Physical Hazards Hazard Class Hazard Category Explosives Unstable Explosives Div 1.1 Div 1.2 Div 1.3 Div 1.4 Div 1.5 Div 1.6 Flammable Gases 1 2 Flammable Aerosols 1 2 Oxidizing Gases 1 Gases under Pressure Compressed Gases Liquefied Gases Refrigerated Liquefied Gases Dissolved Gases 1 Flammable Liquids 1 2 3 4 Self-Reactive Chemicals Type A Type B Type C Type D Type E Type F Type G Pyrophoric Liquids 1 Pyrophoric Solid 1 Pyrophoric Gases Single category Self-heating Chemicals 1 2 Chemicals, which in contact with water, emit flammable gases 1 2 3 Oxidizing Liquids 1 2 3 Oxidizing Solids 1 2 3 Organic Peroxides Type A Type B Type C Type D Type E Type F Type G Corrosive to Metals 1 Combustible Dusts Single Category
  40. 40. (e) Program Requirements Written program List of all hazardous chemicals Addresses non-routine tasks Discusses other contractors responsibilities Available upon request to any employee or contractor
  41. 41. (f) Labels Required Elements Product identifier Signal words Hazard statements Pictograms Precautionary statements Name, address, and telephone number of the chemical manufacturer, importer, or other responsible party A new Appendix C, Allocation of Label Elements, has been provided to indicate the label requirements by hazard class and category Labels are to be updated within 6 months of getting new and significant information about the hazards, or ways to protect those exposed
  42. 42. Pictograms
  43. 43. (g) Safety Data Sheet Format 1. Identification of the substance or mixture and of the supplier 2. Hazards identification 3. Composition/information on ingredients 4. First-aid measures 5. Fire-fighting measures 6. Accidental release measures 7. Handling and storage 8. Exposure controls/personal protection 9. Physical and chemical properties 10. Stability and reactivity 11. Toxicological information 12. Ecological information (non-mandatory) 13. Disposal considerations (non-mandatory) 14. Transport information (non-mandatory) 15. Regulatory information (non-mandatory) 16. Other information, including date of preparation or last revision
  44. 44. Classification of Fires • Class A fires: trash, wood, paper or other combustible materials as the fuel source. • Class B fires: flammable or combustible liquids as the fuel source. • Class C fires: involves electrical equipment. • Class D fires: ignitable metals as a fuel source. • Class K fires: cooking oils and grease, like animals fats and vegetable fats.
  45. 45. Fire triangle: everything a fire needs
  46. 46. Fire • 150 c 1 vi • No extinguisher for 5 pounds of flammable gas or 5 gallons of flammable or combustible gas. • 10B F.E. within 50 feet • Oxygen acetylene must be separated ________ feet or by a ½ hour fire barrier.
  47. 47. Ethics
  48. 48. Routes of Entry • Inhalation • Ingestion • Skin Absorption • Injection
  49. 49. Exposure Limits • Animal Studies • Epidemiological studies • Industrial Experience • STEL – 15 minutes • Ceiling – never exceeded • Threshold Limit Value
  50. 50. Control of Health Hazards • Hierarchy of Controls • Engineering • Substitution • Work practices • Administrative • Personal protective equipment
  51. 51. REMEMBER! • The aforementioned applies to overexposures above 90 dBA TWA (Time- Weighted-Average)
  52. 52. Lead • Many bridges have lead coated surfaces • Requires compliance with 1926.62 • Overexposure can occur in less than 5 minutes when torch cutting or painting • PEL – 50 mcg/m3 Lead coating of bridge beams usually requires an enclosure
  53. 53. Silica • Cutting, hammering, drilling, blasting can create high silica levels • Use wet methods and wear respirators • One of the oldest occupational diseases • New PEL 50 mcg/m3 Tuckpointing has one of the highest silica generating process in construction
  54. 54. Silica • Cutting, hammering, drilling, blasting can create high silica levels • Use wet methods and wear respirators • One of the oldest occupational diseases • New PEL 50 mcg/m3 Tuckpointing has one of the highest silica generating process in construction
  55. 55. Carbon Monoxide • Generators are most common problem of CO • Heaters out of tune are another cause • CO PEL is 50 ppm • Others set levels 25 ppm
  56. 56. Asbestos • Where is it found? • OSHA 0.1f/cc • EPA-recommended clearance criteria for reoccupancy into work area following asbestos abatement, often cited as 0.01 f/cc.
  57. 57. Asbestos
  58. 58. Heat Stress • Train the workforce • Perform the heaviest work in the coolest part of the day • Slowly build up tolerance to the heat and the work activity (usually takes up to two weeks) • Drink plenty of cool water (one cup every 15-20 minutes) • Wear light, loose-fitting, breathable (cotton) clothing • Heat Stoke worst • Heat exhaustion, heat cramps, dehydration Take frequent short breaks in cool or shaded areas Provide fans
  59. 59. Raynaud’s • Raynaud's phenomenon is characterized by a pale to blue to red sequence of color changes of the digits, most commonly after exposure to cold.
  60. 60. Heinrich • 300-29-1 ratio between near- miss incidents, minor injuries, and major injuries • 88 percent of all near misses and workplace injuries resulted from unsafe acts. (old thinking)
  61. 61. Management Leadership • Committed managers • set the philosophy towards safety and health, • focus the efforts, • lead the charge, • engage the employees in the entire process, and • visibly demonstrate their role via active participation.
  62. 62. Job Safety Analysis
  63. 63. Safety Committee VPP • XXX’s Glove Guidelines were created as a result of a safety committee meeting. • They realized the need for a more versatile glove. • The gloves XXX’s provided at the time were uncomfortable. Nor were those gloves adequate for multi-purpose use. • The committee members researched numerous types and styles of gloves, and piloted several gloves researched. • Outcome: Increased glove usage dramatically. XXX’s employees owned the new gloves, as they were responsible for the change. • The change in gloves has also had an immediate impact on company hand injuries. 63
  64. 64. The $12.70 is for one trade. Hazardous trades will pay more.
  65. 65. Root Cause • Event Date: 01/27/2009 • On January 27, 2009, Gerald Holland was walking across an aircraft hanger to exit the building for lunch. • Ice and sleet had been blowing through gaps in the hanger doors, creating slippery conditions on the adjacent floor. • Gerald slipped and fell, striking his head on the concrete floor. He was hospitalized for severe head trauma and later died.
  66. 66. General Duty Clause • Process Safety • Combustible Dust • Ergonomics • Workplace Violence • New chemicals (not listed on Z tables) • Lower Chemicals • Arc Flash – Arc Blast • Heat Illness • Fall Protection • “We are pleased that Fiberdome agreed to adopt the industry recognized 50-ppm (parts per million) limit and believe that all responsible and safety conscious employers who use styrene should consider doing the same thing. • Aug 2014
  67. 67. Questions?