The document provides an overview of the ASME B31.3 Process Piping Code. It discusses the code's philosophy, organization, history, scope, fluid service categories, and application. Key points include that B31.3 applies to process piping systems in chemical, petroleum, and other plants. It covers piping for various fluids and has specific requirements for Category M and high pressure fluid services. The code is organized into chapters that address design, materials, components, fabrication, inspection, and other topics.

1. 1
ASME B31
PRESSURE PIPING
CODE
MOHINDER L. NAYYAR
ASME FELLOW

2. 2
TOPICS
♦ ASME PHILOSPHY
♦ ASME POLICY
♦ CODE EDITION, ADDENDA, CODE
CASES AND INTERPRETATIONS
♦ CODES AND STANDARDS
♦ ASME B31 CODE SECTIONS

3. 3
TOPICS
♦ ASME B31.3 – BRIEF HISTORY
♦ ORGANIZATION OF ASME B31.3
♦ SCOPE AND JURISDICTION OF
ASME B31.3
♦ TYPES OF FLUID SERVICES
♦ HOW TO APPLY ASME B31.3
REQUIRE,MENTS
♦ DYNAMIC EFFECTS

4. 4
ASME CODE PHILOSPHY
♦ ENGINEERING REQUIREMENTS NECESSARY
FOR:
– SAFE DESIGN
– CONSTRUCTION OF PRESSURE PIPING
♦ REQUIREMENTS ARE:
– BASIC DESIGN PRINCIPLES
– FORMULAS
♦ GUIDE FOR SELECTION AND APPLICATION OF PIPING
ELEMENTS
♦ PROHIBITS DESIGNS AND PRACTICES KNOWN TO BE
UNSAFE

5. 5
ASME CODE PHILOSPHY
♦ CODE IS NOT A HANDBOOK
♦ CODE WARNS WHEN CAUTION IS WARRANTED
♦ CODE DOES NOT DIFFERENTIATE
REQUIREMENTS FOR CRITICAL AND
NONCRITICAL PIPING
♦ CODE NEVER INTENTIONALLY PUTS A CEILING
LIMIT ON CONSERVATISM
♦ CODE IS NOT A SUBSTITUTE FOR EDUCATION,
EXPERIENCE, AND SOUND ENGINEERING
JUDGEMENT

6. 6
ASME POLICY
♦ ASME DOES NOT ‘APPROVE”, “RATE”, OR “ENDORSE”
ANY ITEM.
♦ TAKES NO POSITION ON VALIDITY OF PATENT
RIGHTS
♦ DOES NOT INSURE ANYONE OR ASSUME ANY
LIABILITY FOR UTILIZING A STANDARD
♦ DOES NOT TAKE RESPONSIBILITY FOR ISSUANCE OF
INTERPRETATIONS BY INDIVIDUAL VOLUNTEERS
♦ PARTICIPATION BY FEDERAL AGENCY
REPRESENTATIVES DOES NOT CONSTITUTE
GOVERNMENT OR INDUSTRY ENDORSEMENT
♦ CODE CASES DO NOT CONSTITUTE FORMAL REVISION
OF THE CODE.

7. 7
CODE EDITION, ADDENDA, CODE
CASES, AND INTERPRETATIONS
♦ CODE EDITIONS
– PUBLISHED EVERY THREE TO FIVE YEAR
– FOR B31.3, EDITIONS WILL BE PUBLISHED EVERY TWO YEAR
♦ CODE ADDENDA
– PUBLISHED ANNUALLY
– FOR B31.3, NO ADDENDA WILL BE PUBLISHED
♦ APPLICABILITY OF CODE EDITION AND ADDENDA
– NOT TO BE RETROACTIVE UNLESS AGREED UPON
– MANDATORY FOR CONTRACTS AWARDED AFTER SIX
MONTHS OF PUBLICATION
– MUST BE ACCEPTABLE TO ENFORCEMENT AUTHORITIES
– DO NOT PICK AND USE REQUIREMENTS FROM DIFFERENT
EDITIONS AND ADDENDA

8. 8
CODE EDITION, ADDENDA, CODE
CASES, AND INTERPRETATIONS
♦ CODE CASES
– REPLY TO AN INQUIRY
– INCORPORATES NEW REQUIREMENTS
– MODIFIES EXISTING REQUIREMENTS
– ISSUED FOR A LIMITED TIME, USUALLY THREE
YEARS
– MAY BE RENEWED
– MAY EXPIRE OR BE INCORPORATED IN CODE
– MAY BE USED AFTER PUBLICATION
– MAY BE USED AFTER EXPIRY ONLY WHEN
EFFECTIVE ON CONTRACT DATE

9. 9
CODE EDITION, ADDENDA, CODE
CASES, AND INTERPRETATIONS
♦ INTERPRETATIONS
– AN APPROVED RESPONSE TO A WRITTEN
INQUIRY
– SENT DIRECTLY TO THE INQUIRER
– PUBLISHED AS A PART OF
INTERPRETATION SUPPLEMENT

10. 10
CODES AND STANDARDS
♦ CODES
– RULES FOR PIPING
SYSTEMS
– COMPLIANCE IS
MANDATED BY LAW,
CONTRACT, INSURANCE
– CODES OFFER MORE
FLEXIBILITY
– CODES PROHIBIT,
RECOMMEND, AND ALLOW
OPTIONS AND OFFER
CAUTIONS
♦ STANDARDS
– RULES FOR PIPING
COMPONENTS
– COMPLIANCE BY
REFERENCE IN CODES,
STANDARDS AND
SPECIFICATIONS
– OFFER LITTLE OR NO
FLEXIBILITY
– PROHIBIT, CAUTION AND
RECOMMEND
– ENSURES UNIFORMITY AND
INTERCHANGEABILTY

11. 11
ASME B31 PRESSURE PIPING
CODE
♦ ASME B31 PRESSURE PIPING CODE
– ASME B31.1 POWER PIPING
– ASME B31.2 FUEL GAS PIPING (1968)
– ASME B31.3 PROCESS PIPING
– ASME B31.4 PIPELINE
TRANSPORTATION
SYSTEMS FOR LIQUID
HYDROCARBONS AND
OTHER LIQUIDS
– ASME B31.5 REFRIGERATION PIPING

12. 12
ASME B31 PRESSURE PIPING
CODE
♦ ASME B31 PRESSURE PIPING CODE
– ASME B31.7 NUCLEAR POWER PIPING
(1969)
– ASME B31.8 GAS TRANSPORTATION AND
DISTRIBUTION PIPING
SYSTEMS
– ASME B31.9 BUILDING SERVICES PIPING
– ASME B31.11 SLURRY TRANSPORTATION
PIPING SYSTEMS

13. 13
ASME B31 PRESSURE PIPING
CODE
♦ BRIEF HISTORY
– INITIATED WORK ON PROJECT B31, CODE FOR PRESSURE
PIPING, IN 1926
– FIRST EDITION WAS PUBLISHED AS AMERICAN TENTATIVE
STANDARD CODE FOR PRESSURE PIPING IN 1935
– PUBLISHED AS AMERICAN STANDARD CODE FOR PRESSURE
PIPING IN 1937
– PUBLISHED AS ASC B31.1 CODE FOR PRESSURE PIPING IN
1942
– IN 1952 A NEW SECTION OF THE CODE WAS PUBLISHED TO
COVER GAS TRANSMISSION AND DISTRIBUTION PIPING
SYSTEMS
– IN 1955 DECISION WAS MADE TO PUBLISH OTHER
INDUSTRY SECTIONS OF THE CODE

14. 14
ASME B31.3
PROCESS PIPING CODE
♦ BRIEF HISTORY
– FIRST EDITION OF ASA B31.3, PETROLEUM REFINERY
PIPING CODE, WAS PUBLISHED IN 1959
– 1N 1967-1969 ASA BECAME UNITED STATES OF
AMERICA STANDARDS INSTITUTE (USASI)
– IN 1973, IT WAS PUBLISHED AS ANSI B31.3
– IN 1974, ANSI B31.6, CHEMICAL PLANT PIPING CODE,
WAS READY FOR PUBLICATION.
– B31.6 WAS MERGED WITH B31.3 AND PUBLISHED AS
ANSI B31.3, CHEMICAL PLANT AND PETROLEUM
REFINERY PIPING CODE IN 1976.

15. 15
ASME B31.3
PROCESS PIPING CODE
♦ BRIEF HISTORY
– IN 1980, IT WAS PUBLISHED AS ANSI/ASME B31.3
– IN 1981, ANSI B31.10, CRYOGENIC PIPING CODE, WAS
READY FOR PUBLICATION
– IN 1984, B31.10 WAS MERGED WITH ANSI/ASME B31.3
– IN 1990, IT WAS PUBLISHED AS ASME B31.3
– IN 1996, IT WAS PUBLISHED AS ASME B31.3, PROCESS
PIPING CODE.
– 1N 1999, IT WAS PUBLISHED AS ASME B31.3, PROCESS
PIPING CODE
– IN 2002, IT IS PUBLISHED AS ASME B31.3, PROCESS
PIPING CODE

16. 16
ASME B31.3
PROCESS PIPING CODE
♦ ORGANIZATION OF ASME B31.3
• CHAPTER I SCOPE AND JURISDICTION
• CHAPTER II DESIGN
• CHAPTER III MATERIALS
• CHAPTER IV STANDARDS FOR PIPING
COMPONENTS
• CHAPTER V FABRICATION, ASSEMBLY, AND
ERECTION
• CHAPTER VI INSPECTION, EXAMINATION,
AND TESTING
• CHAPTER VII NONMETALLIC PIPING AND
PIPING LINED WITH
NONMETALS
• CHAPTER VIII PIPING FOR CATEGORY M
FLUID SERVICE
• CHAPTER IX HIGH PRESSURE PIPING

17. 17
ASME B31.3
PROCESS PIPING CODE
♦ ORGANIZATION OF CHAPTERS VII –
NONMETALLIC PIPING AND PIPING LINED
WITH NONMETALS
– A300 GENERAL STATEMENTS
– PART 1 CONDITIONS AND CRITERIA
– PART 2 PRESSURE DESIGN OF PIPING COMPONENTS
– PART 3 FLUID SERVICE REQUIREMENTS FOR PIPING
COMPONENTS
– PART 4 FLUID SERVICE REQUIREMENTS FOR PIPING
JOINTS
– PART 5 FLEXIBILITY AND SUPPORT

18. 18
ASME B31.3
PROCESS PIPING CODE
♦ ORGANIZATION OF CHAPTER VII
– PART 6 SYSTEMS
– PART 7 MATERIALS
– PART 8 PIPING COMPONENTS, STANDARDS
– PART 9 FABRICATION, ASSEMBLY, AND ERECTION
– PART 10 INSPECTION, EXAMINATION, AND TESTING

19. 19
ASME B31.3
PROCESS PIPING CODE
♦ CHAPTER VIII PIPING FOR CATEGORY M
FLUID SERVICE
– M300 GENERAL STATEMENTS
– PART 1 CONDITIONS AND CRITERIA
– PART 2 PRESSURE DESIGN OF METALLIC PIPING
COMPONENTS
– PART 3 FLUID SERVICE REQUIREMENTS FOR
METALLIC PIPING COMPONENTS
– PART 4 FLUID SERVICE REQUIREMENTS FOR
METALLIC PIPING JOINTS
– PART 5 FLEXIBILITY AND SUPPORT OF METALLIC
PIPING

20. 20
ASME B31.3
PROCESS PIPING CODE
♦ CHAPTER VIII PIPING FOR CATEGORY M
FLUID SERVICE
– PART 6 SYSTEMS
– PART 7 METALLIC MATERIALS
– PART 8 STANDARDS FOR PIPING COMPONENTS
– PART 9 FABRICATION, ASSEMBLY, AND ERECTION
OF METALLIC PIPING
– PART 10 INSPECTION, EXAMINATION, TESTING AND
RECORDS OF METALLIC PIPING

21. 21
ASME B31.3
PROCESS PIPING CODE
♦ CHAPTER VIII PIPING FOR CATEGORY M
FLUID SERVICE
– MA300 GENERAL STATEMENTS
– PART 11 CONDITIONS AND CRITERIA
– PART 12 PRESSURE DESIGN OF NONMETALLIC PIPING
COMPONENTS
– PART 13 FLUID SERVICE REQUIREMENTS FOR
NONMETALLIC PIPING COMPONENTS
– PART 14 FLUID SERVICE REQUIREMENTS FOR
NONMETALLIC PIPING JOINTS
– PART 15 FLEXIBILITY AND SUPPORT OF
NONMETALLIC PIPING

22. 22
ASME B31.3
PROCESS PIPING CODE
♦ CHAPTER VIII PIPING FOR CATEGORY M
FLUID SERVICE
– PART 16 NONMETALLIC AND NONMETALLIC LINED
SYSTEMS
– PART 17 NONMETALLIC MATERIALS
– PART 18 STANDARDS FOR NONMETALLIC AND
NONMETALLIC LINED PIPING COMPONENTS
– PART 19 FABRICATION, ASEMBLY, AND ERECTION OF
NONMETALLIC AND NONMETALLIC LINED
PIPING
– PART 20 INSPECTION, EXAMINATION, TESTING AND
RECORDS OF NONMETALLIC AND
NONMETALLIC LINED PIPING

23. 23
ASME B31.3
PROCESS PIPING CODE
♦ CHAPTER IX HIGH PRESSURE PIPING
– K300 GENERAL STATEMENTS
– PART 1 CONDITIONS AND CRITERIA
– PART 2 PRESSURE DESIGN OF PIPING COMPONENTS
– PART 3 FLUID SERVICE REQUIREMENTS FOR PIPING
COMPONENTS
– PART 4 FLUID SERVICE REQUIREMENTS FOR PIPING
JOINTS
– PART 5 FLEXIBILITY AND SUPPORT

24. 24
ASME B31.3
PROCESS PIPING CODE
♦ CHAPTER IX HIGH PRESSURE PIPING
– PART 6 SYSTEMS
– PART 7 MATERIALS
– PART 8 STANDARDS FOR PIPING COMPONENTS
– PART 9 FABRICATION, ASSEMBLY, AND ERECTION
– PART 10 INSPECTION, EXAMINATION, AND TESTING

25. 25
ASME B31.3
PROCESS PIPING CODE
♦ ORGANIZATION OF ASME B31.3
– APPENDIX A ALLOWABLE STRESSES AND
QUALITY FACTORS FOR METALLIC
PIPING AND BOLTING MATERIALS
– APPENDIX B STRESS TABLES AND ALLOWABLE
PRESSURE TABLES FOR NONMETALS
– APPENDIX C PHYSICAL PROPERTIES OF PIPING
MATERIALS
– APPENDIX D FLEXIBILITY AND STRESS
INTENSIFICATION FACTORS
– APPENDIX E REFERENCE STANDARDS
– APPENDIX F PRECAUTIONARY CONSIDERATIONS

26. 26
ASME B31.3
PROCESS PIPING CODE
♦ ORGANIZATION OF ASME B31.3
– APPENDIX G SAFEGUARDING
– APPENDIX H SAMPLE CALCULATIONS FOR
BRANCH REINFORCEMENTS
– APPENDIX J NOMENCLATURE
– APPENDIX K ALLOWABLE STRESSES FOR HIGH
PRESSURE PIPING
– APPENDIX L ALUMINUM ALLOY PIPE FLANGES
– APPENDIX M GUIDE TO CLASSIFY FLUIDS
– APPENDIX V ALLOWABLE VARIATIONS IN
ELEVATED TEMPERATURE SERVICE
– APPENDIX X METALLIC BELLOWS EXPANSION JOINTS
– APPENDIX Z PREPARATION OF TECHNICAL INQUIRIES
– INDEX

27. 27

28. 28
ASME B31.3
PROCESS PIPING CODE
♦ SCOPE AND JURISDICTION
– APPLIES TO PIPING IN PETROLEUM REFINERY, CHEMICAL,
PHARMACEUTICAL, TEXTILE, PAPER, SEMICONDUCTOR, AND
CRYOGENIC PLANTS; AND RELATED PROCESSING PLANTS AND
TERMINALS.
– REQUIREMENTS APPLY TO PIPING FOR ALL FLUIDS, INCLUDING:
• RAW, INTERMEDIATE, AND FINISHED CHEMICALS;
• PETROLEUM PRODUCTS;
• GAS, STEAM, AIR, AND WATER;
• FLUIDIZED SOLIDS;
• REFRIGERANTS; AND
• CRYOGENIC FLUIDS.
– APPLIES TO JOINT CONNECTING PIPING TO EQUIPMENT.
– APPLIES TO INTERCONNECTING PIPING WITHIN A
PACKAGED EQUIPMENT

29. 29
♦ B31.3 DOES NOT APPLY TO
– PIPING SYSTEMS (HANDLING NONFLAMMABLE, NONTOXIC,
AND NOT DAMAGING TO HUMAN TISSUE) DESIGNED FOR
INTERNAL GAGE PRESSURES AT OR ABOVE ZERO BUT LESS
THAN 15 psi, AND THE DESIGN TEMPERATURE IS FROM –20 F
TO 366 F.
– POWER BOILERS (ASME SECTION I APPLIES).
– BOILER EXTERNAL PIPING (BEP). ASME B31.1 AND ASME
SECTION I APPLY.
– TUBES, TUBE HEADERS, CROSSOVERS, AND MANIFOLDS OF
FIRED HEATERS, WHICH ARE INTERNAL TO THE HEATER
ENCLOSURES.
– PRESSURE VESSELS, HEAT EXCHANGERS, PUMPS,
COMPRESSORS, AND OTHER FLUID HANDLING OR
PROCESSING EQUIPMENT, INCLUDING INTERNAL PIPING
AND CONNECTIONS FOR EXTERNAL PIPING.
ASME B31.3
PROCESS PIPING CODE

30. 30

31. 31
♦ FLUID SERVICE
– CATEGORY D FLUID SERVICE
• FLUID IS NONFLAMMABLE, NONTOXIC, AND NOT DAMAGING
TO HUMAN TISSUE,
• DESIGN GAGE PRESSURE DOES NOT EXCEED 150 psi, and
• DESIGN TEMPERATURE IS FROM –20 F TO 366 F.
– CATEGORY M FLUID SERVICE
• A FLUID SERVICE IN WHICH A SINGLE EXPOSURE TO A VERY
SAMLL QUANTITY OF A TOXIC FLUID, CAUSED BY LEAKAGE,
CAN PRODUCE SERIOUS IRREVERSIBLE HARM TO PERSONS ON
BREATHING OR BODILY CONTACT, EVEN WHEN PROMPT
RESTORATIVE MEASURES ARE TAKEN.
ASME B31.3
PROCESS PIPING CODE

32. 32
ASME B31.3
PROCESS PIPING CODE
– HIGH PRESSURE FLUID SERVICE
• PIPING HAVING PRESSURES IN EXCESS OF THAT ALLOWED BY
ASME B16.5 CLASS 2500 RATING FOR THE SPECIFIED DESIGN
TEMPERATURE AND MATERIAL GROUP
– NORMAL FLUID SERVICE
• FLUID SERVICE NOT SUBJECT TO THE RULES FOR CATEGORY
D, CATEGORY M, OR HIGH PRESSURE FLUID SERVICE.
– SEVERE CYCLIC CONDITION
• COMPUTED DISPLACEMENT STRESS RANGE EXCEEDS
0.8SA
• NUMBER OF CYCLES EXCEED 7000

33. 33
ASME B31.3
PROCESS PIPING CODE
♦ HOW TO DETERMINE APPLICABLE ASME B31.3
REQUIREMENTS
– CHAPTERS I THROUGH VI IS CALLED THE BASE CODE
– DETERMINE THE CATEGORY OF FLUID SERVICE – USE
APPENDIX M
– WHEN THE FLUID SERVICE IS NEITHER CATEGORY M NOR
IS HIGH PRESSURE, THEN
• REQUIREMENTS OF CHAPTER VIII AND IX DO NOT APPLY.
• IF PIPING TO BE USED IS METALLIC, THEN THE
REQUIREMENTS OF CHAPTER VII DO NOT APPLY.
• FOR METALLIC PIPING, THE REQUIREMENTS OF CHAPTERS I
THROUGH VI SHALL APPLY
• IF PIPING TO BE USED IS NONMETALLIC, ALL REQUIREMENTS
OF CHAPTER VII SHALL APPLY

34. 34

35. 35
ASME B31.3
PROCESS PIPING CODE
♦ HOW TO DETERMINE APPLICABLE ASME B31.3
REQUIREMENTS
– CATEGORY M FLUID SERVICE
• ALL REQUIREMENTS OF CHAPTER VIII SHALL APPLY
– CATEGORY D FLUID SERVICE
• CHAPTERS I THROUGH VII
• CHAPTER VII APPLIES ONLY FOR NONMETALLIC
PIPING
• ELEMENTS SUITABLE FOR OTHER SERVICES MAY BE
APPLIED

36. 36
ASME B31.3
PROCESS PIPING CODE
♦ HOW TO DETERMINE APPLICABLE
ASME B31.3 REQUIREMENTS
– NORMAL FLUID SERVICE
• CHAPTERS I THROUGH VI
• CHAPTER VII FOR NONMETALLIC PIPING
– HIGH PRESSURE FLUID SERVICE
• ALL REQUIREMENTS OF CHAPTER IX APPLY
• CHAPTER IX DOES NOT APPLY TO CATEGORY M
FLUID SERVICE

37. 37
ASME B31.3
PROCESS PIPING CODE
♦ DESIGN CRITERIA
– DESIGN PRESSURE
– DESIGN TEMPERATURE
– AMBIENT EFFECTS
– DYNAMIC EFFECTS
– WEIGHT EFFECTS
– THERMAL EXPANSION AND CONTRACTION EFFECTS
– EFFECTS OF SUPPORT, ANCHOR, AND TERMINAL
MOVEMENTS
– REDUCED DUCTILITY EFFECTS
– CYCLIC EFFECTS
– AIR CONDENSATION EFFECTS

38. 38
ASME B31.3
PROCESS PIPING CODE
♦ DYNAMIC EFFECTS
– IMPACT
– WIND
• METHOD OF ANALYSIS MAY BE PER
– ASCE 7 – MINIMUM DESIGN LOADS FOR BUILDING AND
OTHER STRUCTURES, OR
– UNIFORM BUILDING CODE
– EARTHQUAKE
• SHALL BE DESIGNED FOR EARTHQUAKE-INDUCED
HORIZONTAL FORCES
• METHOD OF ANALYSIS MAY BE PER ASCE 7, OR
UNIFORM BUILDING CODE
– VIBRATION
– DISCHARGE REACTION

39. 39
ASME B31.3
PROCESS PIPING CODE
♦ ALLOWABLE STRESSES
♦ BASIC ALLOWABLE STRESSES , S, IN TENSION
FOR METALS – REFER TO TABLE A-1
♦ DESIGN STRESSES, S, FOR BOLTING
MATERIALS – REFER TO TABLE A-2
♦ DESIGN CALCULATIONS
– USING SE REQUIRES S BE MULTIPLIED BY EITHER
• CASTING QUALITY FACTOR, Ec, FROM TABLE A-1A, OR
• LONGITUDINAL WELD JOINT FACTOR, Ej, FROM TABLE
A-1B AND TABLE 302.3.4

40. 40
ASME B31.3
PROCESS PIPING CODE
♦ LIMITS OF CALCULATED STRESSES DUE TO
OCCASIONAL LOADS
♦ SUM OF THE FOLLOWING MAY BE AS HIGH AS
1.33 TIMES THE BASIC ALLOWABLE STRESSES
GIVEN IN APPENDIX A
– PRESSURE, WEIGHT, AND OTHER SUSTAINED
LOADINGS, AND
– STRESSES PRODUCED BY OCCASIONAL LOADS SUCH
AS WIND OR EARTHQUALKE
♦ FOR CASTINGS, VALUE OF BASIC ALLOWALE
STRESS MUST BE MULTIPLIED WITH CASTING
QUALITY FACTOR, Ec.

41. 41
ASME B31.3
PROCESS PIPING CODE
♦ WTP PIPING SEISMIC QUALIFICATIONS
♦ SEISMIC CATEGORIES (SC)
– STRUCTURES, SYSTEMS AND COMPONENTS (SSC)
CATEGORIZED AS SEISMIC CATEGORY I, II, III, IV, OR
V
– SEISMIC CATEGORY IS BASED ON CONTENTS AND
FUNCTIONALITY FOLLOWING A SEISMIC EVENT
– CATEGORY ALSO DEFINES APPLICABLE ANALYSIS
METHOD AND THE ACCEPTANCE CRITERIA

42. 42
ASME B31.3
PROCESS PIPING CODE
♦ NATURAL PHENOMENON HAZARD (NPH)
PERFORMANCE CATEGORIES (PC) PER DOE-
STD-1020-94
PERFORMANCE
CATEGORY (PC)
PERFORMANCE GOAL DESCRIPTION
PC-0 NO SAFETY, MISSION,, OR COST CONSIDERATIONS
PC-01 MAINTAIN OCCUPANT SAFETY
PC-02 OCCUPANT SAFETY, CONTINUED OPERATION, WITH MINIMUM
INTERRUPTION
PC-03 OCCUPANT SAFETY, CONTINUED OPERATION, HAZARD
CONFINEMENT
PC-04 OCCUPANT SAFETY, CONTINUED OPERATION, CONFIDENCE OF
HAZARD CONFINEMENT

43. 43
ASME B31.3
PROCESS PIPING CODE
♦ RELATION BETWEEN PC AND SC
PERFORMANCE CATEGORY SEISMIC CATEGORY
PC-0 SC-V
PC-1 SC-IV
PC-2 SC-III
PC-3 SC-I, SC-II
PC-4 NOT REQUIRED FOR WTP

44. 44
ASME B31.3
PROCESS PIPING CODE
♦ SUMMARY
– HISTORY
– SCOPE AND JURISDICTION
– TYPES OF FLUID SERVICE
– HOW TO APPLY REQUIREMENTS OF
ASME B31.3
– DESIGN CRITERIA
– DYNAMIC ANALYSIS
– QUESTIONS AND ANSWERS