NFPA 496 : 2017
Superseded
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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PURGED AND PRESSURIZED ENCLOSURES FOR ELECTRICAL EQUIPMENT
Available format(s)
Hardcopy
Superseded date
14-08-2021
Superseded by
Language(s)
English
Published date
01-01-2017
Publisher
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Chapter 1 - Administration
Chapter 2 - Referenced Publications
Chapter 3 - Definitions
Chapter 4 - General Requirements for Pressurized
Enclosures
Chapter 5 - Pressurized Enclosures for Class I
Chapter 6 - Pressurized Enclosures for Class II
Chapter 7 - Pressurized Control Rooms
Chapter 8 - Pressurized Enclosures Having an Internal
Source of Flammable Gas or Vapor
Chapter 9 - Pressurized Analyzer Rooms Containing a
Source of Flammable Gas, Vapor, or Liquid
Annex A - Explanatory Material
Annex B - Informational References
Index
Gives information on the methods for purging and pressurizing enclosures to prevent ignition of a flammable atmosphere.
| DocumentType |
Standard
|
| Pages |
29
|
| PublisherName |
National Fire Protection Association
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| Status |
Superseded
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| SupersededBy | |
| Supersedes |
| IEEE 303-2004 | IEEE Recommended Practice for Auxiliary Devices for Rotating Electrical Machines in Class I, Division 2 and Zone 2 Locations |
| API 500B : 88 ERRATA | RECOMMENDED PRACTICE FOR CLASSIFICATION OF LOCATIONS FOR ELECTRICAL INSTALLATIONS AT DRILLING RIGS & PRODUCTION FACILITIES ON LAND & ON MARINE FIXED & MOBILE PLATFORMS |
| 01/208810 DC : 0 | IEC 62185 ED.2 - INDUSTRIAL-PROCESS CONTROL - SAFETY OF ANALYZER HOUSES |
| BS EN 61285:2015 | Industrial-process control. Safety of analyzer houses |
| FM 3600 : 2018 | ELECTRICAL EQUIPMENT FOR USE IN HAZARDOUS (CLASSIFIED) LOCATIONS - GENERAL REQUIREMENTS |
| IEEE 3004.8-2016 | IEEE Recommended Practice for Motor Protection in Industrial and Commercial Power Systems |
| ANSI FC 1 : 2012 | STATIONARY FUEL CELL POWER SYSTEMS |
| API 500A : 4ED 82(R1987) | CLASSIFICATION OF LOCATIONS FOR ELECTRICAL INSTALLATIONS IN PETROLEUM REFINERIES |
| ANSI/CSA HGV 4.8-2012 (R2018) | Hydrogen gas vehicle fueling station compressor guidelines |
| CSA HPIT 2-2017 | Dispensing systems and components for fueling hydrogen powered industrial trucks |
| NFPA 61B : 1989 | PREVENTION OF FIRES AND EXPLOSIONS IN GRAIN ELEVATORS AND FACILITIES HANDLING BULK RAW AGRICULTURAL COMMODITIES |
| ASTM D 6060 : 2017 : REDLINE | Standard Test Method for Sampling of Process Vents with a Portable Gas Chromatograph |
| NFPA 30 : 2018 | FLAMMABLE AND COMBUSTIBLE LIQUIDS CODE |
| NFPA 33 : 2018 | SPRAY APPLICATION USING FLAMMABLE OR COMBUSTIBLE MATERIALS |
| NFPA 35 : 2016 | MANUFACTURE OF ORGANIC COATINGS |
| NFPA 400 : 2016 | HAZARDOUS MATERIALS CODE |
| NFPA 70B : 2016 | RECOMMENDED PRACTICE FOR ELECTRICAL EQUIPMENT MAINTENANCE |
| BS EN ISO 10439:2002 | Petroleum, chemical and gas service industries. Centrifugal compressors |
| PIP ELCGL01 : 2013 | ELECTRICAL DESIGN CRITERIA |
| IPC HDBK 830 : A | GUIDELINES FOR DESIGN, SELECTION AND APPLICATION OF CONFORMAL COATINGS |
| FM 3620 : 2018 | PURGED AND PRESSURIZED ELECTRICAL EQUIPMENT FOR HAZARDOUS (CLASSIFIED) LOCATIONS |
| I.S. EN ISO 10439:2002 | PETROLEUM, CHEMICAL AND GAS SERVICE INDUSTRIES - CENTRIFUGAL COMPRESSORS |
| CSA PLUS 2203 : 2001 | HAZARDOUS LOCATIONS - GUIDE FOR THE DESIGN, TESTING, CONSTRUCTION, AND INSTALLATION OF EQUIPMENT IN EXPLOSIVE ATMOSPHERES |
| ISA 12.13.01 : 2003 | PERFORMANCE REQUIREMENTS FOR COMBUSTIBLE GAS DETECTORS |
| SAE J2578_201408 | Recommended Practice for General Fuel Cell Vehicle Safety |
| CSA/ANSI NGV 4.1-2018 | Natural gas vehicle (NGV) dispensing systems |
| API 672 : 2004 | PACKAGED, INTEGRALLY GEARED CENTRIFUGAL AIR COMPRESSORS FOR PETROLEUM, CHEMICAL, AND GAS INDUSTRY SERVICES |
| NFPA 49 : 1994 | HAZARDOUS CHEMICALS DATA |
| Z276-18 | Liquefied natural gas (LNG) - Production, storage, and handling |
| C22.1-15 PACKAGE | Consists of C22.1-15, Canadian electrical code, part I (23rd edition), safety standard for electrical installations; C22.1HB-15, Canadian electrical code handbook - an explanation of rules of the Canadian electrical code, part I and the 2015 Electrical quick reference |
| API 500 RUSSIAN :1997 | RECOMMENDED PRACTICE FOR CLASSIFICATION OF LOCATIONS FOR ELECTRICAL INSTALLATIONS AT PETROLEUM FACILITIES CLASSIFIED AS CLASS 1, DIVISION 1 AND DIVISION 2 |
| API 500 RUSSIAN : 1997 : R2002 | RECOMMENDED PRACTICE FOR CLASSIFICATION OF LOCATIONS FOR ELECTRICAL INSTALLATIONS AT PETROLEUM FACILITIES CLASSIFIED AS CLASS 1, DIVISION 1 AND DIVISION 2 |
| NFPA 59A : 2016 | PRODUCTION, STORAGE, AND HANDLING OF LIQUEFIED NATURAL GAS (LNG) |
| NFPA 2 : 2016 | HYDROGEN TECHNOLOGIES CODE |
| NFPA 52 : 2016 | VEHICULAR NATURAL GAS FUEL SYSTEMS CODE |
| NFPA 301 : 2018 | SAFETY TO LIFE FROM FIRE ON MERCHANT VESSELS |
| NFPA 820 : 2016 | FIRE PROTECTION IN WASTEWATER TREATMENT AND COLLECTION FACILITIES |
| ISA RP92.04.02-2 : 1996 | INSTALLATION, OPERATION, AND MAINTENANCE OF INSTRUMENTS USED TO DETECT OXYGEN-DEFICIENT/OXYGEN-ENRICHED ATMOSPHERES |
| NFPA 1 : 2021 | FIRE CODE |
| C22.1HB-18 | Canadian Electrical Code Handbook - An Explanation of the Rules of the Canadian Electrical Code, Part I |
| ISA 92.04.01-1 : 2007 | PERFORMANCE REQUIREMENTS FOR INSTRUMENTS USED TO DETECT OXYGEN-DEFICIENT/OXYGEN-ENRICHED ATMOSPHERES |
| ISA 12.00.01 : 2002 | ELECTRICAL APPARATUS FOR USE IN CLASS 1, ZONE 0, 1 AND 2 HAZARDOUS (CLASSIFIED) LOCATIONS - GENERAL REQUIREMENTS |
| PIP PCSPA003 : 2017 | INSTRUCTIONS FOR PROCESS ANALYZER SHELTER DATA SHEETS |
| PIP PCCPA001 : 2016 | PROCESS ANALYZER SYSTEM DESIGN CRITERIA |
| ISA RP60.4 : 1990 | DOCUMENTATION FOR CONTROL CENTERS |
| API 500C : 2ED 84(R1990) | CLASSIFICATION OF LOCATIONS FOR ELECTRICAL INSTALLATIONS AT PIPELINE TRANSPORTATION FACILITIES |
| 03/305413 DC : DRAFT APR 2003 | IEC 61285 ED. 2.0 - INDUSTRIAL PROCESS CONTROL - SAFETY OF ANALYZER HOUSES |
| ANSI/CSA FC 1:2014 | FUEL CELL TECHNOLOGIES - PART 3-100: STATIONARY FUEL CELL POWER SYSTEMS - SAFETY |
| NFPA 36 : 2017 | SOLVENT EXTRACTION PLANTS |
| NFPA 651 : 1998 | MACHINING AND FINISHING OF ALUMINUM AND THE PRODUCTION AND HANDLING ALUMINUM POWDERS |
| NFPA 61 : 2017 | PREVENTION OF FIRES AND DUST EXPLOSIONS IN AGRICULTURAL AND FOOD PROCESSING FACILITIES |
| API 670 : 2014 | MACHINERY PROTECTION SYSTEMS |
| ISA 12.10 : 1988 | AREA CLASSIFICATION IN HAZARDOUS (CLASSIFIED) DUST LOCATIONS |
| CSA HGV 4.6 : 2013 | MANUALLY OPERATED VALVES FOR USE IN GASEOUS HYDROGEN VEHICLE FUELING STATIONS |
| NFPA 53 : 2016 | MATERIALS, EQUIPMENT, AND SYSTEMS USED IN OXYGEN-ENRICHED ATMOSPHERES |
| CSA 12.5 : 1999 : R2014 | NGV DISPENSING SYSTEMS |
| API STD 541 : 2014 | FORM-WOUND SQUIRREL CAGE INDUCTION MOTORS - 375 KW (500 HORSEPOWER) AND LARGER |
| NFPA 65 : 1993 | PROCESSING AND FINISHING OF ALUMINUM |
| FM 3640 : 2013 | LAND MOBILE RADIOS FOR USE IN CLASS I, DIVISION 1 HAZARDOUS (CLASSIFIED) LOCATIONS |
| API 2610 : 2005 : R2010 | DESIGN, CONSTRUCTION, OPERATION, MAINTENANCE, AND INSPECTION OF TERMINAL AND TANK FACILITIES |
| API 14F : 2008 : R2013 | DESIGN, INSTALLATION, AND MAINTENANCE OF ELECTRICAL SYSTEMS FOR FIXED AND FLOATING OFFSHORE PETROLEUM FACILITIES FOR UNCLASSIFIED AND CLASS 1, DIVISION 1 AND DIVISION 2 LOCATIONS |
| API 540 : 1999 : R2006 | ELECTRICAL INSTALLATIONS IN PETROLEUM PROCESSING PLANTS |
| API 551 : 2016 | PROCESS MEASUREMENT |
| NFPA 55 : 2016 | COMPRESSED GASES AND CRYOGENIC FLUIDS CODE |
| NFPA 61 : 2020 | PREVENTION OF FIRES AND DUST EXPLOSIONS IN AGRICULTURAL AND FOOD PROCESSING FACILITIES |
| NASA KSC E 165 : 2009 | ELECTRICAL GROUND SUPPORT EQUIPMENT FABRICATION, SPECIFICATION FOR |
| NASA KSC STD Z 0006 : 1995 | DESIGN OF HYPERGOLIC PROPELLANTS GROUND SUPPORT EQUIPMENT, STANDARD FOR |
| NASA KSC STD E 0002 : 2009 | HAZARDPROOFING OF ELECTRICALLY ENERGIZED EQUIPMENT, STANDARD FOR |
| NASA STD 5005 : 2013 | STANDARD FOR THE DESIGN AND FABRICATION OF GROUND SUPPORT EQUIPMENT |
| NASA STD 5005(INT) : 2007 | THE DESIGN AND FABRICATION OF GROUND SUPPORT EQUIPMENT |
| NASA KSC DE 512-SM : 2012 | FACILITY SYSTEMS, GROUND SUPPORT SYSTEMS, AND GROUND SUPPORT EQUIPMENT GENERAL DESIGN REQUIREMENTS |
| NASA STD 8719.24 : 2011 | NASA EXPENDABLE LAUNCH VEHICLE PAYLOAD SAFETY REQUIREMENTS |
| NASA KSC STD 164 : 1992 | ENVIRONMENTAL TEST METHODS FOR GROUND SUPPORT EQUIPMENT, STANDARD FOR |
| CSA CE CODE SAFETY PACKAGE : 2012 | CE CODE SAFETY PACKAGE |
| NFPA 50B : 1999 | LIQUEFIED HYDROGEN SYSTEMS AT CONSUMER SITES |
| 13/30271477 DC : 0 | BS EN 61285 ED 3.0 - INDUSTRIAL-PROCESS CONTROL - SAFETY OF ANALYSER HOUSES |
| API 55 : 1995 : R2013 | RECOMMENDED PRACTICE FOR OIL AND GAS PRODUCING AND GAS PROCESSING PLANT OPERATIONS INVOLVING HYDROGEN SULFIDE |
| API 55 :1995 | RECOMMENDED PRACTICE FOR OIL AND GAS PRODUCING AND GAS PROCESSING PLANT OPERATIONS INVOLVING HYDROGEN SULFIDE |
| API 552 : 1994 | TRANSMISSION SYSTEMS |
| I.S. EN 61285:2015 | INDUSTRIAL-PROCESS CONTROL - SAFETY OF ANALYZER HOUSES |
| API 546 : 2008 | BRUSHLESS SYNCHRONOUS MACHINES - 500 KVA AND LARGER |
| API 681 : 1996 | LIQUID RING VACUUM PUMPS AND COMPRESSORS FOR PETROLEUM, CHEMICAL, AND GAS INDUSTRY SERVICES |
| CSA 12.5 : 1999 : R2004 | NGV DISPENSING SYSTEMS |
| API 554-2 : 2008 : R2016 | PROCESS CONTROL SYSTEMS - PROCESS CONTROL SYSTEM DESIGN |
| API 505 : 1997 | RECOMMENDED PRACTICE FOR CLASSIFICATION OF LOCATIONS FOR ELECTRICAL INSTALLATIONS AT PETROLEUM FACILITIES CLASSIFIED AS CLASS I, ZONE 0, ZONE 1, AND ZONE 2 |
| SAE J2579_201303 | Standard for Fuel Systems in Fuel Cell and Other Hydrogen Vehicles |
| ABS 0057 : 2017 COR 2017 | GUIDE FOR THE CLASSIFICATION OF DRILLING SYSTEMS |
| API RP 14F:2008 | DESIGN, INSTALLATION, AND MAINTENANCE OF ELECTRICAL SYSTEMS FOR FIXED AND FLOATING OFFSHORE PETROLEUM FACILITIES FOR UNCLASSIFIED AND CLASS 1, DIVISION 1 AND DIVISION 2 LOCATIONS |
| API 540:1999 | ELECTRICAL INSTALLATIONS IN PETROLEUM PROCESSING PLANTS |
| API 2610:2005 | DESIGN, CONSTRUCTION, OPERATION, MAINTENANCE, AND INSPECTION OF TERMINAL AND TANK FACILITIES |
| ISO 10439:2002 | Petroleum, chemical and gas service industries Centrifugal compressors |
| IEC 61285:2015 | Industrial-process control - Safety of analyser houses |
| EN ISO 10439:2002 | Petroleum, chemical and gas service industries - Centrifugal compressors (ISO 10439:2002) |
| API 555 : 2013 | PROCESS ANALYZERS |
| ABS 0063 : 2018 COR 2018 | RULES FOR BUILDING AND CLASSING FACILITIES ON OFFSHORE INSTALLATIONS |
| API SPEC 16C : 2015 | CHOKE AND KILL EQUIPMENT |
| API 55 : 1995 : R2007 | RECOMMENDED PRACTICE FOR OIL AND GAS PRODUCING AND GAS PROCESSING PLANT OPERATIONS INVOLVING HYDROGEN SULFIDE |
| NFPA 484 : 2015 | COMBUSTIBLE METALS |
| API 554-2 : 2008 | PROCESS CONTROL SYSTEMS - PROCESS CONTROL SYSTEM DESIGN |
| API 681 : 1996 : R2010 | LIQUID RING VACUUM PUMPS AND COMPRESSORS FOR PETROLEUM, CHEMICAL, AND GAS INDUSTRY SERVICES |
| IEEE 1349-2011 REDLINE | IEEE Guide for Application of Electric Motors in Class I, Division 2 and Class I, Zone 2 Hazardous (Classified) Locations |
| CSA HGV 4.7:2013:(R2018) | AUTOMATIC VALVES FOR USE IN GASEOUS HYDROGEN VEHICLE FUELING STATIONS |
| NFPA 61D : 1989 | PREVENTION OF FIRE AND DUST EXPLOSIONS IN THE MILLING OF AGRICULTURAL COMMODITIES FOR HUMAN CONSUMPTION |
| NFPA 61A : 1989 | PREVENTION OF FIRE AND DUST EXPLOSIONS IN FACILITIES MANUFACTURING AND HANDLING STARCH |
| NFPA 61C : 1989 | PREVENTION OF FIRE AND DUST EXPLOSION IN FEED MILLS |
| API 2001 : 2012 | FIRE PROTECTION IN REFINERIES |
| API 14FZ : 2013 | RECOMMENDED PRACTICE FOR DESIGN, INSTALLATION, AND MAINTENANCE OF ELECTRICAL SYSTEMS FOR FIXED AND FLOATING OFFSHORE PETROLEUM FACILITIES FOR UNCLASSIFIED AND CLASS 1, ZONE 0, ZONE 1, AND ZONE 2 LOCATIONS |
| API 14F REDLINE : 2008 | DESIGN, INSTALLATION, AND MAINTENANCE OF ELECTRICAL SYSTEMS FOR FIXED AND FLOATING OFFSHORE PETROLEUM FACILITIES FOR UNCLASSIFIED AND CLASS 1, DIVISION 1 AND DIVISION 2 LOCATIONS |
| API 500 : 2012 | RECOMMENDED PRACTICE FOR CLASSIFICATION OF LOCATIONS FOR ELECTRICAL INSTALLATIONS AT PETROLEUM FACILITIES CLASSIFIED AS CLASS 1, DIVISION 1 AND DIVISION 2 |
| NFPA 1 : 2018 | FIRE CODE |
| CSA HGV 4.1 : 2013 | STANDARD FOR HYDROGEN DISPENSING SYSTEMS |
| EN 61285:2015 | Industrial-process control - Safety of analyzer houses |
| ISA RP92.06.02 : 1999 | INSTALLATION, OPERATION, AND MAINTENANCE OF CHLORINE DETECTION INSTRUMENTS (0.5-30 PPM FULL SCALE) |
| ISA 92.02.01-1 : 1998 | PERFORMANCE REQUIREMENTS FOR CARBON MONOXIDE DETECTION INSTRUMENTS (50-1000 PPM FULL SCALE) |
| PIP ARC01015 : 2014 | ARCHITECTURAL AND BUILDING UTILITIES DESIGN CRITERIA |
| PIP PCSCP001 : 2009 | CONTROL PANELS SPECIFICATION |
| NFPA 400 : 2019 | Hazardous Materials Code |
| PIP ELEHA01 : 2016 | ENGINEERING GUIDE FOR DETERMINING ELECTRICAL AREA CLASSIFICATION |
| ISA 92.02.01-1 : 1998 : R2007 | PERFORMANCE REQUIREMENTS FOR CARBON MONOXIDE DETECTION INSTRUMENTS (50-1000 PPM FULL SCALE) |
| PIP PCEPA002 : 2016 | PROCESS ANALYZER PROJECT IMPLEMENTATION GUIDELINES |
| ISA RP92.03.02 : 1999 | INSTALLATION, OPERATION, AND MAINTENANCE OF AMMONIA DETECTION INSTRUMENTS (25-500 PPM - FULL SCALE) |
| ISA RP92.02.02-2 : 1998 | INSTALLATION, OPERATION, AND MAINTENANCE OF CARBON MONOXIDE DETECTION INSTRUMENTS (50-1000 PPM FULL SCALE) |
| ISA RP12.4 : 1996 | PRESSURIZED ENCLOSURES |
| ISA 12.13.0 : *DUPLICATE RECORD* | **DUPLICATE RECORD** |
| PIP PCSCP001 : 2014 | CONTROL PANELS SPECIFICATION |
| ISA RP92.0.02-2 : 1998 | INSTALLATION, OPERATION, AND MAINTENANCE OF TOXIC GAS-DETECTION INSTRUMENTS: HYDROGEN SULFIDE |
| PIP PCCEL001 : 2020 | INSTRUMENTATION ELECTRICAL DESIGN CRITERIA |
| API RP 2001:2019 | Fire Protection in Refineries |
| PIP ELSPS01 : 2017 | ELECTRICAL REQUIREMENTS FOR PACKAGED EQUIPMENT |
| PIP PCCEL001 : 2015 | INSTRUMENTATION ELECTRICAL DESIGN CRITERIA |
| PIP ELSSG11 : 2017 | ELECTRICAL POWER CENTER SPECIFICATION |
| NFPA 69 : 2014 | EXPLOSION PREVENTION SYSTEMS |
| ISA RP12.4 : 1996 | PRESSURIZED ENCLOSURES |
| ISA 12.13.01 : 2003 | PERFORMANCE REQUIREMENTS FOR COMBUSTIBLE GAS DETECTORS |
| NFPA 70 : 2017 | NATIONAL ELECTRICAL CODE |
| NFPA 499 : 2017 | CLASSIFICATION OF COMBUSTIBLE DUSTS AND OF HAZARDOUS (CLASSIFIED) LOCATIONS FOR ELECTRICAL INSTALLATIONS IN CHEMICAL PROCESS AREAS |
| NFPA 30 : 2018 | FLAMMABLE AND COMBUSTIBLE LIQUIDS CODE |
| ASTM E 659 : 2015 : REDLINE | Standard Test Method for Autoignition Temperature of Chemicals |
| IEC 60079-13:2017 | Explosive atmospheres - Part 13: Equipment protection by pressurized room "p" and artificially ventilated room "v" |
| NFPA 497 : 2017 | CLASSIFICATION OF FLAMMABLE LIQUIDS, GASES, OR VAPORS AND OF HAZARDOUS (CLASSIFIED) LOCATIONS FOR ELECTRICAL INSTALLATIONS IN CHEMICAL PROCESS AREAS |
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