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  • API 526 : 2017

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    FLANGED STEEL PRESSURE-RELIEF VALVES

    Available format(s):  Hardcopy, PDF

    Superseded date:  22-02-2020

    Language(s):  English

    Published date:  01-09-2017

    Publisher:  American Petroleum Institute

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    Table of Contents - (Show below) - (Hide below)

    1 Scope
    2 Normative References
    3 Terms and Definitions
    4 Responsibility
    5 Conflicting Requirements
    6 Orifice Areas and Designations
    7 Design
    8 Material
    9 Inspection and Shop Tests
    10 Identification and Preparation for Shipment
    11 Pressure-temperature Tables
    Annex A (normative) - Pressure-relief Valve Nameplate
            Nomenclature
    Annex B (normative) - Pressure-temperature Rating Charts
    Annex C (normative) - Bellows Pressure-temperature Requested
            Rating Factors
    Annex D (informative) - Valve Selection Examples
    Annex E (informative) - Valve Selection Example: Restricted Lift
    Bibliography

    Abstract - (Show below) - (Hide below)

    Acts as a purchase specification for flanged steel pressure-relief valves.

    General Product Information - (Show below) - (Hide below)

    Document Type Standard
    Product Note NEW CHILD ERR 1 2018 IS ADDED
    Publisher American Petroleum Institute
    Status Superseded
    Superseded By
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    EEMUA 208 : 2010 GUIDE TO LIFE-CYCLE MANAGEMENT OF PRESSURE RELIEF SYSTEMS
    06/30116454 DC : DRAFT MAY 2006 ISO 10438-4 - PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - LUBRICATION, SHAFT-SEALING AND CONTROL-OIL SYSTEMS AND AUXILIARIES - PART 4: SELF-ACTING GAS SEAL SUPPORT SYSTEMS
    BS ISO 18154:2017 Ships and marine technology. Safety valve for cargo tanks of LNG carriers. Design and testing requirements
    ASTM F 1508 : 1996 : R2004 Standard Specification for Angle Style, Pressure Relief Valves for Steam, Gas and Liquid Services
    API 682 : 2014 PUMPS - SHAFT SEALING SYSTEMS FOR CENTRIFUGAL AND ROTARY PUMPS
    API 674 REDLINE : 2010 POSITIVE DISPLACEMENT PUMPS - RECIPROCATING
    16/30313951 DC : 0 BS ISO 18154 - SHIPS AND MARINE TECHNOLOGY - PILOT OPERATED SAFETY VALVES FOR LOW TEMPERATURE APPLICATIONS - DESIGN REQUIREMENTS
    API 576 REDLINE : 2009 INSPECTION OF PRESSURE-RELIEVING DEVICES
    API 14E : 1991 : R2013 RECOMMENDED PRACTICE FOR DESIGN AND INSTALLATION OF OFFSHORE PRODUCTION PLATFORM PIPING SYSTEMS
    ASME B31.12 : 2014 HYDROGEN PIPING AND PIPELINES
    API 521 : 2014 PRESSURE-RELIEVING AND DEPRESSURING SYSTEMS
    ISO 13707:2000 Petroleum and natural gas industries Reciprocating compressors
    06/30116443 DC : DRAFT MAY 2006 ISO 10438-2 - PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - LUBRICATION, SHAFT-SEALING AND CONTROL-OIL SYSTEMS AND AUXILIARIES - PART 2: SPECIAL-PURPOSE OIL SYSTEMS
    API 520-1 : 2014 SIZING, SELECTION, AND INSTALLATION OF PRESSURE-RELIEVING DEVICES - PART 1: SIZING AND SELECTION
    04/30114086 DC : DRAFT JUL 2004 EN ISO 10440-1 - PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - ROTARY-TYPE POSITIVE DISPLACEMENT COMPRESSORS - PART 1: PROCESS COMPRESSORS (OIL-FREE)
    API 676 REDLINE : 2009 POSITIVE DISPLACEMENT PUMPS - ROTARY
    API 611 REDLINE : 2008 GENERAL-PURPOSE STEAM TURBINES FOR PETROLEUM, CHEMICAL, AND GAS INDUSTRY SERVICES
    ISO 18154:2017 Ships and marine technology Safety valve for cargo tanks of LNG carriers Design and testing requirements
    96/706683 DC : MAY 96 ISO 13707 RECIPROCATING COMPRESSORS FOR THE PETROLEUM AND GAS INDUSTRIES
    EEMUA 184 : 2009 GUIDE TO THE ISOLATION OF PRESSURE RELIEVING DEVICES
    09/30171555 DC : DRAFT SEP 2009 BS EN ISO 10437 - PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - STEAM TURBINES - SPECIAL-PURPOSE APPLICATIONS
    NBR 12712 : 1993 AMD 2002 DESIGN OF TRANSMISSION AND DISTRIBUTION PIPING SYSTEMS FOR FUEL GAS - PROCEDURE
    API 14E CHINESE : 2007 RECOMMENDED PRACTICE FOR DESIGN AND INSTALLATION OF OFFSHORE PRODUCTION PLATFORM PIPING SYSTEMS
    10/30227442 DC : 0 BS EN ISO 13710 - PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - RECIPROCATING POSITIVE DISPLACEMENT PUMPS
    API 680 : 1ED 87 PACKAGED RECIPROCATING PLANT AND INSTRUMENT AIR COMPRESSORS FOR GENERAL REFINERY SERVICES
    BS ISO 23251 : 2006 AMD 17355 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - PRESSURE-RELIEVING AND DEPRESSURING SYSTEMS
    10/30214867 DC : 0 BS EN ISO 21049 - PUMPS - SHAFT-SEALING SYSTEMS FOR CENTRIFUGAL AND ROTARY PUMPS
    BS 6759-3(1984) : 1984 SAFETY VALVES - SPECIFICATION FOR SAFETY VALVES FOR PROCESS FLUIDS
    API 681 : 1996 : R2010 LIQUID RING VACUUM PUMPS AND COMPRESSORS FOR PETROLEUM, CHEMICAL, AND GAS INDUSTRY SERVICES
    API 576 : 2017 INSPECTION OF PRESSURE-RELIEVING DEVICES
    EI 1560 : 2013 RECOMMENDED PRACTICE FOR THE OPERATION, INSPECTION, MAINTENANCE AND COMMISSIONING OF AVIATION FUEL HYDRANT SYSTEMS AND HYDRANT SYSTEM EXTENSIONS
    02/705659 DC : DRAFT APR 2002 ISO/DIS 21049 - PUMPS - SHAFT SEALING SYSTEMS FOR CENTRIFUGAL AND ROTARY PUMPS
    API 675 : 2012 POSITIVE DISPLACEMENT PUMPS - CONTROLLED VOLUME FOR PETROLEUM, CHEMICAL, AND GAS INDUSTRY SERVICES
    API 674 : 2010(R2016) POSITIVE DISPLACEMENT PUMPS - RECIPROCATING
    04/30127186 DC : DRAFT DEC 2004 ISO 23251 - PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - PRESSURE-RELIEVING AND DEPRESSURING SYSTEMS
    API 611 : 2008 GENERAL-PURPOSE STEAM TURBINES FOR PETROLEUM, CHEMICAL, AND GAS INDUSTRY SERVICES
    EEMUA 151 : 1987 LIQUID RING VACUUM PUMPS AND COMPRESSORS
    ASME PTB 2 : 2009 GUIDE TO LIFE CYCLE MANAGEMENT OF PRESSURE EQUIPMENT INTEGRITY
    API 611 : 2008 : R2014 GENERAL-PURPOSE STEAM TURBINES FOR PETROLEUM, CHEMICAL, AND GAS INDUSTRY SERVICES
    API 520-2 : 2015 SIZING, SELECTION, AND INSTALLATION OF PRESSURE-RELIEVING DEVICES - PART 2: INSTALLATION
    API 9100B : 1998 GUIDANCE DOCUMENT FOR MODEL EHS MANAGEMENT SYSTEM
    API 619 : 2010 ROTARY-TYPE POSITIVE DISPLACEMENT COMPRESSORS FOR PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES
    API 619 REDLINE : 2010 ROTARY-TYPE POSITIVE DISPLACEMENT COMPRESSORS FOR PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES
    API 576 CHINESE : 2009 INSPECTION OF PRESSURE-RELIEVING DEVICES
    API 676 CHINESE : 2009 POSITIVE DISPLACEMENT PUMPS - ROTARY
    API 682 CHINESE : 2014 PUMPS - SHAFT SEALING SYSTEMS FOR CENTRIFUGAL AND ROTARY PUMPS
    API STD 676 : 2009 POSITIVE DISPLACEMENT PUMPS - ROTARY
    API 674 : 2010 : INC : ERR 1 : 2015 : R2016 POSITIVE DISPLACEMENT PUMPS - RECIPROCATING
    API 674 : 2010 : ERR 2 : 2015 POSITIVE DISPLACEMENT PUMPS - RECIPROCATING
    API 681 : 1996 LIQUID RING VACUUM PUMPS AND COMPRESSORS FOR PETROLEUM, CHEMICAL, AND GAS INDUSTRY SERVICES
    API 676 : 2009 : R2015 POSITIVE DISPLACEMENT PUMPS - ROTARY
    API RP 14E : 1991 RECOMMENDED PRACTICE FOR DESIGN AND INSTALLATION OF OFFSHORE PRODUCTION PLATFORM PIPING SYSTEMS
    API 674 : 2010 POSITIVE DISPLACEMENT PUMPS - RECIPROCATING
    API 674 : 2010 : ERR 1 : 2014 POSITIVE DISPLACEMENT PUMPS - RECIPROCATING
    ASME B31.3 SPANISH : 2010 PROCESS PIPING
    PIP PNE00002 : 2013 PIPING MATERIAL SPECIFICATION SELECTION, DEVELOPMENT, AND APPLICATION GUIDELINES
    PREN ISO 23251 : DRAFT 2011 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - PRESSURE-RELIEVING AND DEPRESSURING SYSTEMS
    NORSOK I 001 : 2010 FIELD INSTRUMENTATION
    ASTM F 1508 : 1996 Standard Specification for Angle Style, Pressure Relief Valves for Steam, Gas and Liquid Services
    PIP PNE00002 : 2019 PIPING MATERIAL SPECIFICATION SELECTION, DEVELOPMENT, AND APPLICATION GUIDELINES
    API GIRE CH16 : 3ED 85 PRESSURE RELIEVING DEVICES
    ASTM F 1508 : 1996 : R2016 : EDT 1 Standard Specification for Angle Style, Pressure Relief Valves for Steam, Gas, and Liquid Services
    API 612 : 2014 PETROLEUM, PETROCHEMICAL, AND NATURAL GAS INDUSTRIES - STEAM TURBINES - SPECIAL-PURPOSE APPLICATIONS
    API 614 : 2008 LUBRICATION, SHAFT-SEALING AND OIL-CONTROL SYSTEMS AND AUXILIARIES
    11/30159581 DC : 0 BS EN ISO 23251 - PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - PRESSURE-RELIEVING AND DEPRESSURING SYSTEMS
    API 614 REDLINE : 2008 LUBRICATION, SHAFT-SEALING AND OIL-CONTROL SYSTEMS AND AUXILIARIES
    ASTM F 1508 : 1996 : R2010 Standard Specification for Angle Style, Pressure Relief Valves for Steam, Gas and Liquid Services
    EN ISO 13703:2000/AC:2007 PETROLEUM AND NATURAL GAS INDUSTRIES - DESIGN AND INSTALLATION OF PIPING SYSTEMS ON OFFSHORE PRODUCTION PLATFORMS
    BS EN ISO 10438-4 : 2003 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - LUBRICATION, SHAFT-SEALING AND CONTROL-OIL SYSTEMS AND AUXILIARIES - PART 4: SELF-ACTING GAS SEAL SUPPORT SYSTEMS
    BS EN ISO 13631:2002 Petroleum and natural gas industries. Packaged reciprocating gas compressors
    ISO 21049:2004 Pumps Shaft sealing systems for centrifugal and rotary pumps
    BS EN ISO 10440-1:2001 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - ROTARY-TYPE POSITIVE-DISPLACEMENT COMPRESSORS - PART 1: PROCESS COMPRESSORS
    ISO 10438-1:2007 Petroleum, petrochemical and natural gas industries Lubrication, shaft-sealing and control-oil systems and auxiliaries Part 1: General requirements
    BS EN ISO 10437:2003 Petroleum, petrochemical and natural gas industries. Steam turbines. Special-purpose applications
    BS EN ISO 14224:2016 Petroleum, petrochemical and natural gas industries. Collection and exchange of reliability and maintenance data for equipment
    BS EN ISO 21049 : 2004 PUMPS - SHAFT SEALING SYSTEMS FOR CENTRIFUGAL AND ROTARY PUMPS
    BS EN ISO 13703 : 2001 PETROLEUM AND NATURAL GAS INDUSTRIES - DESIGN AND INSTALLATION OF PIPING SYSTEMS ON OFFSHORE PRODUCTION PLATFORMS
    ISO 10437:2003 Petroleum, petrochemical and natural gas industries Steam turbines Special-purpose applications
    ISO 23251:2006 Petroleum, petrochemical and natural gas industries Pressure-relieving and depressuring systems
    ISO 13710:2004 Petroleum, petrochemical and natural gas industries Reciprocating positive displacement pumps
    BS EN ISO 10438-1:2003 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - LUBRICATION, SHAFT-SEALING AND CONTROL-OIL SYSTEMS AND AUXILIARIES - PART 1: GENERAL REQUIREMENTS
    ISO 13703:2000 Petroleum and natural gas industries Design and installation of piping systems on offshore production platforms
    BS EN ISO 13710:2004 Petroleum, petrochemical and natural gas industries. Reciprocating positive displacement pumps
    ISO 10438-4:2007 Petroleum, petrochemical and natural gas industries Lubrication, shaft-sealing and control-oil systems and auxiliaries Part 4: Self-acting gas seal support systems
    ISO 10440-1:2007 Petroleum, petrochemical and natural gas industries Rotary-type positive-displacement compressors Part 1: Process compressors
    BS EN ISO 23251 : 2007 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - PRESSURE-RELIEVING AND DEPRESSURING SYSTEMS
    ISO 14224:2016 Petroleum, petrochemical and natural gas industries Collection and exchange of reliability and maintenance data for equipment
    ISO 13631:2002 Petroleum and natural gas industries Packaged reciprocating gas compressors
    I.S. EN ISO 23251:2007 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - PRESSURE-RELIEVING AND DEPRESSURING SYSTEMS
    EN ISO 23251:2007/A1:2008 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - PRESSURE-RELIEVING AND DEPRESSURING SYSTEMS
    API STD 612:2020 Petroleum, Petrochemical, and Natural Gas Industries - Steam Turbines - Special-purpose Applications
    I.S. EN ISO 10440-1:2007 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - ROTARY TYPE POSITIVE-DISPLACEMENT COMPRESSORS - PART 1: PROCESS COMPRESSORS
    I.S. EN ISO 14224:2016 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - COLLECTION AND EXCHANGE OF RELIABILITY AND MAINTENANCE DATA FOR EQUIPMENT (ISO 14224:2016)
    UNI EN ISO 23251 : 2008 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - PRESSURE-RELIEVING AND DEPRESSURING SYSTEMS
    I.S. EN ISO 10438-4:2007 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - LUBRICATION, SHAFT-SEALING AND CONTROL-OIL SYSTEMS AND AUXILIARIES - PART 4: SELF-ACTING GAS SEAL SUPPORT SYSTEMS
    I.S. EN ISO 10438-1:2007 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - LUBRICATION, SHAFT-SEALING AND CONTROL-OIL SYSTEMS AND AUXILIARIES - PART 1: GENERAL REQUIREMENTS
    EN ISO 10438-4:2007 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - LUBRICATION, SHAFT-SEALING AND CONTROL-OIL SYSTEMS AND AUXILIARIES - PART 4: SELF-ACTING GAS SEAL SUPPORT SYSTEMS
    EN ISO 10437 : 2003 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - STEAM TURBINES - SPECIAL-PURPOSE APPLICATIONS (ISO 10437:2003)
    EN ISO 10438-1:2007 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - LUBRICATION, SHAFT-SEALING AND CONTROL-OIL SYSTEMS AND AUXILIARIES - PART 1: GENERAL REQUIREMENTS
    EN ISO 13631 : 2002 PETROLEUM AND NATURAL GAS INDUSTRIES - PACKAGED RECIPROCATING GAS COMPRESSORS
    EN ISO 21049:2004 PUMPS - SHAFT SEALING SYSTEMS FOR CENTRIFUGAL AND ROTARY PUMPS
    UNI EN ISO 10438-4 : 2009 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - LUBRICATION, SHAFT- SEALING AND CONTROL-OIL SYSTEMS AND AUXILIARIES - PART 4: SELF-ACTING GAS SEAL SUPPORT SYSTEMS
    EN ISO 10440-1 : 2007 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - ROTARY-TYPE POSITIVE-DISPLACEMENT COMPRESSORS - PART 1: PROCESS COMPRESSORS
    EN ISO 13710 : 2004 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - RECIPROCATING POSITIVE DISPLACEMENT PUMPS

    Standards Referencing This Book - (Show below) - (Hide below)

    ISO 17945:2015 Petroleum, petrochemical and natural gas industries Metallic materials resistant to sulfide stress cracking in corrosive petroleum refining environments
    ASME B16.34 : 2017 VALVES - FLANGED, THREADED, AND WELDING END
    ANSI/NACE MR 01 03/ISO 17495-1:2016 PETROLEUM, PETROCHEMICAL AND NATURAL GAS INDUSTRIES - METALLIC MATERIALS RESISTANT TO SULFIDE STRESS CRACKING IN CORROSIVE PETROLEUM REFINING ENVIRONMENTS
    ASME PV CODE 8 DIV 1 : 2017 BOILER AND PRESSURE VESSEL CODE - RULES FOR CONSTRUCTION OF PRESSURE VESSELS DIVISION 1
    ASME PV CODE 8 DIV 2 : 2017 BOILER AND PRESSURE VESSEL CODE - RULES FOR CONSTRUCTION OF PRESSURE VESSELS DIVISION 2- ALTERNATIVE RULES
    ASME B16.5 : 2017 PIPE FLANGES AND FLANGED FITTINGS: NPS 1/2 THROUGH NPS 24 METRIC/INCH STANDARD
    API 527 : 2014 SEAT TIGHTNESS OF PRESSURE RELIEF VALVES
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