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Position: Chinese Standard in English/GB/T 26481-2011
GB/T 26481-2011   Valve test for fugitive emissions (English Version)
Standard No.: GB/T 26481-2011 Status:superseded remind me the status change

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Language:English File Format:PDF
Word Count: 7000 words Price(USD):210.0 remind me the price change

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Implemented on:2011-10-1 Delivery: via email in 1 business day
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Standard No.: GB/T 26481-2011
English Name: Valve test for fugitive emissions
Chinese Name: 阀门的逸散性试验
Chinese Classification: J16    Valve
Professional Classification: GB    National Standard
ICS Classification: 23.060.01 23.060.01    Valves in general 23.060.01
Issued by: AQSIQ,SAC
Issued on: 2011-5-12
Implemented on: 2011-10-1
Status: superseded
Superseded by:GB/T 26481-2022
Superseded on:2023-7-1
Language: English
File Format: PDF
Word Count: 7000 words
Price(USD): 210.0
Delivery: via email in 1 business day
Valve Test for Fugitive Emissions 1 Scope This standard specifies terms and definitions, inspection, testing, marking of valves test for fugitive emissions, certification and retesting of valves, as well as leakage measurement methods for the suction method. This standard is applicable to the test procedures for the evaluation of external leakage of valve stems or shafts and body joints of isolating valves and control valves intended for application with volatile air pollutants and hazardous fluids. This standard is not applicable to end connection joints, vacuum application, effects of corrosion and radiation. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 13927 Industrial Valves — Pressure Testing (GB/T 13927-2008, ISO/DIS 5208:2007, MOD) 3 Terms and Definitions For the purposes of this document, the following terms and definitions apply. 3.1 body seals any seal in pressure containing part except stem (or shaft) seals 3.2 concentration ratio of test fluid volume to the gas mixture volume measured at the leak source of the test valve Note: The concentration is expressed in ppmv (1×10-6 parts per million volume or volume fraction), which is a dimensionless unit (1 ppmv = 1 mL/m3 = 1 cm3/m3). 3.3 fugitive emission any chemical or mixture of chemicals, in any physical form, which represents an unanticipated or spurious leak from equipment on an industrial site 3.4 leakage loss of the test fluid through the stem (or shaft) seal or body seals of a test valve under the specified test conditions and which is expressed as a concentration or a leak rate 3.5 leakage rate mass flow rate of the test fluid, expressed in mg·s-1 per meter [mg/(s·m)] of the perimeter of the stem 3.6 local leakage measurement of the test fluid leakage using a probe at the leak source point 3.7 stem seal shaft seal components installed around the valve stem (or shaft) to avoid leakage of internal fluids to atmosphere 4 Inspection 4.1 Valve manufacturer's inspection 4.1.1 The valve manufacturer shall prepare written manufacturing and inspection procedures that can meet the requirements for fugitive emission of valves. 4.1.2 The valve manufacturer shall inspect the parts, dimensions, assembly that have an impact on fugitive emission of valves according to its written procedures. 4.2 Purchaser's inspection 4.2.1 Inspection carried out by the valve manufacturer As specified in the purchaser's order contract, valves shall be inspected by the manufacturer, and the purchaser's inspector may enter the manufacturer’s factory at any time during the manufacture of the ordered valves. 4.2.2 Inspection notice
Foreword II 1 Scope 2 Normative References 3 Terms and Definitions 4 Inspection 4.1 Valve manufacturer's inspection 4.2 Purchaser's inspection 5 Tests 5.1 Preparation of test valves 5.2 Test conditions 5.3 Test procedure and evaluation of test results 6 Marking 7 Certification and retesting of valves 7.1 Certification of compliance 7.2 Retesting Annex A (Normative) Leak Measurement Using the Sniffing Method A.1 Scope A.2 Terms and definitions A.3 Principle A.4 Apparatus A.5 Test requirements A.6 Measurements of emissions Annex B (Informative) Comparison Table of Clause Numbers between This Standard and ISO 15848-2:2006 Annex C (Informative) Technical Deviations between This Standard and ISO 15848-2:2006 and Their Justifications
Referred in GB/T 26481-2011:
*GB/T 13927-2008 Industrial Valves-Pressure Testing
GB/T 26481-2011 is referred in:
*GB/T 12234-2019 Bolted bonnet steel gate valves for petroleum and natural gas industries
*T/CGMA 0407-2022 Cryogenic valves for hydrogen ― General technical specifications
Code of China
Standard
GB/T 26481-2011  Valve test for fugitive emissions (English Version)
Standard No.GB/T 26481-2011
Statussuperseded
LanguageEnglish
File FormatPDF
Word Count7000 words
Price(USD)210.0
Implemented on2011-10-1
Deliveryvia email in 1 business day
Detail of GB/T 26481-2011
Standard No.
GB/T 26481-2011
English Name
Valve test for fugitive emissions
Chinese Name
阀门的逸散性试验
Chinese Classification
J16
Professional Classification
GB
ICS Classification
Issued by
AQSIQ,SAC
Issued on
2011-5-12
Implemented on
2011-10-1
Status
superseded
Superseded by
GB/T 26481-2022
Superseded on
2023-7-1
Abolished on
Superseding
Language
English
File Format
PDF
Word Count
7000 words
Price(USD)
210.0
Keywords
GB/T 26481-2011, GB 26481-2011, GBT 26481-2011, GB/T26481-2011, GB/T 26481, GB/T26481, GB26481-2011, GB 26481, GB26481, GBT26481-2011, GBT 26481, GBT26481
Introduction of GB/T 26481-2011
Valve Test for Fugitive Emissions 1 Scope This standard specifies terms and definitions, inspection, testing, marking of valves test for fugitive emissions, certification and retesting of valves, as well as leakage measurement methods for the suction method. This standard is applicable to the test procedures for the evaluation of external leakage of valve stems or shafts and body joints of isolating valves and control valves intended for application with volatile air pollutants and hazardous fluids. This standard is not applicable to end connection joints, vacuum application, effects of corrosion and radiation. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 13927 Industrial Valves — Pressure Testing (GB/T 13927-2008, ISO/DIS 5208:2007, MOD) 3 Terms and Definitions For the purposes of this document, the following terms and definitions apply. 3.1 body seals any seal in pressure containing part except stem (or shaft) seals 3.2 concentration ratio of test fluid volume to the gas mixture volume measured at the leak source of the test valve Note: The concentration is expressed in ppmv (1×10-6 parts per million volume or volume fraction), which is a dimensionless unit (1 ppmv = 1 mL/m3 = 1 cm3/m3). 3.3 fugitive emission any chemical or mixture of chemicals, in any physical form, which represents an unanticipated or spurious leak from equipment on an industrial site 3.4 leakage loss of the test fluid through the stem (or shaft) seal or body seals of a test valve under the specified test conditions and which is expressed as a concentration or a leak rate 3.5 leakage rate mass flow rate of the test fluid, expressed in mg·s-1 per meter [mg/(s·m)] of the perimeter of the stem 3.6 local leakage measurement of the test fluid leakage using a probe at the leak source point 3.7 stem seal shaft seal components installed around the valve stem (or shaft) to avoid leakage of internal fluids to atmosphere 4 Inspection 4.1 Valve manufacturer's inspection 4.1.1 The valve manufacturer shall prepare written manufacturing and inspection procedures that can meet the requirements for fugitive emission of valves. 4.1.2 The valve manufacturer shall inspect the parts, dimensions, assembly that have an impact on fugitive emission of valves according to its written procedures. 4.2 Purchaser's inspection 4.2.1 Inspection carried out by the valve manufacturer As specified in the purchaser's order contract, valves shall be inspected by the manufacturer, and the purchaser's inspector may enter the manufacturer’s factory at any time during the manufacture of the ordered valves. 4.2.2 Inspection notice
Contents of GB/T 26481-2011
Foreword II 1 Scope 2 Normative References 3 Terms and Definitions 4 Inspection 4.1 Valve manufacturer's inspection 4.2 Purchaser's inspection 5 Tests 5.1 Preparation of test valves 5.2 Test conditions 5.3 Test procedure and evaluation of test results 6 Marking 7 Certification and retesting of valves 7.1 Certification of compliance 7.2 Retesting Annex A (Normative) Leak Measurement Using the Sniffing Method A.1 Scope A.2 Terms and definitions A.3 Principle A.4 Apparatus A.5 Test requirements A.6 Measurements of emissions Annex B (Informative) Comparison Table of Clause Numbers between This Standard and ISO 15848-2:2006 Annex C (Informative) Technical Deviations between This Standard and ISO 15848-2:2006 and Their Justifications
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Keywords:
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