BS ISO 15971 : 2008
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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NATURAL GAS - MEASUREMENT OF PROPERTIES - CALORIFIC VALUE AND WOBBE INDEX
Hardcopy , PDF
English
01-01-2008
31-05-2014
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
3.1 Calorific value and Wobbe index
3.2 Water content of gas
3.3 Performance classification
3.4 Terms from metrology
4 Principles of measurement
4.1 Introduction
4.2 Direct combustion calorimetry
4.3 Indirect methods
4.4 Inferential methods
5 Performance assessment and acceptance tests
5.1 Performance assessment for instrument selection
5.2 Factory and site acceptance tests
6 Sampling and installation guidelines
6.1 Sampling
6.2 Installation guidelines
7 Calibration
7.1 Calibration procedures
7.2 Calibration gases
8 Verification
8.1 Verification procedures
8.2 Verification gases
9 Maintenance
9.1 Preventive maintenance
9.2 Corrective maintenance
10 Quality control
10.1 General
10.2 Environmental parameters and ancillary equipment
10.3 Instrumental factors
Annex A (normative) - Symbols and units
Annex B (informative) - Examples of type-approval and technical
specifications
Annex C (informative) - Class 0 mass-basis calorimetry
Annex D (informative) - Direct combustion calorimetry
Annex E (informative) - Stoichiometric combustion devices
Annex F (informative) - Effect of non-alkane gases on stoichiometric
combustion devices
Annex G (informative) - Measurement of Wobbe index
Bibliography
Specifies the measurement of calorific value of natural gas and natural gas substitutes by non-separative methods, i.e. methods that do not involve the determination of the gas composition, nor calculations from it.
| Committee |
PTI/15
|
| DevelopmentNote |
Renumbered and superseded by BS EN ISO 15971. (05/2014)
|
| DocumentType |
Standard
|
| Pages |
62
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| ISO 10715:1997 | Natural gas — Sampling guidelines |
| ISO 6976:2016 | Natural gas — Calculation of calorific values, density, relative density and Wobbe indices from composition |
| ISO/IEC Guide 98:1993 | Guide to the expression of uncertainty in measurement (GUM) |
| ISO 5725-6:1994 | Accuracy (trueness and precision) of measurement methods and results — Part 6: Use in practice of accuracy values |
| IEC 61000-6-3:2006+AMD1:2010 CSV | Electromagnetic compatibility (EMC) - Part 6-3: Generic standards - Emission standard for residential, commercial and light-industrial environments |
| ISO 14532:2014 | Natural gas — Vocabulary |
| ISO 13443:1996 | Natural gas — Standard reference conditions |
| ISO 6142:2001 | Gas analysis — Preparation of calibration gas mixtures — Gravimetric method |
| ISO 14111:1997 | Natural gas — Guidelines to traceability in analysis |
| ISO 6145-1:2003 | Gas analysis — Preparation of calibration gas mixtures using dynamic volumetric methods — Part 1: Methods of calibration |
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