BS 3156-11.5(1996) : 96 AMD 14164

Committees responsible
National foreword
Introduction
Method
1 Scope
2 Normative references
3 Principle
4 Suitability of analytical systems
5 Test gases
6 Test procedures
7 Evaluation of results
Annexes
A (informative) Example of application using
chromatography
B (informative) Statistical tests and methods
C (informative) Bibliography
Tables
A.1 Test gas compositions
A.2 Area counts from one calibration interval
B.1 Grubbs' test for a single outlier
B.2 Grubbs' test for multiple outliers, all high or
      all low
B.3 Grubbs' test for two outliers, on high, one low
B.4 Cochran's maximum variance test
Figures
1 Uniform repeatability
2 Variable repeatability
3 Response curve/straight lines
A.1 Typical chromatogram
A.2 First, second and third-order fits

Gives a procedure to determine whether an analytical system for natural gas is satisfactory, assuming that a) the analytical and calibration methods are fully described; b) the analytical needs have been clearly defined, for the range and uncertainty of component concentration measurements, and the uncertainty of properties which may be calculated from these measurements; c) the procedure's intent to be applicable to gases with compositions which vary over ranges normally found in transmission and distribution networks.