UNE-EN ISO 10715:2001

Foreword
Introduction
1 Scope
2 Definitions
3 Principles of sampling
4 Safety precautions
5 Technical considerations
6 Materials used in sampling
7 General preparation of equipment
8 Sampling equipment
9 Spot sampling
10 Direct sampling
11 Incremental sampling
Annexes
A Use of a block valve in direct sampling
B Cleaning of steel sampling cylinders
C Procedure for low-pressure sampling into glass cylinders
D Procedure for sampling by the fill-and-empty method
E Procedure for sampling by the controlled-rate method
F Procedure for sampling by the evacuated-cylinder method
G Guidelines for the calculation of the residence time
H Student's t-table
J Bibliography

Gives concise guidelines for the collecting, conditioning and handling of representative samples of processed natural gas streams. Also gives guidance for sampling strategy, probe location and the handling and design of sampling equipment. Useful for custody transfer measurement systems and allocation measurement systems.