BS 7339:1990

Committees responsible
Foreword
Code of practice
1. Scope
2. Definitions
3. Application and classification of pressurized
    systems subject to pmi
4. Regulation of pressurized systems subject to pmi
5. Pressurized systems not subject to pmi
6. Material checks
7. Records
Appendices
A. Common techniques used for checking materials
B. Chemical analysis
C. In situ spectrographic analysis
D. Eddy current
E. Thermo-electric
F. X-ray fluorescence
G. Carbon determination by combustion technique
H. Magnetic

The techniques and methods supplement traditional methods of material identification like hard stamping. They are intended to increase confidence level in materials actually meeting specification.

This British Standard provides guidance on the supplementary checking of metallic materials used in operational plant and in the manufacture of pressurized systems including components such as piping, pressure vessels, valves, pumps, fired heaters, boilers and associated weld deposits, etc. It is valid for checking either on site or at earlier stages, e.g. at the pressure component manufacturers, stockists or fabricators. These additional checks are intended to increase the level of confidence established by traditional methods of material identification and recording.

This British Standard is not intended to be applied in the material manufacturer’s works.

NOTE The titles of the publications referred to in this standard are listed on the inside back cover.