British Association (B.A.) screw threads. RequirementsBS 93: 2008 British Association (B. A.) screw threads. Requirements BS 93: 2008 specifies limits of sizes, and tolerances, for single start parallel screw threads of British Association (B. A.) form. The standard specifies the British Association (B. A.) system of screw threads, which comprises 17 graded metric sizes designated by the numbers 0 to 16. Approximate inch equivalents are also given. BS 93 specifies the following: basic sizes for B. A.

BS EN 12162 specifies the hydrostatic test procedure to be applied to pressure containing parts of all types of liquid pumps including any auxiliary equipment making up a pump unit as described in the scope of EN 809:1998

processes and management activities

• A more effective and robust basis for life cycle cost analysis and benchmarking

Preparation of drawings

isolated economisers

The tests allow the performance of sample products to be compared

1 only systems operating at 25 bar or 42 bar (at 20 °C) with nitrogen propellant

1 Inspection for compliance determination

Anchorages

Annex A (informative) - KM and IC in the media

risk re-assessment

BS EN ISO 6892-1 is for designers and engineers of metallic products and components