scope:

It is the purpose of this document to establish the requirements for testing and evaluating the pressure containing performance of valves when exposed to fire. The performance requirements of this document are intended to establish standard limits of acceptability regardless of size or pressure rating.

This document establishes acceptable levels for leakage through the test valve and also external leakage after exposure to a fire for either a 15 minute. or a all minute. time period. This allows the user to select a valve best suited for a particular service.

A maximum 30 minute test duration has been established on the basis that this represents the maximum time during which a fire should normally be extinguished. Fires of greater duration are considered to be of major magnitude with consequences greater than those anticipated in this test.