lexiara

preamble_5805

6.7.4.6.1. Every shell shall be provided with not less than two independent spring-loaded pressurerelief devices. The pressure-relief devices shall open automatically at a pressure not less than the MAWP and be fully open at pressure equal to 110 % of the MAWP. These devices shall, after discharge, close at a pressure not lower than 10 % below the pressure at which discharge starts and shall remain closed at all lower pressures. The pressure-relief devices shall be of the type that will resist dynamic forces including surge.

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Source: EUR-Lex (Cellar) · retrieved 2026-10-31 · Text as adopted (Official Journal); later amendments are not incorporated in this text.