Licenced to Jeremy Goddard. Single user licence only.
IMPORTANT: This file is subject to a licence agreement issued by the Energy Institute, London, UK. All rights reserved. It may only be used in accordance with the licence terms and conditions. It must not be forwarded to,
or stored or accessed by, any unauthorised user. Enquiries e pubs@energyinst.org.uk t +44 (0)207 467 GUIDELINES FOR THE MANAGEMENT OF SAFETY CRITICAL ELEMENTS
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Step 1: Identify the major accident events on theinstallationThis is carried out using a series of hazard
identification techniques, involving both qualitative and quantitative methods. The results from this process are generally recorded in a Hazard Register which documents all of the potential major accident event scenarios on an installation, and should be documented in the safety case for the installation.
Step 2: Identification of structures and plant whichcan cause, contribute to, prevent or helprecover from a major accidentDuty holders will generally utilise
lists of plant and equipment, extracted from their computerised maintenance management systems, as the starting point for assessing which of the items on the list are safety critical. The issue of 'how deep to dig' is one that requires to be addressed before the identification process can begin. Approaches vary, but SCEs need to be defined at an appropriate level such that they
have a direct linkage to MAHs, and it is also clear whether or not an equipment item forms part of one or more SCEs.
A team approach to SCE selection is usual as it is unlikely that a single person would have sufficient technical appreciation of the major accident analyses and detailed knowledge of the installation. Starting from the complete list of equipment the team should assess each item in turn and form a view as to whether it could cause, contribute to,
prevent or help recover from, a major accident. The outcome of these deliberations should be recorded giving the reasons why an item has, or has not been identified as safety critical and with reference to the relevant major accident hazard.
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