Safety Critical Element Management Manual

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Shell EP 2009.9009 SCE Management Manual
POSITION PAPER 130[shell verification]
Key terms
There is a list of acronyms/abbreviations on page However, it is important that the following terms are clearly understood prior to reading this manual.
The Hazards and Effects Management Process (HEMP -
EP ST) identifies and assesses HSE hazards,
implements control and recovery measures, and maintains a documented demonstration that major HSE risks have been reduced to a level that is as low as reasonably practicable
(ALARP) throughout the Asset life cycle.
Major Hazard (severity 5 or red risk)
Those hazards, i.e. substances, activities, operations or conditions which are assessed as having a consequence severity of 5 or risk ranking of red, as defined in the Group
‘Risk Assessment Matrix (RAM.
Safety Critical Element (SCE) (also known as ‘HSE
Critical Element’)
An item of equipment or structure whose failure could lead to the release of a Major Hazard or whose purpose is to prevent or limit the consequences of a major incident, excluding business loss. The term SCE has the same meaning as the term
HSE Critical Element, as used in the EP ST HSE
case standard and in the EP SP HSE glossary of definitions.
The SCE Management processes described in this manual only deal with hardware and equipment related software or logic systems, e.g. hydrocarbon containment systems,
primary structures, fire and gas detection and protection,
separation distances, evacuation systems, and do not include safety management systems, processes and procedures.

Safety Critical Element Management Manual
EP 2009-9009
Performance standard (PS) for Operate phase
A statement, which can be expressed in qualitative or quantitative terms, of the functional performance required of a system or item of equipment, and which is used as the basis for managing the risk from the Major Hazards.
An approved noncompliance of the mandatory requirements of a procedure, standard or specification. In this manual, this is applied to assurance and safety critical corrective and preventive work orders which will not be or have not been carried out by the due date.
Throughout this document, CMMS is used to refer to the
Computerised Maintenance Management System, which inmost Operating Units is the plant maintenance and other modules of SAP. The principles of this manual equally apply to any CMMS although some terms used may have meanings specific to SAP. Appendix 2 includes requirements specific to the use of SAP as the CMMS.

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