HSE management should therefore consider five broad phases:
* Specifications
* Design and implementation
* Installation and commissioning
* Operation and maintenance
* Changes after commissioning.
* Compliance with the standards requires four essential elements:
* Identification of safety functions required for the safe shutdown
* Assignment of a safety integrity level (SIL) for each safety function
* Use of the safety lifecycle for the engineering design and
* Verification of the SIL achieved for each safety function.
:D :D :D