Written Schemes of Examination and Legislation
The Pressure Systems and Safety Regulations (PSSR) require that written schemes of examination (WSE) must remain suitable over the lifetime of the plant, which means they should be reviewed and, when necessary, revised. RR509 ‘Plant ageing: Management of equipment containing hazardous fluids or pressure’ also recommends that inspection plans are reviewed regularly.
It is the duty holder’s responsibility under PSSR to ensure that the content of the written scheme is reviewed at appropriate intervals by a Competent Person. It is also worthwhile noting that the Regulations are concerned with risks arising from unintentional releases of stored energy and not those arising from toxic, flammable or other hazardous materials, which are covered under the Control of Major Accident Hazard (COMAH) Regulations and the Dangerous Substances and Explosive Atmospheres Regulations (DSEAR). A risk-based approach would include a provision for all consequences not necessarily limited to those under PSSR.
The legislation leaves the duty holder, in conjunction with the Competent Person, with flexibility to decide a ‘suitable’ written scheme for examination to prevent danger on the basis of the available information about the system and good engineering practice.
A risk-based approach to inspection planning is detailed in CRR363/2001 ‘Best practice for risk-based inspection as a part of plant integrity management’.
HFL Consulting can help you to develop the scope of your inspection programme, based on all the hazards and risks, to ensure maximum value is obtained from any inspection effort.