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cgsibson  
#1 Posted : 26 September 2017 14:02:00(UTC)
Rank: New forum user
cgsibson

Hi All,

I am new to the IOSH community and I am also new to using online forums. I have done the "google bashing" uncovering some fairly complex documents. I am hoping someone will have an understanding of the requirements on here and be able to help out

 

I need to install a procedure for the identification of Safety Critical Equipment (SCE) and to do this i need a methodology and definition. We have a historic list of equipment that we believe is SCE and maintenance logs for this list, the finding of the inspection is we had no procedure to identify what was SCE and therefore couldn't establish if we had captured all the equipment necessary. 

I have the definition but now need a way to identify what constitutes SCE. Historically i worked to a "capture all mentality" without the constraints of COMAH and a large site but, now need to ensure resource is appropriately allocated. I was considering the identification process as an output of the LOPA and HAZID studies. Is there an "industry standard" approach to be used?

Thanks

Ian Bell2  
#2 Posted : 26 September 2017 15:31:00(UTC)
Rank: Super forum user
Ian Bell2

NORSOK standard

http://www.standard.no/pagefiles/961/z-008.pdf

Also uses FMECA technique and Reliability Block modelling.

Ian Bell2  
#3 Posted : 26 September 2017 15:34:53(UTC)
Rank: Super forum user
Ian Bell2

LAtest version

http://www.standard.no/en/sectors/energi-og-klima/petroleum/norsok-standard-categories/z-regularity--criticality/z-0082/

No longer free.

cgsibson  
#4 Posted : 26 September 2017 17:17:10(UTC)
Rank: New forum user
cgsibson

Thanks both

Wow thats some heavy reading.... i am assuming its applicable to onshore applications too.

Is there any way to translate this into a more simplistic model

Ian Bell2  
#5 Posted : 26 September 2017 18:14:23(UTC)
Rank: Super forum user
Ian Bell2

The scope to the standard says it can be used for onshore sites.

I guess you could simplify, to suit your requirements, but arguably wouldn't be following the standard. As its Norwegian, probably not too important - but you do need to pick up the main points & method of working or find a similar alternative.

Hsquared14  
#6 Posted : 27 September 2017 08:04:14(UTC)
Rank: Super forum user
Hsquared14

When I was doing this years ago in a paint plant we used a combination of HAZOP and FMEA

imwaldra  
#7 Posted : 27 September 2017 23:34:50(UTC)
Rank: Super forum user
imwaldra

Your safety case is also an important resource. I would expect it idetnifies your safety critical elements (SCEs), and those sub-elements that have associated performance standards that are required to ensure the SCEs perform as intended. So they form the basic list of your safety critical equipment.

Note that you will also probably have some health-critical (e.g. LEV) and environment-critical (e.g. vents, separators) equipment, which should also be covered in your safety case.

cheifinspector  
#8 Posted : 28 September 2017 13:03:00(UTC)
Rank: Forum user
cheifinspector

The identification of SCE's should be carried out in conjuction with your technical department as this delves into their area of competence. Also bear in mind that SCE's are now SECE's in that environmental aspects are now included (think release of hydrocarbons when well control fails).

Most SCE's will already control the environmental element but these need to be defined in the safety case and subsequent verification scheme.

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