- BS-IEC 61882-2001 (Hazard and operability studies) (Link)
- ISO-17776-2016 (Petroleum and natural gas) (Link)
- IEC 61882-2016 - Hazard and operability studies (HAZOP studies) (Link)
- ISO 13631-2002 (Gas reciprocating compressor) (Link)
- ISO 8699-2 1989 (Tool life testing in milling) (Link)