SCPD Bypass L3 Revision

Safety Critical Protection Device (SCPD) is the ... (IPS) and/or Safety Device that provides barrier to prevent or limit the effects of a hazard release.

• Instrumented Process Safety

• Isolated Protective System

• Instrumented Protective System

• Insulated Protective System

Answer explanation

Instrumented Protective System is the device or safeguarding that provides protection, detection or mitigation when hazard release. This covers pneumatic, hydraulic and electrical instrument.

What is the duration of bypass for Level 3 Validity in bypassing SCPD?

• Less than 24 hours

• Less than 7 days

• More than 7 days but less than 21 days

• More than 21 days but less than 12 weeks

Answer explanation

What is the validation frequency of Level 2 Validity for Bypassing of SCPD?

• Daily

• Weekly

• Bi-weekly

• Monthly

Answer explanation

For P1/P2 jobs, which of the following is not the responsibility of Production Technical Advisor (TA)?

• Revalidate SCPD Bypass Certificate, even during Silent Hours

• Fill up & Obtain Approval for SCPD Bypass Certificate

• Scribe & Obtain Approval for Risk Assessment

• Coordinate Risk Assessment

Answer explanation

Which of the following is not a role of a B-TA, with regards to SCPD Bypass Risk Assessment LOA?

• Endorser for Low Risk Rating

• Endorser for Medium Risk Rating

• Reviewer for High Risk Rating

• Approver for Low Risk Rating

Answer explanation

PTW is not required for the bypassing work of SCPD (PTW #1) if they are using the following methods, EXCEPT

• Low Risk Rating based on Risk Assessment

• Operation/Maintenance Override Switches (OOS/MOS)

• Software Override

• Mechanical Override Device (e.g. isolation valve)

Answer explanation

TRUE or FALSE

Risk Assessment (RA) shall be revisited for escalation of bypass duration to Level 2 and Level 3 OR if any changes to site condition that may head to changes to source of hazards.

• True

• False

Fill in the blanks.

In the event of emergencies, the bypass may be executed with the verbal approval of the appropriate AA. ... shall immediately notify the AA by any means of communication prior to bypassing activity.

• Shift Panelman

• Shift CoC

• Area Production Executive

• Production Technical Advisor

Answer explanation

True or False

Production Technical Advisor (TA) is authorized to endorse and approve permission for bypass SCPD activity (sign on behalf) upon agreement with endorser and approver, during Silent Hours and Absence of Endorser/Approver.

• True

• False

Answer explanation

Only Shift CoC is authorized to endorse and approve permission for bypass SCPD activity (sign on behalf) upon agreement with endorser and approver.

Which of the following is NOT TRUE about bypassing of SCPD during Tank Shutdown (< 12 weeks)?

• Bypassing of SCPD Certificate revalidation is not required once the storage tank is gas freed until the tankage is back in service.

• If the tank shutdown takes longer than 12 weeks, team to proceed to application of Temporary Management of Change (TEMOC).

• Shift CoC shall produce SCPD revalidation waiver memo and approved by MD/CEO to declare related bypassing of SCPD cert waived from revalidation.

• SCPD Bypass certificate and Risk Assessment shall be kept at respective area MCB until completion of work for normalization.

Answer explanation

It's not Shift CoC - it's Area Production Executive