Who keeps primary key to safety padlocks securing an HV isolation point under a Permit to Work?
Direct Answer
Option D: The High Voltage Authorised Person (HVAP) / Person in Charge of work
The High Voltage Authorised Person (HVAP) must retain the primary key to safety padlocks to ensure absolute control over the isolation point. This prevents unauthorized re-energization of equipment while personnel are working, which is a cornerstone of the Permit to Work system and essential for preventing fatal electrical accidents.
All Options
Detailed Explanation & Context
The High Voltage Authorised Person (HVAP) must retain the primary key to safety padlocks to ensure absolute control over the isolation point. This prevents unauthorized re-energization of equipment while personnel are working, which is a cornerstone of the Permit to Work system and essential for preventing fatal electrical accidents.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • High Voltage Safety Officer & Switchgear Operations (HV).
Practice Full HV Set 2
Test yourself with 30 interactive questions, live timer, and instant score.