Group Lockout Device
How does WorkSafeBC define when a group lockout procedure is appropriate?
WorkSafeBC s.10.9 allows group lockout if a large number of workers are working on machinery or equipment, or a large number of energy-isolating devices must be locked out. Examples include complex process facilities or systems with numerous or widely dispersed isolation points.
What is the role of the two qualified workers in group lockout?
The two qualified workers independently lock out all energy-isolating devices, secure the keys in the group lockout device using their locks, complete and post a checklist, and at the end, after all workers remove personal locks, remove their own locks to release keys. They provide redundant verification and key control.
How is a control system isolating device (CSID) handled under a group lockout device?
CSIDs are treated as energy-isolating devices in the checklist. Locks applied to CSIDs must have their keys placed into the group lockout device alongside keys from other isolation points, ensuring all control outputs are disabled.
A group lockout device is a lockable key-securing system, such as a key box or lockout board, used in a group lockout procedure to hold the keys of locks applied to multiple energy-isolating devices. Each worker applies a personal lock to this device, ensuring no isolation keys can be removed until all workers have removed their locks, maintaining individual protection during de-energized equipment work.
On the shop floor, a group lockout device is used when multiple workers or isolation points are involved. Two qualified workers lock out all energy-isolating devices and place the keys in the device, which is then secured with their locks. Each worker adds a personal lock to the device, centralizing key control. This allows workers to maintain individual lockout responsibility without locking each isolation point. The device is typically mounted near equipment, and a written procedure with a checklist is posted. SafeDesk tracks worker locks, isolation points, and status changes for compliance.
Using group lockout without a proper written and posted procedure, leading to inconsistent lockout steps and incomplete isolation.
Treating the group lockout device as a substitute for personal lockout responsibility, where workers fail to apply personal locks, undermining individual protection.
Inadequate control over keys, such as using combination locks or allowing unauthorized access to keys, risking re-energization while workers are exposed.