Breaker Rack Out and Rack In Procedure Before Maintenance – Complete Safety Guide

Today we will talk about how to rack out and rack in any system before taking it under maintenance, and why this procedure is important along with its benefits.

Whenever maintenance or replacement work needs to be done on any machine, the first priority is to ensure that no one can accidentally energize the equipment from behind. For this, the breaker must be properly racked out. After racking out, a relevant Danger Tag is attached to the equipment. Along with tagging, a Lockout is applied. This lock is then secured with a key, which is attached to the work permit.

Watch This Breaker Rack Out Procedure Video – Step by Step Training

Before racking out any breaker, permission is required from the Operations Department. The Operations Department issues a work permit. Then the Area Operator ensures that the breaker in the MCC Room matches the KKS code mentioned in the permit. After verifying this, the breaker is racked out step-by-step: the selector switch is rotated to the OFF position, and once the indication changes from ON to OFF, the breaker handle is pressed and pulled to rack it out.

After the breaker is racked out, a tag is placed on it stating why it was racked out. Then a lock is applied. The lock’s key is attached with the work permit and handed over to the maintenance team. This makes sure the maintenance team can safely perform the work, fully confident that the machine will not be energized accidentally.

Once the maintenance work is completed, the work permit is returned. The breaker is then racked in, the locks and tags are removed, and the machine is taken for a test run under the supervision of the maintenance team to ensure the equipment is now operating properly.