In which scenarios is it acceptable to use a bypass during maintenance?

Using a bypass during maintenance is considered acceptable in specific scenarios where it is crucial to ensure that repairs can be conducted effectively. In the scenario where repairs are necessary and cannot be conducted with flow present, employing a bypass allows for the section of the system requiring maintenance to be isolated and drained, thereby facilitating safe and efficient work.

Bypassing ensures that maintenance can occur without interference from ongoing flow, which could complicate repairs, create hazards, or potentially lead to further damage to the system. It is vital to follow proper protocols to minimize impacts on overall system performance and to ensure that service continuity is maintained wherever possible.

Other scenarios, such as routine cleaning or dealing with minor leaks, may not justify the use of a bypass. Routine cleaning usually does not require total system flow interruption and can often be accomplished with the system still operational. Likewise, a minor leak may be addressed without needing to divert flow if it is manageable and does not pose a high risk, thus not necessitating the use of a bypass. Operating during normal hours, particularly when flow is high, also presents risks that could be mitigated by using a bypass only when absolutely necessary for more significant repairs.