By Pass Pumping Considerations
One of the objectives of the bursting team (owner, engineer, contractor, etc.) is to minimize
customers service interruptions for water and gas applications and maintain continuation of
flow for sewer applications. The key for achieving this objective is the by pass pumping system.
For water applications, the system should be able to deliver the needed flow volume with the specified pressure to the customers. For gravity
applications, the system should be able to adequately pump the upstream flow and discharge it to the manhole downstream of the run being
burst. The plan should ensure that the bypass system has adequate pumping capacity to handle the flow with emergency backup pumps to
ensure no interruption to existing services. The bypass pipes and fittings should have sufficient strength to withstand the surge water
pressures. Contractual arrangements between the owner and contractor should be made regarding third party damage due to the disconnection
and reconnection of the water lines without fault of the contractor.