Koomey unit

An accumulator or Koomey unit is a unit used to hydraulically operate Rams BOP, Annular BOP, HCR and some hydraulic equipment.
There are several of high pressure cylinders that store gas (in bladders) and hydraulic fluid or water under pressure for hydraulic activated systems. The primary purpose of this unit is to supply hydraulic power to the BOP stack in order to close/open BOP stack for both normal operational and emergency situation. Stored hydraulic in the system can provide hydraulic power to close BOP’s in well control operation, therefore, kick volume will be minimized. The accumulator should have sufficient volume to close/open all preventers and accumulator pressure must be maintained all time. According to API RP53, the reservoir tank should have a total volume at least 2 times of usable volume to close all BOP equipment.

There are 4 main components of the Koomey unit as follows:
–Accumulators
–Pumping system (electric and pneumatic pumps)
–Manifold system
–Reservoir tank