Revamp of the exisitng Plant Paging System at MAA Gas Plant Revamp - The Emergency Plant Intercom systems connects the Central Control Room Operartors with the Field Operators. The Gas Plant at MAA connects to the Units AGRU, ERU, NLTF, and Gas Trains- 1, 2, 3, 4 ,5. PSC Team has designed, engineered, supplied, tested and commissioned the latest-generation Plant Intercom Systems to the Gas Plant at KNPC MAA Refinery.