Common use of Pumps Clause in Contracts

Pumps. All pumps shall be designed for continuous operation unless otherwise specified. All pumps shall be installed in positions convenient for operation and servicing. Where multiple pump installations are required, each pump and its associated equipment shall be arranged in such a manner as to permit easy access for operation, maintenance, and pump removal without affecting plant operation. Lifting lugs, eye bolts, and other special tackle shall be provided to permit easy handling and removal of the pump and its components. Standard types of pumps shall be used wherever possible. Only proven products and models are to be supplied. Strainers (startup or permanent) shall be installed in the suction piping of horizontal pumps or sets of pumps. The driver shall be mounted on an extension of the pump bedplate and shall drive the pump through a flexible coupling with OSHA coupling guard. Pumping systems with variable flow requirement shall have a recirculation line for pump protection. As a minimum, pumps with motors rated for 25 hp and above shall be supplied with a recirculation line for protection. The recirculation line shall normally be routed to the source from which the system takes suction. Modulating or two-position automatic recirculation valves or restriction orifices shall be used as applicable. Pumps furnished for each application shall be sized to accept an impeller at least 1/8 inch larger in diameter than the impeller specified without having to change the pump casing. Vent and drain plugs shall be fitted, where necessary, at suitable points on the pump casing. Oil system pump vents and drains shall be provided with valves. Horizontal split-case pumps shall allow the removable half casing and impeller to be withdrawn without disturbing any of the process piping or valves. Horizontal end-suction pumps shall allow the impeller to be withdrawn from the motor end without disturbing the motor or discharge piping. Where part-load (e.g., two 50%) duplicate pumps for the same service are provided, they shall be capable of operating in parallel.

Pumps. All pumps shall be designed for continuous operation unless otherwise specified. All pumps shall be installed in positions convenient for operation and servicing. Where multiple pump installations are required, each pump and its associated equipment shall be arranged in such a manner as to permit easy access for operation, maintenance, and pump removal without affecting plant operation. Lifting lugs, eye boltseyebolts, and other special tackle shall be provided to permit easy handling and removal of the pump and its components. Standard types of pumps shall be used wherever possible. Only proven products and models are to be supplied. Strainers (startup or permanent) shall be installed in the suction piping of horizontal pumps or sets of pumps. The driver shall be mounted on an extension of the pump bedplate and shall drive the pump through a flexible coupling with OSHA coupling guard. Pumping systems with variable flow requirement shall have a recirculation line for pump protection. As a minimum, pumps with motors rated for 25 hp and above shall be supplied with a recirculation line for protection. The recirculation line shall normally be routed to the source from which the system takes suction. Modulating or two-position automatic recirculation valves or restriction orifices shall be used as applicable. For the boiler feedwater pump, a modulating automatic recirculation control valve or combined recirculation/check valve shall be used. Pumps furnished for each application shall be sized to accept an impeller at least 1/8 inch larger in diameter than the impeller specified without having to change the pump casing. Vent and drain plugs shall be fitted, where necessary, at suitable points on the pump casing. Oil system pump vents and drains shall be provided with valves. Horizontal split-case pumps shall allow the removable half casing and impeller to be withdrawn without disturbing any of the process piping or valves. Horizontal end-suction pumps shall allow the impeller to be withdrawn from the motor end without disturbing the motor or discharge piping. Where part-load (e.g., two 50%) duplicate pumps for the same service are provided, they shall be capable of operating in parallel.