Pumps. Well pumps used on the project shall be vertical turbine pumps operating at a maximum speed of 1800 rpm, shall have enclosed impellers, and be provided with either an oil or water lubrication system to prevent bearing wear during pump startup. Discharge heads shall be fabricated steel with a stuffing box for packing. Booster pumps may be vertical turbine pumps, split case pumps or end suction pumps as appropriate for the capacity and head required. Pump stations shall be designed with a minimum of 3 pumps where practical to minimize the loss of capacity should a pump fail. A minimum of one pump at each pump station with multiple pumps shall be provided with a variable frequency drive (VFD). Where a well field exists at least one well pump shall be provided with a VFD. The VFD at each location shall be installed on the pump with the largest capacity. Maximum design discharge pressures at xxxxx and pump stations shall be at or below 250 psi. Pumps used shall be selected so at maximum design flow and head conditions they are operating at their best efficiency or at a location to the left of their best efficiency on their head capacity curve. Pumps operating at 1200 rpm are preferred and 3600 rpm pumps shall only be used in conjunction with close coupled, end suction centrifugal pumps.
Pumps. For the purpose of this Drainage Maintenance Plan, fish bearing waters shall be defined as any part of a natural watercourse, marine water body, managed watercourse with headwaters (green) and that part of a managed watercourse without headwaters (magenta) or artificial watercourse (yellow) that is within 300 feet of a functioning tidegate or floodgate confluence with a natural watercourse, marine water body or managed watercourse with headwaters (green). Surface water pumps in fish bearing waters as defined above shall be fitted with a screen or otherwise be approved by WDFW per RCW 77.55.040, 77.55.070, 77.55.310 and 77.55.320. Within five years from the effective date of the Drainage Maintenance Agreement, incorporating the provisions of this Drainage Maintenance Plan, each pump facility in fish bearing waters as defined above that is owned, operated and maintained by DID #5 shall be in compliance with the pump screening provisions stipulated in the General Hydraulic Project Approval (GHPA) issued to the district specific to the Drainage Maintenance Agreement and this Drainage Maintenance Plan. In the event that the established pump screen criteria cannot be met, the Drainage Maintenance Plan shall be modified within 5 years from the effective date of the district’s Drainage Maintenance Agreement to identify a mutually acceptable alternative technology that meets or exceeds these criteria and a mutually acceptable strategy and timeline for implementation.
Pumps. Pumps shall be of the horizontal centrifugal, submersible or vertical turbine type. Pumps should be rated at or near the maximum efficiency for that pump to deliver water. Line shaft deep well turbine pumps shall be water lubricated. Petroleum based lubricated lineshaft pumps will not be permitted.
Pumps. All three phase motor drives for pumps shall be checked for proper rotation prior to being coupled to the applicable pump.
Pumps. This section covers the design, manufacture, testing, delivery, unloading, and erection of fuel oil pumps, water pumps, sump pumps and other miscellaneous pumps required for the project. The pumps shall be furnished complete with motors, couplings, guards and baseplates. Equipment, material, design, fabrication, inspection and testing shall comply with applicable industry codes, standards and specifications including, but not limited to, ASME, ANSI, AWS, NEMA, NEC, HI, and OSHA. Pumps and equipment shall be selected and designed, including heads, capacities and margins, based on the Contractor's piping arrangement, system requirements and type of fluid being handled. The materials of construction of the pumps shall be compatible with the fluid pumped. The Contractor shall be fully responsible for the applicability, quality and compatibility of these materials. The selection of the pumps shall be subject to Owner's approval. Similar parts of duplicate pumps shall be completely interchangeable. Equipment and piping arrangement, and nozzle orientation, shall be selected for ease of maintenance and to minimize the dismantling or removal of piping and electrical connections for maintenance. Shafts shall be accurately ground and polished throughout their entire lengths and furnished with shaft sleeves. They shall be designed so that the critical speed will not occur within a safe margin of operating speed of the pump. Casings and nozzles shall be designed to withstand a minimum of 1 1/2 times the pump shutoff pressure. Wear rings for casing and impellers shall be replaceable. In general pumps shall have mechanical seals. Where packing is utilized the stuffing boxes shall be integral with pump casing and furnished with lantern rings and leakoff piping. Pumps shall be subject to shop inspection and manufacturer's standard shop tests. The pumps, motors, baseplates shall be thoroughly cleaned, primed and finish coated with manufacturer's standard procedures and paint. Aluminum, galvanized steel and stainless steel surfaces shall not be painted. Equipment shall be furnished with permanently mounted non-corroding metallic name plates.
Pumps. 1. Electric or air powered with interlocks providing positive ratio control of proportions for the two
Pumps. In general, multiple electrical motor driven pumps shall be provided for each application. Pump protection shall be incorporated by recirculation or speed control. A 1.15 service factor will be used for sizing the motor drives. Except for circulating water pumps, a minimum of a 10% pressure margin for 100% of the design flow rate shall be used to select each pump system. Freeze protection measures, such as drainage provisions or freeze protection cable, shall be incorporated in the design.
Pumps. Each of the pumps listed below will demonstrate that they can deliver the design flow rate at the design pressure for a period of 15 minutes minimum:
Pumps. (1) The potable water pump shall have the capacity to transfer potable water a minimum of twenty