Pump installation regulations

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Article 1: This section applies to the installation of the pumps listed in the various chapters. Article 2: This section contains the specialized technical provisions for pump installation projects. The general technical requirements for installation projects shall be in accordance with the provisions set out in Volume 1 of these specifications, namely the \"General Provisions\". Article 3: Pumps that are not covered in this section and have special requirements shall be handled in accordance with the provisions of the equipment’s technical documents. Article 4 The following inspections shall be carried out before the pump is installed ； 1. The basic dimensions, positions, and elevations shall meet the design requirements ； II. The equipment shall have no missing parts, damage, or rust; the pipe ends shall be properly protected with covers ； III. The turning gear should operate smoothly, without any obstruction or jamming, and without abnormal noises. Article 5: Parts that have been assembled and fully tested at the time of leaving the factory should not be disassembled arbitrarily. If disassembly is indeed necessary, it should be carried out after consultation with the relevant departments; disassembly and reinstallation must be performed in accordance with the provisions of the equipment’s technical documentation. Article 6: The leveling of pumps shall meet the following requirements: 1. The longitudinal and transverse levelness of horizontal and vertical pumps shall not exceed 0.1/1000 ； During measurement, the processed state should be used as the reference ； II. Small pumps installed as a single unit should not have any significant skew. Article 7: The alignment of the pump shall meet the following requirements: 1. When the driving shaft and the driven shaft are connected by a coupling, the misalignment between the two shafts as well as the gap between the end faces of the two coupling halves shall comply with the specifications stated in the equipment’s technical documents ； If not specified in the equipment’s technical documents, it shall comply with the provisions in Book 1 of these specifications, \"General Provisions\" ； II. The driving shaft and the driven shaft are connected by a belt; the degree of non-parallelism between the two shafts and the offset between the two pulleys shall comply with the provisions specified in Volume 1 of these specifications, namely the \"Ventilation Regulations\" ； III. Before connecting the prime mover to the pump (or transmission), the steering of the prime mover should be tested separately first; once it is confirmed to be working properly, then the connection can be made ； IV. After aligning and connecting the driving shaft and the driven shaft, turn the machine to check whether it operates smoothly ； V. After the pump is connected to the pipeline, its alignment should be checked again; if there are issues due to the connection to the pipeline, the pipeline should be adjusted. Article 8: The installation of pipelines shall meet the following requirements: 1. The interior of the pipes and their ends must be cleaned thoroughly, with any debris removed ； The sealing surfaces and threads must not be damaged ； II. The end faces of the interconnected flanges or the axes of the threaded connections should be parallel and aligned; forced connection using flange bolts or pipe fittings is not allowed ； III. After the pipeline is connected to the pump, no welding or gas cutting should be carried out on it. If welding or gas cutting is necessary, the pipeline must be removed or appropriate measures taken to prevent weld slag from entering the pump and damaging its components ； IV. The layout of the pipelines should be rechecked in accordance with the reference materials. Article 9 Before starting the pump for trial operation, the following checks shall be carried out: 1. The rotation direction of the prime mover shall meet the requirements of the pump’s rotation direction ； II. All fastened connections must not be loose ； III. The specifications, quality, and quantity of the lubricating grease shall comply with the requirements specified in the equipment’s technical documents; areas that require pre-lubrication shall be pre-lubricated in accordance with the provisions of those technical documents. IV. The pipelines of auxiliary systems such as lubrication, water sealing, shaft sealing, seal flushing, cooling, heating, hydraulics, and pneumatics should be thoroughly flushed to maintain smooth flow ； V. Safety and protection devices shall be sensitive and reliable. VI. The cranking should be smooth and normal ； VII. Before starting the pump, the inlet and outlet valves of the pump should be in the following open positions: Inlet valve: fully open ； Export valve closed, centrifugal pump fully closed, all other pumps fully open (when the mixed-flow pump is used for vacuum priming, the export valve is fully closed). Article 10: The trial operation of the pump shall be carried out after the trial operation of each separate auxiliary system has been completed successfully. Article 11: The starting and stopping of the pump shall be carried out in accordance with the provisions of the equipment’s technical documents. Article 12: The pump shall operate continuously at the design load for not less than 2 hours, and shall meet the following requirements: 1. The auxiliary systems shall function properly, and the pressure, flow rate, temperature, and other parameters shall comply with the specifications stated in the equipment’s technical documents ； II. There should be no abnormal noises during operation ； III. All static sealing areas must not leak ； IV. All fastened connections must not be loose ； V. The temperature of rolling bearings should not exceed 75℃ ； The temperature of the sliding bearing should be above 70℃ ； The temperature of special bearings shall comply with the provisions in the equipment’s technical documents ； VI. The temperature rise of the packing should be normal; under normal circumstances, ordinary soft packing should allow for a slight amount of leakage (no more than 10–20 drops per minute) ； The leakage rate of a mechanical seal should not exceed 10 milliliters per hour (about 3 drops per minute) ； VII. The power of the prime mover or the current of the motor shall not exceed the rated values ； VIII. The safety and protection devices of the pump should be sensitive and reliable ； IX. Vibration shall comply with the provisions of the equipment’s technical documents ； If vibration measurement is required but not specified in the equipment’s technical documents, the provisions in Table V-3.1 may be referred to ； Radial vibration amplitude of the pump (bidirectional) Table 3.1 Speed Amplitude shall not exceed (rev/min) (mm) ≤375 0.18 >375～600 0.15 >600～750 0.12 >750～1000 0.10 >1000～1500 0.08 >1500～3000 0.06 >3000～6000 0.04 >6000～12000 0.03 >12000 0.04 Note: Vibration should be measured using a handheld vibrator on the outer surface of the bearing housing or casing. X. Other special requirements shall be in accordance with the provisions of the equipment technical documents. Article 13: After the trial operation is completed, the following tasks shall be carried out: 1. Close the inlet and outlet valves of the pump as well as the valves of the auxiliary systems ； II. For pumps used to transport media that are prone to crystallization, solidification, or precipitation, it is necessary to rinse the pump and pipelines with clean water or another suitable medium promptly after stopping the pump, in order to prevent blockages ； III. Drain the liquid accumulated in the pump to prevent rust and freezing cracks ； IV. If the pump is to be left unused for an extended period of time, necessary measures should be taken to prevent the equipment from becoming contaminated, corroded, or damaged. Source: Internet. This post was last edited by jilinzhengda on 2009-4-7 21:36.]