Ruhrpumpen CPP21 - Section Five - Piping and Alignment

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Horizontal End Suction Pump for Chemical Process, ASME B73.1-2001
Installation, Operation, and Maintenance Manual – CPP21
SECTION FIVE - PIPING AND ALIGNMENT
• These units are furnished for a specific service condition. Any change in the
hydraulic system may affect the pump performance adversely.
• The connection of the piping must be carried out with utmost care; otherwise,
the pumping medium can escape during operation, which can seriously
endanger the operating personnel.
• Do not start the piping and alignment procedures until grouting, preliminary
alignment (as seen in the previous sections of this manual) and on site welding
have been performed.
• In a new installation, great care should be taken to prevent dirt, scale, welding
beads, and other items from entering the pump. The suction system should be
thoroughly flushed before installing the suction strainer and suction piping.
• Suction and discharge piping should be of ample size, be installed in direct runs
with minimum bends.
• Short radius elbows shall be avoided near the suction nozzle. If an elbow is
necessary, it should be of the long radius type.
• Suction and discharge piping configurations should be in accordance with the
Hydraulic Institute Standards.
• Suction and discharge piping, fittings, and valves must be adequately supported
and anchored close to the pump flanges to eliminate strains imposed on the
pump case, prevent excessive nozzle loads, maintain pump/driver alignment,
and avoid pipe-induced vibration.