Page 179 - Machinery Component Maintenance

Appendix 4-A
Detailed Checklist for Rotatina

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Equipment: Machinery Pipingg

DATE/BY
1. CHECK PUMP DISCHARGE FLANGE FOR LEVEL IN TWO
DIRECTIONS 90' APART. MAXIMUM OUT OF LEVEL
,002"/FOOT.
2. CHECK PARALLELISM OF SUCTION AND DISCHARGE
PIPE FLANGES TO PUMP FLANGES. MAXIMUM OUT
OF PARALLELISM .030" AT GASKET SURFACE.
3, CHECK CONCENTRICITY OF SUCTION AND DISCHARGE
PIPING TO PUMP FLANGES, FLANGE BOLTS TO SLIP
INTO HOLES BY HAND.
4, CHECK TO SEE IF PROPER PIPE SUPPORTS ARE
INSTALLED.
5. CHECK FOR 5 PIPE DIAMETERS OF STRAIGHT PIPE
BEFORE SUCTION AND AFTER DISCHARGE FLANGES
OF PUMP.
6. TIGHTEN PIPING FLANGE BOLTS IN CRISS-CROSS
PATTERN TO PROPER TORQUE, COAT BOLT THREADS
WITH ANTI-SEIZE COMPOUND BEFORE TIGHTENING.
7. CHECK PUMP SHAFT DEFLECTION USING FACE AND
RIM METHOD DURING FLANGE BOLT TIGHTENING.
MAXIMUM ALLOWED DEFLECTION IS .002" TIR.
NOTE: PREFERRED METHOD OF PIPING PUMP IS TO BRING
THE PIPING TO THE PUMP. AFTER PUMP IS GROUTED
AND ALIGNED, SUCTION AND DISCHARGE FLANGES
WITH GASKETS ARE 4-BOLTED TO PUMP, PIPING IS
THEN FIELD FITTED AND WELDED TO THE FLANGES.

* Source: P.C. Monroe, as originally presented at First international Pump Symposium,
and Short Course, Texas A & M University, Houston, Tx., May 21-24, 1984.

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