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5.5 Recommended Stock of Spare Parts For 2 Years of Operation

The document outlines the recommended stock of spare parts for various pump operations over a two-year period, detailing specific parts and quantities based on the number of pumps. It also identifies common faults, their causes, and suggested remedies for issues such as insufficient liquid delivery, high discharge pressure, and leakage. The information is structured to assist in maintaining pump efficiency and addressing operational challenges.

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Ajit Mokal
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54 views1 page

5.5 Recommended Stock of Spare Parts For 2 Years of Operation

The document outlines the recommended stock of spare parts for various pump operations over a two-year period, detailing specific parts and quantities based on the number of pumps. It also identifies common faults, their causes, and suggested remedies for issues such as insufficient liquid delivery, high discharge pressure, and leakage. The information is structured to assist in maintaining pump efficiency and addressing operational challenges.

Uploaded by

Ajit Mokal
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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CPK

5.5 Recommended stock of spare parts for 2 years of operation.

Part No. Designation Number of pumps (including stand by pumps)

2 3 4 5 6 8 10 and more

No. of spare parts


210 Shaft 1 1 2 2 2 3 30%
230 Impeller 1 1 2 2 2 3 30%
320 Angular contact ball bearings (set) 1 1 2 2 2 4 50%
321.01/02 Deep groov ball bearing 1 1 2 2 2 4 50%
322 Cylindrical roller bearing 1 1 2 2 3 4 30%
330 Bearing bracket - - - 1 1 1 2 per 10 nos.
433 Mechanical seal Refer works
454 Stuffing box pressure ring 1 1 2 2 2 3 30%
456 Neck ring 1 1 2 2 2 3 30%
458 Lantern ring 1 1 2 2 2 3 30%
461 Stuffing box packing (set) 2 2 3 3 3 4 40%
502 Casing wear ring 2 2 2 3 3 4 50%
503 Impeller Wear ring 2 2 2 3 3 4 50%
524 Shaft protection sleeve 2 2 2 3 3 4 50%
Gaskets (set) and O ring 4 6 8 8 9 12 150%

6. Faults
6.1 Faults, causes and suggested remedies. 6.2 Cause-Remedy1)

1. The pump delivers against an excessively high


Faults Code Number discharge pressure
Cause-remedy
- open discharge valve further until the duty point
Pump delivers insufficient 1,2,3,4,5,6,7,8,9, conditions have been attained (adjusted)
liquid 10,11,18,28
2. Excessively high back pressure
Driver is overloaded 12,13,14,15,23,27,28 - fit an over size impeller2)
Excessively high pump 15 - increase rotational speed
discharge pressure (applies to turbine or I.C. engine driven pumps)
Excessively high bearing 22,23,24,25,26 3. The pump and/or piping are incompletely vented or
temperature primed.
Leakage at the pump 29 - vent or prime the pump and system completely.

Excessively leakage at 17,18,19,20,21,22,23,33 4. Suection line or impeller clogged.


shaft seal - Remove deposits in the pump and/or piping.
The pump runs rough 3,6,11,12,22,23,30,31,32 5. Formation of air pockets in piping.
Excessive temperature 3,6,32 - Alter piping layout
rise inside the pump

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