Q- One of our process pumps will be taken out of service and put away for long- term storage. Any suggestions on proper storage?
A - Here are some general suggestions for long term storage. The applicability of all, or some, of these suggestions depends on several factors such as type of equipment, length of storage, and condition of the environment:
Drain the casing completely and dry it throughly, including its bearing housing and stuffing box, or seal chamber. Apply a coat of soluble rust preventive solution both internally and externally.
Cover all openings. Flanged openings (such as suction and discharge nozzles) should be covered with blind flanges with elastomer gasket. Threaded openings should be covered with steel plugs or caps.
Remove the shaft coupling; it may cause the shaft to develop a permanent sag during prolonged storage.
Wrapped the exposed shaft and key with corrosion inhibitor waterproof paper or waxed cloth.
Protect the bearing housing from moisture by placing bags of vapor phase inhibitor crystals around the housing.
Cover the equipment with industrial strength plastic, preferably transparent to allow its visual inspection, including its nameplate, without uncovering the unit.
Store the unit in its normal position in a dry place.
Inspect the unit periodically and turn the shaft a few times plus 1/4 turn. Turning the shaft prevents pitting of finished surfaces. The extra 1/4 turn is to displace the sag and prevent the shaft from developing a permanent bow.