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Best Practice in Electric Motor Storage

Tuesday, March 31, 2020

The sole purpose of holding electric motors on site is to reduce the response time in the event of a motor failure.

Often electric motors held on site are managed in a way that impedes response time, to a point that questions thebenefitsof a store. If your Asset Strategy recommends holding an electric motor it must be "Fit for Use" ALWAYS, easily accessible, and have the correct consumables.

The common impedients to response time are:

1.Identification of the motor specification.Nameplates take forever to identify in a breakdown situation.

2.Not having one storage location. If motor are poorly managed it promotes squirelling away of motors by tradesmen.

3.Poor storage conditions that aren't dry, underlit, no dewpoint control, subject to vibration, or poor access to regularly rotate shafts.

4.No system for managing failed motors, new deliveries, and acceptance tested motors. Motors can easily be mixed up and unfit motors returned to the store,causing disastrous consequences.

5.Lifting and Moving motors under a breakdown situation can lead to back strain, or trying to shift for identification purposes is a waste of time.

6.Not booking out a motor under breakdown event, because the CMMS is in the office and it's 2am. Motoris never reordered.

7.Unique motors with gearboxes or special shafts not having "Where Used" or "BOM" information.

8.Not having the correct consumables leads to a substandard  job that never gets reworked. Acceptance testing  including links, emf rated glands, stefa seals,gaskets, and shaft keys are the basics.

9.Limited access to tools and sealant.

10.Stores cluttered with spares from redundant assets.

Motors are the most common  asset type  and require unique storage conditions & procedures.

A well managed store ensures a fit for use spare which can be depended on.

The recommended approach togain control is a motor management programme, in which the store is a key player.The programme consists of Motor Audits, Motor Health Assessments, Asset  Strategies, rationalsation of spares, purchase & Overhaul specification, acceptance testingof motor windings,identification & movement procedures,and storage requirements

This shipping container motor store has been installed with lights, racking on wood, lifting trolley,ventilation and dew point control. Motor shafts face inwards taped for corrosion control and rotated quarterly.

Motors are sortedby speed, kW rating, and frame size for easy identification. The inspection label shows the motor has passed a winding test and fit for use.

A tradesman requiring a motor writes the details on a bookout sheet hanging inside the door. The storeman checks the log each morning.

The container is placed on wooden bearers for vibration isolation. Each electrician has a key and are responsible for following procedures.

Once implemented no one wants to return to a poor store.

Mark Gurney Gerant 3Phi Reliability Sarl

3phi-reliability.com

 

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