Before you begin to adjust, repair, or do inspections on a crane, the following precautions must be observed and implemented as applicable:

1. The crane to he repaired must be positioned in a location where it will cause the least interference with other cranes or ships operations.

2. The boom must be placed in the stowed position when work on the topping system is to be accomplished.

3. All controls must he placed in the OFF position.

4. The power supplies must be de-energized and the power supply breaker (in the OFF position) must be tagged DANGER, except as required for testing or adjustments.

5. Maintenance may be performed on energized electrical equipment only when specifically authorized by the commanding officer.

6. After completion of adjustments or repairs, the crane should not be restored to service until all guards have been reinstalled; safety devices are reactivated; maintenance equipment is removed; and all required testing is completed.

Figure 8-9.Powered belt conveyor.

7. Maintenance on cranes should be performed only by formally qualified personnel, unless authorized by an authorizing officer on a single case basis for unusual repairs.

You must do all the maintenance requirements according to the instructions provided on the applicable MRCs. If the MRCs do not exist for a particular piece of equipment, your supervisor or you should institute interim maintenance according to the manufacturers recommendations.

The following maintenance items should be included in the crane PMS package:

l Lubrication

l Safety inspection

l Lube oil maintenance

l Wire rope

l Brakes

l Instrumentation

l Electrical

For more general information on crane maintenance, repairs, and inspections, read NSTM, Chapter 589, Cranes. Your ship should have a copy of the manufacturers technical manual for in-depth individualized information of your ships crane.