12.9.3 Storage of erected mobile supporting structures

When not in use, the mobile supporting structure should be positioned so that it does not present a hazard to persons, goods or vehicles, etc. which may be working or stored in the area.

Where practicable, if the mobile supporting structure is not in regular use the lifting appliance should be removed for storage. If this is not possible or desirable, the lifting appliance should be parked where it will not present a hazard. This may be found to be against an end stop adjacent to one of the supports. Where appropriate, the lifting appliance should be disconnected from the power source and offered suitable protection from weather, etc.

It is advisable that, when not in use, the mobile supporting structure is parked with the jacks taking the weight off the castors to prevent accidental movement. This should be done whether the castors are fitted with brakes or not as certain types of wheels and tyres may develop flats on the treads if left supporting a weight for long periods. Mobile supporting structures which are not fitted with jacks or wheel brakes should be given special attention to ensure that they cannot be accidentally moved, e.g. by winds.