January 8, 2020
The Thurra team of experienced Engineer Surveyors shared their findings of the most common faults they experience with electric overhead travelling cranes. Here’s what they had to say and also what you, as users can do to help avoid life threatening accidents and costly insurance claims from arising.
5 common defects on electric overhead travelling cranes:
- Ineffective load hook safety clips – ineffective springs, or distorted safety clips. These should be identified on any pre-use check.
- Pendent control markings – not marked on the underside of the crane bridge, or different legends. Sometimes when a pendent control is changed, the maintenance company forget that the legends on the underside of the bridge are of one type and then they fit a pendent with different legends.
- Ineffective long travel brakes – long travel brakes should be checked on a pre-use check. The capacity, the loads carried and the safe use of a crane, determine the long travel brake efficiency.
- Hoist rope broken wires – Engineer Surveyors assess a hoist rope against ‘ISO4309 Cranes – wire ropes – care and maintenance, inspection & discard’. This standard highlights the number of broken wires allowed in a wire rope, plus a number of other factors to consider, when assessing the hoist rope for continued service.
- Shock loaded hoist rope – often caused by the load ‘bouncing’ whilst being transferred between locations when using the crane. This increases the rope external diameter.
If you require advice or help on any of the above, please speak to your Insurance Broker who will be happy to arrange a call from Thurra for technical advice, or a visit by an experienced engineer.