Approved Code of Practice for Cranes
Appendix A: Safe load indicators
The following table shows the type of equipment that should be fitted, as a minimum, to the machines listed. The chart also includes details of radius indicators, boom length indicators and anti-two-block devices, and so on, that should be fitted to appropriate items of plant.
Table A1: Safe load indicator use
| Crane type | Radius or angle indicator | Boom length indication | Anti-two-block warning device | Anti-two-block cutout | Automatic SlI* | Safe load indicator | load moment indicator | load moment limiter or cutout | load gauge or display | Anemometers |
|---|---|---|---|---|---|---|---|---|---|---|
| Mobile - Up to 3 tonne |
M | M | R(1) | R or | R or | R | ||||
| Mobile - 3-10 tonne | M | M | M(1) | (2) or | (2) or | (2) or | (2) or | (2) | ||
| Mobile - over 10 tonne | M | M | M(1) | M | R | |||||
| Tractor and industrial | M | M | R(1) | R | R | R | R | R | ||
| Tower | M | M | (6) | R | R | M | R | M | ||
| Self-erecting tower | M | M | M | R | R | R(8) | M(8) | R | ||
| M(8) | R(8) | |||||||||
| Gantry | Over-hoist limiter M | |||||||||
| Under-hoist limiter R | ||||||||||
| truck loader - Under 5 metre tonne | M(3) | M(3) | R(1) | R | M | |||||
| truck loader - 5-15 metre tonne | M(3) | M(3) | M(1) | R | M | |||||
| truck loader - Over 15 metre tonne | M(3) | M(3) | M(1) | M(5) | M | |||||
| Side boom pipe layers | M | |||||||||
| Other cranes | R | R | R | (4) | (4) | (4) | (4) | (4) | (7) |
Key
(1) Where the crane has a hoist winch.
(2) One of the safety features MUST be fitted.
(3) For telescopic/straight boom cranes only. This does not apply to knuckle boom cranes.
(4) One of the safety features SHOULD be fitted.
(5) For new or imported truck loader cranes over 15-metre tonnes, overload protection to stop a load moment increasing function at 100% of the crane's rated load is mandatory and shall be fitted by the manufacturer or with the manufacturer's approval.
(6) Where the load limiter or cutout cannot be provided other than with an automatic SLI, then the SLI shall be mandatory.
(7) Anemometers are mandatory on container cranes.
(8) For self-erecting tower cranes, the split column shows if one column is M the other column is R.
* SLI must have audible warning.
M Mandatory for issue of certificate of inspection.
R Recommended.Notes
- The anti-two-block device may be removed during piling operations as it is possible the device itself may be shaken loose and cause a further risk.
- Where an anti-two-block warning device or cutout are not available then two-block damage protection, if fitted, is acceptable.
- Maintenance records in accordance with manufacturer's recommendations must be produced for the issue of the certificate of inspection. This will apply one year after the next inspection following the issue of this code of practice.