🏗️ Cranes
All-Terrain Crane Inspection & Certification in Saudi Arabia
All-terrain cranes combine road mobility with off-road ability, using a multi-axle carrier, a long telescopic boom and often a lattice or swing-away jib. In Saudi Arabia they are typically used to set heavy vessels, modules and structural steel on refinery, power and petrochemical projects where capacities range from tens to several hundred tonnes. Because rated capacity depends on boom pinning, counterweight configuration and outrigger base width, independent verification that the set-up matches the load chart is especially important.
What we inspect on an all-terrain crane
- ✓Telescopic boom pinning or locking mechanism and extension cylinder, including the pin position sensors
- ✓Lattice or swing-away jib extension: pin holes, chord straightness and stowage and erection locks
- ✓Counterweight mounting, self-erecting cylinders and weight identification against the configured load chart
- ✓Variable outrigger base positions and the LMI recognition of each base width and counterweight setting
- ✓Multi-axle steering modes, hydro-pneumatic suspension lock-out and axle load distribution on outriggers
- ✓Main and auxiliary hoist winches: rope condition, brake holding tests and rope-end anchor points
- ✓Slew ring bolting and slew drive condition, plus carrier and crane engine fault codes from onboard diagnostics
- ✓Hydraulic circuit for leaks and pressure relief settings, and the wind speed indicator where fitted
Common defects we find
- ✓Boom telescoping pin that does not fully engage, or a pin sensor giving a false signal
- ✓LMI not matching the physical counterweight or outrigger configuration
- ✓Jib extension pin holes elongated or locking devices worn
- ✓Suspension lock-out failing so the carrier does not stay level or stable on outriggers
- ✓Hoist rope damage from poor spooling or sheave misalignment on long boom configurations
Risks of operating uncertified
- ✓Boom collapse or buckling if a telescopic section is not correctly pinned for the configured capacity
- ✓Tipping when the LMI is set to a configuration that differs from the actual counterweight or outrigger base
- ✓Structural failure of the jib extension from worn pin holes under a heavy tandem or tailing lift
Testing, standards & frequency
Load / performance test
Typically a rated-capacity load test at 100%-125% of rated capacity at selected boom lengths, radii and outrigger bases, depending on the standard and client, with the LMI verified for each counterweight and outrigger configuration to be used.
Inspection interval
Typically at least annually, with a pre-mobilisation inspection for each major project and additional checks before heavy or critical lifts.
Standards referenced
- ASME B30.5 Mobile and Locomotive Cranes
- EN 13000 Cranes - Mobile cranes
- OSHA 29 CFR 1926 Subpart CC (Cranes and Derricks in Construction)
- Manufacturer specifications and load charts
Part of our Crane Inspection & Certification service. You receive an inspection report, Certificate of Conformity and inspection tag for passing equipment.
Industries using this equipment
FAQs
Does an all-terrain crane need a separate load test for every counterweight configuration?＋
Not necessarily. A load test is normally performed on a representative configuration, but the LMI should be verified for each counterweight, outrigger base and boom set-up that will actually be used. The exact requirement depends on the standard and client.
Can an all-terrain crane be inspected at the project site instead of a workshop?＋
Yes. Inspection and load testing are commonly done at the owner's yard or the project site, provided there is firm level ground, calibrated test weights and room to fully extend the outriggers and boom.