Intro / summary
ALATAS was contracted to provide engineering & an onsite team for in-situ heel pin replacement
Background
The rig maintenance team discovered unusual sounds from the heel pin & bearing. ALATAS was contacted due to the company’s extensive knowledge of offshore Liebherr cranes
Alatas’s solution
ALATAS offered a fully engineered solution & an experienced onsite team to replace the heel pin, bearing, seals, and secondary components fully in-situ. This allowed for minimal crane downtime, and the rig was able to keep working while this work was carried out.
Job scope
- ALATAS was contracted to complete a fully engineered in-situ repair plan
- ALATAS issued the repair plan and was reviewed by the client and all other parties involved.
- ALATAS issued the final turnkey proposal for the in-situ onsite work.
- ALATAS mobilized equipment from its Houston, TX repair facility
- ALATAS was informed the equipment was in-country before ALATAS mobilized its highly skilled repair team.
- ALATAS rigged the boom with chain falls and slings
- ALATAS secured the boom from sliding in any direction
- ALATAS thermal lanced the pins and jacked them out
- ALATAS lifted the boom heel section clear of the heel bearings utilizing 50t chain falls
- ALATAS removed the seized bearings
- ALATAS checked all tolerances to ensure proper fitment of all new components
- ALATAS installed the new bearings, seals, nylon, and bolts
- ALATAS lowered the boom into place and installed the new pins
- ALATAS de-rigged the crane and put it back into service
- ALATAS function tested the crane with the client and handed the crane back over.
- ALATAS demobilized the crew & equipment.
Repair Procedure
In-Situ Heel Pin Replacement gallery
