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ALATAS Singapore Refurbishes 240T Liebherr Offshore Crane on board Armada Hawk

 

The client had purchased this offshore support vessel recently. It's build in 1978, and the cranes on board, 1x Liebherr Offshore Crane BOS 240/5000 and 1x deck crane B10/24-26 SH, being of equal old age required maintenance and upgrades.

ALATAS was called in for a crane inspection and crane condition assessment. ALATAS own, factory trained Liebherr specialist engineers attended and draw up a workscope to recondition the crane, which included the compete wire change-out, hydraulic repairs, installation & calibration of a new Safe Load Indicator, replacement of all wire ropes and other repairs. 

Under ALATAS project management and onsite supervision, following work was carried out on the cranes:

Supply and replacement of wire ropes:
ALATAS supplied and installed original Liebherr specified Teufelberger wire ropes, type TK6SQ and QS816V, a total of 3,069 meter of ropes were changed out

Supply, installation & calibration of Wylie W630v3 Rated Capacity Indicator:
The Wylie W630v3 system with optional data logger capabilities was installed as a Load Moment Limiter (LML). The total turn-over moment is being measured via a single load cell in the luffing wire ropes, which keeps the installation simple and cost effective, whilst protecting the crane reliably from overload.

Overhaul of the hydraulic system:
A number of worn down and obsolete hydraulic units (Hydromatik A2V HW/EL pumps, A2F225 motors) had to be changed out from ALATAS Stock.

Overhaul of the electric system:
ALTAS engineers are intimately familiar with the old Liebherr TTL based analogue control system. The electronic card rack was refurbished and re-wired. PCB card where function checked and correctly adjusted.
Desolate switch cabinets were rewired and defunct switch gear, contactors & relays changed-out

Diesel Engines:
The main mover is a pair of Mercedes Benz OM404 Diesel Engines. The engines were overhauled at an outside contractor and ALATAS designed and installed a new Engine Speed Control system.

Load testing:
ALATAS supplied water bag test loads and tested the cranes to 110% of capacity, proof load supplied was 264 ton

Naturally, ALATAS will continue to provide field service, spare parts supply and technical back up for these cranes and assist our customer around the clock, 24/7

 

Vessel
Check engine starter
Hydraulic pump A2V225 HW-EL
Hydraulic aggregate adjustments
       
Hydraulic aggregate
Liebherr BOS240-500 & B10-24-26SH
Preparation for wire rope installation
Wire rope reeving
       
Winch drum
Luffing wire rope installation
Newly installed hoisting ropes
Hoist wire rope installation
       
       
Luffing gear adjustments
Main hoist, auxiliary hoist and whip hoist
Main block reeving
240 ton Crane after overhaul
       
Adjustments on hoist winch drive
Adjustments on winch motors
Card Rack of crane control system
PCB cards of crane control system
       
Refurbishing electric cabinets
TTL crane control system, PCB adjustments
Wylie 650v3 display
Overload test (S.W.L-240T) in progress
       
Overload test (S.W.L-240T) in progress
Overload test (S.W.L-240T) in progress
Overload test (S.W.L-240T) in progress
Vessel in operation
       
 
Vessel in operation
Vessel in operation
Vessel in operation
 

 

 

 
 
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