Case Study Overview
Diving contractor responsible for all health & safety planning and team/equipment support to perform visual and tactile bed-level survey to locate obstructions to piling operations.
Full surface supply diving equipment, Broco cutting equipment and team operating off client supplied floating plant. The dive team located debris using circular search patterns& installed lifting points to steel sheet pile debris using Broco ultra-thermic cutting equipment. Rigging was subsequently installed for lifting operations using client lifting plant.
At a glance
- Location: Great Yarmouth Outer Harbour – North and South breakwater arms
- Project Value: Award £5,500, Outturn £5,500 (NB support costs only)
- Programme Duration: 3 days including mob/demob – all work completed in 3 days.
- In-House resources Work: Supply of all diving H&S documentation for diving support works, as well as supply of containerised surface supply diving equipment, Broco cutting equipment and team
- Contract: Van Oord Purchase Order agreement
The Solution
Agreed diving support scope was successfully achieved, however the lifting capacity of the client supplied lifting plant was not sufficient to remove the piles from their embedded location. Excavation options were put to the client, however the decision was taken to move the caisson centreline by 0.5m thus out of alignment with the debris – R7M subsequently provided diving support to ensure that this was achieved thus ensuring there were no further obstructions to piling operations.
Value Added
Provision of suitable methodology to achieve the works, containerised dive system, underwater cutting equipment & suitable tested rigging to undertake the operations.
Caisson installed
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