The Kishorn Dry Dock was constructed in the 1970s for the building of the Ninian Central Platform. The dry dock has been repaired and refurbished to bring it back into operation, with new gate seals, pumps and concrete repairs. An access road was constructed down into the dock and the sheet piled abutments have been repaired, tie rods replaced, and a cathodic protection system installed.
Client – Kishorn Port Ltd
Completion – 2018
Value – £500,000
AREAS OF RESPONSIBILITY
Wallace Stone undertook the original dive inspections to ascertain that the concrete caisson gates were still suitable for operation. They then organised and supervised a contractor to re-establish gate seals and undertake a trial pump out of the dry dock and floating of the gates. Concrete repairs including crack repairs were then specified once the dock was dry.
Refloating of dry dock – installation of dewatering pumps; new gate seals; new sluice covers; replacement of abutment tie rods
11,000t gates 84m long, 14m wide, 16.1m high; Gate sill level – 8.3m CD
Concrete repairs – crack injection and concrete repairs
Cathodic Protection – sacrificial anodes fitted to all sheet piles at gate abutments.
Restoration of an existing dry dock facility for decommissioning and repair of oil rigs from the North Sea; also available for the offshore wind sector for construction of gravity base structures.
Project Manager – Wallace Stone
Main Contractor – Harris Pye/Concrete Repairs Ltd/Shearwater Marine Ltd