Client: Babcock Marine
Location: Devonport Dockyard, Plymouth
Project: Refurbishment of Crane 399
Background
Denholm Industrial Services secured a contract to refurbish Crane 399 located at 5 Basin in the Devonport Royal Dockyard, Plymouth. The crane, which was built 35 years ago, stands 185 feet high and can carry 70 tonnes at a 20 metre radius. It was originally bought as a ‘large vessel refurbishment crane’ to operate up and down 5 Basin along rail tracks. It is the only fixed crane capable of servicing the larger ships within the naval base.
The Challenge
An 18 week window was initially agreed to undertake the works, however, a survey identified substantial additional works beyond the anticipated scope. The timescale was further impacted by severe weather conditions, with high winds hindering works for approximately four weeks.
Our Solution
The scaffold required for this structure was highly technical. To ensure the crane was equally counterbalanced at all times, Denholm Industrial Services built the scaffold in a strict sequence, fully detailed in the design drawings.
Denholm Industrial Services delivered:
- Scaffolding
- Containment
- Surface preparation of the steel structure
- Painting of the crane jib and bogies
- Mechanical repairs by Relay