Case Study
Portsmouth Port - Welding Programme

Overview of Process and works completed:

UK Diveworks Commercial (UKDC) were requested to assist with the installation of a new energy efficient green heat exchange system using sea water. The intake was required to be routed down the quay wall and into the sea. A frame was required for the pipework and filters to be lowered in and out of the water while ensuring they remain protected.

UKDC were instructed to carry out the underwater welding or "wet welding" of the frame to the sheet pile wall. These operations required a full team of trained coded welders to carry out the task.

The project required some pre welding preparation works to be carried, this included the removal of a variety of redundant brackets and plates to clear the area for the frame.

Utilising burning methods the divers removed all obstructions, lowered the frame into position and marked the areas to be welded.These areas were prepped using a pneumatic powered needle gun and flap grinding disc bringing the areas back to bare metal. The frame was lowered back in, and tach welded into position, a technique used to temporally secure the structure allowing for the rigging to be removed. The frame was then completely welded into position.

This project required many hours of planning and preparation due to working within an active commercial port, and with several techniques used which are dangerous such as burning and welding.

UKDC, having ISO:45001 as well as 9001 and 14001 can cover all areas of risks by following strict procedures leading to a successful completion of the Portsmouth port welding programme.