'MV Wind' Pin Locations

M & A Engineering Ltd were asked to assist ‘Northwestern Shiprepairers’ in the repair of the pin locations for the forward Jack-Up legs on the 'MV Wind'.

The existing locations for the locking pins were found to be worn. Northwestern Shiprepairers were tasked with cutting out the existing plates and welding in new sections at each of the three locations on the forward, port & starboard legs.

M & A Engineering were asked to devise a method that ensured that after machining, the horizontal centrelines of the new pins were in the same plane, relative to each other, the Jack-Up leg centreline was perpendicular to the centreline of the pins, and the pin centrelines bisect the leg centreline. After establishing the relative position of each of the new slots, machine each slot to the design tolerance.

Worn Pin & Location

New Plate

M & A replicated the centreline of the Jack-Up leg by setting one of our modular line boring bars to zero-zero readings off the leg location bore. Each horizontal bar centreline was set to bisect the vertical centreline.

With all four bars set, a sweep arm was connected to the vertical bar. Using a dial test indicator, the high point on each bar could be gauged, which then gave the position of each line of bores, relative to each other.

From the horizontal bars, x & y co-ordinates were taken in relation to the slots. The required metal removal from each face was then calculated to ensure the slot was on the correct centreline and to design tolerance specifications.

Milling In Progress. Note The Rear Ø240mm Pin Location Bore

The work was completed on schedule, and to the complete satisfaction of the customer.

If you have a bespoke requirement, call 01646 698192 to discuss your requirement, or email us with the details.