be_ixf;ym_202009 d_21; ct_50

Sheared propeller shaft manufacture and replacement in India

Rapid response and precise execution restore offshore vessel to service

A 38-year old offshore supply vessel experienced a failure of its port side propeller shaft with the shaft shearing off near the forward end bush.

The customer approached Goltens to request assistance in the supply and installation of the shaft. Goltens accepted the challenge and worked closely with the vessel’s class society, Indian Registry of Shipping (IRS), for recommended procedures and for approval for the forging and manufacture of a replacement shaft.

Goltens worked with class to gain approval for the procedure and arranged for inspection at various stages. Once approved, Goltens initiated the process starting with material identification and testing to ensure the proper material was used for the shaft.

Once the work on the shaft, including shaft seal liners and required machining was completed, final inspection by IRS Class was performed and the shaft was accepted.

  • Propeller-Shaft-Manufacture-Replacement-for-Offshore-Vessel-India1.jpg

  • Propeller-Shaft-Manufacture-Replacement-for-Offshore-Vessel-India2.jpg

  • Propeller-Shaft-Manufacture-Replacement-for-Offshore-Vessel-India3.jpg

PROJECT FACTS

OIL PLATFORM
Flange Diameter: OD 3,429 mm / ID 3,092mm
Depth of flange from surface: 6.3 mm
Hole Dia. and Qty: 41.27 mm x 96 Holes
Drilled hole depth: 80mm

ON-SITE MACHINING WORK SCOPE

  • Performed flatness checks with laser equipment
  • Machining of the 3,429mm OD flange
  • Ongoing monitoring of flatness and verification that final result was less than 0.17 mm.
  • Marking and drilling of 96 – 41.27mm diameter holes at required pitch

RESULTS

The entire activity from forging to final inspection and dispatching to the shipyard was closely monitored and successfully executed by the Goltens India team.

Goltens completed this job working 2 shifts teams to meet the customer’s schedule requirements. The job was completed on time to the full satisfaction of the customer.

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