Class 2 (2nd Engineer) MEP 📅 Dec 2022

Exam Question

A single forged shaft for a small gear pump is broken in the middle. Suggest some emergency repairs to the shaft to enable run the pump. State the type of repair and procedure for carrying out the repairs. What is the most viable alternative to repair if no spares are available.

Reference Answer

Two emergency repair methods for a broken gear pump shaft are described below:
(a) Cold work process:
The pump is dismantled, and the broken shaft is removed.
Both halves of the broken shaft are machined and polished to fit face-to-face.

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