Class 4 (4th Engineer) MET 📅 Dec 2024

Exam Question

With respect to personnel carrying out inspection and maintenance involving entry to boilers and other confined spaces:

(a) State the precautions needed for the operations of portable electrical tools and lighting, with respect to safety; (10)

(b) Outline the routine checks carried out on the equipments. (6)

Reference Answer

### Introduction
Working in confined spaces such as boilers, tanks, and pressure vessels presents an elevated risk of electric shock. The environment is typically metallic, damp, and cramped, which significantly reduces the body's electrical resistance and increases the likelihood of a person forming a path to earth. Therefore, standard shipboard voltages (e.g., 440V/220V) are unacceptably hazardous. The implementation of stringent safety protocols and the use of specialized, low-voltage equipment are mandatory under international regulations (e.g., SOLAS, Code of Safe Working Practices for Merchant Seafarers - COSWP) and company Safety Management Systems (SMS).
### Part (a): Safety Precautions for Operation (10 Marks)
The following precautions are essential when operating portable electrical tools and lighting inside a boiler or similar confined space:

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