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CHEMCO Exit Exam • Set 7 Question 10 of 30

Statements on Boiler: identify a statement that supports the use of a watertube boiler with a superheater in many tanker vessels?

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Direct Answer

Option C: Without having steam at superheated condition, you may not be able to operate the cargo pump turbines efficiently and safely

Superheated steam is critical for driving cargo pump turbines efficiently and safely on many tankers. Without it, turbine performance would be significantly degraded, impacting cargo discharge rates and operational reliability, as per standard engineering practices for steam-driven machinery.

All Options

A
The boiler on a tanker vessel is equally important as the main propulsion engines
B
On a large oil tanker, the fuel consumption in the boiler could be as high as 2/3rd of the engines.
C
Without having steam at superheated condition, you may not be able to operate the cargo pump turbines efficiently and safely (Correct Answer)
D
Without having steam, you may not be able to maintain the oil temperatures correctly within the cargo tanks for discharging.

Detailed Explanation & Context

Superheated steam is critical for driving cargo pump turbines efficiently and safely on many tankers. Without it, turbine performance would be significantly degraded, impacting cargo discharge rates and operational reliability, as per standard engineering practices for steam-driven machinery.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Chemical Tanker Cargo Operations (CHEMCO).

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