TASCO Exit Exam • Set 5 Question 21 of 30
Pneumatically Operating Valve; what is the most critical component for correct valve operation, based on your shipboard experience of running such a system?
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Direct Answer
Option C: The Diaphragm
The diaphragm in a pneumatically operated valve is the most critical component, as it acts as the sealing/actuating mechanism; if it fails or ruptures, the valve loses its ability to respond to control signals or maintain its position.
All Options
A
Valve stem
B
The valve springs
C
The Diaphragm
(Correct Answer)
D
Valve orifice
Detailed Explanation & Context
The diaphragm in a pneumatically operated valve is the most critical component, as it acts as the sealing/actuating mechanism; if it fails or ruptures, the valve loses its ability to respond to control signals or maintain its position.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Training for Oil Tanker Cargo Operations (TASCO).
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