Q2. A. A hydraulically operated ballast tank valve situated in the duct keel has failed to close. State as Second Engineer your procedure for directing safe entry by engine room staff to the duct keel to ascertain the cause and possibility to carry out a repair.
B. State if any procedure is to be followed before making an entry, and the relevant IMO code under which such procedures are required
Q3. a) Define enclosed space. Give examples of enclosed space on ships. (8)
b) What is the procedure for enclosed space entry, describe the same. (8)
c) What type of permit is required for entry into enclosed spaces and how is it issued. What is its validity. (4)
Q3. i) Name the gases usually found inside enclosed space? (6)
ii) What instruments are used in detecting/checking the gases which are present (6)
iii) What is the minimum level of oxygen required for entry into enclosed space. (2)
iv) With a simple diagram, explain the working of oxygen content meter. (6)
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