Class 2 (2nd Engineer) SSEP 📅 Feb 2023

Exam Question

(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

Reference Answer

(a) All conditions for entry into the duct keel, including the issue of an entry permit, must be observed. Before work is undertaken, a check should be made to ensure there is no loose scale, sludge, or hydraulic oil in the vicinity which, if disturbed or heated, could give off toxic or flammable gases.
The senior officer issuing the permit must ensure:
Accessibility : The space should be accessible with no outwardly visible hazards, such as broken ladders, obstructions, etc.
Ventilation : The duct should be ventilated thoroughly prior to entry. The atmosphere must be checked at different locations for: O₂ – 20%

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