Document ID: chunk:federal_register_of_legislation:F2018L01173:body:0:p87
Version: federal_register_of_legislation:F2018L01173
Segment Type: other
Provision Reference: 
Character Range: 225215–228033

compressors and systems should be properly maintained to avoid leakage of refrigerant, either in the compressor room or in the refrigerated compartments. Where refrigerating equipment is isolated, the responsible engineer officer should be notified before entering the machinery room or compartment.
Should it be known or suspected that the refrigerant has leaked into any compartments, no attempt should be made to enter those compartments until a responsible officer has been notified of the situation. If it is necessary to enter the space, the procedures for entry into confined spaces should be followed (section 7).
The compartment or flat in which refrigeration machinery is fitted should be adequately ventilated and illuminated. Where fitted, both the supply and exhaust fans to and from compartments in which refrigeration machinery is situated should be kept running at all times. Inlets and outlets should be kept unobstructed. When there is any doubt as to the adequacy of the ventilation, a portable fan or other suitable means should be used to assist in the removal of toxic gases from the immediate vicinity of the machine.
When refrigerant plant is being charged through a charging connection in the compressor suction line, the cylinder is sometimes heated to evaporate the last of the liquid refrigerant. This should only be done by placing the cylinder in hot water or some similar indirect method and never by heating the cylinder directly with a blow lamp or other flame.
If it is necessary for repair or maintenance to apply heat to vessels containing refrigerant, appropriate valves should be opened to prevent build-up of pressure within the vessels.

18.7              Oil-based systems
There is a risk of fire associated with the rupture of unprotected oil lines and joints.
Precautions should be taken when working on systems containing oil, in particular, hot oil.
All protective covers on oil lines should be drained before removing same. Protective covers should be promptly replaced after completion of any work and after verification that no leaks are evident in the system.
Safety devices of oil pumps, oil heaters and coolers should be well maintained.

18.8              Steering gear
The operation of the steering gear should be checked or inspected at frequent intervals by the responsible officer and safety devices should be ready to operate at all times.
The steering gear should be tested within 12 hours before proceeding to sea in accordance to SOLAS Regulations V/26.
Generally work should not be done on steering gear when a ship is under way. If it is necessary to work on steering gear when at sea, the ship should be stopped and the rudder immobilised by closing the valves on the hydraulic cylinders or by other appropriate means.

18.9              Control rooms and