2.2.1 Bilge pumps
|Subject||Reference to the Rules||Service notation or other feature of the
to which relaxations apply
|Driven pumps for bilge, ballast, etc.||[2.1.4]||< 500 GRT||equivalent arrangements accepted|
|Drainage of cofferdams||[2.2.5]||< 500 GRT||hand pumps permitted|
|Ballast pumps||[2.3.2]||Shaft misalignment compensation, gastightness of the shaft gland and temperature sensors are not required|
|Air and sounding pipes of spaces other than cargo tanks||[2.4]||NA (1)|
|Cargo pumps|| [3.2.3]|
|Shaft misalignment compensation, gas-tightness of the shaft gland and temperature sensors are not required|
|Generation of static electricity||[3.4.4]||NA (1)|
|Bow or stern cargo loading and unloading arrangement||[3.4.5]||NA (1)|
|Cargo tank venting||[4.2]||See Tab 4|
|Cargo tank purging/gas-freeing||[4.3]||NA (1)|
|Tank level gauging||[4.4]||See Tab 4|
|Tank washing||[4.6]||NA (1)|
|Retention of oil on board||[5.2]||NA (1)|
|Oil discharge monitoring and control system||[5.3]||NA (1)|
|Oil contaminated water discharge arrangements||[5.4]||NA (1)|
|Survey of pollution prevention equipment||[6.3.2]||NA (1)|
(1) NA means that the requirements referred to in the second column of the table are not applicable.
|Item N°||Description of the document (1)|
|1||General layout of cargo pump room with details
|2||Diagram of cargo piping system|
|3||Diagram of the cargo tank venting system
|4||Diagram of the cargo tank level gauging system with overfill safety arrangements|
|5||Diagram of the cargo tank cleaning system|
|6||Diagram of the bilge and ballast systems serving the spaces located in the cargo area|
|7||Diagram of the cargo heating systems|
|8||Diagram of inert gas system with details of the inert gas plant|
|9||Diagram of gas measurement system for double hull and double bottom spaces|
(1) Diagrams are also to include, where applicable, the (local and remote) control and monitoring systems and automation systems
2.2.2 Draining of spaces
located outside the cargo areaFor bilge draining of spaces located outside the cargo
area, refer to Pt
C, Ch 1, Sec 10, .
Note 1 : Where the bilge pumps are designed to pump from the machinery space only, the internal diameter d, in mm, of the bilge main may be less than that required in Pt C, Ch 1, Sec 10, [6.8.1] but it is not to be less than that obtained from the following formula:
L0 : Length of the engine room, in m B : Breadth of the ship, in m
In any case, the internal section of the bilge main is not to
be less than twice that of the bilge suction pipes determined from Pt C, Ch 1, Sec
D : Moulded depth of the ship to the bulkhead deck, in m.
Attention is drawn to the requirements stated in Part C, Chapter 4 as regards the diameter to be adopted for the determination of fire pump capacity.
2.2.3 Draining of pump rooms
Note 1 : On tankers of less than 500 gross tonnage, the pump rooms may be drained by means of hand pumps with a suction diameter of not less than 50 mm.
2.2.4 Draining of tunnels and pump rooms other than cargo pump roomsArrangements are to be provided to drain tunnels and pump rooms other than cargo pump rooms. Cargo pumps may be used for this service under the provisions of [2.2.3], item b).
2.2.5 Draining of cofferdams
located at the fore and aft ends of the cargo spaces
Note 1 : On tankers of less than 500 gross tonnage, cofferdams may be drained by means of hand pumps with a suction diameter of not less than 50 mm.
2.2.6 Drainage of other cofferdams and void spaces located within the cargo areaOther cofferdams and void spaces located within the cargo area and not intended to be filled with water ballast are to be fitted with suitable means of drainage.