4.2 Oil Content Meters
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Statutory Documents - IMO Publications and Documents - Resolutions - Marine Environment Protection Committee - Resolution MEPC.60(33) - Guidelines and Specifications for Pollution Prevention Equipment for Machinery Space Bilges of Ships - (adopted on 30 October 1992)Clasifications Register Note: See also Resolution MEPC.107(49) - Annex - Guidelines and Specifications for Pollution Prevention Equipment for Machinery Space Bilges of Ships - 4 Technical Specifications - 4.2 Oil Content Meters

4.2 Oil Content Meters

  4.2.1 These specifications relate to oil content meters for bilge alarms.

  4.2.2 The meters should resist corrosion in conditions of the marine environment.

  4.2.3 The meters should, if intended to be fitted in locations where flammable atmospheres may be present, comply with the relevant safety regulations for such spaces. Any electrical equipment which is part of the meter should be placed in a non-hazardous area, or should be certified by the Administration as safe for use in a hazardous atmosphere. Any moving parts which are fitted in hazardous areas should be arranged so as to avoid the formation of static electricity.

  4.2.4 The meter should not contain or use any substance of a dangerous nature, unless adequate arrangements, acceptable to the Administration, are provided to eliminate any hazards introduced thereby.

  4.2.5 It is desirable that the reading should not be affected by the type of oil. If it is, it should not be necessary to calibrate the meter on board ship, but pre-set alterations in the calibration in accordance with instructions drawn up at the time of manufacture are permitted. In the latter case, means should be available to check that the correct calibration has been selected for the oil in question. The accuracy of the readings should at all times remain within the limit specified in paragraph 2.2.1 of part 2 of the annex.

  4.2.6 The response time of the meter, that is, the time which elapses between an alteration in the sample being supplied to the meter and the meter showing the correct response, should not exceed 20 seconds.

  4.2.7 The meter should be fitted with an alarm device which can be set to operate automatically at any pre-stated value either to alert the crew of the ship or to operate control valves. The meter for the bilge alarm should be fitted with an alarm device which should be pre-set by the manufacturer to activate when the effluent exceeds 15 ppm. These alarms should also operate automatically if at any time the meter should fail to function, require a warm-up period or otherwise by de-energized.

  4.2.8 It is recommended that a simple means be provided aboard ship to check on instrument drift, and to confirm the accuracy and repeatability of the instrument reading.

Parent topic: 4 Technical Specifications
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