Transport Publication - TP 12301 E (2008)
- 5.0 General Provisions
- 6.0 Application
- 7.0 Technical Specifications for "Bilge Alarms"
- 8.0 Specification for Type Approval of Pollution Prevention Equipment
- 9.0 Approval and Certification Procedures
5.1 Providing grab samples are taken, and calibration, cleansing and testing procedures are sequenced as detailed in this specification, testing equipment shown in Figure 2 in Schedule 1 may be used in lieu of the testing equipment shown in Figure 1.
6.1 This Standard applies:
- to installations fitted to ships, the keels of which are laid, or which are at a similar stage of construction, on or after January 1, 2005; and
- to new installations fitted on or after January 1, 2005 to ships, the keel of which were laid or which were at similar stage of construction before January 1, 2005.
7.0 Technical Specifications for "Bilge Alarms"
7.1 This specification refers to bilge alarms that have a meter with associated alarm, that are capable of detecting and measuring 5 ppm or less of oil in a ship’s machinery space bilge water overboard discharge.
7.2 It shall be a robust and practical instrument suitable for shipboard use.
7.3 It shall resist corrosion in the conditions of the marine environment and shall be compatible with the liquids that it will monitor.
7.4 It shall not contain or use any substance of a dangerous nature, unless adequate arrangements are provided to eliminate any hazards introduced thereby.
7.5 It shall, 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 that is part of the meter shall be placed in a non-hazardous area, or shall be certified as safe for use in a hazardous atmosphere. Any moving parts that are fitted in hazardous areas shall be arranged so as to avoid the formation of static electricity.
7.6 The response time of the 5 ppm Bilge Alarm, that is, the time which elapses between an alteration in the sample being supplied to the 5 ppm Bilge Alarm and the ppm display showing the correct response, shall not exceed 5 seconds.
7.7 A ppm display shall be provided. The ppm display should not be affected by emulsions and/or the type of oil given that the test fluid detailed in paragraph 1.2.4 of Part 1 of the annex to MEPC .107(49) is deemed to represent a mixture that may be expected in the machinery space bilges of a ship. It should not be necessary to calibrate the Bilge Alarm on board ship, but onboard testing according to the manufacturers instructions shall be permitted. The accuracy of the meter shall be such that the reading will represent within +/- 3 ppm , the actual oil content of the sample being tested.
7.8 The Bilge Alarm shall be fitted with an electrical/electronic device which should be pre-set by the manufacturer to activate when the effluent exceeds 5 ppm and shall do so with an accuracy of +/- 1 ppm . This shall also operate automatically if at any time the Bilge Alarm should fail to function, require a warm-up period or otherwise be de-energized. The accuracy the Bilge Alarm shall remain within the above limits despite the presence of contaminants other than oil, and the power supply varying by 10% from the design value, i.e. inrespect of electricity, compressed air, etc.
7.9 It is required that a simple means be provided aboard ship to check on instrument drift, repeatability of the instrument reading, and the ability to re-zero the instrument.
7.10 The Bilge Alarm shall record date, time and alarm status, and operating status of the oil filtering equipment. The recording device shall also store data for at least 18 months and shall be able to display or print a protocol for official inspections as required. In the event the Bilge Alarm is replaced, means shall be provided to ensure the data recorded remains available on board for 18 months.
7.11 The following items shall be included:
- every access of the Bilge Alarm beyond the essential requirements of paragraph 7.8 requires the breaking of a seal; and
- the Bilge Alarm shall be so constructed that the alarm is always activated whenever clean water is used for cleaning or zeroing purposes.
7.12 The accuracy of the Bilge Alarm shall be checked at International Oil Pollution Prevention Certificate renewal surveys or Canadian Oil Pollution Prevention Certificate renewal surveys and shall be done according to the manufacturers instructions. Alternatively the unit may be replaced by a calibrated Bilge Alarm. The calibration certificate for the Bilge Alarm, certifying date of last calibration check, shall be retained onboard for inspection purposes. The accuracy checks can only be done by the manufacturer or persons authorized by the manufacturer.
7.13 The Bilge Alarm shall comply with the test and performance requirements of Part 2 of this Standard.
8.0 Specification for Type Approval of Pollution Prevention Equipment
8.1 Production Model: A production model bilge alarm for which the approval will apply shall be identical to the equipment type-tested in accordance with the test and performance specifications contained in Part 2 of this Standard.
9.0 Approval and Certification Procedures
9.1 Apparatus for which a Certificate of Type Approval for 15 ppm has been issued in accordance with IMO Resolution MEPC .107(49) and which in every particular also fulfils the relevant requirements of these specifications, may be approved for use in ships in Canadian inland waters under section 12 of the Regulations.
9.2 Apparatus that meets the requirements of paragraph 9.1 may be issued with a Canadian Certificate of Type Approval in accordance with section 14 of this Standard.
9.3 A copy of the Certificate of Type Approval for the oil bilge alarm shall be carried on board each ship that is fitted with such equipment.