556 



three years. The monitoring and control system shall come into opera- 

 tion when there is any discharge of effluent into the sea and shall be 

 such as will ensure that any discharge of oily mixture is automatically 

 stopped when the oil content of effluent exceeds that permitted by 

 Eegulation 9(1) (b) of this Annex. Any failure of this monitoring 

 and control system shall stop the discharge and be noted in the Oil 

 Eecord Book. The defective unit shall be made operable before the 

 ship commences its next voyage unless it is proceeding to a repair 

 port. Existing ships shall comply with all of the provisions specified 

 above except that the stopping of the discharge may be performed 

 manually. 



(6) Oily water separating equipment or an oil filtering system shall 

 be of a design approved by the Administration and shall be such as 

 will ensure that any oily mixture discharged into the sea after passing 

 through the separator or filtering systems shall have an oil content of 

 not more than 100 parts per million. In considering the design of such 

 equipment, the Administration shall have regard to the specification 

 recommended by the Organization. [•*] 



(7) The oil filtering system referred to in paragraph (2) (b) of 

 this Eegulation shall be of a design approved by the Administration 

 and shall be such that it will accept the discharge from the separating 

 system and produce an effluent the oil content of which does not exceed 

 15 parts per million. It shall be provided with alarm arrangements to 

 indicate when this level cannot be maintained. 



REGULATIOX 17 



Tanks for Oil Residues {Sludge) 



(1) Every ship of 400 tons gross tonnage and above shall be pro- 

 vided with a tank or tanks of adequate capacity, having regard to the 

 type of machinery and length of voyage, to receive the oily residues 

 (sludges) which cannot be dealt with otherwise in accordance with 

 the requirements of this Annex, such as those resulting from the puri- 

 fication of fuel and lubricating oils and oil leakages in the machinery 

 spaces. 



(2) In new ships, such tanks shall be designed and constructed so as 

 to facilitate their cleaning and the discharge of residues to reception 

 facilities. Existing ships shall comply with this requirement as far as 

 is reasonable and practicable. 



REGULATION 18 



Pumfing^ Piping and Discharge Arrangements of Oil Tankers 



(1) In every oil tanker, a discharge manifold for connexion to re- 

 ception facilities for the discharge of dirty ballast water or oil con- 

 taminated water ghall be located on the open deck on both sides of 

 the ship. 



(2) In every oil tanker, pipelines for the discharge to the sea of 

 effluent which may be permitted under Eegulation 9 of this Annex 

 shall be led to the open deck or to the ship's side above the waterline 

 in the deepest ballast condition. Different piping arrangements to 



^ See footnote 3 on page 555. 



