117 
mixtures containing noxious liquid substances as would remain for disposal 
from ships carrying them as a consequence of the application of this Annex : 
and 
(b) ship repair ports undertaking repairs to chemical tankers shall have 
facilities adequate for the reception of residues and mixtures containing 
noxious liquid substances. 
(2) The Government of each Party shall determine the types of facilities pro- 
vided for the purpose of paragraph (1) of this Regulation at each cargo loading 
and unloading port, terminal and ship repair port in its territories and notify the 
Organization thereof. 
(3) Each Party shall notify to the Organization, for transmission to the 
Parties concerned, of any case where facilities required under paragraph (1) of 
this Regulation are alleged to be inadequate. 
Regulation 8 
MEASURES OF CONTROL 
(1) The Government of each Party to the Convention shall appoint or authorize 
surveyors for the purpose of implementing this Regulation. 
Category A Substance in All Areas 
(2) (a) If a tank is partially unloaded or unloaded but not cleaned, an appro- 
priate entry shall be made in the Cargo Record Book. 
(vb) Until that tank is cleaned every subsequent pumping or transfer opera- 
tion carried out in connection with that tank shall also be entered in the Cargo 
Record Book. 
(3) If the tank is to be washed: 
(a) The effluent from the tank washing operation shall be discharged from 
the ship to a reception facility at least until the concentration of the substance 
in the discharge, as indicated by analyses of samples of the effluent taken by 
the surveyor, has fallen to the residual concentration specified for that substance 
in Appendix II to this Annex. When the required residual concentration has 
been achieved, remaining tank washings shall continue to be discharged to the 
reception facility until the tank is empty. Appropriate entries of these opera- 
tions shall be made in the Cargo Record Book and certified by the surveyor ; 
(ob) After diluting the residue then remaining in the tank with at least 5 per 
cent of the tank capacity of water, this mixture may be discharged into the sea 
in accordance with the provisions of sub-paragraphs (1)(a), (b) and (c) or 
7(a). (b) and (c), whichever is applicable, of Regulation 5 of this Annex. Ap- 
propriate entries of these operations shall be made in the Cargo Record Book. 
(4) Where the Government of the receiving Party is satisfied that it is im- 
practicable to measure the concentration of the substance in the effluent without 
causing undue delay to the ship, that Party may accept an alternative procedure 
as being equivalent to sub-paragraph (3) (a) provided that: 
(a) a precleaning procedure for that tank and that substance, based on 
standards developed by the Organization, is approved by the Administration 
and that Party is satisfied that such procedure will fulfil the requirements 
of paragraph (1) or (7), whichever is applicable, of Regulation 5 of this 
Annex with respect to the attainment of the prescribed residual concentra- 
tions ; 
(b) a surveyor duly authorized by that Party shall certify in the Cargo 
Record Book that: 
(i) the tank, its pump and piping system have been emptied, and 
that the quantity of cargo remaining in the tank is at or below the 
quantity on which the approved precleaning procedure referred to in 
‘ sub-paragraph (ii) of this paargraph has been based ; 
(ii) precleaning has been carried out in accordance with the pre- 
cleaning procedure approved by the Administration for that tank and 
that substance; and 
(iii) the tank washings resulting from such precleaning have been 
discharged to a reception facility and the tank is empty ; 
(c) the discharge into the sea of any remaining residues shall be in ac- 
cordance with the provisions of paragraph (3) (b) of this Regulation and 
an appropriate entry is made in the Cargo Record Book. 
