Document ID: chunk:federal_register_of_legislation:C2010C00802:schedule:6:p8
Version: federal_register_of_legislation:C2010C00802
Segment Type: schedule
Provision Reference: sch 6 (pt 8/29)
Character Range: 88201–91064

been achieved, remaining tank washings shall continue to be discharged to the reception facility until the tank is empty. Appropriate entries of these operations shall be made in the Cargo Record Book and endorsed by the surveyor referred to under paragraph (1) (a) of this Regulation.

(4) Where the Government of the receiving party is satisfied that it is impracticable 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 paragraph (3) of this Regulation provided
that:

     (a) The tank is prewashed in accordance with a procedure approved by the Administration and based on standards developed by the Organization; and

     (b) The surveyor referred to under paragraph (1)(a) certifies in the Cargo Record Book that:
          (i) the tank, its pump and piping systems have been emptied; and
          (ii) the prewash has been carried out in accordance with the prewash procedure approved by the Administration for that tank and that substance; and
          (iii) the tank washings resulting from such prewash have been discharged to a reception facility and the tank is empty.

Category B and C substances outside Special Areas

(5) With respect to Category B and C substances, the following provisions shall apply outside Special Areas:

       (a) A tank which has been unloaded shall, subject to the provisions of sub‑paragraph (b) of this paragraph, be prewashed before the ship leaves the port of unloading, whenever;
          (i) the substance unloaded is identified in the standards developed by the Organization as resulting in a residue quantity exceeding the maximum quantity which may be discharged into the sea under Regulation 5(2) or (3) of this Annex in case of Category B or C substances respectively; or
          (ii) the unloading is not carried out in accordance with the pumping conditions for the tank approved by the Administration and based on standards developed by the Organization as referred to under Regulation 5A (5) of this Annex, unless alternative measures are taken to the satisfaction of the surveyor referred to in paragraph (1)(a) of this Regulation, to remove the cargo residues from the ship to quantities specified in Regulation 5A of this Annex as applicable.

     The prewash procedure used shall be approved by the Administration and based on standards developed by the Organization and the resulting tank washings shall be discharged to a reception facility at the port of unloading.

       (b) At the request of the ship's master, the Government of the receiving party may exempt the ship from the requirements of sub‑paragraph (a) of this paragraph, where it is satisfied that:
          (i) the tank unloaded is to be reloaded with the same substance or another substance compatible