Regulation on Standard Discharge Connection - Annex I

• This regulation comes under MARPOL Annex I, Chapter 3 - Requirements for Machinery Spaces of All Ships, Part A - Regulation 13.

• The Standard Discharge Connection is provided to enable pipes of reception facilities to be connected with the ship's discharge pipeline for residues from machinery bilges and from oil residue tanks.

• Both pipelines shall be fitted with a standard discharge connection in accordance with the following table.

Standard dimensions of flanges for discharge connections

• The flange is designed to accept pipes up to a maximum internal diameter of 125mm.

• The flange shall be of steel or other equivalent material having a flat face.

• This flange, together with a gasket of oil-proof material, shall be suitable for a service pressure of 600kPa.  

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Reference: IMO Publications & Documents - International Conventions - MARPOL - Annex I