SIST EN 1305:2018

Overview

EN 1305:2018 - "Inland navigation vessels - Connections for the discharge of oily mixture" is a CEN European Standard that specifies the design, dimensions, technical requirements and testing of connections used to discharge oily mixture from inland navigation vessels. It covers two common connection forms:

• Design R: threaded pipe with quick‑release coupling permanently installed on the vessel;
• Design F: adapter with ISO 7608 – A1 flange and welded threaded pipe with quick‑release coupling.

The standard is not applicable to disposal of cargo residues from cargo tanks and supersedes EN 1305:1996.

Key topics and technical requirements

• Connection type and components
  • Quick‑release coupling with nominal diameter DN 50 (as per EN 14420-6).
  • Pipe with threaded neck, adapter (flange ISO 7608 – A1) and blanking cap with chain.
• Dimensions and configuration
  • Coupling and adapter geometry to avoid spillage on disconnection.
  • Hose compatibility: design must allow a hose with 1 500 mm bend radius to be connected easily.
  • Operational clearance: minimum 175 mm radius and 60 mm depth behind the coupling for operation.
• Materials
  • Pipes and adapters: steel (manufacturer to select suitable grade).
  • Coupling bodies: brass (CuZn39Pb3 CW614N or CuZn40Pb2 CW617N) per EN 12420.
  • Blanking caps: wrought aluminium EN AW-6106 (EN 573-3).
• Testing, designation and marking
  • Acceptance by visual inspection and measurement.
  • Designation example: “Connection EN 1305 - R”.
  • Permanent marking: brown paint on pipe neck and nearby sign “Discharge connection for oily mixture EN 1305” (min. 7 mm font).
• Installation
  • Protect connections from damage and ensure they do not restrict adjacent walkways.

Applications and who uses it

EN 1305:2018 is used by professionals involved in inland vessel equipment, safety and environmental compliance:

• Shipbuilders and naval architects specifying bilge and oily discharge systems
• Equipment manufacturers and coupling suppliers producing quick‑release couplings and adapters
• Vessel operators, maintenance crews and port reception facilities for safe discharge operations
• Classification societies and regulatory bodies assessing conformity with European standards

Practical benefits include standardized interfaces for safe, leak‑free discharge, easier maintenance and interoperability between vessels and shore suction equipment.

Related standards

Normative references and related documents referenced by EN 1305:2018 include: ISO 7608, EN 14420-6, EN 573-3, EN 12420, EN ISO 228-1, EN ISO 4018, EN ISO 4034, EN 22768-1. These cover flange dimensions, coupling specifications, materials and general tolerances.