ISO 14726:2008

Ships and marine technology - Identification colours for the content of piping systems

ISO 14726:2008 specifies main colours and additional colours for identifying piping systems in accordance with the content or function on board ships and marine structures. These colours can also be used for piping systems on drawings and diagrams. ISO 14726:2008 does not apply to piping systems for medical gases, industrial gases and cargo. ISO 14726:2008 can also be used for land installations.

Navires et technologie maritime — Couleurs pour l'identification du contenu des systèmes de tuyauterie

General Information

• Status: Published
• Publication Date: 15-Apr-2008
• ICS: 01.070 - Colour coding
• ICS: 47.020.30 - Piping systems
• Technical Committee: ISO/TC 8/SC 3 - Piping and machinery
• Drafting Committee: ISO/TC 8/SC 3 - Piping and machinery
• Current Stage: 9093 - International Standard confirmed
• Start Date: 06-Jun-2024
• Completion Date: 13-Dec-2025

Relations

• Revises: ISO 14726-2:2002 - Ships and marine technology - Identification colours for the content of piping systems - Part 2: Additional colours for different media and/or functions
• Effective Date: 15-Apr-2008
• Revises: ISO 14726-1:1999 - Ships and marine technology - Identification colours for the content of piping systems - Part 1: Main colours and media
• Effective Date: 15-Apr-2008

Overview

ISO 14726:2008 - Ships and marine technology: Identification colours for the content of piping systems defines a standardized colour scheme for identifying the content or function of piping systems on board ships and marine structures. The standard specifies main colours and additional colours to be applied to piping and to piping representations on drawings and diagrams. ISO 14726:2008 replaces ISO 14726-1:1999 and ISO 14726-2:2002 and may also be applied to land installations. It explicitly does not apply to piping for medical gases, industrial gases and cargo.

Key topics and requirements

• Colour identification scheme: Establishes main and supplementary colours to indicate the substance or role of a pipe (content/function).
• Consistency across media: Colours are intended for physical pipe marking and for use on drawings, diagrams and documentation to maintain consistent identification.
• Scope and exclusions: Covers piping on ships and marine structures and can be used on land; excludes medical gases, industrial gases and cargo-related piping.
• Standardization intent: Supports interoperability and clear communication among designers, shipbuilders, crew and emergency responders by using a common visual language.

(Note: ISO 14726:2008 specifies the colour framework; consult the official document for the exact colour assignments and any geometric/placement guidance.)

Practical applications

ISO 14726:2008 is valuable for organizations and professionals involved in the maritime and offshore sectors who need clear, consistent piping identification:

• Shipbuilders and naval architects - integrate colour coding into ship systems design and as-built drawings.
• Marine engineers and piping designers - apply standard colours to assist system identification, operation and maintenance.
• Shipyards and contractors - mark piping during installation and commissioning for compliance and quality control.
• Vessel operators and crew - improve safety, rapid identification of systems during operations and emergencies.
• Maintenance and safety teams - streamline troubleshooting, repairs and emergency response.
• Technical documentation teams - use the same colour scheme on schematics, P&IDs and manuals to reduce misunderstanding.

Related standards

• Replaces: ISO 14726-1:1999 and ISO 14726-2:2002.
• Use in combination with other marine safety, piping and documentation standards (refer to relevant IMO, classification society and industry guidance for full compliance and implementation).

Using ISO 14726:2008 for piping colour codes helps reduce human error, speeds up maintenance and emergency actions, and promotes a uniform safety culture across fleets and installations. For precise colour codes and implementation rules, obtain the full ISO 14726:2008 publication.

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 14726
First edition
2008-05-01
Ships and marine technology —
Identification colours for the content of
piping systems
Navires et technologie maritime — Couleurs pour l'identification du
contenu des sytèmes de tuyauterie

Reference number
©
ISO 2008
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