ISO 18770:2005

Overview - ISO 18770:2005 (Ships and marine technology)

ISO 18770:2005 provides guidance and requirements for preventing leakage and reducing fires originating from machinery‑space flammable oil systems on ships. Applicable to new and existing vessels, the standard covers design, construction, testing, installation, maintenance and inspection of systems containing fuel oil, lubricating oil, hydraulic oil and other flammable oils. It is intended for designers, shipyard and engine‑room personnel, owners, operators and maintenance teams and is used as a practical supplement to SOLAS requirements issued by the IMO.

Key topics and technical requirements

The standard addresses practical engineering and operational measures to minimise leakage and ignition risks. Major technical topics include:

• General piping system considerations
  • Human element, training and operational procedures
  • Routine inspection, maintenance and record keeping
• Flexible hose and hose assemblies
  • Restricted use, certified construction, hydrostatic testing and fire‑resistance evidence
  • Manufacturer installation requirements (bend radius, orientation) and periodic inspection
• Spray shields and protection
  • Application, design guidance and maintenance to prevent oil spray reaching ignition sources
• Jacketed high‑pressure fuel lines and bellows expansion joints
  • Design and inspection guidance for containment and movement accommodation
• Filters, strainers, insulation and other mechanical components
  • Installation, inspection and maintenance practices to avoid leaks and hot‑surface ignition
• Operational and maintenance hazards
  • Managing high‑pressure pulses, vibration, frequent dismantling and human factors that contribute to leaks
• Annexes
  • Installation guidelines (hose assemblies, spray shields) and a supporting bibliography

The document references related test standards (e.g., ISO 15540 for hose fire‑resistance) and notes specific definitions (for example, hot surface is a surface exceeding 220 °C).

Practical applications - who uses ISO 18770:2005

ISO 18770:2005 is used across the maritime lifecycle to enhance safety and regulatory compliance:

• Ship designers and naval architects - incorporate leak‑prevention features into machinery‑space systems
• Shipyards and builders - follow installation and testing requirements during construction and retrofits
• Marine engineers and engine‑room crews - implement inspection schedules, maintenance and emergency procedures
• Owners, operators and safety managers - develop safety management systems, risk assessments and compliance audits
• Flag administrations and surveyors - use the standard as guidance when assessing compliance with SOLAS and industry best practice

Related standards

• SOLAS (IMO) regulations on flammable oils - ISO 18770:2005 is intended as a supplement
• ISO 15540 - referenced for fire‑resistance testing of hoses

Keywords: ISO 18770:2005, flammable oil systems, machinery space, leak prevention, marine safety, SOLAS, ship design, flexible hose, spray shields, inspection and maintenance.