IEC 60092-502:1999 defines specialized electrical safety requirements for tankers transporting flammable cargoes, establishing a "zonal concept" for hazardous area classification. The standard mandates certified safe-type equipment and provides guidelines for oil and gas carriers, recognized globally for compliance with SOLAS regulations. Read the full standard documentation at Iteh . INTERNATIONAL STANDARD IEC 60092-502
The standard dictates that electrical equipment should ideally be located in . If equipment must be placed in a hazardous zone, it must meet specific "Ex" protection ratings (such as flameproof, increased safety, or intrinsic safety). Technical Requirements for Tankers
This article provides a comprehensive analysis of this standard, its key requirements, why it still matters today, and how to access and apply it effectively. Under development IEC 60092-502 Edition 6
Under development IEC 60092-502 Edition 6.0 Stage code: ACD Forecast publication date 2028-06-30. IEC Webstore
Many websites offering free PDFs of this standard are illegal scan sites. They often contain: For any tanker built before 2016
Setting strict standards for cabling, earthing, and protection systems. Hazardous Area Classification
| Protection Method | Symbol | Application in Tanker | |------------------|--------|----------------------| | Flameproof | Ex d | Motors, junction boxes, lighting in Zone 1 | | Increased Safety | Ex e | Terminal boxes, lighting fittings (no arcing/sparking) | | Intrinsic Safety | Ex i | Instrumentation, level probes, temperature sensors | | Pressurized Enclosure | Ex p | Control rooms on deck (maintain overpressure) | | Oil Immersion | Ex o | Rarely used; generally for transformers | cargo pump room safety
Controlling the type of electrical equipment allowed in specific zones.
Although we focus on the 1999 edition, it’s important to note its evolution:
Nevertheless, the 1999 edition remains a cornerstone. Many of its "special features"—zoning, cargo pump room safety, static bonding, and ESD logic—continue unchanged in principle. For any tanker built before 2016, the 1999 edition is still the .
Many classification societies (ABS, DNV, ClassNK) provide licensed copies to their surveyors. If you are working on a class survey, ask your assigned surveyor for an extract or interpretation.