Operation and Maintenance of Electrical Installations in Hazardous areas on LPG / LNG and Oil/Chemical Tankers.
Course Contents:
- International/ national regulation / standards on vessels
- Introduction to hazardous areas
- Explosion theory
- Properties of gases / liquids / solvents (LNG/LPG)
- Flash point, ignition temp, explosion limits LEL-UEL
- Density, gas groups and Temp. class
- Ignition sources, electrical arc, frictional sparks, hot surface and static electricity. (ESD)
- Classification of hazardous areas (Zones)
- Methods of protection Ex d, Ex e, Ex p, Ex q, Ex o, Ex ia, Ex ib, Ex ic, Ex m, Ex n, Ex s. . Certification / marking of Ex-equipment
- Ex-motors with protections devices Ex d, Ex e, Ex n, Ex p
- Earthing and bonding in hazardous areas
- Power system in hazardous areas
- Intrinsically safe systems / instrumentation
- Zener barrier, isolators
- Certification control of Ex loops
- Ignition graphs ohm / inductive / capacitive
- Gas detection sensors and meters / work permits
- Maintenance / repair of Ex-equipment
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