Mandatory High Voltage Instruments for Ships
Safety Equipment:
- Personal protective equipment (PPE) including insulated gloves, safety goggles, and arc flash protective clothing
- Insulated tools specifically designed for high voltage work
Testing and Measurement Devices:
- High voltage test probes and multimeters
- Insulation resistance testers capable of measuring high voltage equipment
- Polarization Index (PI) testing equipment
Note:
PI testing equipment is designed to measure the insulation resistance of electrical systems over time. The test involves applying a high DC voltage to the insulation and measuring the resistance at specific intervals, typically at 1 minute and 10 minutes. The ratio of these two measurements provides the Polarization Index, which helps evaluate the quality and deterioration of the insulation
Safety and Isolation Tools:
- Voltage detectors to verify the absence of voltage before work
- Earthing devices for isolating equipment
- Locking devices and safety tags for isolation procedures
Diagnostic Equipment:
- Partial discharge detectors for insulation testing
- Thermal imaging cameras for identifying potential hotspots
Documentation and Training Aids:
- High voltage safety manuals and procedures
- Switching strategy documentation
- High voltage simulator for training purposes (recommended but not mandatory)
Note: All high voltage instruments must be properly calibrated, maintained, and used only by qualified personnel. Regular inspections and testing of these instruments are essential to ensure their reliability and the safety of the crew working with high voltage systems onboard.
