Selected Salient Points Flashcards
AT A PREMISES WHERE A SUB STATION IS WITHIN A BUILDING, THE TRANSFORMER/SUB STATION WILL BE SITUATED WHERE?
AGAINST AN OUTER WALL
WHAT IS THE MINIMUM (TIME) STANDARD OF FIRE RESISTANCE WITHIN SUB STATION BUILDINGS?
FOUR HOURS
WHAT WILL EVERY SUPPLY OR DISTRIBUTION FACILITY DISPLAY?
A UNIQUE IDENTIFIER, DISPLAYED ON A CONSPICUOUS INDICATOR PLATE
WHAT MAY OCCUR WHEN HIGH VOLTAGE EQUIPMENT IS EXPOSED TO HEAT OR SMOKE?
IONISATION OF THE SURROUNDING AIR ALLOWING ELECTRICITY TO ARC
TRUE OR FALSE?
ISOLATING THE SUPPLY TO HIGH OR LOW VOLTAGE CABLE/TRANSFORMER/SWITCH GEAR OR OTHER INSTALLATION WILL RENDER IT SAFE
FALSE: RESIDUAL CHARGE MAY BE PRESENT
THEFT OF ELECTRICAL COMPONENTS INCLUDING EARTH STRAPS MAY DO WHAT?
RENDER PARTS OF THE SITE LIVE WHICH WOULD OTHERWISE BE SAFE (THIS MAY INCLUDE GATES AND FENCES)
LARGE QUANTITIES OF WHAT MAY BE STORED WITHIN POWER GENERATING STATIONS?
FUEL
NAME SIX HAZARDOUS SUBSTANCES COMMONLY STORED IN POWER GENERATING STATIONS
- METHANOL
- PROPANE
- HYDROGEN
- METHANE
- CHLORINE
- OXYGEN
LARGE QUANTITIES OF GEARBOX OIL PRESENT IN NACELLES PRESENT THE RISK OF WHAT UNUSUAL HAZARD?
BURNING OIL DROPPING INSIDE OR OUTSIDE THE TOWER IF IGNITED DURING A FIRE
OIL FILLED TRANSFORMERS AND SWITCH GEAR CAN FAIL WITHOUT WARNING AND MAY POSE A RISK OF WHAT?
EXPLOSION
IN A FIRE, INSULATION MATERIALS MAY CREATE LARGE AMOUNTS OF?
TOXIC AND IRRITANT SMOKE
SOME TRANSFORMERS AND SWITCH GEAR ARE PROTECTED BY CO, SULPHUR HEXAFLUORIDE (SF6) OR VAPORISING LIQUID PRESENTING THE RISK OF?
ASPHYXIATION
WHAT IS SF6?
SULPHUR HEXAFLUORIDE: AN INSULATING AND INTERRUPTING MEDIUM USED IN MANY TYPES OF ELECTICAL APPARATUS
IN THE EVENT OF SF6 BEING INVOLVED IN A FIRE OR OTHER REACTION, WHO’S ADVICE SHOULD BE SOUGHT AND WHY?
HMEPO OR SA, AS HAZARDOUS BREAKDOWN PRODUCTS MAY BE PRESENT IN THE FORM OF A GAS OR POWDER.
WHAT ARE PCBs?
POLYCHLORINATED BIPHENYLS
