L Safety Flashcards
What are the major causes of accidents?
Pre-occupation Ignorance, lack of skill Over-familiarality Laziness Physical hazards Horseplay
3 steps to minimize or eliminate the accident
Know the hazard
Maintain safety discipline
Develop the habit of noticing potential dangers
3 Basic causes of electric shock?
Equipment failure Human failure - failure to observe - familiarity - shoddy work - damp surroundings - failure to test properly Combination of both
What milliamps with cause muscular contractions?
1mA - Involuntary reaction
10mA - Prevent from releasing hold
20mA - Physical damage
30mA - Can Kill
4 results of electric shocks
Death or unconsciousness
Asphyxia
Electric burns
Psychological shock
Electric shock procedure
- Raise alarm
- Isolate person from supply
- If not possible stand on dry insulated material
Pull casualty clear of contact using insulated material - Check for response if not shout for help, open airway, check breathing and take appropriate action.
4 Reasons for LOTO procedure
Maintenance to proceed without hazard to maintainers.
Isolate equipment that’s defective.
Prevent selection of mode or operation which may be unavailable.
Supplies have been provided by are yet to be fitted.
4 parts of the LOTO system
LOTO index sheet
LOTO safety certificate
LOTO label
LOTO display board
6 Short term tag out log parts
MEO inspection records
Part 1 inspection records
Part 2 audit records
Part 3 the short term loto index
Part 4 short term system loto safety certificates
Part 5 closed short term loto safety certificatez
What 5 reasons should a long term loto be used?
Equipment out of action 6months + Redundant equipment Supplied are yet to be installed Temporary equipment removed Short term lotos in excess of 6 months
Before tagging out a piece of equipment or system what two steps must be carried out?
All isolation points are to be identified
The equipment user is to be informed
5 steps of removing fuses
- Place finger in centre of holder
- Unscrew with free hand with fuse key
- Grasp holder after unscrewed turn head away and remove smartly
- remove fuse from holder and replace
- repeat fuse way
3 dangerous components
Tantalum capacitor
Selenium rectifier
Pemetone TPC
What precautions are taken with Penetone TPC
Flash point of 53°C Keep away from naked flames Exhaust fans running Never sprayed on live equipment Always wear rubber gloves
Live electrical equipment precautions
Do not take risks Wear rubber gloves if possible Use insulated tools Don't cause short circuits Insulated footwear Be aware of voltages present Don't rely on interlocks Do not work alone
