L Saftey

Question 1

3 types of change over switches

Answer 1

Normal/Alternate
Normal/emergency
Normal/emergency/alternate

Question 2

How would you prove a circuit is dead

Answer 2

Using voltage tester to measure for 0 volts between a phase and a phase and a phase and earth

Question 3

What hazards are associated with tantalum capacitors

Answer 3

If explode can release sulphuric acid

Question 4

What hazards are associated with Selenium rectifiers and what should you wear if they burn out

Answer 4

Release toxic dust and BA

Question 5

What is the cleaning agent used on electrics

Answer 5

Lotoxane which has flashpoint of 53 degree

Question 6

What is class 1 radio active valve

Answer 6

Theta

Question 7

What is radio active class 2

Answer 7

Trefoil

Question 8

What is radio active caution

Answer 8

Hazardous radio active valve

Question 9

What 2 live supply voltages would you never work above

Answer 9

1000 AC and 1500DC

Question 10

What are the 5 human failures

Answer 10

Failure to observe safety procedures,
familiarity,
shoddy work,
working in damp area,
failure to test properly

Question 11

What do u need to wear when in galley

Answer 11

.dms boots
.pcs/overalls sleeves rolled down
.chefs paper hat

Question 12

If fire in galley what would you turn off

Answer 12

All supply’s via the isolation switches

Question 13

What reasons would you work on live equipment and with who

Answer 13

.when no alternative option and given permission from meo
.must be supervised by Me senior rate

Question 14

Personnel working on live supply must (8 mark)

Answer 14

-do not take unnecessary risk
-wear rubber gloves
-use insulated tools
-stand on rubber insulated mats
-wear insulated footwear
-don’t rely on interlocks
-do not work alone
-work with one hand if possible

Question 15

Why would you fit shorting straps

Answer 15

To stop recharging

Question 16

How do you prove a supply is dead

Answer 16

Check for voltage between all phases and earth.GPTME reads 0 volts

Question 17

Why would you use shorting straps

Answer 17

Prevent re charging

Question 18

Inserting fuse procedure

Answer 18

-Remove 1 empty fuse holder
-use test equipment to ensure supply is dead
-replace fuse with correct size fuse

Question 19

When should you test for dead

Answer 19

-When been for a brake
-Handing over or taking over from someone

Question 20

What does HCOS stand for

Answer 20

Hand change over switch

Question 21

Why do you turn head away when fitting fuse

Answer 21

Incase of arcing

Question 22

Fuse insertion procedure
(8mark)

Answer 22

-Remove empty fuse holder
-using test equipment ensure 0volts
-if 0 volts replace fuse
-make sure correct size and rating
-turn head away and smartly insert fuse
-tighten with fuse key
-destroy labels
-complete saftey certificate
-Complete logo index

Question 23

Biggest hazard in galley

Answer 23

Deep fat fryer

Question 24

What should you do before changing (hand change over switch) setting

Answer 24

-Ensure motor had stopped
-wait 10 seconds before you change supply

Question 25

What does HV live inform personal

Answer 25

Generating or is capable of generating HV or is connected to HV shore supply

Question 26

HV dead means

Answer 26

Ship is no longer generating,distributing or receiving HV

Question 27

HV safe means

Answer 27

A compartment is safe to enter and HV decay periods have elapsed

Question 28

What is the definition of a Competent person

Answer 28

A person who has sufficient technical knowledge or experience to enable a person to avoid danger from electric hazards

Question 29

long term lotto

Answer 29

Long term LOTO is something over 6 months