Dems

Question 0

What length is det cord?

Answer 0

70m

Question 1

What is the weight of a PE7 block?

Answer 1

500g

Question 2

What length comes on a reel of safety fuze? And how much can be used?

Answer 2

8m and 7.1m

Question 3

What is the testing procedure of safety fuze?

Answer 3

300mm discard
300mm test for time 35-43seconds
300mm discard

Question 4

Lengths of det cord tail with and without a jonny?

Answer 4

100 & 300mm

Question 5

What states are D1-6?

Answer 5

D1 electrical
D2 non electrical
D3 combination
D4 stores own explosives
D5 simultaneous (3 methods)
D6 burn

Question 6

How long is a lap joint?

Answer 6

100mm

Question 7

How many dets to a box?

Answer 7

2

Question 8

What is the difference between the black boxes for electric dets and flash dets?

Answer 8

Elec dets - embossed E underneath

Flash dets - smooth

Question 9

Black and Tan length and twists?

Answer 9

250m 42-62 twists per meter

Question 10

How soon can you revisit a dems site?

Answer 10

After the fallout has settled

And the smoke has cleared

Question 11

What joints can be used for main lines and ring mains?

Answer 11

Lap joint
Y joint
P joint 
Clove hitch
Det clip

Question 12

How many det cord boosters per box and what is embossed underneath?

Answer 12

2 and ‘O’

Question 13

How long should electrical cables be earthed before connection?

Answer 13

5 seconds

Question 14

What is the minimal power requirement for the DRFD?

Answer 14

6p

Question 15

After carrying out a burn, how long should you wait before returning to site?

Answer 15

30mins after last smoke

Question 16

What does ‘U’ mean on the DRFD?

Answer 16

Signal strength

Question 17

DRFD - what is the max operational firing distance?

Answer 17

3km

Question 18

How long for RTC?

Answer 18

5mins