Demolition Operations Actual Exam Questions
And Answers Verified 100% Correct
What is a galvanometer used for? - ANSWER- To test continuity of firing wire and
electric blasting caps.
(TRUE/FALSE) Any kind of battery can be used in a galvanometer? - ANSWER- False,
only silver chloride dry cell batteries can be used.
What is the purpose of a firing wire? - ANSWER- Used to connect one or more
explosive items for electrical firing to a blasting machine.
When will a firing wire be tested? - ANSWER- While on the reel, retested after it is laid
out, and tested again prior to firing.
What is double conductor heavy-duty cable made of? - ANSWER- Steel and Copper
What is double-conductor lightweight wire made of? - ANSWER- Bronze and copper.
RL 39B - ANSWER- Firing wire reel
Firing wire reel can hold... - ANSWER- 500' heavy-duty, 1,000 lightweight firing wire.
M32 - ANSWER- Ten cap blasting machine.
M34 - ANSWER- Fifty cap blasting machine.
How deep are the M32, and M34 waterproof to? - ANSWER- 3 feet
How deep can MK1 MOD1 be taken? - ANSWER- Waterproof up to 60' and may be
transported to 240'
Capacity of CD 450-4J? - ANSWER- 65 caps
Power of CD450-4J? - ANSWER- 450 volts, 130 ohms.
CD450-4J is powered by a 9 volt battery, how many charge fire cycles is it good for? -
ANSWER- 350 Charge cycles
(TRUE/FALSE) M6/MK11 electric blasting caps are not waterproof. - ANSWER- False
,TRUE/FALSE MK11 is a HERO safe blasting cap. - ANSWER- True
MK 663 MOD 0 blasting cap container holds up to ___ blasting caps. - ANSWER- 10
True/False If one cap in a series circuit is bad the rest of the caps will still detonate. -
ANSWER- False, if ones bad, the series doesn't work.
Amps required to fire a series circuit? - ANSWER- 1.5 amps regardless
Amps required to fire a parallel circuit? - ANSWER- 0.6 amps per cap.
Wait before investigating electrical misfire? - ANSWER- 30 minutes
M81 - ANSWER- Fuse iginiter
3 assemblies of the M81? - ANSWER- Primer base, fuse holder, firing pin.
Average burn rate of time fuse? - ANSWER- 36-44 seconds per foot.
Time fuse is distinguished from detonating cord by... - ANSWER- It's black powder core.
What is the M2 crimped used for? - ANSWER- To cut time fuse and det cord.
How long must you wait to investigate non-electric misfire? - ANSWER- 60 minutes
What type of initiating is the MK55,MK23 MOD 0, MK24 MOD 0, MK25 MOD 0 and
MK54 used for? - ANSWER- Shock tube/ NONEL
How long must you wait to investigate a shock tube initiated misfire? - ANSWER- 30
minutes
M112 Demolition charge (C-4) - ANSWER- 1 1/4 lb C-4 packed in a Mylar-film wrapper.
M118 Demolition charge - ANSWER- Four 1/2 lb sheets of PETN or RDX.
Roll demolition charge - ANSWER- 50 foot roll of M118.
MK140 MOD 0 Flexible charge - ANSWER- 20 gram PETN tubular charge 3' long.
Military dynamite - ANSWER- 1/2 lb of 75% RDX/ 25% TNT
, TNT water resistance? - ANSWER- Excellent
Tubular demolition kit - ANSWER- 25' long hose charge, designed for depths up to 50'.
40lb Cratering charge (ammonium nitrate) - ANSWER- Low velocity for moving earth.
40 lb Cratering charge (H6 explosive) - ANSWER- High velocity for destruction of
buildings.
MK 19 MOD 0 - ANSWER- Used to increase the effectiveness of bubble charge, delay
of 52 (+/- 15) milliseconds
True/False Shaped charges require MORE explosive material. - ANSWER- False,
require less.
What is OPTIMUM STANDOFF relating to shape charges? - ANSWER- Distance
between the base of the cone and the target, which allows the jet to form.
MK 20 MOD 0 Cable Cutter - ANSWER- Designed for depths of 60' will cut 1" plow steel
rope.
MK3 MOD 1 Cable cutter - ANSWER- Designed to cut up to 1" plow wire rope up to
150'
MK 1 MOD 1 cable cutter - ANSWER- Must be loaded with 1 1/4 lb of C-4, cuts steel
cable up to 2" or anchor chain up to 1 1/2", effective to 60'.
Det cord is made of? - ANSWER- PETN
Det cord can be distinguished how? - ANSWER- White powder core
M1A3 priming adapter shape? - ANSWER- Circular
M1A4 priming adapter shape? - ANSWER- Hexagonal
M1 detonating cord clip does what? - ANSWER- Connects det cord to a blasting cap.
M8 blasting cap holder - ANSWER- Holds cap to a sheet of explosive.
M1 blasting cap holder - ANSWER- Holds cap to a charge.
Ensure that a request to utilize SSTC Beach has been submitted and coordinated via? -
ANSWER- SSTC Scheduling
And Answers Verified 100% Correct
What is a galvanometer used for? - ANSWER- To test continuity of firing wire and
electric blasting caps.
(TRUE/FALSE) Any kind of battery can be used in a galvanometer? - ANSWER- False,
only silver chloride dry cell batteries can be used.
What is the purpose of a firing wire? - ANSWER- Used to connect one or more
explosive items for electrical firing to a blasting machine.
When will a firing wire be tested? - ANSWER- While on the reel, retested after it is laid
out, and tested again prior to firing.
What is double conductor heavy-duty cable made of? - ANSWER- Steel and Copper
What is double-conductor lightweight wire made of? - ANSWER- Bronze and copper.
RL 39B - ANSWER- Firing wire reel
Firing wire reel can hold... - ANSWER- 500' heavy-duty, 1,000 lightweight firing wire.
M32 - ANSWER- Ten cap blasting machine.
M34 - ANSWER- Fifty cap blasting machine.
How deep are the M32, and M34 waterproof to? - ANSWER- 3 feet
How deep can MK1 MOD1 be taken? - ANSWER- Waterproof up to 60' and may be
transported to 240'
Capacity of CD 450-4J? - ANSWER- 65 caps
Power of CD450-4J? - ANSWER- 450 volts, 130 ohms.
CD450-4J is powered by a 9 volt battery, how many charge fire cycles is it good for? -
ANSWER- 350 Charge cycles
(TRUE/FALSE) M6/MK11 electric blasting caps are not waterproof. - ANSWER- False
,TRUE/FALSE MK11 is a HERO safe blasting cap. - ANSWER- True
MK 663 MOD 0 blasting cap container holds up to ___ blasting caps. - ANSWER- 10
True/False If one cap in a series circuit is bad the rest of the caps will still detonate. -
ANSWER- False, if ones bad, the series doesn't work.
Amps required to fire a series circuit? - ANSWER- 1.5 amps regardless
Amps required to fire a parallel circuit? - ANSWER- 0.6 amps per cap.
Wait before investigating electrical misfire? - ANSWER- 30 minutes
M81 - ANSWER- Fuse iginiter
3 assemblies of the M81? - ANSWER- Primer base, fuse holder, firing pin.
Average burn rate of time fuse? - ANSWER- 36-44 seconds per foot.
Time fuse is distinguished from detonating cord by... - ANSWER- It's black powder core.
What is the M2 crimped used for? - ANSWER- To cut time fuse and det cord.
How long must you wait to investigate non-electric misfire? - ANSWER- 60 minutes
What type of initiating is the MK55,MK23 MOD 0, MK24 MOD 0, MK25 MOD 0 and
MK54 used for? - ANSWER- Shock tube/ NONEL
How long must you wait to investigate a shock tube initiated misfire? - ANSWER- 30
minutes
M112 Demolition charge (C-4) - ANSWER- 1 1/4 lb C-4 packed in a Mylar-film wrapper.
M118 Demolition charge - ANSWER- Four 1/2 lb sheets of PETN or RDX.
Roll demolition charge - ANSWER- 50 foot roll of M118.
MK140 MOD 0 Flexible charge - ANSWER- 20 gram PETN tubular charge 3' long.
Military dynamite - ANSWER- 1/2 lb of 75% RDX/ 25% TNT
, TNT water resistance? - ANSWER- Excellent
Tubular demolition kit - ANSWER- 25' long hose charge, designed for depths up to 50'.
40lb Cratering charge (ammonium nitrate) - ANSWER- Low velocity for moving earth.
40 lb Cratering charge (H6 explosive) - ANSWER- High velocity for destruction of
buildings.
MK 19 MOD 0 - ANSWER- Used to increase the effectiveness of bubble charge, delay
of 52 (+/- 15) milliseconds
True/False Shaped charges require MORE explosive material. - ANSWER- False,
require less.
What is OPTIMUM STANDOFF relating to shape charges? - ANSWER- Distance
between the base of the cone and the target, which allows the jet to form.
MK 20 MOD 0 Cable Cutter - ANSWER- Designed for depths of 60' will cut 1" plow steel
rope.
MK3 MOD 1 Cable cutter - ANSWER- Designed to cut up to 1" plow wire rope up to
150'
MK 1 MOD 1 cable cutter - ANSWER- Must be loaded with 1 1/4 lb of C-4, cuts steel
cable up to 2" or anchor chain up to 1 1/2", effective to 60'.
Det cord is made of? - ANSWER- PETN
Det cord can be distinguished how? - ANSWER- White powder core
M1A3 priming adapter shape? - ANSWER- Circular
M1A4 priming adapter shape? - ANSWER- Hexagonal
M1 detonating cord clip does what? - ANSWER- Connects det cord to a blasting cap.
M8 blasting cap holder - ANSWER- Holds cap to a sheet of explosive.
M1 blasting cap holder - ANSWER- Holds cap to a charge.
Ensure that a request to utilize SSTC Beach has been submitted and coordinated via? -
ANSWER- SSTC Scheduling
