BC Shiftboss EXAM COMPLETE NEWEST QUESTIONS AND VERIFIED SOLUTIONS LATEST UPDATE THIS YEAR

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BC Shiftboss EXAM COMPLETE NEWEST QUESTIONS

AND VERIFIED SOLUTIONS LATEST UPDATE THIS

YEAR




QUESTION: "What is a "Nonel" assembly?" - ANSWER-A plastic shock tube coated inside with

finely powdered explosive and securely crimped to a high strength (12 grain PETN) non-electric

delay detonator.




QUESTION: "Can a "Nonel" cap be used to detonate all types of explosives that are cap

sensitive?" - ANSWER-Yes, the shock tube will not disturb any column of powder as the shock

tube does not explode.




QUESTION: "How would you hook up "Nonel" caps?" - ANSWER-Hook up Nonel to a b-line trunk

line pulling excess tubing through the plastic connector, then attach a cap to b-line trunk line

and blast.




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QUESTION: "Would you trim off excess Nonel tubing?" - ANSWER-No, each Nonel is a sealed

unit. One end of the tube is sealed by means of heat seals, the other end by the detonator. If

excess tubing is cut off moisture may enter and cause malfunction.




QUESTION: "Can Nonels be used in areas of possible stray current?" - ANSWER-Yes, Nonels are

not a conductor of electricity.




QUESTION: "What is the recommended exposure time for a Nonel detonator assembly in n

explosive that uses fuel oil as a component?" - ANSWER-6 days (15 days for Nonel XT)




QUESTION: "How should a blasting cap be attached to a detonator cord such as primacord?" -

ANSWER-It should be taped into position and the end of the cap must be positioned with the

base of the cap pointing in the direction of initiation.




QUESTION: "How should a blasting cap be attached to a procore primer or other high strength

cast primer?" - ANSWER-The end of the cap should be positioned within the primer, pointed in

the direction of the main charge.



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QUESTION: "What is the detonation velocity of detonating cord?" - ANSWER-~22,000f/s or

6,075m/s




QUESTION: "Can detonating cord be lit with a match?" - ANSWER-Detonating cord cannot be lit

with a match.




QUESTION: "What is the chemical composition of the explosive used in detonating cord?" -

ANSWER-Pentaerythritol tetranitrate.




QUESTION: "How is the explosive strength of detonating cord usually expressed?" - ANSWER-In

grams of PETN per meter of foot of cord.




QUESTION: "What is a detonating connector relay?" - ANSWER-A detonating connector relay is

a nonelectric device which provides a short interval delay in a detonation cord circuit. It is also

known as a delay connector, MS connector, or a relay.




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QUESTION: "How is a pigtail detonating connector attached to detonating cord?" - ANSWER-By

a square knot or by taping together, with 4 overlap."




Does the mixing of ammonium nitrate and fuel oil to form an explosive require any legal

approval? - ANSWER-Yes, only if the user has received written approval of the Chief Inspector

of Explosives




QUESTION: "What three methods may be used to destroy AN/FO explosives?" - ANSWER-"-By

emptying the containers into a large body of stagnant water


-By emptying them into a pit and pouring water of them


-By scattering them on the ground and then covering them with dirt.




QUESTION: ""How is primacord destroyed?""" - ANSWER-The preferred method is by burning in

the same manner as dynamite. It must not be burned on the spool, but strung out in parallel

lines at least 1cm apart.




QUESTION: "What is primacord?" - ANSWER-It is detonating cord consisting of high explosive

core contained in a waterproof textile covering.


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