BC Shiftboss TEST ACTUAL EXAM ALL 500 QUESTIONS AND CORRECT ANSWERS LATEST UPDATE THIS YEAR

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BC Shiftboss TEST ACTUAL EXAM ALL 500
QUESTIONS AND CORRECT ANSWERS LATEST
UPDATE THIS YEAR


QUESTION: "Are a plastic connector and a plastic detonating connector the same thing?" -

ANSWER-No, a plastic connector is used to connect downlines to trunks. It does not contain

explosives and should not be confused with a plastic detonating connector.




QUESTION: "What length of overlap is recommended when taping 2 lengths of detonating cord

together with electricians tape?" - ANSWER-4 inches (10cm).




QUESTION: "What type of detonator is recommended to be used to initiate detonating cord?" -

ANSWER-A High Strength" detonator."




QUESTION: "How should the detonator be oriented when taped to detonating cord?" -

ANSWER-The base end of the detonator should be taped pointing in the direction of the

initiation or shock wave path.




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QUESTION: "How should detonator cord be unreeled?" - ANSWER-By using a handheld rod or

stand.




QUESTION: "What are 2 kinds of non-electric detonating delay systems?" - ANSWER-"A) Nonel

system


B) Cordline system




QUESTION: ""There 2 types of detonating systems, name them and indicate the difference

between the them.""" - ANSWER-"A) The Nonel system may be used with cap sensitive

explosives.


B) The Cordline system can only be used with insensitive explosives such as ANFO or slurry

blasting agent. Cordline is a low strength detonating cord having an inner core of PETN, it can

side initiate sensitive explosives. Manufactured under the name ANOLINE"".""




QUESTION: ""What is a Nonel assembly?""" - ANSWER-A assembly is a non-electric detonator

factory crimped to a length of Nonel shock tube. It has a plastic connector for clipping onto a

trunkline of detonating cord. The assembly is a sealed unit and must not be cut to shorten the

tubing.




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QUESTION: "How is a shocktube of a Nonel detonator constructed?" - ANSWER-The shock tube

is a hollow plastic tube lined with finely powdered explosives, when properly initiated it

propagates a shock wave to the detonator causing it to explode.




QUESTION: "What is the velocity of propagation in the Nonel shock tube?" - ANSWER-2,000m/s

or 6,560f/s




QUESTION: "What is the important feature of the Nonel assembly in blasting?" - ANSWER-The

tube remains intact during propagation and therefor has no effect on explosives in contact with

it. Thus, the Nonel assembly can be used with any explosive regardless of sensitivity.




QUESTION: "What are 2 types of Nonel tubing available and what are their respective uses?" -

ANSWER-"A) Plain - for general application


B) XT - very durable and intended for deep holes and adverse conditions.




QUESTION: ""How must Nonel tubing be stored?""" - ANSWER-Sealed, dry, and

uncontaminated.



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QUESTION: "Is Nonel tubing impervious to oil in ANFO?" - ANSWER-No, fuel oil can penetrate

the plastic tubing. Tubing must not be exposed to ANFO or other oil containing explosives in a

loaded hole for a period exceeding 6 days (15 days for Nonel XT).




QUESTION: "Is there a hazard in holding or being in close proximity to Nonel tubing when it is

initiated?" - ANSWER-Yes, a flaw in the manufacturing or damage to the tubing could cause

serious injury.




Q; 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.




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