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DigiShot plus.4G - Page 243

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UTM-00339 | Rev 19
Page 243 of 253
DetNet South Africa Copyright © 2021
This section provides some practical tips and hints based on previous on-bench experience to assist new users
with their learning and ensure a successful deployment of the system on the bench. This document must not be
regarded as a replacement for Training manuals or Quick Guides but rather as supplementary to other
documentation. To ensure that this document remains useful, receiving feedback and suggestions from DetNet
Channel partners and end users is important.
LOCAL MINE, EXPLOSIVES OR STATUTORY REGULATIONS, PROCEDURES, OR CODES OF PRACTISE
REGARDING SAFETY TAKE PRECEDENCE OVER ANY OF THE TIPS AND HINTS DESCRIBED IN THIS DOCUMENT.
THE MOST STRINGENT SET OF RULES BETWEEN THE MINE, EXPLOSIVES OR LOCAL
REGULATIONS/PROCEDURES/CODES OF PRACTISE AND THE MANUFACTURER MUST BE FOLLOWED.
Refer to https://portal.detnet.com/http://www.portal.detnet.com/ for additional detail on Quick Guides, Channel
Leakage and other documents of interest.
When boxes of DigiShot
®
Plus 4G Detonators are delivered, ensure to place boxes at a point of safety to prevent
on-bench vehicles from driving over the boxes and damaging detonators.
IT IS IMPORTANT TO NOTE THAT ALL DETONATORS ARE IMPACT SENSITIVE AND CAN INITIATE IF EXPOSED
TO EXCESSIVE MECHANICAL IMPACT.
When distributing detonators on the bench the following points are important:
Ensure that all connectors are properly closed to prevent ingress of moisture and/or dirt when placing
detonators at holes to be primed.
Place detonators in line with the direction of drilled holes to minimise people treading or vehicles driving
over detonator coils. Place coiled detonators far enough from the hole collar to prevent detonators rolling
down drilled holes.
If different lengths are used for decking purposes, then place coils in the sequence of charging to reduce
time and minimise confusion for the charging crew.
During priming (inserting the detonator into a booster) the following points are important:
When removing the detonator from the coil ensure that it is removed from the opposite end of the
connector to prevent tangling of the down-line wire.
Pull out sufficient length to thread the detonator through the booster to be left with approximately 300mm of
down-line wire between booster and coil.
Remove helix by gently pulling the cable between thumb and forefinger to prevent inner cores from taking
on different orientations. This could exert unnecessary tension on the crimp area.
Thread the detonator through the booster and ensure it is properly seated.
Pull on the incoming cable to ensure that the down-line wire is tightly placed and properly seated in the
booster saddle. Check to ensure that it is not kinked or damaged when the booster is lowered down the
hole.
Place primed detonator in a safe place to minimise the chance of treading on the primer and ensure that
the connector is still in the closed position.