32.12. Blasting
32.12.1.
Only electric blasting should be allowed in tunnels.
32.12.2.
Electric blasting operations in tunnels should comply
with the relevant provisions of Chapter 23.
32.12.3.
Blasting circuits should be independent of any power,
lighting or other circuit.
32.12.4.
Blasting circuits should be tested before detonators
are attached.
32. 12.5.
No other electrical circuit should be installed on the
same side of the tunnel as the blasting circuit.
32.12.6.
Before any shot is fired, all electrical circuits other
than the blasting circuit should be de-energised for an adequate
distance from the firing point.
32.12.7.
Only suitable battery lamps should be used for loading
shotholes.