The stemming SBP is delivered in its original packaging to the place of work. During transportation, loading and unloading of the stemming SBP, measures should be taken to prevent damage to the packaging material and moisture ingress onto it.
The procedure for filling boreholes with a stemming SBP is as follows:
Filling a borehole with a stemming SBP is performed manually after placing a charge of explosives and detonating materials in it
Take out the required amount of the stemming SBP from the plastic bag, pay attention to prevent moisture ingress into the rest of the product
Visually check the shell integrity
Then, without allowing the mixture to spill out, send the stemming SBP to the explosive charge
Upon solidification, the stemming expands, attaches to the inner surface of the borehole and ensures that the products of the explosion are trapped in the hole
After soaking the stemming SBP for the required amount of time (depends on the type of stemming), remove and make a lengthwise cut not less than 1/3 of the stemming's length
Dowse the stemming SBP into the container with water until full-immersion. Avoid kinks
Carefully seal (tamp) the stemming SBP with the tamping pole. In this case, the electrical wire, detonating cord and waveguides must have a slack. The tamping pole must be made of a material that does not give off sparks, and the length must be greater than the depth of the hole
Visually assess the wetting of the mixture with water inside the stemming SBP. If the mixture inside the stemming is not fully moistened, then it is allowed to soak the stemming SBP again until the dry mixture is completely wetted with water
The borehole is ready to explode.