Final answer:
The exhaust system of an ANFO blending truck must be installed to prevent ignition, involving directional venting away from the cargo, heat shielding or insulation of exhaust pipes, and grounding of potential static or electrical discharges.
Step-by-step explanation:
The exhaust system for a bulk truck, mix truck, or ANFO blending truck must be installed with careful consideration to prevent ignition of the explosive compounds such as ammonium nitrate/fuel oil (ANFO). Firstly, the exhaust system must be directed away from the cargo area to reduce the risk of exhaust heat or sparks coming into contact with the ANFO. Secondly, the exhaust pipes should be insulated or shielded to further minimize the possibility of heat transfer. Thirdly, any potential sources of static or electrical discharge near the exhaust system should be properly grounded to prevent accidental ignition of the explosive materials.