Befähigungsprüfung Sprengungsunternehmen Practice Questions - Befähigungsprüfung Sprengungsunternehmen (Austria) Exam

A negative balance produces excess nitrogen oxides; a positive balance produces carbon monoxide. A negative balance raises detonation velocity beyond 8,000 m/s; a positive balance reduces it below 1,000 m/s. Oxygen balance affects only brisance and has no influence on fume composition. A negative oxygen balance (fuel-rich) generates lethal Carbon Monoxide (CO) gas, whereas a positive oxygen balance (oxidizer-rich) generates highly toxic Nitrogen Oxides (NOx / nitrous fumes).