Hazards of evacuating NH3 from the process
On February 7, 2017, an employee, 50, was making preparations to replace the relief valve of a 1,000-gallon ammonia (NH3) tank. The incident investigation reported that the tank was empty of liquid NH3. However, it contained approximately 80 psi of vapor pressure. The employee set up a 30-gallon drum that contained water and affixed it…...
