In 2017 the Minnesota Department of Agriculture (MDA):
Serious and common violations documented in 2017 are listed below. The MDA recommends that self-inspections be conducted, and correction be made of all non-compliance items.
Failing to immediately report an incident.
Safety water of sufficient quantity and accessibility not provided during NH3 handling or maintenance.
NH3 rated gloves and goggles not available and worn for NH3 handling or maintenance.
Failure to bleed off NH3 prior to connecting/disconnecting hoses/piping, resulting in exposure or injury.
Not having required safety items at the permitted storage facility site.
At a minimum, the following safety items must be at the permitted NH3 storage facility site:
All main tank and riser hose end valves not closed and locked when the facility is unattended.
Five (5) gallon safety water tank/hosing:
Each nurse tank must be equipped with at least five gallons of clean water in a container that is designed to provide ready access to the water for flushing any area of the body contacted by ammonia.
Nurse tanks are not properly anchored.
Each bolt/washer/nut assembly must be tight (does not move), securely anchoring nurse tank to running gear. Maintain the running gear frame free of defects.
Riser shut-off/excess flow valve installed/used in nurse tanks.
Replace/install shut-off/excess flow valves specified by the manufacturer for installation/use in nurse tanks.
Dual nurse tank assemblies: Additional flow protection (i.e. excess flow valve-EFV or back check flow valve-BCFV) not installed in merged liquid withdrawal, liquid fill, and vapor fill connections.
For merged connections, install an additional EFV:
Hydrostatic Relief Valves (HRVs):
Install 350-400 psi NH3 rated HRVs equipped with a rain cap:
Keep IRP at a principal business site or location within the state.