Great Plains NH3 Safety User Manual
Page 38
34
NH
3
Safety
Great Plains Manufacturing, Inc.
407-551M
2013-07-15
11. Opening this bleed valve WILL release the
substantial amount of liquid NH
3
presently trapped in
the hose, most likely as a spray. Open the valve very
slowly, just until some fluid appears. Leave the valve
just slightly open.
12. Walk away, up-wind. Stay away until the release
concludes. Carefully open bleed valve completely to
confirm hose is discharged. For dual-cooler, repeat
step 9 through step 12 for the other hose.
13. Close all breakaway bleed
valves (
and
{page 42}), and any nurse tank
hose valves
(page 13). Disconnect the nurse
tank half of the breakaway coupler at the Acme
coupler
(page 11).
14. Correct the cause of breakaway, only if trivial to do in
the field.
15. Consult the breakaway manual for re-coupling
instructions.
Before Re-connection: Elevated Exposure Hazard:
Exercise extreme care. Even if the nurse tank is undamaged,
sound and upright, a breakaway event is not a normal re-hitch
situation. A substantial NH
3
bleed is required that WILL
release a flow of liquid anhydrous ammonia under pressure.
If the wind is calm or light, do not attempt to bleed the nurse
tank hose. Your field PPE
a
is not sufficient.
a. PPE: Personal Protective Equipment
A13
A16
A61
A58