14
P-R-O-P-E-R HYDRAULIC AND/OR
PNEUMATIC LOCK-OUT
P Process Shut Down
Shut down process using recommended procedures.
R Recognize Energy Type
Recognize all sources of energy – the electric that powers the pumps or compressors, and the air or
hydraulic valves themselves.
O Off! -Shut off all Power Controls
Shut off each energy type.
P Place Lock-Out Device, Lock and Tag
The shape or location on some valves may be difficult to lock out. If there is not a specific lock
out tag out procedure in place you should ask your supervisor.
E Energy - Release Stored Energy
Bleed the stored energy by bleeding the air line and draining the compressor, or by using other
prescribed methods. Keep in mind that when bleeding stored energy it could cause some parts of
the equipment to move, as it is being held by the stored energy.
R Recheck Controls and Return To “OFF” Setting
Return controls to proper settings.
P-R-O-P-E-R FLUIDS AND GASES LOCK-OUT
P Process Shut Down
Shut down process using recommended procedures.
R Recognize Energy Type
Recognize the material and its hazards. If material is hazardous, use the proper protective
equipment. Even water can become a hazardous fluid under high pressure.
O Off! -Shut off all Isolating Valves
If a job requires breaking in to a line close off isolating device, blanking if necessary. Some valves
may be difficult to lock out. A locking bar or chains may be needed. Check with supervisor.
P Place Lock-Out Device, Lock and Tag
Sign tag.
E Energy - Release Stored Energy
Release pressure and drain to achieve zero energy state.
R Recheck Controls and Return “OFF” Setting
Recheck line and test properly and make sure you have zero energy state.
