Siemens SINAMICS S150 NEMA, Operating Instructions Manual, Page: 21 / 862

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Operating Instructions, 12/2018, A5E36652151A
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Safety instructions
1
1.1 General safety instructions
DANGER
Lockout/Tagout is designed for your safety
Lockout/Tagout is a safety procedure that neutralizes and secures hazardous energy in a
machine, device, or system so that employees can work on it safely. Lockout/Tagout rules
and procedures are found in OSHA regulation - 29 CFR 1910.147 - The Control of
Hazardous Energy (Lockout/Tagout). You can read the regulation on the OSHA website:
http://www.osha.gov.
These are the 6 steps for accomplishing lockout/tagout
1.
Prepare for shutdown
This includes notifying team members who will be affected by the procedure.
2. Shut down the machine
This may involve reviewing the procedure to make sure that it was done correctly.
3. Identify all the hazardous energy sources
Electricity is just one source. Be sure to identify "hidden" sources of energy, these may
be residual energy or stored energy sources.
4. Isolate or neutralize all hazardous energy sources
This includes closing switches, grounding or short-circuiting, closing valves, and other
actions.
5. Lock the energy sources
This is usually done at the same time you perform step 4. Be sure to neutralize the
residual energy and stored energy sources.
6. Verify your lockout procedure
Make sure that the machine is completely locked out…and that you have the right
machine!