Chapter 1 - Safety Warnings
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MNL000294.doc
Revision 2
09/16/2016
Source System TE11
© Versum Materials, Inc. as of the revision and date shown. All rights reserved.
Confidential and Proprietary Data
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Responsibility
Appropriate employees shall be instructed in the safety significance of the lockout (or tagout)
procedure (Name(s)/Job title(s) of employees authorized to lockout or tagout). Each new or transferred
affected employee and other employees whose work operations are or may be in the area shall be
instructed in the purpose and use of the lockout or tagout procedure (Name(s)/Job title(s) of affected
employees and how to notify).
Preparation for Lockout or Tagout
Make a survey to locate and identify all isolating devices to be certain which switch(s), valve(s) or
other energy isolating devices apply to the equipment to be locked or tagged out. More than one energy
source (electrical, mechanical, or others) may be involved. (Type(s) of energy isolating means).
Sequence of Lockout or Tagout System Procedure
1. Notify all affected employees that a lockout or tagout system is going to be utilized and the reason
therefore. The authorized employee shall know the type and magnitude of energy that the machine
or equipment utilizes and shall understand the hazards thereof.
2. If the machine or equipment is operating, shut it down by the normal stopping procedure (depress
stop button, open toggle switch, etc.).
3. Operate the switch, valve, or other energy isolating device(s) so that the equipment is isolated from
its energy source(s). Stored energy (such as that in springs, elevated machine members, rotating
flywheels, hydraulic systems, and air, gas, steam or water pressure, etc.) must be dissipated or
restrained by methods such as repositioning, blocking, bleeding down, etc. (Type(s) of stored
energy methods to dissipate or restrain).
4. Lockout and/or tagout the energy isolating devices with assigned individual lock(s) or tag(s)
(Method(s) selected, i.e., locks, tags, additional safety measures, etc.)
5. After ensuring that no personnel are exposed, and as a check on having disconnected the energy
sources, operate the push button or other normal operating controls to make certain the equipment
will not operate (Type(s) of equipment checked to ensure disconnections).
Return operating control(s) to neutral or off
position after the test.
6. The equipment is now locked or tagged out.