Chapter 1 - Safety Warnings
_______________________________________________________________________________________________________________
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
Page
1
-
22
1.10.8 Electrical Hazards
Electric shock could cause personal injury
or death.
The control circuits for the system use 115/220 VAC, 50/60 Hz. Do not attempt to work on the system
without first turning the power off and tagging out and locking out the electrical supply disconnect
switch per plant lock out procedures.
Follow the Typical Minimal Lockout or Tagout System
Procedures described by Occupational Safety and Health Admin., Labor Para. 1910.147 found in
Chapter 1 Section 11 of this manual.
1.10.9 Purge Gas Backstream Hazard
Avoid low pressure condition in purge gas
cylinder to prevent a backstream hazard.
The purge gas system incorporates a pressure indicating gage which will provide the means of
displaying a low purge gas cylinder pressure condition (usually 200 psig [14 barg] minimum). The
cylinder should be changed out at this point to prevent process gas from backstreaming into the purge
gas cylinder.
1.11 Typical Minimal Lockout or Tagout System Procedures
NOTE: The following OSHA document is included to help you develop a lockout/tagout procedure
for the GASGUARD® System. A written procedure is required for any work performed under
lockout/tagout. It must be reviewed, approved and understood by all participants who are trained to
perform the work.
(Occupational Safety and Health Admin., Labor Para. 1910.147)
Although OSHA does not have jurisdiction outside the United States of America, it is Versum
Materials, Inc. recommendation that Lockout, or Tagout procedures be followed, except where local
laws are more stringent.
General
Lockout is the preferred method of isolating machines or equipment from energy sources. To assist
employers in developing a procedure which meets the requirements of the standard, the following