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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Do not use a wrench or other device to close diaphragm type cylinder valves. This could
cause diaphragm rupture and valve failure which
could result in personal injury or death.
Contact your gas supplier for the maximum torque (ft./lbs. or N/m) allowed on diaphragm
type cylinder valves. Certain gases are supplied with cylinder valves without handwheels.
Use
only
the tool specified by your gas supplier to open and close diaphragm type cylinder
valves to avoid over torquing these valves.
If a cylinder valve protection cap is extremely difficult to remove, do not apply excessive
force or pry the cap loose. Attach a label to the cylinder identifying the problem and notify
the personnel responsible for returning cylinders about the defective cylinder. Obtain
another cylinder. Do not attempt to open a frozen cap as this would damage the cylinder
valve and
could result in personal injury or death.
Do not rotate the cylinder using the cylinder valve handle. This may open the cylinder valve
and cause a high pressure gas leak.
NEVER
replace the gas specified for use in the source system with another type of gas
cylinder. Incompatible gases could cause fires, explosions or extremely corrosive or toxic
mixtures which can
cause personal injury or death.
If another type of gas is required for
use in the gas source system, contact Versum Materials, Inc. immediately.
A valve outlet sealing cap
must
be supplied on all toxic, corrosive and pyrophoric gases.
Consult your gas supplier if there is no sealing cap on any of the above types of gas
cylinders.
Cylinder valves are available with removable flow restrictor orifices in the valve outlet for
use with gas cylinders. This flow restrictor orifice significantly limits the rate of release of
gas from the valve outlet during transportation, storage and use, due to a valve or system
failure. Verify that your gases are supplied in cylinders with valves that have the
appropriate flow restrictor orifice. Note that there are different size flow restrictor orifices
available. Verify that the correct size is being used for your specific situation. A quality
control program should be established to assure that your supplier has installed the correct
flow restrictor orifice in the valve outlet after the filling operation has been completed.