Chapter 8 - Operating Procedures
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MNL000302.doc
Revision 2
01/04/2019
SourceSystemTE11
© Versum Materials, Inc. as of the revision and date shown. All rights reserved.
Confidential and Proprietary Data
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If a 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.
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.
3.
Check that the cylinder valve is tightly closed.
4.
Slowly remove valve outlet plug/cap on the cylinder. Listen and observe for any sign of
leakage. If you notice leakage, immediately retighten cap, close the cabinet door and evacuate
the area. Follow established emergency response procedures. Cylinders with valve leaks are
defective and should be returned to supplier.
5.
Check valve outlet area for contamination and damage. Do not attempt to use a gas cylinder
with a damaged or contaminated valve outlet. Tag the cylinder as "FAULTY", and obtain
another cylinder.
6. Position cylinder so that the valve outlet lines up with the pigtail cylinder connection and
tighten cylinder strap.
Do not rotate cylinder by holding cylinder
valve handle. This may open the cylinder
valve and cause a high pressure gas leak
which could result in personal injury or
death.
7. Remove pigtail cap/plug from pigtail connection.
8. Install new washer on those cylinder connections that require washers.
9. Thread pigtail cylinder nut hand tight into/onto clean undamaged cylinder valve outlet noting
proper direction of rotation. Be careful not to cross thread connections.
10. Tighten nut using proper wrench. Be sure to support pigtail. Do not apply excessive torque.
Refer to CGA Technical Bulletins located in Appendix for recommended torque of cylinder
connection.
11.
Close encloure door.
12. The system is now ready for post purge cycles.