Chapter - 3
MNL000442.doc
Revision 00
09/19/2016
© Versum Materials, Inc. as of the revision and date shown. All rights reserved.
Confidential and Proprietary Data
Page
-
21
No ESI
< 0.007
120
-1
0.05
349
0.26
1783
200
248
None
ESI
< 0.007
120
-1
0.2
214
0.55
1095
180
216
33%
ESI
< 0.007
120
-1.5
0.2
270
0.94
1380
180
200
None
Notes
:
[1
] ERC (Expected Release Concentration) values are taken from actual test data.
[2] ESI (Ex
hau
st Stack Insert) may have been specified by the customer to enhance the readability
of the exhaust pressure monitor. Refer to the system’s Specification Sheet to determine if this
option is used.
[3] These exhaust flow values are applicable to the 30 inch and 24 inch standard flow Gasguard
VMB enclosures.
[4] All standard Gasguard enclosures are sized for a 6 inch outer diameter (OD) duct connection to
the vent stack.
[5] “Access Hatch Closed” values have been measured, or calculated at the exhaust stack duct.
[6] The actual values presented in "Access Port Open" are from experiments done on a two-
cylinder source system enclosure. Due to the similar design and smaller access port of the
VMB enclosure, balancing to Tables 2 and 3 will satisfy meet or exceed NFPA face velocity
requirements.
