ML20149E960
| ML20149E960 | |
| Person / Time | |
|---|---|
| Site: | Point Beach  |
| Issue date: | 02/05/1988 |
| From: | Harrison J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Fay C WISCONSIN ELECTRIC POWER CO. |
| References | |
| NUDOCS 8802110327 | |
| Download: ML20149E960 (1) | |
See also: IR 05000266/1987007
Text
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FEB 5 1988
Docket.No. 50-266
Docket No. 50-301
. Wisconsin Electric-Power Company
ATTN: Mr. C. W.-Fay
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Vice President
"
Nuclear Power Department
,
231 West Michigan, Room 308
Milwaukee, WI 53201
Gentlemen:
Thank you for your letter dated January 13, 1988, informing us of the steps
you have taken to address Open Item (266/87007-06; 301/87007-06) which was
discussed in our report 50-266/87007; 50-301/87007, dated July 7, 1987.
We have reviewed your submittal and have no questions at this time. This item
will be further reviewed during a future inspection at your facility.
Sincerely,
i
- gc,,1 Sig,d 17 U. U* IDI
~
J. J. Harrison, Chief
Engineering Branch
cc:
J. J. Zach, Plant Manager
cc w/ltr dtd 1/13/88:
DCD/DCB (RIDS)
Licensing Fee Management Branch
,
Resident Inspector, RIII
i
Virgil Kanable, Chief
Boiler Section
Charles Thompson, Chairman
1
Wisconsin Public Service
Comission
R. I. Braund (SLO),
WI Div of Emergency Government
Lawrence J. McDonnell, Chief
Radiation Protection Section
l
WI Department of Health and
Social Services, Division
of Health
IIg
III
R
mes/j(
Gardier
rison
02/04/88
02/Cr/88
02/05/88
i
8802110327 080205
ADOCK 05000266
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Wisconsin Electnc ma cwmr
231 W MICHIGAN,P.o BOX 2046, MILWAUKEE.W153201
(414)2M 2345
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VPNPD-88-022
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January 13, 1988
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U. S. NUCLEAR REGULATORY COMMISSION
Document Control Desk
Washington, D.
C.
205ss
Gentlemen:
h
DOCKETS 50-266 AND 50-301
TECHNICAL EVALUATION OF FIRE DAMPER TESTS
POINT BEACH NUCLEAR PLANTS, UNITS 1 AND 2
In response to Inspection Report 50-266/87007(DRS);
50-301-87007(DRS), which we received with your letter dated
July 7, 1987, we are providing our Technical Evaluation of Fire
Damper Tests at Point Beach Nuclear Plant.
During development of the Technical Evaluation, we determined
that a damper closure verification test would be required.
Preparation of a test procedure and scheduling of the test so
as not to interfere with the Fall 1987 outage manpower
requirements delayed our verification of the Technical
Evaluation and submittal for Region III review.
We believe that our submittal of the enclosed Technical
Evaluation fulfills our commitment for open item
(266/87007-06;301/87007-06), Paragraph 3.e of the Inspection
Report.
Please contact us if you have any questions regarding this
submittal.
,
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Very truly
ours,
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860h%
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C. W.
Fay
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Vice President
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Nuclear Power
Attachments
Copies to NRC Resident Inspector
NRC Regional Administrator - Region III
'JAN 191988
h ; C ! M O W M jPt
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4
i.
TECHNICAL EVALUATION
OF
FIRE DAMPER TESTS
AT
POINT BEACH NUCLEAR PLANT
-
1.0 INTRODUCTION
During routine safety inspections between February 23 and June 26, 1987,
the inspector requested that the licensee provide justification regarding
the test methodology utilized to demonstrate that fire dampers will close
.
under normal air flow.
Provision of the requested justification was
identified as open item 266/87007-06; 301/87007-06 in the July 7, 1987
.
inspection report.
This Technical Evaluation is prepared in response to
the inspector's request.
S
2.0 PURPOSE
.
The purpose of this evaluation is to demonstrate that the methodology
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used to test fire damper closure under normal air flow provides adequate
assurance that the dampers will function as required to maintain fire
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3.0 SCOPE
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The PBNP Fire Damper Summary is a list of fire dampers which are located
in the boundaries of fire areas containing Appendix R safe shutdown
i
components.
This evaluation covers fire dampers which are identified in
.
\\
the summary as' having been tested under normal air flow conditions.
The
,'
"
summary is attached as Table FD-1.
.
4.0 BASIS
In a previous evaluation we determined that it was not practical to
expect large multisection dampers to close against normal air flow.
Multisection dampers have been tested statically and a Standing Order
has been issued for PBNP operators to shut down ventilation for the
affected zone if a fire is detected in fire zones separated by such
The Fire Damper Test Guidelines dated 03-04-86 were used to test fire
dampers under normal air flow. The guidelines are intended to be
generic and do not describe a standard test configuration with specific
dimensional tolerances.
However, we believe that a sufficient quantity
of dampers were tested in a conservative air flow configuration to
demonstrate that the dampers will operate as intended.
l
A fire damper is tested one time under normal air flow conditions for
design verification.
The initial normal air flow test was conducted on
dampers which have been in service between 0 and 17 years without any
noticed effect from aging.
Ten percent of the fire dampers listed in
Table FD-1 will be tested statically every 18 months to provide continued
damper operability.
Should more than 15% of the dampers tested fail to
close, an additional 10% of the listed dampers shall be tested until the
quantity of failed dampers is less than 15% of the quantity tested.
An
a
engineering review shall also be conducted to evaluate the reasons for
!
damper failure.
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5.0 EVALUATION
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5.1 Installed Configurations
The relative location of components in a ventilation system can
affect the outcome of fire damper testing. The components to be
considered are the fan, fire damper, inspection port and ventila-
tion grill.
By reviewing fire dampers installed at PBNP, we have
determined that seven types of installed configurations exist.
These configurations are shown on Figure FD-1.
5.2 Flow Characteristics
We have evaluated the flow characteristics for each fire damper
which is expected to close under normal air flow conditions. These
characteristics are listed in Table FD-2.
Since pressure drop across
the damper has the major effect on damper closure capability, we
conclude that if a damper of a given configuration has been success-
fully tested at a specific pressure drop, all dampers of the same
configuration which are subject to the same or lesser pressure drops
will also be operable under normal air flow conditions.
5.3 Other Effects
Several fire dampers have been functionally tested as part of Halon
fire suppression system discharge testing. This testing provides
,
added assurance that these dampers will function as designed. Where
.
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b
.
.
a damper which is expected to c1Cse against normal air flow is in-
stalled in a branch parallel to a multi section damper located in the
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same fire zone, the damper will operate because the fan which is
i
common to both dampers will be shutdown.
.
These effects are also identified in Table FD-2.
.
5.4 Figure FD-1 Evaluation
a) Detail (a) depicts fire dampert which are located in the fire
barrier without connecting ductwork. This configuration can be
'
tested from either side of the fire barrier without affecting air
,
flow through the damper.
Therefore we concluded that dampers
which are installed in accordance with Detail (a) and which have
been tested under normal air flow conditions are operable.
b) Detail (b) depicts fire dampers which are located in one branch
of a multibranch duct system. These fire dampers and fire dampers
which are installed in the other branches are not exposed to a
.
common fire area.
Therefore, during damper closure an air flow
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path alternate to the affected damper is assured.
During a test
an open inspection port would increase air flow through the damper
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in a conservative manner.
A successful test under this condition
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t
demonstrates damper operability.
Reaching into the duct to
actuate or observe damper closure would obstruct flow in a noncon-
servative sanner.
For this condition, flow would increase through
the alternate branch just as it would for damper closure under
,
normal air flow conditions and the effect on the total ventilation
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system performance would be negligible. Therefore, we concluded
that dampers which are installed in accordance with Detail (b) are
,
tested equivalent to normal air flow conditions and are operable.
Demper qualification by pressure drop exposure is not applicable
to Detail (b) configurations,
c) Detail (c) depicts fire dampers which are located in one branch
of a multibranch duct system. These fire dampers and fire dampers
which are installed in the other branches are not exposed to a
common fire area.
Therefore during damper closure an air flow
path alternate to the affected damper is assured. During a test
an open inspe,ction port would increase air flow through the damper
in a conservative manner.
A successful test under this condition
demonstrates damper operability Reaching into the duct to actuate
or observe damper closure would obstruct flow in a nonconservative
manner.
For this condition, flow would increase through the
alternate branch just as it would for damper closure under normal
air flow conditions and the effect on the total ventilation system
i
performance would be negligible.
Therefore, we conclude that
dampers which are installed in accordance with Detail (c) are
tested equivalent to normal air flow conditions and are operable.
Damper qualification by pressure drop exposure is not applicable
to Detail (c) configurations.
d) Detail (d) depicts fire dampers which arr 'ocated downstream of
all ventilation openings and inspectic* t
During a test an
.
,
open inspection port would increase
riU
chrough the damper
I
in a conservative manner.
A successt
ta:: under this condition
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demonstrates damper operability. ReacPing into the duct to
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actuate or observe damper closure would obstruct flow in a noncon-
servative manner. The s.'res of the duct, inspection port and
obstruction are variables which determine the conservatism of air
flow during damper testing. These variables would have to be
known and evaluated for individual damper tests in order to achieve
a positive determination.
Alternatively, we have reevaluated the
actual configuration for individual dampers which are installed
in accordance with Detail (d).
The damper and inspection port arrangement for dampers 21 and 22
is shown on Figure FD-24.
Because of the inspection port locations,
these dampers would be tested without obstructing the air flow.
Because of the right angle turn in the normal flow path and the
location of the inspection port, any opening during testing would
result in conservative additional air flow.
Therefore we conclude
that dampers 21 and 22 are operable. The arrangement for# amper
d
35 is shown on Figure FD-2b. This damper can also be tested without
obstructing the air flow.
Because of the right angle turn in the
normal flow path and the location of the inspection port, any
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opening during testing would result in conservative additional air
flow. Therefore, we conclude that damper 35 is operable,
e) Detail (e) depicts fire dampers which are located upstream of all
ventilation openings and inspection ports. During testing an
open inspection port would increase air flow through the damper
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in a conservative manner.
A successful test under this condition
demonstrates damper operability.
Reaching into the duct to
- _ - _ _ - _ - _ _ _ _ _ _ _ _ _ _ _ _ _ _ - _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
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actuate or observe closure would obstruct flow in a nonconservative
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e
manner.
The sizes of the duct, inspection port and obstruction
are variables which determine the conservatism of air flow during
'
damper testing.
These variables would have to be known and eval-
usted for individual damper tests in order to achieve a positive
'
determination.
Alternatively we have reevaluated the actual
configuration for fire dampers which are installed in accordance
with Detail (e).
,
The damper and inspection port arrangement for damper 34 is shown
,
on Figure FD-2c.
Because of the proximity of the inspection port
to the fire damper, this damper can be tested without obstructing
,
the air flow.
Therefore we concluded that damper 34 is operable,
f) Detail (f) depicts fire dampers which are located between the
inspection port and the ventilation grill upstream of the fan.
$
The inspection port is the only duct opening between the # damper
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and the fan.
An open inspection port or an obstruction in the duct
would decrease air flow through the damper in a nonconservative
Dampers 31, 32 and 33 are installed in accordance with
manner.
Detail (f).
The installed configuration is identical for these
dampers except for damper size. The configuration for damper 33
is shown on Figure FE-2d.
The purpose of these fire dampers is to
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protect the interior of the control building from an exposure fire
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on the roof.
The dampers are installed below normally closed shut-
-
off dampers which were removed for fire damper installation and
,
testing.
Testing without the normal shutoff damper resistance to
f
flow was conservative.
The fact that these dampers were tested
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with air flow was a conservative action because the design
function of these dampers is to close under a no air flow condi-
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tion.
Therefore, we concluded that dampers 31, 32 and 33 are
[
-
While this evaluation has demonstrated the operability of fire
,
dampers listed above, it does not provide justification for future
installations.
In the future, installation of fire dampers which
must close against air flow should not be installed in accordance
d
with detail (f).
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g) Detail (g) depcits fire dampers which are located between the
,
inspection port and the ventilation grill down stream from the fan.
The inspection port is the only duct opening between the fan and
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the damper.
An open inspection port or an obstruction in the duct
would decrease air flow through the damper in a nonconservative
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manner.
Dampers 11A,12A,13A,14A,15A and 16A are installed
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in accordance with detail (g). The configuration for damper 11A,
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which is exposed to the largest pressure drop requirement is shown
1
on Figure FD-2e. We have ratested this damper with the inspec-
,
tion port opening sealed except for passage of the damper trip
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wire.
The damper closed successfully. Therefore we concluded
that dampers installed in accordance with detail (g) which must
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close against an air flow pressure drop less than .264 inches of
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wcter are operable.
In the future, fire dampers which must close
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against higher air flow pressure drops should not be installed in
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accordance with detail (g).
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6.0 CONCLUSION
..
This Technical Evaluation demonstrates that fire dampers installed at
PBNP prior to January 1, 1988, which are expected to close against normal
air flow, have been tested in a manner which provides adequate assurance
that the dampers will operate as required.
Fire dampers which are
installed after January 1,1988 shall be installed in accordance with
Figures FD-2a, b or c or shall be tested in accordance with Operating
Instruction 01-88, Fire Dampers.
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TABLE FD-1
P8MP FIRE DAMPER STUDY
Install.
Penetra-
Survey
Damper Fusible
Test
Fan Off
Associated
Associated
No.
Docu.
tion No.
Dwg.
Dwg.
Rating Rating
Condition
or other
Fan
Area
1
MR 83-151
51
M-7-4-40
M-116
3 Hour
212F
Norm Air Flow
N/A
W30A&8
U1 Chg. Pump ha
2
MR 83-151
El
M-7-4-41
M-116
3 Hour
212F
Norm Air Flow
N/A
W30A&8
U1 Chg. Pump Am
3
MR 83-151
51
M-7-4-39
M-116
3 Hour
212F
Norm Air Flow
N/A
W30A&B
U1 Chg. Pump Am
4
MR 83-151
M1
M-7-4-38
M-116
3 Hour
212F
Norm Air Flow
N/A
W30A&8
U1 Chg. Pur
'Js
5
MR 83-151
N1
M-2007-6-47
M-122
3 Hour
212F
Norm Air Flow
N/A
W30A&8
U2 Chg. Pump Am
6
MR 83-151
51
M-2007-6-48
M-122
3 Hour
212F
Norm Air Flow
N/A
W30A&8
U2 Chg. Pump Am
7
MR 83-151
51
M-2007-6-49
M-122
3 Hour
212F
Norm Air Flow
N/A
W30A&8
U2 Chg. Pump Its
8
MR 83-151
51
M-2007-6-50
M-122
3 Hour
212F
Norm Air Flow
N/A
, W30A&8
U2 Chg. Pump ha
9
MR 83-151
E5
M-7-4-14
M-116
3 Hour
212F
Static
MR 86-127
IW98
PA8 El 8 Area 4
10
MR 83-151
F1
M-7-4-47
M-116
3 Hour
212F
Static
MR 86-127
IW98
PA8 El 8 Area 4
11
MR 83-151
E7
M-7-4-14
M-116
3 Hour
212F
Static
MR 86-127
IW9C
PA8 E1 8 Area 4
12
MR 83-151
M
M-5-4-1
M-116
3 Hour
212F
Static
MR 86-127
IW9C
FA8 El 8 Area 4
13
MR 83-151
E2
M-7-4-11
M-116
3 Hour
212F
Static
MR 96-127
IW90
PA8 El 8 Area 4
14
MR 83-151
F31
M-0-40
M-116
3 Hour
212F
Static
MR 86-127
IW90
PA8 El 8 Area 4
15
MR 83-151
El
M-2007-6-15
M-122
3 Hour
212F
Static
MR 86-127
2W9C
Cryogenic lha
16
MR 83-151
F1
M-2007-6-46-3 M-122
3 Hour
212F
Static
MR 86-127
2W9C
Cryogenic h
17
MR 83-151
52
M-7-4-13
M-116
3 Hour
212F
Static
MR 86-127
W30A&B
PA8 El 8 Area 4
18
MR 83-151
513
M-7-4-13
M-116
3 Hour
212F
Static
MR 86-127
W27A&B
PA8 E1 8 Area 4
19
MR 83-151
518
M-7-4-13
M-116
3 Hour
212F
Static
MR 86-127
W32
PA8 El 8 Area 4
20
MR 83-151
M-7-4-15
M-116
3 Hour
212F
Static
MR 86-127
W30A&B
PA8 El 8 Ar" 4
21
MR 83-151
N1
M-7-3-67
M-111
3 Hour
212F
Nonn Air Flow
N/A
W10A
Battery he .
22
MR 83-151
N1
M-7-3-69
M-111
3 Hour
212F
Norm Air Flow
N/A
W108
Battery Ihm
23
MR 85-015-1
M
M-5-4-1
M-116
3 Hour
165F
Static
MR 86-127
W27A&8
PA8 El 8 Area 4
24
MR 85-015-1
G
M-5-4-1
M-116
3 Hour
165F
Norm Air Flow
N/A
W27A&B
PA8 E1 8 Area 4
25
MR 85-015-1
F9
M-1-3-53
M-109
3 Hour
165F
Static
MR 86-127
W13A1&A2
HVAC Equip Am
26
MR 85-015-1
F1
M-0-39
M-110
3 Hour
165F
Static
MR 86-127
W13A1&A2
HVAC Equip Am
27
MR 85-015-1
F9
M-1-3-53
M-109
3 Hour
286
Static
MR 86-127
W13A1&A2
Control Rm
28
MR 85-015-1
F1
M-0-39
M-110
3 Hour
286
Static
MR 86-127
W13A1&A2
Control Rm
29
MR 85-015-1
F9
M-1-3-53
M-109
3. Hour
165F
Static
MR 86-127
W1381&82
HVAC Equip Am
30
MR 85-015-1
F9
M-1-3-53
M-103
3 Hour
286
Static
MR 86-127
W1381&B2
HVAC Equip Am
31
MR 85-015-2
C19
M10-3-54
M-5004 3 Hour
286
Norm Air Flow
N/A
W13C
Cont. 81dg. Reef
32
MR 85-015-2
C18
M10-3-54
M-5004 3 Hour
286
Norm Air Flow
N/A
W13C
- Cont. 81dg. Reef
33
MR 85-015-2
C17
M-10-3-54
M-5004 3 Hour
286
- iorm Air Flow
N/A
W13C
Cont. 81dg. Noof
34
MR 85-015-3
F7
M-1-3-53
M-109
3 Hour
165F
Norm Air flow
N/A
WIS
Control Rm -
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_ _ ._ _ _ _ __
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TABLE FD-1 (Ccnt'd.)
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%
7 U
PBNP FIRE DAMPER STUDY
_.
.
Danper
Install.
Penetra-
Survey
Damper Fusible
Test
Fan Off
Associated
Associated
No.
Docu.
tion No.
Dwg.
Dwg.
Rating Rating
Cond', tion
or other
Fan
Area
l
l
l
l
35
MR 85-015-3
N6
M-7-3-15
M-111
3 Hour
165F
Norm Air flow
N/A
Wil
Air Comp Rm
36
MR 85-015-3
S1
M-1-3-5')
M-109
3 Hour
165F
Norm Air Flow
N/A
W13Bl&B2
Comp Rm
,
37
MR 85-015-4
S2
M-1-3-50
M-109
3 Hour
165F
Norm Air Flow
N/A
W13Bl&B2
Comp Rm
i
1A
MR 613
57
M-7-3-9
M-111
3 Hour
160F
Norm Air Flow
N/A
N/A
El 8 Bat Rm
2A
MR 613
53
M-7-3-10
M-111
3 Hour
160F
Norm Air Flow
N/A
N/A
El 8 Bat 'm
3A
/R 613
56
M-7-3-3
M-111
3 Hour
160F
Norm Air Flow
N/A
N/A
El 8 AFI
.a
4A
MR 613
E13
M-7-3-4
-
3 Hour
160F
Norm Air Flow
N/A
N/A
El 8 AFP Rm
MR 613
W8
M-7-3-22
-
3 Hour
160F
Norm Air Flow '
N/A
N/A
El 8 AFP Rn
6A
MR 613
E49
M-7-3-23-1
M-111
3 Hour
160F
Norm Air Flow
N/A
N/A
El 3 AFP Rm
7A
MR 613
E48
M-7-3-23-2
M-111
3 Hour
160F
Norm Air Flow
N/A
N/A
El 8 AFP Rm
8A
MR 622
H5
M-5-3-31
N/A
3 Hour
160F
N/A
N/A
N/A
CRNorthWig
9A
MR 622
512
M-5-3-32
N/A
3 Hour
160F
N/A
N/A
N/A
CR South Wig
10A
MR 622
E7
M-5-3-33
N/A
3 Hour
160F
N/A
N/A
N/A
CR East Wind
11A
Orig.Constr
F12
M-5-3-30
M-110
1.5 Hour 160F
Norm Air Flow
N/A
HX65A
DG Rm Heatic'
12A
Orig.Constr
F11
M-5-3-30
M-110
1.5 Hour 160F
Norm Air Flow
N/A
HX65A
DG Rm Heatic
13A
Orig.Constr
F8
M-5-3-30
M-110
1.5 Hour 160F
Norm Air Flow
N/A
HX65B
DG Rm Heatiri
14A
Orig.Constr
F7
M-5-3-30
M-110
1.5 Hour 160F
Norm Air Flow
N/A
HX65B
DG Rm Heatfr
15A
Orig.Constr
F2
M-5-3-30
M-110'
1.5 Hour 160F
Norm Air Flow
N/A
HX78
Air Coup Rm
Heating
16A
Orig.Constr
F1
M-5-3-30
M-110
1.5 Hour 160F
Norm Air Flow
N/A
HX78
Air Crsp Rm
Heating
17A
Orig.Constr
F14
M-5-3-30
M-110
1.5 Hour 165F
Static
N/A
W12A
DG Air I
aq
18A
Orig.Constr
F14
M-5-3-30
M-110
1.5 Hour 165F
Static
N/A
W12A
DG Air Exnat
19A
Orig.Constr
F14
M-5-3-30
M-110
1.5 Hour 165F
Static
N/A
W12B
DG Air Exhat
20A
Orig.Constr
F14
M-5-3-30
M-110
1.5 Hour 165F
Static
N/A
W12B
DG Air Exhat
21A
Orig.Constr
F13
M-5-3-30
M-110
1.5 Hour 165F
Static
N/A
W12C
DG Air Exhat
22A
Orig.Constr
F13
M-5-3-30
M-110
1.5 Hour 165F
Static
N/A
W12C
DG Air Exhat
23A
Orig.Constr
F13
M-5-3-30
M-110
1.5 Hour 165F
Static
N/A
W12D
DG Air Exhat
24A
Orig.Constr
F13
M-5-3-30
M-110
1.5 Hour 165F
Static
N/A
W120
DG Air Exhat
25A
MR 784
58
M-2005-6-37
EB45A-5 3 Hour
160F
Norm Air Flow
N/A
AHU1A&lB
White Inveri
26A
MR 784
E7
M-2005-6-388 EB45A-5 3 Hour
160F
Norm Air flow
N/A
ANU1A&l8
White Inveri
27A
MR 784
C14
M-2005-6-44B EB45A-5 3 Hour
160F
Norm Air Flow
N/A
ANUIA&l8
Yellow inves
28A
MR 784
CIS
M-2005-6-44B EB45A-5 3 Hour
160F
Norm if- Flow
N/A
AHUIA&lB
Yellow Invei
29A
MR 784
E7
M-2005-6-38B EB45A-5 3 Hour
160F
Norir. Air Flow
N/A
AHUIA&lB
DIOS Bat Rm
. -
__
TABLE FD-1 (Cont'd.)
PBNP FIRE DAMPER STUDY
Instsl17
Penetra-
Survey
Damper Fusible
Test
Fan Off
Associated
' Associated
No.
Docu.
tion No.
Dwg!
Dwg.
Rating Rating
Condition
or cther
Fan
Area
l
l
30A
MR 784
N12
M-2005-6-18
EB45A-5 3 Hour
160F
Norm Air Flow
N/A
AHU1A&l8
D105 Bat Rm
I
31A
MR 784
S4
M-2005-6-41
EB45A-5 3 Hour
160F
Norm Air Flow
N/A
AHU1A&l8
D106 Bat Rn
32A
MR 784
E22
M-2005-6-20
EB45A-5 3 Hour
160F
Norm Air Flow
N/A
AHU1A&lB
D106 Bat Rm
C
!
!
i
!
.f
(
i
a
.
.
e
4
4
l
e
e
- - - - - -
--
- - .
y
mw.
_-_
_ _ _ - - _
.
-.
TA8LE FD-2
.
l
Size
Air Flow
Velocity
Press.0 rop
Section
Velocity
Press. Drop
FD-1 Configuration
'
I
No.
In.
cfm
fpm
In. Water
In.
fpm
In. Water
Installed Evaluated
1
16x34
7460
1975
.120
16x17
3950
433
b
b
2
18x34
8260
1944
.120
18x17
3887
.433
b
b
3
20x34
9060
1919
.120
20x17
3838
.400
b
b
4
20x36
9860
1972
.120
20x18
3944
433
b
b
5
6x12
300
600
.012
6x12
600
.012
b
b
6
8x18
1000
1000
.030
8x18
1000
.030
b
b
7
12x18
1700
1134
.034
12x18
1134
.034
b
b
8
12x24
2403
1200
.037
12x24
1200
.037
b
b
21
12x12
470
470
.019
12x12
470
.019
d
a..
22
12x12
470
470
.019
12x12
470
.019
d
a,d
24
14x30
4050
1388
.054
14x30
1388
.054
c
a(2)
31
30x30
12000
1920
.120
30x30
1920
.120
f
f
32
30x30
12000
1920
.120
30x30
1920
.120
f
f
33
18x30
12000
3200
.296
18x30
3200
.296
f
f
'
34
6x18
550
734
.017
6x18
734
.017
e
a,e
35
22x25
2200
576
.012
22x25
576
.012
d
a,d
36
18x36
5500
1222
.037
18x36
1222
.037
b
b
37
18x30
5500
1467
.060
18x30
1467
.060
e
c
1
1A
12x24
470
235
.002
12x24
235
.002
a
a
2A
12x24
470
235
.002
12x24
235
.002
a
a
'
3A
18x24
940
313
.003
18x24
313
93
a
a(1)
4A
12x12
300
300
.003
12x12
300
.003
a
a(1)
12412
300
300
.003
12x12
300
.003
a
a(1)
6A
20x30
3750
900
.025
20x30
900
.025
c
c(1)
7A
30x36
2810
375
.005
30x36
375
.005
a
)
11A
12x12
1500
1500
.060
12x12
3000
.264
g
g-
12A
12x12
1500
1500
.060
12x12
3000
.264
g
g
13A
12x12
1500
1500
.060
12x12
3000
.264
g
g
14A
12x12
1500
1500
.060
12x12
3000
.264
g
g
15A
12x12
1150
1150
.034
12x12
2300
.124
g
g
16A
12x12
1150
1150
.034
12x12
2300
.124
g
g
25A
16x24
3230
1210
037
16x24
1210
.037
b
b
26A
8x24
3230
2422
.147
8x24
2422
.147
b
b
27A
12x20
2550
1530
.065
12x20
1530
.065
b
b
28A
16x16
2550
1435
.057
16x16
1435
.057
b.
b
_ _ _ _ _ _ _ _ _ _ - _ _ .
!
TABLE FD-2 (C:nt'd.)
Size
Air Flow
Velocity
Press. Drop
Section
Velocity
Press. Drop
FD-1 Configuration
No.
In.
cfm
fpm
In. Water
In.
fpm
In. Water
Installed Evaluated
1
29A
12x12
1840
1840
.090
12x12
1840
.090
b
b
30A
12x16
1840
1380
.054
12x16
1380
.054
a
a
31A
12x16
1520
1140
.034
12x16
1140
.034
b
b
32A
12x12
1520
1520
.0E5
12x12
1520
.065
a
a
(1) Damper functionally tested during Halon fire suppression system discharge tests.
7
!
(2) Shutdown of fans W-27A&B enhances damper operability.
!
,
i
%
l
!
l
-
l
.
.
.
.
.
.
.
.
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.
-
_ _ _ _ _ _ _
8
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FIGURE
FD-I
.
.
Legend
O ra n
si
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lli da rn pe r
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g
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(9)
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FD-2a'
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WALL
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BbCKDRLFT DAMPER
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FIG UR E
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son-n
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' FIG UR E
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