ML20125E397
| ML20125E397 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 12/11/1992 |
| From: | William Cahill, Woodlan D TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| TXX-92594, NUDOCS 9212170036 | |
| Download: ML20125E397 (10) | |
Text
-
C ~6-=5 Log # TXX-92594 C~
File # 10010 J
903.9 (clo) i E
Ref. # 10CFR50.34(b)
~'
7tlELECTRIC
" " II' wimam J. c.hm. Jr.
Grcup Gce l'rre.Jent U. S. Nuclear Regulatory Commission Attention:
Document Control Desk Washin'+on, DC 20555
SUBJECT:
COMANCHE PEAK STEAM ELEClRIC STATION (CPSES) - UNIT 2 DOCKET 405. 50-446 AND 50-446 ADVAhCE FSAR SUBMITTAL - SECTION 3.9B AND TABLE 3.98-10.
MANUAL ACTIVE VALVES l
2 Gentlemen:
The attachment to this letter provides an advance CPSES FSAR submittal to facilitace NRC Staff review of the subject area in support of licensing Unit 2.
The attachment is organized as follows:
1.
A description / justification of each change.
i 2.
A copy of the revised FSAR pages (changes are indicated in the margin by a revision bar and "87").
The attached material is scheduled to be incorporated in CPSES FSAR Amendment 87 which is currently scheduled for December 18, 1992.
If you have any questions regarding this submittal, please contact Mr. Carl Corbin at (214) 812-8859.
Sincerely, t
William J. Cahill, Jr.
By:
G t
D. R. Woodlan 15004o oocket Licensin9 Hana9er CBC/grp Attachment c-Mr. J. L. Milhoan. Region IV Resident inspectors, CPSES (2)
Mr. T. A.
Bergman, NRR Hr. B. E. Holian, NRR 9212170036 921211 PDR ADOCK 05000445 t
P PDR 4co s. otiy,3t,,,, t 3.33 g,ji,s, na475201
FINAL SAFETY ANALYSIS REPORT (FSAR) 9TTACHMENT to TXX-92594 AMENDHENT / REVISION 87 FAGE.1 0F 9 DETAILED DESCRIPTION Prefix Page (at aseeded)
Ed3ng! Descriotion 3.92-35 4
See Sheet No(s) :38 and 39 Revises Section 3.9B.3.2 to clarify that the need f or f.eismic loading " demonstration of operability" for manual active valves is not required.
Clarification Manual active valves are not required to perform a mechanical motion during a seismic event.
Such va:ves i
are required to perform mechanical macion after a SSE to perform the nuclear safety function.
Therefore, the demonstration of operability during a SSE is not necessary.
The operability of these valves is ensured i
by compliance with stress limits using standard design and a,alysis methods.
Change Request Number
- SA-92-666.1 Commitment Register Number Related SER : 3.9 SSER :22 3.9 SER/SSER Impact
- No Table 3.98-10 4
See Sheet No(s) :02. 03, 04 19 and 24 J
Adds 8 manual active valve (s) to Table 3.9B-10 (4 l
valves - main steam system - atmospheric relief valve
~
isoletion; 2 valves - spent fuel pool - makeup: 2 valves - chilled water - safety chilled water surge i
tank makeup) to Table 3.90-10.
Update This change updates the table to reflect the as-built configuration of the plant.
Change Request Number
- SA-92-666.2 Commitment Register Number :
Relfted SER : 3.9 SSER :22 3.9 SER/SSER Impact
- No 4
i I
ATTACHMENT to TXX-92594 CPSES/FSAR j
PAGE 2 0F 9.
The floor response spectra consist of one dominant mode and have 3
l a narrow peak at this frequency.
l The degree of coupling in the equipment does, in general, determine if l
a single or multi-axis test is required.
Multi-axis testing is i
required if there is considerable cross-coupling.
If coupling is very j
light, then single-axis tes_ing is justified; or, if the degree of coupling can be determined, single-axis testing can be used with the j
input sufficiently increased to include the effect of coupling on the response of the equipment, i
j From tN prevtou: arguments, the safety-related pump / motor assemblies j
are not damagec and continue operating under SSE loadings, and l
therefore, they perform their intended functions.
i I
j These proposed requirements take into account the complex l
characteristics of the pump and are sufficient to demonstrate, and l
ensure, the seismic operability of the active pumps.
j The functional capability of active pumps after a faulted condition is ensured because only normal operating loads and steady-state nozzle l
loads then exist.
Because the pumps are not damaged during the j
faulted condition, the postfaulted condition operating loads are l!
identical to the normal plant operating loads.
This is ensured by 20 requiring that the imposed nozzle loads (steady-state loads) for I
i normal conditions end postfaulted conditions be limited to the magnitudes of the normal conditica nozzle loads.
The postfaulted l
condition capability of the pumps to function under.these applied j
loads is proven during the normal operating plant conditions for active pumps. Safety-related active valves must perform their 87
]
mechanical motion during the course of accomplishing a system safety function. When appropriate, assurance is supplied that these-valves 4
1 operate during a seismic event. When full scale tests are not performed, tests accompanied by analyses are conducted for these 1
active valves.
3 V
i 3.98-35 Amendment 87 Oecember 18, 1992-f
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ATTACHMENT to TXX-92594 PAGE 3 0F 9 CPSES/FSAR 66 7.
If the frequency of the valve is less than 33 Hz, a dynami analysis of the valve is performed to determine the quivalent deflection which is applied during the static test.
The analysis provides the amplification of the input acceleration with consideration of the natural frequency of the valve and the frequency content of the applicable plant floor response spectra.
The adjusted accelerations are determined using the same conservatisms contained in the (3.0g) horizontal and (2.0g)_
vertical accelerations used for rigid valves.
The adjusted accelerations are then used in the static analysis, ind valve operability is ensured by the methods previously outlined in steps 2 through 4, using the modified' acceleration input.
87 This testing program applies to valves with powered operators which
)
have extended structures. The testing is conducted on a representative number of valves.
Valves from each of the primary safety-related design types are tested.
Valve sizes which cover the range of sized in service are qualified by the test; the results are used to quali' all valves within the intermediate range of sizes.
Amendment 87 3.98-38 December 18, 1992
i ATTACHMENT to TXX-92594 CPSES/FSAR PAGE 4 0F 9 -
~
Valves which are safety-related but can be classified as not having an extended structure, such as check valves and safety relief valves, are i
considered separately.
4 The check valves are characteristically simple in design and their operation is not affected by seismic accelerations or the maximum appliad nozzle loads.
The check valve design is compact and there are no extended structures or masses whose motion could cause distortions which could restrict operation of the valve.
The nozzle loads caused by maxin,am seismic excitation do not affect the functional capability of the valve since the valve disc is designed to be isolated from the casing vall.
The clearance supplied by the design around the disc prevents the disc from becoming bound or restricted because of any casing distortions caused by nozzle loads.
Therefore, the design of the valves is such that once the structural integrity of the valve is ensured, using standard design or analysis methods, the capability of the valve to operate is ensured by the design features.
In addition to these design considerations, the valve also undergoes in-shop hydrostatic tests, and in-shop seat laakage test, and perioaic 10 sjiq valve exercising and inspection to ensure the functional capability of the valve.
Manual valves which are Active are those for which credit is taken for 87 post-accident operator action to perform a Huclear Safety Function.
The utilization of a manual Active valve is such that these valves are not recuired to perform a mechanical motion while being subjected to seismic loads.
Therefore, a demonstration of operability of the valve during SSE is not required. Once the structural integrity of the valve it ensured, by compliance with stress limits using standard 4
design or analysis methods, the capability of the valve to operate is assured by the design features.
In addition to these design considerations, the valve also undergoes in-shop hydrostatic tests, in-shop seat leakage tests, and periodic in-situ valve exercising and inspection to assure the functional capability of the valve.
The funt.tional capability of the feedwater check valves to operate 76 following a postulated feedwater line break are also demonstrated.
3.98-39 Amement 87 December 18, 1992
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Table 3,95-10 nz (steet 2) g Om 71 2
-4 ACTIVE VALVES
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t
. O t
Vs,1,e 24matification Valve Type 1:48 MotAod x
or !acation and Size Sa
- sty of Normal 4
@y sao.
Systen Actuator A
Class Actuation Position Funetton MV-239e us Clab / Air 3
2 Auto Trip Open Ammiliary Fee &eter System l55 A
l Actuation MV-2399 see Clebe/ Air 3
2 Auto Trip Opea Aemilammy re 4ater syetem Actuatica l66 WV-2t00 Des Clobe/ Air 3
2 Auto Trap Op m Ausiliary Fe*<tiater Systen l55 l
- Actuation MV-2401A/S.
ses Clab / Air 3/4 2
Auto Trap open Assiliary Fee & ater System f55 l
Act uation IIV-2402A/S Ms Clobe/ Air 3/4 2
Auto Trip Open Auxiliary Fee & ater System l55 4
l Actuation MV-2403A/B Ms C1cbe/ Air 3/4 2
Auto Trip Open Aus111ery Fee & ater system l55 l
Actuation MV-2404A/S tes Clotee/ Air.
3/4 2
. Auto Trip Open Anailiary ree& ater System l55 l
Actuation l
MV-2405 Ms C1cbe/ Air 3/8 2
Auto Trip Open Coateinment Isolation MV-2406 Ns Cicbe/ Air 3/4 2
Auto Trip Opea Contaisument Isolatico MV-2407 86 Clobe/ Air 3/4 2
Auto Trip Open Containment Isolataar.
4
{
MV-2408 De Globe /Mr 3/4 2
Auto Trip Open containment Isolatzoo tes-21 ses safety 6
2 Self-Aotuated Closed Steam Line Ieolation, Deoey g
.6 1
I l
Meet piamow.1 ses-22 pas safety 6
2 Self-Act uated Closed Steam Line Isolation, Decay f46 Heat Itamseel i
' ses-23 Ms safety 6
2 self-Act us' ed Closed stema Line teolation, Decay 66 a
Heat Reenwel t
a MS-24 pc safety 6
2 self-Actuated Closed Steam Lane Isolatzon, Decay l66 l
Heat flamoval
-,5
..f.ty 6
2 se u.Aet u.t m Cio..d
,t..e une I sot at..n.
0 e,
l66 l
.t
-.a i AMCtdOMENT 87 us-26 us Cat./Cear e
2 Iocat wanual Ope.
Atmospeseric Pelael Valve l47 l., DECEMBER 18.1992 I soi.u o.
I.
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l AMENDMENT 87 1
DECEMBER 18.1992 M,-1,2 Ms
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lQ010.8 Table 3.98-10 N1 X (Sheet 4)
Om M2 H
@ e+
ACTIVs VALVs3 0
-4 i
Valve Identifacetion valve Type AMS Sent hod 40 or Zacation and Sise Safety of Normal N
U1 No.
Systesg Actuator Class Datuation Position Function 4D Jh
' MS-133 -
DS Safety 6
2 Self-actuated Closed Steam t.A ne Isolatson, Decay l66 l
Beat memoem!
r i NS-134 BS Gate / Gear 8
2 Iacal Mammal
- Open Atmospheric 9411ef Velve ST l8T s
leotatkoa NS-142 SS Check 4
2 Self-Actuated closed Turbine Drives AFW Pump l66 Steam Supply Fath and l
--4 n -
I a.
MS-143 tes check' 4
2 Self-Actuated
'Cloemd Turbane Delven AFW Pump l66 Ste e S,,1, Pett,.-
l l
l68
[
NS-680 MB Check 1/2 3
Self-Aotuat ed Closed /Open Prevent Air Lose from j
Aconsamlator Air Supply l
I 5
l To S.C.
PORY After Iose L
s l
of Instrument Air esS-6el iG Check 1/2 3
Self-Actuated Closed /Opea Prevent Air Lose From l68 Acc M ator Air Supply l
4 l
To S. C.
PORY After toes t
l of Eastetammat Air 4-MS-682 MB Check 1/2 3
Self-Aetuated closed /Open Prevent Air tooe'rerma 68 f.
Amosessistor AAr Supply l
l To S.C. PORV After tome 1
l of Instrument Aar MS-633 NB Check 1/2 3
Self-Actuated Closed /Open Prevent Aar Lose Fram l68 1
Accumulator AAr Supply l
l l
To S.G.
P05tV After lose I
of Instrument Aar I
l-r MS-684 MS Check 1/2 3
Self-Actuet.1 Closed /Open Prevent Air Lose Fran l68 I
+
Accumalator Air Supply
]
I. '.
I To s.c. Pone After toes AMENDMENT 87 L
i l OECEMBER 18,1992 l
of rast rument Aar i
4 er
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6 CPSES/ FEAR MN OH l90to.e N
Tsbie 3.93-10 wx (Sheet 19)
Z Om 74 x d
I ACTIVE V&lVES O
ev O
H Valve identifloation Valve Type ANS hthod X
.X or location and Sise Safety of Ermal eW Ho.
System Actuatcr L
Class Actuation Pomation Funct ion W
MV-4394 SN Sutterfly Wtor 10 3
Auto Trip Open Sw Flow Path, Tream B l66 1
HV-4395 SW Butterfly le> tor 10 3
Remote Manual Closed Alternate  Flow Path, f55 l
Trata A 1
uv-4396 Su sutterfly De> tor 10 3
Remote Hammal closed Alternate AFW Flow Path, l55 l
Trata B i
l 78 4
f a
Su-373 Su check 24 3
Self-Act uated Open Dascharge Flow Path l64 1
j Su-374 SW Check 24 3
Self-Actuated Open Discharge Flow Path l66 SW-016 SN Check 10 3
Self-Act uat ed Open DischarTo Flow Path l66 Su-017
-SW Check 10 3
Self-Actuated Open DAscharge Flow Path l66 1SN-008 4 Su check 1
3 Self -Act uat ed Open Ptemp Cooling Flow Path f63 ISN-0045 SM Chook 1
3 Self-Aotuated open Pump Cooling Flow rat h l83 L
SW-344 SW Chech 10 3
Self-Actuated Closed Alternate AFM Flow Path l66 SW-349 SN Check 10 3
Self-Actuated Closed Alternate AFw Flow Path l66 CPI-SWVAVB-01 SW veoueen Relief 2
3 Self-Actuated Closed Mitigates meter Namer l 76 4
CPI-SWUhvD-02 SN Vacuum Ballef
?
3 Self-Actuated Closed MAtigates Water 4 - r l 76 CFI-SWVAVS-03 Su vacuima palter 1
3 Self-Actuated Closed Mitigates Water Sammer l76 4
CFI-SWVAVB-04
- SN Veou*en Relief 1
3 Self-Actuated Close Nitigates Water Ramaner 76 I
XSF-003 SF Check 10 3
Self-Actuated Open Discharge Flow Path l66 13F-004 SF Check 10 3
Self-Actuated Open Dascharge Flow Path l66 ISF-163 SF Check 3
3 Self-Actuated Closed Makeup Pat.h l66 6
IIF-161 SF Diaphram Samerheel 3
3 Local Manual Closed Spent Fuel Pool MaAeup f87 k
j XSF-179 SF Daephr e Bandwheel 3
3 Local Namuel Closed Spent Fuel Pool Mahoup l 47 i
XSF-Ito SF Chech 3
3 Self-Act uat ed Closed Nakeup Path 66
{
SI-166 SI Check 3/4 3
Self-Act eat ed Closed /Open Close on W a-Safety Lane Break to masat aAn Accumsalator aAtrogen presoura.
- $1-167 31 Check 3/4 3
Self-Actuated Cloemd/Opea Close on Non-Safety Line Brook to 4
meAataAn Acetanesistor altrogen AMENDMENT 87 DECEMBER 18.1992 i
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ACTIVE VALVas O
-4 M
Valve Identificattom valve Type ANS testbod
,X or Location and Sise safety of Normal u,
No.
Sv et en
&ctuator In.
Class Actuation
,oeition Function W
O C3-301 m
Oneak 1
3 self-Actuated open Emergency Hakeup water
.at - rT l..
C3-302 CE clobe/km
- beel 1
3 Local her.eal Closed Safety Chilled water l47 Surge Tank Makeup 87 C3-305 CM c1 h /handarbeel 1
3 T ~-= 1 Manual Closed Safety Chi 11.d water l87 Surge Tank Makew l81 RV-5542 VA butterfly h tor 12 2
Auto Trap Closed Conta i a-nt Isolatson NV-5543 VA Butterfly 3.ator 12 2
Auto Trip Closed Caetainsment Isolation
'EV-5563 VA Butterfly mtor 12 2
Auto Trip Closed Contate--at teolation NY-5540 VA Butterfly obter 12 2
Auto Trip Closed Containment Isolation MV-5541 VA autterfly m tor 12 2
Auto Trip cloe d Containment teolation RV-5562 VA
-Butterfly m tor 12 2
Auto Trip closed Containement Isolataos l46 EV-5556
.s clobe solenoid 1
2 Auto Trip Cloe=4 Contat - -t Imolatico l..
.V-555, u m i..oid 1
2 to Tri, cio.ed Co.t.im.o.t 1.oiatio.
l..
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id 1
2 A.to 2ri, o,
Co.t.i t reo1.tio.
l66 ev-5545 ses clobe sotenoid 1
2 Auto Trip ope.
Comtan---at reolatio.
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.oie.oid 1
2 A.t. Tri,
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1 1
4 4
. Amendment 8'7 December 18, 1992 l
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