ML20128E569
| ML20128E569 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 02/03/1993 |
| From: | TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | |
| Shared Package | |
| ML20128E562 | List: |
| References | |
| PROC-930203-01, NUDOCS 9302100514 | |
| Download: ML20128E569 (9) | |
Text
_ _. _
COMtWCHE PEAK STEAM ELECTRIC STATION UNIT 1 & 2 INSERVICE TESTING PLAN FOR PUMPS AND VALVES FIRST INTERVAL REVISION 1 Prepared By:
J 1/_
ff Date; j 3
/
Approved By:
-r>% G k%
Date: O2-05D Manager, Plant Engineering Cl $ bl.'} **)/
Approved By:
Date:
Ll3lIh l
Vice President, Nuclear Operations 1
MSA88cd088ll25 P
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COMANCllE PEAK STEAM EIECTHIC STATION UNIT I & 2 INSERVICE VALVETESTING FL\\N TABLE 4 - CliEMICAL and VOLUME CONTROL i-Page1of12 Test P.arameters / ScF dule Flow Valve /
Safety Fail Puwtion Valve Diagram Actuator Code Cate-Fune-Func-leak Exercise Safe Indicator Number (Coord.)
Type
. Sze Class gory tion Pos.
Test Test Test.
Test Remarks i
XCS-0037 M10257- - CK/SA 3/4 3
C A
O' N/A CV/Q N/A '
N/A Ihmp Minibw Path (C-3)
XCS-0039 -
M i-0257 CK/SA 3/4 3
C A
O N/A CV/Q N/A N/A E%mp Mim%w Path (C-5) 4 XCS-0041 M1-0257
' CK/SA 3/4 3
C A
O N/A CV/Q N/A N/A 1%mp MintNw Path (C-4)
XCS-0044 -
M1-0257
' CK/SA 3/4' 3
C A
O N/A CV/Q N/A N/A 1%mp Mambw 1%th (C-6)
FCV-0110B M1-0255 DA/AO 2
2 B
P C
N/A N/A N/A PIT /
Nration Flowpath Ibundary (F-5) '
2YR M2-0255-2
= (F-3)
FCV-0111A -
M1-0255-2 GL/AO 2
3 B
P C-N/A N/A N/A PITI Boration Flowpath Nundary (C-2) 2YR M2-0255-2 (C-2)
FCV-0111B M1-0255 DA/AO 2
2 B
P C
N/A N/A N/A PIT /
Boratmr. Fh>wpath Boundary & Boron (G-3) 2YR Ddution Flowpath Isolation (during g
M2-0255-2 Mode 6) j (E-2) -
i r
B I
l Rev. 1 February 3,1993
4 l
t t
COMANCilE PEAK STEAM ELECI7 tlc STATION UNIT 1 & 2 INSERVICE VALVE TESTING 11AN i
TABLE 7 - DIESEL GENERATOR AUXILIAltlES t
Page 3 of 4 t
Test Paranwters/ Schedule
- Flow Valve /
Safety Fail Pusation Valve Diagram Actuator Code Cate-Func-Func.
Imk Exernse Safe Indicator Number (Coord.) -
Type-Sze Cass gory tion Pas-Test Test Test Test Remarks i
3.
2D0 0075 M2-0215-D CK/SA 1-1/2 3
C A
C N/A CV/Q N/A
' N/A Safety Related Air Rweiver to Non-(F-5)
RIt V2 Safety Air Supply Isidat%
2DO-0076 M2-0215-E CK/SA ' 1-1/2 3
C A
C N/A CV/Q N/A N/A Safety-Related Air Receiver to Non-r (E-1)
RRV2 Safety Air Supply Isolation 2DO-0077 M24215-E CK/SA 1-1/2 3
C-A C
N/A CV/Q N/A
,N/A Satsty-Related Air Receiver to Non-(F-5)
RR V2 Safety Air Supply Isrdation
[
DO-0104 M1-0215-II CK/SA 1
3 C
A C
N/A CVIQ N/A N/A Jacket Water Flowpath Ibundary (F-3).
j M2-0215-li f
(F-3)
DO-0107 M1-0215-II (1) 8 3
B A
N/A N/A N/A N/A N/A Jacket Water Temperature Control l
(E-4)
(1)
M2-0215-1I t
(E-4) -
{
DO-0157 M1-0215-B CK/SA 6
3 C
A O
N/A CV/Q N/A N/A Lule Oil Flowpath 1
(C-6)
M2-0215-B f
(C-6)
DO-0158 -
M1-0215-B. CK/SA -
6 3
C A
C N/A CViQ N/A N/A Imbe Oil Flowpath Boundary t
(C-6)
M2-0215-B (C-6) t DO-0204
' M1-0215J CK/SA -
1 3
C A
C N/A CY/Q N/A N/A Jacket Water Flowpath Boundary
- (F-3) -
M2-0215-J.
(F-3) i 4
Rev. 1 February 3, 1993 1
v
COMANCHE l'EAK STEAM ELECTRIC Si'ATION UNIT I & 2 INSERVICE VALVE TESTING 11AN TABLE 7 - DIESEL GENERATOR AUXILIARIES Page 4 c(4 Test Parameters / Schedule Flow Valve /
Sarcty Fail Possum Valve Diagram Actuator Code' Cate-Func.
Func.
Ink Exercise Safe,. Indicator Number (Coord.)
Type Sze - Class gory tim I%.
Test Test Test '
Test Remar ks
- DO-0207 M1-0215,I (1) 8 3
B A.
N/A-N/A N/A N/A N/A Jacket Water Temperature Control (E-4)
(1)-
M2-0215,3 (E-4)
DO-0257 M 1-0215-C CK/SA 6
3 C
A O
N/A CV/Q N/A N/A Lube Oil Flowpath (C-6) i M24215-C (C-6) -
DO-0258 M1-0215-C. CK/SA 6
3 C
A C
N/A CVIQ N/A N/A Lube Oil Fh>wpat:- Ihmndary (C-6)
- M2-0215-C (C-6)
Rev. 1 February 3, 1993
COMANCliE PEAK STEAM ELECTRIC STATION UNIT 1 & 2 INSERVICE VALVE TESTINC PLAN TABLE 13 - SAFE'IT INJECTION Page 7 of 17 Test F%rameters / Schedule Flow Valve /
Safety Fail Position Valve Diagram Actuator Code Cate-Func-Func-Imik Emercise Safe Indicator Number (Coord.)
Type Sze Cass gory tion Ibs.
Test Test Test Test Remarks 8824 M1-0263-GUAO 3/4 2
B A
C N/A MT/Q FC/Q PIT /
Containment Idati..n i
(E-2) 2YR M2-0263 (B-2) 8825 M1-0263 CUAO 3/4 2
A A
C LTJ/TS MT/Q FC/Q PIT /
Contamment (W.. tion (E-1) 2YR M2-0263 (B-2) 8835 M14263-A GA/MO 4
2 B
A O/C N/A MT/CS N/A PIT /
ECCS to Cold legs Fbwpath / ECCS to (A-5)
(3) 2YR llot legs 1'lowpath Boundary &
M2-0262 Containment Isolation & Pasave lipe (F-3)
Break Isolation 8840 M1-0263 B CA/MO 10 2
A A
O/C LTJ/TS MT/CS N/A PIT /
ECCS to Ilot legs Flowpath / ECCS ta (A4)
(3) 2YR Cold legs Flowpath Boundary &
M24263-A Containment Isolat2an & Passive lipe (F-2)
Break Isolation 8841A M1-0263 CK/SA 6
1 A/C A-O/C LT/TS CV/RF N/A N/A ECCS to Itot isg2 Flowpath / Reactor (C-1)
(1)-
(6)
Coolant lYessure Boundary &
M2-O'33 Containment Isolation
-(E-1) 8841B -
M1-0263 CK/SA 6
1 A/C A
O/C LT/TS CV/RF N/A N/A ECCS to Ilot Legs Flowpath / Reactor (C-2)
(1)
(6)
Coolant Pressure Ikaandary &
M2-02G3 Containment Isolation (E-2) -
8843 -
M1-0261 -
GUAO 3/4 2
B A
Containment Isolation (B-2) 2YR M2-0261 (E-4)
Rev. 1 February 3, 1993
COMANCIIE LEAK STEAM ELECTRIC STATION liNIT I & 2 i
INSERVICE VALVETESTINC PLAN TABLE 13 '- SAFL'IT INJECTION Page 15of17 l
Test P..ra,.wter., / Si lmlide Flow Valve /
Safety Fani P4=ution Valve Diagram - Actuator Code Cate.-
Func-Func.
Isak Exerme Safe Indicator Number (Coord.)
Type Size Class gory tion Pas-Test Test Test Test Ite n...r k s
' wpath / Re.ut..e 898BC
- M1-0262
- CK/SA -
10 1
NC A
O/C LT/TS CV/CS N/A N/A ECCS to G.I.I leg (A-5)
(1)
(7)
G..i. int l*resS. ire tw.undary M2-0263-B (C-5) 8S18D M1-0262.
CK/SA 10 1
NC A
O/C LT/TS CV/CS N/A N/A ECCS to G.3d legs bbwsth / Re.wt..r (A-6)
(1)
(7)
G..lant Pressere Boundary M24263-B (G-6) 8949A M 1-0263 '
CK/SA 6
1-NC A
O/C LT!TS CV/ItF N/A N/A ECCS t.. Il..t iegs thpith / R. ws..r (A-2)
(1)
(6)
C..1 int Paesaere lloundary M2-0263
. (F-2).
8949B '
M1-0263 _
CK/SA 6-1 NC A
O/C LT!TS CV/HF N/A N/A ECCS tu flot legs Flowpth / Heactor
'(A.1)
(1)
(6)
G..lant Pressure Boundary M2-0263 (G-1) i 8949C M1-0263 CK/SA 6
1 NC A
O/C LT/TS CVIRF
'N/A N/A ECCS to llot legs thpath / React <v (A-1) '
'(1)
(6)
Cmlant Pressure ihmndary M2-0263 (G-2) 1 8949D M1-0263 CK/SA
~6-1 NC A
O/C LT/TS CV/RF N/A N/A ECCS to Ilut Legs F% path / Reertar I
(A-3)
(1) t6)
C.Lant Pressure Ik.undary M2-0263 -
(F-3) 8956A M1-0262 CK/SA 10 1
A/C
.A O/C : LTTIS CVD/RF N/A N/A ECCS to Cold Legs Flowpath / Reactor (B-2)
(1)
(8)
Cmlant Pressure Boundary
' M2-0263-B RR V7 (E-2)
Rev. 1 February 3, 1993
J COMANCIIE l'EAK STEAM El ECTitiC STATION UNIf I & 2 INSERVICE VALVE TESTING PLAN TABLE 13 - SAFE'fY INJECTION NOTES SSilA & B, Recirculation Sumps to HilR Pumps isolation / Containment luolation Valves, are full->troke exercised at cold 5.
shutdowns. Full or part-stroke exercising of these valves during plant operation is not piacticable due to the precautions necessary to conduct the test. The exercise test for these valves involves draining a major portion of the respective Itllit tram (to prevent backfilling the Recirculation Sump) thus creating hundreds of gallons ofliquid radwaste and long out-of-service times for the system. The subsequent system fill and vent is best facilitated by running the Rillt pump and flowing through tiowp..ths which are net available during plant operation.
8815, SI4900A, B, C, D,8969A, liigh llead Safety injection Flow path Check Valves; SI-8819A, B, C, D, SlaoM 18. C, D. EtM & H, 6.
8926,8949A,B,C & D and 8969B, Intermediate Ilead Safety injection Flow path Check Valves; 8841 A & H, low licad Safety injection i
Flow path (to the llot Legs) Check Valves are full stroke exercised at refueling outages. These valves cannot be full or part-stroke open exercised during plant operation or during cold shutdowns because the flow paths discharge into the RCS.
In the case of the Iligh llead subsystem, the valves cannot be full-stroke exercised during plant operation because the high liCS pressure will not allow the maximum requir-I injection flow rate to be achieved. Part-stroke exercising during plant operation is not practicable because any flow through the vale r sults in unnecessary thermal transients on the RCS cold leg nozzles for which they are not designed and imposes hydraulic transk ts on the charging system and on the Reactor Coolant Pump seals which can cause them to cock. The check valves in the high head injection path cannot be full-stroke exercised at cold shutdowns because the high flow rates could challenge the RCS Cold Overpressure Mitigation System as well as impose hydraulic transients on the charging system and on the Reactor Coolant Pump seals which can cause them to cock. Part-stroke exercising at cold shutdowns is not practicable because the high head injection flowpath is not designed for throttled operation.
- In the case of the Intermediate IIead and Low Ilead subsystems, the valves cannot be full or part-stroke exercised during plant (An
{
operation because the relatively higher pressure of the Reactor Coolant System will not allow forward flow through these paths.
exception to this is valve 8926 which lies in the SI Pumps
- miniflow path and thus is part-stroke open exercised quarterly during Rev. I February 3, 1993
i COMANCllE PEAK STEAM El.ECTillC STATION UNIT 1 & 2 INSERVICE VALVE TESTING Pl.AN TABl.E 13 - SAFETY INJECTION NOTES i
pump tests.) Part-stroke exercising certain check valves during plant operation via the Si test header is not practicable because this
[
t path yields flow rates too small (approx. 5 gpm) to be sneaningful for assessing the operational readiness of these valves. The check i
. valves in the intermediate head injection paths cannot be full-stroke exercised at cold shutdowns using the Safkty injection Pumps because the resulting high flow rates and pressures could challenge the RCS Cold Overpressure Mitigation System. The check vaives in the low head injection paths to the hot legs and the check valves in the combined low head and intermediate head injection i
(
paths to the hot legs (8949B & C) are not practicable to test at cold shutdowns because forward flow will disturb these Reactor Coolant Pressure Boundary isolation Valves. Doing so requires leak testing the valves per the Technical Specification requirements j
identified in Note I above. This leak testing is not p acticable to perform at cold shutdowns due to its complexity and critical path l
nahire. Such testing would prevent the immediate return of a shutdown unit to power operation which is contrary to the intent of OM Part 10, paragraph 4.3.2.2.g. Part-stroke exercising these valves at cold shutdowns is not practicable because the 11owpaths are not designed for throttled operation.
The subject check valvee are full-stroke close exercised at refueling outages at the same frequency as the finil-stroke open exercise l
for the reasons described above. (Close exercising of valve 8926 is not practicable following its quarterly part-stroke open exercise.
[
To do so would defeat both trains of the intermediate head subsystem. Therefore valve 8926 is abe full-stroke close exercised at I
refueling outages coincident with its full-stroke open exercise _)
i t
- 7. 8818A, B, C, D,8948A, B, C, D,8958A & B Low Ilead Safety Injection Flowpath Check Valves, are full-stroke exercised et cold 1
shutdowns. These valves cannot be full or part-stroke open exercised during plant operation because the relatively higher pressure 4
of the Reactor Coolant System will not allow forward flow through these paths ('llie flowpath through the KilR to RWST return line t
can be used at times to full-stroke exercise 8958A & B however this path cannot be used during plant operation since opening this line j
defeats both trains of the Low Pressure Safety injection System.) Part-stroke exercising certain of these check valves during plant operation via the Si test header is not practicable because this path yields flow rates too small(approx. 5 gpm) to be meaningful for j!
assessing the operational readiness of these valves.
Rev. 1 February 3,1993 i
I i
COMANCllE l'EAK STEAM El.ECTRIC STATION ITNIT I & 2 INSERVICE VALVE TESTING Pl.AN TAllLE 13 - SAFETY INJECTION 1
NOTES i
The subject check valves are full-stroke close exercised at cold shutdowns at the same frequency as the full-stroke open exercise for the reasons described above.
I
- 8. 8956A, B, C, D, Safety Injection Accumulators Flowpath Check Valves, are disassembled at refueling outages to verify operability.
These valves cannot be full or part-stroke open exercised during plant operation because the relatively higher pressure of the Reactor l
Coolant System will not allow forward flow through the valves. Part-stroke exercising during plant operation via the Si test header is not practicable because this path yields flow rates too small (approx. 5 gpm) to be meaningful for assessing the operational readiness of these valves. The check valves cannot be full-stroke exercised at cold shutdowns because the resulting high flow rates could ch'allenge the RCS Cold Overpressure Mitigation System. Part-stroke exercising these valves at cold shutdowns'is not practicable because the flew paths are not designed for throttled operation. Full-stroke exercising these valves with flow during
. refueling outages is not practicable because rapid blowdown of the Safety Injection Accumulators causes a cooling transient to occur in the gas. space of the accumulaters for which they are not designed.
The subject check valves are not close exercised during plant operation or cold shutdowns for the reasons desenbed above.
J i
L l
i February 3,1993 r
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