ML20151Q359
| ML20151Q359 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 08/05/1988 |
| From: | Gridley R TENNESSEE VALLEY AUTHORITY |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| IEB-85-003, IEB-85-3, NUDOCS 8808110131 | |
| Download: ML20151Q359 (18) | |
Text
.
.v TENNESSEE VALLEY AUTHORITY CH ATTANOOG A, TENNESSEE 37401 SN 157B Lookout Place AUB 051988 U.S. Nuclear Regulatary Commission ATTH: Document Control. Desk Washington, D.C.
20555
.Centlemen:
~
In the Matter of
)
Docket Nos.-50-327 Tennessee Valiey Authority
, )
.50-328-SEQUOYAH NUCLEAR PLANT (SQN) - FINAL REPORT TO OFFICE OF INSPECTION AND ENFORCEMENT BULLETIN (IEB) 85-03, "MOTC2-OPERATED VALVE COMMON MODE FAILURES DURINC PLANT TRANSIENTS DUE TO IMPROPER SWITCH SETTINCS"
References:
1.
NRC IEB 85-03 dated November 15, 1985, "Motor-Operated Valve Common Mode Failures During Plant Transients Due to Improper Switch Settings" 2.
TVA letter to NRC dated May 12, 1986, "office of Inspection and Enforcement Bulletin 85 Motor-Operated Valve Common Mode Failures During Plant Transients Due to Improper Switch Settings - Sequoyah Nuclear Plant" "J. TVA letter to NRC dated February 12, 1988, "Sequoyah Nuclear Plant (SQN) - Office of Inspection and 1
Enforcement (IE) Bulletin 85 Motor-Operated Valve (MOV) Common Mode Failures During Plant Transients Because of Improper Switch Settings" 4.
NRC letter to TVA dated February 22, 1988, "Request for Additional Information Concerning Sequoyah's Responses to IEB 85-03 (Docket Nos. 50-327 and 50-328)"
S.
TVA letter to NRC dated April 22, 1988, "Sequoyah i
Nuclear Plant (SQN) - NRC Request for Additional Information Concerning Sequoyah's Responses to Office of Inspection and Enforcement Bulletin (IEB) 85-03" This letter documents full completion of all commitment items concerning SQH's Motor-Operated Valve (MOV) Program to address IEB 85-03.
TVA's original response to IEB 85-03 (reference 2) Listed nine commitment items with scheduled completion dates extending through SQN unit 2 restart.
l Seven of the nine commitment items-were documented as complete in TVA's February 12, 1988 responso (reference 3). of this letter contains information'that verifies completion of the two remaining f6ll f
I \\
8808110131 880805 PDR ADOCK 05000327 a
PDC An Equal Opportunity Employer
i il 61 0 5 1988 U.S. Nuclear Regulatory Commission commitment items (itemu 6 and 8 from reference 3).
Enclosuro 2. in accordanco with item (f) of the subject bulletin, contains the final report that summarizes the SQN offort and findings from TVA's MOV maintenance and tost program.
Please direct questions concerning this issuo to D. V. Goodin at (615) 870-7734.
Very truly yours, TENNESSEE V LLEY AUTi(ORITY
/
ss
,4
/
R. Gridley Manager Nuclear Llconsing and Regulatory Affairs Enclosures cc (Enclosures):
1 Ms. S. C. Black, Assistant Director for Projects TVA Projects Division U.S. Nuclear Regulatory Commission One White Flint, North 11555 Rockvillo Piko Rockville, Maryland 20852 1
Mr. F. R. McCoy, Assistant Director for Inspection Programs TVA Projects Division U.S. NuSloar Regulatory Commlssion Region II 101 Marietta Street, NW, Suito 2900 Atlanta, Georgia 30323
.Sequoyah Resident Inspector Sequoyah Nuclear Plant i
2600 Igou Ferry Road Soddy Daisy, Tennesseo 37379
ENCLOSURE 1 By 1ctter to URC dated February 12, 1988 TVA stated that, of the original nine commitment items, two commitment items (ltems 6 and 8 from reference 3) remained for final resolution of IEB 85-03.
The following documents the completion of these two commitment items.
ITEM 6 "Stroke test 1 MOV in each of the test categorios 4 and 5 (reference attachment 1 of SQN's May 12, 1986 responso) under full-flow DP conditions (total of 2 MOVs) during TD AFW pump surveillance testing during unit 2 restart."
SON EFFORT on March 21, 1988, during unit 2 restart, special test instruction (STI) 114 was performed on two turbine-driven auxiliary feedwater pump steam supply valves (2-FCV-1-17 and 2-FCV-1-51).
The objectivo of this test was to obtain motor-operated valvo analysis and testing systems (MOVATS) data whilo stroking these valves under full dif ferential pressure (dp) conditions.
The results of this test are given in the MOV Data Summary Table of enclosuro 2.
As-found test results indicated that both valves would havo mot their required thrust in the clocod direction.
It should be noted that the torque, "que bypass switches in the opening circuits for those valves woro removea tn 1986.
The basis for this was attributed to the need to prevent these valves from stopping in mid-travel, thus not reaching their full-open position. The u;iscating (opening) thrust for those valvos under op conditions was found to be acceptable.
ITEM 8 "Af ter issuing a design output document (item 7), reviso plant procedures to incorporate those requirements before startup from the unit 2 cycle 3 refueling outage but no later than March 31, 1988."
i SON EFFORT Maintenance Instruction (MI) 10.43, "Proceduro for Testing Motor-Operated Valves using MOVATS System," was revised to incorporate all the required thrust values from the design output document.
These requirements woro incocporated by revision 6 to MI-10.43.
This was completed by March 31, 1988.
1 i
l
.. -- - ~~ y w..~u_
i _ __
. i Additionally, AI-1.20, section 6.9.3, requires that Watts Bae Licensing initiate an independent verification of the commitment package and concur with the verification t esults before closure.'
~..
1 ENCLOSURE 2 e
i SEQUOYAH NUCLEAR PLANT UNITS 1 AND 2 REPORT OF SQN EFFORT AND FINDINGS TO INSPECTION AND ENFORCEMENT BULLETIN (IEB) 85-03, "MOTOR-OPERATED VALVE COMMON MODE FAILURES DURING PLANT TRANSIENTS DUE TO IMPROPER SWITCH SETTINGS" t
f 1
i I
..../ n.
.. ~ _
_L
I.
INTRODUCTION The following final report outlines the development and findings from TVA's MOV program at SQN for addressing IEB 85-03.
TVA is committed to maintaining an ongoing MOV maintenanco and training program to nnsure that all safety-related MOVs remain operationally ready and are rollable under both normal and worst-caso conditions.
In response to item (f) of the subject bulletin, this report addresses the three suggested toples:
1.
Verification of completion of the requested program.
2.
Summary of the findings as to valve operability before any adjustments.
3.
Summary of data in accordance with Suggested Data Summary Format.
II.
HISTORY OF SQN EFFORT Upon receipt of IEB 85-03, TVA performed an evaluation to define the activities SQN would take to address the bulletin.
Twenty-one MOVs from each unit were selected for applicability to the bulletin; ton high-head safety injection system valves, six intermediato-head safety injection system valves, and five emergency feedwater valves.
Following selection of the applicable valves, a document scacch was performed to document / analyze the design basis dp for each valve. A review of all codifications made to the identified systems /valvos was performed to ensure that the system parameters had not boon adversely affected. This review identified the original design basis dp as still being valid.
During the review, SQN roccived the Westinghouse Owners Group (WOG) methodology for determining design basis op's.
This methodology was used for FCV-63-22 on both units.
After verifying the adequacy of the design basis dp, contracts wore issued to the various valvo vendors to provido maxirum required thrust i
under dp conditions and the maximum allowable thrust that can be applied to the valve without causing damago.
The bulk of this data was roccived and was utilized in conjunction with MOVATS testing to establish and verify correct torque and limit switch settings.
)
It should be noted that of the 42 MOVs identified for testing, only three valves on each unit (1, 2-FCV-1-17
-18, and ~51) had torque / torque bypass switches in their opening circuits. The torque / torque bypass switches wore removed from these six valvos in 1986; therefore, all 42 MOVs tested for IEB 85-03 had torque /torquo bypass switches removed from their opening circuits. The basis for the omission / deletion of these torque / torque bypass switches is attributed to the need to prevent valves from stopping in mid-travel, thus not
-._.m
..t
. _ _ _a _ _ )
reaching their intended open position.
Because torque / torque bypass switches are only used for final seating (last 2 to 3 percent of travel in the closed direction), full-flow dp testing to verify torque and torque bypass switch settings (i.e., thrust reqdirements) is nuch less of an issue at SQN than the failure node reported in the bulletin.
Based on the above, all 42 MOVs identified for testing under IRB 85-03 were stroke-tested under non-dp conditions. The results of these non-dp tests are glven in the MOV Data Summary Table in this enclosure.
It should also be noted that theso test results were previously transmitted to NRC in TVA's February 1988 and April 1988 letters.
To further demonstrate operability of the SQN MOVs TVA performed a limited sample, full-flow dp test on five valves (1-FCV-62-91, 1-FCV-63-22, 1-FCV-63-40, 2-FCV-1-17 and 2-FCV-1-51).
These valves were placed in five test categories as defined by valvo size and dp.
On'e valve from each test category was tested under full-flow dp conditions.
The results of these full-flow dp tests are given in the MOV Data Summary Table in this enclosure.
At the time SQN received the bulletin, thermal overload protection devices on some of the bulletin valves were in the process of being bypassed to meet the requirements of 10 CFR 50.49.
For those valves whose overload protection devices were not bypassed, testing was performed periodically to verify the device would trip when subjected to full locked rotor current.
Four of the bulletin valves (1, 2-FCV-1-17, and -18) having thermal overload protection were not included in the SQN test procedure. Testing was performed, and these valves were incorporated into the existing test procedures to ensure the overload protection devices are properly testod and maintained.
Procedures that are utilized in the maintenance of Limitorque operators, the adjustment of torquo and limit switches, and the performance of MOVATS testing were reviewed with regard to IEB 85-03 and found to adequately address the areas of switch settings. To ensure that procedural controls exist for maintaining correct switch sottings j
throughout the life of the plant, TVA's Division of Nuclear Engineering (DNE) issued a design output document (Orawing Series 47A940) that defines the design basis dp, the required thrust, and the maximum allowable thrust for each of the 42 MOVs. These design requirements aro incorporated into SQN's implementing plant procedure, MI-10.43, to establish and maintain proper switch settings.
III.
VERIFICATION OF COMPtKTION of TVA's initial response to IED 85-03 for SQN dated May 12, 1986, contained nine commitment items with scheduled completion dates.
By "05000327/LER-1988-005, :on 880116,turbine Bldg Sump Release Line Radiation Monitor Inappropriately Declared Operable on 880115 Resulting in Failure to Take Grab Samples for 25.5 H. Caused by Operator Error.[[Topic" contains a listed "[" character as part of the property label and has therefore been classified as invalid.s Resumed|letter dated February 12, 1988]] TVA provided NRC with a status of the SQN MOV program that documented completion of the nine commitment items with the exception of itens 6 and 8. of TVA's February 1988 letter revised item 6 to indicato that MOV testing would bo performed i
during unit 2 restart rather than af ter unit 2 restart. The completion date for item 8 was also revised to March 31, 1988, from the original commitment date of November 1987.
l
- * " ^ ~ " " -
~ ' ~
- t Enclosuro 1 to this letter documents the completion of items 6 and 8 as stated. This documents the completion of all nino commitment items for final resolution of IED 85-03.
IV.
SUMMARY
OF FINDINGS i
SON APPROACH The TVA program for addressing IEB 85-03 involved MOV tests (stroke test in conjunction with MOVATS) performed under non-dp conditions. The basis for this approach was due to the fact that torque / torque bypass switches were removed from the opening circuits of all 42 MOVs. This eliminated the potential of valves stopping in mid-travol and thus not reaching their intended open position.
Full-flow dp testing to verify torque / torque bypass switch settings (i.e., thrust requirements) is therefore much less of an issue at SQN than for the f ailure mode (HOVs falling to open under op conditions) reported in the bulletin.
All 42 HOVs at JQN are equipped with torque / torque bypass switches in their closing circults. The bypass switch remains in the closing circuit for 97-98 porcent of valve travel.
At that point, the bypass switch drops out of the circuit allowing the valve to torque seat.
Non-dp tests were conducted on each valve to verify that the closing torque switch settings would provido a justifiable margin for delivering the required thrust under full-flow design basis dp conditions. The SQN test procedure stipulates that the required thrust be developed at the torque switch trip (TST) point. This point is repeatable regardless of pressure or flow conditions. TVA does not take credit for inertial (total) thrust that varies (decreases) with increasing flow and pressure conditions. It should be noted that inertial thrust is evaluated for possible overthrust of the valve and valvo operator because inertial thrust is at its maximum value under static (non-dp) conditions.
In conclusion, the SQU approach to measure torque at the TST point under non-dp conditions verified empirically that the required thrust under full-flow design basis dp conditions would be met.
TEST RESULTS Test results are provided in the MOV Data Summary Tablo in this enclosure. A column labeled "As-Found Operability" has been subdivided j
into three operability classifications:
Acceptable As-found closing thrust at torque switch trip exceeded the required closing thrust and did not exceed the j
maximum allowable thrust.
Indeterminate As-found data was unavailable.
At the time TVA began to implement IEB 85-03, SQN was in the middlo of an extended outage and well into major MOV modification and testing effort for 10 CFR 50.49 environmental qualifications.
By tho time the Electrical Maintenanco Section began testing valves for the bulletin, the i
actual as-found condition had not been recorded and thereforo was indeterminate.
_ma
Unacceptable As-found closing thrust at the TST point was less than the required closing thrust or execeded the maximum allowable thrust.
Forty-four tests (stroke test in conjunction with MOVATS) were conducted on 42 MOVs. The two additional tests were conducted because valves 2-FCV-1-17 and 2-FCV-1-Si were tested under both non-dp and dp conditions.
Of the 38 tests conducted under non-dp conditions, 23 MOVs were found acceptable, 7 MOVs were found indeterminate, and 8 MOVs were found unacceptable.
Of the 6 tests conducted under dp conditions, 5 MOVs were found acceptable, and 1 MOV was found unacceptable.
The following list provides a simplified breakdown of the as-found results for each unacceptable MOV.
Required As Found Closing Thrust Valve ID Test condition closing Thrust TST Total 2-FCV-63-39 non-dp 14,190 lb 14.172 lb 21,253 lb 2-FCV-63-40 non-dp 14,190 lb 9,300 lb 17,998 lb 2-FCV-63-25 non-dp 14,190 lb 2,750 lb 14,115 lb 2-FCV-63-26 non-dp 14,190 lb 8,3[6lb 27,345 lb 2-FCV-62-90 non-dp 7.263 lb 5,660 lb 7,578 lb 1-FCV-62-91 dp 8,447 lb 7,535 lb 10,734 lb 2-FCV-63-48 non-dp 3,167 lb 3,000 lb 20,250 lb 2-FCV-63-22 non-dp 14,190 lb 7,813 lb 8,030 lb 2-FCV-1-17 non-dp 7,514 lb 6,517 lb 8,637 lb TVA evaluated each unacceptable valve to determino if the intended safety function had been compromised or lost.
In addition, adjustments were made to the torque switches to ensure that each MOV was left in an acceptable condition.
TVA determined that, even though these valves were found unacceptable, the intendo? safety function of the affected system would havo been maintained-For o detailed description of this evaluation, refer to r' i and 8 of the Mov data summary table in this enclosure.
c a.,2 mg g _.. - -. m.i. t
O SEQUOYAH NUCLEAR PLANT UNITS 1 AND 2 MOTOR-OPERATED VALVE DATA
SUMMARY
TABLE FOR IE BULLETIN 85-03 i
-r,m#
e a
e m.
....,. e s.
.s a
seg
%N
~q L
i PACE 1 g.
ATTACMENT A: ret!S105 2 MOTOR OPDATD WALTE DATA SMRAff TABLE y
SEQUOTAh HCLDR PtJET i
g-l6 IE BULLET!B 85-03
, y DES!CE BAS!$ TEST AS TOCED A5 LETT REQ'O BA!!gge g-l)
D:TT PRESS DITT P9ESS TS SETT!K T5 SETTIE AS TOCBD TNIUST AS T0Vuo CLOSIM A5 LETT CLOS!k; at tnumar r TALTE D TALTE OPRATOR VALTE TURCTION CfD/CLOGI OPEN/CLOSE OPD/CLOSE OPEE/CLOSE OPERABILITY (CLOSIBCD THRUST (LBS)
Dt357 (LBSD DICST 7 y (SEE NOTE elllSEE NOTE 823 (SEE 50TC s33 (SEE BOTE 9103 TST TOTAL TST 70!AL (CLOS!aCl g;
1 l[y
- CET*tITCCAL CHARGIN PWP (CCPI / RICH-READ IRJECT!05 SYSTER **********
j l
1-LCV 62-135 SMB-00 CCP SUCTICll TRON HST 200/200 (110 DP) 9/A/1.5 s/A /1.0 INDETDf!!NATI 4,854 L8 1CETERM19 ATE 1pDETunIDATE 5.678 LB 12.128 L8 24.629 18 ANCIOR/0ARLIM, 8*-1500 T/t CA, 1028-3 j
2-LCT-62-135 SR8-03 CCP SUCTICs TROH 200/200 (30 DP)
N/A /1.0 N/A /1.0 ACCUTA8LE 4,854 L8 9,578 LB 11,520 LB 9,578 L8 11,520 L8 24,629 14 g
RETUElllic WATER 89CBCt/CARLI!sC, STORACE TA5K (HST) j
- e 8*-1504 T/W CA, g
1020-3 j
1 1-LCT-62-136 IM9 -03 CCP SUCT 05 TROM ff;T 200/203 (B0 DP)
R/A /1.0 5/A /1.0 ACCEPTABLE 4,854 L8 5,255 LB 12,143 18 5,255 LB 12,143 La 24,629 L4 s
AsCuctostLIA;,
U 3* 1500 T/s CA,
- y th3 g
2-LCV-62-136
$P9-03 CCP SOCT!09 TICf! tv5T 200/200 (30 DPI 3/A /1.0 E/4 /1.0 ACCITTABLE 4.854 LB 6,748 LB 10,639 LB 6,748 LB 10,639 18 24,629 L8 I'
8 ssCa/:ouz, l[
8*-1508 T/t C1, g'
102t 3 j
[
1-TCV-62-132 DIS-00 CCP SUCTICS ftCil TOLL 1'E 200/200 (30 DP)
I/A /1.0 s/A /1.5 ACCEPTABLE 2,161 L8 7,706 L8 13,170 LB 5,341 L8 8,140 LS 32,376 L8
- y CONTROL 78K ITCTI g
ma,=ux.
j 4*-1508 T/V CA, I
J 2-TCT-62-132 SMB-00 CCP SETIM Tfolf VCT 200/200 (30 DP) 5/4 /1.0 3/A /1.25 ACCEP:ABLE 2,161 L8 2,451 LB 7,688 L8 5,694 LB 10,666 LB 32.376 18 ARC 908/DetLIN, 4*-1500 T/s CA, 1029-3 ae%
J l
1-TCT-62-133 Sul-00 CCP $5CT!04 ft2 TCT 200/200 (50 DP) 3/A /1.25 5/4 /1.8 ACCDTABLE 2,161 LB 5,681 18 11,831 LB 2,519 14 10,001 13 32,376 Lt
'I aetsot/DetLIM, 4*-1500 T/t &1,
.b
- =
G-
\\
iu
J
.O PACE 2 ATTACRENT A; RET!5105 2 PCT 00 CPflATED TALTE DATA $MMART TABLE 5!000fAA WUCLEAR PLANT g
it BULLETIB 85-03
< t,
,p y DE5!CB BASIS TEST AS FOUM AS LEFT RE0*D nuleus g
DIFF P9E55 DIFT PfESS 75 SETTIM T5 SETT!aG As FOURD TEMST AS FOUND CLOS!9G AS LETT CLD5!g nrenmaar r
'i TALTE 13 VALTE OPEIATOR TALVE FU9CT!05 OPEN/CLOSE OPEN/CLOSE OPEE/CLOSE OPED/CLOSE OPERA 8:LITT (CLD51El THRif57 (L85)
TNHST (L85)
TutUST
,y (SEE DOTE 011:5EE BOTE 82)
ISEE pot! 03) (SEE DOTE 010)
'L
.i 2-FCT-62-133 SMB-00 CCP SUCT108 Floft VCT 200/200 130 CPI g/A /1.0 5/A /1.5 ACCEPTABLE 2,161 LB 12,961 LB
!$,959 LB 4,001 L8 10,644 L8 32,376 la l
Ascnot/DAruz,
'g 4*-1500 F/s CA, 1329-3 j
1-TCT-63-19 SMB-0 CCP DILGARCE TO 2750/2750 2590/2590 5/A /2.0 B/412.0 ACCEPTABLE 14,190 LB 17,058 18 27,705 LB 16611 L8 26,205 L3 90,931 LB g
B0909 IN*ECTICR TAME ARCR0t/ TAIL!9C, it!T) 1RLET 4*-150C0 CD CA, y
13-12859 j
C O
2-TCT-63-39
$MS-0 CCP CISCRAR2 TO 2750/2750 (50 DP) 3/A /3.25 g/A /2.25 UBACCEPTABLE 14,190 LB 14.172 LB 21,253 La IL18212 25,%$ 13 90,931 LS 31T INLET ISEE BOTE est j
ANCER/DARL!K,
(*-15004 CD CA,
'M 93-12859 g
1-FCT-63-40 SMB-0 CCP DISCEAEE TO 2750/2750 2590/2590 t/A /2.5 N/A /2.0 ACCEPTA8ll 14,190 L8 18,562 LB 23,456 LB
' 17,974 LS 23,331 LB 90.931 18 j
l!T 15LET g
ABCR08/DetLIK, 4*-15000 DD CA, l
92-12859 g
'i 2-FCT-63-43 SP9 0 CCP CISCRARGE TO 2T50/2750 (50 P) 5/4 /3.0 5/4 /2.0 t9&CCE/ TABLE 14,190 L3 9.300 LB 17,998 L8 14 C49 LB 26,067 18 90,131 LB f
IIT I4LET (SEE BOTE e5)
ABCNOR/DAELISC, a
4*-15000 DD CA, b
93-12859 g
1 FCT-61-25 5!!s-0 817 CUTLET TO REACT 08 2750/2750 EM DP) 5/A /3.0
!!/3 /2.0 V$ ACCEPTABLE 14,190 L8 15,182 Le 24.04' LB 16.273 LB 22,836 LB '
10,931 LB
'b C0CLANT SYSTER (BC$1 AeC301/tafLIK, COLD-LEC !!UECTICN 4*-150M ED CA, FLot PATX
'b 93-12959
[
2-FCV-63-25
$MB-0 31T CUT.'ET 70 BCS 2750/2750 EM DP)
I/A /3.0 B/A /2.0 CDACCEPTABLE 14,190 La 2,750 L8 14.115 L8 16,951 Lt 25.808 18 90.931 L8 lb COWLEC IRJECTICS 45EE ETE B59 A8CE0tIDARLIK.
FLOi PATI E
4*-1500# CD CA, 93-12059 y
,w G
h 9
J
'f j v
b PA2 3 J
i ATTACBDT A: REVIS!05 2 90T03 CPE29fD VALVE DATA SUMAff TABLE SEQUOYA9 NUCLEAR PLANT IE sULLET!n ts-03 I.
DESICE BASIS TEST AS FOUND AS LETT RE0*D WIIBM g
DIFF PRESS DIFF PRESS 75 SETT!BC TS SETTIE AS FOUND TNBUST AS FOURD CLOSIE AS LETT CLOS 1bG ALIA9A4:2 TALVE 13 1ALTE OFDATOR TALVE TUNCTION OPE 5/CLOSE OPE 5/CLOSE OPEu/C!.0SE OPEt/CLOSE OPERASILITY (CLOSIKI THRUST (LBS)
TutuST (Lisl
. DRDST (SEE BOTE IIMSEE NOTE 82)
(SEE NOTE 131 (SEE NOTE 0101 TST TOTAL TST TOTAL (C
3
........................................................................:.........................................................................................................................................LOS!sC) g 1
[b 1-FCf-63 26 SRB-0 8!T CUILIT TO KS 2750/2750 190 DPI 5/A /1.0 B/1/2.75 !CETDMINATE 14,190 LB IEETERM:DATE IDDETEtnisATE 19,564 LB 23,040 LB 90,931 L8 d
'r COL 3-LEC IRJECT!05 Alt 3CR/ TAIL!aC, FLfB PATE 4'-15006 D3 CA, d
93-12859 2-FCT-63-26 SMB-0 IIT OCTLIT 70 BCS 2750/2750 (30 DP)
R/A /3.0 s/A /2.5 CNA*CIPIABLE 14,190 18 4,376 L8 27,345 LB 18,637 13 25,235 E3 90,931 18 d
COLD-LEC 152ECT!05 (SEE BOTE e5)
AKN01/tAILIK, FL(6 PATR 4*-15000 CD CA, d
?
93-12859
.4 1-FCT-62-90 S8!8-00 CCP DISCRAROE TO 2750/2750 150 DP) 5/A /1.0 5/4 /1.0 ACCEPTABLE 7,263 LB 9,731 LB 12,231 LB 9,731 L3
- 12. : _
,?
d 99tMAL CIAR3!5C PATI TELA 9, 3'-15006 CATE, O-08405-2 5 b
.- O 2-Trf-62-90 SRB-00 CCP DISCNAR0E TO 2750/2750 190 DP3 9/A /1.0 5/4 /I.25 UACCDIA.tLE 7,263 LB 5.660 18 7,578 LB 9,550 L8 10.981 L8 34.C0013 DORMAL CAARCIM PATI (SEE BOTE 173
- VELAS, b
3*-15000 CA%
O 88405-2 fb 1-FCV-62-91 SRS-06 CCP DISCHARGE TO 2750/2750 2200/2200 PSI 5/A /1.5 5/4 /1.5 UACCEP*ABLE 8.447 LB 7,535 LB 10,734 LS 9.429 Lt
!!.450 Lt 30,000 La d P
- VELAR, ER*AL C3 ARCING PATE (SEE SCIE 863 I
3'-150cs CAL 884;8
'd' i
[%
2-FCV-62-91 SnB-00 CCP D:SCAARCE TO 2750/2750 (30 DP' 5/A /2.5 9/A /1.,a ACCEPTAALE 7,263 LR 7,536 LS 8,723 L3 9,103 18 10.223 Lt 30,000 L8 j
J t
v!:.As, sote:, C AnzpCPAa f'b 3'-15009 CA*E, f
884c5-2 e
{b
...... SAFETT 18 JECT 100 (SI) PURPS / !!:Tt!!EDIATE-RIA3 IRJECTIOW STSTEN *******
I.
1-TCT-63-5 SRB-00 Com09 SET!05 70 200/200 (30 DP) 5/A /1.0 t/4 /1.8 ACCEPTABLE 4,354 LB 5,387 18 9,336 18 6,232 18 10.031 LB 24.629 LS 51 PU1!PS Ft05 ftST U
AsCre/DAal:nC, 8*-1500 F/9 CA,
' b 2028-38 O
w
f
(
(
(
(
(
f
(
8
\\f
(
(
(
f
(
l f
(*
(
f (e
S S
- S S
S S
S gE-Q I M
E Q
m 4
4 4
Q<
g a
_ge-@;:
3
=
n a
n n
x.
=
.-:i S
S S
S S
S 3
g O!
E E.
k E.
=
- E e.
e-a H :
o n :.:
3 S
S S
S S
S u g:
y
=
n a
s a
5 s
a s-e a
g n
3 S
S S
S S
di
=
=
a a
u E:
~
a, g
n
~
g :
S 8-
=
a a
a.
"E 5.
n "A
i S
2 3
3 3
3 3
E * * =
U:
O 4
K g
I 2
~
2 3
a a
a m
I
~ = g.
E Em 2
3 S
S S
S S
S n
?
-==
=
n:
E, e-
.. a,
..-u a ::
=
a
=
x s
_. c e a
a a
a y
y w.m -n_g:
-=a N
D E=
D E,
M
.=
n:
.a E=aE::
U nea a
"E"!
g b
h-g g
h e
u sR::
u
.a.
u U
- 1. 9 u
EgMg i n
g i e
e e
e d
e e
u a s _ ::
e e
.e
.e e
.e
.e g @,.r :
.,si d
d e
d -
e d
e u us_:
e e
.e
.e
.e
.e e.
g-e o
o a
a
-o e g.:
_e a_
a_
a_
a_
a_
a ag n!
E @ i a
y a
g a
R R
e e
e e
e a
~
-EE i R
R R
H E
R R
s go.
.-i ag E_
ten Eg In nSE uSE s :
s.
E gg-
.E g -
1 Si Eg an as u-
==
eug a
ag i
a as an ta n.s c
.s E i 8 ?
s.
s.-
s.-
agg 3
g3
= :
en g3 m
M a
,E aR_
u a
E !
)
Ei s
8 a
a a
a a
i E'
8 8
8 8
i vs us as us us
=
g.
g-e i
? ER9 I? l"RE ? sRE ? [EE ? )n( c =d 2
s n.
n
~
o
-c c
= sc
=
s v
.s=
su g
- a. s =eg vt g
Yn
? $ g Ei "A5 ?E2 n :
e vg e
vv g
vv U
u.
+
s.
v g
)
s:
ss ss
~
~
~
~
4 F
4 b
b
,3 i
..k d
J
m.
m d
J b
PACE 5 J
b.,
A!!ACMPERT A: HT!5109 2 d
fl0700 CPDATED VALTE DATA SUMART TABLE b
SEQUOTAN MCLEAR PLANT IE BGf.LETIS 85-03 N
des!Cs Basts TEST AS FOUND AS LETT REQ'D RAAINUN b
DIFF PRESS CITF PRESS TS SETTIDC T3 SETT pG AS 70U53 THtCST AS FOUM CLOS 15C AS LEIT CLOS 15C ALIMAKE O-TALTE 10 VA;VE OPEIATOR TALVE TUNCT108 CPEE/CLOSE OPD/CLOSE OPD/CLOSE OPEN/CLol;E OTEEASILITT (CLOSIBC)
THRU5' (LBS THBUST (1851 Tilt:3T (SEE NOTE elltSEE 80*E R21 (SIE 50TE 833 (SIE 80TE 010)
TST TOTAL TOTAL (CLO5IBC)
-l b
...................................................................................................................................................................................TST S.
a
'b 1-FCT-63-153
$!'B-00 DISCIA10E FROM $! 1500/1500 (M SP)
N/A /1.0 5/1 /1.5 IEETERMIn&TE 7.419 L8 IEETD!t:54?E 1EETDn!n&TE 10.632 L8 13.745 18 24.000 u J PU!'t 194 TO COLD-LEC
- VELAt, INJECTION TLOW PAM b
(*-9000 CA*E.
d!
t!.21-3 f GL 2-FCT-63-15s SM9 00 DISCBAR0E Fron St ! ? 0/1500 (90 DP)
R/A /1.0 B/A /2.9 ACCEPTABLE 7.410 18 12.406 LB 18.406 18 9,745 18 15.147 18 24.003 U d PtMP 25-1 TO COLD-tt:
- VILAN,
!p?ECTION FLOV PATE b
(*-9000 CATE, J
88521 3 b
1-FCT-63-22
$N5-0 CCMOS LISCNARCE T105 1750/1750 1435/1435 PSI BIA /2.0 5/A /2.9 A"CEP!ABLE 14.190 LB 16,404 L8 25.532 LB 16.404 L5 25.532 la 90.931 Lt J 11 PCHF5 TS COLD-LEC AS:508/D88ttsc, 1RJECTIon TLos Pain b
4*-15004 20 CA, U
93-12859 b
2-FCT-63-22 5"B -0 C0!fM05 DISCEARCE Ft04 1750/1750 44 DP) 5/A /1.5 R/4 /2.5 VRACCEPTABLE 14.190 L8 7.813 L8 0.030 L3 19.047 Lt 25,555 L3 90.931 LA O
$1 P"PPS TO COLD 4EC iSEE NOTE ett A#C32/DatL!ss, IRJECTION FLOW P43
- b 4*-150C8 DD CA, O
93-12859 a.......
,..g.-
- ... AnILIAff FEttWA*Et (ATV) $TS*D *..***
-I}b 1-FCT 1-15 Sil8-00 SIDA CDE84 TOR (SC) 1045/1085 (93 DP3 B/8 /1.5 g/A /1.0 !EE!D"!5ATF 7,514 L8 IEETERMIBATE
!EETDfl! BATE 9.126 15 18.957 LB 50.321 15 J
~t-LOOP 1 FAIR STIAM L
- 4Luct!I.
SUPPLT TC TURSIDE-
'fb 4*-6009 CA!!,
D0!VEB 4T!) AFI PUMP J
y A-M07-E-115B TVIl!9E Ib 2-TCT 1-15 SEB 00 SC LOOP 1 RAI3 SIDs 1045/1045 (30 DP t/A /1.0 s/A /1.5 ACCDTAtt!
7.514 LB 11.880 la 16.694 La 10.0M La 12.164 La 50,321 la J smtf n TD n,
- WALD003, P;nP T31!ft
,.-b 4*-6300 CA*E, J
.l 8-M07-9-1158 b
1-tCT-1-16 SRB-00 SC LOOP 41AIS $T149 1085/1085 (90 CP)
N/A /1.0 g/A /1.0 ACCEP!ABLE 7,514 La 9,715 LB 12.732 LB 9.715 LB 12.732 LB 50.321 La Y
.t smLT '3 n ni f s.-
usL50t3.
KRPT38 5E c.600 CITE.
i 9
g 8-M07-8-1154 s.
e t
7 7
7 3
O O-7 7
7 7
7 G
O O
7 7
7 7
7 8
O O
I 5
5 S
S S
S S
S S
E UN:
a a
a a
a u
3 3
I g Rgi i
i i
i i
i S
S S
S S
S S
S S
Ni a
s c
2 M
=
W at 9
9 2
2
=
0
=B 0-S 3
S S
S S
S S
S NI 3
A M.
g M
,=
R.
~
M M
2 2
3 S
S S
S S
3 E
di m
2 2
6 m
a u_H:
n m
M n
a Hg a
R
=
=
n a
8_
e, e EM :
eE :
E yg S
a S
S S
S S
S N:
g i
a O
3 g
a n
n n
~
=
=
a
=
=
5
~
3 e
Eas-BI 5
5 5
S S
S S
S S
n O t.
s M
3 3
3 3
3 3
3 8
8 e _g:
- U a
a a
d a
d a
a a
ur m:
Ee.
=
e:
gga=
y U.
U E.
- n. e -
ang:.
n, gg r
3 g-E O
"Eg::
E s
8 k, ~
b b
b k
g u
g g
I, p
l
=B 4
se$ :i E
9 n
n n
=
=.
=
=
c c
c c
~
=.
ag :
e gno. !
2 e
2 2
2 3
~ E5 l8e U:
e e
.a
.a 9
a a
a a
a e
~
~
i s
3 3
3 A
2 g*3@:
4 a
ns i 4
a a
a a
"4 EegS:
a a
a a
a a_
E g
a
.som g
-me
.~
e c
e
=
=
ae=
=
=
s
=
2 s
0 g
a j
gag i.
=
a a
a a
E
=
=
3 n.
g:. a -
g r
e M
=
"e-un,
- n~
na we m
e e n E-ee nE.
n6n nu.
ed5E ukw em
- s5E
- R 1*e.=
.e.r i
n-R
=
U :
2 =
b n
e i
'; E M Rat i
EnD g:: E gnD
- um.
n n*
W i Mn" og*
ms:
an*
-aE Iag ige n
e r :
.pt
-a.
a.
ns j.
u" ga g'm gc gp gyg g!
- .)
a D
s 3 :
- I 8
8 8
8 8
1h I
W j K
5 K
R E
E R
.d.
M*
. ii,
, M c.
C
[dB
[M*3; 5 t.1 ;
=.
8 :: g u
g
..i
=. G3; n.
3; n.
a; a.
- L.n- -.n.
?
.u 8 0
? #8
?
d,!
g uay'S Q
- S.
g g t { e?
g
?
n-a gB p
Elg n
= :
e sty g
-t i
e e1 g
-.s.
j g
z ei a
-e i, N r,
4 e
.>\\ c>
.-.- a
Page 7 ATTACHME;;T A; REVISION 2 MOV DATA SUP91ARY TABLE SEQUOYAH NUCLEAR PLANT f'
IE BUttETIN 85-03 1
1' h0TES 1.
TVA agreed to test 1 MOV in each of the test categories 1. 2. and 3 under full-flow dp conditions (total of 3 MOVs). Reference comitment item 5 of the May 12. 1986 submittal.
2.
Torooe switch settings in the open direction have been deleted for all 21 MOVs on each unit as discussed in the May 12. 1986 submittal. For this reason all lorque switch settings and thrust values are given in the closing directiosi.
3.
Valve Operability Designattor.s:
Acceptable As-foond closing thrust at torque switch trip exceeded the required closing thrust and did not exceed the maximum allowable thrust.
Indeterminate As-found data was unavailable. At the time TVA began to implement IEB 85-03. SON was in the middle of an
~
extended outage and well into a major MOV modification and testing effort for 10 CFR 50.49 environmental qualification. By the time the Electrical Maintenance Section began testing valves for the bulletin. the actual as-found condition had not been recorded and therefore was indeterminate.
{
s t
4 Unacceptable As-found closing thr*st at TST trip was less than required closing thrust or exceeded the maximum allowable thrust.
E
{'
4 Valve 2-FCV-63-22 has a reoutred seating thrust of 19.190 pounds; however, the as-found closing thrust was 7.813 pounds. which is e
unacceptable. Because this valve is required by SON technical specifications to remain in the open position with power rerrowed (modes 1. 2. and 3). the unacceptable as-fo;nd closing thrust would not have prevented this valve from performing its safety 7
function to rtmain open, I
5 t
Page 8 3
ATTACHMENT A; REVISION 2 5.
This valve is considered operable even though the as-found thrust data was unacceptable. This valve is rcqui ed to open upon a safety tajection signal to provide a boron injection flow path. Because this valve has no torque / torque bypass switches in the opening circuit, the valve would have performed its intended safety function to open.
6.
1-FCV-62-90 and -91 are the two outboard containment isolation valves in series on the normal charging line. Even thou h 1-FCV-62-91 was found unacceptable. the safety function (containment isolation anj isolation of normal charging during afety injection) was maintained by 1-FCV-62-90 and its acceptable as-found test results.
7.
2-FCV-62-90 and -91 are the ;wo outboard containment isolation.alves in series on the normal charging line. Even though 2-FCV-62-90 was found unacceptable, the safety function (containment isolation a...
isolation of normal charging during safety injection) was maintained by 2-FCV-62-91 and its acceptable as-found test results.
8.
2-FCV-1-17 and -18 are two series valves on the steam supply line to the turbine-driven auxiliary feedwater pump. These valves isolate on high temperature (i.e., steam line break) inside the pump room. Although 2-FCV-1-17 was found unacceptable the intended isolation function was naintained by 2-FCV-1-18 and its acceptable as-found test results.
9.
2-FCV-63-48 was detennined to be operable even though the as-found thrust data was unacceptable. For determination of operability, the a2-found closing thrust at TST (3.000 pounds) was compared with the thrust requirement under dp operation (3.167 pounds). This difference (167 pounds) is less than 3 percent of the thrust at the TST point. The additional seat,ing action
,o l j.
provided by this s:nall difference is considered to be inconsequential for valve closure and operability. The ir.?rtial thrust reflected in the as-found total thrust (i.e.
20.250 pounds) also provides additional margin for ensuring valve closure. TVA Ii conside n this valve to be operable.
5 10.
These values are the thrust values that were in effect at the time of test. As with any engineering values, these required f
thrust values are subject to change. TVA's design change control process will ensure that new thrust requirements are h
incorporated into the test procedures.
1 2
p i
i I:m.