View source for GO2-86-493, Forwards Response to IE Bulletin 85-003, Motor-Operated Valve Common Mode Failures During Plant Transients Due to Improper Switch Settings. Info Encl Satisfies Items a-e of Bulletin

{{Adams
| number = ML20210U378
| issue date = 10/01/1986
| title = Forwards Response to IE Bulletin 85-003, Motor-Operated Valve Common Mode Failures During Plant Transients Due to Improper Switch Settings. Info Encl Satisfies Items a-e of Bulletin
| author name = Sorensen G
| author affiliation = WASHINGTON PUBLIC POWER SUPPLY SYSTEM
| addressee name = Martin J
| addressee affiliation = NRC OFFICE OF INSPECTION &amp; ENFORCEMENT (IE REGION V)
| docket = 05000397
| license number = 
| contact person = 
| document report number = GO2-86-493, IEB-85-003, IEB-85-3, NUDOCS 8610090505
| document type = CORRESPONDENCE-LETTERS, INCOMING CORRESPONDENCE, UTILITY TO NRC
| page count = 8
}}

=Text=
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Washington Public Power Supply System 3000 George Washington Way P.O. Box 968 Richland, Washington 99352-0968 (509)372-5000 October 1, 1986 Docket No. 50-397                                    G02-86-943 Mr. J. B. Martin, Regional Administrator U.S. Nuclear Regulatory Commission Region V 1450 Maria Lane, Suite 210 Walnut Creek, California 94596

==Dear Mr. Martin:==

==Subject:==
NUCLEAR PLANT NO. 2 RESPONSE TO IEB 85-03

==Reference:==
: 1)    IEB 85-03 " Motor Operated Valve Common Mode Failures During Plant Transients Due to Improper Switch Settings", dated November 5,1985
: 2)    Letter, G02-86-503, G.C. Sorensen (SS) to J.B. Martin (NRC), same subject, dated May 28, 1986
: 3)    Letter BWROG-8645, T.S. Pickens (BWROG) to J.M. Taylor (NRC I&E), Boiling Water Reactor Owner's Group Report NEDC-31322 "BWR Owner's Group Report on the Operational Design Basis of Selected Safety-Related Motor-0perated Valves", dated Septebmer 2,1986 The Reference 1) IE Bulletin requested response by May 14, 1986, however due to the subject matter the BWR Owner's Group (BWROG) requested and obtained deferral of the response in order to perform a generic review of the issue. Reference 2) notified your staff that the Supply System would participate with the BWROG in addressing the bulletin and would provide further submittals upon completion of the BWROG report tenta-tively scheduled for September 1986. Accordingly, with issuance of Reference 3), the BWR0G report the Supply System hereby provides the attached information satisfying items a through e of the subject bulletin.
Should you have any further questions, please contact Mr. P. L. Powell, Manager, WNP-2 Licensing.
Very trul yours, C       wn G. C. Sorensen, Manager Regulatory Programs PLP/bk Attachment cc:   J0 Bradfute - NRC NS Reynolds - BLCP&R E Revell - BPA Document Control Desk NRC Site Inspector 8610090505 861001                                                          'N PDR    ADOCK 05000397                                                       y)
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NUCLEAR PLANT N0. 2
,                                 RESPONSE TO IEB 85-03
: a. Review and dment the design basis....
This task was completed by Reference 3) and documented by Report NEDC-31322, "BWR Owner's Group Report on Operational Design Basis of Selected Safety-Related Motor-0perated Valves." This report was reviewed by the Supply System and the WNP-2 plant specific values are delineated on the enclosure. (This task is considered com-plete). It should be noted that even though portions of the WNP-2 RCIC system are no longer considered safety-related, the system is still included in this response for information purposes. The overall RCIC system, except for the isolation valves, is not safety related.
: b. Using the results from item a. above, establish the correct switch settings....
Presently, torque switches at WNP-2 are set between the minimum and maximum specified by the valve manufacturer. Valve-operator inspec-tions were conducted during the first refueling outage (April-May 1986) in response to concerns raised by various valve related IE Bulletins including 85-03 and 86-03. These switch settings are tabulated in the enclosure. At WNP-2, safety related valves which have to open, have the open torque switch jumpered (hard-wired) and the opening circuit provided with a series limit switch to stop travel at 100% open. For valves that have to close, the torque switch is bypassed by a geared limit switch which remains closed throughout most of the valve's stroke (98%) and opens just before the valve reaches the fully closed (seated) position. Furthermore, WNP-2 is in the process of obtaining a motor-operated valve (M0V) diagnostic / test equipment program for integration into the WNP-2 plant maintenance program. Technical direction for incorporation of this program, maintenance procedure changes and data gathering will be accomplished accordingly.
: c. Individual valve settings shall be changed, as appropriate, to those established in itan b. alxwn. Whether the valve setting is chanced or not, the valve will be dcmonstratul to be operable....
The valves listed on the Valve Data Summary are periodically checked for proper operation by Surveillance Procedures 7.4.5.1.11, HPCS System Operability Test, and 7.4.3.3, RCIC Operability Test. The main purpose of the valve cycling is to record the opening and closing times. The calculated opening and closing differential pressures along with the approximate differential pressures to which these valves are subjected during surveillance testing, are listed on the enclosure Valve Data Summary. Since the valve differential pressures encountered during surveillance testing do not approach the calculated values, it is the Supply System's intent to utilize the diagnostic / test equipment program for deter-mining and verifying the valve thrust requirements at the differen-tial pressures listed in the enclosure.
: d. Prepare or revise s veadures....
Maintenance PPM 10.25.4, Testing Motor Operated Valve Motors and Controls, and PPM 10.25.74, Adjustment of Geared Limit Switches in Motor Operated Valves, will be revised by Plant Maintenance to in-clude the diagnostic equipment and procedures once this information has been obtained.
: e. Within 180 days of the date of this bulletin, subnit a written report to the NIC that: (1) reports the results of item a. and (2) contains the program to acomplish itens b. through d. above including a schedule for empletion of these items.
The following schedule is provided:
December 1986        Finalize procurement of the MOV diagnostic /
test equipment system.
March 1987           Revise Maintenance Procedures, as required to include the diagnostic / test equipment.
April 1987           Train Personnel in the use of the M0V diagnostic /
test equipment.
April-May 1987      Gather valve baseline, signature data on safety related valves during WNP-2's second refueling outage.
October 1987        Final closecut of open items froin IE Bulletin 85-03.

STATE OF WASHINGTON       )                       

==Subject:==
IEB 85-03'
                            )
County of Benton          )
I, G. C. SORENSEN, being duly sworn, subscribe to and say that I am the Manager, Regulatory Programs for the WASHINGTON PUBLIC POWER SUPPLY SYSTEM, the applicant herein; that I have full authority to execute this oath; that 1 -
have reviewed the foregoing; and that to the best of my knowledge, information and belief the statements made in it are true.
DATE     /d - /             ,1986 0         W
                                            / G. C. Sorensen, Manager
* Regulatory Programs On this day personally appeared before me G. C. Sorensen to me known to be the individual who executed the foregoing instrument and acknowledge that he signed the same as his free act and deed for the uses and purposes therein mentioned.
GIVEN under my hand and seal this       /    day of ()Ple[qX               ,1986.
Grmo G          A     0 Notary Public in and for the State of Washington Residing at     ?iwro    sk    // )M_

Page 4 ENCLOSURE VALVE DATA 

==SUMMARY==

NOTES
: 1. Valve designations as they appear in Report No: NEDC-31322, BWR Owner's Group Report on the Operational Design Basis of Selected Safety-Related Motor Operated Valves, dated September 1986.
: 2. Note Deleted
: 3. Opening torque switch is jumpered throughout travel. Closing torque switch is bypassed by Limit Switch No. 7* until the valve is approximately 95%-99% closed.
: 4. Opening torque switch is jumpered throughout travel .                                         Closing torque switch is bypassed by Limit Switch No.16* until valve is approximately 95%-99% closed.
: 5. Opening torque switch is jumpered throughcut travel .                                         Closing torque switch is bypassed by Limit Switch No.1* until the valve is approximately 5% closed.
: 6. Opening torque switch is bypassed by Limit Switch No. 5* until the valve is approximately 5% open. Closing torque switch is bypassed by Limit Switch No. 7* until the valve is approximately 95%-99% closed.
: 7. Opening torque switch is bypassed by Limit Switch No. 5* until the valve is approximately 5% open. Closing torque switch is bypassed by Limit Switch No.16* until the valve is approximately 95%-99% closed.
* Switch designation per Limitorque Standard Valve Operator Wiring Diagram.
: 8. Valve capable of 2160 PSID actually supplied by the valve vendor.
: 9. Turbine Trip and Throttle Valve not included in the analysis because the valve does not have a safety function and is spring-loaded to close.
                                                                                                 . - , , , , --n - - - - - , -    ,        , , , . - - , , --r

                                              ^
am ENCLOSURE                                                                        -
                                                                             ~VALYE DATA SID9tARY                                                  Page 1        -
Diff Press     Diff Press   Torque SW             Design Spec  Test BWROG                                                                                Opening        Closing       Settings  Limit SW    Pressure   Pressure Valve No   WNP-2                                 Valve Oper                                                                 Setting       (PSID)   (PSIG)
Valve Description    ( PSID)        (PSID)       Open/Close
                *f alve No. Size / Type Manfacturer      Model (Note 1) 15.0         1.5/1.5    (Note 3)         150     <15 Anchor Darling      91B-000-25 HPCS-P-1 Suction          --
!        3      HPCS-Y-1    14"/ GATE Supply from Condensate Storage Tank (CST) 1450.0     1500.0       1.25/1.0    (Note 5)       1500     <200 Anchor Darling      3MB-4-200  HPCS-P-1 Discharge 1      HPCS-V-4    12"/ GATE s'                                                                 to Reactor Yessel 1468.0       1.5/1.0    (Note 6)       1500     >200 HPCS-V-10 10*/ GLOBE Anchor Darling        348-3-150  Test bypass from           -
5 HPCS-P-1 to (Note 8)
Condensate Storage Tank 1468.0       1.5/1.0     (Note 6)      1500     p200 HPCS-V-11 10*/ GLOBE Anchor Darling        SMB-3-150   Test bypass from          -
6                                                                                                                                     (Note 8)
'                                                                       HPCS-P-1 to CST 1540.0       1.5/1.5     (Note 3)       1500     <200 Anchor Darling      58-0-25    HPCS-P-1 minimum         1500.0 2      HPCS-V-12 4"/ GATE flow valve 50.0      1.75/1.75   (Note 3)        150     <10 Anchor Darling      SMB-2-60   HPCS-P-1 Suction              50.0 4      HPCS-V-15 18"/ GATE Supply from Suppression Pool 1485.0      4.0/2.75    (Note 6)       1500     > 200 HPCS-V-23 12"/ GLOBE Anchor Darling         918-4-150  Test bypass from            --
7 HPCS-P-1 to (Note 8)
Suppression Pool l

m
                                                                                                                                                                                                                               ~
ENCLOSURE VALVE DATA S19 NARY Page 2 Diff Press    Diff Press Torque SW               Design Spec   Test SIROG                                                                                                            Opening       Closing     Settings   Limit SW     Pressure    Pressure WNP-2 Valve Oper                                                    Open/Close Setting        (PSIO)     (PSIG)
Valva No                                                                     Model         Valve Description     (PSID)        (PSID)
(Nota 1) Valve No.                             Size / Type Manfacturer 1150.0   1150.0     1.0/1.0     (Note 4)       1337         0 RCIC-V-B                Borg-Warner       SMB-00-7.5   Outboard Contain-4"/ GATE III ment Isolation on Steam Supply to RCIC turbine 63.5    1.0/1.0     (Note 4)         125       < 20 Velan            SMB-00-15    RCIC Pump Suction          --
3                  RCIC-V-10 8"/ GATE                                     Supply from Con-densate Storage Tank (CST) 2.5/2.5      (Note 4)       1350          0 SMB-0-40     RCIC Pump Discharge        1325.0    1325.0 1                 RCIC-V-13 6"/ GATE       Velan to Reactor Vessel 1325.0     2.0/2.0     (Note 4)       1500       >1020 Borg-Warner       SMB-00-10   RCIC-P-1 Mininsa            1325.0 2               RCIC-V-19 2"/ GLOBE Flow Valve 1325.0     1.5/1.5     (Note 4)       1325       >1020 Anchor Darling    SMB-2-60    Test bypass from            1325.0 5              RCIC-V-22 6"/ GLOBE                                    RCIC Pump (Note 8)
I                                                                                                                                   (RCIC-P-1) to CST 51.5    1.5/1.5      (Note 4)        125          <10 Borg-Warner       SMB-00-15   Pump RCIC-P-1                 51.5 4              RCIC-y-31 8*/ GATE Suction Supply from Suppression Pool                                    .
4.25/4.25    (Note 5)   920-1020      920-1020 Anchor Darling     91B-0-15   RCIC Turbine Steam         1150.0    1150.0 I            RCIC-V-45 4"/ GLOBE                                    Supply Admission Valve (Note 5)       1500      > 1023 SMB-000-5  RCIC lube oil               1325.0   1325.0     1.0/1.75 9            RCIC-V-46 2"/ GLOBE      Borg-Warner cocler-cooling water supply valve (Note 7)         1300        0 SMB-0-40   Test bypass from            1325.0   1325.0     2.0/2.0 6            RCIC-V-59 6"/CATE         Velan RCIC-P-1 to CST l
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ENCLOSURE VALVE DATA SLM4ARY                                                                     "
Page 3.        ,
Diff Press  Diff Press   Torque SW             Design Spec    Tes t BIROG Valve Oper                        Opening     Closing         Settings Limit St   Pressure     Pressure Valve No   WNP-2 Open/Close  Setting     (PSID)      (PSIG)
Size / Type Manfacturer        Model       Valve Description    (PSID)      (PSID)
(Note 1) Valve No.
1150.0   1150.0        1.5/2.0    (Note 4)   1377           0 II     RCIC-V-63 10"/ GATE      Velan             218-2-60   Inboard Containment Isolation on Steam Supply to RCIC Turbine 28.0     43.0        1.5/2.0   (Note 4)       45          0 VI     RCIC-V-68 10*/ GATE      Velan             SMB-0-15   RCIC Turbine Exhaust to Suppression Pool RCIC Vacuum Pump           --       45.0        3.0/2.0   (Note 4)     -             0 7      RCIC-V-69 1-1/2"/ GATE Borg-Warner         SMB-000-5 RCIC-P-2 Discharge to Suppression Pool 1150.0  1150.0         3.0/3.0   (Note 4)   1250          920-1020 IV     RCIC-V-76 1"/CLOBE       Borg-Warner        91B-000-5 RCIC Turbine Steam Supply Line Warm-up Valve (Note 9)      1.0/3.0    (Note 5)  1250            0 X      RCIC-V-1    3"/ GATE      Schutte-Koerting 340-000-5  RCIC-Turbine Steam      (Note 9)
Trip-Throttle                 .
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