View source for B11916, Provides Supplemental Relief Request Info Re Inservice Insp & Testing Program.Main Feed Sys Check Valves 2-FW-5A & 2-FW-5B Cannot Be Tested Per ASME Boiler & Pressure Vessel Code.Periodic Valve Disassembly Suggested

{{Adams
| number = ML20138R257
| issue date = 12/16/1985
| title = Provides Supplemental Relief Request Info Re Inservice Insp & Testing Program.Main Feed Sys Check Valves 2-FW-5A & 2-FW-5B Cannot Be Tested Per ASME Boiler & Pressure Vessel Code.Periodic Valve Disassembly Suggested
| author name = Opeka J
| author affiliation = NORTHEAST NUCLEAR ENERGY CO., NORTHEAST UTILITIES
| addressee name = Thadani A
| addressee affiliation = NRC OFFICE OF NUCLEAR REACTOR REGULATION (NRR)
| docket = 05000336
| license number = 
| contact person = 
| document report number = B11916, NUDOCS 8512310128
| document type = CORRESPONDENCE-LETTERS, INCOMING CORRESPONDENCE, UTILITY TO NRC
| page count = 4
| project = 
| stage = Supplement
}}

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sEC [                                                       P O BOX 270 HARTFORD. CONNECTICUT 06141-0270 k    k   J   $2U[           , $'.".                                                    (203) 665-5000 December 16, 1985 Docket No. 50-336 B 11916 Director of Nuclear Reactor Regulation Attn: Mr. Ashok C. Thadani PWR Project Directorate No. S U. S. Nuclear Regulatory Commission Washington, D. C. 20555

==References:==
(1)   3. F. Opeka letter to E. J. Butcher, dated June 27, 1985.
(2)   3. F. Opeka letter to E. J. Butcher, dated August 30, 1985.
Gentlamen:
Millstone Nuclear Power Station, Unit No. 2 Inservice Inspection and Testing Program Supplemental Relief Request Information In References (1) and (2) Northeast Nuclear Energy Company submitted the Inservice Inspection Program and associated relief requests for the second ten-year inspection interval of Millstone Unit 2. Since that submittal, operating experience has identified the need for additional relief from inservice testing requirements for two valves, pursuant to 10CFR50.55a(g).
Valve 2-FW-5A and 2-FW-5B, the Main Feed System check valves at the i
containment penetration, cannot be tested in accordance with the ASME Boiler and Pressure Vessel Code, Section 11 requirements. In addition to operational interference with testing requirements previously identified in Reference (1), it has recently been identified that the valve obturator is not attached to the valve operator.       Thus the alternative testing specified in Reference (1) does not provide assurance that the valve obturator will close promptly on cessation or reversal of flow. There is no means of testing the valves that will meet the ASME Code requirements. The attached, supplemental relief request recognizes this and identifies that, in addition to valve operator testing, valve obturator freedom of movement will be verified by periodic valve disassembly.
Pursuant to the requirements of 10 CFR 170.12(c), enclosed is the application fee of $150.00. We trust you will find this information satisfactory.
8512310128 851216                                    Very truly yours, PDR   ADOCK 05000336 0
NORTHEAST NUCLEAR ENERGY COMPANY y m _ n/sc . recH sw m T AD - D. cRUTCHFIEI.D (Ltr only)
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    .- 3 Date: Noveaber 29, 1985 Revision:          1 RELIEF REQUEST BASIS SYSTEM: FEEDWATER
: 1. Valve:                 2-FW-5A, 5B Category:              BC Class:                 2                                            .
Function:              Prevent backflow in main feedline to No. I steam generator.
l Test Requirement:      Exercise (full stroke) for operability.
every three months. Take stroke time measurements per IWV-3410. Test for fail safe operation.
Bas.is for Relief:     Valve exercise during plant operation would require stopping feed flow to the steam generator.with consequent plant shutdown.
Valve has no part stroke capability. Valve operator is not connected to obturator.
Obturator cannot be exercised during cold shutdown or refueling.
L

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Date: November 29, 1985 Revision:          1 Alternate Testing:   Exercise valve operator, measure stroke time and fail-safe test during cold shutdown.
Disassemble one valve each inspection period to verify obturator freedom of moven 9t.
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V21v3         Class /                Feedwater                         Size Valve            Normal      Test      Relief      Testing
          ~ Number      Category            25203-26126. Sh. 4                         Type (Inched         Actuation Position Requirements Requests   Alternative 2- W-5A          2BC     Feedwater to S.C. I                          18      stop    A0       0          Q           X           QCS*
CK                          FT          X           FTCS*
2- W-5B          2BC     Feedwater to S.G. 2                           18     STOP    A0       0          Q           X           QCS*
CK                          FT          X           FTCS*
2-W-7            3C      Steam Aux. pp. Discharge                       6     CK      -
C          Q           X     ,    QCS
 ,        2-Iv-8A          3C      Aux, pp. A Discharge                           4     CK      -
C          Q           X          QCS 2- W-8B          3C '    Aux. pp. 8 Discharge                           4     CK      -
C          Q           X          QCS F
2-W-12A          2BC     Aux. Feedwater to S.C. I                       6     STOP    A0      .C          Q           X          QCS CK                          FT          X          ITCS 4
2- W-12B                 Aux. Feedwater to S.C. 2
.i                         2BC                                                    6     STOP    A0       C                      X
 '                                                                                                                  Q                     -QCS CK                          FT          X           FTCS      .
2- N-32A         3C      Aux. IV Pump A Recire. Check                   1.5   CK      -
C          Q 2- N-32B         3C      Aux. IN Pump B Rectre. Check                   1.5   CK      -
C          Q                               .
2-W-33           3C      Terry Aux. IV Pump Recirc. Check               1.5   CK      -
C          Q 2-W-43A          3B      Aux. W Reg. Valve to Eo. 1 S.C.                4     CL      A0       C          Q 2-l%-435-        3B      Aux. W Reg. Valve to No. 2 S.C.                4     CL      A0       C         .Q IV-#.4         3B      Aux. IV Pump Dis. Cross Tie                    6     CA      tio      C          Q 2-N-56A          3B      Aux. IV Reg. Valve Bypass                      6      CA     H         C         Q 2- N-565         3B      Aux. IV Reg! Valve Bypass                      6      CA     H         C         Q CDissesemble one valve per period to verify obturator freedom of movement.
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