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PART 21 IIEiTIFICAsiON NO.
PART 21 IIEiTIFICAsiON NO.       % -- m- cot               CUPANY (WE.MIA     w               bb4v
% -- m-cot CUPANY (WE.MIA bb4 w
      . DAT5 0: LETTER.       u\ulto               D00(ET NO. D6-%t MM   ~
v
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. DAT5 0: LETTER. u\\ulto D00(ET NO. D6-%t MM DATE DISTRIBiITED uNbo n m-ORIGIRALREPORT SlPPLBOfTARY7
DATE DISTRIBiITED       uNbo n m-           ORIGIRALREPORT           SlPPLBOfTARY        7
~
                                              "
DISTRIBLITION:
DISTRIBLITION:
REACTOR (R)   X                   FLEL CYCLE &                   SAEGilARDS (S)                       1 IEFILES                           IEIU (I9                       IE FILES                             I A"/ E I                           IE FIES                        AD/SG tt6 in'RCI--                           AD/FRSI                         AD/ROI EGI0iG I,II,III,IV,V               EGIONS I,II,III,IV,V           EGIGG I,II,III,IV,V VEND 3R BR. R-IV                   VE}00R BR. R-IV                 VENDOR BR R-IV LEB / IPA FIB 5715                 ffSS / FCFS     SS-396       .NRR/D3L AEDD         FTB 7602             LDEB / IPA     fib 5715         IPES / SG SS-881                     i NRR/ DOE                           AE0D           FIG 7602         LDEB / IPA       f4G 5715
REACTOR (R)
                                                            ~
X FLEL CYCLE &
NRR/DSI                           ASLEP FM       450             AEOD             [1B 7602
SAEGilARDS (S)
                                      ~~
IEFILES IEIU (I9 IE FILES IE FIES AD/SG A"/ E I t t 6 in'RCI--
SAD /SP fig-7210A               ASBP       E/W 450
AD/FRSI AD/ROI EGI0iG I,II,III,IV,V EGIONS I,II,III,IV,V EGIGG I,II,III,IV,V VEND 3R BR. R-IV VE}00R BR. R-IV VENDOR BR R-IV LEB / IPA FIB 5715 ffSS / FCFS SS-396
                                -
.NRR/D3L AEDD FTB 7602 LDEB / IPA fib 5715 IPES / SG SS-881 NRR/ DOE AE0D FIG 7602 LDEB / IPA f4G 5715
NRR/ DOL CEhTPAL FIES       016       CEhTRAL FILES           016 ASLBP     FM 450                                                 CBERAL FIES           (GR0:0 CBHPAL FILES ( GRON)
~
CBERAL FIES         016             PDR                           CENTRALFILES           SS-396 CBERAL FILES     (GFDD             LPDR                         PDR                                 .
NRR/DSI ASLEP FM 450 AEOD
                                        '
[1B 7602
PDR                                 TERA                         LPDR                         :s LPDR                                                               TEPA                 .
~~
                                                                                                        ~G     hj
SAD /SP fig-7210A ASBP E/W 450 NRR/ DOL CEhTPAL FIES 016 CEhTRAL FILES 016 ASLBP FM 450 CBHPAL FILES ( GRON)
_            _    -c
CBERAL FIES (GR0:0 CBERAL FIES 016 PDR CENTRALFILES SS-396 CBERAL FILES (GFDD LPDR PDR PDR TERA LPDR
_
:s hj LPDR TEPA
OS
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                                                                                        .              .a ACTION:
-c OS
PRELIMI?MRY EVALUATION OF THE' ATTACHED REPORT. ItOICATES LEAD RESPONSIBILITY FdR                         l FOLLOWJP AS SFDhN BELOW:
.a ACTION:
                                                          .
PRELIMI?MRY EVALUATION OF THE' ATTACHED REPORT. ItOICATES LEAD RESPONSIBILITY FdR FOLLOWJP AS SFDhN BELOW:
IESS                   OTER     _
IESS OTER
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                          "                                                        -
    .      .    ,    ,    .      ..  -  .      :      ,    ..~.   .  .,-  .
                                                                                          .
                                                                                                .        .-


  . _    _-
TENf4ESSEE VALLEY AUTHORITY DD D
TENf4ESSEE VALLEY AUTHORITY                   DD         D
CH ATTANOOG A. T EtWESGCC.3W.M
        ,,                              CH ATTANOOG A. T EtWESGCC .3W.M           *ED
*ED T;D-\\M -001 1
      '
1100 Chestnut Street Tower II 1
T;D-\M -001 1 1100 Chestnut Street Tower II                       1 November 6, 1980 1r. James Ps. O'Reilly, Director Office of In ection and Enforcement                 -
November 6, 1980 1r. James Ps. O'Reilly, Director Office of In ection and Enforcement gig
                                                                                      =
=
gig U.S. Nuclear R 'ulatory Co:ncission Region II - Suit 3100                                                         g 101 Marietta Stree Atlar:a, Georgia 30
U.S. Nuclear R 'ulatory Co:ncission Region II - Suit 3100 g
101 Marietta Stree Atlar:a, Georgia 30


==Dear Hr. O'Reilly:==
==Dear Hr. O'Reilly:==
                                                      .
BELLEFOUTE NUCLEAR PLANT UNITS 1 AND 2 - LORG-WARNER 3" MOTOR OPERATED GATE VALVES - NCh'S 0020 AND BLN Mr.B 8005 - SUPPLEFENTAL REPORT On March 17, 1980, R. W. Wright, NRC-0IE Region II, uns inforced that NCR 0020 was determined to be reportable in accordance with 10 CFR 50.55(e). This was followed by our final repcrt dated April 16, 1980.
BELLEFOUTE NUCLEAR PLANT UNITS 1 AND 2 - LORG-WARNER 3" MOTOR OPERATED GATE VALVES - NCh'S 0020 AND BLN Mr.B 8005 - SUPPLEFENTAL REPORT On March 17, 1980, R. W. Wright, NRC-0IE Region II, uns inforced that NCR 0020 was determined to be reportable in accordance with 10 CFR 50.55(e). This was followed by our final repcrt dated April 16, 1980.
As a result of now information received subsequent to the final report, related NCR BLU MEB 8005 was determined to be reportable in accordance with 10 CFR 50.55(e). Enclosed is our supplemental report. We consider 10 CFR
As a result of now information received subsequent to the final report, related NCR BLU MEB 8005 was determined to be reportable in accordance with 10 CFR 50.55(e). Enclosed is our supplemental report. We consider 10 CFR
            - Part (1 to be applicable to this deficiency. We expect to submit our next report by Fcbruary 13, 1981.
- Part (1 to be applicable to this deficiency. We expect to submit our next report by Fcbruary 13, 1981.
If you have any questions concerning this catter, please get in touch with D. L. Lambert at FTS 857-2581.
If you have any questions concerning this catter, please get in touch with D. L. Lambert at FTS 857-2581.
                                                          ,Very truly yours, TE!'UESSEE VALLEY AUTHORITY
,Very truly yours, TE!'UESSEE VALLEY AUTHORITY L. M. Mills, Manager Nuclear Regulation and Safety Enclosure cc:
            .
Mr. Victor Stello, Jr., Director (Enclosure)/
            -
Office of Inspection and Enforcement U.S. Nuclear Regulatory Comcission Washington, DC 20555 An Equal Oppertunity Employer 9
L. M. Mills, Manager Nuclear Regulation and Safety Enclosure cc:   Mr. Victor Stello, Jr., Director (Enclosure)/
Office of Inspection and Enforcement U.S. Nuclear Regulatory Comcission Washington, DC 20555
                                            .
                                                              .
An Equal Oppertunity Employer 9


1
ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 BORG-WARNER 3" MOT 0h OPERATED GATE VALVES NCR'S 0020 AND BLN MEB 8005 10 CFR 50.55(e)
* 1
SUPPLEMENTAL REPORT Description of Deficiency During a test program conducted by Duke Power Company at Marshaltown Steam Station, Borg-Warner's standard 3",1500-pound motor operating gate valve failed to fully close when actuated under operating conditions. The operating conditions were 2485 lb/in2 at 6500F with a flow rate of 220,000 pounds per hour of steem, which is equivalent to a velocity of approximately 40 feet per seco 4d.
* ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 BORG-WARNER 3" MOT 0h OPERATED GATE VALVES l
Under these conditions, the valve closed to within 10 percent of full closure.
NCR'S 0020 AND BLN MEB 8005 10 CFR 50.55(e)
SUPPLEMENTAL REPORT Description of Deficiency           -
During a test program conducted by Duke Power Company at Marshaltown Steam Station, Borg-Warner's standard 3",1500-pound motor operating gate valve failed to fully close when actuated under operating conditions. The operating conditions were 2485 lb/in2 at 6500F with a flow rate of 220,000 pounds per hour of steem, which is equivalent to a velocity of approximately 40 feet per seco 4d. Under these conditions, the valve closed to within 10 percent of full closure.
Through a ~ number of subsequent tests, the problem was resolved to be a lack of proper guiding, combined with very high bearing stresses between the gates and the seats which caused binding just before full closure.
Through a ~ number of subsequent tests, the problem was resolved to be a lack of proper guiding, combined with very high bearing stresses between the gates and the seats which caused binding just before full closure.
Similar valves are used at Bellefonte in the Component Cooling Water System, Reactor Coolant System, Makeup and Purification System, and Decay Heat Removal System.
Similar valves are used at Bellefonte in the Component Cooling Water System, Reactor Coolant System, Makeup and Purification System, and Decay Heat Removal System.
Interim Progress TVA and Borg-Warner are developing a program to test the valves at Bellefonte to verify whether or not the Bellefonte valves are sus-ceptible to the deficiency described above.
Interim Progress TVA and Borg-Warner are developing a program to test the valves at Bellefonte to verify whether or not the Bellefonte valves are sus-ceptible to the deficiency described above.
        .
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        =
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                                              .
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Latest revision as of 11:05, 25 December 2024

Part 21 Rept Re Borg Warner 3-inch Motor Operated Gate Valves.Valve Failure to Close Completely Caused by Lack of Proper Guiding & High Bearing Stress Between Gates & Seats. Next Rept to Be Submitted 810213
ML19339C737
Person / Time
Site: Bellefonte  
Issue date: 11/06/1980
From: Mills L
TENNESSEE VALLEY AUTHORITY
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
REF-PT21-80-197-001 10CFR-050.55E, 10CFR-50.55E, BLN-MEB-8005, NUDOCS 8011190281
Download: ML19339C737 (3)
v • d • e


Text

_ -, - - - - - -

PART 21 IIEiTIFICAsiON NO.

% -- m-cot CUPANY (WE.MIA bb4 w

v

. DAT5 0: LETTER. u\\ulto D00(ET NO. D6-%t MM DATE DISTRIBiITED uNbo n m-ORIGIRALREPORT SlPPLBOfTARY7

~

DISTRIBLITION:

REACTOR (R)

X FLEL CYCLE &

SAEGilARDS (S)

IEFILES IEIU (I9 IE FILES IE FIES AD/SG A"/ E I t t 6 in'RCI--

AD/FRSI AD/ROI EGI0iG I,II,III,IV,V EGIONS I,II,III,IV,V EGIGG I,II,III,IV,V VEND 3R BR. R-IV VE}00R BR. R-IV VENDOR BR R-IV LEB / IPA FIB 5715 ffSS / FCFS SS-396

.NRR/D3L AEDD FTB 7602 LDEB / IPA fib 5715 IPES / SG SS-881 NRR/ DOE AE0D FIG 7602 LDEB / IPA f4G 5715

~

NRR/DSI ASLEP FM 450 AEOD

[1B 7602

~~

SAD /SP fig-7210A ASBP E/W 450 NRR/ DOL CEhTPAL FIES 016 CEhTRAL FILES 016 ASLBP FM 450 CBHPAL FILES ( GRON)

CBERAL FIES (GR0:0 CBERAL FIES 016 PDR CENTRALFILES SS-396 CBERAL FILES (GFDD LPDR PDR PDR TERA LPDR

s hj LPDR TEPA

~G

-c OS

.a ACTION:

PRELIMI?MRY EVALUATION OF THE' ATTACHED REPORT. ItOICATES LEAD RESPONSIBILITY FdR FOLLOWJP AS SFDhN BELOW:

IESS OTER

  1. Eth

-r+

8011190 2SI EV h8j

.. ~.

TENf4ESSEE VALLEY AUTHORITY DD D

CH ATTANOOG A. T EtWESGCC.3W.M

  • ED T;D-\\M -001 1

1100 Chestnut Street Tower II 1

November 6, 1980 1r. James Ps. O'Reilly, Director Office of In ection and Enforcement gig

=

U.S. Nuclear R 'ulatory Co:ncission Region II - Suit 3100 g

101 Marietta Stree Atlar:a, Georgia 30

Dear Hr. O'Reilly:

BELLEFOUTE NUCLEAR PLANT UNITS 1 AND 2 - LORG-WARNER 3" MOTOR OPERATED GATE VALVES - NCh'S 0020 AND BLN Mr.B 8005 - SUPPLEFENTAL REPORT On March 17, 1980, R. W. Wright, NRC-0IE Region II, uns inforced that NCR 0020 was determined to be reportable in accordance with 10 CFR 50.55(e). This was followed by our final repcrt dated April 16, 1980.

As a result of now information received subsequent to the final report, related NCR BLU MEB 8005 was determined to be reportable in accordance with 10 CFR 50.55(e). Enclosed is our supplemental report. We consider 10 CFR

- Part (1 to be applicable to this deficiency. We expect to submit our next report by Fcbruary 13, 1981.

If you have any questions concerning this catter, please get in touch with D. L. Lambert at FTS 857-2581.

,Very truly yours, TE!'UESSEE VALLEY AUTHORITY L. M. Mills, Manager Nuclear Regulation and Safety Enclosure cc:

Mr. Victor Stello, Jr., Director (Enclosure)/

Office of Inspection and Enforcement U.S. Nuclear Regulatory Comcission Washington, DC 20555 An Equal Oppertunity Employer 9

ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 BORG-WARNER 3" MOT 0h OPERATED GATE VALVES NCR'S 0020 AND BLN MEB 8005 10 CFR 50.55(e)

SUPPLEMENTAL REPORT Description of Deficiency During a test program conducted by Duke Power Company at Marshaltown Steam Station, Borg-Warner's standard 3",1500-pound motor operating gate valve failed to fully close when actuated under operating conditions. The operating conditions were 2485 lb/in2 at 6500F with a flow rate of 220,000 pounds per hour of steem, which is equivalent to a velocity of approximately 40 feet per seco 4d.

Under these conditions, the valve closed to within 10 percent of full closure.

Through a ~ number of subsequent tests, the problem was resolved to be a lack of proper guiding, combined with very high bearing stresses between the gates and the seats which caused binding just before full closure.

Similar valves are used at Bellefonte in the Component Cooling Water System, Reactor Coolant System, Makeup and Purification System, and Decay Heat Removal System.

Interim Progress TVA and Borg-Warner are developing a program to test the valves at Bellefonte to verify whether or not the Bellefonte valves are sus-ceptible to the deficiency described above.

=

m 4

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