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{{#Wiki_filter:AllAUtu 15 4 WHI Z1 bONI FKdi lE i All Ult i - hdJi $W t/W
{{#Wiki_filter:AllAUtu 15 4 WHI Z1 bONI FKdi lE i All Ult i - hdJi $W t/W s . iiRT 21 IDBEIFICATI i NO.      N- 3 9 7-t00          'CTPAWINE          Y I IRTE OF 111Iti      ,//h'/        D00 U [0. 54 ~ 5 5 5
.
                              '
s . iiRT 21 IDBEIFICATI i NO.      N- 3 9 7-t00          'CTPAWINE          Y I IRTE OF 111Iti      ,//h'/        D00 U [0. 54 ~ 5 5 5
                             //                                  -
                             //                                  -
                                                                   /SlPPifiEEAIIf
                                                                   /SlPPifiEEAIIf B;TE DISTRIBUTED                        ORIGIPAL EKJRT  ___
                                                                                        '
B;TE DISTRIBUTED                        ORIGIPAL EKJRT  ___
                                      "
DISTRIBUTION:
DISTRIBUTION:
                       -/                            -                                  -
                       -/                            -                                  -
EACTOR (R)    /              REl. CYCE &                    SAFEGil4RDS(S)
EACTOR (R)    /              REl. CYCE &                    SAFEGil4RDS(S)
IEFILES                      IEIU (S IE FIES EES - M/s                      IE FIES                        AD/SG
IEFILES                      IEIU (S IE FIES EES - M/s                      IE FIES                        AD/SG AD/FRSI                        AD/ROI EGIONS I,II,III,IV,V        EGIONS I,II.,III,IV,V          EGIONS I,II,III,IV,V
              -
AD/FRSI                        AD/ROI EGIONS I,II,III,IV,V        EGIONS I,II.,III,IV,V          EGIONS I,II,III,IV,V
       \SO3R BR R-IV                \$03R BR. R-IV                  VaiDDR BR. R IV LTE / IPA FIG 5715          ffSS / FCFS    SS-395          gag /93L MOD          F              LEB / FPA    I,IS 5715        ftES / SG SS-881 m m ,zn ctk/D'Een%no_IG N?    O                      AEOD    7602 Otcoh:muFIG    mnB76027zn LO:B / FFA    FIG 5715 IER/DSI                      ASLBP E/W    450              AEOD          FIG 7602 ta W T                      -
       \SO3R BR R-IV                \$03R BR. R-IV                  VaiDDR BR. R IV LTE / IPA FIG 5715          ffSS / FCFS    SS-395          gag /93L MOD          F              LEB / FPA    I,IS 5715        ftES / SG SS-881 m m ,zn ctk/D'Een%no_IG N?    O                      AEOD    7602 Otcoh:muFIG    mnB76027zn LO:B / FFA    FIG 5715 IER/DSI                      ASLBP E/W    450              AEOD          FIG 7602 ta W T                      -
3gof3p p;g_7210A Clfodunk mnB Mn ASBP        E/W 450 -
3gof3p p;g_7210A Clfodunk mnB Mn ASBP        E/W 450 -
NRP/D3L            -
NRP/D3L            -
CENTP L FIES      016        CB4TPAL FIES        016 ASBP      ME                  CBiTPAL FIES ( GRD:0          CBRPAL FIES      (GR0t0 CSEPAL FIES        016          PDR                          CSEPAL FIES        SS-395 CB6RAL FIES      (GPGD        LPDR                          PDR
CENTP L FIES      016        CB4TPAL FIES        016 ASBP      ME                  CBiTPAL FIES ( GRD:0          CBRPAL FIES      (GR0t0 CSEPAL FIES        016          PDR                          CSEPAL FIES        SS-395 CB6RAL FIES      (GPGD        LPDR                          PDR PDR                              t, f          %            IPDR LPDR f              TEPA Y                                  v.      3198;g        .
                                '
PDR                              t, f          %            IPDR LPDR
                                      '
f              TEPA Y                                  v.      3198;g        .
                                                 '"D'[
                                                 '"D'[
                                '
                                                                              '
ACTION:                                                                        -
ACTION:                                                                        -
PRS IMINARY EVALUATION OF THE~ATTAC.
PRS IMINARY EVALUATION OF THE~ATTAC.
                                                      .
IblCATESLEADRESPONSIBILITYF FOLLON1P AS S mhN BELOW:
IblCATESLEADRESPONSIBILITYF FOLLON1P AS S mhN BELOW:
1 t_                                  NRR[                        IESS [            GEER EES 8104l$0 hll 3                                    .                                  -
1 t_                                  NRR[                        IESS [            GEER EES 8104l$0 hll 3                                    .                                  -
Fa', 8g5:.
Fa', 8g5:.


*
          ,
TENNESSEE VALLEY AUTHOR!TY                                r 3@[ddd
TENNESSEE VALLEY AUTHOR!TY                                r 3@[ddd
   .      .                        CH ATVANOOGA. TERNESGCE 37401 400 Chestnut Street Tower II                                    "
   .      .                        CH ATVANOOGA. TERNESGCE 37401 400 Chestnut Street Tower II                                    "
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                   \
                   \
Mr. James P. O'Reilly, Director                                                            -
Mr. James P. O'Reilly, Director                                                            -
                                                                                                    -
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission                                                          ;
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission                                                          ;
Region II - Suite 3100 101 Marietta Stre$t Atlanta, Georgia q03
Region II - Suite 3100 101 Marietta Stre$t Atlanta, Georgia q03
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M. Thomas on October 8,1980, in accordance with 1 This was5,1981.
M. Thomas on October 8,1980, in accordance with 1 This was5,1981.
February      followed by our interim reports dated November1980,    ,
February      followed by our interim reports dated November1980,    ,
                                                                            .
6 and applicable to this deficiency. Enclosed is our final              mport.10 CFR 21 We consider D. L. Lambert at FTSIf          you have cny questions concerning this matter, please 857-2581.                                          ouch with Very truly yours, TENNESSEE VALLEY AUTHORITY L. M. Mills, Manager                          :
6 and
                                                                                .
applicable to this deficiency. Enclosed is our final              mport.10 CFR 21 We consider D. L. Lambert at FTSIf          you have cny questions concerning this matter, please 857-2581.                                          ouch with Very truly yours, TENNESSEE VALLEY AUTHORITY L. M. Mills, Manager                          :
Enclosure Nuclear Regulation and Safety oc:
Enclosure Nuclear Regulation and Safety oc:
Mr. Victor Stello, Jr., Director (Enclosure)                                            i Office of Inspection and Enforcement U.S. Nuclear Regulatory Cocaission                                                    ;
Mr. Victor Stello, Jr., Director (Enclosure)                                            i Office of Inspection and Enforcement U.S. Nuclear Regulatory Cocaission                                                    ;
Washington, DC  20555                                                                -
Washington, DC  20555                                                                -
_
_
                                                                                                  *:
                                                                                                   .I i
                                                                                                   .I i
r
r An Equal Opporturuty Employer
                                                                                                  -
An Equal Opporturuty Employer
                                                                                                 }:
                                                                                                 }:
:j
:j


                                                                            .
                                                                                    *
      .
. .
     .A 45 ENCLOSURE YELLOW CREEK NUCLEA'R PLANT UNIT l' DEFICIENT WELDS ON GAS STRIPPER MODULE NCR YC-100 10 CFR 50.55(e)
     .A 45 ENCLOSURE YELLOW CREEK NUCLEA'R PLANT UNIT l' DEFICIENT WELDS ON GAS STRIPPER MODULE NCR YC-100 10 CFR 50.55(e)
FINAL REPORT Description of Deficiency During installation of the gas stripper pump module (GSPM) at Yellow Creek Nuclear Plant, a TVA welding inspector noticed several weld ,
FINAL REPORT Description of Deficiency During installation of the gas stripper pump module (GSPM) at Yellow Creek Nuclear Plant, a TVA welding inspector noticed several weld ,
Line 102: Line 72:
All of the re' moved piping is to be returned to Norwalk for repairs.
All of the re' moved piping is to be returned to Norwalk for repairs.
This work will be completed by May 15, 1981.
This work will be completed by May 15, 1981.
        .
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Revision as of 23:47, 30 January 2020

Final Part 21 Rept Initially Reported 801008 Re Deficient Welds on Gas Stripper Pump Module.Norwalk Fabricators Will Supervise Removal of Deficient Piping.Work to Be Completed by 810515
ML19350C916
Person / Time
Site: Yellow Creek 
Issue date: 03/31/1981
From: Mills L
TENNESSEE VALLEY AUTHORITY
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
REF-PT21-81-397-000 10CFR-050.55E, 10CFR-50.55E, NCR-YC-100, PT21-81-397, PT21-81-397-000, NUDOCS 8104100211
Download: ML19350C916 (3)
v • d • e


Text

AllAUtu 15 4 WHI Z1 bONI FKdi lE i All Ult i - hdJi $W t/W s . iiRT 21 IDBEIFICATI i NO. N- 3 9 7-t00 'CTPAWINE Y I IRTE OF 111Iti ,//h'/ D00 U [0. 54 ~ 5 5 5

// -

/SlPPifiEEAIIf B;TE DISTRIBUTED ORIGIPAL EKJRT ___

DISTRIBUTION:

-/ - -

EACTOR (R) / REl. CYCE & SAFEGil4RDS(S)

IEFILES IEIU (S IE FIES EES - M/s IE FIES AD/SG AD/FRSI AD/ROI EGIONS I,II,III,IV,V EGIONS I,II.,III,IV,V EGIONS I,II,III,IV,V

\SO3R BR R-IV \$03R BR. R-IV VaiDDR BR. R IV LTE / IPA FIG 5715 ffSS / FCFS SS-395 gag /93L MOD F LEB / FPA I,IS 5715 ftES / SG SS-881 m m ,zn ctk/D'Een%no_IG N? O AEOD 7602 Otcoh:muFIG mnB76027zn LO:B / FFA FIG 5715 IER/DSI ASLBP E/W 450 AEOD FIG 7602 ta W T -

3gof3p p;g_7210A Clfodunk mnB Mn ASBP E/W 450 -

NRP/D3L -

CENTP L FIES 016 CB4TPAL FIES 016 ASBP ME CBiTPAL FIES ( GRD:0 CBRPAL FIES (GR0t0 CSEPAL FIES 016 PDR CSEPAL FIES SS-395 CB6RAL FIES (GPGD LPDR PDR PDR t, f  % IPDR LPDR f TEPA Y v. 3198;g .

'"D'[

ACTION: -

PRS IMINARY EVALUATION OF THE~ATTAC.

IblCATESLEADRESPONSIBILITYF FOLLON1P AS S mhN BELOW:

1 t_ NRR[ IESS [ GEER EES 8104l$0 hll 3 . -

Fa', 8g5:.

TENNESSEE VALLEY AUTHOR!TY r 3@[ddd

. . CH ATVANOOGA. TERNESGCE 37401 400 Chestnut Street Tower II "

March 31, 1981

\ -

\ ,

\

Mr. James P. O'Reilly, Director -

Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission  ;

Region II - Suite 3100 101 Marietta Stre$t Atlanta, Georgia q03

Dear Mr. O'Reilly:

YELLOW CREEE NUCLEAR PLANT UNIT 1 - DEFICIEh

- NCR YC-100 - FINAL REPORT ~

M. Thomas on October 8,1980, in accordance with 1 This was5,1981.

February followed by our interim reports dated November1980, ,

6 and applicable to this deficiency. Enclosed is our final mport.10 CFR 21 We consider D. L. Lambert at FTSIf you have cny questions concerning this matter, please 857-2581. ouch with Very truly yours, TENNESSEE VALLEY AUTHORITY L. M. Mills, Manager  :

Enclosure Nuclear Regulation and Safety oc:

Mr. Victor Stello, Jr., Director (Enclosure) i Office of Inspection and Enforcement U.S. Nuclear Regulatory Cocaission  ;

Washington, DC 20555 -

.I i

r An Equal Opporturuty Employer

}:

j

.A 45 ENCLOSURE YELLOW CREEK NUCLEA'R PLANT UNIT l' DEFICIENT WELDS ON GAS STRIPPER MODULE NCR YC-100 10 CFR 50.55(e)

FINAL REPORT Description of Deficiency During installation of the gas stripper pump module (GSPM) at Yellow Creek Nuclear Plant, a TVA welding inspector noticed several weld ,

deficiencies. For example, fillet welds were found to be undersized .

with some visible porosity.- There also appeared to be a lack of . ~

penetration on butt welds. Arc strikes were visible. The GSPM is '

manufactured by Norwalk Fabricators. It was purchased by TVA from Combustion Engineering.

Safety Implications The failure of the gas stripper pump module c'ould. result 'in release of radioactive gaseous fission products (most notably the noble gases) through the ventilation system. This condition could adversely affect the .

safety of plant operations.

Corrective Action On March 17, 1981, representatives of Norwalk Fabricators, Combustion Engineering, and TVA met in Windsor, Connecticut, to finalize an approach to making repairs. It was decided that Norwalk Fabricat' ors would supervise the removal of all piping that was joined together by.

welds which did not meet the requirements of the applicable ASME Code.

All of the re' moved piping is to be returned to Norwalk for repairs.

This work will be completed by May 15, 1981.

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