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{{#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
{{#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
                                                                  /SlPPifiEEAIIf B;TE DISTRIBUTED                         ORIGIPAL EKJRT ___
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DISTRIBUTION:
D00 U [0. 54 ~ 5 5 5
                      -/                           -                                  -
//
EACTOR (R)     /             REl. CYCE &                   SAFEGil4RDS(S)
B;TE DISTRIBUTED ORIGIPAL EKJRT /SlPPifiEEAIIf DISTRIBUTION:
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                     -
EACTOR (R)
3gof3p p;g_7210A Clfodunk mnB Mn ASBP       E/W 450 -
/
NRP/D3L             -
REl. CYCE &
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       .
SAFEGil4RDS(S)
                                                '"D'[
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
ACTION:                                                                         -
\\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 ctk/D'Een%no_IG 7602 m m,zn Otcoh:muFIG 7602 LO:B / FFA FIG 5715 AEOD N?
O mnB 7zn IER/DSI ASLBP E/W 450 AEOD FIG 7602 Clfodunk mnB Mn ta W T 3gof3p p;g_7210A 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 f
TEPA LPDR Y
3198;g v.
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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:
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TENNESSEE VALLEY AUTHOR!TY                               r 3@[ddd
TENNESSEE VALLEY AUTHOR!TY r 3@[ddd CH ATVANOOGA. TERNESGCE 37401 400 Chestnut Street Tower II March 31, 1981
  .      .                        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$t Atlanta, Georgia q03
                  \
Mr. James P. O'Reilly, Director                                                             -
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission                                                           ;
Region II - Suite 3100 101 Marietta Stre$t Atlanta, Georgia q03


==Dear Mr. O'Reilly:==
==Dear Mr. O'Reilly:==
YELLOW CREEE NUCLEAR PLANT UNIT 1 - DEFICIEh
YELLOW CREEE NUCLEAR PLANT UNIT 1 - DEFICIEh
      - NCR YC-100 - FINAL REPORT                                                     ~
- 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,     ,
M. Thomas on October 8,1980, in accordance with 1 This was followed by our interim reports dated November 6 February 5,1981.
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                           :
1980, and applicable to this deficiency. Enclosed is our final mport.
Enclosure Nuclear Regulation and Safety oc:
We consider 10 CFR 21 D. L. Lambert at FTSIf you have cny questions concerning this matter, please 857-2581.
Mr. Victor Stello, Jr., Director (Enclosure)                                           i Office of Inspection and Enforcement U.S. Nuclear Regulatory Cocaission                                                     ;
ouch with Very truly yours, TENNESSEE VALLEY AUTHORITY L. M. Mills, Manager Nuclear Regulation and Safety Enclosure Mr. Victor Stello, Jr., Director (Enclosure) oc:
Washington, DC   20555                                                                 -
Office of Inspection and Enforcement i
                                                                                                  .I i
U.S. Nuclear Regulatory Cocaission Washington, DC 20555
.I i
r An Equal Opporturuty Employer
r An Equal Opporturuty Employer
                                                                                                }:
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    .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,
deficiencies. For example, fillet welds were found to be undersized       .
deficiencies. For example, fillet welds were found to be undersized with some visible porosity.- There also appeared to be a lack of
with some visible porosity.- There also appeared to be a lack of               . ~
. ~
penetration on butt welds. Arc strikes were visible. The GSPM is             '
penetration on butt welds. Arc strikes were visible. The GSPM is manufactured by Norwalk Fabricators.
manufactured by Norwalk Fabricators.     It was purchased by TVA from Combustion Engineering.
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 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.
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.
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.
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.
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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Latest revision as of 19:39, 23 December 2024

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

//

B;TE DISTRIBUTED ORIGIPAL EKJRT /SlPPifiEEAIIf 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 ctk/D'Een%no_IG 7602 m m,zn Otcoh:muFIG 7602 LO:B / FFA FIG 5715 AEOD N?

O mnB 7zn IER/DSI ASLBP E/W 450 AEOD FIG 7602 Clfodunk mnB Mn ta W T 3gof3p p;g_7210A 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 f

TEPA LPDR Y

3198;g v.

'"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 was followed by our interim reports dated November 6 February 5,1981.

1980, and applicable to this deficiency. Enclosed is our final mport.

We consider 10 CFR 21 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 Nuclear Regulation and Safety Enclosure Mr. Victor Stello, Jr., Director (Enclosure) oc:

Office of Inspection and Enforcement i

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.

e 6

9 9

e e

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