ML19321A969: Difference between revisions

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=Text=
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     ,,.-        ATTAGED IS A PART 21 EPORT FROM IE l' AIL UNIT - ROOM 359 E/W
     ,,.-        ATTAGED IS A PART 21 EPORT FROM IE l' AIL UNIT - ROOM 359 E/W PART21IDENTIFICATIONNO.-        8 o - 2V 6 -o o o COPPANY IWE_ 'd lb IMTE OF ETTFA      7/1/Po            D00(ET NO.      4n-ar7 7//{/fo
      '
PART21IDENTIFICATIONNO.-        8 o - 2V 6 -o o o COPPANY IWE_ 'd lb IMTE OF ETTFA      7/1/Po            D00(ET NO.      4n-ar7 7//{/fo
                       ~
                       ~
DATEDISTRIBUTED                            ORIGIIML EPORT  A    SUPPlHENTARY DISTRIBUTION:
DATEDISTRIBUTED                            ORIGIIML EPORT  A    SUPPlHENTARY DISTRIBUTION:
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IE FILES                      [MTERIALS (M)                IEFILES AD/ROI(2)                      IEFILES                    AD/SG AD/RCI (2)                      AD/FFFSI                    AD/ROI EGIONS I,II,III,IV,V          EGIONS I,II,III,lV,V        EGIONS I,II,III,IV,V VENDOR BR. R-IV                VENDOR BR. R-IV vet 00R BR. R-IV LDEB / IPA FTB 5715            IfES / FCMS      SS-395    NRP/ DOL AEOD          FIB 7602          L0EB / MPA    ff8 5715      IfSS / SG SS-881 NRR/ DOE                        AEOD          FIG 7602      L0EB/ IPA    I4B 5715 NRR/DSI                        CENTRALFILES      016      AEOD        I4B 7602 NRR/ DST                        CENTRAL FILES ( Q RON)
IE FILES                      [MTERIALS (M)                IEFILES AD/ROI(2)                      IEFILES                    AD/SG AD/RCI (2)                      AD/FFFSI                    AD/ROI EGIONS I,II,III,IV,V          EGIONS I,II,III,lV,V        EGIONS I,II,III,IV,V VENDOR BR. R-IV                VENDOR BR. R-IV vet 00R BR. R-IV LDEB / IPA FTB 5715            IfES / FCMS      SS-395    NRP/ DOL AEOD          FIB 7602          L0EB / MPA    ff8 5715      IfSS / SG SS-881 NRR/ DOE                        AEOD          FIG 7602      L0EB/ IPA    I4B 5715 NRR/DSI                        CENTRALFILES      016      AEOD        I4B 7602 NRR/ DST                        CENTRAL FILES ( Q RON)
CENTPAL FILES    016 NRR/ DOL                        PDR CBITRAL FILES (GRON)
CENTPAL FILES    016 NRR/ DOL                        PDR CBITRAL FILES (GRON)
CENTRAL FILES    016          LPDR CENTRALFILES    SS-396
CENTRAL FILES    016          LPDR CENTRALFILES    SS-396 CENTRAL FILES (GROBD            M                          PDR PDR      .
  .
CENTRAL FILES (GROBD            M                          PDR PDR      .
LPDR                            .
LPDR                            .
LPDR TERA TERA ACTION:
LPDR TERA TERA ACTION:
PRELIMINARY EVALUATION OF THE ATTACHED REPORT INDICATES LEAD RESPONSIBILITY FOR FOLLOWUP AS SHOWN BELOW:
PRELIMINARY EVALUATION OF THE ATTACHED REPORT INDICATES LEAD RESPONSIBILITY FOR FOLLOWUP AS SHOWN BELOW:
IE    g                                NRR                        ffES          OTHER    i
IE    g                                NRR                        ffES          OTHER    i l
              .
l
                                                                        '
SG
SG
       - FR4SI REV:7/9/80 soo7240VIT                                                                                          4
       - FR4SI REV:7/9/80 soo7240VIT                                                                                          4


_
                                                     .-                -~
                                                     .-                -~
  ,
       ,        e g.
       ,        e
e
    .
   .f TENNESSEE VALLEY AUTHORITY CH ATTANOOGA TENNESSEE 3740,< R C RF.4. * *
g.
                                                                                                        ,,
* e
   .f TENNESSEE VALLEY AUTHORITY
* CH ATTANOOGA TENNESSEE 3740,< R C RF.4. * *
: g. T L n i4T h . '- ~
: g. T L n i4T h . '- ~
June 30, 1980
June 30, 1980
                                            '
                                                                             - {; j lj 't' P1    30 gd c2V6-oo o Mr. James P.-O'Reilly, Director U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region II 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303
                                                                             - {; j lj 't'
                                                                            ,
P1    30 gd c2V6-oo o Mr. James P.-O'Reilly, Director U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region II 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303


==Dear Mr. O'Reilly:==
==Dear Mr. O'Reilly:==
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The enclosed Part 21 report contains further information about the
The enclosed Part 21 report contains further information about the
                     . problem and associated corrective action.
                     . problem and associated corrective action.
Very truly yours,
Very truly yours, TENNESSEE VALLEY AUTHCRITY
                                                                                                  .
TENNESSEE VALLEY AUTHCRITY
         ~
         ~
                      ,
                                                                -
                                                                    .
N
N
: d. G. Parris Manager of Power Enclosure
: d. G. Parris Manager of Power Enclosure OFFICIAL COPY An Equal Opportunity Employer
                                                                                            .
OFFICIAL COPY An Equal Opportunity Employer


e
e 9
-
  .    *
      .
    .
9
.
Attacirnent 1 o
Attacirnent 1 o
pal:T "1 RECOPJ[
pal:T "1 RECOPJ[
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Date which' Defect or Noncompliance 1:a: Diceovered          6/4/80
Date which' Defect or Noncompliance 1:a: Diceovered          6/4/80
::=ber of Identical Cc=ponents In Une        2
::=ber of Identical Cc=ponents In Une        2
             '. cation of Components    units 2 and 3 FPCI turbines
             '. cation of Components    units 2 and 3 FPCI turbines Ccrrective Act.iot, TcLen rrxiXXXXXX:CCCL Valve body was replaced with a unit properly _ fabricated.
                              -
Ccrrective Act.iot, TcLen rrxiXXXXXX:CCCL Valve body was replaced with a unit properly _ fabricated.
_
Length of Time T:e 1: ired To Cccplcte Action      24 man-hours IIas defect or noncompliance been reported previously? Yes l          l No R If yes, by whr.t means?}}
Length of Time T:e 1: ired To Cccplcte Action      24 man-hours IIas defect or noncompliance been reported previously? Yes l          l No R If yes, by whr.t means?}}

Latest revision as of 03:29, 1 February 2020

Part 21 Rept Re Defective Terry Turbine Co HPCI Turbine. Caused by Machining Error in Fabrication of Mechanical Overspeed Trip Valve Body Assembly Which Resulted in HPCI Remaining in Tripped Condition.Valve Body Replaced
ML19321A969
Person / Time
Site: Browns Ferry Tennessee Valley Authority icon.png
Issue date: 06/30/1980
From: Parris H
TENNESSEE VALLEY AUTHORITY
To:
References
REF-PT21-80-246-000 NUDOCS 8007240455
Download: ML19321A969 (3)
v • d • e


Text

~

,,.- ATTAGED IS A PART 21 EPORT FROM IE l' AIL UNIT - ROOM 359 E/W PART21IDENTIFICATIONNO.- 8 o - 2V 6 -o o o COPPANY IWE_ 'd lb IMTE OF ETTFA 7/1/Po D00(ET NO. 4n-ar7 7//{/fo

~

DATEDISTRIBUTED ORIGIIML EPORT A SUPPlHENTARY DISTRIBUTION:

~

FUEL CYCLE &

EACTOR (R) [ SAFEGlMRDS (S)

IE FILES [MTERIALS (M) IEFILES AD/ROI(2) IEFILES AD/SG AD/RCI (2) AD/FFFSI AD/ROI EGIONS I,II,III,IV,V EGIONS I,II,III,lV,V EGIONS I,II,III,IV,V VENDOR BR. R-IV VENDOR BR. R-IV vet 00R BR. R-IV LDEB / IPA FTB 5715 IfES / FCMS SS-395 NRP/ DOL AEOD FIB 7602 L0EB / MPA ff8 5715 IfSS / SG SS-881 NRR/ DOE AEOD FIG 7602 L0EB/ IPA I4B 5715 NRR/DSI CENTRALFILES 016 AEOD I4B 7602 NRR/ DST CENTRAL FILES ( Q RON)

CENTPAL FILES 016 NRR/ DOL PDR CBITRAL FILES (GRON)

CENTRAL FILES 016 LPDR CENTRALFILES SS-396 CENTRAL FILES (GROBD M PDR PDR .

LPDR .

LPDR TERA TERA ACTION:

PRELIMINARY EVALUATION OF THE ATTACHED REPORT INDICATES LEAD RESPONSIBILITY FOR FOLLOWUP AS SHOWN BELOW:

IE g NRR ffES OTHER i l

SG

- FR4SI REV:7/9/80 soo7240VIT 4

.- -~

, e g.

e

.f TENNESSEE VALLEY AUTHORITY CH ATTANOOGA TENNESSEE 3740,< R C RF.4. * *

g. T L n i4T h . '- ~

June 30, 1980

- {; j lj 't' P1 30 gd c2V6-oo o Mr. James P.-O'Reilly, Director U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region II 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303

Dear Mr. O'Reilly:

PART 21 REPORT FOR MATERIAL DEFECT AT BR0k".;S FERRY NUCLEAR PLANT On June 4,1980, it was discovered that a new replacement part for the high-pressure coolant inj ection - (HPCI) system at Browns Ferry Nuclear Plant. contained a manufacturing defect. Due to a machining error, the i HPCI mechanical overspeed trip valve body would not allow sufficient oil pressure .to develop within the valve body. If undetected, the defect would have caused HPCI to remain in a tripped condition. This defect has been detemined to be reportable under Part 21.

The enclosed Part 21 report contains further information about the

. problem and associated corrective action.

Very truly yours, TENNESSEE VALLEY AUTHCRITY

~

N

d. G. Parris Manager of Power Enclosure OFFICIAL COPY An Equal Opportunity Employer

e 9

Attacirnent 1 o

pal:T "1 RECOPJ[

P3 2nt Browns Ferry Nuclear Plant Cc=ponent or Gysten. Identification EPCI - turbine Supplier of Component Terry Turbine Company IIature of Defect or iloncompliance A caching error was made fabricating the mechanical overspeed trip valve body assembly.

L: tent of Snfety Hnnard This nachining error would not allow sufficient oil pressure to develop within the valve body, resulting __

in the HPCI remaining in a tripped condition.

Date which' Defect or Noncompliance 1:a: Diceovered 6/4/80

=ber of Identical Cc=ponents In Une 2

'. cation of Components units 2 and 3 FPCI turbines Ccrrective Act.iot, TcLen rrxiXXXXXX:CCCL Valve body was replaced with a unit properly _ fabricated.

Length of Time T:e 1: ired To Cccplcte Action 24 man-hours IIas defect or noncompliance been reported previously? Yes l l No R If yes, by whr.t means?

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