View source for 05000259/LER-1982-018, Updated LER 82-018/03X-1:on 820317,inspector Observed Bolts Missing from Reactor Core Isolation Cooling Turbine Exhuast Rupture Diaphragm Assembly.Outer Rupture Diaphragm Missing. Caused by Failure to Install Outer Rupture Disc

{{Adams
| number = ML20054E534
| issue date = 06/01/1982
| title = Updated LER 82-018/03X-1:on 820317,inspector Observed Bolts Missing from Reactor Core Isolation Cooling Turbine Exhuast Rupture Diaphragm Assembly.Outer Rupture Diaphragm Missing. Caused by Failure to Install Outer Rupture Disc
| author name = Crowell J
| author affiliation = TENNESSEE VALLEY AUTHORITY
| addressee name = 
| addressee affiliation = NRC OFFICE OF INSPECTION &amp; ENFORCEMENT (IE REGION II)
| docket = 05000259
| license number = 
| contact person = 
| document report number = LER-82-018-03X, LER-82-18-3X, NUDOCS 8206110316
| package number = ML20054E530
| document type = LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT
| page count = 2
}}
{{LER
| Title = Updated LER 82-018/03X-1:on 820317,inspector Observed Bolts Missing from Reactor Core Isolation Cooling Turbine Exhuast Rupture Diaphragm Assembly.Outer Rupture Diaphragm Missing. Caused by Failure to Install Outer Rupture Disc
| Plant = 
| Reporting criterion = 
| Power level = 
| Mode = 
| Docket = 05000259
| LER year = 2082
| LER number = 18
| LER revision = 
| Event date = 
| Report date = 
| ENS = 
| abstract = 
}}

=text=
{{#Wiki_filter:'
NRC FORN' 303 U.S. NUCLEAR REGULATORY COMMISSION N                                   UPDATE REPOR
                         *                                         ,                  LICENSEE EVENT REPORT                              PREVIOUS REPORT DATE 4/13/82 CONTROL BLOCK: l i
l       l     l     I     I Ih e
(PLEASE PRINT 071 TYPE ALL REQUIRED INFORMATIONI FJTil8 I9 A ! LLICENSEE 7
lBlR           l F l 1 l@l CODE         le      15 0 l 0 l - l 0 LICENSE    l 0 l 0NVMdEH l 0 l 0 l- l 0 l 0JSl@l264 l1LICENSE   l 1 l 1TYPE  l 1JOl@l SF CAT l
l@
ba CON'T lol11                  3$ny l L @l 01 5 l 0 l 0 l 0 l 2 l 5 l 9 @l 0 l 3 l 1 l 7 l 8 l 2 l@l 0 l 6 l 0l 1l 8 l 2 l@
J         8                       60           68              OOCK ET NUV8ER                     64     63      4 VENT DATE           74      75       REPORT DATE        80 EVENT OESCalPTION AND PROBABLE CONSEQUENCES h
[o_L2J l An NRC resident inspector observed bolts missine from the unit 1 RCIC                                                                                                             l
 ;    lo la l l turbine exhaust rupture diaphragm assembiv. A subsequent inspection by                                                                                                           l
 '    La_l> J l plant ennineers revented that the outer ruoture dianbraem was missina.                                                                                                           I ITITl l RCTC was declared inoperable to install a diaphrnem.                                                                  (T.S. 3.5.F.2)                                               l
   , I o is I l There was no dancer to the henith and safety of *he nublic in that redundant                                                                                                     i      ,
1Ol7l l systems were nyniinble nnd onorable.                                                                                                                                               [
101811                                                                                                                                                                                     l 7        s9                                                                                                                                                                        88 t                                                 DE              CODE           SUBC DE                      COMPONENT CODE                 SUSC DE          S       E 10191 7         8 l C l v l@ [nj@ I z l@ lIJTl ul RI nl Il NI@ L7J@ l z i@
9         10                             12                                             IS 11                                                                          '38               20 SEQUENTI AL                          OCCURRENCE          REPORT                     REVISION LER          EVENT YEAR                                    REPORT NO.                            CODE                TYPE                       NO
                     @ ,agg.RO I al 21                            L_l               10 11 19 I                  l-l          I of 31             1 x1             L .-]     LLJ
_ 21         22           23               24                26        27           N        29          30              38        32 TAKEN AC Of                     O PL NT             MET                           HOURS            SB IT           FO       B.      SUPPLIE            MAN FACTLRER IJJ A l@lc    J4 l@         lzl@ LzJO I ol ol ol ol 35                  J6                  31                     40 Lv_1@
di LNJ 42 O         l43Nl @       [T l1 l4 l747l@
44 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h 11 i O I (_An investiention has been conducted to dotarnine the cause of the outer                                                                                                         l lYIYl l dinnbrnen not beino in nInce.                                                 For enuse nnd corrective action. see                                                            j L' 12J l sunnienenent sheet.
_                                                                                                                                                                                      l uDJ l                                                                                                                                                                                      l 18 14 1l                                                                                                                                                                      '
l J        8 9                                                                                                                                                                       80 STA 5                % POWE R                       OTHER STATUS                        IS V RY                          DISCOVERY DESCRIPTION
; I i I 5 I [,2,,,jh IO I 9 l 0 lhl                                       NA                          l      lDl@l*               Engineering Inspection                                      l A$TIVITY CO TENT RELE ASED OF RELE ASE                        AMOUNT OF ACTIVITY                                                            LOCATION OF RELE ASE l1l6I                    @              @l                   NA                                  l           l          NA                                                              I PERSONNEL EXPOS             ES NUMBE R               TYPE        DESCRIPTION l1l11lOl0l0l@lzl@l NA                                 -
80 I
PERSONNE'L iNau' dies NUMNER                DESCRIP TION @
W d l01O!0lhl
      /        J    9_                13       12 NA 80 l
LOSS OF OH DAVAGE TO FACILITY                  -
TYPE        D E scrip TION lIl ?l'L:' ] @ l                                                                       NA                                                                                              i evatETv                                    8206110316 8206C1                                                                                                  a0 iSSuEo         oESCRiPTiON @ PDR ADOCK 05000259                                                                                                     NRC USE ONLY l 2 I"I LNJQ8)l                                                 S                      s ,
PDR                                         g     g,,,,y,,,              ,,g3
      '       8 3                '                                                                                                                      68 69                           80i NAME OF PREPARER                               John C. Crowell                                          PHONE:          (205) 729-0734                            *

      ~
Tennessee Valley Authority Browns Ferry Nuclear Plant                                             Form BF 17 BF 15.2 2/17/82
                                                                                                             \
          ~                                LER SUPPLEMENTAL INFORMATION                                      ,
I
        ^
BFRO     259 / 8218 R1 Technical Specification' Involved      3.5.F.2 Reported 'Under Technical Specification     6.7.2.b(3)
* Date Due NRC I,
Event Narrative:
          ~
I' An NRC resident inspector observed bolts missing on the unit 1 RCIC turbine exhaust rupture diaphragm assembly. A subsequent inspection' by plant engineers revealed that the outer rupture diaphragm was missing. The RCIC was declared inoperable on March 17, 1982 at 1710 hours to install an outer rupture diaphragm. The diaphragm was installed Jmd the RCIC was declared operable on March 17, 1982 at 1850 hours.
* An investigation of this event revealed that when a modification to replace the inner rupture disc was performed, the outer rupture disc was not in place. The work instruction provided no written work instructions and the drawings included in the work instructions did not reflect the configuration of the inner and outei rupture discs. Normally the rupture discs were changed out as routine maintenance and field services personnel had little experience with the evolution, and due to lack of adequate documentation failed to install an outer rupture disc.
Since this work was performed, much more emphasis has been placed on reviewing workplans for adequate work instructions and references.
Mechanical Maintenance Instruction 22 will be revised to clarify-installation instructions for the RCIC rupture disc and will be revised by August 1, 1982.
i.
(
* Previous Similar Esents:
L
,    ,               NONE 4
c l
L l   F                                                                 '
; ~ [..
Retention:   Period - Lifetime; Responsibility - Document Control Supervisor
* Revision :    ((                        ,
7-L
}}

{{LER-Nav}}