View source for 05000271/LER-1981-030, Updated LER 81-030/03L-1:cracks Found on Internal Surface of Valve Bodies & Seating Surfaces of Reactor Water Cleanup Valves Attributed to Surface Shrinking of Casting & Intergranular Stress Corrosion Cracking,Respectively

{{Adams
| number = ML20054L852
| issue date = 07/01/1982
| title = Updated LER 81-030/03L-1:cracks Found on Internal Surface of Valve Bodies & Seating Surfaces of Reactor Water Cleanup Valves Attributed to Surface Shrinking of Casting & Intergranular Stress Corrosion Cracking,Respectively
| author name = Murphy W
| author affiliation = VERMONT YANKEE NUCLEAR POWER CORP.
| addressee name = 
| addressee affiliation = NRC OFFICE OF INSPECTION &amp; ENFORCEMENT (IE REGION I)
| docket = 05000271
| license number = 
| contact person = 
| document report number = LER-81-030-03L, LER-81-30-3L, NUDOCS 8207090008
| package number = ML20054L851
| document type = LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT
| page count = 1
}}
{{LER
| Title = Updated LER 81-030/03L-1:cracks Found on Internal Surface of Valve Bodies & Seating Surfaces of Reactor Water Cleanup Valves Attributed to Surface Shrinking of Casting & Intergranular Stress Corrosion Cracking,Respectively
| Plant = 
| Reporting criterion = 
| Power level = 
| Mode = 
| Docket = 05000271
| LER year = 2081
| LER number = 30
| LER revision = 
| Event date = 
| Report date = 
| ENS = 
| abstract = 
}}

=text=
{{#Wiki_filter:Y U. S. NUCLEAR REGULATORY COMMISSION UPDATE REPORT (Previous Report - 12/4/81)
NRC  ,,   (ORM %6                                                                                                                     LER 81-30/3h Rev. 1 LICENSEE EVENT REPORT
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F                     LICENSEE CODE CON'T lOlil              "*" "y l L@l015 l010 l0 l 2 l 711 68@l 691 i l 10 l 4 l 811 @l017 REPORT 3                                                                                                       74       75 l0 l 118 DATE l 280l@
7         8                  60           61                DOCK ET NUMBER                           EVENT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h I o I 2 I I During replacement of RWCU piping, an inspection of valves V12-29A and B revealed                                                                           1
  ,oi3, l cracks on the internal surface of the valve bodies.                                                        Both cracks were located                             l
  ;o ;4; l approximately 2" from the seating surface. Other cracks were found in the seating                                                                              I i
l o I s l I surfaces of RWCU valves V12-19A/B & 73A/B. There were no valve failures and there j o le l l were no adverse consequences to the public health and safety. There have been no                                                                              l l 0 l 7 l l previous similar occurrences.                                                                                                                               I I
l uis i I SYSTEV                CAUSE          CAUSE                                                  COMP.           VALVE CODE                  CODE       SURCODE                  COMPONENT CODE                SUBCODE           SU8 CODE lO191 7        8                    9 i Cl cl@ U@ LzJ@ l v i Al ti vi el xl@ is_J@ b_l @
to             11             12             13                         18          19               20 SEQUENTI AL                    OCCUR R E NCE         REPORT                    REVISION
                                 ,EVENTYEAR                                  R EPORT NO.                        CODE                TYPE                       NO.
LER RO
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42                43            44             47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS l i l o l l Valves V12-29A and 73A were sent to Battelle Labs to deternine the c rnckin c mochnni emi.
    ;i ;, ; l Cracks found in the seating area of the valves were caused by IGSCC. Cracks found                                                                             l
    ,,,,,       lIn the valve body were attributed to surface shrinkage of the casting. No further                                                                          l i ,   ,3,    l corrective action is required.                                                                                                                           ]
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LOSS OF OR D AMAGE TO FACILITY TYPE      DESCRIPTION NA                                                                            l 1 Til8 l9 z l@l 7                       to 80 ISSUE       DESCRIPTION NA                                                   lllllllllllllf I:lolLZ_f81 7       8 9            10 l
68 69                          80 5 8207090008 820701                                               Murphy                                   PHONE.~ (802) 257-7711                             E PDR ADOCK 05000271 S                                    PDR
}}

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