View source for 05000338/LER-1982-017, Updated LER 82-017/03X-1:on 820408,during Full Power, Charcoal Sample Lab Analysis from Process Vent Filter Failed to Meet Testing Criteria.Caused by Natural Depletion of Charcoal.Redundant Filter Installed & Charcoal Replaced

{{Adams
| number = ML20053C328
| issue date = 05/19/1982
| title = Updated LER 82-017/03X-1:on 820408,during Full Power, Charcoal Sample Lab Analysis from Process Vent Filter Failed to Meet Testing Criteria.Caused by Natural Depletion of Charcoal.Redundant Filter Installed & Charcoal Replaced
| author name = Cartwright W
| author affiliation = VIRGINIA POWER (VIRGINIA ELECTRIC &amp; POWER CO.)
| addressee name = 
| addressee affiliation = NRC OFFICE OF INSPECTION &amp; ENFORCEMENT (IE REGION II)
| docket = 05000338
| license number = 
| contact person = 
| document report number = LER-82-017-03X, LER-82-17-3X, NUDOCS 8206010671
| package number = ML20053C325
| document type = LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT
| page count = 2
}}
{{LER
| Title = Updated LER 82-017/03X-1:on 820408,during Full Power, Charcoal Sample Lab Analysis from Process Vent Filter Failed to Meet Testing Criteria.Caused by Natural Depletion of Charcoal.Redundant Filter Installed & Charcoal Replaced
| Plant = 
| Reporting criterion = 
| Power level = 
| Mode = 
| Docket = 05000338
| LER year = 2082
| LER number = 17
| LER revision = 
| Event date = 
| Report date = 
| ENS = 
| abstract = 
}}

=text=
{{#Wiki_filter:_ _ _ _ _ _                   - _ - _ _ - -
dPDhTE' REPORT - PREVIOUS REPORT DATE:                    5-03-82                U.S. NUCLEAR REGULATORY COMMISSION d                                                                   LICENSEE EVENT REPORT CONTROL BLOCK / / / / / / / (1) (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)
            /0/1/           /V/A/N/A/S/1/ (2)                    /0/0/-/0/0/0/0/0/-/0/0/ (3)             /4/1/1/1/1/ (4)        / /    / (5)
LICENSEE CODE                              LICENSE NUMBER                    LICENSE TYPE            CAT 0/1/
LL/ (6)     /0/5/0/0/0/3/3/8/ (7)        /0/4/0/8/8/2/       (8) / 0/ 5/1/ 9/8/ 2/ (9)
DOCKET NUMBER               EVENT DATE                  REPORT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES (10)
            /0/2/      /_On April 8, 1982, with Unit No. I at 100% power, a charcoal sample laboratory                                 /
            /0/3/      / analysis from the process veat filter did not meet the testing criteria of reg-                               /
l
            /0/4/      / ulatory guide 1.52, Rev. 2.                  The effluent from the process vent filter is con-                /     j
            /0/5/      / tinuously monitored and did not exceed any release limits; therefore, the health /                                  l
            /0/6/      / and safety of the general public were not affected. This is reportable pursuant /
            /0/7/      / to T.S. 3.6.4.3 and 6.9.1.9.b.                                                                                /
            /0/8/      /
                                                                                                                                       /
SYSTEM                 CAUSE        CAUSE                             COMP.            VALVE CODE                   CODE        SUBCODE     COMPONENT CODE         SUBCODE          SUBCODE
            /0/9/          /M/B/ (11) /E/ (12) /F/ (13) /X/X/X/X/X/X/ (14) /Z/ (15)                                /Z/ (16)
SEQUENTIAL           OCCURRENCE         REPORT           REVISION LER/R0             EVENT YEAR        REPORT NO.              CODE            TYPE                NO.
(17) REPORT NUMBER              /8/2/       /-/ /0/1/7/        /\/         /0/3/          /X/       /-/      L1/
ACTION          FUTURE             EFFECT      SHUTDOWN                ATTACHMENT NPRD-4          PRIME COMP. COMPONENT TAKEN          ACTION              ON PLANT METHOD         HOURS       SUBMITTED FORM SUB. SUPPLIER MANUFACTURER LC/ (18) LZ/ (19) LZ/ (20) /Z/ (21) /0/0/0/0/ (22) /Y/ (23) /N/ (24) /A/ (25) /x/9/9/9/ (261 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS (27)
            /1/0/      / The charcoal contained in the process vent filter system may be subjected to                                  /
            /1/1/      / welding and painting fumes during refueling / maintenance outages which tend to                               /
            /1/2/      / shorten the lifetime of the carbon absorber. The charcoal was just naturally                                  /
            /1/3/      / depleted. The redundant filter was placed in service and the charcoal was                                     /
            /1/4/      / replaced in the depleted filter.
                                                                                                                                       /
FACILITY                                                        METHOD OF STATUS                   % POWER          OTHER STATUS                              MSCOERY DESCRMION (32)
           /1/5/       LE/ (28)               /1/0/0/ (29) /         NA       / (30)DISCOERY
                                                                                       /_B/ (31)     / Periodic Surveillance Test /
ACTIVITY                  CONTENT RELEASED                OF RELEASE     AMOUNT OF ACTIVITY (35)                 LOCATION OF RELEASE (36)
          /1/6/           LZ/ (33)             LZ/ (34) /             NA               /    /           NA                             /
PERSONNEL EXPOSURES NUMBER                   TYPE         DESCRIPTION (39)
          /1/7/ /0/0/0/ (37) /Z/ (38) /                           NA                                                                   /
PERSONNEL INJURIES NUMBER                    DESCRIPTION (41)
          /1/8/ /0/0/0/ (40) /                             NA
                                                                                                                                       /
LOSS OF OR DAMAGE TO FACILITY TYPE                   DESCRIPTION                      *"
         /1/9/        /Z/ (42) /
PUBLICITY NA                   R 2 0 6 01OG 7/                                            /
ISSUED                  DESCRIPTION (45)                                               NRC USE ONLY
         /2/0/        /N/ (44) /_                     NA
                                                                                                         /////////////
NAM?. OF PREPARER        W. R. CARTWRIGHT              PHONE     (703) 894-5151

e , e se' UPDATE REPORT - Previous Report Date: 5-03-82 Virginia Electric and Power Company North Anna Power Station, Unit No. 1           

==Attachment:==
Page 1 of 1 Docket No. 50-338 Report No. LER 82-017/03X-1 Description of Event On April 8, 1982, with Unit No. I at 100% power, test results were received indicating that the "B" process vent charcoal filter had a methyl iodide penetration in excess of the acceptable limit. The labora-tory analysis indicated a penetration of 6.5% when tested in accordance with regulatory guide 1.52, Rev. 2 and ANSI N510-1976. The maximcm allowable penetration is 5%.
Probable Consequences of Occurrence The redundant charcoal filter was available for use. The effluent of the process vent system is monitored continuously and since the gaseous release limits were not exceeded, the health and safety of the general public were not affected.
Cause of Event The carbon absorber in the process vent filter system is analyzed every 720 hours of filter operation. The process vent system handles gases from many systems; llowever a majority of the through put is dilu-tion air which is drawn from the third floor of the Auxiliary Building.
Welding and painting during the Unit No. 2 Refueling Outage in the Auxiliary Building may have allowed welding and painting fumes to com-municate with the process vent filter. The filter reached the end of its natural lifetime and the carbon sample had a penetration slightly higher than the allowable maximum penetration.
Immediate Corrective Action The inoperable filter was removed from service and the redundant filter was lined up for use. The carbon was replaced in the depleted filter bank and the absorber was tested satisfactorily in accordance with the required surveillance. The replenished filter was then left as the " Standby" filter.
Scheduled Corrective Action No further corrective action is required.
Actions Taken to Prevent Recurrence The existing requirement to sample and anaylze the carbon every 720 hours of filter operation is adequate to prevent severe degradation of the absorber according to present testing history.
{              Generic Implications l-l l                    There are no generic implications.
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