View source for DCL-86-355, Special Rept 86-03:on 861202,plant Vent high-range Monitor Failed in high-range.Replacement Detector Ordered & Scheduled to Arrive on 870108

{{Adams
| number = ML20215G026
| issue date = 12/15/1986
| title = Special Rept 86-03:on 861202,plant Vent high-range Monitor Failed in high-range.Replacement Detector Ordered & Scheduled to Arrive on 870108
| author name = Shiffer J
| author affiliation = PACIFIC GAS &amp; ELECTRIC CO.
| addressee name = Martin J
| addressee affiliation = NRC OFFICE OF INSPECTION &amp; ENFORCEMENT (IE REGION V)
| docket = 05000323
| license number = 
| contact person = 
| document report number = 86-03, DCL-86-355, NUDOCS 8612240205
| document type = REPORTABLE OCCURRENCE REPORT (SEE ALSO AO LER), TEXT-SAFETY REPORT
| page count = 2
}}

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RECEIVED PACIFIC GAS AND E LE C T RIC bbMPANY 1%b bEC lb A          4 bbWb '                    l     77 BEALE STREET . SAN FRANCISCO, CALIFORNIA 94106
* 10: 2 0 372-6587 (415)781 4211 . TM 91 REGION V JAMES D. SHIFFER                                                                                                    F vitt pee 51 DENT f   HUCLEAR POWER GENERAftON December 15, 1986 PGandE Letter No.: DCL-86-355 i
Mr. John B. Martin, Regional Administrator U. S. Nuclear Regulatory Commission, Region V                                                                  '
1450 Maria Lane, Suite 210 Halnut Creek, CA 94596-5368 Re: Docket No. 50-323, OL-DPR-82
 >                     Diablo Canyon Unit 2 Special Report on Inoperability of Plant Vent High Range Radiation Monitor, SR 86-03

==Dear Mr. Martin:==

In accordance with the requirements of the Diablo Canyon Technical Specifications 6.9.2 and 3.3.3.6 Action d., this Special Report is being submitted concerning the Unit 2 plant vent high range radiation monitor (RM-29) being inoperable greater than 7 days.
On December 2, 1986, during the performance of Surveillance Test Procedure (STP) I-18BB2D, " Calibration of RM-29 Plant Vent High Range Monitor," RM-29                                  "
failed in the high range. In accordance with STP G-16 " Alternate Methods of
.         Monitoring for High Range Accident Radiation Monitors," and Technical Specification 3.3.3.6 Action d., alternate methods of monitoring for high-range postaccident radiation were established at the plant vent within 72 hours on December 5, 1986.
i          A replacement detector assembly had been previously ordered and is scheduled to arrive on January 8, 1987. This order is presently being expedited. Upon                                   ,
a          receipt of the new detector, it will be calibrated and RM-29 returned to
* l operable status.
!          Since alternate methods of monitoring were established in accordance with Technical Specification 3.3.3.6, no safety consequences or implications have resulted from this event.
86122                     23
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      ..>k. J. B. Martin PGandE Letter No. DCL-86-355 December 15, 1986 Page 2 Kindly acknowledge receipt of this material on the enclosed copy of this letter and return it in the enclosed addressed envelope.
Sincerely, r
i  ' /,,,              t-s.
cc:   L. J. Chandler M. M. Mendonca B. Norton H. E. Schierling S. A. Varga CPUC Diablo Distribution Document Control Desk 1232S/0048K/RHM/ll28 i
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