ML20009H227
| ML20009H227 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 07/17/1981 |
| From: | Alexanderson E, Griffing E, Harrison W DETROIT EDISON CO. |
| To: | |
| Shared Package | |
| ML20009H226 | List: |
| References | |
| EF-127, NUDOCS 8108070058 | |
| Download: ML20009H227 (9) | |
Text
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' HIE DETROIT EDISON CmPANY Enrico Fermi Unit I Deccmmissioned Atomic Power Plant Docket No. 50-16 License No. DPR-9 Report for j
year beginning July 1, 1980 and ending June 30, 1981
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EF-127 Prepared by:
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William G. Harrisorf Custodial Delegate 7!/Io!?/
Approved by:
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Edward P. Griffing Custodian Approved by:
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Eldon L. M exanderson
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Chairman, Review Ccumittee 8108070058 810714' PDR ADOCK 05000016 R
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TABLE OF COtiID7TS Page I.
PREFICE.................................................. 1 II.
RETIREMENT STA'IUS................................. ;,..... 1 Primary System...........................................
1 Primary Sodium Storage....................................
1 Administrative and Surveillance Procedures...............
2 III. HFALTH PHYSICC...........................................
2 Personnel Exposure.......................................
2 Environmental Surveys....................................
3 IV.
PERIODIC TEST ACTIVITIES................................. 3 Weekly Tests and Inspections.............................
3 Monthly Inspections......................................
3 Quarterly Tests..........................................
4 Semi-Annual Tes ts........................................, 4 Annual Tes ts.............................................
6 V.
REVIEW COMI'ITEE........................................
6 Members of Review Comtittee............................
6 Audit Sphi ttee.................. ;...................
6 VI.
NCf1BOR'IliY ITEMS.........................................
7 I
Health Physics Building..................................
7 Iower Reactor Building...................................
7 (LRB) Water Intrusion Alarm..............................
7 Fuel and Repair Building (FARB)...........................
7 Ho t Sump Pump............................................
7 Fire Fighting Equipuent................................... 7 Site Improvements........................................
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PREFACE 4
This annual rep 3rt is issued by The Detroit Edison C&.pany in cm-pliance with the provisions of the United States Nuclear Regulatory 1
Comission, Provisional Operating License No. DPR-9, as amended, and is intended to provide a sumary of the status and events at the decem-missioned Enrico Fermi Atanic Power Plant during the past twelve nonths.
II RETIRDIENT STATUS Primary System i
The primary systs, established during decemnissioning, and consisting l
of the reactor vessel, primary codium piping, primary shield tank, machinery done, primary sodium service system and secondary sodium system extending out to welded pipe caps renains blanketed with carbon dioxide. This was done to provide a passivating atnosphere for any sodium that rarains. A continuous supply of carbon dioxide maintains i
this cover gas at approximately 2 inches of water coltwn pressure.
Primary Sodium Storage There has been no change in sodium inventory from the previous annual report (EF-126), dated June 30, 1980. Periodic inspections for evi-dence of sodium leakage were performed in accordance with Technical Specifications and described in Section IV of this report.
1 Administrative and Surveillance Procedures Revision II to the Administrative and Surveillance Procedures Manual I
was prepared during the year for approval at the 1981 Annual Review Comittee meeting.
Need for this revision was brought abxt by the dismantling of the Health Physics Building in the Fall of 1980, which necessitated changing the location of the Personnel Radiation bbnitoring Station frcrn the Health Physics Building to the inside S.W. corner of the Fuel and Repair Building.
Section VI of the Administrative and Surveillance Procedures dealing with radiological water, sediment and smear survey analysis was changed to reflect the current established procedures allowing the Enrico Fermi II Radchem section to perform all analyses testing for the decomissioned facility.
{
Section VII of the Administrative and Surveillance Procedures was re-4 vised reflecting the appointment of E. P. Griffing to the position of l
Enrico Fermi II Plant Superintendent and custodian of deccmnissioned Fermi I facility replacing W. W. White, i
III HEAL'ni PHYSICS Personnel Exposure There are twenty (20) thernoluminescent dosimeters processed nonthly.
Records indicate two (2) exposures greater than 10 mRDI. The exposures were 20 and 42 mRDI.
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Environmental Surveys A total of twenty (20) environmental sanple analyses of raw surface water, raw city water and sediment were reported during this period.
Sample analyses covered the perird from June, 19o0 through June, 1981.
The results of these sanples were within the nonnal range experiNeed in the past. These values are given in the Periodic Test Activu.ies,Section IV.
IV Periodic Test Activities Weekly Tests and Inspections 1.
Water Intrusion Alarm - Continuity tests of the water intrusion alarm circuits for FARB, lower Reactor Building and biological shield wall areas, were conducted as required by Technical Speci-fication. One repair was made following a malfunction detected by a weekly test.
2.
Sodium - Storage tanks and drums of frozen sodium stored in the Reactor Building were inspected for evidence of leakage.
Weekly inspections revealed no leakage or discrepancies.
Monthly Inspections 1.
Controlled Area Inspections - Visual inspection of fence, gates, doors (locked), operation of sunp pump and liquid level of FE-15 in the FARB were conducted within specified intervals. No diccrep-ancies were found during this reporting period. -
Quarterly Tests 1.
Snear Surveys
'Ihe Reactor Building and FARB were checked for precence of ganna radiation and transferable contamination. The results of tnese smear surveys indicated no decontanination pro-cedures were required.
9 Typical Smear Test Values in DPM/ft' Reactor Building i
f Date High Iow Avg.
7/24/80 99
<3.6 15 10/28/S0 500
<10 110 1/07/81 550
<10 160 5/07/81 500
<10 180 t
l Fuel & Repair Building 1
Date High Iow Avg.
7/24/80 8
<3.6
<3.6 10/28/80 350
<10 90 i
1/07/81 500
<10 140 i-5/07/81 550
<10 170 i
Semi-Annual Tests Water Intrusion Alarms - Both of the required sent-annual functional tests of the water intrusion detectors in the FARB, lower Reactor Building and biological shield wall were successfully conducted; one l
on 7/24/80 and the other on 1/4/81.
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Raw Water Gross Beta Activity uCi/ml location 10/28/80*
5/7/81**
-9
-8 Reactor Channel 3.1 1.3 X 10
<4.0 X 10
~9
-8 Swan Creek 3.2 1.5 X 10
<4.0 X 10
-9
-8 Detroit City Water 2.6 1.2 X 10
<4.0 X 10
-9
-0 Monroe City Water 4.0 1.4 X 10
<4.0 X 10
-9
-8 Lake Erie 4.1 1.3 X 10
<4.0 X 10
-9
-8 South Lagoon 2.8 : 1.3 X 10
<4.0 X 10 Sediment Samples Gamra Activity uCi/ dry gram l37 226 40 10/28/80*
Cs Ra g
-0
-6
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Reactor Channel
<6 X 10 6.4 X 10 6.8 X 10
~7
-6
-5 Swan Creek 4.2 X 10 1.6 X 10 1.6 X 10
-6
-5
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South Lagoon 3.1 X 10 1.8 X 10 1.6 X 10 l37 226 40 5/7/81 **
Cs Ra g
-8
-6 Reactor Channel 1.9 X 10 2.2 X 10~
4.9 X 10 (outfall)
-7
-6
-5 Swan Creek 3.7 X 10 1.1 X 10 2.2 X 10 South Lagoon 6.6 X 10 '
6.9 X 10 4.2 X 10-6
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The above results are similar to past results indicating no influence from the plant.
Carton Dioxide Cover Gas Pressure The semi-annual test of the Hi and Io Pressure alarm settings were successfully ccr:pleted on 7/11/80 and 1/19/81. Setpoints were within the limits established and no adjustments were required.
- NUS Corp. Analysis
- Detroit Edison Ccrupany Analysis 3
Annual Tests Carbon Dioxide Cover Gas Pressure Relief Valve The annual test of the carton dioxide cover gas pressure relief valve setting was successfully capleted on 6/19/81. The relief actuation pressure less than 5 PSIG was verified.
i V
Review Cmmittee Members of the Review Cmmittee E. L. Alexanderson - Chairman E. P. Griffing - Custodian G. W. Bethke W. G. Harrison P. J. Lavely J. E. Meyers s
M. A. Nelson E. H. Newton E. M. Page R. G. Rateick i
The Cmmittee met on July 29, 1980. Formal minutes of these meetings are on file.
Audit Subcamittee Present members of the Audit Subcanittee are: Pr. E. M. Page a:xi Mr. R. G. Rateick. The Subcmmittee met at the facility on December 18, 1980, January 2, 1981, June 11, 1981 and July 2, 1981 for inspection I
of the facility and review of records and prceedures. Macrandums con-taining their findine ve on file. The Review Cmmittee will discuss the findings of the Audit Subcamittee in their regular annual meeting I
required to be convened between June 30, 1980 and August 31, 1981.
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r VI Notewrthy Iterns Health Physics Building The Health Physics Building was dismantled in October 1980.
All associated liqaid The Building Foundation slab was left intact.
radioactive waste drain lines were pennnently plugged and marked.
(Detailed prints are on file).
Iower Reactor Building (LRB) Water Intnision Alarm The LRB Water Intrusion Alarm failed in the test node July 6,1980.
The affected area was checked and found dry. Instrument Departnent personnel made a sensitivity adjustnent and rechecked for proper operation.
Fuel and Repair Building (FARB) Hot Su::p Pump In February 1981 surfacewater entered the west below grade wall of the FARB around a pipe penetration sleeve and hence, to the lower level floor drains.
The renaining hot su::p pump also failed at this time. A portable electric subnersible pump was installed to maintain the hot sump level.
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As a result of the water intrusion the M-15 holding tank level increased frcan 46 to 60 inches. Repairs were made to the pen *aration sleeve.
The M-15 tank level has not changed since.
I Fire Fighting Equi p t and seven ansul metal-x fire entinguishers in the protected Six CO2 area were tested and refilled.
Site Inprovement The embanienent outside the west end of the Fuel aM Repair Building was shored up and covered with four inch thick rip rap to prevent l
future erosion.
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