ML19338C696
| ML19338C696 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 07/29/1980 |
| From: | Alexanderson E, William White DETROIT EDISON CO. |
| To: | |
| Shared Package | |
| ML19338C695 | List: |
| References | |
| EF-126, NUDOCS 8008180470 | |
| Download: ML19338C696 (9) | |
Text
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THE DETROIT EDISC'i COMPAh7 Enrico Fermi Unit I Decomissioned
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Docket No. 50-16
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License No. DPR-9 Report for year beginning July 1, 1979 and ending June 30, 1980 EF - 126 Date: "y.Tj-90 Approved by:
William W. White i
Custodian
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Approved by-by,
Date:
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Eldon 1.'Klexanderson
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.W.I Chairman, Review Committee
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0 TABLE OF CONTENTS Page I.
PREFACE......................................
1 II.
RETIREMENT STATUS.................
1 1
Primary System.
Primary Sodium Storage...............
1 Administrative and Surveillance Procedures.
2 III. HEALTH PHYSICS...............................
3 Personnel Exposure................
3 Environmental Surveys..........
3 IV.
PERIODIC TEST ACTIVITIES.
3 Weekly Tests and Inspections....
3 Monthly Inspections............
3 Quarterly Tests.......
4 Semi-Annual Tests..
4 Annual Tests..
6 V.
REVIEW COMMITTEE.....................
6 Members of Review Conmit tee.......
6 Audit Subcommittee...
6 VI.
NOTEWORTHY ITEMS.
7 Reactor Building Painting..........
7 Lower Reactor Building (LRB) Water Intrusion Alarm.
7 Biological Shield Wall (BSW) Area Water Intrusion Alarm...
7 FARB Back-Up Hot Sump Pump.
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PREFACE This annual report is issued by The Detroit Edison Company in com-1 pliance with the provisions of the United States Nuclear Regulatory 1
l Commission, Provisional Operating License No. DPR-9, as amended, and l
is intended to provide a summary of the status and events at the decce-l l
missioned Enrico Fermi Atomic Power Plant during the past twelve months.
1 II RETIREMINT STATUS 1
Primary System The primary system, established during decommissioning, and consisting of the reactor vessel, primary sodium piping, primary shield tank, machinery dome, primary sodium service system and secondary sodium 1
system extending out to welded pipe caps remains blanketed with Carbon i
Dioxide. This was done to provide a passivating atmosphere for any sodium that remains. A continuous supply of carbon dioxide maintains this cover gas at approximately 2 inches of water column pressure.
Primary Sodium Storage There has been no change in sodium inventory from the previous annual report (EF-124), dated June 30, 1978. Periodic inspections for evi-dence of sodium leakage were performed in accordance with Technical Specifications and described in Section IV of this report.
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Administrative and Surveillance Procedures Revision 1 to the Administrative and Surveillance Procedures Manual was prepared during the year for approval at the 1980 Annual Review i
Committee Meeting Need for this revision was brought about by the formation of a new l
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Nuclear Operations Organization, headed by a Vice President, within i
the Detroit Edison Company. Delegation of responsibility for the decommissioned facility was changed from the Manager - Power Systems j
Cperations down through the Production Department to the Vice President Nuclear Operations down through the Manager - Nuclear Operations.
The need to also report abnormal occurences to the State of Michigan l
L Department of Public Health was included in Section 11F Page 2-5 and the requirements for the Plant Review Audit Subece=ittee to meet was changed to twice a year rather than once every six months.
4 Section VI D.6.c (Annual Report) was changed to show the need to identify this report with the docket and license number and to send an additional copy to the NRC Document Management 3 ranch as required in i
the NRC letter " Reports to the Nuclear Regulatory Commission (NRC)"
i
- 21-02335-03 free Ja=es G Keppler dated April 25, 1960.
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For convenience, the address to which the fifty (50) copies of the Annual Report must be sent was also added to this section.
The tables 3
i in Section VII were revised to reflect personnel changes brought about by retirements, transfers and resignations and changed approval authority brought about by the above mentioned organization change.
Telephone numbers on Table IV were checked to ensure they were current and accurate.
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1 III HEALTH PliYSICS t
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Persenne l Exposure twenty (20) thermoluminescent dosimeters processed monthly, There are i
i Records indicate one (1) exposure greater than 10 MREM.
The exposure was 1-MREM.
l Environmental Surveys l
A tatal of twenty (20) environmental sample analyses of raw surface 4
water, raw city water and sediment were reported during this period.
Sample analyses covered the period f rom June, 1979 through June, 1980.
I The results of these samples were within the normal range experienced c
in the past. These values are given in tne Periodic Test Activities,Section IV.
IV i
Periodic Test Activitics Week! Tests and Inspections 1
1.
Water Intrusion Alarm - Continuity tests of the water intrusien
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alarm circuits for FARB, lower Reactor Building and biological snield wall areas, were conducted as required by Technical Speci-l fication. One repair was made following a malfunction of a weekly test.
2.
Sodium - Storage tanks and drums of frozen sodium stored in the Reactor Building were inspected for evidence of leakage.
l Weekly inspections revealed no leakage or discrepancies.
Monthly Inspections I
1.
Controlled Area inspections - Visual inspection of fence, gates,
l doors (locked), operation of sump pump and liquid level of MK '3 i
in the FARB were conducted within specified intervals. No discrep-ancies were found during this reporting period.
Quarterly Tests
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1.
Smear Surveys - The Reactor Building and FARB were checked for presence of gamma radiation and transferable contamination. The results of these smear surveys indicated no decontamination pro-i l
cedures were required.
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Typical Smear Test Values in DPM/ft 4
Reactor Building i
I Date Q
Low g.
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7/16/79 47 43.6 14 10/29/79 40
<3.6 14 l
1/8/80 10
<3. 6 8
4/3/80 65
<3. 6 11 Fuel & Repair Building
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Date High Low h
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l 7/16/80 15
< 3.6 3
10/29/79 18 e.3. 6 8
1/9/80 10 43.6 4
4/3/80 68 43.6 11
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Semi-Annual Tests 1
Water Intrusion Alarms - Both of the required semi-annual functional i
tests of the water intrusion detectors in the FARB, lower Reactor Building and biological shield wall were successfully conducted; one i
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on 7/12/79 and the other on 1/11/80.
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Raw Water Gross Beta Activity uCi/mi l
Location 9/25/79 Date Reactor Channel 3.44 X 10-9 8.2 X 10-9 5/15/80 i
Swan Creek 7.05 X 10-9 9.1 X 10-9 5/15/80
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-9 Lake Erie 3.51 X 10 11.0 X 10 4/15/80 South Lagoon 5.57 X 10-9 20.0 X 10-9 5/15/80
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-9 Fermi I 3.45 X 10 7.2 X 10 4/15/80
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-9 Monroe 3.18 X 10 4.2 X 10 4/25/80 i
-9
-9 De t roit 2.47 X 10 5.1 X 10 4/25/80 I
Sediment Samples Gamma Activity uCi/ dry gram 137 0
0 9/25/79 Cs Ra K
-6 1.28 x 10-6 3.09 X 10
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Reactor Channel
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Swan Creek 2.13 X 10 1.82 X 10
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~0 2.10 X 10 4.09 X 10 South Lagoon i
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4/15/80 Cs Ra K
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-6 Reactor Channel
<,0.07 X 10
/ 0.6 X 10 13.0 X 10-6
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-6 Swan Creek 0.057 X 10 0.73 X 10 14.0 X 10
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South Lagoon 0.35 X 10 1.4 X 10 17.0 X 10 I
- Measurement errors greater than 100 percent computed at the 95 percent confidence level.
The above results are similar to past results indicating no inZ1uence from the plant.
Carbon Dioxide Cover Gas Pressure The semi-annual test of the Hi and to Pressure alarm settings were successfully completed on 7/13/79 and 1/11/80.
Setpoints were within tne limits established and no adjustments were required.
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Annual fests Carbon Dioxide Cover Gas Prer,sure Relief Valve The annual test of the carcan dioxide cover gas pressure relief valve setting was successfully completed on 6/23/80.
The relief 1
actuation pressure of 4.9 PSIG was verified.
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Review Committee Members of tae Review Cammittee t
E. L. Alextaderson - Chairman W. W. White - Custodian R. E. Baer - Secretary D. H. Fauser R. G. Rateick J. E. Meyers E. H. Newton The Committee met on July 23, 1979. Formal minutes of these meetings are on file.
Audit Subcommittee Present members of the Audit Subcommittee are:
Mr. E. M. Page and Mr. R. G. Ra teick. They only did one series of inspections this year due to a breakdown in the addressograph notification system.
Steps have been taken to avoid a recurrence. The Subcommittee met at the facility on April 16, May 6, and May 20, 1980 for inspection 1
of the facility and review of records and procedures in accordance I
with Technical Specifications. Memorandums containing their findings are on file.
The Review Committee will discuss the findings of the Audit Subcommittee in their regular annual meeting required to be convened between June 30, 1980 and August 31, 1980.
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VI Noteworthy Items Reactor Building Painting The outside of the Reactor Building and the below floor cooling piping were painted in November 1979.
Lower Reactor Building (LRB) Water Intrusion Alarm The LRB water intrusion alarm came in on 4/11/80. The affected area was checked and found dry. The instrument department personnel found and replaced a faulty relay in the circuit.
The r
system was returned to operation.
Biological Shield Wall (BSW) Area Water Intrusion Alarm The BSW area water intrusion a' arm came in intermittently on 6/8/80. An inspection of the area showed no water, but high i
humidity.
Instrument department personnel checked out and adjusted J
circuit to prevent further alarms due to high humidity.
FARB Back-Up Hot Sump Pump The FARB Back-Up Hot Sump Pump, which became inoperative in the i
spring of 1979, was removed and determined to be unrepairable.
It is now stored in the Hot Sump Room. A replacement pump was,.ot considered.
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