ML19323G121

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Annual Operating Rept,1979
ML19323G121
Person / Time
Site: Zion  File:ZionSolutions icon.png
Issue date: 04/30/1980
From:
COMMONWEALTH EDISON CO.
To:
Shared Package
ML19323G120 List:
References
NUDOCS 8005300420
Download: ML19323G121 (22)
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i ZION GENERATING STATION i

ANNUAL OPERATING REPORT i

19.79 DOCKETS 50-295 AND 50-304 i

COMMONWEALTH EDISON COMPANY i

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Table of Contents I.

Environmental Reports A.

Intake and Discharge Data B.

Rates of Change of Circulating Water Temperatures C.

De-icing D.

Violations of Environmental Technical Specifications E.

Malfunction of Environmental Monitoring Equipment F.

Hypochloritc Usage G.

Shoreline Erosion Status H.

Summary of Chemicals Used at Zion Station and Dischared to Lake Michigan II.

Waukegan Memorial Airport Expansion Plans III.

Modifications, Tests and Experiments IV.

Annual Occupational Exposure Data l

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Introduction This Annual Report by Commonwealth Edison Company, Zion Station transmits environmental data, near-site airport expansion plans, facility modifications and occupational exposures.

Although the Annual Report is no longer required by Zion Technical Specifications, the annual reporting of l

certain items is required.

The following areas are addressed in this report:

I.

Environmental Report regarding chemical and temperature discharges.

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II.

Expansion Plans for the Waukegan Memorial Airport.

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Modifications, tests and experiments conducted at.the plant I7.

Occupational Exposure Report l

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I ENVIRONMENTAL REPORT I

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A.

UNIT 1 INTAKE AND DISCIIARGE TEMPERATURE DATA

.i MONTil A T DP INLET TEMP. UF DISCHARGE TEMP.

F (1979)

(AVG.)

(AVG.)

(AVG.)

4 JAN.

19.3 38.0 57.3 FEB.

19.4 37.0 56.4 MAR.

16.8 37.0 53.8 APR.

16.9 40.6 57.5 l

l MAY 18.3 49.5 67.8 i

JUNE 16.0 (18 DAYS) 52.7 (18 DAYS) 68.7 (18 DAYS)

JULY 15.9 60.8 76.7 4

AUG.

16.3 61.6 77.9 SEPT.

14.3 61.6 75.9 OCT.

11.0 (5 DAYS) 62.1 (5 DAYS) 73.1 (5 DAYS)

NOV.

OUTAGE OUTAGE OUTAGE DEC.

OUTAGE OUTAGE OUTAGE i

1 TIIE INFORMATION IN THIS THE INFORMATION IN THIS THE INFORMATION IN TIIIS COLUMN WAS DERIVED FROM COLUMN WAS' DERIVED r2/

COLUMN WAS DERIVED FROM l

THE TECil. STAFF DAILY LOG SUBTRACTING THE AT AVG.

THE TECH. STAFF DAILY LOG j

WIIICH IS TAKEN FROM Tile FROM THE DISCliARGE TEMP,

WHICH IS TAKEN FROM THE STRIP CIIART.

AVG.

STRIP CHARTE.

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UNIT 2 INTAKE AND DISCIIARGE TEMPERATURE DATA MONTil ATOF INLET TEMP. OF DISCIIARGE TEMP. OF (1979)

(AVG.)

(AVG.)

'(AVG.)

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JAN.

17.7 37.5 55.2 l

FEB.

12.9 35.9 48.8 i

MAR.

18.7 (11 DAYS) 27.6 (11 DAYS) 46.3 (11 DAYS) i APR.

15.4 (11 DAYS) 44.6 (11 DAYS) 60.0 (11 DAYS) l MAY 16.7 49.0 65.7 i

JUNE 16.0 (18 DAYS) 51.6 (18 DAYS) 67.6 (18 DAYS)

JULY l's. 8 59.8 77.6 l

AUG.

17.3 61.5 78.8 SEPT.

17.4 60.6 78.0 i

OCT.

16.3 (26 DAYS) 55.3 (26 DAYS) 71.6 (26 DAYS) i

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NOV.

OUTAGE OUTAGE OUTAGE DEC.

OUTAGE OUTAGE OUTAGE TIIE INFORMATION IN TIIIS TIIE INFORMATION IN THIS TiiE INFORMATION IN TilIS COLUMN WAS DERIVED FROM COLUMN WAS DERIVED BY COLUMN WAS DERIVED FROM i

Tile TECli. STAFF DAILY SUBTRACTING TiiE a T AVG.

TiiE TECII. STAFF DAILY

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LOG WiiICII IS TAKEN FROM FROM Tile DISCIIARGE TEMP.

LOG WilICil IS TAKEN FROM 1

Tile STRIP CilART.

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TIIE STRIP CIIARTS.

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B.

UNIT 1 RATES OF CIRCULATING WATER 4T CHANGE" UNDER NORMAL STARTUP AND SHUTDOWN (1979)

DATE RATE OF CHANGE UF/HR.

DATE RATE OF/HR.

2-1-79

+ 3.8 6-24-79

- 4.5 2-2-79

+ 1.8 6-27-79

+ 4.0 3-2-79

+ 5.2 8-18-79

+ 5.4 3-6-79

+ 2.7 8-26-79

- 3.2 3-16-79

+ 3.3 8-27-79

+ 3.0 3-22-79

+ 7.5 9-1-79

+ 4.2 3-28-79

- 4.3 9-26-79

+ 1.9 4-3-79

+ 5.0 10-6-79

- 2.0 4-27-79

+ 9.0 4-27-79

+ 2.5 4-27-79

+ 5.3 5-24-79

+ 2.5 6-16-79

+ 3.2 6-23-79

- 4.8 6-23-79

+ 4.6 6-23-79

- 4.8 6-23-79

+ 4.5 Note:

The rate of change for 4 T was calculated by noting aT at the beginning and end of normal startup and shutdown.

The difference in *T was then divided by the number of elasped minutes giving an average rate per minute.

This was

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multiplied by 60 giving an average rate per hour.

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B.

UNIT 2 RATES OF CIRCULATING WATER A T CHANGE UNDER NORMAL STARTUP AND SHUTDOWN (1979)

DATE RATE OF CHANGE RF/HR 2-14-79

+ 1.8 2-14-79

+ 2.3 2-14-79

+ 4.5 2-14-79

+ 7.8 3-5-79

+5;3 4-18-79

+ 1.9 4-19-79

+ 1.5 5-8-79

+ 1.9 6-14-79

+ 1.8 7-25-79

+ 1.6 8-18-79

+ 2.0 8-18-79

+ 2.3 9-13-79

+ 6.5 10-10-79

+ 3.0 10-14-79

+ 5.0 10-15-79

+ 5.2 10-27-79

- 4.2 Note:

Method of calculation is the same as noted on Unit 1

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C.

De-Icing Zion Station operated in the De-icing Mode during the first three months of 1979.

The De-icing Mode was not required through-out the winter.

D.

Violations of the Environmental Technical Specifications I

There were three violations of the ETS during 1979.

1.

Boric Acid usage exceeded the 1000 lbs/yr limit specified in Appendix B, Section 1.3.b.

(Boric acid usage has no intent or bearing on the Appendix B concerns of liquid releases to Lake Michigan).

Reference:

LER #50-295/79-17 2.

The pH of the Waste Water Treatment Facility effluent exceeded the pH range as specified in Appendix B, Section 1.3.

The pH range is not practical and a Technical Specification change has been submitted.

Reference:

LER #50-295/79-85 3.

The pH of the Waste Water Treatment Facility effluent was lower than the limit specified in the Technical Specifications Section 1.3.

An acidic solution from the WNT drained via bad packing glands of the WNT pumps.

(The packing glands were repaired.)

Reference:

LER #50-295/79-94 E.

Malfunctions of Environmental Equipment There were no malfunctions of the environmental equipment during 1979.

F.

Hypochlorite Usage No sodium hypochlorite was used at the Station during 1979.

G.

Shoreline Erosion Status Commonwealth Edison Company is continuing to monitor the status of shoreline erosion at the Station and adjoining properties.

Monthly photographic surveys of the area are being conducted, and will be continued until such time as the company and the State of Illinois determine whether any additional restoration work will be required.

At this time, some erosion is taking place at the northern end of the property.

This erosion is caused by 60 concrete blocks submerged in about 4 feet of water off shore.

Plans are being made to remove the blocks this year.

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'USED AT ZION STATIN!3 PO LAKE ?tICllIGAN Year:

1979 Component Cooling Component Cooling.....__. _ __.

Lake Dis. Tank Lake Dis. Tank

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16.00 37.00 442.21 I

1.00 2.50 622.24 6.00 15.00 568.65 17.00 41.00 929.80 14.00 35.00 943.74 15.00 30.00 8.25 20.00 55.00 11.77 121.00 272.00 18.87 97.00 201.00 36.26 18.00 45.00 14.25 0.00 0.00 14.04 l

0.00 0.00 6.07 l

325.00 733.50 3616.15 340.00 I

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> hate free, ing and ending inventories for the year.

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II WAUKEGAN MEMORIAL AIRPORT EXPANSION PLANS

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II Waukegan Memorial Airport Expansion Plans Based aircraft numbered 250 at the end of 1979.

The notal number of operations for 1979 was approximately 210,000.

Phase two of the expansion project (the acquisition of land necessary to lengthen the main runway 1400 feet to the northeast) has not yet been completed.

Phase three (the acquisition of land to the northwest for corporate aircraft) has not started.

The following events occurred during 1979:

1.

Land was acquired for a corporate taxiway along runway 14.

2.

A new fixed base operator started business on the field.

The airport's Environmental Impact Assessment Report was submitted in 1978.

The review has not yet been completed.

Attached is FAA form 5010-1 for Waukegan Memorial Airport for 1979 as required by Technical Specification 6.6.3.C.

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III MODIFICATIONS, TESTS AND EXPERIMENTS

Attached is a descripti.on of all modifications, tests and experiments done at Zion Station during 1979, per the requirements of 10CFR50.59 (b).

There were 76 modifications completed during 1979.

The only testing conducted was the Eddy Current Test done on a Unit II Steam Generator.

There was an experiment begun on four fuel assemblies to assess the effects of extended burnup.

These modifications, test, and experiment did not involve an unreviewed safety question as defined in 10CFR50.59 (a) (2).

Modifications Completed During 1979 at Zion Station Mod. Number

  • Description M22-2-74-6 Install sight flow indicators on leakoff lines M22-2-74-63 Install vent valve in line 2SC006-10"-N aux.

Feedwater M22-2-74-183 Disconnect flow 22E 24787 & 22E 24788 Alarm circuit.

M22-2-74-110 Generator Turbine Runback M22-2-74-196 Break the partition line drain and add valve and cup at M.S.R.

M22-1-74-183 Disconnect lo flow alarm circuit M22-1-74-110 Generator turbine runback M22-1-74-138 Install leakoff lines to condenser on MSR M22-34 Cathode Protection M22-2-75-6 Install Nuclear Axial offset alarms M22-1-75-100 Interlock Relay R-12 with OAOV-SWOO21 Sol'enoid on Diesel C.S. Pump M22-2-75-30 Spray additive tank level in5tcation M22-1-75-25 Emergency oil pump FW pump turbine M27-2-76-80 RCP Motor Drip Pan MOD.

M22-1-76-67 TD-Install Filter Element and Valve on to Fill Lines M22-36 Upgrade Misc. structural beams M22-37 Misc. Cable tray enclosures M22-34 Fire Dampers (TV)

M22-35 Fire Dampers (PV)

M22-39 Process monitor for fire sump discharge (TD)

  • M22-A-79-B is interpreted; M22:

Mod. for Zion Station; A: Specific unit (either 1,2 or (both units) ) ; 79: year assigned; B: sequence number for specific mod.

Modifications Completed During 1979 (con'tl at Zion Station Mod. Number

  • Description M22-31 Ionization Detectors M22-32 Various sprinkler system changes (FP)

M22-33 Battery room oil exhaust duct reroute. (TV)

M22-1-79-12 FH-Modify Gripper Air Cyclinder to use Air on Gripper M22-1-79-15 SI-Modify annu & comp. Logic to match safeguards actuation logic M22-1-79-17 AP-Install Test circuits on Swag valves to test contacts for Welded Shut M22-2-79-6 Eliminate Pzr level input to safeguards logic actuation M22-2-79-10 MS-replace relays R9 & 10 ABCD with more reliable M22-2-79-8 Install switches in aux Elec. Rm. & Reroute cables to isolate control rm. instruments M22-3 MU Demin Acid piping upgrade M22-4 FP Failure detection system M22-6 Auto Fire Supp for CC pump area M22-2-78-23 LPMS-Complete install of Unit 2 loose parts net-work M22-2-78-24 RCC Change fixture tensiometer M22-2-78-25 CS piping containment riser M22-2-78-13 Containment Riser covers M22-16 Control room hose station M22-2-78-20 Part length rod removal M22-2-78-21 Install cabling for temporary Feed to vacuum fill rig.

M22-2-78-2 NIS Power Regulator Removal M22-6 Auto Fire Suppressor for Aux FP & S/D panel M22-2-78-9 CRD Vent Fan Lead Box M22-1-78-12 FWP 1B,1C Control SYS replacement M22-1-78-19 Frequency monitoring instruments

_w Modifications Completed During 1979 (con't) at Zion Station Mod Number

  • Description M22-1-77-44 Turbine modification warranty work M22-1-77-56 Cable spreading ducts M22-2-77-8 Install tube hold down service on 2AE, 2CE, 2BW, 2CW MSR's M22-2-77-56 Cable spreading ducts M22-53 CS pump room fire protection M22-2-77-54 Fire Dampers

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O M22-1-77-36 EHC Computer inputs M22-y-77-55 Fire Dampers (AV)

M22-2-77-29 2A FWP oil pump interlock M22-1-78-24 FH-RCC change fixture tension on meter M22-2-79-13 AP-Replace W Control switches to eliminate reopening valves after an SI M22-2-79-15 SI-Modify Ann. & Comp. logic to match safeguards actuation Logic M22-2-79-17 AP-install test circuit on Swag valves to test contacts for welded shut M22-2-79-4 MS-Internal mod to 2BE MSR by adding Performated plates M22-1-79-10 MS-Replace relays R9 & 10, ABCD with more reliabl M22-2-79-20 SI-Make Vent hole in probe to minimize pressure influence pOO

Tests Eddy Current testing and evaluation of 2D Steam Generator was conducted during the period of March 12, 1979 through March 20, 1979.

The final inspection results of the 407 tubes tested revealed no reportable indications and insig-nificant denting of approximately 100 tubes.

All testing and evaluation was conducted to approved written procedures.

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EXPERIMENTS An experiment is being conducted to assess the extended lifetime capabilities of spent fuel assemblies.

Four pre-viously discharged fuel assemblies

(~ 38000 MWD /MTU average burnup) have been loaded into the Unit II Cycle 4 core for additional irradiation.

These assemblies have been scheduled for inspection in 1980 at the end of one cycle of extended burnup ( ~ 47000 MWD /MTU average burnup).

In anticipation of increased burnup, Technical Specifi-cation changes were submitted to and accepted by the NRC.

These Technical Specifications addressed the rod bow penalty and clad collapse concerns.

This experiment is an EPRI/ Westinghouse program initiated by the Department of Energy to improve uranium fuel utilization without reprocessing by extending the burnup of nuclear fuel elements.

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IV Annual Occupational Exposure Data

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- l Annual Occupational Exposure Data for Zion Station During 1979 These data were cubmitted to the Nuclear Regulatory Commission under a separ* '

cover.

A letter from N. E. Wandke, Superintendent, Zion Station, to Mr. James G. Keppler, Regional Director dated February 4,1980 transmitted the exposure data.

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