ML20214P020
| ML20214P020 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 05/28/1987 |
| From: | Olshan L Office of Nuclear Reactor Regulation |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8706030178 | |
| Download: ML20214P020 (15) | |
Text
_ - _____ _
May 28, 1987 Dockets Nos. STN 50-454/455 LICENSEE:
Commonwealth Edison Company FACILITIES:
Byron Station, Units 1 and 2
SUBJECT:
MEETING
SUMMARY
- COOLING TOWER TEST PROGRAM On May 13, 1987, a meetin
' Essential Service Water (g was held in Bethesda, Maryland to discuss the ESW) Cooling Tower Test Program at Byron. Members of the NRC and the licensee, and consultants for both, were present at the meeting. -Attendees are listed in Enclosure 1.
Handouts distributed at the meeting are included in Enclosure 2.
The pre-operational test program for Byron 2 was not able to demonstrate that the ESW cooling towers had sufficient heat removal capability to meet their design basis. The licensee, in a letter dated January 14, 1987, committed to conduct performance testing of the ESW cooling towers. The licensee established a contract with Environmental Systems Corporation (ESC) on January 15, 1987 to conduct-the necessary tests.
1 During the meeting, ESC described to the NRC, and its consultant from Idaho
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National Engineering Laboratory, the tests that ESC intends to conduct on the l
ESW cooling towers. The tests are expected to take about three weeks, with completion anticipated for early June 1987.
At the conclusion of the meeting, the NRC and its consultant stated that they saw no reason to discourage. ESC from running the tests as proposed and that
-the NRC would closely monitor the test results.
In addition, the NRC consultant suggested that the licensee should perform additional analyses, taking credit for the moderating effect of the water stored in the cooling tower basin, to justify plant operation with higher wet bulb temperatures than those committed to in the January 14, 1987 letter.
In the t
Janua ry.14,1987 letter, the licensee committed to place one. unit in cold shutdown if the wet bulb temperature exceeds 75 F (65 F with a tornado warning). This committment was the subject of a license condition (Item A,
.. to the January 30, 1987 full power license for Unit 2).
Original signed by/
Leonard N. 01shan, Project Manager Project Directorate III-2 l
Division of Reactor Projects - III, IV, l
V and Special Projects i
Enclosures:
l As stated I
i cc w/ enclosures:
See next page 0FFICIAL RECORD COPY PDIII-2:PM PDIII-2:M LOLshan:cb DMuller f/ A' 5/??/87 547/87~
8706030178 870528 PDR ADOCK 05000454 P
PDR-
Mr. Dennis L. Farrar Byron Station Commonwealth Edison Company Units 1 and 2 CC:
Mr. William Kortier Ms. Diane Chavez Atomic Power Distribution 520 Gregory Street Westinghouse Electric Corporation Rockford, Illincis 61108 Post Office Box 3o5 Pittsburgh, Pennsylvania 15230 Regional Administrator, Region III U. S. Nuclear Regulatory Commission 799 Roosevelt Road Michael Miller Ishan, Lincoln & Beale Glen Ellyn, Illinois 60137 One First National Plaza Joseph Gallo, Esq.
42nd Floor Chicago, Illinois 60603 Isham, Lincoln & Beale Suite 1100 1150. Connecticut Avenue, N.W.
Mrs. Phillip B. Johnson 1907 Stratford Lane Washington, D. C.
20036 Rockford, Illinois 61107 Douglass Cassel, Esq.
Dr. Bruce von Zellen 109 N. Dearborn Street Department of Biological Sciences Suite 1300 Northern Illinois University Chicago, Illinois 60602 DeKalb, Illinois 61107 Ms. Pat Morrison Mr. Edward R. Crass fotS68 Thunderidge Drive Nuclear Safeguards & Licensing
// Rockford, Illinois 61107
=
Sargent & Lundy Engineers Ms. Lorraine Creek 55 East Monroe Street Chicago, Illinois 60603 Rt. 1, Box 182 Manteno, Illinois 60950 Mr. Julian Hinds U. S. Nuclear Regulatory Commission Byron / Resident Inspectors Offices 4448 German Church Road Byron, Illinois 61010 j,
Mr. Michael C. Parker, Chief l
Division of Engineering Illincis Department of l
Nuclear Safety 1035 Outer Park Drive Springfield, Illinois 62704 i
Mr. Dennis L. Farrar Byron Station (other)
Commonwealth Edison Company Units 1 and 2 cc:
Attorney General 500 South 2no Street Springfield, Illinois 62701 ESI Review Coordinator Environmental Protection Agency Region V 230 S. Dearborn Street Chicago, Illinois 60604 Chairman, Ogle County Board P. O. Box 357 Oregon, Illinois 61061
,/
MEETING ATTENDEES - COOLING TOWER TEST PROGRAM 4
May 13, 1987 4
NRC Commonwealth Edison i-GBagchi KAinger DMuller KBrienzo L01shan HCampbell LReiter KHayes GStaley Idaho National Engineering Laboratory Environmental System Corp.
NPace KWilber JYost
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BYRON NUCLEAR PLANT ESW COOLING TOWER TEST PROGRAM MEETING 5/13/87 8
1.0 Introduction of Participants 1.1
-NRC and Consultants 1.2 Commonwealth Edison 1.3 ESC
2.0 Background
2.1 Requirement for further thermal tests:
(a) Improve confidence in data and (b). remove operating restrictions 2.2 Design requirements, partial load testing and extrapolations 3.0 Cooling Tower Fundamentals 3.1 Cooling Tower Designs and Components 3.2 Definition of Terms
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zh 4.0 Test Plan
- Test Objective: to gather defensible performance data which can be confidently extrapolated to the design conditions
- Design Conditions and Expected Test Conditions
- Establishment of performance curves
- Instrumentation and Data Acquisition
- Analysis - Extrapolation and Uncertainty Test Parameters:
Hot Water Temp Airflow rate Range Waterflow rate Wetbulb 5.0 Conclusions and Action Items 9316b
4 Test Program Sunmary 1., Conduct series of tests at following. conditions:
o IIWl' co ns t a n t a t ~ 9 8* F o
WBT ranging f rom ~ 50 to 60*F o
L/G ranging from 1.8 to 5.7 (L at ~10,000, 13,000 and 16,000 GPM)
(G at full and half fan speeds) 2.
For each test point, determine the following:
o KaV/L from numerical integration of Merkel Equation dt w h,-ha o
liest Balance Error 2(QWAT-OAIR WAT + OAIR,
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Fan Performance (Q vs P and I
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o Estimate of Spray Zone Heat Transfer Rate 3.
Develop tower cell characteristic curve from regression of test points - KaV/L vs L/G 4.
Use characteristic curves, with hot water effect correction, to develop performance curves.
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TEST MEASUREMENTS PARAMETER NO. OF MEASUREMENT MEASUREMENT LOCATION FREQUENCY Cold Water Temperature 20 15 SEC Ilot Water Temperature 2
15 SEC Inlet Wet Bulb Temperature 8
15 SEC Inlet Dry Bulb Temperature 4
15 SEC Exit Wet Bulb Temperature 8
15 SEC-4 Fill Inlet Water Temperature 8
15 SEC Air Flow Rate 8
15 SEC
%5 Fan Motor Input Power 1/ Motor Windin,g 15 SEC i
Wind Speed 1
15 SEC +
Strip-Chart Wind Direction 1
Strip-Chart Water Flow Rate 1
2 MIN. or 10/ Test Fan Inlet Static Pressure 8
2/ Test Barometric Pressure 1
2/ Test Fan Rotational Speed 1
2/ Test r
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DRIFT ELI MIN ATORS l'sNNNUNAN ANNNNUOlONN N NNNON'sOlONO Ul
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l TEST MEASUREMENT INSTRUMENTATION 1
INSTRUMENT PARAMETER OVERALL ACCURACY Fluke 2400B DAS Temperature
- 0. 0 5* F with Thermistor Probes Fluke 2400B DAS Analog 0.003V
- Propeller Anemometer Air Flow 1%
- Current and Potential Fan Motor Input Power 0.5%
Transformers, Transducer
- Climet Wind Speed Wind Speed 0.5 MPH Qx.
(2 MPH Thresh)
Climet Wind Direction Wind DirectYon 2*
with Strip-Chart Simplex Pitot Tube with Water Flow 1.5%
U-tube Manometer l'
Airflow Developments Fan Inlet Static Pressure 0.001 in Wa j
Inclined Manometer l
Aneroid Barometer Barometric Pressure Inm Hg
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l Gen Rad Strobotal Fan Rotational Speed 1 RPM l
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Expected Uncertainty Measurement Uncertainty (Instrwnent Error, Time and Spatial Variations):
Un = 0.03 Ug rp = 0. l* F UG = 0.05 UCWT = 0.2*F UWBT = 0.5*F Characteristic Curve Uncertainty (Measurement Uncertainty, Curvature and Model Error Effects):
UCC = 0.05e Uncertainty in Performance Curve CWT at Design Point (Characteristic Curve, Hot Water Correction and Other Uncertainties UCWT PC e
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May 28,' 1987 DISTRIBUTION
+1 Docket; File-NRC PDR Local PDR PDIII-2 Reading File DMuller L01shan 0GC-Bethesda EJordan JPartlow ACRS (10)
GBagchi CReiter GStaley 9
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