ML20093B860
| ML20093B860 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 10/03/1984 |
| From: | Woolever E DUQUESNE LIGHT CO. |
| To: | Knighton G Office of Nuclear Reactor Regulation |
| References | |
| 2NRC-4-159, NUDOCS 8410100254 | |
| Download: ML20093B860 (10) | |
Text
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'kF DuquesneUght
=,tg (412)923-1960 Nuclear Construction Division Telecopy (412) 787-2629 Robinson Plaza, Building 2 Suite 210 Pittsburgh. PA 15205 October 3, 1984 United States Nuclear Regulatory Commission Washington, DC 20555 ATTENTION:
Mr. George W. Knighton, Chief Licensing Branch 5 Of fice of Nuclear Reactor Regulation
SUBJECT:
Beaver Valley Power St stion - Unit No. 2 Docket No. 50-412 Response to Draf t SER Open Item Nos.175 and 176 Gentlemen:
Attached are the responses to the NRC Geotechnical Engineering Section's Draft SER Open Item Nos. 175 and 17 6.
Please note in the response to Open Item 176 that DLC is requesting confirmatory status for this item.
DUQUESNE LIGHT COMPANY By E. l/J. Woolever Vice President JD0/wjs At t achments Ms. M. Ley, Project Manager (w/a) cc:
Mr. E. A. Licitra, Project Manager (w/a)
Mr. G. Walton, NRC Resident Inspector (w/a)
SUBSCRIBED AND SWO TO BEFORE ME THIS M,(
Jt[ DAY OF _
3 1984.
L -
Notary Public o
ANITA ELAINE REITER, NOTARY PUBLIC ROBINSON TOWNSHIP, ALLEGHENY COUNTY MY COMMISSION EXPIRES OCTOBER 20,1986
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' Unit d Stctes Nuclhcr Regulctcry Conuniccion
.;j Mr. Gacrga W. Knighten, Chief Page 2
. COMMONWEALTH OF PENNSYLVANIA )
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COUNTY OF ALLEGHENY
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, before me, a On this Jp day of G
Notary Public in and for said Commonwealth and County, personally appeared E. J. ' Woolever, who being duly sworn, deposed and said that (1) he is Vice President of Duquesne Light, (2) he is duly authorized to execute and file the foregoing Submittal on behalf of said Company,. and (3) the statements set forth ' in the Submittal are true and correct to the best of his knowledge.
d Notary Public ANITA EL/.'NE REITER, NOTARY PUBLIC -
ROBINSON TOWNSHIP, ALLEGHENY COUNTY MY COMMISSION EXPIRES OCTOBER 20,1986 n
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6 Draft SER Open Item No. 175 (Section 2.5.4.3.3) - Measured, Estimated, and Allowable Settlement Data:
Based on the settlement data given in the FSAR Figures 2.5.4-20, and 2.5.4-46, Table 2.5-2 gives a comparison of the estimated and measured total settlement at the corners of a few Category I structures.
This table also gives the percentage of structural loading of these struc-tures as of January 10, 1984, provided by the applicant during the geotechnical audit by the staf f in January 1984. The applicant has been comparison of up-to-date requasted to docket this data, including a measured settlements with predicted values, in a ' tabular form in the forthcoming amendment of the FSAR.
The applicant needs to provide the total loading including the equipment loading, etc. in addition to civil, steel, and concrete loading.
The applicant must include, in the forthcoming amendment of the FSAR, the following information:
1.
Allowable total settlement and tilt of safety related structures.
Response
FSAR-Figure 2.5.4-46, Amendment 8 (attached), has been revised to
' include the measured settlements of BVPS-2 structures as of January 1, 1984.
The approximate pe rcentage of total structural load, including major pieces of equpment, has also been added to this figure.
FSAR Figure 2.5.4-20, Amendment 8 (at t ach ed), has been revised to indicate a change to the predicted settlement of the valve pit as a result of an increase in the design load shown in FSAR Table 2.5.4-4, Amendment 6.
FSAR Figure 2.5.4-41, Amendment 8 (attached), has been revised to agree with the loads shown in Table 2.5.4-4.
A comparison of measured and pr adic ted settlements of plant structures can be made by comparing FSAR Figures 2.5.4-20 and 2.5.4-46.
Allowable total static settlements of the individual BVPS-2 structures have not been determined. However, a prediction of - the static settlement of each structure has been made (FSAR Figure 2.5.4-20) to provide an indication of the behavior of plant structures. An extensive settlement monitoring prograri has been instituted at BVPS-2 to verify the validity of the predictions.
The settlement nonitoring data will ultimately be used -to reassess the predicted settlements of each structure taking into consideration ~ the trends shown by the measured data at each settlement monitoring point.
The individuct plant structures are not specifically designed for dif ferential settlement or tilt' of the foundation. However, observed settlements are periodically reviewed so that any unusual movements can be evaluated on a case-by-case basis.
Draf t SER Open Item No.176 -(Section -2.5.4.3.3) - Dif ferential Settlements:
The applicant must include, in the forthcoming amendment of the FSAR, the following information:
.. 2. - Allowable dif ferential settlements between structures, and those
' between structures -and pipes buried in the soil.
For the allow-able settiement 'of buried pipelines, the applicant may provide an analytical evaluation of the ability of the pipes to withstand differential settlements without exceeding allowable pipe stresses.
' Response:
DLC :is currently implementing a program to. reconcile the qualification-of BVPS-2 piping systems with the design input and as-installed configu-rations.
As part of this program, the adequacy of piping to - withstand the ef fects _ of expected dif ferential settlements.will be demonstrated by identifying the predicted and allowable dif ferential settlements between
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structures that are spanned by piping and between structures and buried
. piping extending out into the yard.
It is anticipated that this program will be _ completed in February 1986.
The aforementioned predicted and allowable 'dif ferential settlements will be incorporated into a subse-quent FSAR amendment.
Therefore, it is requested that the submittal of this information be considered a confirmatory item.
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GASEOUS WASTE TORAGE TANKS DECONT BUILDIP
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Also Available On
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-DEMINERALIZED WATER 1.6, e
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BUILDING NOTES:
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@ERVICE BUILDING e
I. e 15-SETTLEMENT AT GIVEN POINT (INCHES) l 13 I.5-AVERAGE SETTLEMENT (INCHES) 01.6
- 2. PREDICTED SETTLEMENTS OF STRUCTURES NOT SHOWN (INCHES)
AUXILIARY INTAKE STRUCTURE: 0.4 1'I ' ' I.2 0'4*
COOLING TOWER SHELL FOUNDATION: 1.0 1.0
- COOLING TOWER PUMPHOUSE: 1.4 TURBINE BUILDING
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O 40 80 120 l
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FIGURE 2.5.4-20 l
PREDICTED TOTAL STATIC O.3 SETTLEMENT BEAVER VALLEY POWER STATION-UNIT 2 FIN AL SAFETY ANALYSIS REFORT 8410100254 -0)
AMENDMENT 8 SEPTEMBER 1984
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-VALVE PIT h'
(716.0,2.5) i GASEOUS WASTE M-TORAGE TANKS DECON1 BUILDil
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(729.5, Pl SE TRENCH l FUEL BUILDING (723.5,6.3) l (717.3,6.3)
CONTROL ROOM EXTENSION l
(703.0,3.5)
ELECTRICAL CABLE TUNNEL AUXlLIARY BUILDING MAIN STEAM d
(703.0,5.7) z
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CONDENSATE 3
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BUILDING rao I
(710.5,5.8) w36 TURI gm-(717.0.2.9)
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AMINATION A
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I 6.3) h SAFEGUARDS REACTOR AREA CONTAINMENT
-REFUELING WATER STORAGE TANK (714.5,3.2)
(730.25,3.5)
(680.9,7.5) eDEMINERALIZED WATER l
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STORAGE TANK PIPE TUNNEL r-(730.25,3.4) b
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iTI CABLE VAULT RPERTURE DIESEL GENERATOR CARD BUILDING SERVICE BUILDING (725.5,4.0)
TURBINE BUILDING NOTE (715.3,3.0)
- 1. ( 719.0,1.9)- F')UNDATION ELEVATION IN FEET, LOAD IN KSF
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40 80 12 0 (719.0,l.9)
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FIGURE 2.5.4-41 (719.0,2.1)
PLANT FOUNDATION ELEVATION AND LOAD DATA BEAVER VALLEY POWER STATION-UNIT 2 FINAL SAFETY ANALYSIS REPORT l
8410100254-bt J
t AMENDMENT 8 SEPTEMBER 1984 i
DOCUV E\\T-
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