ML20214G752
| ML20214G752 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 06/01/1977 |
| From: | Sihweil I Office of Nuclear Reactor Regulation |
| To: | Varga S Office of Nuclear Reactor Regulation |
| References | |
| CON-WNP-0180, CON-WNP-180 NUDOCS 8605220478 | |
| Download: ML20214G752 (3) | |
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DISTRIBUTION:
Docket File 397 JUN 1 197 I NRR-Rdg SEB-Rdg Docket No. 50-397 l'EITRANDUM FOR:
S., A. Varga, Chief, Light Water Reattors Branch #4 Division of Project Management FRCM:
I. S. Sihweil, Chief StnJctural Engineering Branch Division of Systems Safety
SUBJECT:
WASilINGTON PUBLIC POWER SUPPLY SYSTEM - WPPSS NO. 2 ACCEPTANCEREVIEWFORTHEFSAR(SEB:1122)
Plant flame: WPPSS No. 2 Licensing Stage: Acceptance Review Project Number: 50-397 Responsible Branch and Project !!anager: LWR-4, D. Lynch Applicant's Response Date necessary for Completion of Next Action Planned on Project: Unknown Description of Response: Answers to Questions Review Status: Complete The FSAR submitted by the applicant has been reviewed for its acceptability by P. T. Kuo of Section A, Structural Engineering Branch. The enclosure, Preliminary Review Notes, presents the details of the review.
The overall assesscent indicates that in the reviewed sections of assigned responsibility, about 5% of the information currently equired is consid-ered nissing.
It is, nevertheless, recommended that the application be accepted and that the deficiencies and the preliminary areas of concern be discussed with the applicant during technical meetings, i
i I. S. Sthweil, Chief i
Structural Engtraering Branch Division of Systems Safety
Enclosure:
Preliminary Review Motes l
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R. Boyd f)p l
W. Mcdonald cc w/oncl:
R. Heineman D. Lynch F. Schauer i
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WASHINGTON PUBLIC POWER SUPPLY SYSTEM WPPSS N0. 2 FSAR STRUCTURAL ENGINEERING BRANCH DOCKET NO. 50-397 PRELIMINARY REVIEW NOTES
. AREAS OF REVIEW The following sections, for which the Structural Engineering Branch has the primary review responsibility, were reviewed for completeness in ac-cordance with the September 1975 issue of the " Standard Fonnat...".
l September 1975 FSAR STANDARD FORMAT SECTION Section 3.3.1 3.3.1 j
'332 3.3.2 i
3.4.2 3.4.2 i
j 3.5.3 3.5.3 3.7 3.7
- 3.3 3.8 I
1 IDENTIFICATION OF MAJOR DEFICIENCY AREA 130.1 Provide the load ccmbination used for detsmining the total j
(3.3.2.2) tornado load resulting fro:n missOes, differential pressures l
and wind loads, i
130.2 Provide details of the method used for predicting the overall l
I33) response of missile barriers. The description should cover l
the mathematical nodel, the forcing function, the method of detemining ductility in stru(.tural alew.nts, and the basis cf the ductility ratios used in the calculation.
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d 130.3 Provide detailed criteria employed for decoupling systems j
(3.7.2.3) and subsy5tems in establishing the analytical models.
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130.4 Provide detailed procedures for development of floor re-(3.7.2.5) sponse spectra. The description should provide information regardilig the time interval used for numerical integration, the frequency (or period) increment used for computing spectral values, peak widening, etc.
I 130.5 Provide detailed procedures for predicting the stresses of (3.7.2.12) the buried pipes both in the free field and at the connections to various buildings.
130.6 Provide detailed procedures for calculating overturning and (3.7.2.14) sliding potential.
Infonnation should include consid4 rations of three Components of earthquake motions and hydrostatic pressures (Both lateral and uplift pressures).
130.7 Provide a summary of all the corrputer programs used in the l
analysis.
Information should include descriptions of assump-
- 3 3.8) tions, limitations, capebilities, and any of the pertinent features associated with the use of these computer programs.
In addition, adequate verification of these computer programs I
should also be providad.
PRELIMINARY AREAS OF CONCERN 3 4
130.8 Clarify the procedures used for determining the nuober of (3.7.2.3) masses included in the mathematical model.
130.9 Pool dynamic loads are not included in the discussion of
'h loads and load combination pending the submission of the Plant Design Assessment Report. These sections should be revised accordingly when information becomes available.
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