ML20210S826
| ML20210S826 | |
| Person / Time | |
|---|---|
| Site: | Satsop |
| Issue date: | 04/09/1976 |
| From: | Maccary R Office of Nuclear Reactor Regulation |
| To: | Deyoung R Office of Nuclear Reactor Regulation |
| References | |
| CON-WNP-1642 NUDOCS 8605290430 | |
| Download: ML20210S826 (4) | |
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Docket No :
& 509 R. C. DeYoung, Assistant Director for Light Water Reactors Division of Project Management WASHINGTON PUELIC POWER SUPPLY SYSTEM, DOCKET NOS. 50-508 & 509 Plant Name: Washington Nuclear Project No. 3 (WJP-3) and No. 5 (WP-5)
Docket Nos.: 50-508 and 50-509 Licensing Stage: PSAR Responsible Branch and Project Manager: LVRf3, A. Sournia Responsible Branch and Technical Reviewere: sMED, F. Cherny, P. Y. Chen Requested Completion Date: 4/9/76 Description of Response: Supplement to Safety Lvaluation Report, Sections 3.6 nad 3.9 Review Status: Conplete Since our SER input letter of December 19, 1975, the applicant hu submitted 6 more amendciento to the PSAR (op to and including Anendment 33). As yoa are aware, the SER input originally provided by MLF identified ite:ns in SAR sections 3.6.2 and 3.9.2.5 requiring resolution consistent with 'iEB technical poaltious. With the submittsi of Anen.!-
ment 33 of the PSAR, we consider these items resolved as described below.
Section 3.6._2_
In this section of the PSAR, the applicant has provided criteria acceptable to !!Lb for protection against the dynamic effects of postulated pipe bre.@.s in high enern piping outside containnent.
llowever. prior to the submittal of Amendment 33, the applicant had, in addition, referencel a topical report ETR-1002, " Design Consideration for the Protection from the Effect of Pipe Rapture."
This report also defines criteria to be used in providing protection fron these postulated events but does so in sonewhat more detail than is required in an SAR.
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APR p gg R. C. DeYount, This report is under review on a generic basis by several DSS branches and the review is not yet co.spleted. This it has been necessary to identify this as an unresolved itest in the SER.
In Amendment 33, the applicant has deleted all reference to this report from section 3.6.2 of the PSAR. All other criteria previously judged complete and accept-able by MEB remains unchanged. As we have advised the LPlf, the not result of this deletion is that section 3.6.2 of the PSAR now contains complete and acceptable criteria with no references to material which the staf f has nc.c completed its review of. The resulting SER supplement input for section 3.6.2 is attached to this letter.
Section 3.9.2.5 As noted in our 5D1 input the applicant has referenced two recently developed conputer codes, LOADFACT and Pipestress 2010, for use in analyzing the effects of dynauic loadings associated with the sudden operation of pressure relieving devices. Fe required that the applicant establish the validity of these codes for the type of analysis they will be utilized for.
The applicant had sube.itted reports of computer runs made to establish the validity for this type of analysis. Due to the timing of the sub.nittals the review was not completed in ti:ae for our findingo to be included in the SER.
The review has now been completed. We are satisfied that the applicant has established the validity of these codes consistent with our technical position as described in Standard Review Plan 3.9.1.
Our SER Supplement input for this section is attached.
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R. R. Maccary, Assistant Director for Engineerine, Division of Systems Safety ec w/ enc 1:
R. E. IIaineman, SS 0 Parr, P't J. P. Knight, SS A. Bournia, PM II. L. Brammer, Sci F. C. Cherny, Se Docket Files 50-508 & 509 P. Y. Chen, SS NRR Reading File DSS:MEB File cc w/o encl:
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Hechanical Engineering Branch Division of Systems Safety Washington Nuclear Project No. 3 and No. 5 Supplement to Saf ety Evaluation Report 3.6.2 Protection Against Dynamic Effects Associated with the Postulated Rupture of High Energy Piping Outside Containment In the SER we reported that the applicant had submitted a topical report, ETR-1002, which was to define in more detail criteria to be used in providing protection from these postulated events. We noted that the report was under review.
In Amendment 33 of the PSAR, the applicant deleted reference to this report and has advised that appropriate criteria from the report has been incorporated in the text of the PSAR.
As we reported in the SER, we have reviewed this criteria and find it acceptable. With deletion of the reference to the topical report we consider this item to be resolved.
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's' 3.9.2.5 Design and Installation Criteria, Pressure Relieving Devices We reported in the SER that the applicant had referenced two
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recently developed computer codes for.use in analyzing the ef fects of dynamic loadings associated with the sudden operation of pressure relieving devices. We noted that we would require the applicant to establish the validity of these codes for this type of analysis in accordance with our technical positions.
1' In Amendment 30 of the PSAR the applicant submitted progran validation information for PIPESTRESS 2010.
Also'in Amendment 30, the applicant stated that applicable validation information for LOADEACT could be obtained from reviewing the elastic solution validation results for a code entitled Plast 2267, as contained in topical report ETR-1002,
" Design Considerations for the Protection from Effects of Pipe Rupture."
We have reviewed this information and find the validations as submitted comply with our technical positions as described in NRC Standard Review Plan 3.9.1.
Therefore, we consider this issue to be resolved.
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