ML19221B087
| ML19221B087 | |
| Person / Time | |
|---|---|
| Issue date: | 03/31/1979 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| References | |
| NUREG-75-087, NUREG-75-087-10.4.3, NUREG-75-87, NUREG-75-87 10.4.3, SRP-10.04.03, SRP-SRP-10.04.03, NUDOCS 7907120395 | |
| Download: ML19221B087 (2) | |
Text
NUREG 75/087 gn.r a g o
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- 4 U.S. NUCLEAR REGULATORY COMMISSION
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g STANDARD REVIEW PLAN WP%,^ /,
OFFICE OF NUCLEAR REACTOR REGULATION SECTICN 10.4.3 TURBINE GLAND SEALING SYSTEM REVIEV RESPCNSIBILITIES Primary - Ef fluent Treatment Systems Branch (ETSB)
Secondary - None AREAS OF REVIEW At the construction permit (CP) stage of review, ETSB reviews the information in the applicant's safety analysis report (SAR) in the specific areas that follow. At the operating license (OL) stage of review, the ETSB revie. consists of confirming the design accepted at the CP stage.
The turbine gland sealing system design, design objectives, method of operation, and factors that influenca gaseous radioactive material handling, e.g.,
source of sealing steam, system interfaces, and potential leakage paths are reviewed. The ETSB review includes pipirg and instrumentation diagrams (P& ids).
Provisicns to sample and monitor radioactive materials in gaseous effluents are l
resit.wed in SRP Sections 11.5 and 9.3.2.
The quality group classification of piping and equipment and the bases of the design criteria selected are reviewed.
Provisions for tuntrolling the release of radioactive materials from t N glani seal condenser vent are reviewed in SRP Section 11.3.
Durirg the OL stage, the ASB reviews the potential effect of high energy pipe breaks l
within this system on safety-related equirment.
II.
ACCEPTANCE CRITERIA The applicant's design should meet the following criteria:
The turbine gland sealing system should be designed to provide for the collection and condensation of sealing steam and the venting and treatment (as required in Ref. 1) of noncondensables. Quality Group D as defined in Regulatory Guide 1.26 (Ref. 2) and a nonseismic design classification are acceptable design criteria for this cystem.
USNRC STAND ARD REVIEW PLAN
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III. REVIEW PROCEDURES The reviewer selects and emphasizes material from this SRP section, as may be appropriate for a particular case.
ETSP reviewr the equipment quality group classification.
ETSB reviews the system P& ids to determine the source of sealing steam and the disposit. ion of steam and noncondensables vented from the giand seal. Where sealing steam from primary cc)l'nt condensate is used, the review includes the radiological processing rad monitoring provisions in accordance wita SRPs l!.3, 11.5 and 9.3.2.
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' 'v. FVALUATION FINDINGS ETS8 verifies that sufficient information has been provided and that the review is 4dequate to support conclusions of the frallowing type, to be included in the staff's cafe'v avaluation report:
"TFe turbine gland sealing system includes the equipment and instruments to reovide a source of sealing steam to the annulus space where the turbine and large steam valve shafts penetrate t:,eir casings. The scope of our review ir.cluded the source of sealing steam, 31d the provisions incorporated to manitor and control releases of radioactive n terial in gaseous effluents in accordance with General Design Criteria 60 and 64.
We have reviewed the applicant's system descriptions and design criteria for the components of the turbine gland sealing sy stem and found them consistent with RegJlatory Guide 1.26.
"The basis for acceptance in our review h3s been conforaance of tne applicant's designs, design criteria, and design b3ses for the turbine gland sealing system to t% 3pplicable regulations and regulatory guides referenced above. Based on I
our evaluation, we find the proposed tJrbine gland sealing system acceota t
V.
_R_E F E R E NC E S l.
10 CFR Part 50, Appendix A, General Desig, Criterion 60, " Control of Releases Radica;tive Material to the Environrent,' and criterion 64, " Monitoring Radioact1.
Peleases."
2.
Pegulatory Guide 1.26, " Quality Grcup Classifications and Standards for Water,
Stear, and Radioactive-Waste-Containing Components of Nuclear Power Plants."
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Rev. 1 10.4.3-2 b) t