HNP-95-090, Submits Addl Info Re RAB Emergency Exhaust Sys Design & Licensing Basis Issues
| ML18011B029 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 10/10/1995 |
| From: | Robinson W CAROLINA POWER & LIGHT CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML18011B030 | List: |
| References | |
| HNP-95-090, HNP-95-90, NUDOCS 9510180164 | |
| Download: ML18011B029 (4) | |
Text
PRIORITY 1 (ACCELERATED RZDS PROCESSING)
REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
ACCESSION NBR:9510180164 DOC.DATE: 95/10/10 NOTARIZED: NO FACIL:50-400 Shearon Harris Nuclear Power Plant, Unit 1, Carolina AUTH.NAME 'UTHOR AFFILIATION ROBINSON,W.R.
Carolina Power
& Light Co.
RECIP.NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)
SUBJECT:
Submits addi re RAB emergency exhaust sys design basis issues.
DISTRIBUTION CODE: A001D COPIES RECEIVED:LTR ENCL SIZE:
TITLE: OR Submittal:
General Distribution
'OTES:Application for permit renewal filed.
DOCKET 05000400 P
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LTTR 18 ENCL 17
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Carolina Power 8 light Company PO Box 165 New Hill NC 27562 William R. Robinson Vice President Harris Nuclear Plant OCT 1 0 1995 SERIA: HNP-95-090 United States Nuclear Regulatory Commission ATTENTION: Document Control Desk Washington, DC 20555 SHEARON HARRIS NUCLEARPOWER PLANT DOCKET NO. 50-400/LICENSE NO. NPF-63 REACTOR AUXILIARYBUILDINGEMERGENCY EXHAUST SYSTEM DESIGN AND LICENSING BASIS ISSUES - ADDITIONALINFORMATION Gentlemen:
On September 23,1995, Carolina Power and Light Company (CP&L) submitted a letter to the NRC (HNP-95-083) which addressed design and licensing basis issues associated with the Reactor AuxiliaryBuilding (RAB) Emergency Exhaust System.
A meeting to discuss these issues with the NRC staff was held on September 25,1995 at NRC headquarters.
As part of discussions at the meeting regarding the atmospheric dispersion factors (X/Q) used in the Technical Support Center dose calculation, amplifying'information was provided regarding X/Q adjustment factors.
In a manner similar to the original submittal, a discussion of these adjustment factors and the associated proposed Final Safety Analysis Report (FSAR) revision are enclosed for your review and approval as part of the overall issue.
The information enclosed is only an amplification of the previously submitted information; therefore, the original evaluations for no significant hazards and environmental considerations remain valid. Questions regarding this matter may be referred to Mr. T. D. Walt at (919) 362-2711.
Sincerely, RWP/rwp Enclosures c:
Mr. S. D. Ebneter Mr. S. A. Elrod Mr. N. B. Le W P
~.. (v09 t 9510180ib4 951010 PDR ADOCK 05000400 P
PDR State'Road 1134 New Hill NC Tel 919 362-2502 Fax 919 362-2095 06
ENCLOSURE 1 TO HNP-95-090 FSAR SECTION CHANGE
SUMMARY
R ecti 2
2 c e V'
s Modified the description to note that postulated post-accident assumptions and source terms are described in FSAR Section 15.6.5.4.4 and to indicate that the atmospheric dispersion factors (X/Q) used in the Technical Support Center (TSC) dose calculations were developed using the methodology described in NUREG/CR 6331, Atmospheric Relative Concentrations in Building Wakes, May 1995.
Further amplified the discussion to note that these dispersion factors were adjusted for variability in wind direction using the Murphy and Campe methodology.
No adjustments were made for wind speed.