ML18030A313

Submits Info Re Meteorological Sys,In Response to NRC Informal Questions.Dual Source Power Supplies Will Be Provided to Both Primary & Backup Towers.Fsar Will Be Revised in mid-Sept.Diagram of Primary Tower Encl

ML18030A313
Person / Time
Site:	Susquehanna
Issue date:	06/16/1981
From:	Curtis N PENNSYLVANIA POWER & LIGHT CO.
To:	Schwencer A Office of Nuclear Reactor Regulation
References
RTR-NUREG-0654, RTR-NUREG-654 PLA-849, NUDOCS 8106180407
Download: ML18030A313 (4)

Text

REGULATOR NFORMATION DISTRIBUTION S . FM (RIOS)

ACCESSION NBR:8106180407 OOC ~ DATE: 81/06/16 NOTARIZED: NO DOCKET ¹ FACIL:50 387 Susquehanna Steam Electr ic Stations Unit 1, Pennsyl va 050~38.

50 388 Susquehanna Steam Electr ic Stations Unit 2R Pennsyl va.,5'000 88 AUTH;NAME AUTHOR AFFILIATION CURTISrN ~ WE Pennsylvania Power L Light Co ~

RECIP ~ 4AME RECIPIENT AFFILIATION SCHWENCERPA ~ Licensing Branch 2

SUBJECT:

Submits info re meteorological sysiin response. to NRC" informal questions, Dual source power suoolies will to botn primary 8 backup towers FSAR will oe ~

be'rovided revised in mid Sept Diagram of orimary tower TITLE:

COBE: 000'IS COPIES RECE IVES:LTR PSAR/FSAR AMOTS and Related Corr esoondence

/ ENCL g encl'ISTRIB~JTION SIZE:

NOTES!Send ILE 3 copies FSAR R all amends F 1 cy.'BWR LRG PM(L,RIB) 05000387 Send IEE 3 copies FSAR 5 all amends' cy:BWR~LRG PM(CRIB). 05000388 REC IP I ENT COPIES RECIPIENT COPIES IO CODE/NA<E LTTR ENCL IO CODE/NAME LTTR ENCL ACTION! 4/D LI CENSNG 1 0 LIC BR ¹2 BC 1 0 LIC BR ¹2 LA 1 0 STARKgR ~ 04 1 1 INTERNAL: ACCID EVAL BR26 AUX SYS BR 27 1 1 CHEM ENG BR CORE PERF BR ii 10.

1 1

1

. 1 1

1 CONT SYS BR EFF TR SYS BR12 09 1 1

1 1

EMERG PREP 22 1 0 EMRG PRP OEV 35 1 EMRG PRP LIC 36 3 EQUIP QUAL BR13 3. 3 FE'4A REP 'OIV 39 1 GEOSCIENCES 28 2 2 HUM FACT ENG 40 1 1 HYD/GFO BR 30 2 2 IKC SYS BR 16 1 1 I8E 06 3 L IC GUID BR 33 1 1 LIC QUAL BR 32 1 1 MATL ENG BR 17 1 1 MECH ENG BR 18 1 1 MPA 1 0 NRC PDR 02 1 1 OELD 0 OP LIC BR . 34 1- 1 POrr'ER SYS BR 19 1 1 PROC/TST,REV 20 1 1 QA BR 21 1 1 A4 S BR22 1 1 REAC SYS BR 23 1 1 Q~~F- - - 01 1 1 SIT ANAL BR 24 1 1 STRUCT ENG BR25 1 EXTERNAL: ACRS 41 16 16 LPDR 03 1 1 NSIC 05. 1 1 TOTAL NU ABER OF COPIES REQUIRED LTTR EiVCL

TV/O NORTH NINTH STREET, *I.I.ENTOV/N, PA. 18101 PHONEs (215) 770-515 I tloi1MAtt VA CURTIS Vice President-Engineenng 4 Constn.ction-PIucleat 770.5341 June 16, 1981 Mr. A. Schwencer, Chief Docket Nos. 50-387 ~q, 3 ) JP<

Licensing Branch No. 2 388 Division of Licensing U.S. Nuclear Regulatory Commission f.6 ~(/r )if)

Washington, D.C. 20555 JU;; 1 7'1981 Q'i.s. ttttct~ <t' C0avat SSI0H SUSQUEHANNA STEAM Electric STATION UPGRADED METEROLOGICAL SYSTEM ER100450 FILE 841-2 '~/,

PLA-849

Dear Mr. Schwencer:

The following information is in response to the Staff's informal questions regarging the meterological system.

l. Based on the requirements of NUREG-0654 Appendix 2 and proposed Revision 1 to Regulatory Guide 1.23, the attached diagram outlines the upgraded meterological system using the existing meterological tower. Except for the addition of a tipping-bucket rain gauge, all the instrumentation on the primary tower will be as described in the FSAR. In addition,.a backup 10 meter pole will be provided (the location is being evaluated) with sufficient instrumentation to measure wind speed, wind direction and sigma Q. These parameters will be available in the control room on strip charts and the TSC and EOF through'he plant process computer.

2. Dual source power supplies will be provided to both the primary and backup towers. A two-hour uninterruptible power supply will be provided for the primary tower.

3. The emergency off-site dose projection for airborne release. from Susquehanna will utilize a gaussian dose projection model. This Class A model will include fixed terrain correction factors as determined by our meterologist, and four stability classes.

4. Remote interrogation capability for meterological data and dose goO~

projection results will be provided via the Emergency Response 5 Computer System which will be functional by July, 1984. Prior to that time, this data will be available for verbal transmittal to NRC. /

8'3O6)8 G

Mr. A. Schwencer June 17, 1981 Page two The FSAR will be revised in mid-September to include the fuctional description of the upgraded meterological system. The Emergency Plan will be revised at the same time to describe the radiological dose projection methods to be used at Susquehanna during emergencies.

truly your s, N.W. Curtis Vice President-Engineering and Construction-Nuclear cc: R.M. Stark

Upgraded Meteorological System Primary Tower 60M MS, WD, MV, Td, Td Instrument Ke MS Wind Speed WD Wind Direction WV Mind Variability T Ambient Temperature IOM WS, LiD, WV, T, D Td Temperature Difference D .

Dewpoint P Precipitation Parameters Power Supply Normal dual source supply, fed Translator through an auto-transfer switch. The supply to the auto-transfer switch is from the start-up buses.

Transmitter Digitizer Backup UPS (instrumentation only)

MAG Tape Recorder hfet Tower Building Receiver KOF Plant Process Computer Strip Charts Control Room .