ML20028D446
| ML20028D446 | |
| Person / Time | |
|---|---|
| Site: | Rancho Seco |
| Issue date: | 01/17/1983 |
| From: | Baxter T SHAW, PITTMAN, POTTS & TROWBRIDGE |
| To: | Office of Nuclear Reactor Regulation |
| References | |
| RTR-NUREG-0737, RTR-NUREG-737, TASK-2.F.2, TASK-TM NUDOCS 8301190131 | |
| Download: ML20028D446 (2) | |
Text
S SHAw, PITTMAN, PoTTs & TROWBRIDGE A PARTNERSHIP OF PROF ESSIONAL CORPORATsONS 1800 M STRE ET N. W.
WASHINGTON, D. C. 20036 (2021 822-1000 RAMSAY D POTTS. P C.
THOM AS A JAXTER. P C-JOHNH O'NEILL. JR MENNETH
.y. MAUTMAN PTEU ART L. PIT 7Mp N. P C.
JAMES M. SURGER. P C.
J AY A E PSTIE N DAVID LAWRENCE MILLER G "ORGE F. TROWSRsDGE, P C.
SHELDON J. WEISEL. P C.
RAND L ALLEN ANNE M MRAUSMOPF TEL ECOPiE R E.TE; HEN O POTTS. P C.
JOHN A McCULLOUGH. P C.
TIMOTHY B McBRIDE FREDERICM L. MLEIN CM ALD CH ARNOF F. P C J PATRaCM HICMEY. P C.
12O21 822-8099 & 822-9899 EUSABETH M. PENDLETCN GORDON R MANOFSM Y PHeL LIP D BOSTWICM P C.
GEORGE P MIC.HAELY. JR, P C PAUL A. MAPLAN JEFFREY S GI ANCOL A R TIMOTHY HANLON PC J THOM AS LE*sHART. P C.
MARRYH GLASSpl[ GEL H ANN AH E. M. LIEBERM AN C EORGE M ROGERS, JR. P C STEVE N L. ME LTZER. P C JEFFERY L. VABLON SANDRA E. FOLSOM E L EX JACM McMAY MARCIA R. NIRENSTEIN FK ED A LITTLE. P C DEAN D. AUUCM. P C.
JOHN 5 RHINE L ANDER. P C.
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CHAMLES S TEMMIN. P C.
SUSAN M FREUND EDWARD D. YOUNG. III LE!UE A NiCHOLSON JR. P C. STEPHE N 8 HUTTLER. P C CABLE "SHAWLAW" JOHN L. CARR. JR ROBERT L. WILLMORE RtCHARD J MENDALL. P C.
JAMESS H AMLLN. P C.
PHILIP J. HARVEY ANDREW D ELLt3 MawflN D FRALL. P C WINTHROP N BROWN. P C-ROBERT M GORDON WF NDEUN A. WHITE
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ROBERT E. ZAHL ER BONNIE S GOTTutB MRtSTI L. UMBO GEORGE V ALLE N. JR. P C.
RICH ARD E. GAL EN JOHN F. DEALY' HOWARDH SHAFFERMAN L ESuE M. SMITH DEBORAH S BAUSER VIRGINIA S. RUTLEDGE FLED DRASNER. P C.
RCSERTB ROBBINS COUNSEL R MENLY WESSTER P C.
STEVEN M LUCAS SCOTT A. ANENBERG MATHER1hE P CHEEM N1TH ANIEL P BRE ED. JR. P C.
DAvlO M RU B E N ST E I N CAMPBELL MILLEFER J ANICE LEHRER-STEIN M4CM AUGENGL4CM P C LYNN WHITTLESEY WILSON SETH H HOOGASI AN TRAVIS T BROW N. JR EE NE.sf L BL A88 E. JR. P C.
MATIAS F TRAVIESO-DIA2 SHEILA McC. HARVEY GAIL E. CURREY CM;L E TON S JON E S. P C VICTORsA J PE RMINS DEUSSA A RtDOWAY RICH ARD H M RON TH AL STEPHEN 8 HEIMANN 88eOY ADMITTED 8N D C.
WRITER S DIRECT DIAL NUMBER January 17, 1983 822-1090 Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Re:
Order for Modification of License (47 Fed. Reg. 57166):
Sacramento Municipal Utility District (Rancho Seco Nuclear Generating Station)
Docket No. 50-312
Dear Sir:
On December 22, 1982, the Nuclear Regulatory Commission published in the Federal Register an Ordar for Modification of License concerning the Rancho Seco Nuclear Generating Station.
The Order provided that licensee Sacramento Municipal Utility District may request a hearing with respect to the Order within 25 days of the date of its publication in the Federal Register (i.e.,
by January 17, 1983).
The Order would require that Licensee install an inadequate core cooling instrumentation system consisting of subcooling margin monitors, core-exit thermocouples and a reactor coolant inventory tracking system, all of which conform to the design parameters specified in NUREG-0737 Item II.F.2.
The Order also establishes timing requirements for the design, installation and operation of this system.
The Rancho Seco Nuclear Generating Station already includesg' 3 subcooling margin monitors and core exit thermocouples.
It will also have a reactor coolant inventory tracking system.
O 8301190131 830117 PDR ADOCK 05000312 P
PDR k
SHAw, PITTMAN, PoTTs & TROWBRIDGE A PARTNE RSMep OF PROFESS 80NAL CORPORADONS Director, Office of Nuclear Reactor Regulation January 17, 1983 Page Two This system will include a wide range hot leg level monitor to provide inventory tracking when reactor coolant pumps are not in operation.
To provide inventory tracking when reactor coolant pumps are on, Licensee will commit to install a reactor coolant pump monitor.
Although the Rancho Seco facility will have a reactor coolant inventory tracking system, that system will not include a reactor vessel head level monitor.
While such - monitor is not explicitly required by Section III of the Order
.ettion II of the Order states that differential pressure measurement techniques for reactor coolant inventory tracking are acceptable if they monitor the inventory over the range from the vessel upper head to the bottom of the hot leg as a minimum. The Rancho Seco system will not meet this criterion.
Because of the B&W once through steam generator design, a reactor vessel head monitor is neither required nor useful at Rancho Seco.
Licensee is sponsoring further analysis to confirm that a reactor vessel head monitor is not needed at Rancho Seco.
Licensee will submit the results of this analysis to the NRC for its review by April 15, 1983.
Licensee believes that it would be appropriate to await completion of this further analysis and the NRC's review before determining whether a hearing should be requested.
If the NRC Staff upon completion of its review takes the position that a reactor vessel head monitor is still required for Rancho Seco, Licensee respect-fully requests an extension of time within which to requ'est a hearing until 30 days after notification by the NRC Staff of that position.
t The Office of Executive Legal Director has indicated l
that it does not object to the requested extension.
If this request for extension is not granted, Licensee hereby requests a hearing on t.he Order.
l l
Sincerely,
^w Thomas A. Baxter Counsel for Licensee Sacramento Municipal Utility District cc:
Docketing and Service Section, Office of the Secretary Office of Executive Legal Director