ML17208A316
| ML17208A316 | |
| Person / Time | |
|---|---|
| Site: | Saint Lucie  |
| Issue date: | 03/17/1980 |
| From: | Urhrig R FLORIDA POWER & LIGHT CO. |
| To: | Eisenht D Office of Nuclear Reactor Regulation |
| References | |
| L-80-85, NUDOCS 8003200390 | |
| Download: ML17208A316 (9) | |
Text
RKGUL'ATORY IN MATION DISTRIBUTION SYST (RIDS)
ACCESSION NBR:8003200390 DOC ~ DATEo 80/03/17 NOTARIZED: YES FACIL;50>>335 St ~ Lucie Planti Unit 1r Florida Power 8 Light Co.
AUTH'AME
,AUTHOR AFFII.IATION URHRIGrR,E.
Florida Power ff Light Co.
REC IP ~ NAME RECIPIENT AFFILIATION EISENHTiD ~ Gs Division of Operating Reactors DOCKET 05000335
SUBJECT:
For wards response to NRC 800223 1tr r e LHR primary coolant sys pressur e isolation valves,Intr umentation, is provided to monitor pressure of low pressure side of Check Valves V>>3217gV 3227rV 3237 8
V 3247 ~ Flow diagram encl
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DISTRIBUTION CODE:
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.COPIES RECEIVED'LTR g ENCL SIZE!
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TITLE: General Distribution for after Issuance of Operating Lic RECIPIENT ID CODE/NAME ACTION:
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17 ENGR BR 19 PLANT SYS BR 21 KFLT TRT SYS OELD EXTERNAl: 03 LPDR 23 ACRS COPIES LiTTR ENCL 7
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FLORIDA POWER 4 LIGHTCOMPANY March 17, 1980 L-80-85 Office of Nuclear Reactor Regulation Attention:
Mr. Darrell G. Eisenhut, Acting Director Division of Operating Reactors U.
S. Nuclear Regulatory Commission Washington, D.
C.
20555
Dear Mr. Eisenhut:
Re:
ST.
LUCIE UNIT 1 DOCKET NO. 50-335 RCS PRESSURE ISOLATION The attached information is submitted in response to your letter of February 23, 1980 on the subject of LWR primary coolant system pressure isolation valves.
Very truly yours, Robert E., Uhrig Vice President Advanced Systems
& Technology REU/MAS/GG/VTC/pa Attachment cc:
J.
P. 0,',Reilly, Region II Harold Reis, Esquire
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ATTACHMENT Re:
ST.
LUCIE UNIT 1 DOCKET NO.
50-335 RCS PRESSURE ISOLATION NRC REQUEST 1
Describe the valve configuration at your plant and indicate if an Event V isolation valve configuration exists"within the Class I boundary of the high pressure piping connecting PCS (Primary Coolant System) piping to low pressure system piping; e.g.,
(1) two check valves in series, or (2) two check valves in series with a MOV.
RESPONSE
t Attached is a simplified flow diagram showing the isolation
-valve configurations identified as Event; V arranqements for St. Lucie Unit 1.
NRC REQUEST 2
If " either of the above Event V configurations exist at your facility, indicate whether continuous surveillance or periodic tests are being accomplished on such valves to ensure integrity.
Also indicate whether valves have been known, or found, to lack integrity.
FPL RESPONSE Instrumentation is provided to monitor the pressure on the low pressure side of check valve nos
~ V-3217, V-3227, V-3237, s V-3247.
An "alarm is received in the Control Boom when the pressure upstream of the check valves exceeds the alarm set point.
No other surveillance tests to assess the integrity of the other check valves identified as Event V arrangements are currently being performed.
Review of St. Lucie Unit 1 operating records has not shown problems with the subject check valves.
NRC REQUEST 3
If either of the above Event V configurations exist at your-facility, indicate whether plant procedures should be revised or if plant modifications should be made to increase reliability.
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FPL RESPONSE Procedures will be reviewed and revised as required to provide for continuous monitoring on the low pressure side of check valve nos.
V-3217, V-3227, V-3237, and V-3247 using the installed instrumentation.
Procedures will be revised during the current. refueling out-age to provide for periodic surveillance test'ng for check valve nos.:
V-3113 a V-3114 V-3l23
& V-3124 U-3133 6 V-3134 V-3143 6 V-3144 The tests will be performed to assess check valve integrity following cold shutdown or refueling shutdown.
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STATE OFFLORIDA
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Robert E. Uhrig, being first duly sworn, deposes and says:
That he is a Vice President of Florida Power 6 Light Company, the Licensee herein; That he has executed the foregoing document; that the state-ments made in this said document. are true,and correct to the best of his knowledge, information, and belief, and that he is authorized to execute the document on behalf of said Licensee.
Robert E. Uhrig Subscribed and sworn to before me this l7 day of 19 PQ NOTARY PUBLIC, 'nd for the county of Dade, State of Florida Watery Public, State ot Fhrida at Large L'.y Commise!on ilxpiros Octo>~r ".0, =1933 Ny COmmiSSiOn eXpireS
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