ML17206A527

Forwards Proposed Amend to Append a of Facil Oper Lic #DPR-67 to Support Extension of Safety Injection Tanks' Sample Line to Reactor Auxiliary Sample Room During April 1979 Refueling

ML17206A527
Person / Time
Site:	Saint Lucie
Issue date:	11/16/1978
From:	Robert E. Uhrig FLORIDA POWER & LIGHT CO.
To:	Stello V Office of Nuclear Reactor Regulation
References
NUDOCS 7811240209
Download: ML17206A527 (10)

Text

P. O. BOX 013100, MIAMI, FL 33101 gyral/gg

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FLORIDA POWER 8( LIGHT COMPANY November 16, 1978 L-78-366 Office of Nuclear Reactor Regulation Attn: Mr. Victor Stello, Director Division of Operating Reactors U. S. Nuclear Regulatory Commission Washington, D. C. 20555

Dear Mr. Stello:

Re: St. Lucie Unit No. 1 Docket No. 50-335 Proposed Amendment to Facility Operating License DPR-67 ln accordance with 10 CFR 50.30, Florida Power 6 Light Company herewith submits .three (3) signed originals and forty (40) copies of a request to amend Appendix A of Facility Operating License DPR-67.

The proposed amendment is being submitted to support the extension of the safety in"'ection tanks'ample line to the reactor auxiliary building, sample room during, the April 1979 refueling. The'elocation of the sampling point to an area outside of the reactor containment',,building will reduce the personnel radiation exposures associated with contain-ment entries. The proposed amendment is shown on the attached Technical Specification pages bearing the date of this letter in the lower right. hand corner.

Pa e 3/4 6-5 The two proposed containment isolation valves are added to Table 3.6-1, Containment Leakage Paths.

Pa~e 3/4 6-22 The two proposed containment isolation valves are added to Table 3.6-2, Containment Xsolation Valves.

A written safety evaluation i: attached. FPL has determined that this is a Class XXX amendment in accordance with 10CFR 170.22. A check in the amount of >4,000 is enclosed.

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Mr. Victor Stello The proposed amendment-has been reviewed by the St. Lucie Plant Facility Review Group and the Florida Power and Light Company Nuclear Review Board. They have determined that the proposed change does not involve an unreviewed safety question.

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truly, Robert E. Uhrig Vice President Advanced Systems 6 Technology REU/WAK/dep Enclosures cc: Mr. James P. O'Reilly, Region XI Harold F. Reis, Esquire

TABLE 3.6-1 CONTAINMENT LEAKAGE PATHS Location Test Penetration ~Ss tern Valve Ta Number to Containment Service e*

7 Makeup ttater =

Gate (I-MY-15-1) Outside . Primary Hakeup Mater Bypass Check ( I-V-15-1347) Inside Station Air Globe (I-Y-18-947 Outside -

Station Air Supply Bypass Globe I-V-10-947 Outside,. Y Instrument Air Gate (I-MV-10-1) Outside Instrument Air Supply Bypass Check (I-V-10-957) Inside I'0 Containment Butterfly (I-FCY-25-4) Inside Containment Purge Type C Purge -. Butterfly I-FCV-25-5) Outside Exhaust Containment Butte) fly (I-FCV-25-3) Inside Containment Purge Purge, Butterfly I-FCV-25 2) Outside Supply Haste Globe (Y-6741) Outside Nitrogen supply to Bypass Management Check (V-6779) Outside SI Tanks 23 'Component Butter fly (I-HCV-14-7) Outside RC Pump CH supply Bypass Cooling Butterfly (X-HCY-14-.1 ) Outside Component Butterfly (I-HCV-14-6) .

Outside . RC Pump CH Return Dypass Cooling Butterfly (I-HCV-14-2) Outside

,25 Fuel Transfer Blind Flange Inside Fuel Transfer Bypass Tube .

26 CVCS Globe (Y-2515} Inside .'. Letdown Line Bypass Glob'e (Y-2516) Inside 28 Sampling Globe (Y-5200) Outside ~

Reactor Coolant Bypass Globe (Y-6203) Outside Sample Globe(l-FCV-03-1E) Outside SI Tank Sample Bypass Globe(X-FCV-03-1F) Outside

TABLE 3.6-2 Continued Penetration Testable Ouring Isolation I Valve Ta Number Number Function Plant 0 eration Time Sec C:

n m 10.. I-FCV-26-1 8, 2 52a Radiation monitoring Yes 11; I-FCV-26-3-E 4 52b Radiation monitoring Yes

12. I-FCV-26-'5 Ec 6 , 52c Radiation monitoring, return Yes 13- I-V00140(1325) 52d ILRT test tap Yes I-V00143(1325)

14. I-V00139(1322) 52e ILRT test tap Yes I-V00144(1322)

15. I-V00101(612) ILRT pressure connection Yes Yes HA *~

y-pCv-03-IE 6 D 28 SI Tank Sample HA --Manual Va ve-Isolation time not applicable.

• Hay be opened on an intermittent basis under administrative control.

• ~ Normally closed valves - Isolation time not applicable.

TABLE 3.6-2 Continued Penetration Testable During Isolation Valve Ta Number Number Function ~P1 0 0 t.i li S

10. I-FCV-26-1 5 2 52a Radiation monitoring Yes ll'. I-FCV-26-3 5 4 52b Radiation monitoring. Yes

12. I-FCY-26-'5 8 6 . 52c Radiation nionitoring, return Yes

13. I-V00140(1325) 52d ILRT test tap Yes I-V00143(1325) r

14. I-V00139(1322 52e ILRT test tap Yes HA I-V00144(1322)

15. I-Y00101(612) ILRT pressure connection D'8 54 Yes Ng A~c Yes l6. T.-PCV-03-IE & SI Tank Sample HA -. Manual Yalve-Isolation time not applicable.

• Hay be opened on an intermittent basis under administrative control.

• ~ Hormally closed valves - Isolation time not applicable,

RE: ST. LUCXE UNIT 1 l

DOCKET NO. 50-335 SAPLING VALVES SAFETY EVALUATION INTRODUCTION Sampling of the safety injection tanks (SXT) solution is required to meet the SURVEILLANCE REQUXREtKNT of Technical Specification

'4.5.1.6. The sample tubing from each SIT presently terminates at a sample sink inside the reactor containment building. To reduce the manhours and personnel radiation exposures associated with contain-ment entries, we plan to extend the SIT sampling lines to the pri-mary sampling room in the reactor auxiliary building. This proposed change, shown in the attached sketch, involves the installation of two (2) containment isolation valves at containment penetration number 28. This evaluation supports the addition of these two pro-posed, containment isolation valves to Tables 3.6-1'nd 3.6-2 of the St. Lucie Unit 1 Technical Specifications.

XI. EVALUATXON The proposed change is designed as Quality Group B, Seismic Class I and is consistent with the design criteria used in existing systems.

The electrically operated containment. isolation valyes vill be nor-mally closed, fail closed, and will receive a containment isolation signal (CXS) to close. The CXS will override a manual attempt in the sample room to open these valves.

No single failure of the proposed system would jeopardize plant .

safety. A tube failure inside containment would be detected by a low level indication for one safety injection tank and/or increased flow rate to sump. The leakage rate would be .less than 1.5 gpm, allowing sufficient'ime for operator action in accordance with the Technical Specifications. The single active failure of one contain-ment isolationvalve would be inconsequential and would not cause a leakage path since the other valve would be op'erable.

change involves small diameter (3/8 inch) tubing and valves.

'his A spare containment tubing penetration will be used.

The proposed two new containment isolation valves vill receive local leak'ate testing .in accordance with Technical Specification 4.6.1.2..

Operability of these valves will be demons'trated by the SURVEILLANCE REQUXRE1KNTS of Technical Specification 4.6.3.1.1.

III. CONCLUSXONS Routing the SXT sample tubing to the sample xoom will reduce uanhours and personnel exposure associated with SXT sampling.

The proposed change does not increase the probability or consequences of accidents or malfunctions of equipment important to safety and does not reduce the margin of safety as defined in the basis for any Techni-cal Specification. This change does not involve a significant hazard consideration and there is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposed manner.

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STATE OF FLORXDA )

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COUNTY OF DADE )

Robert E. Uhrig, being first duly sworn, deposes and says:

That he is a Vice President of Florida Power & 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 day of )

NOTARY PUBLXC, i State of Florida nd for the county of Dade, rVS!.!C OTAL Ot Ft.OttlOA t',t tAMS NOTA' MY COl<9YSS1Ctl = Ei".P!11M O'ABC'7, t~

Ny commission expires:

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