L-76-377, Application for Proposed Amendment to License No. DPR-067. Proposed Change Concerns Revision to Table 3.3-5 (Engineered Safety Features Response Times), Item 1.e and 6

Application for Proposed Amendment to License No. DPR-067. Proposed Change Concerns Revision to Table 3.3-5 (Engineered Safety Features Response Times), Item 1.e and 6

ML18096B501
Person / Time
Site:	Saint Lucie
Issue date:	10/29/1976
From:	Robert E. Uhrig Florida Power & Light Co
To:	Stello V Office of Nuclear Reactor Regulation
References
L-76-377
Download: ML18096B501 (11)

Text

U.S. NUCLEAR REGUI.ATORV COM~ ION DOCKET NUMBER NRC FoRM 195 I2-78) 50- 33$

FILE NUMBER NRC DISTRIBUTION FoR PART 50 DOCKET MATERIAL" DATE OF DOCUMENT TO: Mr Stello Florida Pwr & Light Co 10-29-76 Miami, Fla R E Uhrig DATE RECEIVED 11-4-76 IILETTER CINOTORIZEO PROP INPUT FORM NUM8ER OF COPIES RECEIVED II ORIGINAL NUNCLASSIFIED lcc Qcopv T

DESCRIPTION ENCLOSURE Ltr trans the following: Request for Amdt to OL/Chagge to Tech Specs:

Consisting of revisions with regard to the feedwater isolation function.......

(40 cys encl rec'd) o Krrs ggMO~

PLANT NAME: St Lucie gl

.'OR ASST' SAFETY ACTION/INFORMATION 11-4-76 ehf ASSIGNED AD: ASS r.NF.D A ~

BRANCH CHIEF:

PROJECT MANAGER: P 0 LIC ~

INTERNAL D IST RI BUTION SYSTEMS SAFETY SITE A NRC PDR HEINEMAN ENV RO NA I & E SCHROEDER BENAROYA OELD GOSSICK & STAFF ENGINEERING IPPOLITO MIPC MACCARRY K RKW 0 CASE KNIGHT HANAUER SIINEIL OPERAT N REAC 0 S LE PAWLICKI PROJECT MANA EME REACTOR SAFE'IIY OPERA N BOYD ROSS EISENH P COLLINS NOVAK SHAO HOUSTON ROSZTOCZY BAER PETERSON CHECK BUTLER MELTZ R MES HELTEMES AT&I SKOVHOLT SALTZMAN RUTBERG EXTERNAL DISTRIBUTION CONTROL NUMBER LPDR: NAT LAB BROOKIIA F TIC: REG, VIE ULRIKSON ORNL ps.rc:

ASLB; LA'PDR CONSULTANTS I( I 5 ACRS CYS HQhl&QG EN NRC F OIIM IOfj I>. III)

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-g@QStI) ~ October 29, 1976 L-76-377 Director of Nuclear Reactor Regulation Attention: Mr. Victor Stello, Director Division of Operating Reactors U. S. Nuclear Regulatory Commission Nashington, D. C. 20555

Dear Mr. Stello:

Re: St. Lucie Unit. 1 Docket No. 50-335 Proposed Amendment to Facilit 0 crating License'PR-67 Zn accordance with 10 CFR 50.30, Florida Power & Light Company submits herewith 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 described below 'and is shown on the attached Technical Specification pages bearing'the date of this letter in the lower, right hand corner.

Pa es 3/4 3-16 and 3-17 V w s Table 3.3-5 (Engineered Safety Features Response Times),

items l.e and 6 are revised to include the feedwater isolation function. Also, item 8 is deleted.

The proposed amendment has been reviewed by the St. Lucie Plant Facility Review Group and the Florida Power 6 Light Company Nuclear Review Board. They have concluded that the proposal does not involve a significant. hazards consideration and, therefore, does not require prenoticing pursuant to 10 CFR 2.105. A written safety evaluation is attached.

Very truly yours, OCL'gtgII Robert E. Uhrig Nays Vice President pe II+@

co A+gg REU/MAS/cpc Attachment X9 985 cc: Mr. Norman C. Moseley Robert Lowenstein, Esquire PEOPLE... SERVING PEOPLE

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TABLE 3.3-5 ENGINEEREO SAFETY F=ATURES ."-. SPOVSE TINES INITIATING SIGNAL AND FUNCTIOll RESPONSE TI I'.E IH SECONDS

1. Ilanual

a. SIAS Safety Injection (ECCS) Not Applicable Containment Fan Coolers Not Applicable Feedwater Isolation Not Applicable

b. CSAS Containment Spray Not Applicable

c. CIS

, Containment Isolation Not Applicable Shield Building Ventila ion Syste~ Not Applicable

d. RAS -"

Con"air>: ..". Su...p P circ:.:,=-.io;: Not App; cable

e. NSIS Main Steam Isolation Not Applicable Peedwatet Isolati'on Not Applicable

2. Pressurizer Pressure-Los.

a. Safety Injection (ECCS} <30 0*'19 5+*

b. 'Containment Fan Coolers < 30.0"'/17.0**

c. Feedwater Isolation < 60.0

3. Containment Pressure-Hi h

a. Safety '.ni ction (ECCS) < 3Q Q*/19 5%*

b. Containr.-.ant I sol a ti on < 30.5*/20.5**

c. Shield Bu lding Ventilation S-ste.-., < 30.0*/14.0**

d. Contain.",:.=ni Fan Cool ers < 3Q 0*/1/ 0%*

e. Feeds,a ter Isolation < 60.0 ST. LUCIE - UNIT 1 3/4 3-16 10/29/76

TABLE 3.3-5 (Continued)

ENGINEERED SAFETY FEATURES RESPONSE TItlES INITIATING SIGllAL AND FUNCTION RESPONSE TItlE IN SECONDS

4. Containment Pressure--Hi h-Hi h

a. Containinent 'Spray < 30.0*/18.5**

5. Containment Radiation-Hi h

a. Containment Isolation < 30 5*/20 54*

b. =-

Shield Building ~lentilation System < 30.0~/14.0"*

6. Steam Generator Pressure-Lo~v

. a. Hain Steam Isolation <6.9

b. Feedwater Iso1ation <60.0

7. Refuelin )later Stora e Tank-Lofti

a. Containment Sump Recirculation < 91.5 TABLE NOTATION Diesel generator starting and sequence loading delays included.

• • Diesel generator starting and sequence loading delays not included.

Offsite pov:er available.

ST. LUCIE - UNIT 1 3/4 3-17 10/29/76

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SAFETY EVALUATION Introduction This safety evaluation supports a proposed change to the St.

Lucie Unit 1 Technical Specification Table 3..3-5 (Engineered Safety Features Response Times) such that items l.e and 6 may be revised to include the feedwater isolation function, and item 8 may be deleted.

Discussion As stated in Revision 57 (2/27/76) to the St. Lucie Unit 1 FSAR, normal feedwater flow to the steam generators is terminated in the event of a steam line break accident. by having the Main Steam Isolation System (MSIS) logic provide for feedwater isolation on low steam generator pressure. It is therefore appropriate to add the feedwater isolation function to items l.e and 6 of Table 3.3-5.

Since feedwater flow reduction to 5% has been replaced by feedwater isolation as a required safety feature, feedwater flow reduction is no longer necessary for any accident analysis and should not be included in the Technical Specifications.

Also, feedwater flow reduction is generated by a non-safety related system (Feedwater Regulating System).* Because of the above, item 8 of Table 3.3-5 should be deleted.

Conclusions Based on these considerations, (1) the proposed change does not increase the probability or. consequences of accidents or mal-functions of equipment important to safety and does not reduce the margin of safety as-defined in the basis for any technical specification, therefore, the change does not involve a significant hazards consideration, (2) there is reasonable assurance that the health'and, safety of the public will not be endangered by opera-

-tion in the proposed manner, and (3) such activities will be con-ducted in compliance with the Commission's regulations and the issuance of this amendment will not be inimical to the common defense and security or to the health and safety of the public.

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STATE OF FLORIDA )

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COUNTY OF DADE )

E. A. Adomat , being first duly sworn, deposes and says:

That he is Executive 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.

E. A. Adomat Subscribed and sworn to before me this day of

,,, TARY PUBLlC, in and or the County of Dade,

,<<~<", S+ ate of Florida NOTARY PLISLIC STATE OF FLORIDA AT LARCH'Y COMMISSION EXPIRES NOV. 30 I 979 BONDED THRU GENERAL INS. UNDERWRITERS.

1Q~ commission expires:

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