L-77-379, Transmittal of Request to Amend Appendix a of Facility Operating Licenses

Transmittal of Request to Amend Appendix a of Facility Operating Licenses

ML18227D812
Person / Time
Site:	Turkey Point
Issue date:	12/15/1977
From:	Robert E. Uhrig Florida Power & Light Co
To:	Stello V Office of Nuclear Reactor Regulation
References
L-77-379
Download: ML18227D812 (10)

Text

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P ~ BOX 013100, MIAMI, FL 33101 PLQRIOA POWER 5 LIGHTCOMPANY December 15, 1977 L-77-379 Director of Nuclear Reactor Regulation Attention:

Mr. Victor Stello, Director Division of Operating Reactors U. S. Nuclear Regulatory Commission Washington, D. C.

20555

Dear Mr. Stello:

Re:

Turkey Point Units 3 and 4

Docket Nos.

50-250 and 50-251 Proposed Amendment to Facility Ooeratin Licenses

-DPR-31 and DPR-41 Zn accordance with 10 CFR 50.30, Florida Power 6 Light Company submits herewith three

{3) signed originals and forty {40) copies of a request to amend Appendix A of Facility Operating Licens s DPR-31 and DPR-41.

A recent review has shown an inconsistency between the maximum allowable pressurizer heatup rate specified by certain NSSS documents 'and the heatup rate allowed by the Turkey Point Tech-nical Specifications.

The Technical Specifications allow a pressurizer heatup rate of 200 'F in any one hour, whereas the correct maximum allowable pressurizer heatup rate is 100 'F/hr.

The maximum allowable pressurizer cooldown rate remains at.

200 'F in any one hour.

The correct heatup and cooldown rates for the pressurizer are based on information contained in the NSSS Design Transient Document and the Pressurizer Equipment Specifications.

The proposed amendmen is described below and shown on the accompanying Technical Spec&cation page bearing the date cf this letter in the lower right hand corner.

Pa e 3.1-2 The maximum allowable pressurizer neatup rate in Specification 3.1.2 is changed from "200 'F in any one hour" to "100 'F in any one hour".

The proposed amendment has been reviewed by the Turkey Poin" Plant Nuclear Safety Committee and the Florida Power

& Light Company Nuclear Review Board.

They have concluded that it does PEOPLE... SERVING PEOPLE

Director of Nuclear Rea r Regulation

'Page Two not involve an unreviewed safety question.

A written safety evaluation is attached.

This proposal is responsive to an October 13, 1977 letter from Nr. George Lear of your staff requesting that we submit a request to amend our Technical Specifications to provide a limit of 100'F/hour on the rate of pressurizer heatup.

CESAR Section 4.2.2, page 4.2-4 and FSAR Section 4.2.6, page 4.2-15 both state that the pressurizer and heaters are both sized for a 55'F/hour heatup rate.

Therefore, we conclude that a 100'F/hour pressurizer heatup rate has not been exceeded at Turkey Point Units 3 and 4.

Very truly yours, r...

Robert E. Uhrig Vice President REU/mS/lah Attachment cc:

Nr. James P. O'Reilly, Region II Robert Lowenstein, Esquire

2.

PRESSURE-TEMPERATURE LIMITS

't I

The Reactor Coolant System (except fo the pressurizer) pressure and temperature shall be limited during heatup, cooldown, criticality (except for low power physics tests),

and inservice leak and hydrostatic testing in accordance with the limit lines show.

on Figures 3.l-la through 3.1-lb.'llowable pressure-temperature combinations are BELON AND TO THE RIGHT of the lines on the Figures.

Heatup and cooldown rate limits are:

a.

A maximum. heatup rate of 100 'F in any one hour.

b.

A maximum cooldown rate of 100 'F in any one hou c.

A maximum temperatur derange of >

5 F in any one hour during hydros atic testing operation above system design pressure.

The pressurizer pressure and temperature shall be limited in accordance with the following:

d.

The pressurizer shall be limited to a maximum heatup rate of 100 F in any one hour, and a

maximum cooldown rate of 200 'F in any one hour.

e.

The pressurizer shall be'limited to a maximum Reactor Coolant System spray water temperature differential of 320 F.

With any of the above limits exceeded, restore the temperature and/or pressure within the limi s within 30 minutes; determine that the RCS or pressurizer remains acceptable for continued operations or, if at

power, be in at leas Hot Shutdown within the next 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> and Cold Shutdown within the following 30 hours3.472222e-4 days <br />0.00833 hours <br />4.960317e-5 weeks <br />1.1415e-5 months <br />.

The reactor shall not be made critical unless the moderator temperature coefficient is zero or negative.

When the coefficient is greater than zero, the reactor shall be subcritical by an amount ecpal o or greater than the potential reactivity insertion due to depressurization.

These moderator temperature coefficient conditions do not apply to low power physics tests.

3.1-2 12/>,f77

.SAFETY EVALUATION Re:

Turkey Point Units 3

4 Docket Nos.

50-250

& 50-251 Pressurizer Heatu Pate Introduction This evaluation supports a proposed change to Specification 3.1.2.d.

The maximum allowable pressurizer heatup rate is revised from "200 F in any one hour" to "100 F in any one hour Evaluation This proposed change is the result of a letter from our NSSS vendor advising us that the correct maximum allowable pressurizer'heatup

rate, based on information contained in the NSSS Design Transient Document and the Pressurizer Equipment Specifications, is 100 'F/hr.

This is conservative with respect to the current Technical Specification limit o.

200 'F in any one hour.

Functionally, no corrective action has been required because it is not possible to attain a pressurizer heatup rate of 100 'F/hr. during any normal evolution.

Administratively, licensed operators have been made aware of the correction, and this Technical Specification amendment is proposed as the final corrective action.

This occurrence was reported to the NRC as Reportable Occurrences 250-77-7 and 251-77-7 dated September 2,

3.977.

The two reports are basically identical.

RO 250-77-7 is attached for information.

III.

Conclusion Since the proposed amendment is administrat ve in nature and conforms to applicable design documents, (1) 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 technical specification, therefore, the change does not involve a significant hazards considera-.'on, (2) there is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposed

manner, and (3) such activities will be conducted in compliance with the Commission's regulations and the issuance of this amendment will not be inimical to the common de ense and security or to the health and safety of the public.

~ STATE OF FLORIDA

)

)

COUNTY OF DADE

)

Robert E. Uhrig, be'ng first duly swon.,

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-

'ents 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.

~,-~'8 7/R-Robert E. Uhrig Subsc ibed and sworn to before me this ciay oz 19~>

NOTARY PUBLIC, in and for the County of Dade, State of Florida

~~fy commission expires: