ML18127B149

Response to Letter of 8/10/1976, Submits Answers to Beach Survey

ML18127B149
Person / Time
Site:	Saint Lucie
Issue date:	10/11/1976
From:	Robert E. Uhrig Florida Power & Light Co
To:	Ziemann D Office of Nuclear Reactor Regulation
References
Download: ML18127B149 (12)

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t P. O. BOX 013100, MIAMI, FL 33101 i'd% iver FLORIDA POWER & LIGHTCOMPANY October 11, 1976 L-76-355 Office of Nuclear Reactor Regulation Attn:

Dennis L. Ziemann, Chief Operating Reactors Branch ¹2 Division of Operating Reactors U.

S. Nuclear Regulatory Commission Washington, D.

C.

20555

Dear Mr. Ziemann:

Re:

St. Lucie Unit 1 Beach Survey Docket No.

50-335 Su lementar Information lit'egIIieiory Docket,File (OI Pl

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CD Q.

In response to your letter of August 10, 1976, Florida Power 8 Light Company submits the following answers to your inquiries:

gllEETIEN Nl ANSWER:

EIIEETIEN NEI':-

ANSWER:

Identify the water contour shown.

(Is the contour at mean high water?)

The water contour shown is the water's edge at the time of the survey.

Future s'urveys will be made to the mean high water level of the ocean.

Identify the location of the section of beach shown.

Show the location of the plant intake and discharge channels and other plant features for the purpose of locating the survey.

Attached are Figures 1 and 2 which locate the beach survey with respect to plant features.

ENNNTINN NN ANSWER:

Draw the figure to scale, with dimensions shown, to enable comparisons with the FSAR description and with subsequent surveys.

Figures 1 and 2 are',drawn to scales of 1" = 600'nd

.. 1" ='400'espectively.'w'o figures'ere required to pro-vide clarity and to cover the large a'rea'f the survey.

Table 1 is provided to ensure-a legible format for the dis-tances from the center of the Old Beach Dune Road to the water contour.

Continued.....

~9300 PEOPLE... SERVING PEOPLE

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To:

Dennis L. Ziemann Re:

St. Lucie Unit 1 Beach Survey October ll, 1976 Page sIIESTIDII14-S y

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it p te et p bi'liy I'he dunes to meet Specification 5. 1.3.

ANSWER:

Technical Specification 5.1.3 refers to St. Lucie Unit 1 FSAR Section 2.4.2.2, Flood Design Considerations.

The dune description provided therein is as follows:

Width at crest elevation:

Crest evelation (MLW ocean):

IJidth at elevation of Old Beach Dune Road:

On the order of 5o 14'0'o 50'he survey conducted on June 7, 1976, showed the following:

Widthat'crest elevation:

AVERAGE MAXIMUM MINIMUM

~0 33 12 Crest elevation (MLW ocean):

15.2'7.4'1.4'87'idth at elevation of Old Beach Dune Road:

104'7'.

Since the parameters of the dune are greater than, or within the range of, the description in the

FSAR, and since the added height and width of the dune should improve the hurricane flood protection provided, we conclude that the dune is accep-table according to the criteria referenced in Specification 5.1.3.

Your letter also requested information concerning the photographic survey of the mangrove area required by Technical Specification 4.7.6.1.2.

Bids are currently being received from outside contractors for this work.

The photography should be completed in November, with future photography planned to coincide as nearly as practicable with the June beach dune survey.

In all

cases, the photographs will be evaluated for evidence of deterioration, then both the photographs and the evaluation will be submitted to the St. Lucie Plant Manager for inclusion in the annual operating report.

Yours very truly, Robert E. Uhrig

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Vice President REU/NLR/hlc Enclosures cc:

Norman C. Moseley, Region II Jack R.

Newman, Esq.

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FIGURE 2 FLORlDA POWER'I! LlGHT<OIIPPNy 1

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TABLE 1 ST.

LUCIE BEACH DUNE SURVEY

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.-~'ate of Survey:

June 7, 1976 Surve Line Reference Number 76 77 78 79 80 80-A 80-B 81.

81-A 81-B 82 82-A 82-B 83 84 85 86 87 88 Distance (in feet) from center of Old Beach Dune Road to Water's Ed e

135 120 154 142 144 148 239 179 184 180 167 161 155 142 83 107 60 61

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