ML19318C391

Advises That Annual Usage Factor for two-unit Processing Using Unit 1 Drumming Station Is Increased to 30% Using Values for Expected Waste Vols in Updated FSAR Table 11.5-1. Basis for Determining Usage Factor Encl

ML19318C391
Person / Time
Site:	Farley
Issue date:	06/23/1980
From:	Clayton F ALABAMA POWER CO.
To:	Schwencer A Office of Nuclear Reactor Regulation
References
NUDOCS 8007010424
Download: ML19318C391 (3)

Text

. . Alabama Power Company 600 North 18th Stroet

, Poet Office Box 2641 Birmir ;; nam. Alabama 35291 Telephwie 205 323-5341 h k hbcc 'd;7,Mt, Alabama Power the sournem ewrc system June 23, 1980 Docket Nos. 50-364 Director of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Attention: Mr. A. Schwencer Gentlemen:

Joseph M. Farley Nuclear Plant-Unit No. 2 Radioactive Waste Dru= ming Station Our letter dated September 28, 1978 addressed several areas of NRC concern regarding the capability of the Farley Unit 1 drumming station to process and handle radioactive wasten from both units. Of particular interest was the system capacity. It waa previously explained in the subject letter that the annual waste for one unit can be processed zu appioximately 1100 system operating hours which corresponds to an annual usage factor for two-unit operation of 25% (2200 hours0.0255 days <br />0.611 hours <br />0.00364 weeks <br />8.371e-4 months <br />). The expected waste volumes used to calculate that value were contained in FSAR Eection 11.5.4 Since that time a survey was conducted on Unit 1 to determine the amount of solid wastes generated during the annual period of July,1978 through June, 1979. Based on the results of that survey, FSAR Table 11.5-1 was updated in Amendment 72 to reflect more realistically the amount of wastes expected to be generated. Consequently, the annual usage factor for two-unit processing using the Unit 1 drumming station is increased to 30% using the values listed in FSAR Table 11.5-1. Attached is a summary of the basis for determining the usage factor. Therefore, it can be concluded that the usage factor remains low enough to allow for maintenance and to secommodate for surges in waste production rate using the Unit 1 drumming station.

Finally, Section 11.5.4 of the FSAR will be corrected in Amendment 73, such that the test description is consistent with Table 11.5-1.

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. . a s U. S. Nuclear Regulatory Commission June 23, 1980 Page 2 4

Should you have any questions, please advise.-

Yours very truly, A ,n F. L. Clayton, Jr4 V RWS:de Attachment i

cc: Mr. R. A. Thomas Mr. O. F. Trowbridge i .

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ATTACHMENT. ,

ANTICIPATED SOLID WASTES TO BE DRUMMED PER YEAR PER UNIT Volume Reported Volume Reported Waste Type

• In Amendment 71 in Amendment 72 Spent Resins 500 drums 300 drums (2400FT3) (1200FT3)

Evaporator Bottoms 1800 drugs -

2125 drums (7200FT*) (8500FT)3 Chemical Drain 200 drums 750 drums Tank Effluents (800FT3) (3000FT3 )

Steam Generator Blowdown System 450 drums 450 drums Spent Resins (1800FT3) (1800FT3 )

r.~ w-TOTAL WASTES . i' TO BE PROCESSED 3050 drums 3625 drums BY UNIT .1 DRUMMING (12,200FT3) (14,500FT3)

STATION

\

• 30 gal / drum (4FT 3/ drum)

The multiplier used to determine the increase in the annual usage factor is calculated by taking the ratio of the total volume reported in Amendment 72 to the total volume '

reported in Amendment 71. ,

= 3 MULTIPLIER 3

= 1.2 [

Therefore the annual usage factor for two unit processing based on the volumes reported >

in Amendment ~72, is determined as follows:

1.2 X 25% = 30%

The Unit 1 druming station capacity cons? 'ared for this evaluation is 2.77 drums / hour. '

This value is conservative since maximum system capability is approximately 3.5 drums / hour. -

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