ML20040H276

Forwards Request for Addl Info Re Radwaste Vol Reduction Sys.Response Requested within 30 Days of Receipt of Ltr

ML20040H276
Person / Time
Site:	Byron
Issue date:	02/01/1982
From:	Youngblood B Office of Nuclear Reactor Regulation
To:	Delgeorge L COMMONWEALTH EDISON CO.
References
NUDOCS 8202180033
Download: ML20040H276 (10)

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Docket File'~1 FEB1 1982 LB#1 Readi'ng ic: REQ DEisenhut

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Docket flos.: STil 50-454 BJYoungblood

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($lC *[jp SChesnut CN BDoolittle SS(16 L p',e(N Hr. Louis 0. DelGeorge KKiper A

Director of fluclear Licensing SHanauer WGamm Comonwealth Edison Company RMattson JHayes Post Office Box 767 JKramer Chicago, Illinois 60690 RVollmer RHartfield, itPA

Dear fir. DelGeorge:

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Subject:

Request for Additional Information for Byron /Braidwood As a result of our review of the Byron /Braidwood FSAR, we have identified a need for additional information concerning the radwaste volume reduction system. The request for information is included as Enclosure 1, questions 321.15 to 321.43. Please respond to this request within 30 days of receipt of this letter. For further information or clarification, contact the Byron Project Manager, Steve Chesnut, (301) 492-7150.

Sincerely, Originni signca by:

]3, J. Younglood B. J. Youngblood, Chief Licensing Branch No. 1 Division of Licensing

Enclosure:

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r-Mr. Louis 0. DelGeorge Director of. Nuclear Licensing Commonwealth Edison Company -

4 Post Office 3ox-767 Chicago, Il'iinois '60690 cc: Mr. William Kortier Atomic Power Distribution Westinghouse Electric Corporation Post 0ffice Box 355 Pittsburgh, Pennsylvania 15230 Paul M. Murphy, Esq.

Isham, Lincoln & Beale One First National Plaza 42nd Floor Chicago, Illinois' 60603 C. Allen' Bock, Esq.

Post Office Box 342 Urbana, Illinois 61801 Thomas J.-Gordon, Esq.

Waaler, Evans & Gordon 2503 S. Neil Champaign, Illinois 61820 Ms. Bridget Little Rorem Appleseed Coordinator 117 North Linden Street Essex, Illinois. 60935 Mr. Edward R. Crass Nuclear Safeguards and Licensing Divistor Sargent & Lundy Engineers 55 East Monroe Street Chicago, Illinois 60603 Resident Inspector - Braidwood Nuclear Regulatory Commission, Region III 799 Roosevelt Road Glen Ellyn, Illinois' 60137 Mr. James G. Keppler.

U. S. NRC, Region III-799 Roosevelt Road Glen.Ellyn, Illinois 60137 1.

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Mr. Louis 0. De1 George Director of Nuclear Licensing Commonwealth Edison Company Post Office Box 767 Chicago, Illinois 60690 cc: Mr. William Kortier

' Mr. James G. Keppler Atomic Power Distribution U. S. NRC, Region III Westinghouse Electric Corporation 799 Roosevelt Road P. O. Box 355 Glen Ellyn, Illinois 60137 Pittsburgh, Pennsylvania 15230 Paul M. Murphy, Esq.

Isham, Lincoln & Beale One First National Plaza 42nd Floor Chicago, Illinois 60603 Mrs. Phillip B. Johnson 1907 Stratford Lane Rockford, Illinois 61107 Ms. Bridget Little Rorem Appleseed Coordinator 117 North Linden Street Essex, Illinois 60935 Dr. Bruce von Zellen Department of Biological Sciences Northern Illinois University DeKalb, Illinois 61107 Mr. Edward R. Crass Nuclear Safeguards and Licensing Division Sargent & Lundy Engineers 55 East Monroe Street Chicago, Illinois 60603 Myron Cherry, Esq.

Cherry, Flynn and Kanter 1 IBM Plaza, Suite 4501 Chicago, Illinois 60611 Mr. William Fourney l

U. S. Nuclear Regulatory Conmission Byron /Re ident inspectors Office 4448 German Church Road Byron, Illinois 61010 l

Ms. Diane Chavez 602 Oak Street, Apt. #4 Rockford, Illinois 61108 l

ENCLOSURE BYRON /BRAIDWOOD VOLUME REDUCTION SYSTEM QUESTIONS Q 321.0 Effluent Treatment System Branch 321 ~.15.

Describe and justify.all Byron /Braidwood VR system design details which differ from those described in AECC-2-P.

16.

Describe plant interfaces with the VR system and whether the interface requirements spelled out in AECC-2-P are satisfied.

If not, justify l

any exceptions.

17.

What will the feed rate be for evaporator concentrates for-the VR system l

for a 4% by weight basis acid concentrate? ' Topical Report AECC-2-P i

i only provides values for 25% and 20% weight solids but not 4% boric-1 acid solutions.

l 18.

Drawing 1190500 shows.liquidstream@goingtotheevaporator.

Describe this flow path in more detail, i.e., indicate which collection tank or i

other components may be used to store and/or process this liquid pr to evaporation and discuss the impact of this flow path 'on the liquid en luent 1

source term released from the plant.

19.

Drawing 1190500 does not show the contents of the scrubber preconcentrator i

sump being capable of pumping back to the evaporator feed tank or to the I

evaporator concentrates tank.

Drawing M-48-33'and M-48-34 show this liquid pumped to the waste liquor storage tank. The discrepancy in processing flow should be eliminated and the required processing flow rate indicated.:

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, 20.

Drawing 1190500 shows overflow of the condenser to the evaporator while drawing M-48 Sheet 34 shows overflow to the floor drain system.~ Again, this discrepancy should be eliminated and the correct flow path should be indicated on both drawings.

21.

The topical report shows the following equipment to have a capacity i-different from that in the Byron /Braidwood FSAR.

Explain the differences.

Topical FSAR Decon tank 650 gal 450 gal-Contaminated oil storage tank 300 gal 175 gal Waste feed pump 120 gph 58 gph Waste recirculation pump 500 gpm 10 gph Dryer feed pump 30 gph 24.8 gph Condensate pump 120 gpm 22 gpm Contaminated oil pump 12 gph 4.38 gph Scrubber preconcentrator recirculation pump 20 gpm 28 gpm Caustic additive pump 13 gpm 20 gpm Caustic tank 650 gal 1000 gal t

22.

How is the decontamination solution from the various sources treated?

Specify the flow rates associated with decontamination solution to each piece of equipment.

Describe how often each piece of equipment will be decontaminated.

If appropriate, include a discussion of the impacts of periodic decontaminat' ion on the liquid effluent source terms.

23.

No feed filter, as described in AECC-2-P, is shown in the Byron /Braidwood VR system drawings.

Explain this apparent discrepancy.

If this filter l

if included, identify where the backwash from this filter is routed.

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24. State whether the stations instrument air conforms to the requirements of Section 4.5.10 of the Aerojet Topical Report.

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25. Describe where the decontamination solution from the following equipment' n

is routed:

(1) scrubber preconcentrator (2) condenser i

(3) waste liquor storage tanks l

26. A secondary scrubber is not shown'in the generic design described by AECC-24. Discuss why this component has been included in-the Byron /

Braidwoad system. Also discuss that reason no decontamination capability i

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exists for the secondary scrubber, i

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27. Drawing M-48-33 shows flow from the waste feed filter to the waste l

liquor storage tank. Neither Drawing M-48-26 nor Drawing M-48-10 shows i

such a filter from the concentrates holding tank. Explain this apparent discrepancy and describe clearly the source of liquid waste-going to the waste liquor storage tank.

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28. Based upon a material balance around the dry waste processor, the amount l

f of air and water leaving the system in streamhof Drawing 1190500 does not p

balance with the input streams to the dry waste processor.

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, calculations show 1286 lbs air per hcur and 277.6 lbs H O per hour 2

should be present in stream 8, as opposed to the drawing value of 1306 lb/hr air and 339 lb/hr H 0.

Describe the dry waste processor 2

material balance in more detail so that such apparent discrepancies can be eliminated.

29. Explain why stream @, following filtration, has the same dust loading asstream@,priortofiltration, indrawing 1190500.

A H 0 balance around the entire process (VR) has input streams @, @,

30.

2 h, h, h, h, and h and output streams @ and h.

Based upon the values presented in Drawing 1190500, the input water amounts to 477.3 lb/hr, while the output stream amounts to 541 lbs/hr. Explain this discrepancy.

31. Based upon the liquid flow rates presented in Drawing 1190500, the flow rate of liquid from the waste liquor storage tanks is 58 gph to the venture scrubber.

Stream @ is overflow to the evaporator at a rate of 50.2 sph.

Since only 8 gallons are actually being volume reduced per hour, discuss the impact of this additional liquid load on your liquid radwaste system and the impact on the amount of time the VR system is anticipated to be operating.

32. From Figure M-48-34, locations D-3 and F-4, it appears that the gas stream from the scrubber preconcentrator splits with some of the gas

going to secondary scrubber and some to the gas heater. This flow path is not described in AECC-2-P. Provide flow details for this pathway.

s,uch as presented for the other streams in Drawing 1190500.

33. Since the two service air lines to the fluid bed dryer in Drawing M-48-35, location A-4, are the same size and at the same pressure, it would seem that the flow rate would be equal rather than different as indicated in Drawing 1190500. Explain why the flow rates differ,-if this is the case.

34. Based upon the fact that the VR system does not contain (1) two waste feed pumps (2) two scrubber preconcentrator recirculating pumps (3) two condensate pumps (4) two fluid bed dryer air blowers (5) two dryer feed pumps, and (6) two dry waste processor blowers, justify that the system will be operational a sufficient percentage of the time to process the amount of waste generated annually by the station in light of needed testing, maintenance and repairs on non-redundant components.

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35. Describe the floor drain system to which condenser overflow is routed and the flow rate.

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, 36. Identify the local floor drain to which liquid from the filter in Drawing M-48-34, location C-1, is routed.

Explain the purpose and design provisions of this filter which is not included in the generic design described in AECC-2-P.

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37. Why aren't there provisions to decontaminate the trash hopper?

38. Provide details of the polymer binder system in order that the system may be evaluated in accordance with SRP 11.4 and its interface with the solids from the fines hopper and product conveyed from the fluid bed l

processor.

39. Provide a description of the process and effluent sampling and monitoring ^

associated with the VR system.

40. Section 11.4 does not provide the amount of contaminated oil to be incinerated, the activity associated with this oil or the amount of ash generated as a result of its combustion.

Please provide this information.

41. Discuss the approximate amounts of PVC that will be incinerated each year in the dry waste processor, methods to be used to limit the amounts of PVC that will be incinerated, and the expected corrosion rates that will result from incineration of PVCS.

e which may

42. Incineration of materials such as rubber will produce S02

" poison" the charcoal adsorbers used for radioiodine removal from the gaseous exhaust stream.

Estimate the expected 50 concentrations in-2 n radioiodine the gaseous exhaust stream and the impact of the 502 removal efficiency of the charcoal.

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43. Beside flRC approval, identify any federal, state, or local agency approvals or permits that are necessary to operate the volume reduction system.

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