ML20106A624
| ML20106A624 | |
| Person / Time | |
|---|---|
| Site: | Byron, Braidwood, 05000000 |
| Issue date: | 02/06/1985 |
| From: | Tramm T COMMONWEALTH EDISON CO. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| 9734N, NUDOCS 8502110303 | |
| Download: ML20106A624 (3) | |
Text
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,FN Commonwealth Edison j one First Nationti Plum. Chicigo. Ilknois
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C ~ Addr:ss R2 ply to: Post Offica Box 767
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Chicago, Illinois 60690
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February 6, 1985
'Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington', DC 20555-
Subject:
Byron Generating Station Units 1 and 2 Braidwood Generating Station Units 1 and 2 Volume Reduction System NRC-Docket Nos. 50-454/455 and 50-456/457 Re'ference (a): -December 14, 1984 letter from B. J. Youngblood to D. L. Farrar.
Dear Mr.'Denton:
This letter provides the responses to NRC questions 321.100 and 321.~103 regarding-the Byron /Braidwood volume reduction systems.
'This information will be incorporated into the FSAR at the earliest opportunity.
.One signed original and fifteen copies of this letter and
=the enclosures are provided for NRC review.
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Very truly yours, f$a fN T. R. Tramm Nuclear Licensing Administrator 1m Enclosures RP,\\
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~321.100
- QlESTION
~ Provide a description of the procedure that will be used for controlling
-.theLquantity of halogenated plastics. incinerated in the dry waste
- processorLto the levels specified in AECC-2-P topical report. The
' response-to~ Question 321.75 is not adequate.
RESPONSE
. The _ amount of halogenated plastics fed to the dry waste processor will
'be limited through a containation of procurement controls and physical-sorting. The effectiveness of these measures will be verified through the use of process instrumentation which measures the pH of the scrub 111guor. Maintaining the proper pH will help assure a long life for the e
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-processor, components but it has no safety significance.
If these 1 controls prove to be inadequate additional actions will be taken. The dry waste processor will not be operated for any significant length of
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time.with a low pH in the scrub liquor.
The: procurement controls _ center upon chemical analysis of disposable-fitems stocked in the station storeroom which might be used in
. contaminated areas.and disposed in the drywaste processor. This includes-items'such as clothing,. shoe covers, tape, plastic bags,' wipes, mopheads, etc. A list'will be maintained which identifies all such
' materials which have been found to have acceptably low levels ofJ
.(halogenated plastics and those'which are high in halogenated plastics.
LTo the extent practical only items with acceptably low levels of halogenatedplasticswillbestocked.
Dry active uste (DAW) will be generally collected in bags for transport
-to the radwaste processing area. Wherever practical, halogenated
- plastics will. be bagged separately :st the point-of. collection for compaction and burial. Bags of. mixed DAW will' be opened and manually
? sorted before being put into the trash shredder. The storeroom's lists V
'or other unique. markings will_be used to identify items having Junacceptable' levels-of. halogenated. plastics. This sorting will be done-f-
?under the direction of the Radweste Foreman. The bags will be opened on
'a table under a ventilation hood. The personnel who do this work will wear masks and'will be specially 1 trained to identify the items which are 1
._to be compacted.- If significant cuantities of unidentifiable materials are found, they will be segregatec for further analysis and testing.
- It is not expected that this manual sorting will' involve significant occupational exposure. Radiation' detection instrumentation will be used-at the sorting table to identify DAW with significant activity so it can
.be given special handling.
-It is ' expected that this sorting' process will keep the level of
'halogenated plastic'in.the DAW feed at an acceptably low level.' The
' scrub liquor low pH alarm will let the operator know if these controls tare ineffective.
In such a case, the scrub liquor would be transferred
'back to the feed' tanks for pH. adjustment or the-feed streams would be adjusted to restore the pH to an acceptable value.
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- QESTION '321.103 -
The response to Question 321.76 states that the response to Question
'321.75 address the method for controlling the sulfur content in the dry active waste. However, the control of sulfur-containing wastes does not appear to be in that response. Provide a revised response to Question 321.76.--
RESPONSE-The-same procurement controls and DAW sorting process described in the response to Question 321.100 will be used to limit the amount of sulfur-containing wastes in the DAW fed to the dry waste processor.
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