ML19247A766
| ML19247A766 | |
| Person / Time | |
|---|---|
| Site: | 07001201 |
| Issue date: | 07/02/1979 |
| From: | Ketzlach N NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| To: | NRC OFFICE OF NUCLEAR MATERIAL SAFETY & SAFEGUARDS (NMSS) |
| References | |
| NUDOCS 7908020280 | |
| Download: ML19247A766 (3) | |
Text
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Distribution:
FCPF r/f NMSS r/f M
2 $79 Docket 70-1201
[PDR IE HQ (2)
DOCKET T10.:
70-1201 Rtuunningham TFCarter, Jr.
APPLICAflT:
Babcock & Wilcox Company (B&W) fKetzach(2)
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FACILITY:
Corr:ercial fluelear Fuel Plant DWZeff, B&W Lynchburg, Virginia
SUBJECT:
REVIEW 0F LICErlSE A'1EflDf!EflT APPLICATI0:1 DATED OCTOBER 13, 1978, ITS REVISI0f1 DATED APRIL 30, 1979, AflD SUPPLEf1EflT DATED MAY 25, 1979 REVIEUER:
N. Ketzlach
_ Background Babcock & Wilcox Company, Commercial fluclear Fuel Plant (CflFP), by application dated October 13, 1978, requested authorization for the following:
1.
Store Sil!1 in a multi-tier array.
2.
Revision of surface contamination action levels in several facility areas (see discussion below).
D_iscussion A.
Muclear Criticality Safety A demonstration has been provided to justify the storage of SftM in any oxide for.3 in a four-uit high L-shaped linear array with a minimum of 28 inches center-to-center between stacks.
Independent KEi'0 calculations utilizing the 16 group nodified Hansen-Roach cross sections indicate the array has a keff = 0.9025 +.0050 when each container is filled with U(4)02 and water at optinum moderation within a unit.
Therefore, the requested storage array is safe.g,
B.
Radiation Safety L-7 7WNO92 d
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The applicant requested increases in contamination control action levels in several areas of his facility. The following is a table of the current action inunle wa th with thc FCPF staff.
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i Area Current _
Requested Controlled Removable a: 7500 dpm/100 cm2 5000 dpm/100 cm2 Total a: 25,000 cpn/60 cm2 50,000 dpn/50 cm2 Change Room Total a: 1000 cpn/60 cm2 2,000 dpn/50 cm2 Clean Removable a: 50 dpn/100 cm2 200 dpm/100 cm2 Total a: 100 cpr/60 cm2 500 dpa/50 cm2 The requested action levels for removable a contamination control in the controlled and clean areas are consistent with those in the propqsed Regulatory Guide 8.24, " Health Physics Surveys During Enriched Uranium-235 Processing and Fuel Fabrication", dated November 1978.
The requested action levels for total a contamination in the controlled area is 50,000 dpm/50 cm2 This level is comparable to that authorized I
at other lic sed facilities. The requested action levels for total a contaminatic.
the change roon and the clean areas are less than those in the "Guideli m for Decontanination of Facilities and Equipment Prior to Release for Unrestricted Use or Termination of Licenses for Byproduct, Source, or Special Nuclear Material", dated November 1976. The requested increas" in contamination level (from 1000 dpm/100 cn2 fixed a to 1000 dpr/50 cm2 total a) for the unrestricted use of tools and equipnent is within the NRC guidelines.
At the NRC request the renovable a contamination level in the lunch room and locker rooms will be kept as low as reasonably achievable compared to the current action level of 50 dpm/100 cm2 The survey frequency in the lunch room and locker rooms has been increased frem weekly to daily when is use. The surface contamination level and survey frequency are consistent with the ALARA concept.
/ The applicant has deleted fren Section 8.4.4.1 the level for the decontamination of hands by personnel leaving a controlled area in protective clothing for the performance of non-routine or special process operations. The present decontamination level is 500 dpm/75 cn2 The decontamination level will be replaced by levels as low as practicable applied to skin contamination control of personnel leaving any controlled area. This criterion is consistent with the ALARA concept.
At the NRC request, the applicant has reduced the allowable naximum a contamination level for the release of waste materials and equipment for unrestricted use from 25,000 dpm/100 cu2 (fixed a) to 7,500 dpn/ 50 cm2 (total a). This criterion is consistent with the HRC guidelines.
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Environmental _ Effects flo significant environmental effect should result from the authorizaticn of the new stcrage array or the requested changes in action levels for surface contamination control and survey frequency.
D.
General The amendment application, its revision and supplement were discussed with John B. Kahle, Region II (I&E) inspector of the ChfP on June 1, 1979. lie foresaw no safety or environmental related problem with the requested authorization.
E.
C_oncl_usion The nuclear criticality safety of the new SilM storage array has been established. The changes in the action levels for surface contamination control and the change in survey frequency era consistent with good radiation safety practices. Therefore, the requested changes are adequate to protect the health and safety of the operating personnel, the public, and the environnent.
Issuance of the license amendnent is recomended.
/s/ tl. Ketzlach lioman Ketzlach Uranium Fuel Fabrication Section
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Fuel Processing S Fabrication Branch Division of Fuel Cycle and Material Safety Approved by:
/s/ H. T. Crow W. T. Crow, Section Leader 06/25/79 Bin #22 & 23 FCPF FCPF
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