ML20086H654
| ML20086H654 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 02/14/1975 |
| From: | Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Anthony Giambusso Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML20086H657 | List: |
| References | |
| AO-75-11, AO-75-9, NUDOCS 8401190514 | |
| Download: ML20086H654 (3) | |
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h x%6 2iss e41-4ooo b : m N-c w Qi February 1h,1975 Mr. A. Giambusso Director Division of Reactor Licensing Offico of Nuclear Reactor Regulations United States Nuclear Regulatory Commission Washington, D.C.
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Dear Mr. Giambusso:
Sub,iect: Abnomal Occurrence The following occurrence was reported to Mr. Walt Baunack, Office of Inspection and Ihforement, Region 1, United States Nuclear Regulatory Camission on February 5,1973 Written notification was made to Mr. James P. O'Reilly, Office of Inspection and Enforement, Region 1, United States Nuclear Regulatory Cmmission on February 5, 1975 In accordance with Section 6 7 2.A of the Technical Specification Appendix A of DPR-hh and DPR-56 for Unit 2 and Unit 3 Peach Bottom Atmic Power Station, the following report is being submitted to the Directorate of Reactor Licensing as an Abnormal Occu:'rence:
Reference No.: License Number DPR-hh and DPR-56 Technical Specification Table h.8.1 Report No.:
50-277-75-11 and 50-278-75-9 Report Date:
February 1h,1975 Occurrence Date:
February h, 1975 Facility:
Peach Bettcm Atomic Power Station R.D.1, Delta, Pennsylvania 1731F
' Identification of Occurrence:
PrScedural deficiency resulted in a failure to obtain gamma scan data for the purpose of specific isotope identification on certain batches of liquid radioactive waste.
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Conditions Prior to Occurrence Unit 2 in comdercial operation. Unit 3 operating in accortlance j
l vith the Startup Test Program.
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Mr. A. Giambusto Fbrutry1h,le O
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Description of Occurrence:
In accumulating data for. seni-annual reporting purposes, it was noted that seventeen batches of radioactive waste release to the river had not been analyzed for the purpose of identifying specific isotopes.
These releases were annlyzed for gross beta activity. All releases were within A.E.C. release limits 4
Designation of Apparent Cause of Occurrmce:
' A procedural deficiency pemitted the radwaste release to be made based on the gross beta activity. Samples of the release were held for ihrther analysis. In these seventeen inctances, such analyses were not completed prior to disposal of the samples, or the' data accumulated as a result of such analyses was lost.
Analysis of Occurrence:
Each of the subject releases was analyzed for gross beta-gamraa activity using an internal proportional counter. Each release was per-formed with adequate main condenser circulation pump flow so that the m=i== specific activity for the releases listed after dilution was 4
less than h.5N9 Ci/ml.
(No credit being applied for further dilution within the discharge canal before the final point of release to Conowingo Pond).
'Ihe' total gross activity involved in these releases amounted to less than 0.013 curies. This quantity represents less than 17% of the total yearly release for 197h.
Based on yscan data obtained from releases made shortly before and after the subjeg releases, the have been 71 gay Co,15 hour1.736111e-4 days <br />0.00417 hours <br />2.480159e-5 weeks <br />5.7075e-6 months <br /> Na h, principal isotopes ecpected g0 and ould 2
27.8 day Crbl, 5.26 year Co 26.5 hour5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> As7 in decreasing order of abundance.
This assiassment clearly indicates that the missions of Y scan data on several releases out of a total of 62h for 197h'did not create a hazarti to the public.
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Corrective Action:
i An immediate amo was prepared and distributed to shift superw l
vision reasserting to the the requiramt foryscans prior to making liquid radwaste releases. The related procedure HPC/CO-18 was revised i
and approved as Revision 2 dated February h,1975 to clarify and in-corporate where lacking specific instructions cancerning the require-ment for gamma scans as,well as gross beta analyses on each batch before 1:
release.
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Febmary 1h,1975 Pags 3 O
o Failure Data:
None previous.
Very tmly yours,
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M. J. Cooney Ass 8t Gen'l Superintenderit Generation Division cc: Mr. J. P. O'Reilly Director Office of Inspection and Enfomement Region 1 United States Nuclear Regulatory Canission
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