ML22101A077
| ML22101A077 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 04/07/2022 |
| From: | Van Noordennen G TMI-2 Solutions |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| TMl2-RA-COR-2022-0008 | |
| Download: ML22101A077 (3) | |
Text
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TMl-2 SOLUTIONS April 7, 2022 TMl2-RA-COR-2022-0008 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 10 CFR 50.90
Subject:
Supplemental Information to License Amendment Request-Three Mile Island, Unit 2, Decommissioning Technical Specifications Three Mile Island, Unit 2 NRC Possession Only License No. DPR-73 NRC Docket No. 50-320
Reference:
(1) Letter TMl2-RA-COR-2022-0001 from G. P. van Noordennen (TMl-2 Solutions)
"Supplemental Information to License Amendment Request-Three Mile Island, Unit 2, Decommissioning Technical Specifications," dated January 5, 2022 (ML22010A066).
Attached as previously discussed with the NRC Staff is a revision to the Safe Fuel Mass Limit (SFML) calculation submitted via Reference 1.
This revision was required based on the discovery of the following minor errors in Reference 1 :
- 1. The impurity Eu-154 (ZAID 63154) was entered incorrectly in the MCNP input as 64154, which is the impurity Gd-154. Both have similar values, ranging 10E-8 to 1 0E-9, with an expected small resultant effect. As expected, the calculation shows the result to be within 0.05% of the original result (i.e. original Kett of 0.93617 vs. new result Kett of 0.93664); both results are substantially sub-critical.
The revised result is well within the calculational biases and subcritical limits of the original calculation.
- 2. Section 5.4.4 incorrectly noted the iron percentage as 1.51 wt.% after accounting for 90% credit. 1.51.wt. % represents 100% credit for iron and the text should have read 1.355 Wt.%. However, the input files for the calculation were correct and the error had no effect on the result. The report has been corrected to reflect the proper wt.% credit for iron.
TMl2-RA-COR-2022-0008 Page 2 of 2
- 3. The equation shown in 5.3.2 was corrected to remove the term 8 Mix3
- This Impwf equation was identified as an incorrect representation of the underlying calculation during reviews following the identification of the material composition error discussed above. Removing this term was an editorial change and did not affect the results of the calculation.
The discovery of these errors was entered into the TMl-2 Corrective Action Program.
In accordance with 10 CFR 50.91 (b)(1 ), a copy of this submittal has been sent to the Commonwealth of Pennsylvania.
In the event that the NRC has any questions with respect to the content of this document or wishes to obtain any additional information, please contact me at 860-462-9707.
There are no Regulatory Commitments contained in this letter I declare under penalty of perjury that the foregoing is true and correct. Executed on April 7, 2022.
Sincerely, Gerard van Noordennen Gerard van Noordennen
.-; Digitally signed by Gerard van Noordennen
,* DN: cn=Gerard van Noordennen, o=EnergySolutions,
- ', pu=Regulatory Affairs,
--eri\\ail,=gpvannoordennen@energysolutions.com, c=US
/
Date: 2022.04.07 13:39:31 -04'00' Senior Vice President Regulatory Affairs Attachments: - TMl2-EN-RPT-0001 "Determination of the Safe Fuel Mass Limit for Decommissioning TMl-2, Revision 1 cc w/
Attachment:
Amy Snyder, NRC Project Manager NRC Region I Administrator NRC Lead Inspector
TMl-2 Service List cc w/ Attachments:
Ken Robuck President and CEO Energy Solutions 299 South Main Street, Suite 1700 Salt Lake City, UT 84111 John Sauger President and Chief Nuclear Officer Reactor D&D Energy Solutions 121 W. Trade Street, Suite 2700 Charlotte, NC 28202 Mike Lackey Senior Vice President D&D Operations Energy Solutions 121 W. Trade Street, Suite 2700 Charlotte, NC 28202 Gerard van Noordennen Senior Vice President Regulatory Affairs Energy Solutions 121 W. Trade Street, Suite 2700 Charlotte, NC 28202 Frank Helin Project Executive TMl-2 Solutions 121 W. Trade Street, Suite 2700 Charlotte, NC 28202 Russ Workman General Counsel Energy Solutions 299 South Main Street, Suite 1700 Salt Lake City, UT 84111 Daniel F. Stenger Hogan Lovells US LLP 555 13th St NW Washinaton, D.C. 20004 Director, Bureau of Radiation Protection Department of Environmental Protectio~
Commonwealth of Pennsylvania Rachael Carson State Office BLDG.
13TH Floor P.O. Box 8469 Harrisburg, PA 17105-8469 Chief, Division of Nuclear Safety, Bureau of Radiation Protection Department of Enviro~mental Protection Commonwealth of Pennsylvania Rachael Carson State Office BLDG.
13TH Floor P.O. BOX 8469 Harrisburg, PA 17105-8469 Chairman, Board of County Commissioners, Dauphin County 112 Market Street 71h Floor Harrisburg, PA 17101 Chairman, Board of Supervisors of Londonderry Township 783 S. Geyers Church Rd.
Middletown PA 17057 Trevor Orth Site Decommissioning Director Three Mile Island Generating Station Route 441 South Middletown, PA 17057 Craig W Smith Site Decommissioning Regulatory Assurance Lead Three Mile Island Generating Station Route 441 South Middletown, PA 17057