ML18023A396
| ML18023A396 | |
| Person / Time | |
|---|---|
| Site: | 07200009 |
| Issue date: | 12/20/2017 |
| From: | Ahrendts S US Dept of Energy, Idaho Operations Office |
| To: | Document Control Desk, Office of Nuclear Material Safety and Safeguards, Office of Nuclear Security and Incident Response |
| References | |
| EM-NRC-17-052 | |
| Download: ML18023A396 (2) | |
Text
Attn: Document Control Desk
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Department of Energy Idaho Operations Office 1955 Fremont A venue Idaho Falls, ID 83415 December 20, 2017 Director, Division of Security Operations Office of Nuclear Security and Incident Response U.S. Nuclear Regulatory Commission Washington, DC 20555-0001
SUBJECT:
Evaluation of Hydrogen Gas Sampling at the Fort Saint Vrain Independent Spent Fuel Storage Installation, Docket 72-0009, Materials License No. SNM-2504 (EM-NRC-17-052)
Dear Sir or Madam:
On May 23 and 24, 2017, the Department of Energy (DOE) attempted to complete Fuel Storage Container (FSC) hydrogen gas sampling as required by the Fort St. Vrain Safety Analysis Report (SAR) Chapter 9, Conduct of Operations, Section 9.8, Aging Management Program. DOE attempted to sample six FSCs and was successful sampling four FSCs. No appreciable Hydrogen buildup was encountered in any of the four successful sampling activities. Gas sampling of the FSCs from the remaining two vault modules was not performed due to potential tooling or alignment issues when attempting to access the FSC seal plugs.
The FSC seal plug issue has been entered into the Corrective Action Management System. DOE has evaluated options as provided in enclosure 1 for NRC review.
Although not related to any commitments associated with Materials License No. SNM-2504, enclosure 2 provides NRC with a discussion as to why it is reasonable to find measurable amounts of radioactivity in the FSC's hydrogen gas samples.
Please direct any questions to myself at (208) 526-8888 or Mr. *Steve Wahnschaffe at (208) 526-4993.
Sincerely, NS/tD8 jl)tvf 5 S 2.~
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Document Control Desk
Enclosure:
- 1. FSV Hydrogen Sampling, EDF-STI-17-01, Rev.l, December 13, 2017
- 2. Investigation of Measurable Radioactivity in Hydrogen Sampling Off-Gas, STI-NLF-RPT-038, December 2017 cc:
Bernie White, NRC Project Manager Eric Simpson, NRC Region IV Lee Brookhart, NRC Region IV David Bland, STI EM-NRC-17-052