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Independent regulatory commissions

Indiana Michigan Power Company Commits to Seismic Probabilistic Risk Assessment

Strategic Insights

— 1 min read

Indiana Michigan Power Company, the licensee of the Donald C. Cook Nuclear Plant, has submitted a seismic probabilistic risk assessment as part of its regulatory commitments. The assessment was prompted by the Near Term Task Force Recommendation 2.1: Seismic. The company has committed to providing backup power to the containment distributed ignition system in the event of a loss of offsite power, which will reduce the seismic large early release frequency.

Key Takeaways:

  • The Indiana Michigan Power Company submitted a seismic probabilistic risk assessment for the Donald C. Cook Nuclear Plant Units 1 and 2 in response to the Near Term Task Force Recommendation 2.1: Seismic.
  • The assessment showed that providing backup power to the containment distributed ignition system could significantly reduce the seismic large early release frequency.
  • The company has committed to implementing a plant modification to provide power to the DIS in the event of loss of offsite power.
  • The commitment will be completed by September 9, 2022.
  • The affirmation statement and regulatory commitment are documented in Enclosures 1 and 2 to the letter, respectively.

Statistics:

  • 50.54(f) is the relevant section of the 10CFR regulatory code.
  • 2.1 is the recommendation from the Near Term Task Force that prompted the seismic probabilistic risk assessment.
  • The assessment was submitted on November 4, 2019, under ADAMS Accession number ML 19310D805.
  • The commitment will be completed within 3 years from the date of the assessment submission.
  • The Donald C. Cook Nuclear Plant is located in Cook Nuclear Plant, One Cook Place, Bridgman, MI 49106.

Sources:

  • Letter from Q. Shane Lies (Indiana Michigan Power Company) to U.S. Nuclear Regulatory Commission Document Control Desk, "Donald C. Cook Nuclear Plant Units 1 and 2 Seismic Probability Risk Assessment in Response to Near Term Task Force Recommendation 2.1: Seismic," Dated November 4, 2019, ADAMS Accession number ML 19310D805.
  • AEP-NRC-2020-52, Submission to the U.S. Nuclear Regulatory Commission, dated July 16, 2020.
  • 10 CFR 50.54(f), Seismic Probabilistic Risk Assessment.

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