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ISTOG – NRC Update Winter Meeting 2010 – Clearwater, FL

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reed-lyons
15 diapositives · 302 Views · Oct 30, 2014

On December 6, 2010, Tony McMurtray led discussions at the NRC Winter Meeting in Clearwater, FL. Key topics included the draft NUREG-1946, updates to guidance on pump and valve preconditioning, and a review of IST test applicability under current regulations. The need for clarification regarding missed IST tests and dynamic restraints (snubbers) was emphasized. The meeting also outlined future NRC activities, including planned inspections and rulemaking timelines. Public comment periods were discussed, providing stakeholders a voice in the ongoing evolution of nuclear reactor regulations.

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ISTOG – NRC Update Winter Meeting 2010 – Clearwater, FL
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  1. ISTOG – NRC UpdateWinter Meeting 2010 – Clearwater, FL Tony McMurtray Chief, Component Performance & Testing Branch Office of Nuclear Reactor Regulation December 6, 2010

  2. Topics for Discussion • Draft NUREG-1946 • Replacement for NUREG-1482, Rev. 1 • Inclusion of Updated Guidance on Preconditioning • Use of Tech. Spec. Surveillance Reqs. Applicability for IST Pump and Valve Tests • Missed Excess Flow Check Valve Test at Clinton • Dynamic Restraints (Snubbers) • Other Issues • 10 CFR 50.55a Rulemaking • 10 CFR 50.69 Alt. Treatment Inspection Procedure • ASME/NRC 2011 Symposium

  3. Draft NUREG-1946 • Reasons for Change to NUREG-1482, Rev. 1 • Update Document to Reflect Changes to the ASME OM Code • Remove Information that is not Accurate • Remove Guidance that is Available in Other Documents • Remove/Change Implied OM Code Reliefs • Update Other Information

  4. Draft NUREG-1946 • Much More Info. from NUREG-1482 should have been included in Draft NUREG-1946 • Guidance on Acceptable and Unacceptable Preconditioning of Pumps and Valves will be Added • Needs to Address Several New Reactor Issues

  5. Draft NUREG-1946 • Initial Public Comment Period Closes on January 20, 2011 • There Will Likely Be Another Public Comment Period

  6. Use of TS SR App. for IST Tests • Background • TS SR 3.0.3 allows licensees to extend the frequency of a missed TS Surveillance • Current interpretation from the NRC is that SR 3.0.3 is only applicable to TS surveillances • This interpretation also likely impacts TS SR 3.0.2 • The TS Administrative Controls Section for the IST Program states that SR 3.0.3 is applicable to IST • NUREG-1482, Rev. 1 also notes that SR 3.0.3 is applicable to the IST Program

  7. Use of TS SR App. for IST Tests • Current and Future Activities • Licensees that miss an IST test should perform an operability/functionality assess. & evaluate if a relief request is needed • NRC staff are preparing a generic communication to explain the operational impact of this current interpretation • NRC staff are working with the TS Task Force to develop revs. to TSs for IST Prgm. testing • NRC staff are also working with the ASME OM Code to develop Code Cases to address the requirements for IST frequency & grace periods & for missed tests

  8. Dynamic Restraints (Snubbers) • Background • NRC staff discovered that some licensees were not following the ISI & IST requirements for snubbers as specified in 10 CFR 50.55a • Licensees must submit a request for relief & receive NRC approval if they are not following the requirements in 10 CFR 50.55a • Requests for relief are only valid for the 10-year ISI/IST period in which relief was granted

  9. Dynamic Restraints (Snubbers) • RIS & EGM • Regulatory Issue Summary (RIS) 2010-06 reminded licensees of the NRC’s requirements for snubber inspection & testing • Enforcement Guidance Memorandum (EGM)-10-001 provided enforcement discretion after issuance of RIS 2010-06 for violations of 10 CFR 50.55a associated with ISI & IST of snubbers

  10. Dynamic Restraints (Snubbers) • EGM Specifics & Expectations for Licensees • EGM allowed enforcement discretion for six months after the RIS was issued if: • Licensees enter any snubber noncompliances into their corrective action program • Implement adequate compensatory measures for noncompliances • Appropriately evaluate any operability/functionality effects on SSCs • For licensees that meet the requirements for discretion described above, an additional 18-month period of discretion is allowed for: • Correction of identified noncompliances • Adequate compensatory measures must be maintained

  11. Dynamic Restraints (Snubbers) • Future NRC Activities • NRC plans to issue an inspection procedure to review the compliance of licensees’ snubber programs with 10 CFR 50.55a requirements

  12. Other Issues • 10 CFR 50.55a Rulemaking • New Rule will incorporate by Reference the 2005 & 2006 Addenda of the ASME OM Code • Final Rulemaking is scheduled for completion by May 1, 2011 • Reg. Guide 1.193, Rev. 3, “ASME Code Cases Not Approved for Use,” was issued in October 2010 • Proposed Rulemaking & Reg. Guides 1.192, Rev. 1, “O&M Code Case Acceptability, ASME OM Code” & 1.193, Rev. 4 should be issued for public comment in the Spring of 2011

  13. Other Issues • 10 CFR 50.69 Alternative Treatment Inspection Procedure • Will be shared with the nuclear industry (via NEI) in early 2011 • Procedure focuses on the most risk significant aspects of implementation of 10 CFR 50.69 • Inspections will be performance based • Final Inspection Procedure to be issued in the Summer of 2011

  14. Other Issues • ASME/NRC 2011 Symposium • Will take place in Rockville, MD on August 15th & 16th 2011 • Abstracts for papers due by December 17, 2010 • Includes discussion of issues related to IST of pumps and valves & ISI and IST of snubbers • Will also include info. exchange on new reactor IST issues • Final Papers due on May 13, 2011

  15. QUESTIONS