ML17142A135
| ML17142A135 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 05/19/2017 |
| From: | Thomas Farnholtz Region 4 Engineering Branch 1 |
| To: | Diya F Ameren Missouri |
| References | |
| IR 2017007 | |
| Download: ML17142A135 (7) | |
See also: IR 05000483/2017007
Text
May 19, 2017
Mr. Fadi Diya, Senior Vice President
and Chief Nuclear Officer
Ameren Missouri
Callaway Plant
P.O. 620
Fulton, MO 65251
SUBJECT: CALLAWAY PLANT - NOTIFICATION OF NRC DESIGN BASES ASSURANCE
INSPECTION (05000483/2017007) AND INITIAL REQUEST FOR INFORMATION
Dear Mr. Diya:
On July 18, 2017, the U.S. Nuclear Regulatory Commission (NRC) will begin a triennial baseline
Design Bases Assurance Inspection at your Callaway Plant. A six-person team will perform this
inspection using NRC Inspection Procedure 71111.21M, Design Bases Assurance Inspection.
The inspection focuses on components, modifications, and operator actions that have high risk
and low design margins. The samples reviewed during this inspection will be identified during
an information gathering visit and the subsequent in-office preparation week. In addition, a
number of operating experience issues will also be selected for review.
The inspection will include an information gathering site visit by the team leader and a senior
reactor analyst and two weeks of on-site inspection by the team. The inspection will consist of
four NRC inspectors and two contractors, of which five will focus on engineering and one on
operations. The current inspection schedule is as follows:
On-site Information Gathering Visit: June 12-16, 2017
Preparation Week: July 10-14, 2017
On-site Weeks: July 17-21 and July 31-August 4, 2017
The purpose of the information gathering visit is to meet with members of your staff to identify
potential risk-significant components, modifications, and operator actions. The lead inspector
will also request a tour of the plant with members of your operations staff and probabilistic
safety assessment staff. During the on-site weeks, several days of time will be needed on the
plant-referenced simulator in order to facilitate the development of operator action-based
scenarios. Additional information and documentation needed to support the inspection will be
identified during the inspection, including interviews with engineering managers, engineers, and
probabilistic safety assessment staff.
UNITED STATES
NUCLEAR REGULATORY COMMISSION
REGION IV
1600 E. LAMAR BLVD
ARLINGTON, TX 76011-4511
F. Diya
2
Our experience with these inspections has shown that they are extremely resource intensive,
both for the NRC inspectors and the licensee staff. In order to minimize the inspection impact
on the site and to ensure a productive inspection, we have enclosed a request for information
needed for the inspection. The request has been divided into two groups. The first group lists
information necessary for the information gathering visit and for general preparation. This
information should be available to the regional office no later than June 5, 2017. Insofar as
possible, this information should be provided electronically to the lead inspector. Since the
inspection will be concentrated on high risk/low margin components and modifications,
calculations associated with your list of high risk components and modifications should be
available to review during the information gathering visit to assist in our selection of components
based on available design margin.
The second group of documents requested, lists information necessary to aid the inspection
team in tracking issues identified as a result of the inspection. It is requested that this
information be provided to the lead inspector as the information is generated during the
inspection. An additional request will be made by the team during the preparation week once
the specific components and modifications have been selected. Additional requests by
inspectors will also be made throughout the on-site weeks for specific documents needed to
complete the review. It is important that all of these documents are up to date and complete in
order to minimize the number of additional documents requested during the preparation and/or
on-site portions of the inspection. In order to facilitate the inspection, we request that a contact
individual be assigned to each inspector to ensure information requests, questions, and
concerns are addressed in a timely manner.
The lead inspector for this inspection is Mr. Ronald A. Kopriva. We understand that our
licensing engineer contact for this inspection is Mr. Randall Pohlman. If there are any questions
about the inspection or the requested materials, please contact the lead inspector by telephone
at 817-200-1104 or by e-mail at Ron.Kopriva@nrc.gov.
This letter does not contain new or amended information collection requirements subject to
the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.). Existing information collection
requirements were approved by the Office of Management and Budget, control
number 3150-0011. The NRC may not conduct or sponsor, and a person is not required to
respond to, a request for information or an information collection requirement unless the
requesting document displays a currently valid Office of Management and Budget control
number.
In accordance with 10 CFR 2.390 of the NRCs Rules of Practice, a copy of this letter will be
made available electronically for public inspection in the NRC Public Document Room or from
the Publicly Available Records (PARS) component of NRCs document system (ADAMS).
F. Diya
3
ADAMS is accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html (the
Public Electronic Reading Room).
Sincerely,
/RA/
Thomas R. Farnholtz, Chief
Engineering Branch 1
Division of Reactor Safety
Docket No. 50-483
License No. NPF-30
Enclosure:
Design Bases Assurance
Inspection Request for Information
cc: Electronic Distribution
SUNSI Review
ADAMS:
Non-Publicly Available
Non-Sensitive
Keyword:
By: RKopriva
Yes No
Publicly Available
Sensitive
OFFICE
SRI:EB1
C:EB1
NAME
RKopriva
TFarnholtz
SIGNATURE
/RA/
/RA/
DATE
5/16/2017
5/19/2017
Enclosure
Initial Request for Information
Design Bases Assurance Inspection
Callaway Plant
Inspection Report: 05000483/2017007
Information Gathering Dates: June 12-June 16, 2017
Inspection Dates:
July 17-21 and July 31-August 4, 2017
Inspection Procedure:
IP 71111.21M, Design Bases Assurance Inspection
Lead Inspector:
Ron Kopriva, Senior Reactor Inspector
I.
Information Requested Prior to Information Gathering Visit (June 5, 2017)
The following information (Section I of this enclosure) should be sent to the Region IV
office in hard copy or electronic format (Certrec IMS preferred), to the attention of
Ron Kopriva by June 5, 2017, to facilitate the reduction in the items to be selected for a
final list during the preparation week, July 10, 2017. The inspection team will finalize its
sample selections during the prep week and will provide an additional information
request with specific items by sample. This information shall be made available by the
first day of the on-site portion of the inspection. The specific items selected from the lists
shall be available and ready for review on the day indicated in this request. *Please
provide requested documentation electronically in pdf files, Excel, or other searchable
formats, if possible. The information should contain descriptive names, and be indexed
and hyperlinked to facilitate ease of use. Information in lists should contain enough
information to be easily understood by someone who has knowledge of boiling water
reactor technology. If requested documents are large and/or only hard copy formats are
available, please inform the inspector(s), and provide subject documentation during the
first day of the on-site inspection.
1. An Excel spreadsheet of equipment basic events (with definitions), including
importance measures sorted by risk achievement worth and Fussell-Vesely from
your internal events probabilistic risk assessment. Include basic events with risk
achievement worth value of 1.3 or greater.
2. A list of the top 50 cut-sets from your PRA.
3. Copies of probabilistic risk assessment system notebooks and the latest
probabilistic risk assessment summary document.
4. An Excel spreadsheet of probabilistic risk assessment human action basic events
or risk ranking of operator actions from your site-specific PSA sorted by risk
achievement worth and Fussell-Vesely. Provide copies of your human reliability
worksheets for these items.
2
5. If you have an external events or fire PSA model, provide the information
requested in items 1-4 for external events and fire.
6. Any pre-existing evaluation or list of components and associated calculations
with low design margins.
7. A list of high large early release frequency impact events and associated
components.
8. A list of high risk maintenance rule systems/components and functions; based on
engineering or expert panel judgment.
9. A list of operating experience evaluations for the last 3 years.
10. A list of all time-critical operator actions in procedures.
11. A list of permanent and temporary modifications performed in the past five years
to structure, systems, and components sorted by component identified in Item 1.
12. Post-modification testing, including performance characteristics affected,
assumptions, and acceptance criteria associated with modifications provided in
item 11.
13. Documents associated with modifications listed in item 11. Specifically,
calculations, specifications, vendor manuals, updated final safety analysis report,
Technical Specifications and Bases updates.
14. Updated procedures and training plans associated with the modifications listed in
item 11.
15. Updated maintenance and surveillance activities and procedures associated with
modifications listed in item 11.
16. A list of current operator work arounds/burdens.
17. A list of the design calculations that provide the design margin information for
components included in Item 1. (Calculations for selected components should be
available during the information gathering visit).
18. List of root cause evaluations associated with component failures or design
issues initiated/completed in the last 5 years.
19. A copy of the current management and engineering organizational charts.
20. A copy of the Callaway Plant individual plant examination of external events, if
available electronically.
21. A list of any common-cause failures of components in the last 3 years.
22. An electronic copy of the design bases documents.
3
23. An electronic copy of the system health notebooks.
24. A copy of any internal/external self-assessments and associated corrective
action documents generated in preparation for this inspection.
25. A copy of engineering/operations related audits completed in the last 2 years.
26. Structures, systems, and components in the Maintenance Rule (a)(1) category.
27. Site top 10 issues list, if available.
28. Procedures used to accomplish operator actions associated with the basic
events in your PRA.
29. A list of licensee contacts for the inspection team with phone numbers.
30. Electronic copies of the Technical Specifications, Technical Specifications Bases,
and the updated final safety analysis report.
31. One-line drawings of emergency core cooling system, ultimate heat sink,
emergency feedwater, safety-related electrical systems.
II.
Information Requested to be provided throughout the inspection.
1. Copies of any corrective action documents generated as a result of the teams
questions or queries during this inspection.
2. Calculations and drawings associated with selected components.
3. Copies of the list of questions submitted by the team members and the
status/resolution of the information requested (provide daily during the inspection to
each team member).
Inspector Contact Information:
John Watkins
Senior Reactor Inspector
Reactor Inspector
Reactor Inspector
817-200-1104
817-200-1152
817-200- 1070
Ron.Kopriva@nrc.gov
Isaac.Anchondo@nrc.gov
John.Watkins@nrc.gov
Senior Reactor Technology Instructor
423-655-6699
Anthony.Palmer@nrc.gov
Mailing Address:
U.S. NRC, Region IV
Attn: Ron Kopriva
1600 East Lamar Blvd.
Arlington, TX 76011-4511