ML18025C015

Request for Information for an NRC Triennial Baseline Design Bases Assurance Inspection (Team): Inspection Report 05000282/2018011; 05000306/2018011 (DRS-A.Dunlop)

ML18025C015
Person / Time
Site:	Prairie Island
Issue date:	01/24/2018
From:	Dunlop A Division of Reactor Safety III
To:	Northard S Nuclear Management Co
References
IR 2018001
Download: ML18025C015 (9)

See also: IR 05000282/2018011

Text

UNITED STATES

NUCLEAR REGULATORY COMMISSION

REGION III

2443 WARRENVILLE RD. SUITE 210

LISLE, ILLINOIS 60532-4352

January 24, 2018

Mr. Scott D. Northard

Site Vice President

Prairie Island Nuclear Generating Plant

Northern States Power Company, Minnesota

1717 Wakonade Drive East

Welch, MN 55089-9642

SUBJECT: PRAIRIE ISLAND NUCLEAR GENERATING PLANT, UNITS 1 AND 2REQUEST

FOR INFORMATION FOR AN NRC TRIENNIAL BASELINE DESIGN BASES

ASSURANCE INSPECTION (TEAM): INSPECTION REPORT 05000282/2018011;

05000306/2018011

Dear Mr. Northard:

On May 7, 2018, the U. S. Nuclear Regulatory Commission (NRC) will begin a Triennial

Baseline Design Bases Assurance Inspection (Team) at Prairie Island Nuclear Generating

Plant, Units 1 and 2. This inspection will be performed in accordance with NRC Baseline

Inspection Procedure 71111.21M.

The Design Bases Assurance Inspection focuses on the design, maintenance, and operation of

risk significant components with low margin, or associated with an accident scenario, or a

specific system. The inspection also monitors the implementation of modifications to structures,

systems, and components as modifications to one system may also affect the design bases and

functioning of interfacing systems as well as introduce the potential for common cause failures.

The components and modifications to be reviewed during this baseline inspection will be

identified as part of the preparation for the inspection and finalized during the in-office

preparation week that occurs prior to the first onsite inspection week. In addition, operating

experience issues, associated with the component samples, will also be selected for review.

The inspection team may request scenarios to be performed on the simulator. This request

would require support from your simulator staff to validate scenarios, simulator time, and a crew

to perform the actions which would most likely occur during the second onsite week. The team

will work closely with your staff early on during the inspection process to ensure this activity can

be accomplished with minimal impact.

The inspection will include 2 weeks onsite. The inspection team will consist of 6 NRC

inspectors who will focus on engineering/maintenance/operations of the selected components

and modifications. The current inspection schedule is as follows:

Preparation week: April 30 through May 4, 2018; and

Onsite weeks: May 7-11, 2018, and May 21-25, 2018.

S. Northard -2-

Experience with previous baseline design/modification inspections of similar depth and length

has shown that this type of inspection is 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 for both parties, we have enclosed a request for information

needed for the inspection.

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 the onsite portions of

the inspection. Insofar as possible, this information should be provided electronically to the lead

inspector. The information request has been divided into three groups:

The first group lists information necessary for our initial inspection scoping activities.

This information should be provided to the lead inspector no later than March 29, 2018.

By April 9, 2018, the lead inspector will communicate the initial selected set of

approximately seven components and seven modifications.

The second group of documents requested is those items needed to support our

in-office preparation activities. This set of documents, including the calculations

associated with the initially selected components and the modification packages

associated with the initially selected modifications, should be provided to the lead

inspector at the Regional Office no later than April 25, 2018. During the in-office

preparation activities, the team may identify additional information needed to support

the inspection.

The last group includes the additional information above as well as plant specific

reference material. This information should be available to the team onsite on

May 7, 2018. It is also requested that corrective action documents and/or questions

developed during the inspection be provided to the lead inspector as the documents

are generated.

The lead inspector for this inspection is Andrew Dunlop. We understand that our licensing

contact for this inspection is Frank Sienczak of your organization. If there are any questions

about the inspection or the material requested in the enclosure, please contact the lead

inspector at 630-829-9726 or via e-mail at Andrew.Dunlop@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.

S. Northard -3-

This letter and its enclosure will be made available for public inspection and copying at

http://www.nrc.gov/reading-rm/adams.html and at the NRC Public Document Room in

accordance with 10 CFR 2.390, Public Inspections, Exemptions, Requests for Withholding.

Sincerely,

/RA/

Andrew Dunlop, Senior Reactor Engineer

Engineering Branch 2

Division of Reactor Safety

Docket Nos. 50-282, 50-306

License Nos. DPR-42, DPR-60

Enclosure:

Design Bases Assurance Inspection

Document Request

cc: Distribution via LISTSERV

S. Northard -4-

Letter to Scott Northard from Andrew Dunlop dated January 24, 2018

SUBJECT: PRAIRIE ISLAND NUCLEAR GENERATING PLANT, UNITS 1 AND 2REQUEST

FOR INFORMATION FOR AN NRC TRIENNIAL BASELINE DESIGN BASES

ASSURANCE INSPECTION (TEAM): INSPECTION REPORT 05000282/2018011;

05000306/2018011

DISTRIBUTION:

Jeremy Bowen

RidsNrrPMPrairieIsland Resource

RidsNrrDorlLpl3

RidsNrrDirsIrib Resource

Steven West

Darrell Roberts

Richard Skokowski

Allan Barker

Carole Ariano

Linda Linn

DRPIII

DRSIII

ROPreports.Resource@nrc.gov

ADAMS Accession Number: ML18025C015

OFFICE RIII RIII RIII RIII

NAME ADunlop:cl

DATE 01/24/18

OFFICIAL RECORD COPY

DESIGN BASES ASSURANCE INSPECTION DOCUMENT REQUEST

Inspection Report: 05000282/2018011; 05000306/2018011

Inspection Dates: May 7-11, 2018, and May 21-25, 2018

Inspection Procedure: IP 71111.21M, Design Bases Assurance Inspection (Team)

Lead Inspector: Andrew Dunlop, Senior Reactor Engineer, DRS

630-829-9726

Andrew.Dunlop@nrc.gov

I. Information Requested for Selection of Components/Modifications

The following information is requested by March 29, 2018, or sooner, to facilitate

inspection preparation. If you have any questions regarding this information, please call

the lead inspector as soon as possible. (Please provide the information electronically in

pdf files, Excel, or other searchable formats, preferably on some portable electronic

media (e.g., CD-ROM, DVD, etc.). The portable electronic media 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 light water reactor technology).

1. Risk-ranking of top 250 components from your site specific probabilistic safety

analysis (PSA) sorted by Risk-Achievement Worth. Include values for Birnbaum

Importance, Risk-Reduction Worth, and Fussell-Veseley (as applicable).

2. Risk-ranking of top 100 containment-related components (i.e., Large Early

Release Frequency) from your site specific PSA sorted by Risk-Achievement

Worth. See examples in Inspection Manual Chapter 0609, Appendix H,

Table 4.1, Containment-Related SSCs Considered for Large Early Release

Frequency Implications.

3. Provide a list of the top 200 cut-sets from your PSA.

4. Provide a list of the top 100 cut-sets for each initiator modeled in the PSA that

contributes more than 5 percent to the baseline plant core damage frequency.

5. Copies of PSA system notebooks and latest PSA summary document.

6. Provide copies of the emergency operating procedures.

7. If you have an External Events or Fire PSA Model, provide the information

requested in Items 1 and 2 for external events and fire. Provide narrative

description of each coded event (including fire, flood zone description).

Enclosure

DESIGN BASES ASSURANCE INSPECTION DOCUMENT REQUEST

8. Any pre-existing evaluation or list of components and associated calculations

with low design margins, (i.e., pumps closest to the design limit for flow or

pressure, diesel generator close to design required output, heat exchangers

close to rated design heat removal etc.).

9. Electronic copy of the site Individual Plant Examination of External Events, if

available.

10. List of available design (setup) margins in both the open and closed direction

(identify safety-related direction) for valves in the motor-operated valve and

air-operated valve programs. Identify the basis for how the margin was

determined.

11. List of high risk Maintenance Rule systems/components based on engineering or

expert panel judgment (i.e., those systems/components not identified high risk in

the PSA).

12. Structures, systems, and components (SSCs) in the Maintenance Rule (a)(1)

category for the last 3 years.

13. Site top 10 issues list (if applicable).

14. A list of operating experience evaluations for the last 3 years.

15. Information of any common cause failure of components experienced in the last

5 years at your facility.

16. List of Root Cause Evaluations associated with component failures or design

issues initiated/completed in the last 5 years.

17. List of open operability evaluations.

18. List of SSCs considered operable but degraded/nonconforming.

19. List of permanent plant modifications to SSCs that are field work complete in

the last 3 years. (For the purpose of this inspection, permanent plant

modifications include permanent: plant changes, design changes, set point

changes, equivalency evaluations, suitability analyses, and commercial grade

dedications.) The list should contain the number of each document, title,

revision/date, and the affected system.

20. A list of calculation changes that have been issued for use in the last 3 years.

21. Copies of procedures addressing the following: modifications, design changes,

set point changes, equivalency evaluations or suitability analyses, commercial

grade dedications, and post-modification testing.

22. A list of corrective action documents (open and closed) in the last 3 years that

address permanent plant modifications issues, concerns, or processes. These

documents should also include the corrective action documents associated with

the modification implementation.

23. Current management and engineering organizational chart.

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DESIGN BASES ASSURANCE INSPECTION DOCUMENT REQUEST

24. Electronic copies of Updated Final Safety Analysis Report, Technical

Specifications, Technical Specifications Bases, and Technical Requirements

Manual.

25. Major one line electrical drawings (ac and dc) and key diagrams (paper copies).

26. Electronic copy of Piping and Instrumentation Drawings (if available).

II. Information Requested (for the approximate 7 selected components and

7 selected modifications) to be Available by April 25, 2018, (will be reviewed

by the team in the Regional office during the week of April 30, 2018).

This information should be separated for each selected component or modification,

especially if provided electronically (e.g., folder with component or modification name

that includes calculations, condition reports, maintenance history, etc.). Items 1-12 are

associated with the selected components and item 13 for the selected modifications.

1. List of condition reports (corrective action documents) associated with each of

the selected components for the last 6 years.

2. The maintenance history (corrective, preventive, and elective) associated with

each of the selected components for the last 10 years. Identify frequency of

preventive maintenance activities.

3. Copies of calculations associated with each of the selected components (if not

previously provided), excluding data files. Please review the calculations and

also provide copies of important referenced material (such as drawings,

engineering requests, and vendor letters). [Pipe stress calculations excluded

from this request]

4. System Health Reports, System Descriptions, Design Basis Documents, and/or

Training Lesson Plans associated with each of the selected components.

5. A list of modifications, including equivalency evaluations and setpoint changes,

associated with each of the selected components. This list should include a

descriptive paragraph on the purpose of the modification. Please ensure this list

only includes design completed (not canceled) modifications.

6. Copies of operability evaluations (open/closed for last 3 years) associated with

each of the selected components and plans for restoring operability, if applicable.

7. Copies of selected operator work-around evaluations associated with each of the

selected components and plans for resolution, if applicable.

8. Copies of any open temporary modifications associated with each of the selected

components, if applicable.

9. Trend data on the selected electrical/mechanical components performance for

last 3 years (For example, pumps performance including in-service testing, other

vibration monitoring, oil sample results, etc., for valves: stroke time and leak rate

results, diagnostic trend data, etc.).

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DESIGN BASES ASSURANCE INSPECTION DOCUMENT REQUEST

10. Provide copies of the normal and abnormal operating procedures associated with

the selected components and selected scenarios.

11. List of time critical or risk significant operator actions associated with

components. Identify those actions that do not have job performance measures.

12. Copy of latest completed tests and surveillances for each component, for

example:

a. Pumps: comprehensive test, quarterly test, flow balance, etc.

b. Valves: stroke time testing, diagnostic testing, leak testing, interlocks, etc.

c. Heat Exchangers/Room Coolers: thermal performance, clean/inspect, fan

flows, etc.

d. Components: Technical Specification surveillances.

e. Acceptance criteria basis calculations should also be included.

13. For each of the selected modifications, copies of associated documents such as

modification package, engineering changes, 50.59 screening or evaluation,

calculations, post-modification test packages, corrective action documents,

design drawings, preventive maintenance requirements and procedures, etc.

14. A copy of any internal/external self-assessments and associated corrective

action documents generated in preparation for the inspection.

15. A copy of engineering/operations related audits completed in the last 2 years.

III. Additional Information to be Provided on May 7, 2018, Onsite (for final selected

components and modifications)

1. During the in-office preparation activities, the team will be making final selections

and may identify additional information needed to support the inspection. The

lead inspector will provide a list of the additional information needed during the

week of April 30, 2018.

2. Schedule of any testing/maintenance activities to be conducted on the selected

components during the two onsite inspection weeks.

IV. 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. Copies of the list of questions submitted by the team members and the

status/resolution of the information requested (provide daily by 2:00 p.m.

during the inspection to each team member).

3. One complete set of Piping and Instrumentation Drawings (paper copies).

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DESIGN BASES ASSURANCE INSPECTION DOCUMENT REQUEST

4. Reference materials. (make available if needed during all onsite weeks):

a. Individual Plant Examination/Probabilistic Risk Assessment report;

b. Procurement documents for components and modifications selected (verify

retrievable);

c. Plant procedures (normal, abnormal, emergency, surveillance, etc.); and

d. Vendor manuals.

If you have questions regarding the information requested, please contact the lead inspector

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