ML100260800
| ML100260800 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 01/26/2010 |
| From: | Jamie Benjamin NRC/RGN-III/DRS/EB2 |
| To: | Schimmel M Northern States Power Co |
| References | |
| IR-10-006 | |
| Download: ML100260800 (8) | |
See also: IR 05000282/2010006
Text
UNITED STATES
NUCLEAR REGULATORY COMMISSION
REGION III
2443 WARRENVILLE ROAD, SUITE 210
LISLE, IL 60532-4352
January 26, 2010
Mr. Mark Schimmel
Site Vice President
Prairie Island Nuclear Generating Plant
Northern States Power Company, Minnesota
1717 Wakonade Drive East
Welch, MN 55089
SUBJECT:
PRAIRIE ISLAND NUCLEAR GENERATING PLANT, UNITS 1 AND 2 -
REQUEST FOR INFORMATION FOR AN NRC TRIENNIAL BASELINE
COMPONENT DESIGN BASES INSPECTION (CDBI) INSPECTION REPORT
05000282/2010006(DRS); 05000306/2010006(DRS)
Dear Mr. Schimmel:
On June 28, 2010, the NRC will begin a triennial baseline Component Design Bases Inspection
(CDBI) at Prairie Island Nuclear Generating Plant, Units 1 and 2. A team of six inspectors will
perform this 3-week inspection. This inspection will be performed in accordance with NRC
Baseline Inspection Procedure (IP) 71111.21.
The CDBI focuses on components that have high risk and low design margins. The
components to be reviewed during this baseline inspection will be identified during an in-office
preparation week prior to the first week of the on-site inspection. In addition, a number of risk
significant operator actions and operating experience issues, associated with the component
samples, will also be selected for review.
The inspection will include three weeks on-site. The inspection team will consist of six NRC
inspectors, of which five will focus on engineering and one on operations. The current
inspection schedule is as follows:
On-site weeks:
June 28 - July 02, 2010;
July 12 - 16, 2010; and
July 26 - 30, 2010.
The team will be preparing for the inspection, mainly during the week of June 14, 2010, as
discussed in the attached enclosure. A Region III Senior Reactor Analyst may accompany the
inspection team during the week of June 28, 2010, to review probabilistic risk assessment data,
and assist in identifying risk significant components, which will be reviewed during the
inspection.
M. Schimmel
-2-
Experience with previous baseline design 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 on-site 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 April 16, 2010.
By May 20, 2010, the lead inspector will communicate the initial selected set of
approximately 30 high risk components.
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
initial selected components, should be provided to the lead inspector at the Regional Office
no later than June 04, 2010. 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 on-site on June 28, 2010. 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 Mr. Alan Dahbur. We understand that our nuclear
licensing contact for this inspection is Ms. Kathryn Mews 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) 829-9810 or via e-mail at alan.dahbur@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.
M. Schimmel
-3-
In accordance with 10 CFR 2.390 of the NRCs Rules of Practice, a copy of this letter and its
enclosure will be available electronically for public inspection in the NRC Public Document
Room or from the Publicly Available Records (PARS) component of NRCs document system
(ADAMS), accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html (the
Public Electronic Reading Room).
Sincerely,
/RA/
Jamie Benjamin, Acting Chief
Engineering Branch 2
Division of Reactor Safety
Docket No. 50-282; 50-306
Enclosure:
Information Request for Component Design Bases Inspection (CDBI)
cc w/encl:
Distribution via ListServ
INFORMATION REQUEST FOR
COMPONENT DESIGN BASES INSPECTION (CDBI)
Enclosure
1
Inspection Report: 05000282/2010006(DRS); 05000306/2010006(DRS)
Inspection Dates:
June 28 - July 02, 2010; July 12 - 16, 2010; and
July 26 - 30, 2010.
Inspection Procedure:
IP 71111.21 Component Design Bases Inspection
Lead Inspector:
Alan Dahbur, Lead Inspector
(630) 829-9810
(alan.dahbur@nrc.gov )
II. Information Requested (by April 16, 2010, or Sooner) Prior to the On-site
Information Gathering/Inspection Week
The following information is needed to facilitate inspection preparation. If you have any
questions regarding this information, please call the team leader 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., CDROM, DVD. 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 150 components from your site specific probabilistic safety
analysis (PSA) sorted by Risk Achievement Worth (RAW). Include values for
Birnbaum Importance, Risk Reduction Worth (RRW), and Fussell-Veseley (FV)
(as applicable).
2.
Provide a list of the top 200 cut-sets from your PSA.
3.
Risk ranking of operator actions from your site specific PSA sorted by RAW.
Provide copies of your human reliability worksheets for these items.
4.
List of time critical operator actions. Identify those actions that do not have job
performance measures (JPMs).
5.
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).
INFORMATION REQUEST FOR
COMPONENT DESIGN BASES INSPECTION (CDBI)
Enclosure
2
6.
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.).
7.
List of available design (setup) margins in both the open and closed direction
(identify safety-related direction) for valves in the motor-operated valve (MOV)
and air-operated valve (AOV) programs. Identify the basis for how the margin
was determined.
8.
List of high risk Maintenance Rule systems/components based on engineering or
expert panel judgment (i.e., those systems/components not identified in the
PRA).
9.
Structures, systems, and components (SSCs) in the Maintenance Rule (a)(1)
category for the last three years.
10.
Site top ten issues list (if applicable).
11.
A list of operating experience evaluations for the last three years.
12.
Information of any common cause failure of components experienced in the last
five years at your facility.
13.
List of Root Cause Evaluations associated with component failures or design
issues initiated/completed in the last five years.
14.
List of open operability evaluations.
15.
Current management and engineering organizational chart.
16.
Electronic copies of Updated Safety Analysis Report, Technical Specifications,
Technical Specifications Bases, and Technical Requirements Manual.
17.
Major one line electrical drawings (ac and dc) and key diagrams (paper copies).
18.
Electronic copy of P&IDs (if available).
INFORMATION REQUEST FOR
COMPONENT DESIGN BASES INSPECTION (CDBI)
Enclosure
3
III.
Information requested (for the approximate 30 selected components) to be
available by June 04, 2010, (will be reviewed by the team in the Regional office
during the week of June 14, 2010).
This information should be separated for each selected component, especially if
provided electronically (e.g., folder with component name that includes calculations,
condition reports, maintenance history, etc.).
1.
List of condition reports (corrective action documents) associated with each of
the selected components for the last four years.
2.
The corrective maintenance history associated with each of the selected
components for the last four years.
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).
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 three 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 three years (for example, pumps performance, including in-service testing,
other vibration monitoring, oil sample results, etc., as applicable).
10.
A copy of any internal/external self-assessments and associated corrective
action documents generated in preparation for the inspection.
11.
A copy of engineering/operations related audits completed in the last two years.
INFORMATION REQUEST FOR
COMPONENT DESIGN BASES INSPECTION (CDBI)
Enclosure
4
12.
Provide list of PRA assumptions regarding operator actions and the associated
procedures.
13.
Provide copies of any simulator scenarios, lesson plans, or job performance
measures for the selected operator actions.
14.
Provide copies of the results of any time-dependent simulator scenarios or job
performance measures for operator crews/individuals for the selected operator
actions.
15.
Provide copies of the emergency operating procedures, normal and abnormal
operating procedures and any alarm response procedures for the selected
operator actions. Also provide copies of the conduct for operations and
operability determination procedures.
IV. Additional Information to be provided on June 28, 2010, on-site (for final 15-20
selected components)
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
June 14, 2010.
V. 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 during the inspection
to each team member).
3.
One complete set of P&IDs (paper copies).
4.
Reference materials. (make available if needed during all on-site weeks):
IPE/PRA report;
Procurement documents for components selected (verify retrievable);
Plant procedures (normal, abnormal, emergency, surveillance, etc.); and
Vendor manuals.
If you have questions regarding the information requested, please contact the lead inspector.
M. Schimmel
-3-
In accordance with 10 CFR 2.390 of the NRCs Rules of Practice, a copy of this letter
and its enclosure will be available electronically for public inspection in the NRC Public
Document Room or from the Publicly Available Records (PARS) component of NRCs
document system (ADAMS), accessible from the NRC Web site at
http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).
Sincerely,
/RA/
Jamie Benjamin, Acting Chief
Engineering Branch 2
Division of Reactor Safety
Docket No. 50-282; 50-306
Enclosure:
Information Request for Component Design Bases Inspection (CDBI)
cc w/encl:
Distribution via ListServ
DISTRIBUTION:
Susan Bagley
RidsNrrPMPrairieIsland
RidsNrrDorlLpl3-1 Resource
RidsNrrDirsIrib Resource
Cynthia Pederson
DRPIII
DRSIII
Patricia Buckley
ROPreports Resource
Document Name: G:\\DRS\\Work in Progress\\Ltr 012610 PRA CDBI RFI AKD.doc
Publicly Available
Non-Publicly Available
Sensitive
Non-Sensitive
To receive a copy of this document, indicate in the concurrence box "C" = Copy without attach/encl "E" = Copy with attach/encl "N" = No copy
OFFICE:
RIII
RIII
RIII
RIII
NAME:
ADahbur:ls
JBenjamin
DATE:
01/25/10
01/26/10
OFFICIAL RECORD COPY