ML111940277
| ML111940277 | |
| Person / Time | |
|---|---|
| Site: | Callaway  |
| Issue date: | 07/12/2011 |
| From: | Thomas Farnholtz Region 4 Engineering Branch 1 |
| To: | Heflin A Union Electric Co |
| References | |
| IR-11-004 | |
| Download: ML111940277 (6) | |
See also: IR 05000483/2011004
Text
UNITED STATES
NU CLE AR RE G ULAT O RY CO M M I S S I O N
R E GI ON I V
612 EAST LAMAR BLVD , SU ITE 400
AR LIN GTON , TEXAS 76011-4125
July 12, 2011
Mr. Adam C. Heflin, Senior Vice
President and Chief Nuclear Officer
Union Electric Company
P.O. Box 620
Fulton, MO 65251
SUBJECT: CALLAWAY PLANT - NOTIFICATION OF INSPECTION (INSPECTION REPORT
05000483/2011004) AND REQUEST FOR INFORMATION
Dear Mr. Heflin:
The purpose of this letter is to notify you that on September 12, 2011, the U.S. Nuclear
Regulatory Commission (NRC), Region IV staff will begin the on-site portion of the Gas
Accumulation Management in Emergency Core Cooling, Decay Heat Removal, and
Containment Spray Systems Temporary Instruction at your Callaway Plant. These inspections
will be performed in accordance with NRC Temporary Instruction (TI) 2515/177.
Experience has shown that this inspection is resource intensive both for the NRC inspectors
and your staff. In order to minimize the impact to your onsite resources and to ensure a
productive inspection, we have enclosed a request for documents needed for this inspection.
The documents have been divided into two groups.
- The first group lists information necessary for our initial inspection scoping and in-office
preparation activities. This information should be separated by information request number,
especially if provided electronically (e.g., folder with the information request number). This
information should be available to the inspector no later than September 5, 2011. Upon
review of these documents, the inspectors will select additional documentation for review
upon arrival. By September 9, 2011, the inspector will communicate the initial selected
samples.
- The second group of documents requested is needed to support our onsite inspection
activities. This set of documents should be available to the inspector on September 12,
2011. It is also requested that corrective action documents and responses to questions
developed during the inspection be provided to the inspector as the documents are
generated.
We have discussed the schedule for these inspection activities with your staff and understand
that our regulatory contact for this inspection will be Steve Petzel of your licensing organization.
If there are any questions about this inspection or the material requested, please contact the
inspector, Jonathan Braisted, at (817) 860-8194 or by email at Jonathan.Braisted@nrc.gov.
Union Electric Company -2-
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 Code of Federal Regulations, Title 10, Part 2.390 of the NRC's 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 NRC's document system (ADAMS). 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: 50-483
License: NPF-30
Enclosure: MANAGEMENT OF GAS ACCUMULATION IN EMERGENCY CORE
COOLING, DECAY HEAT REMOVAL, AND CONTAINMENT SPRAY
SYSTEMS TEMPORARY INSTRUCTION DOCUMENT REQUEST
CC: Distribution via ListServ for Callaway Plant
Union Electric Company -3-
Electronic distribution by RIV:
Regional Administrator (Elmo.Collins@nrc.gov)
Deputy Regional Administrator (Art.Howell@nrc.gov )
DRP Director (Kriss.Kennedy@nrc.gov )
Acting DRP Deputy Director (Jeff.Clark@nrc.gov )
DRS Director (Anton.Vegel@nrc.gov )
Acting DRS Deputy Director (Robert.Caldwell@nrc.gov )
Senior Resident Inspector (David.Dumbacher@nrc.gov )
Resident Inspector (Jeremy.Groom@nrc.gov )
Branch Chief, DRP/B (Geoffrey.Miller@nrc.gov )
Senior Project Engineer, DRP/B (Rick.Deese@nrc.gov )
Project Engineer, DRP/B (Greg.Tutak@nrc.gov )
Project Engineer, DRP/B (Nestor.Makris@nrc.gov )
CWY Administrative Assistant (Dawn.Yancey@nrc.gov )
Public Affairs Officer (Victor.Dricks@nrc.gov)
Public Affairs Officer (Lara.Uselding@nrc.gov )
Project Manager (Mohan.Thadani@nrc.gov )
Acting Branch Chief, DRS/TSB (Dale.Powers@nrc.gov )
RITS Coordinator (Marisa.Herrera@nrc.gov )
Regional Counsel (Karla.Fuller@nrc.gov )
Congressional Affairs Officer (Jenny.Weil@nrc.gov )
OEMail Resource
Inspection Reports/MidCycle and EOC Letters to the following:
ROPreports
Only inspection reports to the following:
RIV/ETA: OEDO (John.McHale@nrc.gov )
DRS/TSB STA (Dale.Powers@nrc.gov )
S:\DRS\Reports\Reports Draft\CW TI-177RFI - JDB.Docx ADAMS ML111940277
ADAMS: No 7 Yes 7 SUNSI Review Complete Reviewer Initials: TRF
7 Publicly Available 7 Non-Sensitive
Non-publicly Available Sensitive
PE/DRP/C RI/DRS C:DRS/
J. Braisted A. Fairbanks T. Farnholtz
/RA/ /RA/
7/11/11 7/12/11
OFFICIAL RECORD COPY T=Telephone E=E-mail F=Fax
MANAGEMENT OF GAS ACCUMULATION IN EMERGENCY CORE COOLING, DECAY
HEAT REMOVAL, AND CONTAINMENT SPRAY SYSTEMS TEMPORARY INSPECTION
DOCUMENT REQUEST
Inspection Report: 05000483/2011004
Inspection Dates: September 5 - 23, 2011
Inspection Procedure: TI 2515/177, Management of Gas Accumulation in Emergency
Core Cooling, Decay Heat Removal, and Containment Spray
Systems
Inspector: Jonathan Braisted
Project Engineer
(817) 860-8194
Jonathan.Braisted@nrc.gov
The following information should be sent to the Region IV office in hard copy or electronic
format (ims.certrec.com or compact disc, preferred), in care of Jonathan Braisted, to facilitate
the selection of specific items that will be reviewed during the onsite inspection week. The
inspector will select specific items from the information requested below and then request from
your staff additional documents needed during the onsite inspection weeks. Also, we request
that you categorize the documents in your response with the numbered list below. Please
provide requested documentation electronically if possible. If requested documents are large
and only hard copy formats are available, please inform the inspector(s), and provide subject
documentation during the first day of the onsite inspection. If you have any questions regarding
this information request, please call the inspector as soon as possible.
I. Information Requested by September 5, 2011
1. List of corrective action program documents (with a short description) associated with
GL 2008-01, voids in piping, and pressure transients for the previous three years.
2. List of changes (with a short description and tracking number) to the final safety analysis
report (FSAR), technical specifications, technical specification bases, and technical
requirements manual associated with the resolution of GL 2008-01.
3. List of calculations associated with GL 2008-01, including calculations that have been
changed or created in response to GL 2008-01 (with a short description of the
calculation and the change).
4. List (with a short description) of gas intrusion mechanisms that apply to the plant and the
affected system locations (e.g., identify the source, conditions, and expected void
locations). Also, include a short description of how each gas intrusion mechanism has
been addressed (e.g., plant hardware modification, procedure change).
-1- Enclosure
MANAGEMENT OF GAS ACCUMULATION IN EMERGENCY CORE COOLING, DECAY
HEAT REMOVAL, AND CONTAINMENT SPRAY SYSTEMS TEMPORARY INSPECTION
DOCUMENT REQUEST
5. List of the suction piping sections identified as susceptible to gas accumulation (the list
should identify the corresponding system).
6. List of the discharge piping sections identified as susceptible to gas accumulation (the
list should identify the corresponding system).
7. Copies of isometric drawings of the Emergency Core Cooling System, Decay Heat
Removal System, and Containment Spray System (hard-copies are preferred).
8. Copies of piping and instrumentation diagrams (P&IDs) of the Emergency Core Cooling
System, Decay Heat Removal System, and Containment Spray System (hard-copies are
preferred). Please highlight any components that were part of hardware modifications
installed as part of the resolution of GL 2008-01 and all high point vents that are
monitored during void surveillances.
9. Copies of program documents and procedures developed to implement the resolution of
10. List of actions that were completed in response to GL 2008-01.
11. Copies of the modification packages for hardware modifications as part of the resolution
of GL 2008-01.
12. Design basis documents of the Emergency Core Cooling System, Decay Heat Removal
System, and Containment Spray System.
13. Design basis documents of keep-full systems of the Emergency Core Cooling System,
Decay Heat Removal System, and Containment Spray System.
14. System walkdown reports associated with the resolution of GL 2008-01.
15. If applicable, provide a list of inaccessible locations where plant walkdowns of the
Emergency Core Cooling System, Decay Heat Removal System, and Containment
Spray System have not been completed. Include an explanation of why each area is
considered inaccessible.
16. Copies of surveillance procedures associated with the resolution of GL 2008-01 (i.e.,
procedures used for detecting and determining void volumes) and the results of the last
two surveillances for the Emergency Core Cooling System, Decay Heat Removal
System, and Containment Spray System.
17. Copies of procedures used for filling and venting.
18. Copies of trends of periodic venting results.
19. Copies of the engineering evaluations performed for all identified voids.
-2- Enclosure
MANAGEMENT OF GAS ACCUMULATION IN EMERGENCY CORE COOLING, DECAY
HEAT REMOVAL, AND CONTAINMENT SPRAY SYSTEMS TEMPORARY INSPECTION
DOCUMENT REQUEST
20. Basis for the void acceptance criteria (e.g., calculation). If applicable, provide the
justification for any deviation from the void acceptance criteria established by the Office
of Nuclear Reactor Regulation (NRR).
21. Copy of the methodology used for predicting void behavior and impact on system
operability.
22. Copy of any void transport analyses.
23. Copy of vortexing calculations associated with systems under the scope of GL 2008-01.
24. Copies of self-assessments associated with the implementation of the GL 2008-01
program.
25. Copies of any training materials for gas-related concerns.
26. Copies of training modules and attendance records that ensure personnel are aware of
gas-related concerns.
II. Information Requested by September 12, 2011
27. Copies of the selected corrective action program documents.
28. Copies of the selected licensing and design basis document changes.
29. Copies of the selected calculations.
30. Copies of corrective action program implementing procedures.
31. Electronic copies of the current technical specifications, technical specification bases,
updated final safety analysis report, and technical requirements manual.
Inspector Contact Information:
Project Engineer
(817) 860-8194
Jonathan.Braisted@nrc.gov
Mailing Address:
U.S. NRC Region IV
Attn: Jonathan Braisted
612 E. Lamar Blvd., Suite 400
Arlington, TX 76011-4125
-3- Enclosure