ML12088A148
| ML12088A148 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 03/20/2012 |
| From: | Thomas Farnholtz Region 4 Engineering Branch 1 |
| To: | O'Grady B Tennessee Valley Authority |
| References | |
| IR-12-003 | |
| Download: ML12088A148 (6) | |
See also: IR 05000298/2012003
Text
UNITE D S TATE S
NUC LEAR RE GULATOR Y C OMMI S SI ON
RE G IO N I V
1600 EAST LAMAR BLVD
AR L INGTON , TEXAS 7 60 11 - 4511
March 20, 2012
Brian J. OGrady, Vice President-Nuclear
and Chief Nuclear Officer
Nebraska Public Power - Cooper
Nuclear Station
72676 648A Avenue
Brownville, NE 68321
SUBJECT: COOPER NUCLEAR STATION - NOTIFICATION OF NRC TRIENNIAL HEAT
EXCHANGER INSPECTION (05000298/2012003)
Dear Mr.OGrady:
The purpose of this letter is to notify you that the U.S. Nuclear Regulatory Commission (NRC)
Region IV staff will conduct a triennial heat sink inspection at your facility. The inspection will be
comprised of one reactor inspector from the NRC Region IV office. The inspection will be
conducted in accordance with Inspection Procedure 71111.07T, "Heat Sink Performance."
The schedule for the inspection is as follows:
Onsite inspection: May 14 - 18, 2012
Experience has shown that this inspection is resource intensive for 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. Please note that the documents
are requested to be provided by April 30 2012. We request, that during the onsite inspection
week, you ensure that copies of analyses, evaluations, or documentation regarding the
implementation and maintenance of your heat exchanger program are available. Of specific
interest are those documents that establish that your heat exchanger program satisfies NRC
regulatory requirements and conforms to applicable NRC guidance. Also, appropriate
personnel knowledgeable of safety-related heat exchangers should be available to support the
inspector at the site during the inspection.
We have discussed the schedule for this inspection activity with your staff and understand that
our regulatory contact for this inspection will be Jim Flaherty of your licensing organization. If
there are any questions about this inspection or the material requested, please contact the
inspector, Greg Pick, at 817-200-1270 or by email, greg.pick@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 and its
B. OGrady -2-
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: 50-298
License: DPR-46
cc w/enclosure: Electronic Distribution
B. OGrady -3-
Electronic distribution by RIV:
Regional Administrator (Elmo.Collins@nrc.gov)
Deputy Regional Administrator (Art.Howell@nrc.gov)
DRP Director (Kriss.Kennedy@nrc.gov)
DRP Deputy Director (Troy.Pruett@nrc.gov)
DRS Director (Anton.Vegel@nrc.gov)
DRS Deputy Director (Tom.Blount@nrc.gov)
Senior Resident Inspector (Jeffrey.Josey@nrc.gov)
Resident Inspector (Michael.Chambers@nrc.gov)
Branch Chief, DRP/C (Vincent.Gaddy@nrc.gov)
Senior Project Engineer, DRP/C (Bob.Hagar@nrc.gov)
Project Engineer, DRP/C (Jonathan.Braisted@nrc.gov)
Project Engineer, DRP/C (Rayomand.Kumana@nrc.gov)
CNS Administrative Assistant (Amy.Elam@nrc.gov)
Public Affairs Officer (Victor.Dricks@nrc.gov)
Public Affairs Officer (Lara.Uselding@nrc.gov)
Project Manager (Lynnea.Wilkins@nrc.gov)
Acting Branch Chief, DRS/TSB (Ryan.Alexander@nrc.gov)
RITS Coordinator (Marisa.Herrera@nrc.gov)
Regional Counsel (Karla.Fuller@nrc.gov)
Congressional Affairs Officer (Jenny.Weil@nrc.gov)
OEMail Resource
ROPreports
RIV/ETA: OEDO (Lydia.Chang@nrc.gov)
DRS/TSB STA (Dale.Powers@nrc.gov)
R:\_REACTORS\CNS 2012003 RFI 07T-gap ADAMS No.: ML12088A148
ADAMS: No Yes SUNSI Review Complete Reviewer Initials: GAP
Publicly Available Non-Sensitive
Non-publicly Available Sensitive
SRI:GAP/tek C:EB1
GPick TFarnholtz
/RA/ /RA/
03/20/2012 03/20/2012
OFFICIAL RECORD COPY T=Telephone E=E-mail F=Fax
ENCLOSURE
Heat Exchanger/Heat Sink Inspection Documentation Request
The following heat exchangers/heat sinks have been selected for inspection:
- Division II emergency diesel generator jacket water and lube oil heat exchangers
- Division II residual heat removal heat exchangers
- All reactor equipment cooling heat exchangers
Please provide the following documentation prior to the onsite inspection week, preferably no
later than April 30, 2012.
Test Documents
Copies of the last two heat exchanger tests for the selected heat exchangers (original test data
in work orders or filled in test procedures) and copies of condition reports associated with the
heat exchanger testing.
List of condition reports, with descriptions, associated with heat exchanger testing for the past 3
years (all safety-related heat exchangers).
Copies of applicable heat exchanger test procedures for the selected heat exchangers including
test conditions and acceptance criteria.
Copies of chemistry control procedures and results of chemistry sampling and a list of condition
reports concerning service water chemistry problems for the past 3 years.
Documents that show the as-found results are recorded, evaluated, and appropriately
dispositioned such that the as-left condition is acceptable.
Cleaning Documents
Copies of the last two heat exchanger cleaning results for the selected heat exchangers, original
data (found in filled test procedures or work orders) and condition reports associated with heat
exchanger cleaning.
Copies of the cleaning procedures that have acceptance criteria for the selected heat
exchangers.
List of condition reports, with descriptions, associated with heat exchanger cleaning for the
past 3 years (all safety-related heat exchangers).
Show that as-found results are recorded, evaluated, and appropriately dispositioned such that
the as-left condition is acceptable.
-1- Enclosure
Design Documents
Copies of vendor data sheets and design basis data for the selected heat exchangers.
The design margin of the heat exchangers (the maximum heat transfer rate achievable at
design basis conditions compared to the vendors design heat transfer rate).
Copies of calculations that show the heat exchangers will meet their design basis requirements
under worst case conditions. Calculation for the maximum allowable number of tubes plugged
and how many tubes are currently plugged.
For room coolers, calculations of the maximum room temperature under accident conditions and
determination that the coolers can maintain less than the maximum temperature under design
conditions.
Documents that show that the heat exchangers have been evaluated for potential water
hammer.
Calculations related to the instrument uncertainties of the instruments used during testing.
Corrective action reports concerning cavitation noise in any heat exchanger system.
The most recent audit report of heat exchanger testing and cleaning.
The most recent service water flow balance test results, both as-found and as-left.
Documents for the Ultimate Heat Sink
Testing documents or other equivalent methods that verify the performance of the ultimate heat
sink and its components.
Calculations that show there is sufficient water capacity for the required 30-day supply.
Procedures or work orders that show there is monitoring and trending of sediment build-up.
Procedures for periodic performance monitoring of heat transfer capability.
Procedures for the periodic performance of the ultimate heat sink structural integrity.
Documents that verify adequate chemistry monitoring to ensure adequate pH, calcium, etc. are
maintained.
Documents that explain the operation of the ultimate heat sink.
A description of the clean up system between the water supply and the ultimate heat sink.
If elements of the ultimate heat sink can freeze during cold weather, documentation or
calculations to show that there will still be sufficient water to meet design conditions under the
worst case freeze conditions.
-2- Enclosure
A description of the sump pump that circulates the water in the ultimate heat sink during freeze
conditions, and documentation which show that the sump pump and valves are safety-related.
Calculations of the maximum allowable amount of silt that can be in the ultimate heat sink, and
any condition reports written in the past three years about problems with silt.
List of condition reports, with descriptions, of problems with the ultimate heat sink for the past
three years.
Corrective Action Documents
List of corrective action documents, with descriptions, for the past 3 years for all safety-related
heat exchangers
Inspector Contact Information:
Senior Reactor Inspector
817-200-1270
greg.pick@nrc.gov
Mailing Address:
US NRC Region IV
Attn: Greg Pick
1600 East Lamar Blvd.
Arlington, TX 76011-4511
-3- Enclosure