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{{Adams
#REDIRECT [[IR 05000275/2010005]]
| number = ML102950324
| issue date = 10/21/2010
| title = Notification of NRC Triennial Heat Exchanger Inspection 05000275-10-005 & 05000323-10-005
| author name = Farnholtz T
| author affiliation = NRC/RGN-IV/DRS/EB-1
| addressee name = Conway J
| addressee affiliation = Pacific Gas & Electric Co
| docket = 05000275, 05000323
| license number = DPR-080, DPR-082
| contact person =
| document type = Letter, Inspection Plan
| page count = 7
}}
See also: [[see also::IR 05000275/2010005]]
 
=Text=
{{#Wiki_filter:UNITED STATES
                            NU C LE AR RE G UL AT O RY C O M M I S S I O N
                                              R E GI ON I V
                                  612 EAST LAMAR BLVD , SU I TE 400
                                    AR LI N GTON , TEXAS 76011-4125
                                      October 21, 2010
John T. Conway
Senior Vice President-Energy &
Supply and Chief Nuclear Officer
Pacific Gas and Electric Company
Diablo Canyon Power Plant
77 Beale Street, Mail Code B32
San Francisco, CA 94105
SUBJECT: DIABLO CANYON- NOTIFICATION OF NRC TRIENNIAL HEAT
            EXCHANGER INSPECTION 05000275/2010005;O5000323/2010005
Dear Mr. Conway:
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: December 6, 2010 - December 10, 2010
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 November 15, 2010. 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 Michael McCoy of your
licensing organization. If there are any questions about this inspection or the material
requested, please contact the inspector, Paula Goldberg, at 817-860-8168 or by
 
Pacific Gas and Electric Company          -2-
email, paula.goldberg@nrc.gov. 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 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: 50-275; 50-323
License: DPR-80; DPR-82
Enclosure: Heat Exchanger/Heat Sink
  Inspection Documentation Request
cc w/enclosure:
Sierra Club Santa Lucia Chapter
ATTN: Andrew Christie
P.O. Box 15755
San Luis Obispo, CA 93406
Jane Swanson
San Luis Obispo
Mothers for Peace
P.O. Box 3608
San Luis Obispo, CA 93403
James Grant, County Administrative Officer
San Luis Obispo County Board of
Supervisors
1055 Monterey Street, Suite D430
San Luis Obispo, CA 93408
Truman Burns\Robert Kinosian
California Public Utilities Commission
505 Van Ness Ave., Rm. 4102
San Francisco, CA 94102
 
Pacific Gas and Electric Company        -3-
Jennifer Post, Esq.
Pacific Gas & Electric Co.
77 Beale Street, Room 2496
Mail Code B30A
San Francisco, CA 94120
Gary Butner
Chief, Radiologic Health Branch
California Department of Public Health 3
P.O. Box 997414 (MS 7610)
Sacramento, CA 95899-7414
The City Editor of The Tribune
3825 South Higuera Street
P.O. Box 112
San Luis Obispo, CA 93406-0112
James D. Boyd, Commissioner
California Energy Commission
1516 Ninth Street (MS 31)
Sacramento, CA 95814
James R. Becker, Site Vice President
Pacific Gas and Electric Company
Diablo Canyon Nuclear Plant
P.O. Box 56, Mail Station 104/6/601
Avila Beach, CA 93424
Jennifer Tang
Field Representative
United States Senator Barbara Boxer
1700 Montgomery Street, Suite 240
San Francisco, CA 94111
Chief, Technological Hazards Branch
FEMA Region IX
1111 Broadway, Suite 1200
Oakland, CA 94607-4052
 
Pacific Gas and Electric Company          -4-
Electronic distribution by RIV:
Regional Administrator (Elmo.Collins@nrc.gov)
Deputy Regional Administrator (Chuck.Casto@nrc.gov)
DRP Director (Kriss.Kennedy@nrc.gov)
DRP Deputy Director (Anton.Vegel@nrc.gov)
DRS Director (Roy.Caniano@nrc.gov)
DRS Deputy Director (Troy.Pruett@nrc.gov)
Senior Resident Inspector (Michael.Peck@nrc.gov)
Resident Inspector (Tony.Brown@nrc.gov)
Acting Branch Chief, DRP/B (Don.Allen@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)
Reactor Inspector, DRP/B (Christie.Denissen@nrc.gov)
DC Administrative Assistant (Agnes.Chan@nrc.gov)
Public Affairs Officer (Victor.Dricks@nrc.gov)
Public Affairs Officer (Lara.Uselding@nrc.gov)
Project Manager (Fred.Lyon@nrc.gov)
Branch Chief, DRS/TSB (Michael.Hay@nrc.gov)
RITS Coordinator (Marisa.Herrera@nrc.gov)
Regional Counsel (Karla.Fuller@nrc.gov)
Acting Regional Counsel (David.Roth@nrc.gov)
Congressional Affairs Officer (Jenny.Weil@nrc.gov)
OEMail Resource
OEDO RIV Coordinator (Geoffrey.Miller@nrc.gov)
File located:_R:/Reactors/2010/DC2010005 RFI-PAG                                      ML
SUNSI Rev Compl. X Yes No ADAMS                  X Yes No      Reviewer Initials
Publicly Avail          X Yes No Sensitive          Yes X No    Sens. Type Initials
RIV: DRS/EB1/RI          C: EB1
PGoldberg TRF for        TFarnholtz
/RA/ by email            /RA/
10/21/2010              10/21/2010
OFFICIAL RECORD COPY                                  T=Telephone      E=E-mail      F=Fax
 
      Heat Exchanger/Heat Sink Inspection Documentation Request
The following heat exchangers/heat sinks have been selected for inspection:
    *  Component cooling water heat exchangers
    *  Containment fan coolers
    *  Ultimate heat sink
Please provide the following documentation prior to the onsite inspection week,
preferably no later than November 22, 2010 .
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
Cleaning procedures with 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 which 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
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 which shows there is sufficient water capacity for the required 30-day
supply
Procedure or work order that show there is monitoring and trending of sediment build-up
Procedure for periodic performance monitoring of heat transfer capability
Procedures for the periodic performance of the ultimate heat sink structural integrity
Document that verifies adequate chemistry monitoring to ensure adequate pH, calcium,
etc. are maintained
Documents that explains the operation of the ultimate heat sink
                                      -2-                                Enclosure
 
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
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:
Paula Goldberg
Reactor Inspector
817-860-8168
paula.goldberg@nrc.gov
Mailing Address:
US NRC Region IV
Attn: Paula Goldberg
612 East Lamar Blvd., Suite 400
Arlington, TX 76011-4125
                                          -3-                              Enclosure
}}

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