ML17202U685
| ML17202U685 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 07/21/2017 |
| From: | Vijay Meghani NRC/RGN-III/DRS/EB1 |
| To: | Bryan Hanson Exelon Generation Co, Exelon Nuclear |
| References | |
| IR 2017004 | |
| Download: ML17202U685 (9) | |
See also: IR 05000454/2017004
Text
UNITED STATES
NUCLEAR REGULATORY COMMISSION
REGION III
2443 WARRENVILLE RD. SUITE 210
LISLE, IL 60532-4352
July 21, 2017
Mr. Bryan C. Hanson
Senior VP, Exelon Generation Company, LLC
President and CNO, Exelon Nuclear
4300 Winfield Road
Warrenville, IL 60555
SUBJECT: BYRON STATION, UNIT 2NOTIFICATION OF NRC BASELINE
INSPECTION AND REQUEST FOR INFORMATION; INSPECTION
REPORT 05000454/2017004; 05000455/2017004
Dear Mr. Hanson:
On October, 2, 2017, the U. S. Nuclear Regulatory Commission (NRC) will begin the Baseline
Inservice Inspection (Procedure 71111.08). This onsite inspection is scheduled to be performed
October 2, 2017, through October 20, 2017.
Experience has shown that this inspection is resource intensive both for the NRC inspector and
your staff. In order to minimize the impact to your onsite resources, and to ensure a productive
inspection for both sides, we have enclosed a request for documents needed for this inspection.
These documents have been divided into two groups.
The first group identifies information necessary to ensure that the inspector is adequately
prepared. The second group identifies the information the inspector will need upon arrival at the
site. 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.
We have discussed the schedule for inspection activities with your staff and understand that
our regulatory contact for this inspection will be Ms. Z. Cox, of your organization. If there are
any questions about this inspection or the material requested, please contact the lead inspector
Mr. V. Meghani at 630-829-975,1 or via e-mail at Vijay.Meghani@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.
B. Hanson -2-
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/
Vijay Meghani, Reactor Inspector
Engineering Branch 1
Division of Reactor Safety
Docket Nos. 50-454; 50-455
Enclosure:
Baseline Inservice Inspection
Document Request
cc: Distribution via LISTSERV
B. Hanson -3-
Letter to Bryan C. Hanson from Vijay Meghani dated July 21, 2017
SUBJECT: BYRON STATION, UNIT 2NOTIFICATION OF NRC BASELINE
INSPECTION AND REQUEST FOR INFORMATION; INSPECTION
REPORT 05000454/2017004; 05000455/2017004
DISTRIBUTION:
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Cynthia Pederson
DRPIII
DRSIII
ADAMS Accession Number ML17202U685
OFFICE RIII RIII RIII RIII
NAME VMeghani:cl
DATE 07/21/17
OFFICIAL RECORD COPY
BASELINE INSERVICE INSPECTION DOCUMENT REQUEST
Inspection Dates: October 2, 2017, through October 20, 2017
Inspection Procedures: IP 71111-08, Inservice Inspection
Lead Inspector: Vijay Meghani, DRS
630-829-9751
Vijay.Meghani@nrc.gov
A. Information for the In-Office Preparation Week
The following information is requested as an (electronic copy CD ROM if possible) by
September 25, 2017, 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 a list of additional documents needed onsite from your
staff. We request that the specific items selected from the lists be available and ready
for review on the first day of inspection. The following information is applicable to the
outage Unit unless otherwise indicated. If you have any questions regarding this
information, please call the inspector as soon as possible.
1. For the upcoming outage, a detailed schedule and description of:
a. non-destructive examinations (NDEs) planned for Class 1 and 2 Systems
and containment, performed as part of your American Society of Mechanical
Engineers (ASME) Code Inservice Inspection (ISI) Program (include edition
and addenda of Code committed to), and NDEs planned for other systems
performed as part of a Risk-Informed ISI Program, or other augmented
inspection programs (e.g., ASME Code Case N-770-1 examination of
dissimilar metal welds and examinations to meet an industry initiative). For
each weld examination, include the weld identification number, description
of weld (component name), category, class, type of exam and procedure
number, and date of examination;
b. reactor vessel upper head examinations required by Title 10 of the Code of
Federal Regulations (CFR), Part 50.55a(g)(6)(ii)(D) and Code Case N-729-1;
c. steam generator (SG) tube inspection and repair activities for the upcoming
outage or SG secondary side examinations;1 and
d. welding on Code Class 1, 2, or 3 components.
2. A copy of the NDE procedures, SG eddy current examination (ECT) acquisition
and analysis procedures, and welding procedures used to perform the activities
identified in Item A.1 (including NDE calibration and flaw characterization/sizing
1
Note 1- If no SG examinations are planned for this outage, please confirm when the next SG examination will occur
and no further information is required for the items identified above requesting SG related information.
Enclosure
procedures and Welding Procedure Qualification Records). For ultrasonic
examination procedures qualified in accordance with Appendix VIII, of Section XI
of the ASME Code, provide documentation supporting the procedure qualification
(e.g., the Electric Power Research Institute (EPRI) performance demonstration
qualification summary sheets). For SG tube ECT this includes the acquisition
and analysis procedures.
3. A copy of ASME Section XI, Code Relief Requests applicable to the
examinations identified in Item A.1.
4. A copy of the 10-year ISI Program showing those required exams scheduled to
be performed this outage, and those which have been completed.
5. A list identifying NDE reports (ultrasonic, radiography, magnetic particle, or dye
penetrant), which have identified relevant indications on Code Class 1 and 2
Systems since the beginning of the last refueling outage.
6. List with short description of the welds in Code Class 1 and 2 Systems, which
have been fabricated due to component repair/replacement activities since the
beginning of the last refueling outage and identify the system, weld number, and
reference applicable documentation (e.g., NIS-2 forms with definitions of system
and component acronyms).
7. If reactor vessel weld examinations required by the ASME Code are scheduled to
occur during the inspection period, provide a detailed description of the welds to
be examined, and the extent of the planned examination.
8. List with description of ISI and SG-related issues such as piping or SG tube
degradation or damage (e.g., cracks, wall thinning, wear, microbiologically
induced corrosion) or errors identified during piping/SG tube examinations that
have been entered into your corrective action system since the beginning of the
last refueling outage. Also, include a list of corrective action records associated
with foreign material introduced/identified in the reactor vessel, primary coolant
system, SG or feed systems since the beginning of the last refueling outage.
9. Copy of any 10 CFR Part 21 reports applicable to your structures, systems, or
components within the scope of Section XI of the ASME Code that have been
identified since the beginning of the last refueling outage.
10. Copy of SG history documentation given to vendors performing ECT of the SGs
during the upcoming outage.1
11. Copy of procedure containing screening criteria used for selecting tubes for in-
situ pressure testing and the procedure to be used for in-situ pressure testing.1
12. Copy of previous outage SG tube operational assessment completed following
ECT of the SGs (provide this document even if no SG ECT is planned for current
outage).
1 Note 1- If no SG examinations are planned for this outage, please confirm when the next SG examination will occur
and no further information is required for the items identified above requesting SG related information.
2
13. Copy of most recent SG Degradation Assessment (provide this document even if
no SG ECT is planned for current outage).
14. Copy of most recent SG Condition Monitoring Assessments.1
15. Copy of the document defining the planned SG ECT scope (e.g., 100 percent of
unrepaired tubes with bobbin probe and 20 percent sample of hot leg expansion
transition regions with rotating probe) and identify the scope expansion criteria,
which will be applied. Also identify and describe any deviations in this scope or
expansion criteria from the EPRI Guidelines.1
16. Copy of the document describing the ECT acquisition equipment to be applied
including ECT probe types. Also identify the extent of planned tube examination
coverage with each probe type (e.g., rotating probe - 0.080 inches, 0.115 inches
pancake coils and mid-range + point coil applied at the top-of-tube-sheet plus
3 inches to minus 12 inches).
17. Provide procedures with guidance/instructions for identifying (e.g., physically
locating the tubes that require repair) and plugging SG tubes.1
18. Identify and quantify any SG tube leakage experienced during the previous
operating cycle. Also provide documentation identifying which SG was leaking
and corrective actions completed or planned for this condition.
19. Copy of current calculations for EDY, and RIY as defined in Code Case N-729-1
that establish the volumetric and visual examination frequency for the reactor
vessel head and J-groove welds.
20. Point of contact information (name and site number) for the following activities:
a. ISI - Site and vendor leads
b. Boric Acid Inspections and Evaluations
c. Reactor Vessel Head Inspection - Site and vendor leads
d. SG Inspection - Site and vendor leads
B. Onsite Information to be Provided to the Inspector on the First Day of the
Inspection (e.g., Following the Entrance Meeting). Please Provide Hard Copies
(e.g., Paper Records) of the Following Documents.
1. For welds selected by the inspector from Item A.1.d and A.6 above, provide
copies of the following documents:
a. Document of the weld number and location (e.g., system, train, branch);
b. Document with a detail of the weld construction (e.g., drawing);
1 Note 1- If no SG examinations are planned for this outage, please confirm when the next SG examination will occur
and no further information is required for the items identified above requesting SG related information.
3
c. Applicable portions of the Design Specification and applicable Code of
construction for the weldment (e.g., B31.1 or ASME Section III);
d. Applicable Code Edition and Addenda for weld procedure qualification;
e. Applicable weld procedure specifications and weld data sheets used to
fabricate the welds;
f. Copies of procedure qualification records supporting the weld procedure
specifications;
g. Copies of welders performance qualification records;
h. Copies of mechanical test reports identified in the weld procedure
qualification records above;
i. Copies of the nonconformance reports for the selected welds;
j. Access to radiographs and equipment to view radiographs of the selected
welds;
k. ASME Code Section XI repair replacement plan and reconciliation for
replacement components/materials;
l. Certified Material Test Reports for replacement pressure boundary
materials; and
m. Copies of the NDE required by the construction Code and the pre-service
examination records required by the ASME Code Section XI for the
selected welds.
2. For the ISI-related corrective action issues selected by the inspector from
Item A.8 above, provide a copy of the corrective actions and supporting
documentation.
3. For the NDE reports with relevant indications on Code Class 1 and 2 Systems
selected by the inspector from Item A.5 above, provide a copy of the examination
records and associated corrective action documents. Updated schedules for
Item A.1 (including schedule showing contingency repair plans if available).
4. Copy of the procedures which govern the scope, equipment used, and
implementation of the inspections required to identify boric acid leakage from
systems and components above the vessel head.
5. Copy of:
a. Engineering evaluations/assessments of boric acid-related deposits and
associated wastage or corrosion for safety significant components; and
b. Corrective action records for coolant leakage including boric acid deposits
on safety-related components identified since the beginning of the last
refueling outage.
4
6. Copy of the plant procedures used to perform inspections to identify reactor
coolant system leaks or boric acid deposits and the procedures for resolution of
leaks or boric acid deposits.
7. Fabrication Drawings (D size) of the reactor vessel welds (including vessel head
8. J-groove welds) if any are to be examined during the outage. Also provide any
drawings used by NDE vendors to locate these welds.
9. Copy of the documents which demonstrate that the procedures to be used
for volumetric examination of the reactor vessel head penetration J-groove
welds were qualified by a blind demonstration test in accordance with
10. Copy of volumetric, surface and visual examination records for the prior
inspection of the reactor vessel head and head penetration J-groove welds.
11. Provide a copy of the EPRI Examination Technique Specification Sheets and
vendor related documents, which support qualification of the ECT probes to be
used during the upcoming SG tube inspections.1
12. Provide a copy of the guidance to be followed if a loose part or foreign material is
identified in the SGs.1
13. Identify the types of SG tube repair processes which will be implemented for
defective SG tubes (including any U.S. Nuclear Regulatory Commission reviews/
evaluation/approval of this repair process). Provide the flaw depth sizing criteria
to be applied for ECT indications identified in the SG tubes.1
14. Copy of document describing actions to be taken if a new SG tube degradation
mechanism is identified.1
15. Provide document which defines the scope of SG secondary side examinations
(if any are planned) and identify site specific operational history related to
degradation of SG secondary side components (if any).
16. Provide procedures with guidance/instructions for identifying (e.g., physically
locating the tubes that require repair) and plugging SG tubes.1
17. Provide copies of the following standards at the onsite U.S. Nuclear Regulatory
Commission inspection location for the duration of the inspection:
a. Sections V, IX, and XI of the ASME Code with Editions applicable to the
ISI Program and the Repair/Replacement Program;
b. Copy of the performance demonstration initiative (PDI) generic
procedures with the latest applicable revisions that support site qualified
ultrasonic examination of piping welds and components (e.g., PDI-UT-1,
PDI-UT-2, PDI-UT-3, PDI-UT-10 etc.);
1 Note 1- If no SG examinations are planned for this outage, please confirm when the next SG examination will occur
and no further information is required for the items identified above requesting SG related information.
5
c. EPRI and industry standards referenced in the site procedures used
to perform the SG tube ET, which includes EPRI documents: SG
Examination Guidelines, SG Integrity Assessment Guidelines, SG
In-Situ Pressure Test Guidelines;1 and
d. Boric Acid Corrosion Guidebook Revision 1 - EPRI Technical
Report 1000975.
18. Provide training (e.g., Scaffolding, Fall Protection, Foreign Material Exclusion)
if required to access the non-destructive examinations selected by the inspector
for observation.
If you have questions regarding the information requested, please contact the lead inspector.
1
Note 1- If no SG examinations are planned for this outage, please confirm when the next SG examination will occur
and no further information is required for the items identified above requesting SG related information.
6