ML110310602
| ML110310602 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 01/31/2011 |
| From: | Eric Duncan Region 3 Branch 3 |
| To: | Pacilio M Exelon Generation Co, Exelon Nuclear |
| References | |
| IR-10-005 | |
| Download: ML110310602 (54) | |
See also: IR 05000454/2010005
Text
UNITED STATES
NUCLEAR REGULATORY COMMISSION
REGION III
2443 WARRENVILLE ROAD, SUITE 210
LISLE, IL 60532-4352
January 31, 2011
Mr. Michael J. Pacilio
Senior Vice President, Exelon Generation Company, LLC
President and Chief Nuclear Officer (CNO), Exelon Nuclear
4300 Winfield Road
Warrenville IL 60555
SUBJECT: BYRON STATION, UNITS 1 AND 2 INTEGRATED INSPECTION
REPORT 05000454/2010-005; 05000455/2010-005; 07200068/2010003-2
Dear Mr. Pacilio:
This refers to the inspection completed on December 31, 2010 at your Byron Station, Units 1
and 2. The enclosed report presents the results of this inspection which were discussed on
January 14, 2011, with Mr. B. Adams, and other members of your staff.
During this inspection, the NRC staff examined activities conducted under your license as they
relate to public health and safety to confirm compliance with the Commission's rules and
regulations and with the conditions of your license. Within these areas, the inspection consisted
of selected examination of procedures and representative records, observations of activities,
and interviews with personnel.
Based on the results of this inspection, the NRC has determined that two Severity Level IV
violations of NRC requirements occurred. The NRC has also identified one issue that was
evaluated under the risk significance determination process as having very low safety
significance (Green). The NRC has determined that one violation is associated with the
issue. These violations are being treated as Non-Cited Violations (NCVs), consistent with
Section 2.3.2 of the Enforcement Policy. These NCVs are described in the subject inspection
report.
If you contest the subject or severity of these NCVs, you should provide a response within
30 days of the date of this inspection report, with the basis for your denial, to the U.S. Nuclear
Regulatory Commission, ATTN: Document Control Desk, Washington, DC 20555-0001, with a
copy to the Regional Administrator, U.S. Nuclear Regulatory Commission - Region III,
2443 Warrenville Road, Suite 210, Lisle, IL 60532-4352; the Director, Office of Enforcement,
U.S. Nuclear Regulatory Commission, Washington, DC 20555-0001; and the Resident Inspector
Office at the Byron Station. In addition, if you disagree with the cross-cutting aspect assigned to
any finding in this report, you should provide a response within 30 days of the date of this
inspection report, with the basis for your disagreement, to the Regional Administrator,
Region III, and the NRC Resident Inspector at the Byron Station.
M. Pacilio -2-
In accordance with 10 CFR 2.390 of the NRC's "Rules of Practice," a copy of this letter, its
enclosure, and your response (if any) will be available electronically for public inspection in the
NRC Public Document Room or from the Publicly Available Records System (PARS)
component of NRC's document system (ADAMS). ADAMS is accessible from the NRC Website
at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).
Sincerely,
/RA/
Eric R. Duncan, Chief
Branch 3
Division of Reactor Projects
Docket Nos. 50-454; 50-455;72-068
Enclosure: Inspection Report 05000454/2010005; 05000455/2010005; 07200068/2010003
w/Attachment: Supplemental Information
cc w/encl: Distribution via ListServ
U.S. NUCLEAR REGULATORY COMMISSION
REGION III
Docket Nos: 05000454; 05000455; 07200068
Report No: 05000454/2010005; 05000455/2010005;
07200068/2010003
Licensee: Exelon Generation Company, LLC
Facility: Byron Station, Units 1 and 2
Location: Byron, IL
Dates: October 1, 2010, through December 31, 2010
Inspectors: B. Bartlett, Senior Resident Inspector
J. Robbins, Resident Inspector
M. Bielby, Senior Operations Engineer
R. Edwards, Reactor Engineer
M. Learn, Reactor Engineer
B. Palagi, Senior Operations Engineer
L. Rodriguez, Reactor Engineer
C. Tilton, Senior Reactor Engineer
M. Jones, Reactor Engineer
C. Thompson, Resident Inspector,
Illinois Department of Emergency Management
Approved by: E. Duncan, Chief
Branch 3
Division of Reactor Projects
Enclosure
TABLE OF CONTENTS
SUMMARY OF FINDINGS ........................................................................................................... 1
REPORT DETAILS ....................................................................................................................... 3
Summary of Plant Status ........................................................................................................... 3
1. REACTOR SAFETY ....................................................................................................... 3
1R01 Adverse Weather Protection (71111.01) ............................................................. 3
1R04 Equipment Alignment (71111.04) ........................................................................ 4
1R05 Fire Protection (71111.05) ................................................................................... 5
1R06 Flooding (71111.06) ............................................................................................. 7
1R07 Annual Heat Sink Performance (71111.07) ......................................................... 7
1R07 Heat Sink Performance (71111.07T) ................................................................... 8
1R12 Maintenance Effectiveness (71111.12) ............................................................. 15
1R13 Maintenance Risk Assessments and Emergent Work Control (71111.13) ........ 16
1R15 Operability Evaluations (71111.15) .................................................................... 16
1R18 Plant Modifications (71111.18) .......................................................................... 17
1R19 Post Maintenance Testing (71111.19) ............................................................... 18
2. RADIATION SAFETY ................................................................................................... 20
2RS1 Radiological Hazard Assessment and Exposure Controls (71124.01) .............. 20
2RS6 Radioactive Gaseous and Liquid Effluent Treatment (71124.06) ...................... 21
4. OTHER ACTIVITIES (OA) ............................................................................................ 22
4OA1 Performance Indicator Verification (71151) ....................................................... 22
4OA2 Identification and Resolution of Problems (71152) ............................................ 26
4OA3 Followup of Events and Notices of Enforcement Discretion (71153) ................. 28
4OA5 Other Activities ................................................................................................... 29
SUPPLEMENTAL INFORMATION ............................................................................................... 1
KEY POINTS OF CONTACT..................................................................................................... 1
LIST OF ITEMS OPENED, CLOSED AND DISCUSSED ......................................................... 1
LIST OF DOCUMENTS REVIEWED......................................................................................... 2
Enclosure
SUMMARY OF FINDINGS
IR 05000454/2010005, 05000455/2010005; 07200068/2010003; Byron Station, Units 1 & 2;
10/01/10 - 12/31/10; Routine Integrated Inspection Report; Heat Sink Performance; Operation
of an Independent Spent Fuel Storage Installation at Operating Plants
This report covers a 3-month period of inspection by resident inspectors and announced
baseline inspections by regional inspectors. Two Severity Level IV Violations and one Green
finding were identified by the inspectors. The Severity Level IV Violations and Green finding
were considered non-cited violations (NCVs) of NRC regulations. The significance of most
findings is indicated by their color (Green, White, Yellow, Red) using Inspection Manual Chapter
(IMC) 0609, Significance Determination Process (SDP). Assigned cross-cutting aspects were
determined using IMC 0310, Components Within the Cross Cutting Areas. Findings for which
the SDP does not apply may be Green or be assigned a severity level after NRC management
review. The NRCs program for overseeing the safe operation of commercial nuclear power
reactors is described in NUREG-1649, Reactor Oversight Process, Revision 4, dated
December 2006.
A. NRC-Identified and Self-Revealed Findings
Cornerstone: Mitigating Systems
- Green. A finding of very low safety significance and an associated NCV of
10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings,
was identified by the inspectors when licensee personnel failed to establish specific
instructions for inspecting the River Screen House and Essential Service Water
Cooling Tower. Specifically, the procedure that provided guidance for inspecting
these structures lacked specific instructions on how to detect concrete degradation,
erosion, corrosion and biological fouling. The licensee entered this issue into their
corrective action program and initiated procedure revisions to provide further
direction for identifying and documenting the degradation of these structures and
related components.
The performance deficiency was determined to be more than minor because if left
uncorrected it would have the potential to lead to a more significant safety concern.
The finding screened as of very low safety significance because it was a qualification
deficiency confirmed not to result in a loss of operability or functionality. Specifically,
a qualitative assessment of historic surveillance reports found the documented
results acceptable. The inspectors determined that this finding did not represent
current licensee performance and therefore no cross-cutting aspect was assigned.
(Section 1R07.1)
Miscellaneous Matters
- Severity Level IV: The inspectors identified a Severity Level IV NCV of very low
safety significance of 10 CFR 72.150, "Instruction, Procedures, and Drawings."
Specifically, the licensee failed to have procedures in place to ensure that the design
basis peak fuel cladding limit would not be exceeded during canister loading
1 Enclosure
operations. The licensee entered this issue into their corrective action program and
revised the procedure to provide monitoring criteria.
The violation was determined to be of more than minor significance using IMC 0612,
Power Reactor Inspection Reports, Appendix E, Examples of Minor Issues,
Example 2c, in that the procedures failed to incorporate thermal acceptance criteria
established by the Holtec Final Safety Analysis Report and that the failure to
incorporate thermal acceptance criteria was repetitive. Although the violation
contributed to the likelihood of peak fuel cladding temperatures exceeding the safety
limit, subsequent analysis by the licensee determined that fuel cladding temperature
limits were not exceeded. The violation screened as having very low safety
significance. (Section 4OA5.2)
- Severity Level IV: The inspectors identified a Severity Level IV NCV of very low
safety significance of 10 CFR 72.150, "Instructions, Procedures, and Drawings."
Specifically, the licensee failed to have procedures in place to ensure that heavy
loads were operated safely in the Fuel Handling Building. The licensee entered this
issue into their corrective action program and revised the procedure to provide
monitoring criteria.
The violation was determined to be of more than minor significance because if left
uncorrected, it could lead to a more significant safety concern. Consistent with the
guidance in Section 2.6.D of the NRC Enforcement Manual, if a violation does not fit
an example in the Enforcement Policy Violation Examples, it should be assigned a
severity level: (1) commensurate with its safety significance; and (2) informed by
similar violations addressed in the Violation Examples. The violation screened as
having very low safety significance. (Section 4OA5.2)
B. Licensee-Identified Violations
None
2 Enclosure
REPORT DETAILS
Summary of Plant Status
Unit 1 operated at or near full power during the inspection period.
Unit 2 operated at or near full power during the inspection period.
1. REACTOR SAFETY
Cornerstones: Initiating Events, Mitigating Systems, and Barrier Integrity
1R01 Adverse Weather Protection (71111.01)
.2 Winter Seasonal Readiness Preparations
a. Inspection Scope
The inspectors conducted a review of the licensees preparations for winter conditions to
verify that the plants design features and implementation of procedures were sufficient
to protect mitigating systems from the effects of adverse weather. Documentation for
selected risk-significant systems was reviewed to ensure that these systems would
remain functional when challenged by inclement weather. During the inspection, the
inspectors focused on plant specific design features and the licensees procedures used
to mitigate or respond to adverse weather conditions. Additionally, the inspectors
reviewed the Updated Final Safety Analysis Report (UFSAR) and performance
requirements for systems selected for inspection, and verified that operator actions were
appropriate as specified by plant specific procedures. Cold weather protection, such as
heat tracing and area heaters, was verified to be in operation where applicable. The
inspectors also reviewed corrective action program (CAP) items to verify that the
licensee was identifying adverse weather issues at an appropriate threshold and
entering them into their CAP in accordance with station corrective action procedures.
Documents reviewed are listed in the Attachment to this report. The inspectors reviews
focused specifically on the following plant systems due to their risk significance or
susceptibility to cold weather issues:
- Station Heating System (SH);
- Auxiliary Building Ventilation System (VA); and
- Essential Service Water Valve House Ventilation System (VH).
This inspection constituted one winter seasonal readiness preparations sample as
defined in Inspection Procedure (IP) 71111.01-05.
b. Findings
No findings of significance were identified.
3 Enclosure
.3 Readiness for Impending Adverse Weather Condition - Severe Thunderstorm Watch
and High Wind Conditions
a. Inspection Scope
Since thunderstorms with potential tornados and high winds were forecast in the vicinity
of the facility on November 22, 2010, and high winds in the area on October 27, 2010,
the inspectors reviewed the licensees overall preparations/protection for the expected
weather conditions. On October 27, 2010, and on November 19, 2010, the inspectors
walked down the plant outside areas, including the main transformers in addition to the
licensees emergency alternating current (AC) power systems, because their
safety-related functions could be affected or required as a result of high winds or
tornado-generated missiles or the loss of offsite power. The inspectors evaluated the
licensee staffs preparations against the sites procedures. During the inspection, the
inspectors focused on plant-specific design features and the licensees procedures used
to respond to specified adverse weather conditions. The inspectors also toured the plant
grounds to look for any loose debris that could become missiles during a tornado. The
inspectors evaluated operator staffing and accessibility of controls and indications for
those systems required to control the plant. Additionally, the inspectors reviewed the
UFSAR and performance requirements for systems selected for inspection, and verified
that operator actions were appropriate as specified by plant specific procedures. The
inspectors also reviewed a sample of CAP items to verify that the licensee identified
adverse weather issues at an appropriate threshold and dispositioned them through the
CAP in accordance with station corrective action procedures. Documents reviewed are
listed in the Attachment to this report.
This inspection constituted two readiness for impending adverse weather condition
samples as defined in IP 71111.01-05.
b. Findings
No findings of significance were identified.
1R04 Equipment Alignment (71111.04)
.1 Quarterly Partial System Walkdowns
a. Inspection Scope
The inspectors performed partial system walkdowns of the following risk-significant
systems:
- Unit 1 Train A Centrifugal Charging and Safety Injection following Maintenance
on the Room Cooler;
- Unit 1 Train A Emergency Diesel Generator (EDG) Air Start System during
Train B Maintenance Outage;
- Unit 1 Train A Containment Spray Valve Line-Up during EDG Train B
Maintenance Outage;
- Unit 2 Train B Essential Service Water (SX) while Unit 2 Train A SX was Out of
Service for Planned Maintenance; and
4 Enclosure
Planned Maintenance.
The inspectors selected these systems based on their risk significance relative to the
Reactor Safety Cornerstones at the time they were inspected. The inspectors attempted
to identify any discrepancies that could impact the function of the system, and, therefore,
potentially increase risk. The inspectors reviewed applicable operating procedures,
system diagrams, UFSAR, Technical Specification (TS) requirements, outstanding work
orders, condition reports, and the impact of ongoing work activities on redundant trains
of equipment in order to identify conditions that could have rendered the systems
incapable of performing their intended functions. The inspectors also walked down
accessible portions of the systems to verify system components and support equipment
were aligned correctly and operable. The inspectors examined the material condition of
the components and observed operating parameters of equipment to verify that there
were no obvious deficiencies. The inspectors also verified that the licensee had properly
identified and resolved equipment alignment problems that could cause initiating events
or impact the capability of mitigating systems or barriers and entered them into the CAP
with the appropriate significance characterization. Documents reviewed are listed in the
Attachment.
These activities constituted five partial system walkdown samples as defined in
IP 71111.04-05.
b. Findings
No findings of significance were identified.
1R05 Fire Protection (71111.05)
.1 Routine Resident Inspector Tours (71111.05Q)
a. Inspection Scope
The inspectors conducted fire protection walkdowns which were focused on availability,
accessibility, and the condition of firefighting equipment in the following risk significant
plant areas:
- Auxiliary Building, Electrical Penetration Areas 426' and 414' Elevations (Fire
Zone 11.6-2, 11.5A-2 and 11.5B-2);
- Auxiliary Building, General Area 426' Elevation (Fire Zone 11.6-0 South);
- Auxiliary Building, General Area North 364 Elevation (Fire Zone 11.3-0 North);
- Unit 1 Train A Centrifugal Charging Pump Room (Fire Zone 11.3D-1); and
- Auxiliary Building, General Area North 383 Elevation (Fire Zone 11.4-0 North).
The inspectors reviewed areas to assess if the licensee had implemented a fire
protection program that adequately controlled combustibles and ignition sources within
the plant, effectively maintained fire detection and suppression capability, maintained
passive fire protection features in good material condition, and implemented adequate
compensatory measures for out-of-service, degraded or inoperable fire protection
equipment, systems, or features in accordance with the licensees fire plan. The
inspectors selected fire areas based on their overall contribution to internal fire risk as
5 Enclosure
documented in the plants Individual Plant Examination of External Events with later
additional insights, their potential to impact equipment which could initiate or mitigate a
plant transient, or their impact on the plants ability to respond to a security event. Using
the documents listed in the Attachment, the inspectors verified that fire hoses and
extinguishers were in their designated locations and available for immediate use; that
fire detectors and sprinklers were unobstructed; that transient material loading was
within the analyzed limits; and fire doors, dampers, and penetration seals appeared to
be in satisfactory condition. The inspectors also verified that minor issues identified
during the inspection were entered into the licensees CAP. Documents reviewed are
listed in the Attachment to this report.
These activities constituted five quarterly fire protection inspection samples as defined in
IP 71111.05-05.
b. Findings
No findings of significance were identified.
.2 Annual Fire Protection Drill Observation (71111.05A)
a. Inspection Scope
On October 20, 2010, the inspectors observed a fire brigade activation for a simulated
fire on the Unit 2 West Main Power Transformer, and on November 30, 2010, the
inspectors observed a portion of a fire brigade activation of a simulated fire in the
Condensate Polisher Room. Based on these observations, the inspectors evaluated the
readiness of the plant fire brigade to fight fires. The inspectors verified that the licensee
staff identified deficiencies; openly discussed them in a self-critical manner at the drill
debrief, and took appropriate corrective actions. Specific attributes evaluated were:
- proper wearing of turnout gear and self-contained breathing apparatus;
- proper use and layout of fire hoses;
- employment of appropriate fire fighting techniques;
- sufficient firefighting equipment brought to the scene;
- effectiveness of fire brigade leader communications, command, and control;
- search for victims and propagation of the fire into other plant areas;
- smoke removal operations;
- utilization of pre-planned strategies;
- adherence to the pre-planned drill scenario; and
- drill objectives.
Documents reviewed are listed in the Attachment to this report.
These activities constituted two annual fire protection inspection samples as defined in
IP 71111.05-05.
b. Findings
No findings of significance were identified.
6 Enclosure
1R06 Flooding (71111.06)
a. Inspection Scope
The inspectors reviewed selected risk important plant design features and licensee
procedures intended to protect the plant and its safety-related equipment from internal
flooding events. The inspectors reviewed flood analyses and design documents,
including the UFSAR, engineering calculations, and abnormal operating procedures to
identify licensee commitments. Documents reviewed are listed in the Attachment to this
report. In addition, the inspectors reviewed licensee drawings to identify areas and
equipment that may be affected by internal flooding caused by the failure or
misalignment of nearby sources of water, such as the fire suppression or the circulating
water systems. The inspectors also reviewed the licensees corrective action documents
with respect to past flood-related items identified in the corrective action program to
verify the adequacy of the corrective actions. The inspectors performed a walkdown of
the following plant area to assess the adequacy of watertight doors and verify drains and
sumps were clear of debris and were operable, and that the licensee complied with its
commitments:
- Flood Doors Associated with the Unit 1 Diesel Oil Storage Tank Rooms
This inspection constituted one internal flooding sample as defined in IP 71111.06-05.
b. Findings
No findings of significance were identified.
1R07 Annual Heat Sink Performance (71111.07)
.1 Heat Sink Performance
a. Inspection Scope
The inspectors reviewed the licensees testing of Unit 2 Train A SX Pump Oil Cooler and
Cubicle Coolers to verify that potential deficiencies did not mask the licensees ability to
detect degraded performance, to identify any common cause issues that had the
potential to increase risk, and to ensure that the licensee was adequately addressing
problems that could result in initiating events that would cause an increase in risk. The
inspectors reviewed the licensees observations as compared against acceptance
criteria, the correlation of scheduled testing and the frequency of testing, and the impact
of instrument inaccuracies on test results. The inspectors also verified that test
acceptance criteria considered differences between test conditions, design conditions,
and testing conditions. Documents reviewed are listed in the Attachment to this report.
This annual heat sink performance inspection constituted one sample as defined in
IP 71111.07-05.
7 Enclosure
b. Findings
No findings of significance were identified.
1R07 Heat Sink Performance (71111.07T)
.1 Triennial Review of Heat Sink Performance
a. Inspection Scope
The inspectors reviewed operability determinations, completed surveillances,
vendor manual information, associated calculations, performance test results and
cooler inspection results associated with the 1A EDG jacket water cooler and 1B
auxiliary feed pump oil cooler. These heat exchangers/coolers were chosen based
on their risk-significance in the licensees probabilistic safety analysis, their important
safety-related mitigating system support functions, their operating history, and their
relatively low margin.
For the1A EDG jacket water cooler and the 1B auxiliary feed pump oil cooler the
inspectors verified the methods used to inspect and clean heat exchangers were
consistent with as-found conditions identified and expected degradation trends and
industry standards. The inspectors verified the licensees inspection and cleaning
activities utilized acceptance criteria generated via methods consistent with industry
standards, and that the as-found results were recorded, evaluated, and appropriately
dispositioned. The inspectors also verified that the corrective actions program contained
guidance requiring characterization and evaluation of any foreign materials identified in
the heat exchanger. The inspectors confirmed evaluations were performed to ensure
the heat exchanger would remain capable of performing its intended design function.
The licensee initiated action-tracking items to generate heat exchanger specific tube
plugging and blocking calculations as an enhancement to the heat exchanger monitoring
program for the 1B AF lube oil cooler.
In addition, the inspectors verified the condition and operation of the 1A EDG jacket
water cooler and the 1B AF pump oil cooler were consistent with design assumptions in
heat transfer calculations and Proto HX calculations and as described in the UFSAR.
This included verification that the number of plugged tubes was within pre-established
limits based on capacity and heat transfer assumptions. In addition, eddy current test
reports and visual inspection records were reviewed to determine the structural integrity
of the heat exchanger.
The inspectors verified the performance of ultimate heat sinks (UHSs) and safety-related
service water systems and their subcomponents such as piping, intake screens, pumps,
valves, etc., by tests or other equivalent methods to ensure availability and accessibility
to the in-plant cooling water systems.
The inspectors reviewed the results of the licensees inspection of the UHS and the
River Screen House (RSH). At Byron, the UHS is comprised of the essential service
water cooling tower (SXCT) basin. The inspectors verified that identified settlement or
movement indicating a potential loss of structural integrity was appropriately evaluated
and dispositioned by the licensee. The inspectors also performed walkdowns of
8 Enclosure
accessible portions of components in the SXCT basin to verify the licensees
assessment on structural integrity and component functionality.
The inspectors verified that the licensees inspection of the SXCT basin and the RSH
was comprehensive and of significant depth. The inspectors also verified the licensee
ensured sufficient reservoir capacity by trending and removing debris and sediment
buildup. In addition, the inspectors confirmed that sediments were maintained at an
acceptable level and that water level instruments were functional and routinely
monitored in the UHS. This included the review of the licensees periodic monitoring and
trending of sediment build-up and heat transfer capability calculations.
The inspectors verified the licensees ability to ensure functionality during adverse
weather conditions. The inspectors also verified that the licensee had adequately
protected against silt introduction during periods of low flow or low level.
The inspectors reviewed available licensee testing and inspections results, licensee
disposition of any active thru wall pipe leaks, and the history of thru wall pipe leakage to
identify any adverse trends since the last NRC inspection. For the chemical volume
control system, a closed-cooling system, the inspectors reviewed related documents and
interviewed the system engineer, to identify adverse make-up trends that could be
indicative of excessive leakage out of the closed system. For inaccessible piping, the
inspectors reviewed the licensee's pipe testing, inspection, or monitoring program to
verify structural integrity, and ensured that any leakage or degradation has been
appropriately identified and dispositioned by the licensee. The inspectors verified that
the periodic piping inspection program adequately detected and corrected protective
coating failure, corrosion and erosion. The inspectors verified that the licensee
adequately monitored and resolved any adverse trends for pumps by reviewing the
operational history and in-service testing (IST) vibration monitoring results.
In addition, the inspectors reviewed condition reports related to the heat exchangers and
heat sink performance issues to verify that the licensee had an appropriate threshold for
identifying issues and to evaluate the effectiveness of the corrective actions. Documents
reviewed are listed in the Attachment to this report.
These inspection activities constituted three heat sink inspection samples as defined in
IP 71111.07-05.
b. Findings
(1) Inadequate Instructions for the Inspection of the River Screen House and Essential
Introduction: A finding of very low safety significance (Green) and an associated NCV of
10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures and Drawings, was
identified by the inspectors when licensee personnel failed to establish specific
instructions for inspecting the RSH and SXCT. Specifically, the procedure that provided
guidance for inspecting these structures lacked specific instructions on how to detect
concrete degradation, erosion, corrosion and biological fouling.
Description: On November 24, 2010, the inspectors identified that the licensee failed to
establish adequate instructions in surveillance procedures used to inspect the RSH and
SXCT.
9 Enclosure
In response to Generic Letter (GL) 89-13, Service Water Problems Affecting
Safety-Related Equipment, the licensee committed to inspect the RSH and the SXCT
basin to monitor, trend and evaluate any degradation resulting from erosion, corrosion,
silt buildup and biological fouling.
The purpose section of procedure 0BMSR SX-5, Inspection of River Screen House and
Essential Service Water Cooling Tower Basins (CM-4), states: This procedure
provides guidance for inspection of River Screen House (RSH) Intake Structure and the
Essential Service Water Cooling Tower (SXCT) Basins for concrete degradation, silt
buildup, erosion, corrosion, and biological fouling. However, the inspectors noted the
procedure did not include specific guidance on how to accomplish this purpose. For
example, the inspectors noted the procedure contained Step 4.2.3, which required
inspection of the SX makeup pump, but did not provide guidance on how to accomplish
it or what specific sections of the pump and the basins to inspect. In addition, the
procedure did not provide any instructions for what entails degradation of concrete
structures or components by erosion, corrosion and biological fouling mechanisms. In
addition, the procedure did not provide instructions on when or how to document these
types of degradations. The inspectors were concerned that the lack of written
instructions to identify and record the as-found condition of the RSH and the SXCT basin
could result in the licensees inability to properly assess the effect of erosion, corrosion,
biological fouling and concrete degradation on these structures and related components.
As a corrective action, the licensee initiated Issue Report (IR) 1144584 to revise
Procedure 0BMSR SX-5, and provide specific instructions on how to accomplish the
purpose of the procedure. These instructions will include criteria for what to look for and
how and what to document during these inspections related to component and structural
degradation by erosion, corrosion and biological fouling.
Analysis: The inspectors determined that the licensees failure to establish adequate
instructions in surveillance procedures used to inspect the RSH and SXCT was contrary
to the requirements of 10 CFR Part 50, Appendix B, Criterion V, and was a performance
deficiency.
The performance deficiency was determined to be more than minor because if left
uncorrected it would have the potential to lead to a more significant safety concern.
Specifically, since the licensees procedures did not contain instructions to properly
inspect the RSH and SXCT, the potential existed for an unacceptable degradation of
these structures or related components to go undetected affecting essential service
water operability. Inoperable essential service water trains would place the plant at
increased risk for core damage, which would affect the safety of an operating reactor.
The inspectors determined the finding could be evaluated using the Significance
Determination Process (SDP) in accordance with IMC 0609, Significance Determination
Process, Attachment 0609.04, Phase 1 - Initial Screening and Characterization of
Findings, Table 4a for the Mitigating System Cornerstone. The finding screened as of
very low safety significance (Green) because the finding was a qualification deficiency
confirmed not to result in a loss of operability or functionality. Specifically, the licensee
performed a history review of the surveillance reports and found the documented results
acceptable. A qualitative assessment of the inspections established reasonable
assurance that they did not represent a loss of operability. The inspectors did not have
further concerns.
10 Enclosure
The inspectors determined that this finding did not represent current licensee
performance and therefore no cross-cutting aspect was assigned.
Enforcement: Title 10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures,
and Drawings, required, in part, that activities affecting quality shall be prescribed by
documented instructions, procedures, or drawings, of a type appropriate to the
circumstances.
Contrary to the above, as of November 24, 2010, the licensee did not establish RSH and
SXCT basin surveillance procedural requirements appropriate to the circumstances.
Specifically, procedure 0BMSR SX-5, Inspection of River Screen House and Essential
Service Water Cooling Tower Basins (CM-4), the procedure used to inspect these
structures, was not appropriate for the circumstances. The procedure lacked
instructions on detecting or recording concrete degradation, erosion, corrosion and
biological fouling. Without these instructions, the effect of any degradation on system
operability could not be evaluated. Because this violation was of very low safety
significance and it was entered into the licensees CAP as IR 1144584, this violation is
being treated as an NCV, consistent with Section 2.3.2 of the NRC Enforcement Policy.
(NCV 05000454/2010005-01; 05000455/2010005-01, Inadequate Instructions for the
Inspection of the River Screen House and Essential Service Water Cooling Tower)
1R11 Licensed Operator Requalification Program (71111.11)
.1 Facility Operating History (71111.11B)
a. Inspection Scope
The inspectors reviewed the plants operating history from October 26 through
October 27, 2010, to identify operating experience that was expected to be addressed
by the Licensed Operator Requalification Training (LORT) program. The inspector
verified that the identified operating experience had been addressed by the facility
licensee in accordance with the stations approved Systems Approach to Training (SAT)
program to satisfy the requirements of 10 CFR 55.59(c). Documents reviewed are listed
in the Attachment to this report.
b. Findings
No findings of significance were identified.
.2 Licensee Requalification Examinations
a. Inspection Scope
The inspectors performed an inspection of the licensees LORT test/examination
program for compliance with the stations SAT program which would satisfy the
requirements of 10 CFR 55.59(c)(4). The reviewed operating examination material
consisted of two operating tests, each containing two dynamic simulator scenarios and
six job performance measures (JPMs). The written examinations reviewed consisted of
two written examinations; each exam contained 30 questions. The inspectors reviewed
the annual requalification operating test and biennial written examination material to
evaluate general quality, construction, and difficulty level. The inspectors assessed the
11 Enclosure
level of examination material duplication from week-to-week during the current year
operating test. The examiners assessed the amount of written examination material
duplication from week-to-week for the written examination administered in 2010. The
inspectors reviewed the methodology for developing the examinations, including the
LORT program 2-year sample plan, probabilistic risk assessment insights, previously
identified operator performance deficiencies, and plant modifications. Documents
reviewed are listed in the Attachment to this report.
b. Findings
No findings of significance were identified.
.3 Licensee Administration of Requalification Examinations
a. Inspection Scope
The inspectors observed the administration of a requalification operating test to
assess the licensees effectiveness in conducting the test to ensure compliance with
10 CRF 55.59(c)(4). The inspectors evaluated the performance of two crews in parallel
with the facility evaluators during two dynamic simulator scenarios and evaluated various
licensed crew members concurrently with facility evaluators during the administration of
several JPMs. The inspectors assessed the facility evaluators ability to determine
adequate crew and individual performance using objective, measurable standards. The
inspectors observed the training staff personnel administer the operating test, including
conducting pre-examination briefings, evaluations of operator performance, and
individual and crew evaluations upon completion of the operating test. The inspectors
evaluated the ability of the simulator to support the examinations. A specific evaluation
of simulator performance was conducted and documented in the section below titled,
Conformance with Simulator Requirements Specified in 10 CFR 55.46. Documents
reviewed are listed in the Attachment to this report.
b. Findings
No findings of significance were identified.
.4 Examination Security
a. Inspection Scope
The inspectors observed and reviewed the licensees overall licensed operator
requalification examination security program related to examination physical security
(e.g., access restrictions and simulator considerations) and integrity (e.g., predictability
and bias) to verify compliance with 10 CFR 55.49, Integrity of Examinations and Tests.
The inspectors also reviewed the facility licensees examination security procedure, any
corrective actions related to past or present examination security problems at the facility,
and the implementation of security and integrity measures (e.g., security agreements,
sampling criteria, bank use, and test item repetition) throughout the examination
process. Documents reviewed are listed in the Attachment to this report.
12 Enclosure
b. Findings
No findings of significance were identified.
.5 Licensee Training Feedback System
a. Inspection Scope
The inspectors assessed the methods and effectiveness of the licensees processes for
revising and maintaining its LORT Program up to date, including the use of feedback
from plant events and industry experience information. The inspectors reviewed the
licensees quality assurance oversight activities, including licensee training department
self-assessment reports. The inspectors evaluated the licensees ability to assess the
effectiveness of its LORT program and their ability to implement appropriate corrective
actions. This evaluation was performed to verify compliance with 10 CFR 55.59(c) and
the licensees SAT program. Documents reviewed are listed in the Attachment to this
report.
b. Findings
No findings of significance were identified.
.6 Licensee Remedial Training Program
a. Inspection Scope
The inspectors assessed the adequacy and effectiveness of the remedial training
conducted since the previous biennial requalification examinations and the training from
the current examination cycle to ensure that they addressed weaknesses in licensed
operator or crew performance identified during training and plant operations. The
inspectors reviewed remedial training procedures and individual remedial training plans.
This evaluation was performed in accordance with 10 CFR 55.59(c) and with respect to
the licensees SAT program. Documents reviewed are listed in the Attachment to this
report.
b. Findings
No findings of significance were identified.
.7 Conformance with Operator License Conditions
a. Inspection Scope
The inspectors reviewed the facility and individual operator licensees' conformance with
the requirements of 10 CFR Part 55. The inspectors reviewed the facility licensee's
program for maintaining active operator licenses and to assess compliance with
10 CFR 55.53(e) and (f). The inspectors reviewed the procedural guidance and the
process for tracking on-shift hours for licensed operators and which control room
positions were granted watch-standing credit for maintaining active operator licenses.
The inspectors reviewed the facility licensee's LORT program to assess compliance with
the requalification program requirements as described by 10 CFR 55.59(c). Additionally,
medical records for 10 licensed operators were reviewed for compliance with
13 Enclosure
10 CFR 55.21 and 55.53(i). Documents reviewed are listed in the Attachment to this
report.
b. Findings
No findings of significance were identified.
.8 Conformance with Simulator Requirements Specified in 10 CFR 55.46
a. Inspection Scope
The inspectors assessed the adequacy of the licensees simulation facility (simulator) for
use in operator licensing examinations and for satisfying experience requirements as
prescribed in 10 CFR 55.46, Simulation Facilities. The inspectors also reviewed a
sample of simulator performance test records (i.e., transient tests, malfunction tests,
steady state tests, and core performance tests), simulator discrepancies, and the
process for ensuring continued assurance of simulator fidelity in accordance with
10 CFR 55.46. The inspectors reviewed and evaluated the discrepancy process to
ensure that simulator fidelity was maintained. Open simulator discrepancies were
reviewed for importance relative to the impact on 10 CFR 55.45 and 55.59 operator
actions as well as on nuclear and thermal hydraulic operating characteristics. The
inspectors conducted interviews with members of the licensees simulator staff about the
configuration control process and completed the IP 71111.11, Appendix C, checklist to
evaluate whether or not the licensees plant-referenced simulator was operating
adequately as required by 10 CFR 55.46(c) and (d). Documents reviewed are listed in
the Attachment to this report.
b. Findings
No findings of significance were identified.
.9 Resident Inspector Quarterly Review (71111.11Q)
a. Inspection Scope
On October 26 and October 27, 2010, the inspectors observed two crews of licensed
operators in the plants simulator during licensed operator requalification examinations to
verify that operator performance was adequate, evaluators were identifying and
documenting crew performance problems, and training was being conducted in
accordance with licensee procedures. The inspectors evaluated the following areas:
- licensed operator performance;
- crews clarity and formality of communications;
- ability to take timely actions in the conservative direction;
- prioritization, interpretation, and verification of annunciator alarms;
- correct use and implementation of abnormal and emergency procedures;
- control board manipulations;
- oversight and direction from supervisors; and
- ability to identify and implement appropriate TS actions and Emergency Plan
actions and notifications.
14 Enclosure
The crews performance in these areas was compared to pre-established operator action
expectations and successful critical task completion requirements. Documents reviewed
are listed in the Attachment to this report.
This inspection constituted one quarterly licensed operator requalification program
sample as defined in IP 71111.11-05.
b. Findings
No findings of significance were identified.
1R12 Maintenance Effectiveness (71111.12)
.1 Routine Quarterly Evaluations (71111.12Q)
a. Inspection Scope
The inspectors evaluated degraded performance issues involving the following
risk-significant systems:
Connection.
The inspectors reviewed events such as where ineffective equipment maintenance had
resulted in valid or invalid automatic actuations of engineered safeguards systems and
independently verified the licensee's actions to address system performance or condition
problems in terms of the following:
- implementing appropriate work practices;
- identifying and addressing common cause failures;
- scoping of systems in accordance with 10 CFR 50.65(b) of the maintenance rule;
- characterizing system reliability issues for performance;
- charging unavailability for performance;
- trending key parameters for condition monitoring;
- ensuring 10 CFR 50.65(a)(1) or (a)(2) classification or re-classification; and
- verifying appropriate performance criteria for structures, systems, and
components (SSCs)/functions classified as (a)(2) or appropriate and adequate
goals and corrective actions for systems classified as (a)(1).
The inspectors assessed performance issues with respect to the reliability, availability,
and condition monitoring of the system. In addition, the inspectors verified maintenance
effectiveness issues were entered into the CAP with the appropriate significance
characterization. Documents reviewed are listed in the Attachment to this report.
This inspection constituted one quarterly maintenance effectiveness samples as defined
in IP 71111.12-05.
b. Findings
No findings of significance were documented in this inspection report. Additional follow-
up and regulatory conclusions are the subject of NRC IR 05000455/2011011.
15 Enclosure
1R13 Maintenance Risk Assessments and Emergent Work Control (71111.13)
.1 Maintenance Risk Assessments and Emergent Work Control
a. Inspection Scope
The inspectors reviewed the licensee's evaluation and management of plant risk for the
maintenance and emergent work activities affecting risk-significant and safety-related
equipment listed below to verify that the appropriate risk assessments were performed
prior to removing equipment for work:
- Work Activities during the Week of November 8 Focusing on Unit 2 Train A SX
Outage; and
- Work Activities during the Week of November 29 for Unit 1 Emergent Direct
Current (DC) Bus 112 Battery Cell Replacement and Planned Unit 2 Safety
Injection Pump work window.
These activities were selected based on their potential risk significance relative to the
Reactor Safety Cornerstones. As applicable for each activity, the inspectors verified that
risk assessments were performed as required by 10 CFR 50.65(a)(4) and were accurate
and complete. When emergent work was performed, the inspectors verified that the
plant risk was promptly reassessed and managed. The inspectors reviewed the scope
of maintenance work, discussed the results of the assessment with the licensee's
probabilistic risk analyst or shift technical advisor, and verified plant conditions were
consistent with the risk assessment. The inspectors also reviewed TS requirements and
walked down portions of redundant safety systems, when applicable, to verify risk
analysis assumptions were valid and applicable requirements were met.
These maintenance risk assessments and emergent work control activities constituted
two samples as defined in IP 71111.13-05.
b. Findings
No findings of significance were identified.
1R15 Operability Evaluations (71111.15)
.1 Operability Evaluations
a. Inspection Scope
The inspectors reviewed the following issues:
- Unit 2 Train A Pressurizer Safety Valve Due to Identified but Unexpected Leakby;
- Unit 2 Train A SX Foreign Material Discovered within the Lube Oil Pump; and
- Unit 1 Train B Auxiliary Feedwater Pump Oil Cooler Piping Configuration Error.
The inspectors selected these potential operability issues based on the risk significance
of the associated components and systems. The inspectors evaluated the technical
adequacy of the evaluations to ensure that TS operability was properly justified and the
subject component or system remained available such that no unrecognized increase in
16 Enclosure
risk occurred. The inspectors compared the operability and design criteria in the
appropriate sections of the TS and USAR to the licensees evaluations to determine
whether the components or systems were operable. Where compensatory measures
were required to maintain operability, the inspectors determined whether the measures
in place would function as intended and were properly controlled. The inspectors
determined, where appropriate, compliance with bounding limitations associated with the
evaluations. Additionally, the inspectors reviewed a sampling of corrective action
documents to verify that the licensee was identifying and correcting any deficiencies
associated with operability evaluations. Documents reviewed are listed in the
Attachment to this report.
This operability inspection constituted three samples as defined in IP 71111.15-05.
b. Findings
No findings of significance were identified.
1R18 Plant Modifications (71111.18)
.1 Temporary Plant Modifications
a. Inspection Scope
The inspectors reviewed the following temporary modifications:
- Unit 2 Temporarily Disconnect Both Sudden Pressure Relays for Main Power
Transformer 2MP01E due to Ground Associated with Relay 63-1; and
- Unit 1 Battery Bank 112 Installation of Jumper for Degraded Cell.
The inspectors compared the temporary configuration changes and associated
10 CFR 50.59 screening and evaluation information against the design basis, the
UFSAR, and the TS, as applicable, to verify that the modification did not affect the
operability or availability of the affected system(s). The inspectors also compared the
licensees information to operating experience information to ensure that lessons learned
from other utilities had been incorporated into the licensees decision to implement the
temporary modification. The inspectors, as applicable, performed field verifications to
ensure that the modifications were installed as directed; the modifications operated as
expected; modification testing adequately demonstrated continued system operability,
availability, and reliability; and that operation of the modifications did not impact the
operability of any interfacing systems. Lastly, the inspectors discussed the temporary
modification with operations, engineering, and training personnel to ensure that the
individuals were aware of how extended operation with the temporary modification in
place could impact overall plant performance. Documents reviewed are listed in the
Attachment to this report.
This inspection constituted two temporary modification samples as defined in
IP 71111.18-05.
b. Findings
No findings of significance were identified.
17 Enclosure
1R19 Post Maintenance Testing (71111.19)
.1 Post Maintenance Testing
a. Inspection Scope
The inspectors reviewed the following post-maintenance activities to verify that
procedures and test activities were adequate to ensure system operability and
functional capability:
- Unit 1 Train A Chemical Volume Control Pump Room Cooling Fan Following
Motor Replacement;
- Unit 1 Train B EDG Following Planned Maintenance Work Window;
- Unit 1 Battery Bank 112 Installation of Jumper for Degraded Cell;
- Unit 2 Train B Auxiliary Feedwater Pump Following Maintenance;
- Unit 2 Train A Centrifugal Charging Pump Room Cooler Following Maintenance;
- Unit 2 Circuit Card Controlling Auctioneered High Average Temperature
Selection.
These activities were selected based upon the structure, system, or component's ability
to impact risk. The inspectors evaluated these activities for the following (as applicable):
the effect of testing on the plant had been adequately addressed; testing was adequate
for the maintenance performed; acceptance criteria were clear and demonstrated
operational readiness; test instrumentation was appropriate; tests were performed as
written in accordance with properly reviewed and approved procedures; equipment was
returned to its operational status following testing (temporary modifications or jumpers
required for test performance were properly removed after test completion); and test
documentation was properly evaluated. The inspectors evaluated the activities against
TS, the UFSAR, 10 CFR Part 50 requirements, licensee procedures, and various
NRC generic communications to ensure that the test results adequately ensured that the
equipment met the licensing basis and design requirements. In addition, the inspectors
reviewed corrective action documents associated with post-maintenance tests to
determine whether the licensee was identifying problems and entering them in the CAP
and that the problems were being corrected commensurate with their importance to
safety. Documents reviewed are listed in the Attachment to this report.
This inspection constituted seven post-maintenance testing samples as defined in
IP 71111.19-05.
b. Findings
No findings of significance were identified.
18 Enclosure
1R22 Surveillance Testing (71111.22)
.1 Surveillance Testing
a. Inspection Scope
The inspectors reviewed the test results for the following activities to determine whether
risk-significant systems and equipment were capable of performing their intended safety
function and to verify testing was conducted in accordance with applicable procedural
and TS requirements:
- Unit 2 Local Leakage Rate Test for Primary Containment Purge Supply Isolation
Valves; and
- Unit 2 Train A Containment Spray American Society of Mechanical Engineers
(ASME) Surveillance Meeting IST Program Requirements.
The inspectors observed in-plant activities and reviewed procedures and associated
records to determine the following:
- did preconditioning occur;
- were the effects of the testing adequately addressed by control room personnel
or engineers prior to the commencement of the testing;
- were acceptance criteria clearly stated, demonstrated operational readiness, and
consistent with the system design basis;
- plant equipment calibration was correct, accurate, and properly documented;
- as-left setpoints were within required ranges; and the calibration frequency were
in accordance with TSs, the USAR, procedures, and applicable commitments;
- measuring and test equipment calibration was current;
- test equipment was used within the required range and accuracy; applicable
prerequisites described in the test procedures were satisfied;
- test frequencies met TS requirements to demonstrate operability and reliability;
tests were performed in accordance with the test procedures and other
applicable procedures; jumpers and lifted leads were controlled and restored
where used;
- test data and results were accurate, complete, within limits, and valid;
- test equipment was removed after testing;
- where applicable for inservice testing activities, testing was performed in
accordance with the applicable version of Section XI, ASMEs code, and
reference values were consistent with the system design basis;
- where applicable, test results not meeting acceptance criteria were addressed
with an adequate operability evaluation or the system or component was
declared inoperable;
- where applicable for safety-related instrument control surveillance tests,
reference setting data were accurately incorporated in the test procedure;
- where applicable, actual conditions encountering high resistance electrical
contacts were such that the intended safety function could still be accomplished;
- prior procedure changes had not provided an opportunity to identify problems
encountered during the performance of the surveillance or calibration test;
- equipment was returned to a position or status required to support the
performance of its safety functions; and
19 Enclosure
- all problems identified during the testing were appropriately documented and
dispositioned in the CAP.
Documents reviewed are listed in the Attachment to this report.
This inspection constituted one inservice testing sample and one containment isolation
valve inspection sample as defined in IP 71111.22, Sections -02 and -05.
b. Findings
No findings of significance were identified.
2. RADIATION SAFETY
Cornerstones: Occupational and Public Radiation Safety
2RS1 Radiological Hazard Assessment and Exposure Controls (71124.01)
The inspection activities supplement those documented in Inspection
Report 05000454/2010003; 0500455/2010003, and constitute one complete
sample as defined in IP 71124.01-05.
.1 Contamination and Radioactive Material Control (02.04)
a. Inspection Scope
The inspectors selected several sealed sources from the licensees inventory records
and assessed whether the sources were accounted for and verified to be intact.
The inspectors evaluated whether any transactions, since the last inspection, involving
nationally tracked sources were reported in accordance with 10 CFR 20.2207.
b. Findings
No findings of significance were identified.
.2 Radiological Hazards Control and Work Coverage (02.05)
a. Inspection Scope
The inspectors examined the licensees physical and programmatic controls for highly
activated or contaminated materials (nonfuel) stored within spent fuel and other storage
pools. The inspectors assessed whether appropriate controls (i.e., administrative and
physical controls) were in place to preclude inadvertent removal of these materials from
the pool.
b. Findings
No findings of significance were identified.
20 Enclosure
2RS6 Radioactive Gaseous and Liquid Effluent Treatment (71124.06)
This inspection constituted a partial sample as defined in IP 71124.06-05.
.1 Inspection Planning and Program Reviews (02.01)
Event Report and Effluent Report Reviews
a. Inspection Scope
The inspectors reviewed the radiological effluent release reports issued since the last
inspection to determine if the reports were submitted as required by the Offsite Dose
Calculation Manual/TSs. The inspectors reviewed anomalous results, unexpected
trends, or abnormal releases identified by the licensee for further inspection to determine
if they were evaluated, were entered in the corrective action program, and were
adequately resolved.
b. Findings
No findings of significance were identified.
Offsite Dose Calculation Manual and Updated Final Safety Analysis Report Review
a. Inspection Scope
The inspectors reviewed UFSAR descriptions of the radioactive effluent monitoring
systems, treatment systems, and effluent flow paths so they can be evaluated during
inspection walkdowns.
The inspectors reviewed changes to the Offsite Dose Calculation Manual made by the
licensee since the last inspection against the guidance in NUREG-1301 and 0133, and
Regulatory Guides 1.109, 1.21 and 4.1. When differences were identified, the
inspectors reviewed the technical basis or evaluations of the change during the onsite
inspection, to determine whether they were technically justified and maintain effluent
releases as-low-as-is-reasonably-achievable.
b. Findings
No findings of significance were identified.
Procedures, Special Reports, and Other Documents
a. Inspection Scope
The inspectors reviewed copies of licensee and third party (independent) evaluation
reports of the effluent monitoring program since the last inspection to gather insights into
the licensees program and aid in selecting areas for inspection review (smart sampling).
b. Findings
No findings of significance were identified.
21 Enclosure
4. OTHER ACTIVITIES (OA)
4OA1 Performance Indicator Verification (71151)
.1 Mitigating Systems Performance Index - Emergency Alternating Current Power System
a. Inspection Scope
The inspectors sampled licensee submittals for the Mitigating Systems Performance
Index (MSPI) - Emergency AC Power System performance indicator (PI) for Unit 1 and
Unit 2 for the period from October 1, 2009 through September 30, 2010. To determine
the accuracy of the PI data reported during those periods, PI definitions and guidance
contained in the Nuclear Energy Institute (NEI) Document 99-02, Regulatory
Assessment Performance Indicator Guideline, Revision 6, dated October 2009, was
used. The inspectors reviewed the licensees operator narrative logs, MSPI derivation
reports, issue reports, event reports and NRC Integrated Inspection Reports for the
period of October 1, 2009, through September 30, 2010, to validate the accuracy of the
submittals. The inspectors reviewed the MSPI component risk coefficient to determine if
it had changed by more than 25 percent in value since the previous inspection, and if so,
whether the change was in accordance with applicable NEI guidance. The inspectors
also reviewed the licensees issue report database to determine if any problems had
been identified with the PI data collected or transmitted for this indicator. Documents
reviewed are listed in the Attachment to this report.
This inspection constituted two MSPI emergency AC power system samples as defined
in IP 71151-05.
b. Findings
No findings of significance were identified.
.2 Mitigating Systems Performance Index - High Pressure Injection Systems
a. Inspection Scope
The inspectors sampled licensee submittals for the MSPI - High Pressure Injection
Systems PI for Unit 1 and Unit 2 for the period from October 1, 2009, through
September 30, 2010. To determine the accuracy of the PI data reported during those
periods, PI definitions and guidance contained in NEI 99-02, Regulatory Assessment
Performance Indicator Guideline, Revision 6, dated October 2009, was used. The
inspectors reviewed the licensees operator narrative logs, issue reports, MSPI
derivation reports, event reports, and NRC Integrated Inspection Reports for the period
of October 1, 2009, through September 30, 2010, to validate the accuracy of the
submittals. The inspectors reviewed the MSPI component risk coefficient to determine if
it had changed by more than 25 percent in value since the previous inspection, and if so,
whether the change was in accordance with applicable NEI guidance. The inspectors
also reviewed the licensees issue report database to determine if any problems had
been identified with the PI data collected or transmitted for this indicator. Documents
reviewed are listed in the Attachment to this report.
22 Enclosure
This inspection constituted two MSPI high pressure injection system samples as defined
in IP 71151-05.
b. Findings
No findings of significance were identified.
.3 Mitigating Systems Performance Index - Heat Removal System
a. Inspection Scope
The inspectors sampled licensee submittals for the MSPI - Heat Removal System PI for
Unit 1 and Unit 2, for the period from October 1, 2009, through September 30, 2010. To
determine the accuracy of the PI data reported during those periods, PI definitions and
guidance contained in NEI 99-02, Regulatory Assessment Performance Indicator
Guideline, Revision 6, dated October 2009, was used. The inspectors reviewed the
licensees operator narrative logs, issue reports, event reports, MSPI derivation reports,
and NRC Integrated Inspection Reports for the period of October 1, 2009, through
September 30, 2010, to validate the accuracy of the submittals. The inspectors
reviewed the MSPI component risk coefficient to determine if it had changed by more
than 25 percent in value since the previous inspection, and if so, whether the change
was in accordance with applicable NEI guidance. The inspectors also reviewed the
licensees issue report database to determine if any problems had been identified with
the PI data collected or transmitted for this indicator. Documents reviewed are listed in
the Attachment to this report.
This inspection constituted two MSPI heat removal system samples as defined in
IP 71151-05.
b. Findings
No findings of significance were identified.
.4 Mitigating Systems Performance Index - Residual Heat Removal System
a. Inspection Scope
The inspectors sampled licensee submittals for the MSPI - Residual Heat Removal
System PI for Unit 1 and Unit 2, for the period from October 1, 2009, through
September 30, 2010. To determine the accuracy of the PI data reported during those
periods, PI definitions and guidance contained in NEI 99-02, Regulatory Assessment
Performance Indicator Guideline, Revision 6, dated October 2009, was used. The
inspectors reviewed the licensees operator narrative logs, issue reports, MSPI
derivation reports, event reports, and NRC Integrated Inspection Reports for the period
of October 1, 2009, through September 30, 2010, to validate the accuracy of the
submittals. The inspectors reviewed the MSPI component risk coefficient to determine if
it had changed by more than 25 percent in value since the previous inspection, and if so,
whether the change was in accordance with applicable NEI guidance. The inspectors
also reviewed the licensees issue report database to determine if any problems had
been identified with the PI data collected or transmitted for this indicator. Documents
reviewed are listed in the Attachment to this report.
23 Enclosure
This inspection constituted two MSPI residual heat removal system samples as defined
in IP 71151-05.
b. Findings
No findings of significance were identified.
.5 Mitigating Systems Performance Index - Cooling Water Systems
a. Inspection Scope
The inspectors sampled licensee submittals for the MSPI - Cooling Water Systems PI
Unit 1 and Unit 2, for the period from October 1, 2009, through September 30, 2010. To
determine the accuracy of the PI data reported during those periods, PI definitions and
guidance contained in NEI 99-02, Regulatory Assessment Performance Indicator
Guideline, Revision 6, dated October 2009, was used. The inspectors reviewed the
licensees operator narrative logs, issue reports, MSPI derivation reports, event reports,
and NRC Integrated Inspection Reports for the period of October 1, 2009 through
September 30, 2010, to validate the accuracy of the submittals. The inspectors
reviewed the MSPI component risk coefficient to determine if it had changed by more
than 25 percent in value since the previous inspection, and if so, whether the change
was in accordance with applicable NEI guidance. The inspectors also reviewed the
licensees issue report database to determine if any problems had been identified with
the PI data collected or transmitted for this indicator and none were identified.
Documents reviewed are listed in the Attachment to this report.
This inspection constituted two MSPI cooling water system samples as defined in
IP 71151-05.
b. Findings
No findings of significance were identified.
.6 Reactor Coolant System Specific Activity
a. Inspection Scope
The inspectors sampled licensee submittals for the Reactor Coolant System (RCS)
Specific Activity PI for the period from July 2009 through September 2010. The
inspectors used PI definitions and guidance contained in the NEI 99-02, Regulatory
Assessment Performance Indicator Guideline, Revision 6, dated October 2009, to
determine the accuracy of the PI data reported during those periods. The inspectors
reviewed the licensees RCS chemistry samples, TS requirements, issue reports, event
reports, and NRC Integrated IRs for the period of July 2009 through September 2010 to
determine if indicator results were accurately reported. Documents reviewed are listed
in the Attachment to this report
This inspection constituted two reactor coolant systems specific activity sample as
defined in IP 71151-05.
24 Enclosure
b. Findings
No findings of significance were identified.
.7 Occupational Exposure Control Effectiveness
a. Inspection Scope
The inspectors sampled licensee submittals for the Occupational Radiological
Occurrences PI for the period of July 2009 through September 2010. The inspectors
used PI definitions and guidance contained in the NEI 99-02, Regulatory Assessment
Performance Indicator Guideline, Revision 6, dated October 2009, to determine the
accuracy of the PI data reported during those periods. The inspectors reviewed
electronic dosimetry dose rate and accumulated dose alarm and dose reports and the
dose assignments for any intakes that occurred for selected dates between July 2009
and September 2010 to determine if indicator results were accurately reported. The
inspectors also conducted walk downs of numerous locked high and very high radiation
area entrances to determine the adequacy of the controls in place for these areas.
Documents reviewed are listed in the Attachment to this report.
This inspection constituted one occupational radiological occurrences sample as defined
in IP 71151-05.
b. Findings
No findings of significance were identified.
.8 Radiological Effluent Technical Specification/Offsite Dose Calculation Manual
Radiological Effluent Occurrences
a. Inspection Scope
The inspectors sampled licensee submittals for the Radiological Effluent Technical
Specification (RETS)/Offsite Dose Calculation Manual (ODCM) Radiological Effluent
Occurrences performance indicator for the period of July 2009 through September 2010.
The inspectors used PI definitions and guidance contained in the NEI 99-02, Regulatory
Assessment Performance Indicator Guideline, Revision 6, dated October 2009, to
determine the accuracy of the PI data reported during those periods. The inspectors
reviewed the licensees issue report database and selected individual reports generated
since this indicator was last reviewed to identify any potential occurrences such as
unmonitored, uncontrolled, or improperly calculated effluent releases that may have
impacted offsite dose. The inspectors reviewed gaseous effluent summary data and the
results of associated offsite dose calculations for selected dates from July 2009 through
September 2010 to determine if indicator results were accurately reported. The
inspectors also reviewed the licensees methods for quantifying gaseous and liquid
effluents and determining effluent dose. Documents reviewed are listed in the
Attachment to this report.
This inspection constituted one RETS/ODCM radiological effluent occurrences sample
as defined in IP 71151-05.
25 Enclosure
b. Findings
No findings of significance were identified.
4OA2 Identification and Resolution of Problems (71152)
Cornerstones: Initiating Events, Mitigating Systems, Barrier Integrity, Emergency
Preparedness, Public Radiation Safety, Occupational Radiation Safety, and
.1 Routine Review of Items Entered into the Corrective Action Program
a. Inspection Scope
As part of the various baseline inspection procedures discussed in previous sections of
this report, the inspectors routinely reviewed issues during baseline inspection activities
and plant status reviews to verify that they were being entered into the licensees CAP at
an appropriate threshold, that adequate attention was being given to timely corrective
actions, and that adverse trends were identified and addressed. Attributes reviewed
included: the complete and accurate identification of the problem; that timeliness was
commensurate with the safety significance; that evaluation and disposition of
performance issues, generic implications, common causes, contributing factors, root
causes, extent-of-condition reviews, and previous occurrences reviews were proper and
adequate; and that the classification, prioritization, focus, and timeliness of corrective
actions were commensurate with safety and sufficient to prevent recurrence of the issue.
Minor issues entered into the licensees CAP as a result of the inspectors observations
are included in the attached List of Documents Reviewed.
These routine reviews for the identification and resolution of problems did not constitute
any additional inspection samples. Instead, by procedure they were considered an
integral part of the inspections performed during the quarter and documented in
Section 1 of this report.
b. Findings
No findings of significance were identified.
.2 Daily Corrective Action Program Reviews
a. Inspection Scope
In order to assist with the identification of repetitive equipment failures and specific
human performance issues for follow-up, the inspectors performed a daily screening of
items entered into the licensees CAP. This review was accomplished through
inspection of the stations daily condition report packages.
These daily reviews were performed by procedure as part of the inspectors daily plant
status monitoring activities and, as such, did not constitute any separate inspection
samples.
26 Enclosure
b. Findings
No findings of significance were identified.
.3 Semi Annual Trend Review
a. Inspection Scope
The inspectors performed a review of the licensees CAP and associated documents to
identify trends that could indicate the existence of a more significant safety issue. The
inspectors review was focused on repetitive equipment issues, but also considered the
results of daily inspector CAP item screening discussed in Section 4OA2.2 above,
licensee trending efforts, and licensee human performance results. The inspectors
review nominally considered the 6 month period of June 1, 2010, through
November 30, 2010, although some examples expanded beyond those dates where the
scope of the trend warranted.
The review also included issues documented outside the normal CAP; including major
equipment problem lists, repetitive and/or rework maintenance lists, departmental
problem/challenges lists, system health reports, quality assurance audit/surveillance
reports, self assessment reports, and Maintenance Rule assessments. The inspectors
compared and contrasted their results with the results contained in the licensees
CAP trending reports. Corrective actions associated with a sample of the issues
identified in the licensees trending reports were reviewed for adequacy.
This review constituted a single semi-annual trend inspection sample as defined in
IP 71152-05.
b. Findings
No findings of significance were identified.
.4 Annual Sample: Review of Operator Workarounds
a. Inspection Scope
The inspectors evaluated the licensees implementation of their process used to identify,
document, track, and resolve operational challenges. Inspection activities included, but
were not limited to, a review of the cumulative effects of the Operator Workarounds
(OWAs) on system availability and the potential for improper operation of the system, for
potential impacts on multiple systems, and on the ability of operators to respond to plant
transients or accidents.
The inspectors performed a review of the cumulative effects of OWAs. The documents
listed in the Attachment were reviewed to accomplish the objectives of the inspection
procedure. The inspectors reviewed both current and historical operational challenge
records to determine whether the licensee was identifying operator challenges at an
appropriate threshold, had entered them into their CAP, and proposed or implemented
appropriate and timely corrective actions which addressed each issue. Reviews were
conducted to determine if any operator challenge could increase the possibility of an
initiating event, if the challenge was contrary to training, required a change from
long-standing operational practices, or created the potential for inappropriate
27 Enclosure
compensatory actions. Additionally, all temporary modifications were reviewed to
identify any potential effect on the functionality of Mitigating Systems, impaired access to
equipment, or required equipment uses for which the equipment was not designed.
Daily plant and equipment status logs, degraded instrument logs, and operator aids or
tools being used to compensate for material deficiencies were also assessed to identify
any potential sources of unidentified operator workarounds.
This review constituted one operator workaround annual inspection sample as defined in
IP 71152-05.
b. Findings
No findings of significance were identified.
4OA3 Followup of Events and Notices of Enforcement Discretion (71153)
.1 (Closed) Licensee Event Report 05000455/2010-001-00: Reactor Protection and
Auxiliary Feedwater Actuation Signals from Low Steam Generator (S/G) Level Due to
Inadequate Surveillance Testing
On April 19, 2010, Unit 2 was in the process of shutting down and cooling down in order
to enter a planned refuelling outage. At 5:03 am with the unit in Mode 4, Hot Shutdown,
a feedwater isolation valve (FWIV) surveillance was in progress and the 2D S/G
secondary side water level lowered to the low S/G water level setpoint, which resulted in
a valid FWIV actuation. All equipment actuated properly and due to the plant condition,
the control rods were already fully inserted with the reactor trip breakers open.
The licensees apparent cause evaluation determined that the operators had received
Just-In-Time training immediately prior to the refuelling outage. However, inadequate
oversight combined with an inadequate procedure had resulted in inadequate control of
the surveillance test activity. The licensee determined that the surveillance procedure
did not allow for S/G levels to be recovered between the testing of the two trains,
performance of the test during the outage was not performed at the optimum time based
on plant parameters, and no pre-job briefing was performed the night of the test. The
licensee had determined that while the test was performed during a time in the outage
that it was usually performed that it had been performed when the RCS was hotter than
it had been before, which resulted in the S/G water level steaming off at a faster rate
than previously experienced.
The inspectors reviewed the Licensee Event Report (LER), licensee procedures, and
performed interviews of selected licensee personnel. The inspectors agreed with the
licensees apparent cause evaluation conclusion regarding the three causes of the FWIV
actuation. The inspectors reviewed the licensees corrective actions and verified that the
corrective actions addressed the causes and were implemented. Corrective actions
included revising the FWIV surveillance procedure, strengthening pre-job briefs, and
reinforcing the roles and responsibilities of key outage operations positions.
Although this issue was corrected, it constituted a performance deficiency and a minor
violation of 10 CFR 50, Appendix B, Criterion V, Instructions, Procedures and
Drawings. However, it is not subject to enforcement action in accordance with
Section 2.3.1 of the Enforcement Policy. Because the performance deficiency was not
28 Enclosure
more than minor and not a finding per IMC 0612, Appendix B, Issue Screening, a
cross-cutting aspect was not assigned to this violation.
This event follow-up review constituted one sample as defined in IP 71153-05.
4OA5 Other Activities
.1 Review of Institute of Nuclear Power Operations Report
The inspectors reviewed the Institute of Nuclear Power Operations July 2010 Evaluation
Report, Byron Station, dated December 10, 2010.
.2 Operation of an Independent Spent Fuel Storage Installation at Operating Plants
(60855.1)
a. Inspection Scope
The inspectors observed and evaluated the licensees loading operations of the first and
second multi-purpose canisters (MPC) during the licensees initial spent fuel loading
campaign to verify compliance with the Certificate of Compliance, TS, NRC Regulations,
and associated procedures. The inspectors observed heavy loads movements inside
the Fuel Handling Building (FHB) including: lifting of the transfer cask (HI-TRAC) into the
spent fuel pool, lifting of the HI-TRAC from the spent fuel pool to the decontamination
stand, and transfer of the MPC from the HI-TRAC to the storage cask (HI-STORM) while
the casks are stacked on one another in a laterally restrained configuration. The
inspectors observed loading of spent fuel assemblies from the spent fuel pool into the
MPC. The inspectors observed MPC processing operations including: decontamination
and surveying, canister welding, non-destructive weld examinations, hydrostatic testing,
canister draining, vacuum drying, and helium backfilling. The inspectors observed heavy
loads operations outside of the FHB including: transfer of the HI-STORM from inside of
the FHB to outside of the FHB on a low profile transporter, and transfer of the
HI-STORM to the Independent Spent Fuel Storage Installation (ISFSI) pad using a
vertical cask transporter.
During performance of the activities, the inspectors evaluated the licensee staffs
familiarity with procedures, supervisory oversight, and communication and coordination
between the different groups involved. The inspectors reviewed loading procedures and
evaluated the licensees adherence to these procedures. The inspectors also observed
the licensees process to verify that the contamination and radiation levels from the
transfer cask and storage cask were below the regulatory and TS limits. The inspectors
attended various pre-job briefs to assess the licensees ability to identify critical steps of
the evolution, potential failure scenarios, and tools to prevent errors.
The inspectors reviewed issue reports and the associated follow-up actions that were
generated during the loading campaign as well as 10 CFR 72.48 screenings.
On Saturday, August 28, 2010, the licensees first MPC containing spent nuclear fuel
was left unmonitored during processing operations at the end-of-shift operations. The
MPC had been undergoing vacuum drying throughout the day and at the end of shift
was left under vacuum. While the canister was under vacuum, cooling of the fuel was
significantly reduced, and subsequently fuel temperatures were elevated. The licensees
29 Enclosure
safety analysis for the spent fuel cask system required that the MPC shell temperature
be maintained below 125 degrees Fahrenheit (°F) while the MPC is under vacuum. A
MPC shell temperature of 125°F corresponds to a design basis limit of 1040°F for fuel
cladding temperature as discussed in the Holtec HI-STORM 100 FSAR, Revision 5.
Cooling of the water contained within the HI-TRAC annulus, the area between the MPC
and the HI-TRAC, is provided by a chiller unit when required. For the fuel selected,
annulus cooling would be required to maintain the MPC shell temperature below 125oF.
Prior to the end of shift on August 28, 2010, the inspectors asked the licensee what
plans were in place for monitoring the MPC overnight. The inspectors were informed
that various options were being considered for monitoring the MPC overnight and that a
final decision on the exact method of monitoring and specific staffing had not been
determined. Later that evening, the licensee discussed the importance of the chiller with
technical experts and determined that, due to the heat loads selected for this canister,
heat rates were not high enough to exceed fuel temperature limits even in the event of a
chiller shut off. Therefore, the licensee concluded that no monitoring was necessary
overnight. No specific analysis was performed to support this determination.
On the morning of August 29, 2010, the licensee identified that the chiller had
unexpectedly shut off overnight; however, the licensee failed to recognize that the
annulus water temperature corresponded to a safety limit for fuel cladding temperature
as discussed in the FSAR. A back-up chiller was placed in service promptly; however,
the licensee did not recognize the importance of determining the current water
temperature to ensure that no safety limits were exceeded. The inspectors notified the
licensee of the design basis annulus water temperature limit of 125oF, which was
specified in the FSAR. The inspectors estimated that the 125oF limit was likely
exceeded by several degrees.
The licensee began a prompt evaluation to determine if any fuel cladding safety limits
were exceeded. Working with the licensees vendor, Holtec, the prompt evaluation
concluded that no fuel cladding safety limits were exceeded.
In response to the circumstances of August 28 and 29, 2010, the NRC increased the
oversight of the ISFSI project at the Byron Station and began a reactive inspection on
September 1, 2010. The results of this reactive inspection are documented in NRC
IR Nos. 05000454/2010007; 05000455/2010007; and 07200068/2010002.
Following completion of the reactive inspection the inspectors reviewed the licensees
corrective actions that had been completed and subsequent procedure changes. The
ISFSI inspectors remained onsite for the licensees second MPC loading operations.
Following the second MPC loading, ISFSI inspectors monitored loading operations from
the regional office.
b. Findings
(1) Inadequate Procedures for Implementing Final Safety Analysis Report Required Annulus
Cooling
Introduction: The inspectors identified a Severity Level IV NCV of very low safety
significance of 10 CFR 72.150, "Instructions, Procedures, and Drawings." Specifically,
30 Enclosure
the licensee failed to have procedures in place to ensure that the design basis peak fuel
cladding temperature limit would not be exceeded during canister loading operations.
Description: The licensee revised their ISFSI loading procedures following the
circumstances of August 28 and 29. During review of the revised procedures, the
inspectors identified three examples where the licensee failed to meet the requirements
in 10 CFR 72.150, Instructions, Procedures, and Drawings.
1. Byron Fuel Handling Procedure BFP FH-71, MPC Processing, Revision 8, provides
guidance for the licensee to complete MPC processing operations.
The Holtec FSAR, Revision 5, Chapter 4, discussed how the fuel cladding
temperature limits and associated hoop stress calculation requirements were
consistent with the guidance in Spent Fuel Storage and Transportation (SFST)
Interim Staff Guidance (ISG) - 11 during vacuum drying operations. Specifically, the
Holtec FSAR, Revision 5, Section 4.5.1.1.4.1, Vacuum Drying states, in part:
The initial loading of Spent Nuclear Fuel in the MPC requires that the water
within the MPC be drained and replaced with helium. For MPCs containing
moderate burn-up fuel assemblies only, this operation may be carried out using
the conventional vacuum drying approach. In this method, removal of the last
traces of residual moisture from the MPC cavity is accomplished by evacuating
the MPC for a short time after draining the MPC.
For any decay heat load in an MPC-32, vacuum drying of the MPC is performed
with the annular gap between the MPC and the HI-TRAC continuously flushed
with water. The water movement in this annular gap will maintain the MPC shell
temperature at about the temperature of flowing water. Thus, the thermal
analysis of the MPC during vacuum drying for these conditions is performed with
cooling of the MPC shell with water at a bounding maximum temperature of
125oF.
To avoid excessive conservatism in the computed FLUENT solution, partial
recognition for higher axial heat dissipation is adopted in the peak cladding
calculations. The boundary conditions applied to this evaluation are: ii. The
entire outer surface of the MPC shell is postulated to be at a bounding maximum
temperature of 125°F.
As described in the Holtec FSAR, the intent of flushing water through the annulus
region between the HI-TRAC and the MPC is to maintain the surface of the MPC
shell below 125 °F. The Holtec FSAR states that if MPC shell temperature remains
below 125 °F, the peak fuel cladding temperatures, for moderate burn-up fuel, during
short-term vacuum drying operations, in an MPC with design basis maximum heat
loads, are calculated to be less than the SFST ISG-11 safety limit of 1058ºF.
During vacuum drying operations at the Byron Station, the seal that maintains water
inside the annulus region is removed and allowed to flood several inches over the
top of the MPC. The licensees procedures required the annulus water to be cooled
with a submersible pump, heat exchanger, and chiller. The submersible pump took a
suction of water above the MPC lid and discharged water on the other side of the
31 Enclosure
MPC lid. Temperature measurements were recorded near the suction and discharge
locations. The licensee failed to have an analysis demonstrating that temperatures
measured at the top of the MPC where water was being continuously flushed by a
submersible pump was indicative of canister shell temperatures on the side of the
MPC where water was not being continuously flushed. The licensee failed to
configure the intake and discharge of the submersible pump to ensure that all
regions of the MPC were continuously flushed with water and subsequently failed to
ensure that temperature measurements taken were indicative of the highest shell
temperatures present. The licensee entered these issues into its CAP (IR 1131564)
and initiated actions to evaluate the condition. Following the event, the licensee
contacted the cask vendor, Holtec, and completed an analysis to show that peak fuel
cladding temperature limits were not exceeded. The licensee revised the
configuration of the pump such that the pump intake was at the top of the annulus
and the pump discharge was through the annulus drain line near the bottom of the
2. The BFP FH-71, MPC Processing, Revision 8, provides guidance for the licensee
to complete MPC processing operations.
As previously discussed in 4OA5.2.b.1.1, the annulus between the MPC and the
HI-TRAC is required to be continuously flushed with water to ensure that the MPC
shell temperature is maintained below the design basis limit of 125 oF in order to
maintain fuel cladding peak temperatures under design limits as described in the
Holtec FSAR, Revision 5.
The BFP FH-71 contained guidance of when to initiate temperature monitoring of the
annulus region; however the procedure failed to contain guidance of when
temperature monitoring was to be terminated. On October 17, 2010, during MPC
processing operations, the licensee completed vacuum drying operations and
subsequently terminated, without procedural guidance, monitoring of annulus
temperature. At the time monitoring was terminated, the canister was still under
vacuum and annulus temperature requirements were still required by the licensees
design basis. The inspectors brought this discrepancy to the attention of the field
supervisor and the licensee reinitiated temperature monitoring until the MPC was
filled with helium. The licensee entered this issue into in its CAP (IR 1131564) and
completed procedural revisions.
3. The BFP FH-71, MPC Processing, Revision 8, provides guidance for the licensee
to complete MPC processing operations.
On October 15, 2010, an unanalyzed condition was identified regarding spent fuel
peak cladding temperatures while a MPC was filled with nitrogen. The Holtec FSAR
Revision 5 has a thermal analysis for water, helium, and vacuum to exist in the MPC,
however nitrogen, which is used to force water out of the MPC and provide a
temporary inert atmosphere prior to vacuum drying, is unanalyzed. The procedures
section of the Holtec FSAR stated that helium or nitrogen can be used as a gas for
water blowdown operations; however the FSAR did not provide a thermal analysis
for nitrogen. The licensee failed to have an independent thermal analysis for this
condition. The licensee determined that the vacuum thermal analysis bounded the
condition; however this analysis required annulus cooling and imposed MPC shell
32 Enclosure
temperature limits. The licensee initiated annulus cooling, however when the system
actuated, the MPC shell temperature design limit of 125°F was exceeded by several
degrees. Several hours later, the licensee lost function of a chiller in support of
annulus cooling which caused the FSAR temperature limit of 125°F to again be
exceeded for a short period of time. The licensee implemented contingency actions
for the annulus chiller failure, which consisted of a feed of plant demineralized water
into the annulus region and out to plant water treatment to reduce the temperature.
The licensee failed to maintain MPC shell temperatures in accordance with an
associated bounding design basis. The licensee entered this issue into its
corrective action program (IR 1127060). Following the event, the licensee contacted
the cask vendor, Holtec, and completed an analysis to show that peak fuel cladding
temperature limits were not exceeded and initiated procedural changes.
Analysis: The inspectors determined that the licensees failure to have adequate
procedures was a violation that warranted a significance evaluation. Consistent with the
guidance in Section 2.2 of the NRC Enforcement Policy, ISFSIs are not subject to the
SDP and, thus, traditional enforcement will be used for these facilities. The violation was
dispositioned using the traditional enforcement process using Section 2.3 of the
Example 1 was determined to be of more than minor significance using IMC 0612,
Power Reactor Inspection Reports, Appendix E, Examples of Minor Issues,
Example 3i, in that the licensees lack of evaluation did not assure spent fuel cladding
temperatures during vacuum drying would remain less than SFST ISG-11 safety limits
and an additional calculation was required to evaluate the condition. Examples 2 and 3
were determined to be of more than minor significance using IMC 0612, Power Reactor
Inspection Reports, Appendix E, Examples of Minor Issues, Example 2c, in that the
procedures failed to incorporate thermal acceptance criteria established by the FSAR
and that the failure to incorporate thermal acceptance criteria was repetitive.
Consistent with the guidance in Section 2.6.D of the NRC Enforcement Manual, if a
violation does not fit an example in the Enforcement Policy Violation Examples, it should
be assigned a severity level: (1) commensurate with its safety significance; and
(2) informed by similar violations addressed in the Violation Examples. The inspectors
found no similar violations in the Violation Examples. Subsequent analysis by the
licensee indicated that fuel cladding temperature safety limits were not exceeded;
therefore, the violation was determined to be of very low safety significance (Severity
Level IV).
Enforcement: 10 CFR 72.150, Instructions, Procedures, and Drawings, states, in part,
that the licensee shall prescribe activities affecting quality by documented instructions,
procedures, or drawings of a type appropriate to the circumstances and shall require that
these instructions, procedures, and drawings be followed. The instructions, procedures,
and drawings must include appropriate quantitative or qualitative acceptance criteria for
determining that important activities have been satisfactorily accomplished.
33 Enclosure
Contrary to the above,
1. On October 15, 2010, Procedure BFP FH-71, MPC Processing, Revision 8, was
identified to not contain adequate instructions, since the procedure failed to configure
the intake and discharge of the submersible pump to ensure that all regions of the
MPC were continuously being flushed with water and subsequently failed to ensure
that temperature measurements taken were indicative of the highest MPC shell
temperatures present.
2. On October 15, 2010, Procedure BFP FH-71, MPC Processing, Revision 8, was
identified to not contain adequate instructions, since the procedure failed to contain
guidance of when temperature monitoring was to be terminated. During MPC
processing operations, the licensee completed vacuum drying operations and
subsequently terminated, without procedural guidance, monitoring of annulus
temperatures when annulus temperature requirements were still required by the
licensees design basis.
3. On October 15, 2010, Procedure BFP FH-71, MPC Processing, Revision 8, was
identified to not contain adequate instructions, since the procedure failed to maintain
MPC shell temperatures in accordance with an associated bounding design basis
analysis while the MPC was filled with nitrogen.
This is a violation of 10 CFR 72.150, Instructions, Procedures, and Drawings. This
Severity Level IV Violation is being treated as a NCV consistent with Section 3.1.1 of the
NRC Enforcement Manual. The licensee documented these issues in its corrective
action program as IR 1131564 and IR 1127060. (NCV 05000454/2010005-02;
05000455/2010005-02; 07200068/2010003-1, Inadequate Procedures for
Implementing FSAR Required Annulus Cooling)
(2) Inadequate Procedural Guidance for Heavy Loads Operations
Introduction: The inspectors identified a Severity Level IV NCV of very low safety
significance of 10 CFR 72.150, "Instructions, Procedures, and Drawings." Specifically,
the licensee failed to have procedures in place to ensure that heavy loads were operated
safely in the Fuel Handling Building.
Description: The inspectors identified two examples where the licensee failed to meet
the requirements of 10 CFR 72.150, Instructions, Procedures, and Drawings.
1. On August 24, 2010, the inspectors observed that the crane operator did not check
the hoist brakes on the Fuel Handling Building crane while lifting a HI-TRAC and an
empty MPC from the decontamination stand to the cask wet pit in the spent fuel pool.
The lifted load at the time was approximately 90 tons. The next load to be lifted, a
HI-TRAC with a fully loaded MPC, would be just under the maximum critical load of
the crane, 125 tons.
The Byron Station is committed to following the requirements of ASME B30.2.0-
1976, Overhead and Gantry Cranes (Top Running Bridge, Multiple Girder). In
ASME B30.2.0-1976, Section 2-3.2.3.g, it states The operator shall check the hoist
34 Enclosure
brakes at least once each shift if a load approaching the rated load is to be handled.
This shall be done by raising the load a short distance and applying the brakes.
The inspectors brought the requirements of ASME B30.2.0-1976 to the attention of
the field supervisor and the crane operator checked the crane brakes. The
inspectors reviewed licensee procedures related to heavy loads operations and
determined that no procedural guidance existed to instruct crane operators to check
holding brakes or defined a specific weight as approaching the rated load. The
licensee documented the issue in its corrective action program (IR 1106006), and
added procedural guidance.
2. On September 4, 2010, the licensee was performing MPC transfer operations from
the HI-TRAC to the HI-STORM in a restrained stack configuration using BFP FH-69,
HI-TRAC Movement within the Fuel Building, Revision 5. During withdrawal of the
mating device tongue, the bottom HI-TRAC pool lid became mispositioned in the
mating device when one of the air bags did not fully deflate. The licensee was
unaware this mispositioning placed the edge of the HI-TRAC pool lid in the travel
path of the MPC when it was to be downloaded. The licensee continued and began
to lower the MPC from the HI-TRAC into the HI-STORM. The inspectors observed
that a momentary unexpected load decrease was registered on the Fuel Handling
Building crane load cell from approximately 38 tons to approximately 19 tons. As the
signalman instructed the crane operator to cease lowering, a loud noise was heard,
and the load cell indicated a rapid rise in load back up to approximately 38 tons.
Heavy loads operations were immediately stopped, and plant notifications were
made. The licensee determined that the safest configuration for the MPC would be
inside the HI-STORM and subsequently continued the transfer operation. The
HI-TRAC pool lid had damage to its protective coating. The licensee performed a
walkdown of the crane, inspected the slings for damage, and performed a structural
analysis to show that the MPC could still perform its design function. The licensee
failed to have procedures in place to ensure the mating device air bags properly
deflated and that the HI-TRAC pool lid was correctly positioned on the mating device.
The licensee failed to have procedures that would ensure that interference points
such as the HI-TRAC bottom pool lid did not exist during MPC transfer operations.
The licensee documented the issue in its corrective action program (IR 1109925),
and added procedural guidance.
Analysis: The inspectors determined that the licensees failure to have adequate
procedures was a violation that warranted a significance evaluation. Consistent with the
guidance in Section 2.2 of the NRC Enforcement Policy, ISFSIs are not subject to the
SDP and, thus, traditional enforcement will be used for these facilities. The violation was
dispositioned using the traditional enforcement process using Section 2.3 of the
The examples were determined to be of more than minor significance because if left
uncorrected, these could lead to a more significant safety concern. Consistent with the
guidance in Section 2.6.D of the NRC Enforcement Manual, if a violation does not fit an
example in the Enforcement Policy Violation Examples, it should be assigned a severity
level: (1) Commensurate with its safety significance; and (2) informed by similar
violations addressed in the Violation Examples. The violation screened as having very
low safety significance (Severity Level IV).
35 Enclosure
Enforcement: 10 CFR 72.150, Instructions, Procedures, and Drawings, states, in part,
that the licensee shall prescribe activities affecting quality by documented instructions,
procedures, or drawings of a type appropriate to the circumstances and shall require that
these instructions, procedures, and drawings be followed. The instructions, procedures,
and drawings must include appropriate quantitative or qualitative acceptance criteria for
determining that important activities have been satisfactorily accomplished.
Contrary to the above,
1. On August 24, 2010, Procedure FH-20; Operation of Fuel Handling Building Crane;
Revision 24, was identified to not contain adequate instructions, since the procedure
failed to establish procedural guidance to instruct crane operators to check holding
brakes or define a specific weight as approaching a rated load. The licensee
documented the issue in its corrective action program.
2. On September 4, 2010, Procedure BFP FH-69, HI-TRAC Movement within the Fuel
Building, Revision 5, was identified to not contain adequate instruction, since the
procedure failed to have steps in place to ensure the mating device air bags properly
deflated and that the HI-TRAC pool lid was correctly positioned on the mating device.
The licensee failed to have procedures that would ensure that interference points
such as the HI-TRAC bottom pool lid did not exist during MPC transfer operations.
This is a violation of 10 CFR 72.150, Instructions, Procedures, and Drawings. This
Severity Level IV Violation is being treated as a NCV consistent with Section 3.1.1 of the
NRC Enforcement Manual. The licensee documented these issues in its corrective
action program as IR1106006 and IR1109925. (NCV 05000454/2010005-03;
05000455/2010005-03; 07200068/2010003-2, Inadequate Procedural Guidance for
Heavy Loads Operations.)
4OA6 Meetings
.1 Exit Meeting Summary
On January 13, 2011, the inspectors presented the inspection results to Mr. B. Adams,
and other members of the licensee staff. The licensee personnel acknowledged the
inspection results presented. The inspectors confirmed that all proprietary material
reviewed during the inspection was returned to the licensee staff.
.2 Interim Exit Meetings
Interim exits were conducted for:
- The results of the LORT Program inspection with Ms. L. Bogue on October 29,
2010.
- The results of the Heat Sink inspection to Mr. B. Adams on December 3, 2010.
- The results of the Radioactive Gaseous and Liquid Effluent Treatment and
Performance Indicator Verification inspection with Mr. D. Enright on
December 14, 2010.
36 Enclosure
- The results of the ISFSI Initial Cask Loading Campaign inspection with
Mr. D. Enright on December 20, 2010.
The licensee acknowledged the issues presented. The inspectors confirmed that none
of the potential report input discussed was considered proprietary.
ATTACHMENT: SUPPLEMENTAL INFORMATION
37 Enclosure
SUPPLEMENTAL INFORMATION
KEY POINTS OF CONTACT
Licensee
D. Enright, Site Vice President
B. Adams, Plant Manager
L. Bogue, Training Director
A. Daniels, Nuclear Oversight
C. Gayheart, Operations Director
D. Gudger, Regulatory Assurance Manager
B. Youman, Work Management Director
T. Spelde, ISFSI Project Manager
Nuclear Regulatory Commission
E. Duncan, Chief, Reactor Projects Branch 3
A.M. Stone, Chief, Engineering Branch 3
LIST OF ITEMS OPENED, CLOSED AND DISCUSSED
Opened
05000454/2010005-01 NCV Inadequate Instructions for the Inspection of the River
05000455/2010005-01 Screen House and Essential Service Water Cooling Tower
(Section 1R07.1.b)05000454/2010005-02 NCV Inadequate Procedures for Implementing FSAR Required
05000455/2010005-02 Annulus Cooling (Section 4OA5.2.b.1)
07200068/2010003-01
05000454/2010005-03 NCV Inadequate Procedural Guidance for Heavy Loads05000455/2010005-03 Operations (Section 4OA5.2.b.2)
07200068/2010003-02
Closed
05000454/2010005-01 NCV Inadequate Instructions for the Inspection of the River
05000455/2010005-01 Screen House and Essential Service Water Cooling Tower
(Section 1R07.1.b)
05000455/2010-001-00 LER Reactor Protection and Auxiliary Feedwater Actuation
Signals from Low Steam Generator Level Due to Inadequate
Surveillance Testing (Section 4OA3.1)05000454/2010005-02 NCV Inadequate Procedures for Implementing FSAR Required
05000455/2010005-02 Annulus Cooling (Section 4OA5.2.b.1)
07200068/2010003-01
05000454/2010005-03 NCV Inadequate Procedural Guidance for Heavy Loads05000455/2010005-03 Operations (Section 4OA5.2.b.2)
07200068/2010003-02
1 Attachment
LIST OF DOCUMENTS REVIEWED
The following is a list of documents reviewed during the inspection. Inclusion on this list does
not imply that the NRC inspectors reviewed the documents in their entirety, but rather, that
selected sections of portions of the documents were evaluated as part of the overall inspection
effort. Inclusion of a document on this list does not imply NRC acceptance of the document or
any part of it, unless this is stated in the body of the inspection report.
Section 1R01: Adverse Weather Protection
- IR 1130413; Unsecured Items Under 345KV Lines SW of Plant, October 25, 2010
- IR 1131473; TB South Wall Louvers Cannot be Closed, October 27, 2010
- IR 1136634; Antifreeze Not at Correct Concentration 0SX02PB, November 06, 2010
- IR 1138951; Wrong Revision of TB Louver TCCP Installed in Plant, December 01, 2010
- IR 1146976; NOS ID: Winter Readiness Evaluation on TR Tanks, December 01, 2010
- IR 1153775; Winter Readiness Issue - SH Shutdown in January-C&T Level 4,
December 17, 2010
- IR 1154164; 0BOSR XFT-A1 Freeze Protection Discrepancies, December 19, 2010
- OP-AA-108-111-1001; Severe Weather and Natural Disaster Guidelines, Revision 5
- IR 1122947; NRC Walkdown of ISFSI Storage Pad Area, October 06, 2010
- 0BOSR XFT-A1; Freezing Temperature Equipment Protection SH and Department Support
Requirements, Rev. 13
- 0BOSR XFT-A3; Freezing Temperature Equipment Protection Plant Ventilation Systems,
Rev. 7
- 0BOSR XFT-A4; Freezing Temperature Equipment Protection Protected Area Buildings
Ventilation Systems and Tanks, Rev. 7
- 0BOSR XFT-A5; Freezing Temperature Equipment Protection Non-Protected Area Buildings
Ventilation Systems, Rev. 5
Section 1R04: Equipment Alignment (Quarterly)
- IR 113291; Review CS009 Concern for Past Reportability, October 27, 2010
- IR 146420; 1B SX Motor Oil Level Too High, November 30, 2010
- IR 146423; 2A SX Motor Oil Level Too High, November 30, 2010
- Drawing M-61; Diagram of Safety Injection, Revision AE
- Drawing M-64; Diagram of Chemical & Volume Control & Boron Thermal Regeneration,
Revision AY
- IR 1125754; Broken Finder Base Assemblies and Cracked Rotor, October 13, 2010
- IR 1128753; Unplanned LCOAR, 1A CV PP CLR Significant SX Leak, October 20, 2010
- IR 1140870; Normal Valve Position Incorrect on P&ID M-136 SH. 1 - CCP
- BOP CV-1a; Startup of the CV System (Unit 1), Revision 22
- OP-AA-103-102; Watch-Standing Practices, Revision 8
- OP-AA-108-101; Control of Equipment and System Status, Revision 8
- OP-AA-10; Clearance and Tagging Process Description, Revision 2
- M-46; Diagram of Containment Spray, Sheets 1A, 1B, and 1C; Revision AN, AR, and AL
- BOP DG-M1; Diesel Generator System Valve Line-Up, Rev. 19
- BOP DG-21; Diesel Generator Air Receiver Pressure Control, Rev. 5
2 Attachment
Corrective Action Documents As a Result of NRC Inspection
- IR 1148096; NRC Identified Oil Leak on 2SI8924A Valve, December 2, 2010
- IR 1148603; Clarification Needed for ECCS LCOAR Applicability, December 2, 2010
- IR 1462222; NRC Concern Being Addressed for SX Oil Reservoir Breather,
November 30, 2010
Section 1R05: Fire Protection (Quarterly)
- Byron Pre-Fire Plan Layout; Unit 2 Auxiliary Building General Area - South-426 Elevation,
Fire Area/Fire Zone: 11.6-0 South
- Byron Pre-Fire Plan Layout; Auxiliary Building General Area - North-383 Elevation, Fire
Area/Fire Zone-11.4-0 North
- Byron Pre-Fire Plan Layout; Unit 1 Auxiliary Building 1A Centrifugal Charging Pump Room-
364 Elevation, Fire Area/Fire Zone: 11.3D-1
- Byron Pre-Fire Plan Layout; Unit 2 Auxiliary Building General Area - North-364 Elevation, Fire
Area/Fire Zone: 11.3-0 North
- Fire Drill 10-04 Minutes; Condensate Polisher Room, December 7, 2010
- Fire Drill 10-04 Minutes; CP Room, November 30, 2010
- Fire Drill 10-04 Minutes; CP Room, November 23, 2010
- OP-AA-201-003; Fire Drill Performance, Revision 11
- Byron/Braidwood Fire Protection Report; Section A5.7-20
Corrective Action Documents As a Result of NRC Inspection
- IR 1135638; NRC Identified Missing Hardware on 1AP26E, November 04, 2010
- IR 1135645; NRC Identified Missing Hardware on 1RY01ED, November 04, 2010
- IR 1137859; NRC Identified Issue with Conduct of 4th Quarter fire Drills, November 09, 2010
- IR 1140585; NRC Identified Degraded Sealant on Concrete Floor Covers, November 15, 2010
Section 1R06: Flood Protection Measures
- IR 648543; Hinge Slade Needs to be Replaced 0DSSD192, July 9, 2007
- IR 878278; MM IR for Weekly and Daily Schedule Adherence, February 2, 2009
- IR 1023213; 0DSSD191 Door Binding in Door Frame, January 29, 2010
Section IR07: Heat Sink
- 0BMSR SX-5, Inspection of River Screen House and Essential Service Water Cooling Tower
Basins (CM-4), Revision 2
- 0BOL 7.9, LCOAR UHS TS LCO #3.7.9, Revision 12
- IR 1098065, 0BMSR SX-5 Did Not Pass Acceptance Criteria, August 4, 2010
- IR 1111893, Very Minor Leaking, September 9, 2010
- IR 1147407, GL 89-13 HX Acceptance Criteria Still at 10% for some HXs, December 2, 2010
- IR 311626, As-Found Accept Criteria Not Met for 1AF01ABHX; March 11, 2005
- IR 396735, SXCT Fan Gear Box Oil Level W.O. Instructions Need Changing,
November 8, 2005
- IR 581931, Eddy Current Results on 1A DG Upper Jacket Water Cooler, January 22, 2007
- IR 656533; Replace 10 percent Tube Fouling A.c. w/ design-based for 89-13 HXs,
August 2, 2007
- IR 865370, Degraded 1A DG JW Cooler Stationary End Divider Plate, January 12, 2009
3 Attachment
- BMP 3000-15, Application of Palmer Internationals Tubesheet Cladding System, Revision 1
- BMP 3000-16, Application of Ceramalloy Thin-Film Coating System, Revision 3
- BOP AF-7T1, Diesel Driven Auxiliary Feedwater Pump Operating Log, Revision 21
- BOP SX-12, Makeup to an Essential Service Water Mechanical Draft Cooling Tower Basin,
Revision 9
- BOP SX-13, Initiating and Terminating Essential Service Water System Blowdown, Revision 9
- BOP SX-T2, SX Tower Operation, Revision 14
- BYR 96-277, Determination of Maximum Allowable Silt Depth in River Screen House,
Devember 10, 1996
- BYR 96-301, Minimum SX Cooling Tower Basin Water Level for Anti-Vortex Duct Flow,
January 8, 1997
- BYR04-055, Determination of Tube Plugging Limits for DG Jacket Water Coolers,
September 15, 2010
- CC-AA-309-101, Engineering Technical Evaluations, Revision 11
- EC 339308, Acceptance Criteria for As-Found Heat Exchanger Tube Blockage, Revision 0
- EC 341227, Evaluation Repair of the upper Jacket Water Cooler East Side Divider Plate for
the 1A Diesel Generator Jacket Water Heat Exchanger, Revision 01
- EC 345255, Acceptance Criteria for As-Found Heat Exchanger Tube Blockage, 1/2AF01AB
Heat Exchanger, Revision 0
- EC 355109, 1B AF Pump Oil Cooler (1AF01AB) Tube Blockage Evaluation, June 1, 2005
- EC 365231, Establish Tube Plugging Criteria for Eddy Current Testing for 1/2DG01KA/B,
1/2VP01AA/B/C/D, 0/1/2CC01A, 0WO01C A/B, 1/2VA 01/2/3/4/6S A/B, and 1/2V A08S Heat
Exchangers
- ER 1147389, Less than adequate Application of EC #355109, December 2, 2010
- ER-AA-340-1002, Service Water Heat Exchanger Inspection Guide, Revision 4
- KSV-20-T, Jacket Water Heat Balance Rev, February 9, 1978
- NDIT BYR97-156, Evaluation of the Ceramalloy Protective to the inlet and floating end
channels of the DG Jacket Water Coolers per ER9701078
- NED-M-MSD-014, Byron Ultimate Heat Sink Cooling Tower Basin Makeup Calculation,
April 6, 2008
- NED-Q-MSD-001, ESW Cooling Tower Transient Model: Part I, Revision 0
- SX-TH01, Water Volume in SX System Outdoor Piping and SX Tower Basin, Revision 0
- WO 1050672, EPP GL 89-13 Heat Exchanger Inspection For DG, January 12, 2009
- WO 1218253, Support Diver Insp/Cleaning SXCT South 0B Basin/Sed PM ID 13,
June 9, 2009
- WO 1232201, SXCT A Cell Inspection Per TRM, May 5, 2010
- WO 1236817, SXCT C Cell Inspection Per TRM, March 3, 2010
- WO 1287340, 1SX01PA Comprehensive IST Req for Essential Service Water Pu,
February 18, 2010
- WO 1339209, 1SX01PB Comprehensive IST Req for Essential Service Water Pu,
August 5, 2010
- WO 1342305, Support Diver Insp/Cleaning RSH South 0B Intake/Sed PM ID 30, July 21, 2010
- WO 601958, 1AF01AB - HX Inspection Per Generic Letter 89-13, October 25, 2004
- WO 722875, Exelon Byron Personal Service Report Analytical Report 1B DG Jacket Water
Deposit Sample, December 18, 2006
- WO 799802, Eddy Current Examination Final Report, January 22, 2010
- WO 840626, EPP GL 89-13 Heat Exchanger Inspection for DG, January 21, 2007
- WO 961095, 1AF 01AB - HX Inspection Per Generic Letter 89-13, February 18, 2008
4 Attachment
Corrective Actions Generated As a Result of the Inspection
- IR 1142249, Revise Procedure BVP 800-30 to Update Attachment 8, November 18, 2010
- IR 1144559, NRC IDD: Work Package Documentation, November 24, 2010
- IR 1144584, NRC IDD: Surveillance Criteria Needs Better Detail, November 24, 2010
- IR 1146808, NRC ID: Enhancement to Rock River Level Monitoring/Silting, December 1, 2010
- IR 1147389, Less Than Adequate Application of EC #355109, December 2, 2010
- IR 1147407, GL 89-13 HX Acceptance Criteria Still at 10% for Some HXs, December 2, 2010
- IR 1147478, NRC Question on SXCT Fan Oil Level Operability, December 2, 2010
Section 1R12: Maintenance Effectiveness
- WO 1206254; Clean Tube Side of Lube Oil Coolers, January 10, 2010
- WO 1387717; Clean Tube Side of Lube Oil Coolers, November 17, 2010
- IR 1141902; 2B DG Upper Lube Oil Hx Check Bolt Torque Tightness, November 17, 2010
- IR 1141905; 2B DG Lower Lube Oil Hx Check Bolt Torque Tightness, November 17, 2010
- IR 1141932; 1A DG Upper Lube Oil Hx Check Bolt Torque Tightness, December 7, 2010
- IR 1141934; 1A DG Lower Lube Oil Hx Check Bolt Torque Tightness, December 7, 2010
- IR 1141936; 1B DG Upper Lube Oil Hx Check Bolt Torque Tightness, December 7, 2010
- IR 1141939; 1B DG Upper Lube Oil Hx Check Bolt Torque Tightness, December 7, 2010
- WO 1387939; Check the Torque on 2B D/G Upper and Lower Lube Oil Cooler,
November 18, 2010
- WO 1393985; Proof Torque 1B D/G Lower Lube Oil Cooler Stationary Head Bolts,
December 29, 2010
- WO 1393989; Proof Torque 1B D/G Upper Lube Oil Cooler Stationary Head Bolts,
December 15, 2010
- WO 1393999; Proof Torque 1A D/G Lower Lube Oil Cooler Stationary Head Bolts,
January 4, 2011
- WO 1394004; Proof Torque 1A D/G Upper Lube Oil Cooler Stationary Head Bolts,
December 15, 2011
- List of Run Times for 2A D/G from January to November of 2010
Section 1R13: Maintenance Risk Assessments and Emergent Work Control (Quarterly)
- Draft Risk Assessment for Week of November 29, 2010
- Risk Assessment for Week of November 29, 2010; Revision 1
- Risk Assessment for Week of November 29, 2010; Revision 2
- Risk Assessment for Week of November 29, 2010; Revision 3
- Risk Assessment for Week of November 29, 2010; Revision 4
- Risk Assessment for Week of November 29, 2010; Revision 5
- Risk Assessment for Week of November 29, 2010; Revision 6
- Operations Logs November 29 - December 3, 2010
- WC-AA-101; On-line Work Control Process; Revision 17
- ER-AA-600-1042; On-line Risk Management; Revision 7
Section 1R15: Operability Evaluations (Quarterly)
- IR 709005; 1B Diesel Oil Shows Copper Trending Up - No Threat to Equipment,
October 07, 2010
- IR 1120751; Pressurizer Steam Space Sample Line Leakage, October 01, 2010
5 Attachment
- IR 1128756; Unplanned Entry Into 1BOA RCP-12 for #2 Seal Leakoff 1C RCP,
October 20, 2010
- IR 1133944; Settings on Woodward Governor, November 02, 2010
- Prompt Investigation; Parts of 7L Piston Pin Bushing Found in Engine Crankcase
- IR 1112655; Engineering NSRB Subcommittee Observation and Conclusion, September 13,
2010
- IR 1128753; Unplanned LCOAR, 1A CV Pump Cub CLR Significant SX Leak,
October 20, 2010
- IR 1133944; Settings on Woodward Governor, November 02, 2010
- IR 1149417; Inconsistent SX Piping Configuration for 1B AF PP Lube Oil Cooler,
December 07, 2010
- Licensee E-Mail from Richard Campbell dated October 26, 2010; Diesel Generator Crank
Case Oil Copper Trends
- BFP FH-63; Hi-Storm Inspection, Revision 1
- EC 379956; CV Pump Capability with No Cubicle Cooler, August 23, 2010
- Letter from U.S. NRC to Mr. T.E. Herrmann, Chairman, Pressurizer Safety Valve Working
Group, Westinghouse Owners Group, Subject: Safety Evaluation of Westinghouse Electric
Corporation Topical Report WCAP - 12910 dated February 19, 1993
- EC 381932; Op Eval 10-005, 2RY8010A Leakage Concerns, Rev. 0
- M-2544A; Unit 1 Essential Service Water Connections for Auxiliary Feedwater , Rev. C
- EC 382473; Op Evaluation 10-008, 1B AF Pump Lube Oil Cooler Piping Wrong,
December 10, 2010
- IR 1138222; Found FME in the 2A SX Shaft Driven Lube Oil Pump, November 10, 2010
- EC 382534; Evaluation of FME Plug Found in the 2SX01PA Shaft Driven Lube Oil Pump,
December 14, 2010
Section 1R18: Temporary Modifications
- EC 380566; Temporarily Disconnect Both Sudden Pressure Relays for Main Power
Transformer 2E Due to Ground Associated with Sudden Pressure Relay 63-1, Rev. 0
- EC 382399; Temporarily Jump Out Cell 42 of ESF Battery 112 to allow 125 VDC ESF Battery
Operation with 57 Cells, December 3, 2010
- BYR 97-204/BRW-97-0384-E; 125 VDC Battery Sizing Calculation, June 10, 1997
- IEEE STD 485-1983; IEEE Recommended Practice for Sizing Large Lead Storage Batteries
for Generating Stations and Substations
- BYR97-005-3; C&D Battery Discharge Characteristic Curve, November 18, 1997
Corrective Action Documents As a Result of NRC Inspection
- IR 1123778; NRC Concerns with Timeliness & Pipe Supports, September 30, 2010
Section 1R19: Post Maintenance Testing
- WO 1375300; 1B Diesel Generator Operability Surveillance, October 31, 2010
- WO 1395304; Auctioneer High Tave Function Failed High on Unit 2, December 16, 2010
- IR 1133944; Settings on Woodward Governor, November 2, 2010
- MA-BY-721-061; 125 Volt Battery Bank Quarterly Surveillance, Rev 12
- WO 99070876; Jumper Out Degraded Battery Cell - Battery 112, December 2, 2010
- MA-MW-726-605; 125 Volt DC ESF Battery Cell Jumpering, Rev. 0
6 Attachment
- EC 398100; Verify that NDIT BYR-2001-009, Rev. 0 can be Utilized to meet the Limitation
Listed in Step 3.2.4 of MA-MW-726-605 for Jumpering Out Cell 42 of Battery 112,
December 1, 2010
- IR 1146614; 112 Battery Cell 42 Low Cell Voltage, November 30, 2010
Section 1R22: Surveillance Testing
- IR 1122192; GL 08-01 Check-In deficiency - CS full of Water Technical Specifications,
October 5, 2010
- IR 1122200; GL 08-01 Check-In deficiency - CS Eductor Additive Line, October 5, 2010
- IR 1122268; GL 08-01 Check-In deficiency - BOP CS-5, October 5, 2010
- IR 1122270; GL 08-01 Check-In deficiency - CS NAOH Line, October 5, 2010
- IR 1122272; GL 08-01 Check-In deficiency - CS019 Margin, October 5, 2010
- IR 1131291; Review CS009 Concern for Reportability, October 27, 2010
- IR 1131567; Technical Specifications Bases pH Range Discrepancy, October 27, 2010
- CS System Health Report, Last Updated on June 30, 2010
- IR 1152791; Missing Screw, December 15, 2010
- 2BOSR 6.3.7-1; Unit Two Primary Containment Type C Local Leakage Rate Tests of
Containment Purge Supply Isolation Valves, Rev. 6
- WO1348943; LLRT for P-97 - 2VQ001A and 2VQ001B, December 15, 2010
Corrective Action Documents As a Result of NRC Inspection
- IR 1159250; NRC Questioned Clearance Between Scaffolds and Unit 2 Containment,
December 15, 2010
Section 40A1: Performance Indicator Verification
- IR 1094565; SX MSPI Data Discrepancy, July 26, 2010
- IR 1140964; NOS ID Winter Readiness Requirements Not Met, November 16, 2010
- IR 1152376; Unit 2 CWS MSPI Exelon At-Risk, December 14, 2010
Section 40A2: Problem Identification and Resolution
- OP-AA-102-103-1001; 2010 Quarter 4 Assessment, Operator Burden/Degraded Equipment
Aggregate Assessment, Revision 3
- OP-AA-111-101; Operating Narrative Logs and Records, Revision 7
- Plant Health Committee; Red/Yellow System Action Plan, December 12, 2010
- Letter from HOLTEC International to Exelon Generation Company, LLC, Dated
November 11, 2010
- SM-AA-102; Warehouse Operations, Revision 14
- Unit 1 & 2 Standing Order; Interim RH Restrictions until Procedures can be Revised,
December 2, 2010
- Section XI Equipment in Double Frequency, December 14, 2010
- Equipment Important to Emergency Response (EITER) in Degraded Status,
December 14, 2010
- Equipment Important to Emergency Response (EITER) in Degraded Status Requiring Comp
Measures, December 14, 2010
- Operator Challenges; December 13, 2010
- Plant Health Committee Agenda, November 29, 2010
- HC Minutes, November 08, 2010
7 Attachment
- Issue 1157146; Effectiveness Review of CCA 644073, December 30, 2010
- IR 699347; Discrepancy Between Shielding Calculation and Wall Thickness,
November 14, 2007
- IR 729631; Apparent Failure to Update Fire Protection Report, January 30, 2008
- IR 723573; Discrepancy in UFSAR Table 3.9-16 Classification, January 17, 2008
- IR 753012; During 1B AFW Pump Test an Oil Leak Developed with Flames, March 21, 2008
- IR 761313; BaR15 Coating Inspection Does Not Meet Acceptance Criteria, April 8, 2008
- IR 765900; Incorrect Emergency Exit Criteria 1BOSR 3.2.8-609D, April 21, 2008
- IR 771208; ECs for Equipment Stored in Containment Due to GSI-191, May 2, 2008
- IR 773725; Request Documented Clarification of Coating Requirements, May 9, 2008
- IR 785911; Undocumented SH to WO System Crosstie Pipes found in Auxiliary Building,
June 12, 2008
- IR 790335; Need Engineering to Provide Required Reference Dose Rates, June 25, 2008
- IR 799561; Tube Material Discrepancy in CV and SI Pump Lube Oil Coolers, July 23, 2008
- IR 828275; Tech Spec 4.12 and TRM 5.A Compliance, October 8, 2008
Corrective Action Documents As a Result of NRC Inspection
- IR 1138034; NRC Discovered Dried Boric Acid on 1FC8762B, November 9, 2010
- IR 1156959; NRC Questions Aging Engineering, Supply and Operations Actions,
December 30, 2010
Section 4OA5: Other Activities
- HI-2104725; Vacuum Drying Fuel Temperature Calculation of Byron Cask 1 Under Loss of
Annulus Circulation; Revision 0
- IR 1104940; FME - Spent Fuel Pool Cask Pit; August 23, 2010
- IR 1105064; Review of Performance on ISFSI FHB / Crane Calculations; August 23, 2010
- IR 1105388; ISFSI Transporter Failure; August 24, 2010
- IR 1105670; South Bridge L/S Stops Crane before Desired Destination; August 25, 2010
- IR 1105686; Spent Fuel Pit Bridge Crane Delay to Dry Cask Storage; August 25, 2010
- IR 1105741; FI-LL, ISFSI Lesson Learned Suggestions, Decon Improvement; August 25, 2010
- IR 1106006; NRC Identifies Procedure Improvements LL; August 26, 2010
- IR 1106593; NRC ISFSI Inspector 8/26/10 Observations; August 26, 2010
- IR 1107172; FI-LL, BFP FH-78 for WM CLG Option HI-TRAC Annulus Vacuum Drying System
Operations; August 29, 2010
- IR 1107675; Holtec FSAR Table 1.2.2 Contains Incorrect Value for MPC 32;
September 29, 2010
- IR 1108142; Discrepancy in BFP FH-71; August 31, 2010
- IR 1108196; SAM #556 Needs Moved Into FHB to Support ISFSI; August 31, 2010
- IR 1108234; Who is in Charge: Exelon Nuclear or Contractors; August 31, 2010
- IR 1108255; ISFSI NRC Communications; August 31, 2010
- IR 1108790; Holtec ISFSI Letter on Vacuum Drying was Revised; September 1, 2010
- IR 1109916; ISFSI Observations and Lessons Learned; September 4, 2010
- IR 1109925; Momentary Load Decrease During Multi Purpose Canister Download;
September 4, 2010
- IR 1110070; ISFSI HI-STORM Transporter Shutdown; September 5, 2010
- IR 1114568; BWR ISFSI MPCS Require Analysis-Cantera; September 17, 2010
- IR 1114739; Firewatch Response Requirements need Defined for ISFSI; September 18, 2010
- IR 1116408; NRC Potential URIs From ISFSI Reactive Inspection; September 17, 2010
8 Attachment
- IR 1119586; Procedure Problems Delay ISFSI Project Startup; September 29, 2010
- IR 1121882; FHB Overhead Crane Operating Temperature Outside Procedure;
October 4, 2010
- IR 1121913; Procedure Changes Needed; October 4, 2010
- IR 1122498; NRC Questioned Items Apparently Stored Near ISFSI Pad; October 5, 2010
- IR 1122947; NRC Walkdown of ISFSI Storage Pad Area
- IR 1123339; FHB Crane Girder Temperature not met Before Use; October 7, 2010
- IR 1123564; ISFSI Mating Device Bolt Stuck
- IR 1124377; Need Temperature Instrument to meet FSAR Requirement; October 9, 2010
- IR 1125950; ISFSI Procedure Revision for BFP FH-71; October 13, 2010
- IR 1126491; ISFSI Bolts Need Evaluation to Establish Criteria; October, 12, 2010
- IR 1127060; ISFSI Annulus Cooling; October 15, 2010
- IR 1131564; ISFSI Annulus Temperature Analysis; October 27, 2010
- IR 1134848; NSRP Ops Subcommittee - ISFSI IPA Briefing; November 3, 2010
- IR 1135839; NOS Identified Issues with ISFSI Related Test Equipment; November 4, 2010
- IR 1138033; NRC Identified Rust Spots in Vents of HI-STORMS; November 9, 2010
- IR 1139597; Continuation of Root Cause Actions for IR 1107151; November 12, 2010
- IR 1139650; ISFSI Fuel Selection Gives Incorrect Max Assembly Enrichment,
November 12, 2010
- IR 1146205; Engineering Manager needs to Assign 72.212 Coordinator; November 30, 2010
- IR 1146276; Exelon Needs a Common 72.212 Report Change Process; November 30, 2010
- IR 1147090; NRC Identifies Procedure Enhancement; November 24, 2010
- 72.48-001; 72.212 Evaluation Report Change; Revision 0
- 72.48-002; 72.212 Evaluation Report Change 002; Revision 0
- 72.48-003; HI-TRAC Movement within the Fuel Building; Revision 0
- 72.48-004; Spent Fuel Cask Site Transportation; Revision 0
- 72.48-005; HI-TRAC Loading Operations; Revision 0
- 72.48-006; MPC Inspection; Revision 0
- 72.48-007; Transporter Operations; Revision 0
- 72.48-008; MPC Alternate Cooling; Revision 0
- 72.48-009; MPC Processing; Revision 0
- 72.48-010; Spent Fuel Cask Contingency Actions; Revision 0
- 72.48-011; MPC Processing; Revision 0
- 72.48-012; MPC Processing; Revision 0
- 72.48-013; HI-TRTAC Movement within the Fuel Building; Revision 0
- 72.48-014; HI-TRAC Loading Operations; Revision 0
- 72.48-015; MPC Alternate Cooling; Revision 0
- 72.48-016; Spent Fuel cask Contingency Actions; Revision 0
- 72.48-017; MPC Processing; Revision 0
- 72.48-018; HI-TRAC Movement within the Fuel Building; Revision 0
- 72.48-019; HI-TRAC Loading Operations; Revision 0
- 72.48-020; MPC Processing; Revision 0
- 72.48-021; MPC Alternate Cooling; Revision 0
- BFP FH-64; Transporter Operations; Revision 4
- BFP FH-65; Spent Fuel Cask Site Transportation; Revision 6
- BFP FH-68; HI-TRAC Preparation; Revision 2
- BFP FH-69; HI-TRAC Movement within the Fuel Building; Revision 4
- BFP FH-70; HI-TRAC Loading Operations; Revision 1
- BFP FH-71; MPC Processing; Revision 5
- BFP FH-71; MPC Processing; Revision 6
9 Attachment
- BFP FH-71; MPC Processing; Revision 7
- BFP FH-71; MPC Processing; Revision 8
- BFP FH-71; MPC Processing; Revision 9
- BFP FH-71; MPC Processing; Revision 10
- BFP FH-71; MPC Processing; Revision 11
- BFP FH-72; HI-STORM Processing; Revision 0
- BFP FH-78; Vacuum Drying System Operation; Revision 2
- BFP Fh-80; Haul Path and ISFSI Dry Run Operations; Revision 0
- BFP FH-83; Spent Fuel Cask Contingency Actions; Revision 1
- BFP FH-84; HI-TRAC Operations within the Fuel Handling Building; Revision 0
- BFP-FH-20; Operation of Fuel Handling Building Crane; Revision 24
- LS-BY-105; 72.48 Review Process for Dry Cask Storage; Revision 1
- NF-AP-622; Fuel Selection and Documentation for Dry Cask Storage; Revision 22
- Byron Nuclear Power Station, Units 1 and 2; 10 CFR 72.212 Evaluation Report; Revision 0
- Holtec Document 1676066; Responses to Potential URIs on Vacuum Drying / Annulus Flush;
September 30, 2010
- Holtec Document 1676066 R1; Responses to Potential URIs on Vacuum Drying / Annulus
Flush; October 6, 2010
- Apparent Cause Report 1100370; ISFSI Seismic Restraint Bumper Detached from Support
Arm
- ISFSI Campaign Risk Matrix
- Root Cause Report 1107151; Annulus Chiller Unit Trip and Associated Organization and
Programmatic Issues
- 2008 ISFSI Audit Comparative Report; November 6, 2008
- ISFSI Cask Loading Recovery Action Plan; August 30, 2010
- Registration of Use of Cask to Store Spent Fuel ; October 6, 2010
- Expectation for ISFSI Pad Cleanliness; October 15, 2010
- Holtec Document 1678064; VCT Tower Offset; October 22, 2010
- Holtec Document 1678064; Vacuum Drying/Annulus Flush of 21.22 kW MPC; Revision 1
10 Attachment
LIST OF ACRONYMS USED
AC Alternating Current
ADAMS Agencywide Document Access Management System
ASME American Society of Mechanical Engineers
CAP Corrective Action Program
CFR Code of Federal Regulations
ºF Degree Fahrenheit
DC Direct Current
EDG Emergency Diesel Generator
FHB Fuel Handling Building
FSAR Final Safety Analysis Report
FWIV Feedwater Isolation Valve
GL Generic Letter
HI-STORM Storage Cask
HI-TRAC Transfer Cask
IMC Inspection Manual Chapter
IP Inspection Procedure
IR Issue Report
ISFSI Independent Spent Fuel Storage Installation
ISG Interim Staff Guidance
LER Licensee Event Report
LORT Licensed Operator Requalification Training
MPC Multi-Purpose Canister
MSPI Mitigating Systems Performance Indicator
NCV Non-Cited Violation
NEI Nuclear Energy Institute
NRC U.S. Nuclear Regulatory Commission
ODCM Occupational Dose Calculation Manual
OWA Operator Workaround
PARS Publicly Available Records System
PI Performance Indicator
RETS Radiological Effluence Technical Specification
RSH River Screen House
SAT Systematic Approach to Training
S/G Steam Generator
SI Safety Injection
SPST Spent Fuel Storage and Transportation
SX Essential Service Water
SXCT Essential Service Water Cooling Tower
TS Technical Specification
UFSAR Updated Final Safety Analysis Report
USAR Updated Safety Analysis Report
11 Attachment
M. Pacilio -2-
In accordance with 10 CFR 2.390 of the NRC's "Rules of Practice," a copy of this letter, its
enclosure, and your response (if any) will be available electronically for public inspection in the
NRC Public Document Room or from the Publicly Available Records System (PARS)
component of NRC's document system (ADAMS). ADAMS is accessible from the NRC Website
at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).
Sincerely,
/RA/
Eric R. Duncan, Chief
Branch 3
Division of Reactor Projects
Docket Nos. 50-454; 50-455;72-068
Enclosure: Inspection Report 05000454/2010005; 05000455/2010005; 07200068/2010003
w/Attachment: Supplemental Information
cc w/encl: Distribution via ListServ
DOCUMENT NAME: G:\DRPIII\BYRO\Byron 2010 005.docx
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
NAME RNg:dtp EDuncan
DATE 1/31/11 1/31/11
OFFICIAL RECORD COPY
Letter to M. Pacilio from E. Duncan dated January 31, 2011.
SUBJECT: BYRON STATION, UNITS 1 AND 2 INTEGRATED INSPECTION
REPORT 05000454/2010-005; 05000455/2010-005; 07200068/2010003-2
DISTRIBUTION:
RidsNrrDorlLpl3-2 Resource
RidsNrrPMByron Resource
RidsNrrDirsIrib Resource
Cynthia Pederson
DRPIII
DRSIII
Patricia Buckley
ROPreports Resource