IR 05000289/2012003: Difference between revisions
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==1R05 Fire Protection | ==1R05 Fire Protection | ||
===.1 Resident Inspector Quarterly Walkdowns=== | ===.1 Resident Inspector Quarterly Walkdowns=== | ||
{{IP sample|IP=IP 71111.05Q|count=4}} | {{IP sample|IP=IP 71111.05Q|count== | ||
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====a. Inspection Scope==== | ====a. Inspection Scope==== | ||
Revision as of 17:28, 17 November 2019
| ML12214A466 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 08/01/2012 |
| From: | Hunegs G NRC/RGN-I/DRP/PB6 |
| To: | Pacilio M Exelon Nuclear, Exelon Generation Co |
| HUNEGS, GK | |
| References | |
| IR-12-003 | |
| Download: ML12214A466 (34) | |
Text
{{#Wiki_filter:UNITED STATES ust 1, 2012
SUBJECT:
THREE MILE ISLAND STATION, UNIT 1 - NRC INTEGRATED INSPECTION REPORT 5000289/2012003
Dear Mr. Pacilio:
On June 30, 2012, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at your Three Mile Island, Unit 1 (TMI) facility. The enclosed inspection report documents the inspection results, which were discussed on July 20, 2012, with Mr. Rick Libra, Site Vice President, and other members of your staff.
The inspection examined activities conducted under your license as they relate to safety and compliance with the Commissions rules and regulations and with the conditions of your license.
The inspectors reviewed selected procedures and records, observed activities, and interviewed personnel.
Based on the results of this inspection, no findings were identified.
In accordance with 10 CFR 2.390 of the NRCs 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 (PARS) component of NRCs document system (ADAMS). ADAMS is accessible from the NRC Website at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).
We appreciate your cooperation. Please contact me at 610-337-5046 if you have any questions regarding this letter.
Sincerely, /RA/ Gordon K. Hunegs, Chief Projects Branch 6 Division of Reactor Projects Docket No: 50-289 License No: DPR-50
Enclosure:
Inspection Report 05000289/2012003 w/Attachment: Supplemental Information
REGION 1 Docket No: 50-289 License No: DPR-50 Report No: 05000289/2012003 Licensee: Exelon Generation Company Facility: Three Mile Island Station, Unit 1 Location: Middletown, PA 17057 Dates: April 1 through June 30, 2012 Inspectors: D. Werkheiser, Senior Resident Inspector J. Heinly, Resident Inspector C. Cahill, Senior Reactor Analyst S. Galbreath, Reactor Engineer T. Hedigan, Operations Engineer D. Jackson, Chief, Operator Licensing Branch N. Lafferty, Project Engineer T. Moslak, Senior Health Physicist J. Richmond, Senior Reactor Inspector Approved by: G. Hunegs, Chief Reactor Projects Branch 6 Division of Reactor Projects Enclosure
SUMMARY OF FINDINGS
IR 05000289/2012003; 04/01/2012 - 06/30/2012; Three Mile Island, Unit 1, Integrated
Inspection Report.
The report covered a three-month period of baseline inspection conducted by resident inspectors and announced inspections by regional specialist inspectors. The NRCs program for overseeing the safe operation of commercial nuclear power reactors is described in NUREG-1649, Reactor Oversight Process, Rev. 4, dated December 2006.
No findings were identified.
REPORT DETAILS
Summary of Plant Status
Three Mile Island, Unit 1 (TMI) began the inspection period at approximately 100 percent rated thermal power. The unit conducted a planned downpower to 35 percent power on May 26, 2012 to replace processor cards in the digital turbine control system of the main turbine. The unit was returned to 100 percent the same day and continued to operate at that power for the rest of the inspection period.
REACTOR SAFETY
Cornerstones: Initiating Events, Mitigating Systems, and Barrier Integrity
1R01 Adverse Weather Protection
.1 Readiness for Seasonal Extreme Weather Conditions - Hot Weather Preparation
a. Inspection Scope
The inspectors performed a review of Exelons readiness for the onset of seasonal high temperatures. The review focused on the ultimate heat sink systems, ventilation systems, and the emergency diesel generators (EDGs). The inspectors reviewed the Updated Final Safety Analysis Report (UFSAR), technical specifications, control room logs, and the corrective action program to determine what temperatures or other seasonal weather could challenge these systems, and to ensure Exelon personnel had adequately prepared for these challenges. The inspectors reviewed station procedures, including Exelons seasonal weather preparation procedure and applicable operating procedures. The inspectors performed walkdowns of the selected systems to ensure station personnel identified issues that could challenge the operability of the systems during hot weather conditions. Documents reviewed for each section of this inspection report are listed in the Attachment.
b. Findings
No findings were identified.
.2 Summer Readiness of Offsite and Alternate Alternating Current (AC) Power Systems
a. Inspection Scope
The inspectors performed a review of plant features and procedures for the operation and continued availability of the offsite and alternate AC power system to evaluate readiness of the systems prior to seasonal high grid loading. The inspectors reviewed Exelons procedures affecting these areas and the communications protocols between the transmission system operator and Exelon. This review focused on changes to the established program and material condition of the offsite and alternate AC power equipment. The inspectors assessed whether Exelon established and implemented appropriate procedures and protocols to monitor and maintain availability and reliability of both the offsite AC power system and the onsite alternate AC power system. The inspectors evaluated the material condition of the associated equipment by reviewing issue reports and open work orders and walking down portions of the offsite and alternate AC power systems.
b. Findings
No findings were identified.
1R04 Equipment Alignment
a. Inspection Scope
.1 Partial System Walkdowns
The inspectors performed partial walkdowns of the following systems: B control building emergency ventilation on April 16, 2012 B emergency diesel generator (EDG) during A EDG maintenance outage on May 1, 2012 B EDG during unplanned A EDG troubleshooting on June 7-8, 2012 The inspectors selected these systems based on their risk-significance relative to the reactor safety cornerstones at the time they were inspected. The inspectors reviewed applicable operating procedures, system diagrams, the UFSAR, technical specifications, work orders, condition reports, and the impact of ongoing work activities on redundant trains of equipment in order to identify conditions that could have impacted system performance of their intended safety functions. The inspectors also performed field walkdowns of accessible portions of the systems to verify system components and support equipment were aligned correctly and were operable. The inspectors examined the material condition of the components and observed operating parameters of equipment to verify that there were no deficiencies. The inspectors also reviewed whether Exelon staff had properly identified equipment issues and entered them into the corrective action program for resolution with the appropriate significance characterization.
b. Findings
No findings were identified. ==1R05 Fire Protection