1. EPRI Savannah February 20, 2013 TVA Generation Engineering Alarm Management Presented by: Randy Olson Heriberto Gonzalez Xavier Cotto TVA

2. 1. Develop Company Alarm Philosophy Draft document developed Corporate/Plant review and approval Provides Consistent process for establishing and maintaining Alarm Management 2. Obtain and Analyze Data Alarm configuration data – Used to determine priority and eliminate unnecessary alarms (Emerson, ABB, GE) obtain 4 weeks before D&R start Alarm History (4 weeks) – Used to determine solutions for Bad Actors 3. Documentation and Rationalization (D&R) D&R team: Operator, IM, DCS Engineer, Corporate Engineer, PAS Consultant Each alarm reviewed and priority established (8 weeks scheduled duration) Proposed Solution for Bad actors determined Plant exit report and D&R database file 4. Implement Results Format Database so that it can be uploaded into DCS Plant bulk loads Alarm Priority data into DCS during shutdown Work Orders written for maintenance items Design Change request initiated for engineering changes 5. Maintenance Corporate selection (for consistency) of software package to facilitate analysis of future extraction Routine extraction/analysis of events Quarterly reports TVA Alarm Management Successful Alarm Management Steps

3. 3 Systems Engineering conducted alarm management at Bull Run Fossil Site which for the analysis period had a daily alarm rate ranging between 1,385 to 21,495 alarms which exceeds Industry best practices of “Acceptable” rate of 150 alarms per day with a maximum “Manageable” rate of 300 alarms per day. Alarm management at Bull Run Fossil Site included rationalizing more than 28,000 alarm tags. The rationalization yielded a reduction of 95.44% of configured annunciated priorities for the Power House and 89.46% for the Scrubber. The result is a fully rationalized and documented alarm database that will enhance an operator’s ability to respond to abnormal situations without hindering their efforts. TVA Alarm Management Bull Run Alarm Management

4. P1, P2, P3 Alarm Count Analysis (Post 1st D&R) TVA Alarm Management Bull Run Alarm Management

5. Systems Engineering conducted alarm management at Gallatin Fossil Site which for the analysis period had a daily alarm rate ranging between 371 to 5,679 for units 1&2 and 939 to 5,861 for units 3&4 alarms which exceeds Industry best practices of “Acceptable” rate of 150 alarms per day with a maximum “Manageable” rate of 300 alarms per day. Alarm management at Bull Run Fossil Site included rationalizing more than 40,310 (units 1-4) alarm tags. The rationalization yielded a reduction 54% of configured annunciated priorities for units 1&2 and 54% for Units 3&4. The result is a fully rationalized and documented alarm database that will enhance an operator’s ability to respond to abnormal situations without hindering their efforts. TVA Alarm Management Gallatin Alarm Management

6. P1, P2, P3 Alarm Count Analysis (Post D&R) TVA Alarm Management Gallatin Alarm Management

7. TVA Alarm Management Alarm Management Web

8. TVA Alarm Management Alarm Management Web

9. TVA Alarm Management Alarm Management Web