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TVA Nuclear Preventive Maintenance

Report Information

Date Issued
Report Number
2022-17384
Report Type
Inspection / Evaluation
Description
Based on our review of Preventive Maintenance (PM) metric data provided by the Tennessee Valley Authority (TVA), we determined PMs were generally being performed within established schedules at TVA’s nuclear plants; however, some metrics indicated performance could be improved. In addition, we found other areas where improvements are needed, including: (1) some discrepancies between TVA’s PM metrics data in Cognos (the business analytics reporting tool used across TVA to access and analyze company data) reports and the data submitted to an industry peer organization; (2) PMs needed that were not established, causing declines of equipment condition and a regulatory finding; and (3) recurring issues that prevented or delayed PMs being performed. Additionally, we identified obsolescence-related equipment issues at TVA’s nuclear plants. Specifically, obsolescence-related equipment issues were identified in many program, system, and component health reports as having a negative impact.
Joint Report
Yes
Participating OIG
Tennessee Valley Authority OIG
Agency Wide
Yes (agency-wide)
Questioned Costs
$0
Funds for Better Use
$0
View report on Oversight.gov

Recommendations

We recommend the Vice President, Nuclear Engineering, take steps to improve Non-Critical Preventive Maintenance (PM) Deferrals, Critical PM Backlog and Non-Critical PM Backlog performance.

We recommend the Vice President, Nuclear Engineering, reconcile discrepancies in Preventive Maintenance (PM) metrics and document judgments made to exclude PMs from the metrics.

We recommend the Vice President, Nuclear Engineering, consider mitigation strategies to reduce Preventive Maintenances (PM) needed that are not established and recurring issues preventing or delaying PMs being performed.