Operating Experience

To further benefit reliability, the NATF makes select products available to the entire industry. The resources below are available for download.

Oil Spilled While Dismantling Transformer (Redacted OER-789)

Safety - Fall from Pole Incident (Redacted OER-764)

Safety - Pole Slide Incident (Redacted OER-736)

Improper Guy Anchor Installations (NATF Redacted OER-716)

Safety Incident during the Removal of 230 kV Bushing (NATF Redacted OER-686)

Safety - Near Miss - Incomplete Switching and Tagging for Neighboring Utility (NATF Redacted OER-638)

Safety - Bucket Truck Movement Incident (NATF Redacted OER-672)

Safety - Personal Injury When Lifting Test Equipment (Redacted OER-663)

Safety - Braided Rope Failure Incident (NATF Redacted OER-671)

Safety - Electrical Contact Due to Induced Voltage (Redacted OER-648)

Safety - Roll Away ATV in Right-of-Way (Redacted OER-654)

Safety - Helicopter Incident (Redacted OER-655)

Distribution Circuit Trips When Pulling 138 kV Conductor (Redacted OER-549)

Safety - Common Cause Analysis of Induction Incidents (Redacted OER-623)

Safety - Forklift Incidents (Redacted OER-601)

Safety - Bucket Contact with Distribution Wire over Roadway (Redacted OER-598)

Safety - Lineman Fall Incident (Redacted OER-607)

Safety - Bucket Truck Leveling Malfunction (Redacted OER-627)

Safety - Overhead Line Contacts and Common Cause Analysis (Redacted OER-612)

Safety - Personal Injury - Mulcher Throws Object (Redacted OER-624)

Safety - Tree Contact with Energized Line (NATF Redacted OER-602)

Safety - Near Miss - Reactor Bank Area Entered While Energized (NATF Redacted OER-605)

Safety - Truck Fell Off Lift Incident (NATF Redacted OER-553)

Safety - Line Energized with Grounds Still Attached (NATF Redacted OER-578)

Safety - Vehicle Fire Caused by Propane Torch (NATF Redacted OER-569)

Safety - Circuit Breaker Tips Over During Disassembly (NATF Redacted OER-545)

Safety - Regulator Not Placed in Neutral Position Prior to Bypassing (NATF Redacted OER-434)

Safety - Electrician Enters Minimum Approach Distance on 230 kV Circuit (NATF Redacted OER-529)

Safety - Insufficient Insulation and Drivability of Substation Aggregate (NATF Redacted OER-544)

Safety - Inadvertent Contact with Conductor Having Induced Voltage (NATF Redacted OER-497)

Safety - Faulty Safety Rope Discovered During Training (NATF Redacted OER-547)

Safety - Broken Cover Strap (NATF Redacted OER-540)

Safety - Vehicle Leaf Spring Failure (Redacted OER-525)

Safety - Crane Winch Drum Unexpectedly Free Spooled (NATF Redacted OER-506)

Transmission Line Trip Due to Grounds Left in Place (NATF Redacted OER-517)

Safety - Conductor Broke When Increasing Tension (NATF Redacted OER-498)

HP - Breaker Trip Due to Panel Vibration (NATF Redacted OER-469)

Safety - Vehicle Fire and Brake Loss While Driving (NATF Redacted OER-495)

Safety - Substation Employee Fall Incident (NATF Redacted OER-435)

Safety - Incorrect Live Line Work Location (NATF Redacted OER-499)

Transformer Failure Due to Improper Switching (NATF Redacted OER-489)

Safety - Dropped Ram during Structure Jacking (NATF Redacted OER-471)

Safety - 345-138 kV Grounding Incident (NATF Redacted OER-485)

Safety - Bucket Truck Rollover (NATF Redacted OER-448)

Safety - Equipment and Vehicle Incident Safety Bulletin (NATF Redacted OER-463)

Safety - Stored Energy Hazard in Bushing Capacitors (NATF Redacted OER-476)

Safety - Concrete Pole Accident (NATF Redacted OER-468)

Safety - Worker Injured by Fall While Accessing Bucket on Truck (NATF Redacted OER-429)

Safety - Stored Energy from Switch Handle Strikes Employee (NATF Redacted OER-450)

Safety - Electrical Contact Incident During Underground Cable Replacement (NATF Redacted OER-425)

Safety - Failure of 138 kV Vee Switch Insulator (NATF Redacted OER-420)

Safety - Cutting DC Cable While Energized (NATF Redacted OER-421)

Safety - Climbing Pole Method Causes Injury (NATF Redacted OER-405)

Safety - Lowering Material Injury (NATF Redacted OER-404)

Safety - Caisson Drop Accident (NATF Redacted OER-401)

Safety - Transmission Tower Climber (NATF Redacted OER-264)

Safety - Improper Installation of Safety Grounds (NATF Redacted OER-216)

Safety - Bee Attack on Line Crew (NATF Redacted OER-251)

Safety - Transformer Electrical Shock Incident (NATF Redacted OER-303)

Safety - Air Blast Breaker Muffler Injury (NATF Redacted OER-318)

Safety - Moisture Testing of SF6 Gas (NATF Redacted OER-365)

Safety - Employee Falls and Sustains Injury (NATF Redacted OER-308)

Safety - Pole Splicing Rigging Plates (NATF Redacted OER-272)

Human Performance - HP Leads to Accidental Tripping of Breaker (NATF Redacted OER-292)

Safety - Employee Receives Electrical Shock at Remote Site (NATF Redacted OER-309)

Safety - Operating Experience, Human and Organizational Performance (NATF Redacted OER-298)

Safety and HP - Electrician Falls From Truck (NATF Redacted OER-370)

Safety - Engulfment Risk (NATF Redacted OER-371)

Safety - Disposable Portable Propane Tank Storage (NATF Redacted OER-366)

Safety, HP, and Training - Substation Incident Involving Hot Stick Equipment (NATF Redacted OER-363)

Safety - Heat Illness (NATF Redacted OER-304)

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