Haverfield’s helicopter power line inspection services include a helicopter and crew using a combination of gyroscopic stabilized optical equipment and naked-eye methods to make their visual observations. These activities are completed according to a broad and all-inclusive system of condition reporting criteria.
Comprehensive Visual Inspection (CVI)
The CVI is one of the most innovative line Inspection methods that Haverfield Aviation utilizes. The CVI utilizes a Helicopter and CVI crew who are specially trained in detecting issues with a transmission line and/or structure. A highly-detailed assessment of the structure, conductor and associated hardware, including pictures of any anomaly and description, are reported. The CVI is flown at a slower pace and within a closer proximity to the transmission lines than our other patrol services. A combination of gyroscopically stabilized optical equipment, high resolution cameras, and naked-eye methods are used to make visual observations. These activities are documented based on a broad and all-inclusive system of condition reporting criteria that can include several levels of detail as needed. Haverfield Aviation has the capability to adapt criteria to customer-specific requests. The value of using Haverfield Aviation regularly for your CVI needs is our familiarity with your system and the partnership that develops in supporting your reliability targets. Any emergency conditions are reported as soon as possible so that any necessary response may be taken quickly.
Commonly Identified During CVIs
Backed Out or Missing Cotter Keys
Backed out Pins on Shield Wires
Backed out/Missing Phase Hardware
Broken/Cracked Insulator Skirts
Insulator String Contamination
Bullet Damage From Gun Shots
Missing, Broken, or Bent Dampers
Foreign Objects on Wire & Structures
Lightning Strike Damage
Rotted Pole Tops or Structure Arms
Structural Damage on Towers
Haverfield has performed aerial patrols since the Company’s inception more than 30 years ago. Haverfield is able to efficiently inspect 150-200 miles of transmission lines per day and conducts routine and emergency patrols.
Power Line Patrols provide a high-level overview of the condition of structures, conductors and right-of-ways. Haverfield Aviation provides Routine, Post-Construction, Emergency and Forestry Patrols for the majority of our utility customers. Patrols are typically flown at a faster speed and at a farther distance from the line than other services. The value of using Haverfield Aviation regularly for your Patrol needs is our familiarity with your system and the partnership that develops in supporting your reliability targets. Any emergency conditions are reported as soon as possible so that any necessary response may be taken quickly.
Commonly Identified During Patrols
Structure/Component Deterioration and Damage
Clearance and Right of Way Issues
Broken, Loose, Missing, or Cracked Components
Aerial, Crossing, and Danger Sign Inventories/Issues
Environmental and Ecological Issues
Marker Ball Inventories/ Issues
Infrared & Corona Inspections
Infrared services are used to detect “hot spots” on transmission lines and components that are not visible to the naked eye during Patrols or CVIs. Haverfield Aviation has invested in the Trakka Multispectral Imaging System as well as training to ensure a quality deliverable.