REPORT OF FAILURES DUE TO ICE,
WIND AND LARGE BIRDS EXPERIENCED
ON THE 420 kV LINES OF TURKEY
(1981)Abstract
The paper describes the mechanical failures due to ice and
wind, which caused the collapse of 114 towers of the 420 kV
Turkish lines in 14 separate incidents, during the first 5 years
of operation. It also discusses the temporary electrical faults
caused by ice and wind.
Referring to a previous report 1 , the paper gives further
information on the severe problems resulting from the droppings
of the Egyptian vultures, which caused several hundred
temporary faults.
A statistical record of all the faults is presented.
The tower failures and faults experienced are evaluated in
relation to the mechanical loading assumptions and design criteria.
A brief summary is given of the countermeasures being
adopted.
