الفهرس 
Counter Measures Against Pollution
STATISTICAL REVIEW OF FAULTS INOnly 14 pages are availabe for public view
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Abstract
Pollution is the major problem of outdoor insulation of the
electric power transmission networks. Live line washing is
one of the measures to overcome that problem.
This thesis aims to study the factors that affect the
performance of polluted insulators during live line washing. It
aims to find an efficient and simple way for the removal of
pollution from the insulator surfaces and the possibility of
usage of ordinary water. Also. It is directed to deduct the
discharge mechanism of this process.
This thesis contains seven chapters. Chapter no.(1) includes
an introduction about the study objects and explanation of
live line washing techniques.
Chapter (2) includes statistical review of faults and pollution
faults in the Egyptian high voltage overhead transmission
network.
Chapter (3) includes a review of the previous work and
literature.
Chapter (4) includes a description of different types and
techniques of live line washing used in this thesis. The
following types were used:
1-Fixed system, which consists of different diameter
nozzles that direct water to insulators surfaces. These
nozzles are fixed on a frame supported on a transmission
tower. A high- pressure pump delivers water to nozzles
through pipes fixed on tower legs. The water is supplied
from one cubic metre capacity tank supported under the
tower.
2-Portable system that depends on using light weight
equipment loaded on a four wheel drive truck. These