Abstract:
Electricity is a fundamental public utility for humankinds living. It is indispensable
for all kinds of businesses and services e.g. communication, traveling, medical services,
and most kind of industries. This study focuses on generator maintenance of a case
study services company. The service charge estimation of the company is a timeconsuming
process, lack of standard operating procedures, and it is found that the
estimated charge is often higher than actual price. It involves numerous activities and
various functions during the estimation. The time-consuming estimation means a delay
of maintenance service which affects to the capacity of the power plant, and finally
results to customer in term of penalty costs if the power plant cannot produce electricity
on demand as committed to EGAT. This study therefore proposes an estimation tool for
generator maintenance charge services in order to reduce the lead-time of estimation.
The estimation involves a work breakdown structure of generator maintenance, studying
of standard operating time and resources needed of maintenance activities. The
estimation tool applies a spreadsheet application to formulate the model. The results of
implementation the developed estimation tool show a reduction of estimation lead-time
from 14.5 days to 8.2 days for an estimation of one power plant. The results of this
study are implemented and issued as standard operating procedures and also
enhances the company in resources planning.