EP 1130-2-510
13 Dec 96
governors, overhead or gantry cranes, high pressure CO2 systems, HVAC systems, elevators,
sluices and spillway gate hoists with cables or chains, machine shop tools, water treatment and
waste disposal plants, oil storage and purification systems, automatic and manual fire
extinguishing equipment; mechanical, pneumatic and hydraulic controls, and other mechanical
features of the power project. Must be able to diagnose mechanical failures of equipment and
perform repairs as needed on all mechanical operating equipment of the powerhouse, dam, and
intake structures. Be able to test repaired equipment to assure proper performance.
H-4. OPERATOR.
a. KNOWLEDGE
(1) Electrical Equipment. Be familiar with the working principles of AC and DC motors
and generators, exciters, voltage regulators, circuit breakers, transformers, switches, and relays.
(2) Mechanical Equipment. Be familiar with the working principles of water turbines,
governors, water and air pumps, lubrication systems, heating and cooling systems. Be familiar
with the structural and mechanical features of dam, intake structures, and spillways.
b. SKILLS
(1) Hydropower Unit. Able to start and connect a unit to the power system, know setting
of reactive power and actions to be taken to control runaway speed of the unit. Be able to
coordinate operation of power plant and dam to satisfy flood control, stream flow, power contract
commitments, and other requirements. Be able to take appropriate actions to restore power after
interruptions, remove faulty equipment from service, and provide computer input and update of
all data associated with the operation of the generating units.
(2) Generator. Know and recognize all components of the generator, its rating and
operating and maximum temperature limits.
(3) Exciter. Be able to control and monitor pilot and main exciters.
(4) Voltage Regulator. Know components and working of various kinds of voltage
regulators and be able to control voltage through the use of voltage rheostat.
(5) Transformers. Know and recognize all types of transformers - power, potential and
current. Recognize alarms on transformers, what causes them and actions to be taken on
receiving the alarms.
(6) Circuit Breakers. Understand control circuits, and be able to operate all circuit
breakers - oil & air, by remote or manual control.
(7) Relays. Know all relays used in power plant, reasons for relay trips and how to reset
them.
(8) Disconnect Switches. Be able to operate all switches - motor operated or manual,
without harm to self or others.
H-6
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