Over Speed Trip Test Device Components and purpose .
S.NoOver Speed Trip Test Device PurposeColour Code1.Block lever
KA 03To avoid draining of Aux. Trip Oil2.Reset lever KA 02To Reset
Hydraulic Trip Device3.Test valve KA 01To generate Test
oil4.Drain
MOPCONTROL OILSTEP-1 Press Reset Lever (KA-02) and ensure the
availability of Aux. Startup Oil Pressure(>6 ksc). Watch
gaugeAUX STARTUP OIL PRESSURE KSC0365*KA01KA02KA03AUX STARTUP OIL
MOPROTORDRAINOVERSPEED TRIP DEVICEAUX. TRIP OILAUX STARTUP OIL
CONTROL OILSTEP-2Release Reset Lever (KA-02)* KSC0365AUX STARTUP
OIL PRESSUREKA01KA02KA03AUX STARTUP OIL MOPMOPROTORDRAINOVERSPEED
TRIP DEVICEAUX. TRIP OIL
CONTROL OILSTEP-3Press Block Lever (KA-03) to bottom most
position. Keep it in pressed condition till the test is over.*HOLD
KA03 IN PRESS CONDITION TILL TEST ENDAUX. TRIP OILKA01KA02KA03AUX
STARTUP OIL MOPMOPROTORDRAINOVERSPEED TRIP DEVICE
CONTROL OILDONT RELEASE KA03 LEVER*AUX. TRIP OIL KSC0132TEST OIL
PRESSUREBOLT 1 OPERATEDBOLT 2 OPERATEDSTEP-4Rotate Hand-wheel KA-01
in CLOCKWISE direction and keep watch on Test OilPressure. The
over-speed bolts will operate one by one at different test oil
pressure (1-2 ksc). KA01KA02KA03AUX STARTUP OIL
MOPMOPROTORDRAINOVERSPEED TRIP DEVICERAISE TEST OIL PRESSURE
CONTROL OILDONT RELEASE KA03 LEVER*AUX. TRIP OIL KSC0132TEST OIL
PRESSUREBOLT 1 OPERATEDBOLT 2 OPERATEDSTEP-5Rotate Hand-wheel KA-01
in ANTI-CLOCKWISE direction and bring it back to initial
position.KA01KA02KA03AUX STARTUP OIL MOPMOPROTORDRAINOVERSPEED TRIP
DEVICE
MOPCONTROL OILAUX STARTUP OIL PRESSURE KSC0365*AUX. TRIP
OILKA01KA02KA03AUX STARTUP OIL MOPROTORDRAINOVERSPEED TRIP
DEVICESTEP-6 Press Reset Lever (KA-02) and ensure the availability
of Aux. Startup Oil Pressure (>6 ksc). Check the device
resetting on front pedestal and Bolt resetting indication on
governing rack.DONT RELEASE KA03 LEVERBOLT 1 RESETBOLT 2 RESETBOLT
1 OPERATEDBOLT 2 OPERATED
AUX. TRIP OIL*STEP-7Release Block Lever (KA-03) and bring it to
topmost positionKA01KA02KA03AUX STARTUP OIL
MOPMOPROTORDRAINOVERSPEED TRIP DEVICECONTROL OIL
CONTROL OILSTEP-8Release Reset Lever (KA-02) and bring it to
topmost position* KSC0365AUX STARTUP OIL PRESSURETEST
COMPLETEDKA01KA02KA03AUX STARTUP OIL MOPMOPROTORDRAINOVERSPEED TRIP
DEVICEAUX. TRIP OIL
*PROBABLE CAUSE OF HUMAN ERROR DURING OIL INJECTION TEST
