14/03/2015

steady operation, no interruption:

-          Load between 200 & 350 MW.

-          Boiler tuning and mill testing.

-          Turbine in operation (load control).

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13/03/2015

FORECAST PROGRAMME

ACTUAL @7:30

-          Unit was running @ 120 – 150MW during the night

Program for today : Boiler tuning with one and 2 mills (Hitachi)

ACTUAL @23:00

-          8:27 Turbine on protection HP Exhaust High due to boiler load reduction

-          9:12 Synchronization

-          9:18 Turbine on protection HP Exhaust High due to boiler load reduction

-          Boiler shut down to restart with 2 draft groups, second mill cannot be started with only one draft group

-          16:30 Boiler fire in

-          19:00 Synchronization

-          20:32 Load 300MW

-          22:11 Boiler air heater motor high current, load reduced to 150MW

-          22:14 Turbine on protection HP Exhaust High due to boiler load reduction

-          22:30 Boiler shut down

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12/03/2015

FORECAST PROGRAMME

ACTUAL @7:00
11/03/2015@22:52 Turbine trip due to high exhaust temperature HP

-          GCB didn’t open, and we get low reverse power (reverse power was not detected by gen protection device)

-          The case is under investigation

ACTUAL @18:00

-          Reverse power issue resolved by setting changes in the gen. protection relay

-          17:00 Synchronization

-          Reverse power test successful

-          17:20 Synchronization

-          Power increase to 150MW

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11/03/2015

FORECAST PROGRAMME

ACTUAL:

Status 11/03/2015 5:30

-          Hitachi PTW for crack repair closed @ 5:00

-          Boiler filling ongoing

-          Turbine start expected @ 14:00

-          Synchronization expected @ 14:15

ACTUAL@ 24:00
-          Unit was synchronized @ 16:52

-          18:06 Turbine trip due to LP heater 1 level transmitter problem

-          18:15 Synchronization and load increase up to 300MW with 2 mills in service

-          22:00 One  mill trip, load reduced to 180MW

-          Draft group trip due to gas air heater

-          Second mill trip

-          22:52 Turbine trip due to high exhaust temperature HP

-          GCB didn’t open, and we get low reverse power (reverse power was not detected by gen protection device)

-          The case is under investigation

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