2015/02/21

06:00 - Plant on By-Pass Operation

 Turbine ready to start since yesterday morning

-      Generator H2 pressure 500 kPa, purity 99.8%, ready for full speed and excitation

-      System ready for pre-synchronization electrical tests

-      Plant in by-pass operation since yesterday 21h00

-      Start of the turbine planned 6h00 (in stand-by up to now due to HITACHI boiler mills problems)

11:02 - ST @2200RPM
11:35 - Warm-up completed ramping to 3000RPM
11:32 - Turbine Trip
11:42 - Turbine start to ramp up (@1800RPM)

-     We found out some problems with speed control (STSN will investigate)

-     13h30 Stop the turbine

-     Turning gear is not taking over (STSN will investigate)

-         

16:31 - start to ramp up Turbine Speed
16:50 - Turbine @3000RPM
17:15 - Stop Turbine

17:300 - LP By-Pass in operation

Boiler will run with 2 mills during the night (no oil burners)

-     Next start tomorrow 5h00

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2015/02/20

04:05 - Boiler Filling started
05:10 - Baring is off as H2 filling is still in progress
07:35 - Turning Gear in service
16:55 - BoilerFilling in progress
19:13 - Boiler Fires In
20:45 Mill 20 in sevice

2015-02-19

05:30 - HP Turbine Average Rotor Temp. = 127°C , IP Turbine Average Rotor Temp. = 117°C

13:08 - Generator CO2 Purging

16:45 Commence filling Generator with H2

17:30 - H2 Filling in progress

Main Condensate system Running CEP 1 in service

18:10 - Start Boiler Filling

19:28 - Boiler filling Complete

2015-02-17

05:30 - HP Average Temp = 171°C , IP Average Temp = 157°C

ST on Baring

08:56 - ST Baring Stopped for Gen inspection

09:09 - ST Baring on

17:30 - HP Average Temp = 159°C , IP Average Temp = 146°C

2015-02-16

05:45 - ST on Baring
HP Average Temp = 197°C
IP Average Temp = 181°C

17:30 - ST on Baring
- HP Average Temp = 184°C, IP Average Temp = 169°C

2015-02-15

Outage works:

H2 coolers inspection cleaning.

Other outage works.

Note: LAB31&40 Vents and drain open to cool down pipes
HP Average Rotor Temp = 198°C, IP=182°C