Tech Diary Stage 2 500mw

TECHNICAL DIARY

INDEX SL.No. 1

DESCRIPTION TURBINE AND AUXILARIES Main turbine Data Sheet for Lube oil cooler Data Sheet for control fluid cooler Deaerator LP Heater – 1 LP Heater – 2 LP Heater – 3 Drain Cooler HP Heater 5A & 5B HP Heater 6A & 6B and Gland Steam Condenser Technical Data for Condenser BFP Voith coupling Turbine of BFP (TDBFP) CEP. Vacuum Pump Data Sheet for Raw water pumps CW Pump Specification & Others details Technical Data of CW pump CW Pump Motor Additional Data to be furnished for HT Motors Air Compressor CW Blow down GENERATOR Mechanical Data for Generator Seal oil system Gas system Primary Water system Waste Gas system Cooler data of Generator Specification for ion Exchange resins Specification of Generator Transformer Technical specification of Unit Transformer Sychronous Machine data and Specification BOILER & AUXILARIES Data Sheet for Main Boiler Predicated performance Data FD Fan ID fan PA fan Seal air fan

PAGE 3-9 10 – 12 12 13 14 14 15 15 16 17 18 19 – 20 21 – 22 23 24 –25 26 – 27 28 – 30 31 32 33 34 - 35 36 -39 40 41 42 43 44 45 46 47 - 48 48 49 – 50 51 52 - 53 54 - 56 57 - 63 64 - 65 66 - 68 69 - 70 71

Scanner Air fan External lube oil System of Bowl mills Oil Burners Ignitors Oil Gun Performance Data Chart Heat Exchanger Data (HFO) Pressuring pump (HFO) Pressuring Pump ( LDO) Drain oil pump Boiler Water Circulating Pump Soot Blowers , HP & LP By Pass system Safety Valves Cooling water booster pump ACW System ECW System Secondary Air pre-heaters AIR CONDITIONING SYSTEM Screw compressor chilling unit Vapour absorption machine Technical Data Sheet for reciprocating refrigerant compressor for ESP – VFD Building Technical Data Sheet for condenser for ESP & VFD control room Technical Data Sheet for cooling tower Technical data Sheet for cooling Tower of ESP & VFD Building Technical Data Sheet for Centrifugal fan for AHU Technical Data Sheet for fresh Air fan Technical data sheet for Air Cooled packaged Air conditioner of DM & CPU Control Building DM PLANT Data sheet for DM Plant & PT plant Pre Treatment plant ASH HANDLING SYSTEM BAHP,BALP, Flushing & Sump jetting water pump Bottom ash system Sludge pump Fly Ash System HP/LP seal water system Sump pump Seal water pump Cooling water pump Fly Ash water pump Cooling / Sealing water pump ESP Coal Handling System System of CHP CHP, Stage #2 major electrical , Equipment tech. Specification a transformers Stacker Reclaimer – 3 (S/R)

72 - 75 76 - 77 78 78 - 79 80 81 - 82 83 - 84 85 - 86 87 - 88 89 - 91 92 93 94 95 96 - 101 102 - 103 104 - 106 107 - 108 109 110 - 111 112 - 113 114 115 116 - 118 119 - 120 121 - 122 123 - 127 128 - 130 131 - 132 133 - 134 135 - 137 138 - 139 140 - 141 142 - 143 144 - 145 146 - 147 148 - 161 162 - 178 179 - 181 182 - 185

3.0

TURBINE AND AUXILIARIES

3.1

Specification of main turbine a) Make b) stages

Three cylinder reheat condensing turbine -i)Single flow HP Turbine with 17 reaction stages ( Type: H30-100-2) ii)Double flow IP Turbine with 12 reaction stages per flow.( Type : M30-63) iii) Double flow LP Turbine with 6 reaction stages per flow.( Type N30-2 × 10 )

c) 2 Main stop and control valves 2 Reheat stop and control valves 1 Swing check valve in cold reheat line 2 Bypass stop and control valves d) nominal rating e) turbine throttle steam pressure

Type : EV 320-1 Type : IV 560 DN –800(Make BHEL) DN-400 500 170

f) turbine throttle main steam temp/ reheat temp. g) Pressure drop in reheat ckt i.e. between H.P. turbine exhaust & IP turbine inlet. h)Back pressure i) Turbine speed j) Speed limitation in no load & station operation Max. speed , no time limitation Min. speed , no time limitation Permissible for a max. 2 hours during the life of LP blading. Speed below Speed above k) Speed exclusion range at operation without load l) Standard over speed trip setting m)Direction of rotation Steam Pressures & Temperature (Rated Values) a) Initial steam b) first stage pressure c) HP cylinder Exhaust d) IP stop valve inlet e) extraction 6 f) extraction 5 g) extraction 4 h) extraction 3 i) extraction 2 J ) extraction 1 k) L. P. cylinder Exhaust

MW Kg/cm2 (abs) °C

537 /537 10% H.P.T exhaust pressure.

mm of Hg(abs) RPM

77

c/s c/s c/s

47. 5 51. 5 to 60 7 to 47. 5

c/s

Max. 55. 5 Anti clock wise when viewed from front pedestal towards the Generator

Bar Bar Bar Bar Bar Bar Bar Bar Bar Bar Bar

166.7 154.4 44.0 39.6 44.0 17.3 7.16 2.56 1.323 0.255 0.1026

3000

(Note: These values correspond to 500 MW load with 3% make –up and 0.1026 bar back pressure with all heaters in service and rated steam conditions.) All pressures are absolute pressures.

Low vacuum trip, standard setting Hydraulic low vacuum trip Electrical low vacuum trip Hydraulic low vacuum trip bypass operation

Seal steam supply system Pressure in seal steam header (above atmospheric) Axial Shift Alarm Trip

bar bar bar

0.3 0.3 0.6

mbar

35

+ 0.5 + 1mm

Steam Temperatures Rated value , Annual average Main steam at HP stop valve inlet HRH steam at IP stop vave inlet

HP turbine exhaust Extraction 6 Extraction 5 Extraction 4 Extraction 3 Extraction 2 Extraction 1 LP turbine exhausted

537.0

Long-term value , subject to annual average 545.3

400 hrs, per year 551.0

80 hrs per Max. 15 min in individual case 565.0

537.0

545.3

551.0

565.0

Rated value♦

Long-term operation

80 hrs per year, Max. 15 min in individual case

336.4

353.4

436.4

336.4 412.8 290.8 185. 2 126.0 65.4 46.4

353.4 417.8 300.8 196.2 146.0 85.4 70.0

436.4 452.8 340.8 240.2 186.0 130.4 70.0

In special cases at no load 500.0 500.0

0

C

0

C

0

C

0

C C 0 C 0 C 0 C 0 C 0 C 0

Long term operation : upper limited value permissible without time limit . ♦ These values correspond to 500 MW Load with 3% make-up and 0.1026 bar back pressure with all heaters in service and rated steam conditions. ♥ Only valid for the no load period with reheated pressure after trip-out full load operation. For individual case aprox. 15 minutes. The turbine is immediately re-loaded or the boiler immediately reduced to minimum load if no load operation is maintained.

Casing metal temperatures Wall temperature a) HP Turbine casing exhaust b) Outer casing of LP cylinder

Alarm at 485 90

M/C must be shut down at 500 110

Alarm at

M/C must be shut down at

°C

±90

±100

°C

±30

±45

°C

±30

±45

°C °C

Casing Metal Temperature Differences a) Between upper and lower casing halves of HP turbine , middle. b) Between upper and lower casing halves of IP turbine , front c) Between upper and lower casing halves of IP turbine , rear

Permissible differential temperature between parallel steam supply lines

0 No time limitation 17 C 0 Short time period (15 min) 28 C In the hottest line the limitation indicated for main and reheat system temperature must not be exceeded

Feed water Heater out of service Operation with feed water heaters out of service Extraction A6=0 Extraction A5=0 Extraction A3=0 Extraction A2=0 Extraction A1=0

Main steam flow , Kg/s (indicative ) 395 421 423 425 423

Extraction A6,A5-0

Load MW 500 500 500 500 500

400

526.6

Output Limited during Testing with Automatic Turbine Tester Testing of main steam stop 400 MW and control valves Testing of HRH steam stop 200 to 500 MW and control valves

Alarm at

M/C must be shut down at

ºC ºC

90 100

130 130

ºC

110

130

ºC

115

130

Bearing babbit metal temperatures a) Normal operating temperature below 75ºC a) Normal operating temperature below 75ºC to 85ºC b) Normal operating temperature below 85ºC to 90ºC d) Normal operating temperature above 90ºC

Vibration a) Standard alarm setting

µm

b) Max. alarm setting c) Limit value for tripping

µm µm

Absolute brg. housing vib.

Absolute shaft vib.

42 53

25µm above normal level 100 160

Weight a) HP turbine ,completely assembled

Tonnes

94.6

b) IP turbine , top half outer casing c) IP turbine ,top half inner casing , complete with blading d) LP turbine , top half outer casing complete e) LP turbine , top half outer casing complete with blading , guide blade carriers & diffusers f) HP turbine rotor complete with blading g) IP turbine rotor, complete with blading h)LP turbine rotor , complete with blading i) Main stop and control valve , complete with servo motors, without bend & pipe section j) Reheat stop and control valve , complete with servo motors , without bend & pipe section

Tonnes Tonnes

25.7 15.5

Tonnes Tonnes

42.6 37.0

Tonnes Tonnes Tonnes Tonnes

16.3 23.1 90.0 22

Tonnes

32

Steam Purity (Recommended Values) QUANTITY

TARGET VALUE < 0.2

NORMAL OPERATION

START UP

Conductivity at 25 0C , 0.1