Boiler Specification

Page 1 of 18CORPORATE TECHNICAL - PUNE21-04-2008Boiler specification.xls

28 TPH BI-DRUM TYPE AFBC BOILER

BOILER SPECIFICATION

Sr. No. Description Unit DNL Specification CVL SpecificationA GENERAL DATA1 Type of System

2 Type of Boiler Bi-Drum Water Tube Boiler Bi-Drum Water Tube Boiler3 Type of Water Circulation Natural Circulation Natural Circulation4 Site Location DNL, Nandesari, Baroda DNL, Nandesari, Baroda5 Type of Support Bottom supported Bottom supported6 Type of feeding System Pneumatic under bed feeding system Pneumatic under bed feeding system7 Application Code - Pressure Parts -Design IBR 1950 with latest amendments IBR 1950 with latest amendments8 Application Code - Non Pressure Parts -Design Standard Engineering Practices. #

9 Site Elevation above mean sea level m Approx. 400 #10 Design Wind velocity km/hr As per IS 875 #11 Seismic Coefficient As per IS 1893 #12 Area Classification Safe & Non Hazardous Safe & Non Hazardous13 Environment Non Corrosive #14 Boiler Location Semi Outdoor Semi Outdoor15 Boiler performance testing BS 845 Part I Indirect Method / Equivalent

16 Design Pressure kg/cm2(g) 31 3117 TPH 24 24

18 Minimum operating Capacity - F&A 30°c TPH 10 #19 kg/cm2(g) 28 28

20 °C

21 Steam dryness fraction @ MSSV outlet % 99 #22 Make up water temperature at deareator inlet °C Room Temperature ( 30°C) Room Temperature ( 30°C)23 Feed water Temperature at inlet of Economizer °C 105 10524 Boiler Outlet Gas Temperature °C 170 17025 Continuous Blow down % 1.0-3.0 % #26 Intermittent Blow down % Approx. 6% #27 Ambient Temperature (for performance) °C 40 4028 Ambient Temperature (for Electrical ) °C 50 5029 Ambient Temperature (for Insulation ) °C 40 4030 Relative Humidity (for performance) % 60 6031 LT Power 415 V +/- 10% , 50 +/- 5%HZ 415 V +/- 10% , 50 +/- 5%HZ32 Main Fuel for MCR generation Indian Coal / Imported Coal Indian Coal / Imported Coal33 Fuel Size

34 Secondary fuel with Main fuel #

35 Consumption & GCV For Indian Coal # kg/hr / GCV 3800 kcal / kg 4996 kg / hr @ GCV 3800 kcal / kg

36 Consumption & GCV For Imported Coal # kg / hr / GCV 5800 kcal / kg 3164 kg / hr @ GCV 6000 kcal / kg

37 Six Point Gas/Air Temperature measurement To be provided Included.38 Provision for Gas/FO burner To be provided Included.

Atm. Fluidized Bed Combustion (AFBC) system

Atm. Fluidized Bed Combustion (AFBC) system

BS 2885 / IS-8753/ASME PTC 4.1 Indirect method

Steam flow at Maximum Continuous Rating (MCR) - Excluding of dearerator steam-F&A 30°c

Steam Pressure at main steam stop valve outlet / Boiler operating Pressure

Steam Temperature at main steam stop valve outlet

Saturated steam corresponding to operating pressure

Saturated steam corresponding to operating pressure

100% less than 6 mm & Free from foreign material

100% less than 6 mm & Free from foreign material

Pet Coke maximum 20 % of the total heat value basis.

Kg/hr Kcal/kg

Kg/hr Kcal/kg




Sr. No. Description Unit DNL Specification CVL Specification39 Boiler Thermal Efficiency on GCV Basis % 83 +/- 1 83 +/- 140 Start up fuel Charcoal mixed with diesel #41 Comp. Air Pressure ata 5.0 (Free from Oil & Moisture) 7.0 (Free from Oil & Moisture)42 Boiler Accessibility #

B FURNACE1 Type

2 No. of compartments Nos THREE THREE3 Materials of nozzles

4 Pressure drop in fluid bed nozzles mm WC # #5 No. of fuel feed point Nos 6 66 No. of ash drain points Nos 3 37 Access door, Peepholes Yes #C BED COIL1 Arrangement In-line In-line2 Tube size (OD X T) mm x mm 51.0 x 6.3 51.0 x 6.33 Tube Pitch mm # #4 Tube material of construction SA 210 Gr.A1 (Seamless) / Equivalent SA 210 Gr.A1#5 Header size (OD) mm 219.1 219.16 Header material of construction SA 106 Gr.B (Seamless) / Equivalent SA 106 Gr.B#D WATER WALL1 Type of construction Fin welded membrane wall construction

2 Tube size (OD*T) mm x mm 50.8 x 3.25 50.8 x 3.253 Tube material of construction BS 3059 Part 1 Gr.320 ERW BS 3059 Part # Gr. # ERW4 Header size (OD) # 168.3 / 219.15 Header material of construction SA 106 Gr.B (Seamless) / Equivalent SA 106 Gr.B #6 Design Pressure kg/cm2(g) 31 31E DRUM1 STEAM DRUM

1.1 Materials of construction SA 516 Gr.70/ Eqvt. SA 516 Gr.70/eqvt.1.2 Internal diameter / Thickness mm # 12201.3 Type of dished end Semi ellipsoidal Semi ellipsoidal1.4 Type of tube end connections Expanded Expanded1.5 Type of steam separators # Screen driers1.6 Local drum Level Gauges Nos # #1.7 No of Safety Valves Nos 2 2

2 MUD DRUM2.1 Materials of construction SA 516 Gr.70/ Eqvt. SA 516 Gr.70/ Eqvt.2.2 Internal diameter mm # 7602.3 Type of dished end Semi ellipsoidal Semi ellipsoidal2.4 Type of tube end connections Expanded Expanded2.5 Type of steam separators # Screen driers2.6 Local drum Level Gauges Nos # #2.7 Remarks

F BANK TUBES

Sufficient no. of doors are to be provided at boiler plenum Air Distribution Plate (ADP) and In bed coils and also above the in bed coils.

Water cooled membrane wall with refractory lined furnace

Water cooled membrane wall with refractory lined furnace

Air nozzle: MS Tip/MS base, Fuel nozzle: MS cap/MS body

Air nozzle: MS Tip/MS base, Fuel nozzle: MS cap/MS body

Fin welded membrane wall construction

Fully welded Mud drum with man holes and nozzle connections

Fully welded Mud drum with man holes and nozzle connections




Sr. No. Description Unit DNL Specification CVL Specification1 Arrangement In-line In-line2 Tube size (OD X T) mm x mm 50.8 x 3.25 50.8 x 3.253 Tube material of construction BS 3059 Part 1 Gr.320 ERW BS 3059 Part # Gr. # ERWG ECONOMIZER 1 Arrangement Staggered, plain tube Staggered, plain tube2 Type of flow Counter Counter3 Tube size (OD*T) mm x mm 50.8 x 4.06 50.8 x 4.064 Tube material BS 3059 Part 1 Gr. 320 ERW BS 3059 Part # Gr. # ERW5 Header size (OD) # 168.36 Header material SA 106 Gr.B SA 106 Gr.B 7 Economizer design Pressure kg/cm2(g) 31 318 Ash Hopper with isolation gate Yes Yes9 Shield Plates at the inlet of economiser Yes #

10 Access door, Yes YesH AIRHEATER1 No. of air preheater One One2 Arrangement & Type

3 Tube size (OD X T) mm x mm 60.3 x 2.34 60.3 x 2.344 Tube material IS 1239 IS 12395 No. of gas pass 1 16 No. of air pass 2 27 Tube side Fluid # #8 Ash Hopper with isolation gate Yes Yes

10 Access door, Yes YesI DOWN COMER # #J RISER # #K AIR BOX # #L FANS # #1 FD FAN

1.1 Make of Fans # CVL1.2 Nos. of fans per boiler MCR 1 x 100% 1 x 100%1.3 Capacity of fan m3/sec # 9.691.4 Static head before fan inlet mmWc # 7001.5 Medium Cold Air Cold Air1.6 Temperature °C 40 401.7 Fan speed RPM 1440 14401.8 Recommended drive motor, EFF-II Type, IP-55 Kw # 110

1.9 FD fan Base frame & coupling hardware Yes Yes2 Pneumatically operated damper Yes #

2.1 VFD for Motor Yes Yes2.2 Canvas duct at discharge, Silencer at suction Yes #

2 ID FAN2.1 Make of Fans # CVL2.2 Nos. of fans per boiler MCR 1 x 100% 1 x 100%2.3 capacity of fan m3/sec # 15.062.4 Static head before fan inlet mmWc # 4002.5 Medium Flue gas Flue gas2.6 Temperature °C 170 170

Multitubular recuperative type arranged in staggered fashion

Multitubular recuperative type arranged in staggered fashion




Sr. No. Description Unit DNL Specification CVL Specification2.7 Fan speed RPM 1440 14402.8 Recommended drive motor, EFF-II Type, IP-55 Kw # 110

2.9 ID fan Base frame & coupling hardware Yes Yes2.1 Pneumatically operated damper Yes #

2.11 VFD for Motor Yes Yes2.12 Canvas duct at discharge, Silencer at suction Yes #3 PA FAN

3.1 Make of Fans # CVL3.2 Nos. of fans per boiler MCR 2 x 100% 2 x 100%3.3 capacity of fan m3/sec # 1.533.4 Static head before fan inlet mmWc # 7003.5 Medium Hot air Hot air3.6 Temperature °C 150 - 160 150 - 1603.7 Fan speed RPM 2900 29003.8 Recommended drive motor, EFF-II Type, IP-55 Kw # 30

2.9 PA fan Base frame & coupling hardware Yes Yes2.1 Manually operated damper Yes #

2.11 VFD for Motor No NoM FEED PUMPS1 Capacity m3/hr # 33.842 Pressure Head mwc # 401.53 Feed water Temperature °C 105 1054 Motor rating, EFF-II Type, IP-55 Kw # 75.00 (415 V)5 Speed RPM 2900 29006 Quantity nos 2 (1W+1S) 2 (1W+1S)7 Type Centrifugal Centrifugal8 Minimum recirculation system with DP switch Yes Yes9 Make of feed pumps KSB KSBN DUCTING SPECIFICATION1 AIR DUCTING

1.1 Material of construction IS 2062 Gr.A / IS 1079 IS 2062 Gr.#1.2 Thickness mm 4 41.3 Yes Yes

2 FLUE GAS DUCTING2.1 Material of construction IS 2062 Gr.# IS 2062 Gr.#2.2 Thickness mm 5 52.3 Damper & expansion joints in flue gas ducting Yes Yes

O REFRACTORY1 Type of material used # Castable refractory2 Construction Standard Engineering Practice CVL standard engineering practiceP INSULATION1 Insulation material Lightly resin bonded mineral wool #2 Cladding finish Plain aluminum cladding of 22 SWG thk.

3 Density of Insulation Material kg/m3 100 #4 Outside surface temperature °C 60 60Q PAINTING SPECIFICATION

Air flow measuring device, Dampers & metallic expansion joints in air ductings

Plain aluminum cladding of 22 SWG thk.




Sr. No. Description Unit DNL Specification CVL Specification1 Sand Blasting Sand blasting #2 Two coat of red oxide Yes YesR DEAERATOR CUM STORAGE TANK1 Deaerator

1.1 Type Spray cum tray type Spray cum tray type1.2 Design standard ASME ASME1.3 Design conditions

1.3.1 Deaeration capacity kg/hr 28000 280001.3.2 Design temperature °C 220 2201.3.3 LP steam at deaerator inlet Ksc(g) 4 41.3.4 Deaerator water temperature °C 105 1052 Deaerated water storage tank

2.1 Storage capacity m3 15 152.2 Support type Saddle Saddle2.3 Location

3 Material of construction3.1 SA 516 Gr.70/eqvt. SA 516 Gr.70/eqvt.

3.2 Pipe nozzles SA 106 Gr.B/eqvt. SA 106 Gr.B/eqvt.3.3 Spray nozzles/Trays SS-304 SS-3043.4 Internals IS-2062 IS-20623.5 Piping between Deaerator & Boiler feed pumps IS-1239 IS-1239

S SAMPLE COOLERS1 Sampling points Feed water, Drum water, Saturated steam

2 Casing material Carbon steel Carbon steel3 Coil material Stainless steel Stainless steelT MOTOR CONTROL CENTRE1 Make # CVL2 IS standard IS 8623 IS 86233 Type Single front, free standing & non drawout type

4 Location Indoor Indoor5 Mounting Floor mounting Floor mounting6 Protection IP-55 IP-557 Power supply 415V+/-10%.3 phase, 4 wire, earthed neutral

8 Frequency 50 hz. +/-5% 50 hz. +/-5%9 Control voltage 230V, A.C, 50 hz, 2 wire 230V, A.C, 50 hz, 2 wire

10 Cable entry bottom bottomU FUEL STORAGE BUNKER1 No. of Bunker One One2 Type Vertical Vertical3 Material to be stored Crushed Ind. Coal / Imported Coal Crushed Ind. Coal4 Bulk density of fuel kg/m3 800 8005 Material of construction IS-2062 IS-20626 Storage volume of Bunker (water volume) m3 118 1187 Storage hours Hours 16 Hr. for Ind. Coal 16 Hr. for Ind. Coal

Will be placed above concrete ceiling of control room which will be provided by the customer

Will be placed above concrete ceiling of control room which will be provided by the customer

Plate material for shell, dished end & storage tank

Feed water, Drum water, Saturated steam

Single front, free standing & non drawout type

415V+/-10%.3 phase, 4 wire, earthed neutral




Sr. No. Description Unit DNL Specification CVL Specification8 Discharge gate type Manually operated sliding gate Manually operated sliding gate9 Stiffeners To be Provided #

10 Top cover (chequered plate) To be Provided #11 Supports To be Provided #12 Valley angle Degree Not exceeding 65 Not exceeding 6513 Yes Yes

14 Supporting structure from operating floor Yes Yes15 Fuel surge hopper Yes Yes

V FUEL FEEDERS1 Type of feeders Pocket feeder Pocket feeder2 No. of Feeders Nos 6 63 Drive arrangement VFD VFDW CHIMNEY1 Capacity

2 Design basis2.1 Fuel Coal along with Max. 20 % Pet Coke #2.2 GCV2.3 Sulphur content2.4 Corrosion Allowance (internal) Mm 3 3

3 Size3.1 Height M # 423.2 Top Diameter (OD) Mm # 13703.3 Bottom Diameter (OD) Mm # 2190

4 Supporting arrangement Self supported Self supported5 Material of construction IS 2062/eqvt. IS 2062/eqvt.6 Lightning Arrestor Yes Provided7 Aviation lamps Yes Provided8 Platforms at top & intermediate level Yes ProvidedT BAG FILTER1 Specification Bag Filter with internals Bag Filter with internals

1.1 Application To collect the fly ash from boiler gases To collect the fly ash from boiler gases1.2 Fuel Coal Coal1.3 Medium Flue gas Flue gas1.4 Type Reverse pulse jet Reverse pulse jet

2 Gas Temperature # #2.1 Normal °C 170 1702.2 Maximum °C 180 180

3 Inlet dust concentration gm/Nm3 # 56.54 Outlet dust concentration mg/Nm3 50 1005 Max. press. drop across the bag mm WG # 1506 Design pressure mmWC (-) 500 (-) 5007 Filter Media Ryton Ryton8 Bag Thickness (approx.) mm 1.8 1.89 Type of cleaning On-line, pulse jet On-line, pulse jet

10 Compressed Air requirements10.1 Quantity Nm3/hr # 60 (approx.)10.2 Moisture content gm/m3 # below 10

2 mm of SS lining upto 2 mtr. Height from the bottom conical portion pf bunker

Dedicated to 28 TPH, 28 kg/cm2 press., Sat. steam temp.

Dedicated to 28 TPH, 28 kg/cm2 press., Sat. steam temp.




Sr. No. Description Unit DNL Specification CVL Specification10.3 Oil content gm/m3 # below 0.210.4 Pressure kg/cm2(g) 5 6

11 Construction details11.1 Top plenum

11.1.1 Material Mild steel Mild steel11.1.2 Thickness mm 3 3

11.2 Casing 11.2.1 Material Mild steel Mild steel11.2.2 Thickness mm 3 3

11.3 Hopper11.3.1 Material Mild steel Mild steel11.3.2 Thickness mm 5 5

11.4 Tube sheet11.4.1 Material Mild steel Mild steel11.4.2 Thickness mm 3 312 Timer12.1 Quantity 1 No. 1 No.12.2 Type Solid state sequential Solid state sequential12.3 Pulse duration MS 20 to 200 (adjustable) 20 to 200 (adjustable)12.4 Interval Sec. 1.5 to 60 (adjustable) 1.5 to 60 (adjustable)12.5 Power supply 230 VAC 230 VAC

13 Differential pressure switch13.1 Make Switzer Switzer13.2 Type Diaphragm Diaphragm13.3 Pressure range mmWC 25 to 250 25 to 25013.4 Power supply 230 V, 50 hz, single phase 230 V, 50 hz, single phase

14 To be provided. #

15 Temperature Sensor and alarms To be provided. #16 RAL with Motor To be provided. #17 Access Platform and Doors To be provided. #18 By pass arrangement in case of hot gases To be provided. Yes19 Pressure Switch for Air To be provided. Yes20 Hopper Heaters with Thermostat. To be provided. Yes

X DUST COLLECTION SYSTEMMDC will all internals and end connections Yes Yes

Y ASH HANDLING SYSTEM NO NoZ FUEL HANDLING SYSTEM No No

AA LP DOSING SYSTEM1 LP dosing tank with agitator Yes Yes2 Dosing pumps Yes Yes3 Dosing pump motor Yes Yes

AB HP DOSING SYSTEM1 HP dosing tank with agitator Yes Yes2 Dosing pumps Yes Yes3 Dosing pump motor Yes Yes

AC ASH DISCHARGE SYSTEM1 Slide gate

Inlet & Outlet dampers, Exhaust connections to ID Fan.




Sr. No. Description Unit DNL Specification CVL Specification2 YesRotary ash discharge feeder & constant speed

geared motor below bank, Economizer, air preheater, MDC

CORPORATE TECHNICAL - PUNE21-04-2008Boilerspecification.xls


SCOPE MATRIX

Sr. No. Description Engg. Supply Fabrication E & C

1 STEAM DRUM1.1 V V V V

2 MUD DRUM2.1 Fully welded Mud drum with man holes and nozzle connections V V V V

3 BANK TUBES3.1 Bank tubes V V V V3.2 Bank tubes casing with ash hopper & chutes V V V V

4 WATER WALL4.1 V V V V

4.2 Bed Tubes and Header V V V V5 ECONOMIZER

5.1 Economizer tube assemblies with inlet & outlet headers V V V V5.2 Economizer coils support V V V V5.3 Access door V V V V5.4 Economizer casing with stiffener V V V V5.5 Economizer Ash hopper with isolation gate V V V V

6 AIRHEATER6.1 Air preheater tubes and tube sheets V V V V6.2 Access door V V V V6.3 Airheater casing with stiffener V V V V6.4 Airheater ash hoppers V V V V

7 DOWN COMER V V V V8 RISER V V V V9 INTEGRAL PIPING

9.1 Water piping9.1.1 From feed pump discharge to feed control station V V V V9.1.2 Feed water control station outlet to Economizer inlet V V V V9.1.3 From Economizer outlet to steam drum inlet V V V V9.1.4 Boiler initial filling line DNL DNL DNL DNL9.1.5 Minimum recirculation piping from BFWP station to deaerator V V V V9.1.6 Pipe supports (9.1.1 to 9.1.3 and 9.1.5) V V V V9.1.7 Pipe supports (9.1.4 ) DNL DNL DNL DNL9.1.8 NRVs and stop valves in water feed line. V V V V

9.2 Steam piping9.2.1 Steam piping beyond MSSV DNL DNL DNL DNL9.2.2 Pipe support beyond MSSV DNL DNL DNL DNL

9.3 Cooling water piping9.3.1 DNL DNL DNL DNL

9.3.2 V V V V

Fully welded steam drum with internals, man holes & necessary nozzle connections for mounting valves & fittings

Water cooled membrane enclosure with headers & necessary connections like drains

Piping between cooling water pump outlet & one point near boiler island (both supply & return lines)

Piping between one point near boiler island & individual equipment



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9.4 Blowdown/Drain9.4.1 Blowdown piping from steam drum upto blow down valve V V V V9.4.2 Blowdown valve outlet upto blowdown tank DNL DNL DNL DNL9.4.3 Drain piping from individual drain points to common header DNL DNL DNL DNL9.4.4 Support for blowdown,drain & vent piping DNL DNL DNL DNL9.4.5 DNL DNL DNL DNL

9.5 Vent9.5.1 From individual vent connections on steam drum V V V V9.5.2 Safety valve exhaust piping upto safe elevation V V V V10 AIR BOX10.1 Air box with air nozzle & fuel nozzle & ash drain pipe with gate V V V V

11 AIR DUCTING11.1 Air flow measuring device V V V V11.2 From FD fan discharge to airheater inlet V V V V11.3 From airheater outlet to FD header V V V V11.4 FD header V V V V11.5 FD header to air box V V V V11.6 From FD header to PA fan suction V V V V11.7 From PA fan delivery to PA header V V V V11.8 PA header V V V V11.9 Fuel transport lines from PA header to airbox V V V V

11.10 Dampers & metallic expansion joints in air ductings V V V V12 GAS DUCTING12.1 From bank outlet to Economizer V V V V12.2 From Economizer outlet to airheater V V V V12.3 From airheater outlet to MDC V V V V12.4 From MDC outlet to ID fan suction damper V V V V12.5 From ID fan outlet to chimney flange V V V V12.6 Damper & expansion joints in flue gas ducting V V V V

13 FUEL FEEDING SYSTEM13.1 V V V V

13.2 Bunker with supporting structure from operating floor V V V V13.3 Supporting structure upto operating floor for bunker- RCC DNL DNL DNL DNL13.4 Supporting steel structures for bunker roof & slide cladding V V V V13.5 V V V V

13.6 Fuel surge hopper V V V V13.7 FUEL FEEDERS

13.7.1 Pocket feeder with variable frequency drive control (6 Nos.) V V V V13.7.2 Fuel feeder discharge chutes upto mixing nozzle V V V V13.7.3 Couplings/hardware V V V V

One no. blowdown tank (common for continuous & intermittent blowdown)

2 mm of SS lining upto 2 mtr. Height from the bottom conical portion pf bunker

GI sheets for roof & side cladding for bunker (upto top level of bunker)



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14 SUPPORTING STRUCTURES14.1 Supporting structure from operating platform V V V V14.2 Operating platform - RCC DNL DNL DNL DNL14.3 Ladders upto operating floor DNL DNL DNL DNL14.4 Handrails for operating floor DNL DNL DNL DNL14.5 Platform above operating floor V V V V14.6 Ladders above operating floor V V V V14.7 Foundation bolts for V supplied equipments V V V V14.8 Insert plate for boiler supports DNL DNL DNL DNL14.9 Complete steel supports for ducting V V V V

14.10 Refractory supports & casing V V V V14.11 Hanger rod NA NA NA NA14.12 Supporting steel structures for boiler roof & slide cladding DNL DNL DNL DNL14.13 GI sheets for roof and slide cladding DNL DNL DNL DNL15 DRAUGHT EQUIPMENT15.1 FD FAN

15.1.1 FD fan with base frame & coupling hardware V V V V15.2.2 Damper at inlet V V V V

15.2 ID FAN15.2.1 ID fan with base frame & coupling hardware V V V V15.2.2 Damper at inlet V V V V

15.3 PA FAN15.3.1 PA fan with base frame & coupling hardware V V V V15.3.2 Damper at inlet V V V V16 MOTORISED VALVE16.1 Main steam stop valve V V V V16.2 BOILER FEED WATER CONTROL STATION

16.2.1 1 x 100% feed water control valve V V V V16.2.2 Manual Iso. Valve at downstream & upstream side of FCV V V V V16.2.3 Manual bypass valve for feed control valve V V V V16.2.4 All isolation & drain valves V V V V

16.3 STEAM DRUM16.3.1 Water level gauges V V V V16.3.2 Spring loaded mechanical safety valves V V V V16.3.3 All isolation & drain valve V V V V

16.4 OTHER SECTIONS16.4.1 All IBR valves in feed line V V V V16.4.2 All isolation, drain valves V V V V16.4.3 Air box drain valve V V V V16.4.4 Air & gas line non IBR valves V V V V



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Sr. No. Description Engg. Supply Fabrication E & C17 INSTRUMENTATION & CONTROL17.1 LOCAL FIELD INSTRUMENT

17.1.1 Thermocouple to measure bed temperature (2 Nos. per compt.) V V V V

17.1.2 Thermocouple to measure free board V V V V17.1.3 Thermocouple to measure feed water temp. before Economizer V V V V

17.2 TEMPERATURE GAUGE 17.2.1 Temperature gauge to measure fluegas temp. after bank V V V V17.2.2 Temperature gauge to measure fluegas temp. after Economizer V V V V17.2.3 V V V V

17.2.4 V V V V

17.3 PRESSURE GAUGE17.3.1 Pressure gauge to measure steam pressure at steam drum V V V V17.3.2 Pressure gauge to measure bed pressure V V V V17.3.3 V V V V

17.4 AIR PRESSURE GAUGE17.4.1 Air pressure gauge to measure FD header pressure V V V V17.4.2 Air pressure gauge to measure PA header pressure V V V V17.4.3 Air pressure gauge to measure air box pressure V V V V

17.5 FIELD INSTRUMENTS REQUIRED FOR CONTROL SYSTEM17.5.1 Three element drum level control consists of

17.5.1.1 One no. drum level transmitter V V V V17.5.1.2 One no. steam flow transmitter V V V V17.5.1.3 One no. feed flow transmitter V V V V17.5.1.4 One no. I/P converter V V V V

17.5.2 Furnace draught control consists of 17.5.2.1 One no. furnace pressure transmitter V V V V17.5.2.2 One no. I/P converter V V V V

17.5.3 Auto combustion control consists of17.5.3.1 One no. steam pressure transmitter V V V V17.5.3.2 One no. air flow transmitter V V V V17.5.3.3 One no. I/P converter V V V V

17.5.4 Deaerator level control17.5.4.1 One no. level transmitter V V V V17.5.4.2 One no. I/P converter V V V V

17.5.5 Deaerator pressure control17.5.5.1 One no. pressure transmitter V V V V17.5.5.2 One no. I/P converter V V V V

17.6 Instrument air piping from source to battery limit DNL DNL DNL DNL

Temperature gauge to measure Fluegas temp. after multitubular air preheater

Temperature gauge to measure Air temperature after multitubular air preheater

Pressure gauge to measure feed line pressure before feed control valve



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17.7 V V V V

17.8 V V V V

17.9 Junction boxes for the instruments supplied by V V V V V17.10 Compressor & driers for instrument air supply DNL DNL DNL DNL18 SAMPLE COOLERS17.1 Feed water V V V V18.2 Boiler water V V V V18.3 saturated steam V V V V

19 ELECTRICALS19.1 Motor for FD fan V V V V19.2 Motor for ID fan V V V V19.3 Motor for PA fan V V V V19.4 Motor for Feed pumps V V V V19.5 Incoming cables to LT MCC + CONTROL PANEL DNL DNL DNL DNL19.6 415V LT MCC+CONTROL PANEL for boiler & its auxiliaries V V V V19.7 Local push button stations for the motors supplied by V V V V V19.8 V V V V

19.9 V V V V

19.10 Earthing pit DNL DNL DNL DNL19.11 Subearth mat & main earth mat DNL DNL DNL DNL19.12 Lightning protection system & installation DNL DNL DNL DNL19.13 All lightings for boiler accessories DNL DNL DNL DNL19.14 Air conditioning system DNL DNL DNL DNL20 REFRACTORY20.1 Refractory & refractory holding materials V V V V20.2 Casing for refractory V V V V20.3 Insulation & cladding V V V V

21 BOILER FEED WATER PUMPING STATION21.1 Feed pumps (2 x 100% (1W + 1S)) V V V V21.2 Minimum recirculation system with DP switch V V V V21.3 Valves & mounting at feed pump outlet V V V V

22 SPARES22.1 Commissioning spares V V V V22.2 Tools & tackles DNL DNL DNL DNL

23 DEAERATOR CUM STORAGE TANK23.1 DEAERATOR

23.1.1 Shell V V V V23.1.2 Dished end V V V V23.1.3 Internals V V V V

Instrument air piping from boiler battery limit to individual consuming point

Compensating cables, impulse piping, instrument cables & signal cables from field instrument to junction boxes

Interconnecting LT power & control cables including cable trays from LT MCC to drives supplied by V

Earthing of electrical equipments supplied by V above ground level



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23.2 DEAERATOR WATER STORAGE TANK23.2.1 Shell V V V V23.2.2 Dished end V V V V23.2.3 Internals V V V V

23.3 PIPING23.3.1 DM water piping upto inlet of deaerator level control valve DNL DNL DNL DNL23.3.2 From deaerator level control valve to deaerator V V V V23.3.3 Steam piping upto deaerator pressure control valve V V V V23.3.4 V V V V

23.3.5 Feed line from deaerator storage tank to feed pump V V V V23.3.6 Process condensate return piping upto deaerator NA NA NA NA23.3.7 Vent piping from deaerator vent connection to safe elevation V V V V23.3.8 Overflow from deaerator to DM water storage tank DNL DNL DNL DNL23.3.9 Pipe supports (23.3.2 to 23.3.7) V V V V

23.3.10 Pipe supports (23.3.1 & 23.3.8) DNL DNL DNL DNL23.4 SUPPORTING STRUCTURE

23.4.1 Saddle support for deaerator storage tank V V V V23.4.2 Platform & ladders V V V V23.4.2 DNL DNL DNL DNL

23.5 VALVES & MOUNTINGS23.5.1 V V V V

23.5.2 Pressure relief valve V V V V23.5.3 V V V V

23.5.4 Safety valve for deaerator V V V V23.5.5 Two no. water level gauge V V V V23.5.6 One no. pressure gauge V V V V23.5.7 Isolation valve for drain V V V V

23.6 INSTRUMENTATION23.6.1 One no. temp. gauge V V V V23.6.2 One no. Thermocouple V V V V23.6.3 One no. level switch V V V V24 INSULATION 24.1

V V V V

24.2 Insulation for Air & gas ducting supplied by V V V V V24.3 Insulation for hot water & steam piping supplied by V V V V V

25 CHEMICAL DOSING SYSTEM25.1 LP DOSING SYSTEM

From deaerator pressure control valve to deaerator storage tank

Any other supporting structure to place the deaerator at elevated

Pressure control valve with inlet/outlet manual isolation valves & manual bypass valve

Level control valve with inlet/outlet manual isolation valve & manual bypass valve

Supply & application of insulation for steam drum, water drum, membrane water wall panel, boiler bank panel, economizer, air preheater, headers, riser & down comer



SCOPE MATRIX


25.1.1 LP dosing tank with agitator V V V V25.1.2 Dosing pumps V V V V25.1.3 Dosing pump motor V V V V25.1.4 DM piping upto the inlet of preparation tank DNL DNL DNL DNL25.1.5 Associated piping, valves, mountings, fittings within system V V V V25.1.6 Base frame V V V V25.1.7 Level gauge V V V V25.1.8 Pressure gauge V V V V25.1.9 Foundation bolts V V V V

25.1.10 Supports V V V V25.1.11 V V V V

25.2 HP DOSING SYSTEM25.2.1 HP dosing tank with agitator V V V V25.2.2 Dosing pumps V V V V25.2.3 Dosing pump motor V V V V25.2.4 Piping upto the inlet of preparation tank DNL DNL DNL DNL25.2.5 Valves, mountings, fitting within system V V V V25.2.6 Base frame V V V V25.2.7 Level gauge V V V V25.2.8 Pressure gauge V V V V25.2.9 Foundation bolts V V V V

25.2.10 Supports V V V V26 ASH DISCHARGE SYSTEM26.1 Bed ash drain pipe V V V V26.2 Slide gate V V V V26.3 V V V V

26.4 V V V V

27 ASH HANDLING SYSTEM DNL DNL DNL DNL28 FUEL HANDLING SYSTEM DNL DNL DNL DNL29 CHIMNEY V V V V29.1 Self Supported Chimney V V V V29.2 Chimney foundation DNL DNL DNL DNL29.3 Lightning Arrestor V V V V29.4 Aviation lamps V V V V29.5 Platforms at top & intermediate level V V V V29.6 Connection between Chimney & ID fan V V V V

30 CIVIL WORKS30.1 Loading data for equipment under V scope V __ __ __30.2 Grouting material (Packing plate & shims) DNL DNL DNL DNL

LP dosing pumping unit outlet to inlet of LP dosing connection on feed line

Rotary ash discharge feeder & constant speed geared motor below bank, Economizer, air preheater

Rotary ash discharge feeder & constant speed geared motor below dust collecting equipment



SCOPE MATRIX


30.3 Grouting for equipments & boiler structure steel column DNL DNL DNL DNL30.4 DNL DNL DNL DNL

31 UTILITIES31.1 Initial fill of lubricants & grease DNL DNL DNL DNL31.2 Bed material (Sieved natural sand, size - 0.7 to 2.0 mm) V V V V31.3 Charcoal & kerosene for startup DNL DNL DNL DNL31.4 Chemicals & temporary piping for alkali boilout DNL DNL DNL DNL31.5 Target plate & temporary piping for hydrotest NA NA NA NA

32 GENERAL32.1 Fire fighting system DNL DNL DNL DNL32.2 Packing & forwarding V V __ __32.3 Steam blowing DNL DNL DNL DNL32.4 Pump required for hydrotest V V V V32.5 Boiler initial fill up pump DNL DNL DNL DNL

33 FACILITIESDESCRIPTION RESPONSIBILITY

33.1

V

33.2 IBR approval at site V33.3 Stress relieving of welded joints V33.4 Unloading at site DNL33.5

V

33.6 Providing instrument for above testing V33.7 Performance test V33.8 V

33.9 Lockage & covered storage for tools & tackels of V V33.10 Storage space & access road DNL33.11 Local conveyance, boarding & lodging for V personals V33.12 Canteen charges for staff & worker of V V33.13 O & M staff for boiler startup, commissioning & operation DNL33.14 Supply of construction power & water at free of cost DNL33.15 Telephone facilities DNL33.16 Emergency/ first aid medical facilities to V staff & erection crew DNL33.17 Safety & security for V personal working at site V33.18 Lighting facilities at erection site DNL33.19 Boiler registration formalities V

Rain gutters & drain piping for boiler hopper, roof & side cladding

Providing erection tools, tackles, hoists, derricks, slings, scaffolding, rigging tools, welding sets, instruments, appliances, consumables required for unloading, transporting, storing, erection, inspection, testing & commissioning to accomplish the work

Pre-commissioning check, mass flushing alkali boilout, steam blowing, trial run of all equipment calibration of instrument & control etc.

Construction of site office & store room & dismantled after actual completion of jobs & successful commissioning of boiler



SCOPE MATRIX


33.20 Transportation DNL33.21 Transit insurance DNL33.22 Site storage insurance DNL33.23 Applicable taxes & duties DNL33.24 First fill lubricants & Chemicals for alkali boilout V33.25 Acid cleaning NA33.26 Training for persons upto PG test at site V33.27 Drainage & sanitary works DNL33.28 CEIG, pollution & factory approval DNL



TERMINAL POINTS

Description Terminal Points

1 Feed water Inlet of deaerator level control valve

2 Air Suction flange of FD fan damper

3 Main steam Outlet of MSSV

4 Deaerator steam Inlet of deaerator pressure control station at 5 kg/cm2(g)5 Fuel Inlet of fuel storage bunker

6 Flue gas Outlet of chimney

7 Ash Outlet of bed ash drain gate

8 Ash

9 Instrument air / service air At 1 m distance from boiler first column

10 Cooling water At 1 m distance from boiler first column

11 Condensate return At inlet of condensate return flange on deaerator

12 Make up water Inlet of deaerator level control station

13 LP dosing - DM water Inlet of LP dosing skid

14 Control cabling At the inlet of power cum control panel for boiler

15 Blow down

16 Drains & Vents Outlet of respective valves & flanges

17 Electricals Input terminals of LT MCC for boiler

18 Terminated at the earthing node next to equipment

19 Exhaust / Vent Terminated 1m above the boiler house roof.

Sr. No.

Outlet of ash feeder at the bottom of bank, economizer, airheater, MDC & bag filter

Terminated at the inlet of drain header, at the outlet of blow down tank

Earthing - over ground earthing

Date post:	01-Nov-2014
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Boiler Specification

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