Dadri stage 1 High energy drains

 

DADRI - COAL
High Energy Drain Valve Passing
[ STAGE - I ]
	Date	31.08.2025
S. No	Details of Passing Valve & Tag No	Unit-1
1	MAL-11(UPSTREAM OF HP TURBINE CONTROL VALVE)
2	Mal-26(UPSTREAM OF IP TURBINE CONTROL VALVE)
3	MAL-15(DN STREAM OF HP TURBINE CONTROL VALVE)
4	MAL-16(DN STREAM OF HP TURBINE CONTROL VALVE)
5	MAL-22(HP TURBINE CASING DRAIN VALVE)
6	MAL-31(DN STREAM OFIP TURBINE CONTROL VALVE)
7	MAL-32(DN STREAM OF IP TURBINE CONTROL VALVE)
8	MAL-65(CRH NRV UP STREAM)
9	MAL-66(CRH NRV UP STREAM)
10	MAL-12(UPSTREAM OF HP TURBINE CONTROL VALVE)
11	MAL-27(UPSTREAM OF IP TURBINE CONTROL VALVE)
12	MAL-47(HPH-5 EXTRACTION NRV UP STREAM)
13	MAL-51(DA EXTRACTION NRV UP STREAM)
14	MAL-54(LPH-3 EXTRACTION NRV UP STREAM)
15	MAL-81(DRAIN FROM GLAND SEAL STEAM HEATER)
16	MAL-55(LPH-2 EXTRACTION NRV UP STREAM)
17	HRH-101(HRH LINE STRAINER DRAIN HP DRAIN FLASH BOX)
18	HRH-102(HRH LINE STRAINER DRAIN TO HP DRAIN FLASH BOX)
19	HRH-103(HRH LINE STRAINER DRAIN TO IBD TANK)
20	HRH-104(HRH LINE STRAINER DRAIN TO IBD TANK)
21	HRH-105 (LP BYPASS WARM UP LINE)
22	HRH-106(LP BYPASS WARM UP LINE)
23	MS-101(MS LINE STRAINER DRAIN HP DRAIN FLASH BOX)
24	MS-102(MS LINE STRAINER DRAIN HP DRAIN FLASH BOX)
25	MS-103(MS LINE STRAINER DRAIN TO IBD TANK)
26	MS-104(MS LINE STRAINER DRAIN TO IBD TANK)
27	CRH-101 (CRH LINE NRV DRAIN)
28	CRH-102 (CRH LINE NRV DRAIN)
29	BFP-1A
30	BFP-1B
31	BFP-1C

Night Report steps

 1. Open Gmail nightreportdadri@gmail.com, Password: report@123

2. Open night report google sheet

3. Goto check tab, copy today's column values and paste special values only to previous column values

4. Now goto insert>>extensions>>macros>>Reset Previous>> yes. IT Will reset previous day record 

5. Go to share. Share the file by allowing others as editor. Fill all entries of insert, CHP. 

6. In CHP tab, old stock is to be updated from previous coal stock value

7. Now download DC, SG file from energy scheduling site of nrldc and paste entire sheets in DC, SG files

8. Now, in EMS_MY tab, make entry of colonh, HVDC

9. Copy next day monthly yearly data to present day

10. Now report is generated 

11. Download excel

Dadri 1 Oil Injection Test

Dadri 1: Boiler Protection signed copy

 

NTPC dadri Information

 NTPC Dadri power plant, also known as National Capital Power Station (NCPS), is a coal and gas-fired thermal power plant located in Uttar Pradesh, India. National Thermal Power Corporation (NTPC) is the project owner.

With a total installed capacity of 2.63GW, the Dadri power plant is one of the biggest thermal power plants in India and the only coal and gas-fired power plant in the country. Of the total power generated, 1,820MW comes from the coal-fired plant and the remaining 817MW from the gas-fired plant.

Dadri S/Y Line loading

 

                                                      NTPC-DADRI TRANSMISSION LINE LOADING

 

Lines                         conductor           SIL             CA           Cent clair     stability       thermal             operation

                                                                                                    graph mw       mw          limit mw             limit mw

 

Maharanibag  54km                            692          2371              2371        5896               1962                 1962

Mandaula 1&2  46km                         692           2533             2533        6923                1962                 1962

Greater Noida 13 km                          692           3679             3679       24179              1962                 1962

Malerkotla 297 km                             517             560                692           811                852                    852

Panipat 1&2  112 km                          517             1247            1247          2145             852                 852

Murad nagar  33 km                           517              2143            2143          7280             852                 852

Dadri Switchyard

DSI SOP

 STANDARD OPERATING

PRACTICE (DSI)

NTPC DADRI

STAGE I – 4X210 MW

DRY SORBENT INJECTION SYSTEM

DSI EQUIPMENTS

1. Instrument air compressor

2. Viper mill

3. Oil pump viper mill

4. Blower ( injection and unloading )

5. Dehumidifier ( injection and unloading )

6. Heat Exchanger ( injection and unloading )

7. SBC silo

8. Weigh hopper

9. Rotary air lock ( RAL )( Injection and unloading )

10. Rotary vane feeder ( RVF )

11. Jumbo bag hopper

12. Splitter

Dadri-2: Instrument Air Failure affect

 

INSTRUMENT AIR FAILURE

NCPS Stage-2 (2X490 MW)

Dadri-1: Mill c/o guidelines

 

Mill starting procedure :

·         Clearance from local operator is to be recorded before starting mill.

·         Ensure feeder coal on belt is established.

·         Ensure  ignition permit is available.

·         Open bunker outlet & feeder inlet gate.

·         Start Mill LOP and observe lub oil pressure , temperature and flow.

·         Open CAG ( CADshould be closed), monitor PA header pressure.

·         Start Mill and monitor its current (60-65 Amp normal current).

·         Open feeder seal air valve & feeder outletgate.

·         Open HAG,( HAD should be closed), monitor PA header pressure.

·         Observe boiler flame intensity during mill operation.

Dadri: biomass Operating Procedure

 

1)    Mill Operating Parameters and Operation procedure: -

Ø  Maintain Mill outlet temperature-> 55 C

Ø  Mill inlet temperature -> not more than 180 C

Ø  Observe all 4 coal pipe temperature of Mills with biomass regularly. In case of any deviation from rest of the pipes (any abrupt rise or fall), stop the mill and give PTW for inspection.

Ø  Pre start and post shutdown purging of mill is mandatory.

Ø  Continuous monitoring of mill parameters most importantly mills inlet air temperature, mill outlet temperature, mill current and mill DP.

Ø  Mill inlet temperature should not be more than 180 C in any case

Ø  Mill reject system to be kept under observation continuously

Ø  Operator should be deployed at local for monitoring in wake of fire hazard.

Ø  In case of fire, mill should be tripped and steam inerting should be done immediately by opening steam interting motorized valve, keeping watch on furnace pressure.  Fire tender may also be used if required.  

Ø  Clinkering and slagging tendency to be observed from local as well as from rise in SH zone FG temperature. Soot blowing and LRSB to be done accordingly.

Dadri-1: Boiler Safety valve float data

 

              BOILER SAFETY VALVES FLOATING PROTOCOL.

UNIT                                                                                                              DATE:

 

S.NO.	VALVE NO.	DESIGN PR.(KSC)		ACTUAL PR.(KSC)
		OPERATING PR.	RESET PR.	OPERATING PR.	RESET PR.
1	SV-1	176	169.3
2	SV-2	179.9	170.9
3	SV-3	181.7	172.6
4	SV-4	163	158.1
5	SV-5(ERV-1)	161.4	158
6	SV-6(ERV-2)	161.4	158
7	SV-7	49	46.6
8	SV-8	46.3	44.0
9	SV-9	46.66	44
10	SV-10	48.42	46.0
11	SV-11(ERV-3)	45.8	44.9
12	SV-12(ERV-4)	45.8	44.9

 

Dadri-1: DOR

 

DOR OF HT/LT MOTORS

 

CONVENTION:

DOR TAKEN FROM NDE SIDE OF MOTOR

C: CLOCKWISE                                            A: ANTI CLOCKWISE

HT MOTORS

ID A/B	A	MILL A/B/C/D/E/F	C	PA A	C
FD A /B	A	ECW A/B/C	C	PA B	A
CEP A/B	C	BFP A//B/C	C	CW A/B	A
				TAC A/B	C

LT MOTORS

1.   BOILER

ID  LOP-A/B	C	FEEDER MAIN MTR	C
ID  AOP A/B	C	FEEDER COC MTR	C
FD  LOP A/B	C	SCANNER FAN AC	C
PA LOP A/B	C	SCANNER FAN DC	C
PA AOP A/B	C	SEAL AIR FAN A/B	A
MILL  LOPA/B	C	APH A MAIN MTR	A
APH GB LOP A/B	C	APH A S/B MTR	A
APH SB LOP A/B	C	APH B MAIN MTR	C
		APH B S/B MTR	C