COMMISSIONING OF BOILER AND AUXILIARIES -I ABC OF THERMAL POWER

Till my 117^th dispatches I have discussed about ,land ,civil work , Boiler ,ESP and

critical Piping. I have been requested by number of readers to discuss or share my

experience on super thermal power station commissioning. Therefore from this

dispatch onwards I will discuss different aspect of Boiler commissioning. Turbine

Package and commissioning will come at later stage.

Before I start discuss on commissioning I will describe the number of subsystem

available with boiler as till date I have describe only the macro system of Boiler.

Also I will indicate the schedule of super thermal power station.

Package list of Boiler/ steam generators.

Civil work for equipment /foundation ( Minimum required)

BOILER FOUNDATION

ESP FOUNDATION

BOILER EQUIPMENT AND DUCT FOUNDATION

MILL BAY FOUNDATIONS

FAN FOUNDATIONS

MILL FOUNDATIONS

CHIMNEY FOUNDATION AND CHIMNEY

CHIMNEY SUPER STRUCTURE

BUNKER BAY STRUCTURE

  BUNKER STRUCTURE.

  ASH HANDLING FOUNDATION FURNACE.

  MISC AREA PAVING

  MISC TANK FOUNDATION REQD FOR LIGHT UP.

  ACID CLEANING PUMP FOUNDATION (TEMP)

  PUMP AND ACCESSORIES FOUNDATION FOR WATER SYSTEM.

Some of the Packages terms as Balance of Plants mentioned below required

for commissioning of  Boiler

  

CW TREAT MENT PLANT                                                 turbine

CW CHLORINATION SYSTEM                                          turbine

CONDENSATE POLISHING UNIT                                     turbine

CLARIFIED WATER FILTRATION PLANT                         common

SOFTENING WATER PLANT                                             common

DM WATER TREATMENT PLANT                                     common

EFFLUENT TREATMENT PLANT                                      common

CHEMICAL LAB  EQUIPMENT                                           common

PTP CHLORINATION PLANT                                             common

PTP CHLORINATION PIPING                                             common

COAL HANDLING PLANT                                                   Boiler

FUEL OIL U/L & STORAGE SYSTEM                                 Boiler

BOTTOM ASH HANDLING SYSTEM                                  Boiler

FLY ASH HANDLING SYSTEM                                           Boiler

ASH DISPOSAL SYSTEM                                                    Boiler

MILL REJECT SYSTEM                                                      Boiler

FIRE PROTECTION SYSTEM                                            common

FIRE DETECTION AND ALARM SYSTEM                         Common

COMP0RESSED AIR PLANT                                              Common

 

MAIN PLANT AIR CONDITIONING  SYSTEMS & AUX. PLANT BUILDING  Common

HYDROGEN GENERATION PLANT                                                               common

ELEVATORS (PH)                                                                                            common

STACK ELEVATORS                                                                                        common

EOT CRANE OF TG HALL                                                                               Turbine

HOIST AND OTHER CRANES                                                                         common



At present I will concentrate on Boiler and Common Portion then we can move into other

Sections.

Power cycle equipment comes under Turbine Package but most of the critical Piping comes

under Boiler Packages and rest will come under Turbine packages. Therefore as whole critical

piping and LP piping etc can be made a package.

MS PIPING

HRH PIPING

CRH PIPING

HPBP PIPING

FW PIPING ( HPH TO BOILER)

HP BYPASS SRAY WATER PIPING

BOILER  PRDS SPRAY WATER PIPING

CONDENSATE WATER PIPING

CONDENSATE MAKE UP  PIPING

TURBINE EXHAUST HOOD SPPRAY PIPING

VALVE GLAND SEALING PIPING

FEED WATER PIPING (DEA TO HPH)

SH/RH SPRAY WATER PIPING

TURBINE AUX. PRDS SPPRAY WATER  PIPING

TURBINE EXTRACTION STEAM PIPING

TG AUXILIARY  STEAM PIPING

LP BYPASS STEAM PIPING

TURBINE WET STEAM WASH PIPING

HEATER DRAIN PIPING

TG CYCLE PIPING HOT DRAINS

TG CYCLE NON RECOVERABLE DRAINS

LP DOSING PIPING

AIR EVACUATION PIPING

MISC. POWER CYCLE PIPING, STEAM BLOW OFF/ALKALI FLUSHING/ACID CLEANING/HYDRO TESTING PIPING ALONGWITH ASSOCIATED  ITEMS e.g. VALVE/PUMPS. Boiler Integral Piping and system FUEL PUMPING- FORWARDING FUEL FIRINGSYSTEM MILLING PLANT SYSTEM AIR & FUEL GAS PATH BOILER FEED WATER AND STEAM SYSTEM SAMPLING SYSTEM (SAMPLE) BOILER CBD DRAINS SYSTEM BOILER IBD  DRAINS PIPING BOILER SOOT BLOWER SYSTEM BOILER PRESERVATION SYSTEM BOILER WLS DRAINS/ VENTS PIPING BOILER OILY /WATER DRAIN PIPING BOILER INTEGRAL INSULATION AH FIRE PROT. -WATER PIPING SYSTEM. MILL FIRE PROT. SYSTEM. FANS SYSTEM FANS HYD./ THYRISTER DRIVE FAN/MOTOR- LUB OIL SYSTEM AH - LUB OIL SYSTEM BH INTERCONNECTING STRUCTURE. INTER CONNECTION BETWEEN BLR&TG ETC Boiler Auxiliary Piping BOILER AUX. COOLING WATER PIPING BOILER SERVICE WATER PIPING INCL AH WASHING /FIRE FIGHTING BOILER INST AIR PIPING BOILER SERVICE AIR PIPING SH/RH SPRAY WATER PIPING BOILER FILL PIPING HP DOSING PIPING BOILER AUX STEAM PIPING Beside the above for Boiler Commissioning following subsystem are required. LP PIPING  AUXILIARY COOLING WATER SYSTEM AND PIPING  EQUIPMENT COOLING WATER PIPING. IA/SERVICE AIR PIPING ASSOCIATE ELECTRICAL AND C&I SYTEM. I will discuss further in next dispatch

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