Inst ToolsInst ToolsInst Tools
  • Courses
  • Automation
    • PLC
    • Control System
    • Safety System
    • Communication
    • Fire & Gas System
  • Instrumentation
    • Design
    • Pressure
    • Temperature
    • Flow
    • Level
    • Vibration
    • Analyzer
    • Control Valve
    • Switch
    • Calibration
    • Erection & Commissioning
  • Interview
    • Instrumentation
    • Electrical
    • Electronics
    • Practical
  • Q&A
    • Instrumentation
    • Control System
    • Electrical
    • Electronics
    • Analog Electronics
    • Digital Electronics
    • Power Electronics
    • Microprocessor
  • Request
Search
  • Books
  • Software
  • Projects
  • Process
  • Tools
  • Basics
  • Formula
  • Power Plant
  • Root Cause Analysis
  • Electrical Basics
  • Animation
  • Standards
  • 4-20 mA Course
  • Siemens PLC Course
Reading: Boiler Light-Up Sequence – Power Plant Operation
Share
Font ResizerAa
Inst ToolsInst Tools
Font ResizerAa
  • Courses
  • Design
  • PLC
  • Interview
  • Control System
Search
  • Courses
  • Automation
    • PLC
    • Control System
    • Safety System
    • Communication
    • Fire & Gas System
  • Instrumentation
    • Design
    • Pressure
    • Temperature
    • Flow
    • Level
    • Vibration
    • Analyzer
    • Control Valve
    • Switch
    • Calibration
    • Erection & Commissioning
  • Interview
    • Instrumentation
    • Electrical
    • Electronics
    • Practical
  • Q&A
    • Instrumentation
    • Control System
    • Electrical
    • Electronics
    • Analog Electronics
    • Digital Electronics
    • Power Electronics
    • Microprocessor
  • Request
Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Inst Tools > Blog > Power Plant > Boiler Light-Up Sequence – Power Plant Operation

Boiler Light-Up Sequence – Power Plant Operation

Here in this article, we are going to learn about the boiler light-up sequence for the operation of the power plant.

Last updated: November 17, 2022 4:24 pm
Gaurav Lunagariya
Power Plant
1 Comment
Share
5 Min Read
SHARE

Here in this article, we are going to learn about the boiler light-up sequence for the operation of the power plant which we will know deeply understand prior to starting the activity of CFBC Boiler light-up (circulating fluidized bed combustion).

Contents
Preparation for Boiler light-upFurnaceAir HeaterFansOil Handling PlantElectro Static PrecipitatorAsh Handling SystemLine-up for Boiler Filling

Preparation for Boiler light-up

Prior to starting the activity of Boiler light up following activities are assumed to be completed.

  • The electrical supply system is charged.
  • All the permits were canceled.
  • All the auxiliaries were made normal.
  • Trial of all the auxiliaries over.
  • Filling of the boiler.

Following are some important activities in brief and are to be undertaken before lighting up the boiler.

Boiler Light-Up Sequence - Power Plant Operation

Furnace

  • Check the furnace for any foreign material and no foreign material should exist in the
  • furnace.
  • All manholes and inspection windows are to be closed tightly.
  • Shutters of the peepholes should be closed.
  • Overflow is to be maintained from the seal water trough and bottom ash hopper.
  • All furnace water wall soot blowers & LRSB are in the home position.

Air Heater

  • Switch ON the lube oil system of the Air heater.
  • Keep the Air heater soot blower in ready condition and it is to be kept in service continuously till the oil firing is in service.
  • Take a trial of an alternative drive of an Air heater such as an air motor or D.C. drive.
  • Aireheater flue gas path and air path dampers are to be kept open.
  • Both air heaters are to be kept in service.

Fans

  • Electrical interlock, as well as process interlock trials of I.D., F.D. & P.A. fans, be taken prior to starting these important auxiliaries.
  • All the I.D. & F.D. fans be started one by one prior to lighting up the Boiler. Maintain – 12.5 mm drafts in the furnace and also maintain 30% airflow in the furnace.

Oil Handling Plant

  • Take the stock position of LDO & FO/LHSH oil in the oil handling plant and confirm that adequate oil stock is available.
  • Keep LDO available up to the oil station of the Boiler. Keep FO/LSHS recirculation valve open and maintain 120 0C temperature of it.
  • Keep oil heating atomizing air and atomizing steam ready.
  • Check steam tracing lines and keep them in service.

Electro Static Precipitator

  • All inspection doors are closed.
  • Flue gas dampers are open.
  • All fields are in off condition.
  • All feed gates of the hopper are closed.

Ash Handling System

  • A minimum of one clinker grinder for each hopper should be available.
  • H.P. water pumps are in service and H.P. water be available for de-ashing.
  • Slurry water pumps and ash slurry pumps and their service be available.

Line-up for Boiler Filling

The boiler can be filled from bottom ring header or from the economizer inlet side with the help of an emergency lift pump known as ELP. Make the D.M water system ready.

Open drum vents, super heater vents, and R.H. vents. In the normal running conditions of the plant, ELP is connected to the feed storage tank (FST). Close the valve of ELP through which it is connected to FST.

Above all activities, we have seen how the Boiler is prepared for lighting up. If the purge ready signal is available then press the button on the Boiler desk designated for the start of purging of the boiler and press the switch “push to purge”.

After pressing the switch push to purge, the ‘purging’ indication appears on the desk and after 5 minutes of purge, a complete indication appears on the desk, and the Boiler trip circuit resets. Now Boiler can be lighted up.

Maintain 40 mm WCL furnace to wind box differential pressure. Maintain airflow more than

30%, select LDO or warm-up oil for a cold start. Warm up trip valve opens if the following Conditions are met.

  • No Boiler trip command.
  • Elevation AB warm-up nozzle valve closed.
  • Warm-up oil pressure is adequate.

If you liked this article, then please subscribe to our YouTube Channel for Electrical, Electronics, Instrumentation, PLC, and SCADA video tutorials.

You can also follow us on Facebook and Twitter to receive daily updates.

Read Next:

  • Power Plant Blackout
  • Ash Handling System
  • Fuel Circuit in Power Plant
  • What is Barring Gear Logic?
  • What is a Boiler blowdown?
Don't Miss Our Updates
Be the first to get exclusive content straight to your email.
We promise not to spam you. You can unsubscribe at any time.
Invalid email address
You've successfully subscribed !

Continue Reading

Turbine Bypass System
Gas Turbine Control System
Deaerator Pressure and Level Control System in Power Plants
Classification of Steam Turbines
Gas Turbine Temperature Alarms using Siemens TIA Portal
Proportional Valve and Servo Valves
Share This Article
Facebook Whatsapp Whatsapp LinkedIn Copy Link
Share
1 Comment
  • Sayed Ebrahim says:
    November 21, 2022 at 12:53 pm

    Dear Gent’s
    am glad to be part of such industrial family, look forward to receive all technical issues regarding power plants and industries.

    Reply

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Stay Connected

128.3kFollowersLike
69.1kFollowersFollow
210kSubscribersSubscribe
38kFollowersFollow

Categories

Explore More

What are the Interlocks for Steam Turbine?
Process and Mechanical Parameters in Steam Turbine
Gas Turbine Troubleshooting Tips
Importance of Instrumentation Engineering – Objectives
Measurement of Electrical Parameters in Steam Turbine
What is an Air Pre-heater? – Types, Working, Advantages
Furnace Draft Control System
What is a Boiler Draught System? – Purpose, Types, Advantages

Keep Learning

Steam Pressure Control

Steam Pressure Control

Turbine Control System

Turbine Control System

Stroke Checking Procedure for GCV, SRV, IGV, and LFBV

Stroke Checking Procedure for GCV, SRV, IGV, and LFBV

Boiler Feed Water Treatment

Boiler Feed Water Treatment

What is Barring Gear Logic? Why is it Required in the Steam Turbine?

Control of Lube Oil Pressure and Flow

Lubrication Control System – Turbo Alternator

Power Plant Process Interlock for SA Fan I, & II

Boiler Safety and Process Interlocks – Power Plant Tutorials

Conductivity Meter for Medium Concentration

Measurement of Impurities in Water and Steam – Power Plant

Learn More

Failsafe interlock Design

Failsafe Wiring Practices

Convert Linear mA to Square root mA

Convert Linear Percentage to Square root Percentage

DIN Valve Connectors

DIN Valve Connectors – Definition, Types

Digital Control Systems

Compensation Techniques : Control Systems

Field Instruments enclosures

Pressure Transmitter Heated Enclosures

sinking-and-sourcing-digital-output-modules

PLC Digital Signals Wiring Techniques

How Nuclear Radiation is used to Measure Coke Dust Level?

How Nuclear Radiation is used to Measure Coke Dust Level?

SCADA Features

Features of SCADA

Menu

  • About
  • Privacy Policy
  • Copyright

Quick Links

  • Learn PLC
  • Helping Hand
  • Part Time Job

YouTube Subscribe

Follow US
All rights reserved. Reproduction in whole or in part without written permission is prohibited.
Welcome Back!

Sign in to your account

Username or Email Address
Password

Lost your password?