The presentation describes the cold rolling, warm rolling and hot rolling and synchronising of steam turbine. The Temperature Matching Chart for Turbine metal and Steam is also discussed in the presentation
Turbine Stress Control Logic, Calculation & WorkingTahoor Alam Khan
Turbine Stress Control is one of the complex logics of BHEL turbine. This presentation clearly explains the Logic, working, calculations and influence of the same on operation of steam turbine. For further details and understanding, I can be reached on tahoorkhn03@gmail.com.
The discussion on "Handling of Turbines During Emergencies" has been detailed in the ppt. Some case studies are also discussed in the session where the course participants express their difficulties while coming across the emergencies in handling the turbines at their locations.
Turbine Stress Control Logic, Calculation & WorkingTahoor Alam Khan
Turbine Stress Control is one of the complex logics of BHEL turbine. This presentation clearly explains the Logic, working, calculations and influence of the same on operation of steam turbine. For further details and understanding, I can be reached on tahoorkhn03@gmail.com.
The discussion on "Handling of Turbines During Emergencies" has been detailed in the ppt. Some case studies are also discussed in the session where the course participants express their difficulties while coming across the emergencies in handling the turbines at their locations.
The presentation details about the Boiler Operation specifically while lightup of boiler and loading of boiler. the course participants discuss in details about the operations carried in their respective power stations
Boiler purge is the basic process of resetting boiler before lightup. This presentation explains the logic, schematics & working of purge procedure. For enhanced knowledge of this topic, I can be reached at tahoorkhn03@gmail.com.
The presentation discuss about the operations, causes and remedies for the facing emergencies of steam Turbines. Specially for the 210MW LMW units. The emergencies can be created on simulator and studied on the simulator ACCORDINGLY.
This PPT explains the logic and requirement behind Boiler Loss of Flame Protection under MFT. To know more about Boiler Loss of Flame please connect to tahoorkhn03@gmail.com
Boiler Follow Mode: The boiler is divorced from the generation control, which means the steam turbine utilizes stored energy in the boiler to provide immediate load response. The boiler must then change firing rate to bring pressure back to setpoint.
Turbine Follow Mode: Turbine control valves maintain a set pressure while the boiler fires to maintain load. Drawback here is a slower generation response. There are variations with this scheme, in that the turbine control valves can be fully opened at higher loads to minimize the energy penalty associated with the DP loss across them. In that case, it has been called sliding-pressure control, or even cascade control.
Coordinated Control: In general, you provide various logic schemes to move the steam turbine valves for quick load response, as well as fire the boiler for the anticipated energy requirements of the boiler (generally via an energy balance equation).
MS Lines, Turbine Casings and rotors and other steam lines including Steam Stop Valves, MSV, CV, ESV heating, Turbine Rolling, Flange and Stud heating, Turbovisory and speeding the turbine to 3000 RPM.
The presentation details about the Boiler Operation specifically while lightup of boiler and loading of boiler. the course participants discuss in details about the operations carried in their respective power stations
Boiler purge is the basic process of resetting boiler before lightup. This presentation explains the logic, schematics & working of purge procedure. For enhanced knowledge of this topic, I can be reached at tahoorkhn03@gmail.com.
The presentation discuss about the operations, causes and remedies for the facing emergencies of steam Turbines. Specially for the 210MW LMW units. The emergencies can be created on simulator and studied on the simulator ACCORDINGLY.
This PPT explains the logic and requirement behind Boiler Loss of Flame Protection under MFT. To know more about Boiler Loss of Flame please connect to tahoorkhn03@gmail.com
Boiler Follow Mode: The boiler is divorced from the generation control, which means the steam turbine utilizes stored energy in the boiler to provide immediate load response. The boiler must then change firing rate to bring pressure back to setpoint.
Turbine Follow Mode: Turbine control valves maintain a set pressure while the boiler fires to maintain load. Drawback here is a slower generation response. There are variations with this scheme, in that the turbine control valves can be fully opened at higher loads to minimize the energy penalty associated with the DP loss across them. In that case, it has been called sliding-pressure control, or even cascade control.
Coordinated Control: In general, you provide various logic schemes to move the steam turbine valves for quick load response, as well as fire the boiler for the anticipated energy requirements of the boiler (generally via an energy balance equation).
MS Lines, Turbine Casings and rotors and other steam lines including Steam Stop Valves, MSV, CV, ESV heating, Turbine Rolling, Flange and Stud heating, Turbovisory and speeding the turbine to 3000 RPM.
Power Plant Simulator, Unloading and shutting the TurbogeneratorManohar Tatwawadi
The Presentation describes the steps for gradual unloading of the machine/turbogenerator for a planned shutdown. The steps are described in the presentation.
The presentation is for the simulator for the operation of Thermal Power Plant from starting. It describes the Electrical Charging and Water Cycle Establishment. The simultaneous operations on Turbine sides are also described for the First Part.
The operations carried out to Light up the Boiler, from Air Cycle Establishment, Oil Handling Plant, Scanner air fans and Igniter Air Fans, Boiler Purging.
The presentation is based on the discussions of starting operations of a coal based thermal power plant. This presentation is based on the in-house training to the operation engineers of the thermal power plant. It describes the activity chart for the starting of boiler, Turbine and synchronising of Generator, picking up the load etc.
This is a presentation series part 3 on Frequently Asked Questions on Steam Turbines in large steam power plants. All questions are answered properly and any doubt may be mailed to the writer.
Green building concepts and good building practicesManohar Tatwawadi
The power sector must adopt the green building concepts and go for good building practices. In fact all industries need to go for the same. The same practices can also be adopted in all commercial as well as residential buildings.
Auxiliary Consumption and Saving due to Increase in Boiler EfficiencyManohar Tatwawadi
Discussions on Auxiliary consumption in a 4 X 210 MW TPS, the common systems and individual unitwise Auxiliary consumption has been briefed in the presentation. Also savings in various aspects due to increase in Boiler Efficiency are also discussed in the presentation.
COMPRESSED AIR SYSTEM . ENERGY CONSERVATION OPPORTUNITIESManohar Tatwawadi
The presentation gives an idea as to how the compressed air system is designed and the performance of the compressed air system. The losses, conservation of energy, the cost of leakages etc are discussed in the presentation
Questions and answers on turbines used in Power Plants. The discussion is definitely going to reduce your doubts and give you all answers on your questions. This is part 1 and the series will be continued till your doubts are cleared. you can mail me the questions and i will try to give you all answers as early as possible.
The presentation gives a basic idea of cooling towers in big industries including the Power Plants. The performance of cooling towers and the commonenly used terms with reference to the cooling towers are also discussed at length. Care to be taken while in freezing temperatures in the European countries is also discussed.
The presentation is based on the discussions about the safety in Power Plants and substations. The presentation is a part of the seminar on Electrical safety and reliability. The reporting of accidents was also discussed at length in the seminar
Cost accounting, cost control and cost reduction in TPSManohar Tatwawadi
The subject matter discuss in details about the cost accounting being practiced in a thermal power station for calculating the actual cost of generation of electricity. The cost centres and the cost affecting factors alongwith steps to reduce the cost of generation are described in the presentation. The PPMS system adopted can be further be well designed by any power plant engineer.
Environmental and pollution control in Thermal Power StationsManohar Tatwawadi
The presentation gives the basic idea as to the environment, pollutions and laws, the governing bodies and the limits of the emmissions. Also specifically about the solid waste, liquid waste and the gas emmissions from the Thermal Power Plants.
Energy Audit & Energy Conservation Opportunities in Electrical Equipments ...Manohar Tatwawadi
The discussion is for the Energy Conservation drive in the thermal power plants in the Auxilliary Consumption of the Electrical Auxilliaries in the Plant and thereby identify the steps to be taken for the reduction in Auxilliary Consumption
The presentation details the process of combustion in a 500 MW Coal based Thermal Power Plant where the main fuel is Pulverised coal. It details about the combustion of coal partical in the furnace and also the combustion equations related to the process, the excess air that is supplied.
The presentation gives an idea about the primary requirements for the establishment of a coal based THERMAL POWER STATION. The estimates are quite fair.
Effect of Coal Quality and Performance of Coal pulverisers / MillsManohar Tatwawadi
The presentation discusses about the change in performance parameters of a pulveriser due to change in coal quality and the measurement of performance and troubleshooting of coal firing system as a whole.
The Presentation describes the basics about the Efficiency and performance of a steam based power plant. It also describes how the heat rate of the power plant is important from the point of view of fuel savings.
THE PRESENTATION SPEAKS ABOUT THE BASIC IDEAS ABOUT EFFICIENCIES OF BOILER AND TURBINE IN A COAL BASED THERMAL POWER PLANT WITH THE DESIGN EFFICIENCIES AND HEAT RATE. IT ALSO THROWS LIGHT ON THE VARIOUS IMPROVEMENTS IN HEAT RATE AND EFFICIENCIES.THAT CAN BE ACHIEVED.
Quality defects in TMT Bars, Possible causes and Potential Solutions.PrashantGoswami42
Maintaining high-quality standards in the production of TMT bars is crucial for ensuring structural integrity in construction. Addressing common defects through careful monitoring, standardized processes, and advanced technology can significantly improve the quality of TMT bars. Continuous training and adherence to quality control measures will also play a pivotal role in minimizing these defects.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Event Management System Vb Net Project Report.pdfKamal Acharya
In present era, the scopes of information technology growing with a very fast .We do not see any are untouched from this industry. The scope of information technology has become wider includes: Business and industry. Household Business, Communication, Education, Entertainment, Science, Medicine, Engineering, Distance Learning, Weather Forecasting. Carrier Searching and so on.
My project named “Event Management System” is software that store and maintained all events coordinated in college. It also helpful to print related reports. My project will help to record the events coordinated by faculties with their Name, Event subject, date & details in an efficient & effective ways.
In my system we have to make a system by which a user can record all events coordinated by a particular faculty. In our proposed system some more featured are added which differs it from the existing system such as security.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Democratizing Fuzzing at Scale by Abhishek Aryaabh.arya
Presented at NUS: Fuzzing and Software Security Summer School 2024
This keynote talks about the democratization of fuzzing at scale, highlighting the collaboration between open source communities, academia, and industry to advance the field of fuzzing. It delves into the history of fuzzing, the development of scalable fuzzing platforms, and the empowerment of community-driven research. The talk will further discuss recent advancements leveraging AI/ML and offer insights into the future evolution of the fuzzing landscape.
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
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CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Pile Foundation by Venkatesh Taduvai (Sub Geotechnical Engineering II)-conver...
Thermal Power Plant Simulator, Cold, warm and Hot rolling of Steam Turbine
1. THERMAL POWER PLANT
OPERATIONS
Simulator Part 8- Day 5
MANOHAR TATWAWADI
Director, tops
A2-806, PALLADION, BALEWADI, PUNE 411045
Mob: 9372167165, Email:-mtatwawadi@gmail.com
01-Nov-19 total output power solutions 1
2. COVERAGE
• Checking the Drip Diversion
• Cold, Warm and Hot start of the Unit
• Temperature matching with respect
to Turbine for raising of steam
temperature
• Checklist and operations for Hot
Start.
3. HP-LP HEATERS DRIP DIVERSION
Observe the Drip Diversion on MIMICS “LP DRAIN & HP DRAIN
SYSTEM”
Withdraw any Mill and observe the Drip Diversion with load
reduction
For Loads < 165 MW
HD30, HD21 – Open and HD29, HD31 – Close
(HPH6 to Deairator and HPH5 to LPH4)
Extraction Position
ES6 Open
For Loads > 165 MW
HD30, HD21 – Close and HD29, HD31 – Open
(HPH6 to HPH5 to Deairator)
Extraction Position
ES7 Open
For Loads < 100 MW
HD30, HD21 – Open and HD29, HD31 - Close
Extraction Position
ES6 Open/PRDS
4. COLD START UP OF 210 MW UNIT
• All lines and metal temperatures of boiler and turbine are
at atmospheric temperatures.
• All unit auxiliaries checked and tested for proper running.
• All commissioning trials are over.
• All work permits are cleared with men and material.
• All safety measures are implemented.
• The increase in boiler/steam/turbine temperatures are as
per the startup chart given by the manufacturer.
• Clean air flow measurement for all coal mills has been
carried out and as per the manufacturer.
• Procedure for cold startup already discussed in Parts 1 to 7
6. Warm & Hot Rolling of Turbine
• Decide the type of Start depending on the HPT Casing Metal
Temp.
• Above 3500C Hot Rolling
• Between 150 to 3500C Warm Rolling
• Below 1500C Cold Rolling
• Cold Rolling has been already done in parts 1 to 7
• Procedure for Warm rolling is the same as Cold rolling.
• Rolling is done through HP Cylinder as is done in Cold Rolling
• In warm rolling steam temperature required is more in
comparison to cold rolling and hence more No of Oil Guns will
have to be taken in service as per the requirement.
• The Main Steam temp required will be calculated from the
matching Chart Provided.
7. TEMPERATURE MATCHING CHART
Case:- If the HPT Metal
Temp is 380 Deg C shown
as dotted line on X Axis
then
1. The exact matching
Main Steam temp
would be 4700C and
Pressure would be
70Kg/sqcm.
2. The +ve mismatch
temp would be 5150C
at 70 Kg/sqcm
3. The -ve mismatch
Temp would be
minimum 4250C at a
pressure of 70
Kg/sqcm.
8. HOT ROLLING OF TURBINE
• If the machine trips on full load and the fault is located
and cleared immediately, the machine can be rolled
again.
• The Main Steam Temperatures can be increased by using
HPLP Bypass and HOT ROLLING can be done.
• For this type of start up HP Casing Metal Temperature
should be more than 350 Deg C.
• If the fault is located and cleared after some period and
still if the HPT Casing Metal Temperature is more than
350 Deg C, then also it’s a condition of HOT ROLLING.
• Generally in a short period after machine trips (maybe a
period of 12 to 16 Hrs) HOT ROLLING condition prevails.
10. CHECKLIST & OPERATION
• Note down TA Set Tripping Time/Date/Load at the time of
Tripping
• Confirm Generator all 3 Phases currents have come to
ZERO.
• Check the tripping of field breaker, trip it if not tripped.
• Start SOP Immediately and check observe Lub. oil and relay
oil pressure.
• Confirm ESV / IV Closed and machine speed starts reducing.
• Confirm MS1, MS2 closed on Interlock.
• Confirm LP / HP Heaters Extraction Valves closed and
Deairator Heating Change over to PRDS
• Confirm Tripping of Boiler with all fuel tripped (All Oil
Elevations, all coal Mills and coal feeders tripped)
11. CHECKLIST & OPERATION…….
• Slowly reduce the total air flow to minimum i. e. 300 TPH.
• Control the drum level by operating Feed water Valve / BFP
scoop positions.
• Check the opening of condenser spray MC39, MC57 on
interlock
• Confirm all SH Spray Valves closed on AUTO.
• Bring Burner Tilt Position to Horizontal. 50%
• Bypass T.T.B.T. switch (Turbine Trip to Boiler Trip on manual)
• Check the Boiler Drum Level NORMAL
• Check PURGE READY indication and give command for Purging
• After Purge Complete and the boiler is reset, open the trip
valves for Ignitor, Warm up Oil and Heavy Oil.
12. CHECKLIST & OPERATION…….
• Select Heavy Oil for AB Elevation
• Take Oil Support in AB, CD and EF Elevations one by
one
• Check and maintain the drum level.
• Check that the IGV of PA fans on Manual and close
them.
• Start PA Fans one by one and put the IG vanes on AUTO
to maintain Header Pressure 800mm.
• Check Vacuum, Condenser Level.
Break Vacuum if
• The machine has tripped on “Low Lub Oil Pressure”
• Axial Shift very High
• Any other abnormality such as sound from Turbine
13. CHECKLIST & OPERATION…….
• Open Gland Steam Valves of HPT/IPT if they are closed and
watch vacuum.
• Watch Differential Pressure between Hydrogen and Seal Oil
during coasting down of the machine.
• Maintain Lub Oil Temp not less than 40 Deg C.
• Note down the Axial Shift and Expansions of HPT IPT and LPT.
• When the speed of turbine comes to zero put Machine on
Barring Gear.
• Note down the HPT and IPT Casing Metal temperatures.
• Open HP LP Bypass Drain, Open HP/LP Heaters Drains.
• Ensure CR5, CR6 valves are open before charging of HP/LP
Bypass.
14. CHECKLIST & OPERATION…….
• Open LP Bypass min 4%, Open HP Bypass also 8%.
• Watch condenser level and maintain.
• Watch Main Steam Pressure and maintain it by
operating HP Bypass Valves.
• Maintain the Pressure in Reheater to 6-7kg/sqcm.
• Open HPT and IPT casing drains by 5%.
• Open Main steam Valves MS1 and MS2.
• Start opening the Speeder gear. At 6.820 mm IV and
ESV will open.
• Open the speeder gear further to 7.120, Control valves
of IPT will start opening.
15. CHECKLIST & OPERATION…….
• Observe the speed of the turbine increasing, watch
expansions, if the expansions are going towards –ve side
give rotor heating.
• When the turbine speed reaches more than 2800 RPM stop
SOP.
• Raise the speed to 3000RPM without stopping at the
critical speeds by operating the HPLP Bypass.
• Make the field flashing supply ON.
• Make the field breaker ON.
• Changeover AVR from AUTO to MANUAL. Raise the
Generator Voltage to 15.75 KV.
• Make the synchroscope ON.
16. CHECKLIST & OPERATION…….
• Synchronise the generator with the grid by closing the
Generator breaker from the control desk when
synchroscope is moving from 11 to 12 position slowly.
• Check the Voltage error for ZERO and put AVR on AUTO.
• As soon as the unit is synchronized, open the CVSM further
and close LP Bypass fully, HP Bypass may be open.
• Observe the increase in Generator load as all the steam is
now flowing through the IP Turbine.
• Check the HPT first stage pressure and check that HPT
Control valves are open.
• Ensuring that the HPT Control Valves are OPEN, close the
HP Bypass valves.
17. CHECKLIST & OPERATION…….
• Stop Rotor heating if it is in service.
• Close all drains
• Maintain Boiler Drum Level from control desk 4
• Similarly maintain the M.S. Pressure by increasing the fuel
input to the boiler. (Increase HO pressure and/or take coal
mill in service.)
• Normalise TT/BT switch. (Turbine Trip to Boiler Trip switch)
• Changeover Station Supply to UAT Supply when load is
more than 50 MW.
• Take LP/HP Heaters in service and increase the load to 210
MW as per the Ramp rate as per Chart