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.
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.
Thermal Power Plant Simulator, Cold, warm and Hot rolling of Steam TurbineManohar Tatwawadi
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
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
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.
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.
Thermal Power Plant Simulator, Cold, warm and Hot rolling of Steam TurbineManohar Tatwawadi
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
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
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.
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.
HYDRAULIC POWER PACK 230LPM/210 BAR: Hydraulic power pack shall cater for supply of Hydraulic oil to 6 (Six) No's of Servo hydraulic actuators (500kN range) working simultaneously in synchronization mode under load (up to 500 kN) at 210 bar pressure and at 200 - 230 l/min.it is a testing facility of servo hydraulic actuator in which we supply motor 110 kw & axial piston for creating 210 bar pressure and 200-230 LPM flow. A motor 11kw for a vane pump is used for cooling of oil up to 50 deg C. with Reservoir 1500 ltrs, as Per Technical Specification.
A flow meter is used for measure the flow 200- 230 LPM with high pressure up to 210 bars. Accumulator is used to reserve the pressurized fluid i.e. hydraulic energy which is used due pressure drop in the system. Pressure relief cum unloading valve is used to loading & unloading of system. Due to loading of pressure and flow system will go with high temperature so Shell & tube type heat exchanger is used to maintain the temperature of hydraulic fluid with a vane pump with 390 LPM flow. For maintaining the NAS class different type of filters are used in main line pressure, return pressure & offline cooling system. This machine has two control systems one is main control panel & another is remote control panel.
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.
CSR and sustainable development innovative possibilitiesRAVI PAL SINGH
We as NTPC technically, sociologically, and environmentally are doing a lot towards attaining sustainability but it is never sufficient and must strive to increase our efforts as well as explore new innovative possibilities.
• Use scenario planning to identify potential risks to your business—and new opportunities to exploit.
• Set ambitious targets and lead by example.
• Tap into employee and locals engagement-both internally, and across business partners.
• Explore other benefits that can be derived from action on sustainability.
• We can show our responsibility not only through our words but our actions.
• CSR is not only a charity but a timid seed which bears the fruit of sustainability.
• This tree bears fruit of sustainability only after a finite period of time.
The demand of power is increasing exponentially results in installation of new stations whereas the sources of water are depreciating acutely. In future there may be a situation in which water sources may not cope up with this requirement.
Also the serious concerns of the regulatory authorities regarding usage of natural resources, definitely the norms will be further be tightened, which will curtail the freedom of usage of water in power plant.
In present scenario land acquisition is one of the toughest hurdles in plant installations which can be averted by locating stations in water scarce regions, by employing air cooled system which eliminates dependencies on water for CW.
Although dry cooling systems are costly technologies on techno-economic considerations, but foreseeing the future it is the need of hour to employ dry cooling system which offers possible solution for power plant installation eliminating the above mentioned challenges.
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.
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Automobile Management System Project Report.pdfKamal Acharya
The proposed project is developed to manage the automobile in the automobile dealer company. The main module in this project is login, automobile management, customer management, sales, complaints and reports. The first module is the login. The automobile showroom owner should login to the project for usage. The username and password are verified and if it is correct, next form opens. If the username and password are not correct, it shows the error message.
When a customer search for a automobile, if the automobile is available, they will be taken to a page that shows the details of the automobile including automobile name, automobile ID, quantity, price etc. “Automobile Management System” is useful for maintaining automobiles, customers effectively and hence helps for establishing good relation between customer and automobile organization. It contains various customized modules for effectively maintaining automobiles and stock information accurately and safely.
When the automobile is sold to the customer, stock will be reduced automatically. When a new purchase is made, stock will be increased automatically. While selecting automobiles for sale, the proposed software will automatically check for total number of available stock of that particular item, if the total stock of that particular item is less than 5, software will notify the user to purchase the particular item.
Also when the user tries to sale items which are not in stock, the system will prompt the user that the stock is not enough. Customers of this system can search for a automobile; can purchase a automobile easily by selecting fast. On the other hand the stock of automobiles can be maintained perfectly by the automobile shop manager overcoming the drawbacks of existing system.
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.
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Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
2. LAYOUT
1. Introduction
2. Components
3. Operation
DISCLAIMER
Only HP LP Bypass system has been studied here. Due to time constraint and for sake of simplification, all other
operation activities to be performed are not discussed here.
4. WHY BY PASS SYSTEM IS REQUIRED ?
BOILER TURBINESTEAM
HOT HOT
NORMAL RUNNING
5. BOILER TURBINECOLD STEAM
WHY BY PASS SYSTEM IS REQUIRED ?
COLD HOT
LIGHT UP AFTER SHUT DOWN
BYPASS SYSTEM REQUIRED FOR MATCHING LIVE STEAM AND TURBINE METAL
TEMPERATURE. ITS MAIN JOB COMPRISES TO ROUTE STEAM FROM THE MAIN STEAM LINE
TO THE COLD REHEAT LINE OR FROM THE HOT REHEAT LINE TO THE CONDENSER.
6. HP LP BYPASS SYSTEM
REHEATER
MAIN STEAM
CRH HRH
HP
BYPASS
CONDENSER
LP
BYPASS
HP
TURBINE
IP
TURBINE
TURBINELP
7. WHEN BYPASS SYSTEM IS REQUIRED ?
1. DURING START UP OF BOILER (COLD, WARM, HOT START UP): The Bypass system valves
keeps the pressure and temperature of steam supplied to turbine within permissible limits.
2. WHEN FLOW IS NECESSARY THROUGH REHEATER: During startups flow through Reheater
coils is necessary to prevent damage due to high temperatures(>4500) in Goose neck area.
3. DURING START UP OF TURBINE: The rolling of turbine when the turbine control valves are
only partially opened, bypass system valves facilitate circulation of remaining steam from
boiler directly to condenser.
4. DURING NORMAL OPERATION: The Bypass system valve ensures that the steam pressure
inside the boiler as well as inside the main stream line does not exceed the maximum
permissible value. It dissipates the excess steam in case of abrupt changes in output, which
might be due to sudden tripping of turbine or load shedding, and also absorbs pressure
peaks.
8. FUNCTIONS OF BYPASS SYSTEM
FUNCTIONS OF HP BY PASS SYSTEM
1. To establish flow at the outlet of super heater for raising boiler parameters during
startup.
2. To maintain or control steam pressure at preset valve in main steam line during startup.
3. To warm up steam lines.
4. To control steam temperature down steam of HP By Pass at the preset value.
5. To dump steam from boiler into condenser in case the generator circuit breaker opens.
FUNCTIONS OF LP BY PASS SYSTEM
1. Control of steam after Reheater.
2. Establish flow of steam from reheat line to condenser by its opening, proportional to the
opening of by pass valve.
3. Release of stem entrapped in HP and Reheater circuit in case generator circuit breaker
opens.
11. HP BYPASS SYSTEM AT NTPC TANDA STAGE 1
HP BYPASS MOTORISED
ISOLATING VALVE
HP BYPASS PRESSURE
CONTROL VALVE
HP BYPASS TEMEPRATURE
CONTROL SPRAY VALVES
LOCATED NEAR BFP#A AT 06 METER ELEVATION
12. HP BYPASS PRESSURE CONTROL VALVE
Model : ARS 80
Pressure : 139 ksc
Temperature : 540 degrees
Pressure Drop : 128 ksc
Steady Flow : 130 TPH
13. HP BYPASS TEMPERATURE CONTROL VALVE
Model : E 22 S BD
Pressure : 180 ksc
Temperature : 170 degrees
Pressure Drop : 57 ksc
Steady Flow : 19 TPH
Model : E 22S
Pressure : 123 ksc
Temperature : 170 degrees
Pressure Drop : 26.5 ksc
Steady Flow : 19 TPH
14. LP BYPASS SYSTEM AT NTPC TANDA STAGE 1
MOTORISED ISOLATING VALVE
PRESSURE CONTROL
VALVE
TEMPERATURE CONTROL
SPRAY VALVE
MOTORISED SPRAY
ISOLATING VALVE
15. LP BYPASS SYSTEM AT NTPC TANDA STAGE 1
LP BYPASS MOTORISED
ISOLATING VALVE
LP BYPASS PRESSURE
CONTROL VALVE
LP BYPASS TEMEPRATURE
CONTROL SPRAY VALVES
LOCATED NEAR HP
TURBINE AT 09 METER
ELEVATION
LOCATED NEAR MOT
COOLERS AT 05 METER
ELEVATION
LP BYPASS MOTORISED
SPRAY ISOLATING VALVE
LOCATED NEAR CW#A2
O/L PIPE AT 05 METER
ELEVATION
16. LP BYPASS PRESSURE CONTROL VALVE
Model : NR 64 300
Pressure : 13.75 ksc
Temperature : 540 degrees
Pressure Drop : 4.35 ksc
Steady Flow : 150 TPH
17. LP BYPASS TEMPERATURE CONTROL VALVE
Model : NR 100 80
Pressure : 24 ksc
Temperature : 45 degrees
Pressure Drop : 1 ksc
Steady Flow : 44 TPH
19. HP LP BYPASS OIL SUPPLY UNIT
LOCATED BETWEEN MOT COOLER AND CENTRIFUGE MACHINE AT 00 METER ELEVATION
20. HP-LP BYPASS OIL SUPPLY UNIT PANEL
IN UCB
OPERATE THIS TO
SWITCH ON HP LP
BYPASS OIL SUPPLY
UNIT MOTOR
MOTOR IS ON
OIL PRESSURE
ADEQUATE FOR
OPERATION OF
VALVES
23. PREREQUISITES
1. Boiler is lit up.
2. Drum pressure is at least ~20 ksc and in rising trend.
• During cold startup use Oil firing to steadily raise drum pressure upto 20 ksc and when it is
in rising trend HP LP Bypass can be operated.
• During warm and hot startup use oil firing and if drum pressure is equal to or more than 20
ksc and in rising trend HP LP bypass can be operated.
3. Boiler Stop valves MSM 1A and MSM 1B are open and MS line is charged.
4. Turbine is on barring.
5. CW lines of condenser is charged.
6. HP sealing is charged from PRDS and maintain pressure at 500 mmwcl and temperature 260°C.
7. LP sealing is charged from PRDS and maintain pressure at 1000 mmwcl and temperature 160°C.
8. Vacuum puling is complete and condenser vacuum is steady at less than -0.850 ksc.
9. LP Exhaust hood spray is charged.
24. HP-LP BYASS CONSOLE OPERATION
1. Start HP/LP bypass oil supply unit pump.
2. Wait for Adequate Oil pressure indicator to be ON. Thereafter proceed to next step.
3. Open HP Bypass motorized isolating valve HPBM-17.
4. Open LP Bypass motorized isolating valve LPB-16.
5. Open manual isolating valves of LP Bypass temperature control spray valve.
6. Open LP Bypass temperature control motorized isolating valve LPB-12.
7. Now operate HP Bypass, LP Bypass pressure control valves and LP bypass temperature
control valve from HP LP Console in OPSTN.
8. LP bypass temperature control valve is fully opened.
25. HP LP BYPASS CONSOLE OPERATION
RAISE COMMAND WILL REDUCE MS PRESSURE AND INCREASE RH PRESSURE
26. HP LP BYPASS CONSOLE OPERATION
RAISE COMMAND WILL REDUCE RH PRESSURE AND INCREASE LPBE TEMPERATURE
27. HP LP BYPASS CONSOLE OPERATION
RAISE COMMAND WILL REDUCE LP BE TEMPERATURE
28. HP LP BYPASS CONSOLE OPERATION
OPERATE BP AND L-BP TO MAINTAIN MS AND RH PRESSURE AND TEMPERARUTERS
29. HP LP BYPASS CONSOLE OPERATION
MP TOP
TEMPERATURE
MS
TEMPERATURE
HRH
TEMPERATURE
MS PRESSURE HRH PRESSURE
<2000C 300-3200C 260-2800C 35KSC 5-10KSC
200-2700C 320-3600C 280-3400C 35KSC 5-10KSC
270-3500C 360-4300C 340-4100C 35KSC 5-10KSC
350-4000C 430-4700C 410-4500C 50KSC 5-10KSC
400-4300C 470-4900C 450-4700C 80KSC 5-10KSC
430-4500C 490-5000C 470-4900C 90KSC 5-10KSC
1. Operate HP Bypass, LP Bypass pressure control valves and LP bypass temperature
control valve from HP LP Console in OPSTN to gradually reach MS HRH Pressure upto
mentioned in table below.
2. By maintaining flow in HP LP Bypass gradually reach MS and RH Temperatures as
mentioned in table below.
3. If MS and HRH temperature rise is fast or more then as given in table below, control
temperature by using fuel firing and Burner tilt. This will cause delay in rolling.
4. When all parameters have become stable prepare Turbine for rolling.
32. HP LP BYPASS CONSOLE OPERATION WITH
ROLLING
1. Ensure turbine is in speed control mode in Skoda OPSTN.
2. Reset the turbine.
3. Press Latch button on Skoda OPSTN to open the stop valves.
4. Ensure Turbine speed remain steady 63-64 RPM.
5. Roll the turbine up to 1200 rpm by pressing Auto Button on Skoda OPSTN Speed control
Block. During this control valves will open, hence accordingly increase fuel firing or
operate HP Bypass, LP Bypass pressure control valves to maintain MS and HRH
pressures.
6. Closely monitor turbine bearing vibrations and eccentricities for any abrupt spikes.
Monitor differential expansion of turbine to be within limit as below:
• HP DE : +3.5 MM TO -1.5 MM (control by MS Temperature)
• MP DE : +3.5MM TO -1.5 MM (control by HRH Temperature)
• LP DE : +4 MM TO -2 MM (control by condenser vaccum)
33. HP LP BYPASS CONSOLE OPERATION WITH
ROLLING
7. Keep rolling on 1200 RPM to until HP/MP turbine expansion stabilizes. Required values are for
rolling to 3000 rpm are as below:
8. Roll the turbine up to 2998 by pressing the Auto button once again on Skoda OPSTN Speed
control Block. Once again control valves will open, accordingly increase fuel firing or operate
HP Bypass, LP Bypass pressure control valves to maintain MS and HRH pressures.
9. Closely monitor turbine bearing vibrations and eccentricities for any abrupt spikes.
10. Keep rolling on 2998 RPM to until HP/MP turbine expansion stabilizes. Required values for
synchronization are as below:
11. When all parameters have become stable prepare to synchronize the machine.
TYPE OF STARTUP HPOE MPOE
COLD STARTUP 10 MM 04 MM
HOT/WARM STARTUP 20 MM 10 MM
TYPE OF STARTUP HPOE MPOE
COLD STARTUP 14 MM 07 MM
HOT/WARM STARTUP 20 MM 10 MM
34. HP LP BYPASS CONSOLE OPERATION WITH
SYNCRONIZATION
As soon the machine is synchronized Turbine control valves will be opened rapidly, to
raise load around 15~20 MW. Hence operate the HP LP bypass as below:
1. Just after synchronization immediately close LPBP pressure control valve and there
after LPBP motorized isolating valve.
2. Close LPBP spray control valve, its motorized isolating valve, LP Bypass spray and
exhaust hood spray manual valves in local.
3. Gradually close HPBP control valve keeping MS Pressure, load constant. When the HP
BP control valve is closed fully then close its motorized valve.
4. Switch off HP LP Bypass Oil Supply Unit Panel.
35. MERITS OF HP LP BYPASS SYSTEM
1. It cuts down unit startup time.
2. It allows boiler operation during short turbine trips.
3. It gives smooth warm up of boiler components, including Reheater. A most rapid
boiler run-up may be possible. It saves fuel.
4. It enables the boiler to take up heavy rejection trip to house load operation
advantageously.
5. It allow better matching of boiler and turbine parameters.
6. DM Water loss during startup is minimized during start up and sudden load shedding.
7. Independent operation of boiler is achievable.
8. To prevents frequent flowing of safety valves.