scholarly journals SPURIOUS ACTIVATION ASSESSMENT OF THERMAL POWER PLANT’S SAFETY-INSTRUMENTED SYSTEMS

2017 ◽  
Vol 3 ◽  
pp. 310
Author(s):  
Sergei Trashchenkov ◽  
Victor Astapov
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Thermal Power ◽  
Reduction Factor ◽  
Generation Process ◽  
Flexible Approach ◽  
Safe State ◽  
Risk Criterion ◽  
Generation Company ◽  
It Productivity

Safety-instrumented systems (also called technological protections) play the significant role in prevention and mitigating of major accidents that can occur on thermal power plant. Activations of safety-instrumented system turn the power unit into safe state by shutting it down or reducing it productivity. The power generation process operates continuously. Any unplanned outage of generation equipment leads to undersupply of energy and big commercial losses to generation company. In Russia the values of allowed spurious trip rate for safety-instrumented systems are set by regulatory agency. These values are strict to all technological protections and do not take into account the differences in amounts of losses. This paper presents more flexible approach based on the Farmer’s risk criterion. Also risk reduction factor for spurious activation is proposed.

Risk Analysis and Safety Evaluation on Combustion System of Gas-Steam Combined Cycle Power Plant

2014 ◽  
Vol 533 ◽  
pp. 354-359 ◽  
Author(s):  
Zhong Qiang Sun
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Risk Analysis ◽  
Combined Cycle ◽  
Generation Process ◽  
Combustion System ◽  
Toxicity Index ◽  
Combined Cycle Power Plant ◽  
Product Gas ◽  
Gas Poisoning

Under the general policy of the national energy-saving emission reduction and sustainable development, the domestic iron and steel enterprises surge in the by-product gas power generation project. There exist many dangerous and harmful factors in by-product steel gas power generation process and which easily caused casualties and the pollution of the environment. The study on risk analysis and evaluation are still relatively dearth about the by-product gas generating process of domestic steel enterprises. The boiler system on a Combined Cycle Power Plant was analyzed and evaluation by ICI/MOND fire and explosion toxicity index method and the method of fault tree analysis, which combined with the actual situation of steel plant Combined Cycle Power Plant. The results show that the combustion system is more dangerous, and the hazard index levels are reduced to lower level after safety compensatory measures except the unit toxicity index higher. The shielding device or gas alarm failure was the main cause of gas poisoning. According to the analysis some feasible measures was put forward. The study has positive guiding significance for risk management and safety administration decision of the Combined Cycle Power Plant.

scholarly journals Study and evaluation the air pollution around the thermal power plant of Zebadiah city, Wassit province, Iraq

2018 ◽  
Vol 7 (4) ◽  
pp. 2494
Author(s):  
Abdulkhaleq Kamal Mahmood ◽  
Ali Abdulkhaleq Kamal
Keyword(s):  
Power Plant ◽  
Sulfur Dioxide ◽  
Nitrogen Oxide ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Generation Process ◽  
Confined Space ◽  
Power Station ◽  
Gas Concentration ◽  
Prevailing Wind Direction

This study focused on gaseous pollution caused by exhaust gas from AL-Zubaydiah thermal power plant. Study gases included sulfur dioxide (SO2), nitrogen oxide (NO), carbon oxide (CO) and hydrocarbon (HC). The concentration of gas measurement is conducted during six months from January until June 2017. Nova 600 series portable devise and G450 confined space gas detector was used for measuring gas concentration, which emitted from the chimney of the thermal power station with an interval of 100m and into the path of smoke for a distance of 1400 m. The prevailing wind direction and temperature were taken into consideration during the study and their impact on the gas distribution. Four readings have been taken in each station during each month for all gases under study. The results showed that less gas concentrations were near the power station and then getting more gas concentration away from the station and higher concentrations are obtained at a distance of 900 m from the power station at ground level. Results indicated that sulfur dioxide concentrations recorded were higher than allowed in the Iraqi and American standards in most locations around the station. The highest concentration recorded at 900 m from the power station with value 597.3968 μg/m3, which is higher than the limitation of Iraqi and international specifications (150 μg/m3). This high concentration of SO2 is due to the crude oil from the Ahdab field with high rates of Sulphur that used as fuel in the generation process. These high concentrations of sulfur dioxide cause problems on the growth of plants and human health and viability of the soil in the coming years. Nitrogen oxide gas concentrations also were high and outside the upper limits allowed and were worth 131.38 μg/m3. The rest of the gas concentration (CO and HC) were acceptable and within the Iraqi standard. To preserve the environment in the region and within the limits of the allowed values globally requires a search for another source of fuel with a low percentage of sulfur and using modern technology for burning to reduce emissions of nitrogen oxides.  

Study on Thermal Power Plant Safety Evaluation Based on BP Neural Network

2014 ◽  
Vol 687-691 ◽  
pp. 2083-2086
Author(s):  
Chao Wang ◽  
Ying Jie Lian
Keyword(s):  
Neural Network ◽  
Power Generation ◽  
Power Plant ◽  
Bp Neural Network ◽  
Thermal Power ◽  
Safety Evaluation ◽  
Electric Power Industry ◽  
Plant Production ◽  
Plant Safety ◽  
Safety Production

Electric power industry is a basic industry of national economy, the power plant production safety related to people's life safety and property of the state, the power of reform and social stability, safety evaluation of power generation enterprises is an important guarantee of safety production in power generation enterprises.The paper establishes the BP neural network model, utilize BP neural network optimization ability and good fitting ability, combining the index system build, carries on the appraisal to the power generation enterprise security.Now the instance verification results show that BP neural network is applied in safety evaluation of power generation enterprises, not only can accurately evaluate the safety situation of power generation enterprises, and the speed of convergence process is quickly.

Application of the Contrasting Method in Lecturing the Steam Power Cycle

2014 ◽  
Vol 889-890 ◽  
pp. 1721-1724
Author(s):  
Pei Rong Wang ◽  
Hong Yuan Ma ◽  
Ya Rong Wang
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Thermal Power Plant ◽  
Teaching Method ◽  
Thermal Power ◽  
Good Effect ◽  
Steam Power ◽  
Power Cycle ◽  
Important Position ◽  
Contrasting Method

Steam power cycle occupies very important position in thermal power plant. Steam power cycle for thermal power professional and engaged in the related personnel of thermal power generation is very important. In this paper expatiation is made on using the contrasting method to teach the content of the steam power cycle, which broke the traditional step-by-step sequence teaching method. Using this method, which has been proved by practice, has attained comparatively good effect.

scholarly journals Evaluation of a 3.5-MW Floating Photovoltaic Power Generation System on a Thermal Power Plant Ash Pond

2020 ◽  
Vol 12 (6) ◽  
pp. 2298 ◽  
Author(s):  
Jung-Youl Choi ◽  
Seong-Tae Hwang ◽  
Sun-Hee Kim
Keyword(s):  
Power Generation ◽  
Power Plant ◽  
Thermal Power Plant ◽  
Thermal Power ◽  
Energy Performance ◽  
Electricity Production ◽  
Generation System ◽  
Design Code ◽  
Power Generation System ◽  
Ash Pond

This study evaluated the design and performance of an improved 3.5 MW floating photovoltaic (PV) power generation system consisting of fiber-reinforced polymer (FRP) members and its installation in the ash pond of a thermal power plant. The FRP design code of the American Society of Civil Engineers was used to design the structure. The safety of the structure was then confirmed using a finite element analysis indicating that the induced stresses were less than the allowable stresses dictated by the Korean Highway Bridge Design Code. An examination of the energy performance of the floating PV energy generation system after installation determined that the measured electricity production was as high as approximately 94% of the installed 3.5-MW capacity. The energy production of the floating PV structure with the improved design and module angles was found to increase by 7.65 times.

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