Low Temperature FAC
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The document defines and discusses the phenomenon of low-temperature flow-accelerated corrosion (FAC), which can occur below 200°F. It summarizes operating experience with low-temperature FAC at several nuclear plants. The Electric Power Research Institute (EPRI) found susceptible areas in pressurized water reactors (PWRs) and boiling water reactors (BWRs) and made recommendations for inspections and analyses. The impact on corrosion susceptibility inspection projects is that piping downstream of condensate filters and demineralizers in PWRs, as well as low-oxygen areas in BWRs, should not be excluded from evaluations due to low temperatures.
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Determination of Oxygen in Anhydrous Ammonia
Determination of Oxygen in Anhydrous Ammonia
SCOPE AND FIELD OF APPLICATION
This method is suitable for the determination of trace amounts of oxygen in Liquefied anhydrous ammonia.
The trace oxygen analyzer provides for trace oxygen analysis in decade steps ranging from 0 - 10 to 0 - 10,000 ppm v/v (full scale).
Boiler Operation and Maintenance Experiences
The document discusses efficient operation and maintenance of boilers at NTPC Simhadri. It provides an overview of NTPC's journey and capacity, describes the types of boilers used, and outlines best practices adopted to reduce boiler tube leakages. These include improved startup procedures, monitoring of chemical parameters, thorough inspections and testing, and implementation of new technologies like acoustic leak detectors and process instrumentation systems. The presentation aims to share experiences in achieving zero boiler tube failures through preventative maintenance practices.
TBC Acid Water Field Test Report_Mar23-15 R2[1]
This document summarizes the results of a field work investigation and chemical testing program to address acidic corrosion at the Tangga Barat Central Processing Platform in Malaysia. Key findings include:
- Produced water from 12 of 13 active wells was acidic, with pH below safe limits of 6-8.
- Total iron levels increased significantly throughout the production and processing system, indicating corrosion.
- Chemical testing showed an engineered neutralizing filming additive was able to neutralize the acidic water and provide 25% additional corrosion protection.
- Recommendations included installing injection pumps and points for the additive to provide long-term corrosion mitigation for the platform's produced water systems.
Api6 a trim_material_ratings
Australian Pipeline Valve (APV) complies with API-6A technical specifications for oil and gas valves. The document provides an overview of API-6A standards including:
a) Pressure and temperature ratings for APV valves from 2000psi to 15,000psi and ratings L to Y.
b) Material classes from AA to HH and Product Specification Levels 1 to 4.
c) Charts showing minimum PSL requirements based on factors like pressure, H2S exposure.
d) Descriptions of trim types for applications like sour gas, water, and temperature ranges.
Application in deep vertical groundbeds of linear flexible anodes
This presentation discusses the use of linear flexible anodes in deep vertical groundbeds for cathodic protection. It describes the product specifications and design options for the anodes. A case study is presented where the anodes were installed in a 61m deep vertical well in Italy. Monitoring data showed the groundbed resistance and cell voltage stabilized at low levels, demonstrating the effectiveness of the flexible anodes in deep well applications. The anodes can provide installation cost savings through reduced borehole diameters and shorter active zones.
Aicarr vicenza 2016 emerson
Evolution of Compressors and Commercial Refrigeration Systems in Connection with the Latest Energy and Environmental Regulations
Power Plant Chemistry FEED WATER TREATMENT
This document provides information on feed water treatment and corrosion control in power plants. It discusses the types of impurities found in feed water and how maintaining an alkaline pH and removing dissolved oxygen can minimize corrosion. It also outlines water quality guidelines and parameters for different types of plant systems. The objectives of chemical treatment are to reduce corrosion and prevent scale formation. Various chemical treatments used include volatile alkalis to control pH, hydrazine for oxygen removal, and phosphates for alkalinity and corrosion control.
Integrating RBI with Inspection Programs and IOW - Corrosion Loops_Corrosion ...
Risk-Based Inspection (RBI) has been widely used to optimize inspection activities in the industry starting in the 1990’s.
Application to piping corrosion loops/systems in a manageable way has been more challenging.
RBI for pressure vessels has been generally accepted and easily managed.
Establishing Integrity Operating Windows (IOW’s) using API 584 is an opportunity to manage fixed equipment and piping and integrate inspection activities with RBI
API 6A Wellhead Selection.ppt
This document provides an overview of API 6A, which establishes specifications for wellhead and Christmas tree equipment. It covers the scope of equipment covered, service conditions, material classes, pressure and temperature ratings, quality control requirements, and testing procedures. Equipment manufactured according to API 6A has undergone audits and testing to ensure it can withstand downhole conditions in the oil and gas industry.
Stator water system chemistry
This is the short presentaion on stator water chemistry and is useful to every chemist work in thermal power plant
corrosion monitoring Algeria.pdf
The document discusses corrosion monitoring techniques, providing details on manual monitoring methods like corrosion probes and coupons, semi-automatic online monitoring systems, and factors to consider for corrosion monitoring locations and safety procedures. It also covers corrosion causes and forms, cost impacts, and the importance of corrosion monitoring programs for assessing infrastructure integrity and costs.
FCC Off Gas Treatment
VULCAN VGP Series catalyst can selectively hydrogenate acetylene and other impurities in refinery off gases to allow for recovery of valuable olefins. The catalyst removes acetylene, oxygen, arsine and phosphine at typical operating temperatures of 150-260°C through hydrogenation and chemisorption reactions. The performance of the catalyst gradually declines due to fouling and requires periodic regeneration by heating in air and steam to remove carbon deposits.
Question Answer on Fertilizers Industries.pdf
There are numbers of Fertilizers are used for improve productivity of grain, N; P &K are important fertilizers among them. Commercially Urea is more produced because the Nitrogen percentage is higher than all fertilizers. These three NPK are primary nutrient. There are some question arises about these industries, present paper intended to attempt the answer those questions. These question are very useful in interview point of view and also for new comers joining in Fertilizers Industries.
Oil and gas hardfacing and cargbide coating ppt
- Spraymet Surface Technologies provides thermal spray coatings and cladding services using techniques like HVOF and plasma spraying.
- They have facilities in Bangalore and Pune equipped with robotic sprayers, grinding, blasting and other processing equipment.
- Thermal spray coatings offer benefits over hard chrome plating like lower capital costs, selective application, and no hazardous waste generation. HVOF spraying in particular produces very dense coatings with high bond strength.
- Spraymet evaluates coatings for properties like hardness, porosity, bond strength and corrosion resistance to validate coating performance for applications in industries like automotive, steel, pumps, and oil & gas.
AWMA 17 March 2016 - Sulfuric Acid Measurement - Geosyntec
1) The document describes using FTIR spectroscopy to continuously monitor sulfuric acid concentrations in coal plant flue gas. FTIR allows for real-time, in-situ measurement of multiple flue gas components including sulfuric acid.
2) Field tests at two coal plants successfully measured sulfuric acid concentrations between 3-29 ppmv at various points in the flue gas treatment systems.
3) Continuous sulfuric acid monitoring can provide insights into SCR catalyst performance over time and optimize ammonia injection for emissions control.
Spraymet valve industry ppt
1) SPRAYMET provides thermal spray coatings for valves, pumps, and other industrial components operating in severe service conditions.
2) Their coating services include HVOF, plasma spraying, and PTA to apply carbide, metal, and alloy coatings.
3) They have the capability to coat, grind, and lap ball valves from 1/2" to 14" as well as provide coated components for gate valves, plug valves, control valves, and other industrial parts.
Presentation latest developements
The document summarizes recent developments in sulphuric acid technology presented by Outotec. It describes the OTOVent venturi quench system, which separates hot/dry and cold/wet areas to prevent particle deposits. It also details the HEROSTM energy recovery process, which generates steam while recovering waste heat. Additionally, it discusses drying and absorption towers, focusing on new materials like SX stainless steel and designs like the FiDiTM distribution system.
Slotted anodes
The document discusses slotted anodes used in the aluminum smelting process at Vedanta Aluminium Limited's facility in Jharsuguda, India. It describes how VAL implemented slotted anodes through trials and full implementation. This led to reductions in pot voltage, anode effect frequency, noise levels, and power consumption of up to 67 kWh/MT, saving 344 million units of electricity per year. It also reduced perfluorocarbon and carbon dioxide emissions by 50%. Slotted anodes improved productivity, resource conservation, and worker safety. The document compares slot heights used by other smelters and discusses online slot cutting as an alternative to press forming slots.
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Refractories and Operation of RH and RH-OB Process
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The complex relationship between human activities and the environment has been the focus
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