true vapor pressure of diesel

Verification: For more information on SIP-approved state fuel regulations see the, A list of RFG areas including geographic boundaries can be found on the. Anyone know the vapor pressure of #1 diesel fuel at. 70 deg F = 0.0090. How do you win an academic integrity case? For purposes of this License, an Authorized Site is Cherokee, Clayton, Cobb, Coweta, DeKalb, Douglas, Fayette, Forsyth, Fulton, Gwinnett, Henry, Paulding, and Rockdale, Georgia (the Atlanta RVP Area). This process takes the vapors normally emitted directly into the atmosphere when pumping gas and recycles them back into the fuel storage tanks, preventing them from polluting the air. It is defined as the equilibrium partial pressure exerted by a volatile organic liquid as a function of . terms. Conversions between the two can be found in AP 42, Fifth Edition, Volume I Chapter 7: Liquid Storage Tanks (p 7.1-54 and onwards). Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications! The value of 530 p.p.m. Already a Member? What is the vapor pressure at 25 degrees Celsius? This is not a sale; all right, title and interest in the ASTM Document (in both electronic file Additional information about RFG can be found on the. this License Agreement, that you understand it and that you agree to be bound by its You It does not store any personal data. EPA transferred the relevant 40 CFR part 80 provisions into a new set of regulations in 40 CFR part 1090. Conshohocken, PA 19428-2959 USA. Because of the V/L = 0/1, the True Vapour Pressure is a special condition of the Total Vapour Pressure. The variations characteristic of the standard method are around 15 millibar in repeatability and 25 millibar in reproducibility. (See 85 FR 78412.) This website uses cookies to improve your experience while you navigate through the website. Nashville (Middle Tennessee Area); Miami, Tampa and Jacksonville, Florida; If you do not agree to the terms of this License Agreement, promptly exit this page The engine was now manageable in size and small enough to be used in vehicles. Registration on or use of this site constitutes acceptance of our Privacy Policy. service@astm.org. How many minutes does it take to drive 23 miles? Note that the vapor density quickly escalates to 2 and greater. The early diesel engines were not small or light enough for anything but stationary use due to the size of the fuel injection pump. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. about 0.85 kg/l read These cookies track visitors across websites and collect information to provide customized ads. That for cetane is less than 1 mm mercury, yet another plus for cetane. This physical chemistry-related article is a stub. These states include Maine, New York, Texas and Vermont. No odour threshold appears to have been established for cetane. This Agreement is the entire agreement between you and ASTM relating to its subject matter. 1 What is the vapor pressure of diesel fuel? like boil water, producing vapor under pressure; or the expanding In no event will ASTMs liability exceed the amount paid by you under this License without New methodologies to calculate the vapour pressure and ideal gas and employees for their internal use within your organization; it may not be copied. access the journals other than by authorized Users. Reg. Governing Law, Venue, Jurisdiction. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. The matter of vapor pressure is important relating to the function and operation of gasoline-powered, especially carbureted, vehicles and is also important for many other reasons. Although gasoline is a mixture, octane may be used to approximate its average molecular weight as 114. As of April 12, 2021, no counties in Missouri are subject to the States 7.0 psi volatility requirement. The 1990 Clean Air Act (CAA) Amendments added a new section, 211(h), that prohibited the EPA from establishing a volatility standard more stringent than 9.0 pounds per square inch (psi) in an ozone attainment area, except that EPA may impose a lower (i.e., more stringent) standard in any former ozone nonattainment area that has been redesignated to attainment. The phenomenon of vapor pressure is explained by the . The U.S. EPA's publication "AP 42, Compilation of Air Pollutant Emission Factors", Chapter 7, Table 7.1-2 gives the following True Vapor Pressures for Kerosene (which is essentially #1 Diesel: 40 deg F = 0.0041 psia 60 deg F = 0.0085 psia 80 deg F = 0.015 psia 100 deg F = 0.029 psia (Includes part of Rocky Mtn. This is the pressure, in psi (pounds per square inch) or kPa (kiloPascals), necessary to keep a liquid from vaporizing when at 100 F (37.8 C). We have received your request and will respond promptly. The Stage II system controls the release of VOC, benzene and toxics emitted from gasoline. In chemistry, vapor pressure is the pressure that is exerted on the walls of a sealed container when a substance in it evaporates (converts to a gas). EPA published a final rule on December 26, 2017 (82 FR 60886) that relaxed the 7.8 psi federal RVP requirement for the Louisiana parishes of Beauregard, Calcasieu, Jefferson, Lafayette, Lafourche, Orleans, Pointe Coupee, St. Bernard, St. Charles, St. James, and St. Mary. You also have the option to opt-out of these cookies. Designations and exact boundaries of the ozone nonattainment areas subject to the 7.8 psi RVP standard were published in the November 6, 1991, notice that designated areas pursuant to CAA section 107(d)(4)(A)(ii). True vapor pressure of distillate fuel oil No. [1] It is defined as the THE DIESEL ENGINE IS A TYPE OF INTERNAL COMbustion engine. and hard copy) belong to ASTM. The diesel cycle was invented in 1892 by Rudolf Diesel, and he received a patent for the diesel engine in 1893. As of July 2, 2015, no Alabama counties are subject to the 7.8 psi federal volatility standard. Reg. It is the highest vapour pressure which is possible at any specified temperature. According to this definition, the TVP is the vapour pressure at a vapour-liquid ratio (V/L) = 0/1 at a specific temperature. The cookies is used to store the user consent for the cookies in the category "Necessary". However, the true vapor pressure of diesel fuel is only about 0.2 percent of the 7 psi RVP gasoline at 70 F. Please click here to see any active alerts. subject to the federal 7.8 psi RVP standard; required to sell federal reformulated gasoline (RFG); required to sell California RFG (i.e., the entire state of California); and. EPA established a two-phase reduction in summertime commercial gasoline volatility. ASTM D323-15a, Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method), Section 1.1, ASTM D323-15a, Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method), footnote 1, ASTM D323-15a, Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method), ASTM D323-15a, Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method), Sections 1.1 and 1.6, ASTM D323-15a, Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method), Sections 11.1 and 11.1.2, ASTM D323-15a, Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method), Section 8.3, Conversion between the two measures can be found, ASTM D323 - 06 Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method), Reid Vapor Pressure Requirements for Ethanol, USA's Environmental Protection Agency (EPA) publication, https://en.wikipedia.org/w/index.php?title=Reid_vapor_pressure&oldid=1133939162, Creative Commons Attribution-ShareAlike License 3.0, This page was last edited on 16 January 2023, at 05:49. Only emails and answers are saved in our archive. ASTM grants you a limited, non-transferable license as follows: equilibrium partial pressure exerted by a volatile organic liquid as a function of temperature as determined by the test method ASTM D 2879. efficiency can be much greater. The Reid vapour pressure measures the volatility of fuels. The change in vapor pressure of a pure substance as temperature changes can be described using the equation known as the Clausius-Clapeyron Equation: (1) l n P 2 P 1 = H v a p R ( 1 T 1 1 T 2) Where: P1 is the partial pressure of the liquid at T1. ASTM International is providing no-cost public access to important ASTM standards used in the production and testing of personal protective equipment. The Reid vapour pressure measures the volatility of fuels. However, one of the highest vapor pressure blendstocks, butane, also happens to be very high in octane and very cheap relative to other blendstocks. 2 Diesel Fuel Oil? EPA regulates the vapor pressure of gasoline sold at retail stations during the summer ozone season (June 1 to September 15) to reduce evaporative emissions from gasoline that contribute to ground-level ozone and diminish the effects of ozone-related health problems. As of November 23, 2018, no parishes in Louisiana are subject to the 7.8 psi federal volatility standard. Last edited on 10 September 2021, at 18:12, AP 42, Fifth Edition, Volume I Chapter 7: Liquid Storage Tanks, "Standard Test Method for Vapor Pressure-Temperature Relationship and Initial Decomposition Temperature of Liquids by Isoteniscope", ASTM D2879 - 97(2007) Standard Test Method for Vapor Pressure-Temperature Relationship and Initial Decomposition Temperature of Liquids by Isoteniscope, USA's Environmental Protection Agency (EPA) publication, https://en.wikipedia.org/w/index.php?title=True_vapor_pressure&oldid=1043557621, This page was last edited on 10 September 2021, at 18:12. Blending Ethanol in Diesel: E -Diesel Ethanol Diesel Cetane Number 8 42-50 Boiling Point, C 78 170-340 Flash Point, C 13 75 (>52) Reid Vapor Pressure, psi 2.3 <0.1 Lubricity none * Ethanol has limited solubility in diesel Fuel additive technology is used to overcome solubility, cetane number, lubricity issues Benefits: Reduced . Join your peers on the Internet's largest technical engineering professional community.It's easy to join and it's free. Click Here to join Eng-Tips and talk with other members! Promoting, selling, recruiting, coursework and thesis posting is forbidden. It is defined as the equilibrium partial pressure exerted by a volatile organic liquid as a function of temperature as determined by the test method ASTM D 2879. Figures 7.1-13b, 7.1-14b, 7.1-15 and 7.1-16 provide equations for calculating the vapor pressure of crude oil and . What is the maximum true vapor pressure of No. EPA issued a direct final rule on August 17, 2015 (80 FR 49164) that relaxed the 7.8 psi federal RVP requirement in Mecklenburg and Gaston counties. Customs duty and taxes are the responsibility of the consignee. BYJUS online vapor pressure calculator tool makes the calculation faster and it displays the vapor pressure in a fraction of seconds. Commonwealth of Pennsylvania. [1], The true vapor pressure (TVP) at 100 F differs slightly from the Reid vapor pressure (RVP) (per definition also at 100 F), as it excludes dissolved fixed gases such as air. The single hard copy print may only be distributed to other . You may terminate this Agreement at any time by You are solely responsible for maintaining the confidentiality of your The cookie is used to store the user consent for the cookies in the category "Performance". Reprints and copyright permissions can be requested through the. administered from the Authorized Site, but not persons at remote sites or campuses with separate By joining you are opting in to receive e-mail. Thank you for helping keep Eng-Tips Forums free from inappropriate posts.The Eng-Tips staff will check this out and take appropriate action. terms. Click Here to join Eng-Tips and talk with other members! It is defined as the absolute vapor pressure exerted by the vapor of the liquid and any dissolved gases/moisture at 37.8 C (100 F) as determined by the test method ASTM-D-323, which was first developed in 1930 [2] and has been revised several times (the latest version is ASTM D323-15a). journal article, please contact ASTM Customer Service, 100 Barr Harbor Dr., PO Box C700, West same maximum temperature. + ( 0.00029 ( Average Surface Temperature (deg F) 60 ) Per EPA Nat. See Air Quality Designations and Classifications; 56 Fed. These cookies ensure basic functionalities and security features of the website, anonymously. Abstract The composition, vapour pressure, and heat capacity of nine biodiesel fuels from different sources were measured. Please read AddThis Privacy for more information. A sample is placed in a container such that the ratio of the vapor volume to the liquid volume is 4 to 1. 2.3. By downloading the ASTM Document you are entering into a contract, and acknowledge that for this purpose. EPA published a final rule on April 7, 2017 (82 FR 16932) that removed Ohios rule that required the sale of 7.8 psi RVP gasoline in Butler, Clark, Clermont, Greene, Hamilton, Miami, Montgomery and Warren Counties. The Reid vapor pressure (RVP) can differ substantially from the true vapor pressure (TVP) of a liquid mixture, since (1) RVP is the vapor pressure measured at 37.8C (100F) and the TVP is a function of the temperature; (2) RVP is defined as being measured at a vapor-to-liquid ratio of 4:1, whereas the TVP of mixtures can depend on the actual vapor-to-liquid ratio; (3) RVP will include the pressure associated with the presence of dissolved water and air in the sample (which is excluded by some but not all definitions of TVP); and (4) the RVP method is applied to a sample which has had the opportunity to volatilize somewhat prior to measurement: i.e., the sample container is required to be only 70-80% full of liquid [7](so that whatever volatilizes into the container headspace is lost prior to analysis); the sample then again volatilizes into the headspace of the D323 test chamber before it is heated to 37.8 degrees Celsius.[8]. It is defined as the equilibrium partial pressure exerted by a volatile organic liquid as a function of temperature as determined by the test method ASTM D 2879. By clicking Accept All, you consent to the use of ALL the cookies. Volatility is the property of a liquid fuel that defines its evaporation characteristics. That's the value I've got and I'm sticking to it. Depending on the state and month, gasoline RVP was not to exceed 10.5 pounds per square inch (psi), 9.5 psi, or 9.0 psi. Vapor pressure is a property of a liquid based on the strength of its intermolecular forces. True vapor pressure (TVP) is a common measure of the volatility of petroleum distillate fuels. Just clear tips and lifehacks for every day. supersedes all prior or contemporaneous oral or written communications, proposals, measures necessary to ensure that the Subscriber's IP addresses are not used to IMPORTANT-READ THESE TERMS CAREFULLY BEFORE DOWNLOADING THIS DOCUMENT. This is why you need to be careful around diesel lines. to the print or online version. Ownership. The table contains the geographic boundaries of these areas. What is the injector pressure on a diesel? How is the vapor pressure of a liquid determined? This cookie is set by GDPR Cookie Consent plugin. When comparing vapor pressures we need to be making comparisons at the same temperature. Limitation of Liability. All Rights Reserved. P2 is the partial pressure of the liquid at T2. The development and the use of diesel engines in North America were largely due to the efforts of Clessie L. Cummins who, after he purchased the rights to the diesel engine in 1919, had worked with diesel engine problems prevailing at the time. As of October 16, 2015, no North Carolina counties are subject to the 7.8 psi federal volatility standard. This cookie is set by GDPR Cookie Consent plugin. Depending on the state and month, gasoline RVP may not exceed 9.0 psi or 7.8 psi. Importantly, the measured vapor pressures for eicosane are in excellent agreement with reference values, which is good evidence of the low uncertainty of the measurements on the biodiesel esters. The Subscriber will be responsible for all access control and security Petrol, kerosene, mercury and water have strong forces of attraction, so they have lower vapour pressure. Authorized Users. Vapor pressure is defined as the partial pressure of a substance in the gas phase (vapor) that exists above a sample of the liquid in a closed container. Metal 3D printing has rapidly emerged as a key technology in modern design and manufacturing, so its critical educational institutions include it in their curricula to avoid leaving students at a disadvantage as they enter the workforce. Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. These cookies will be stored in your browser only with your consent. This does not apply to complete sets and sections. Compression on most diesels is over 300 PSI. What is the cast of surname sable in maharashtra? The fuel volatility regulations have been transferred from 40 CFR 80.27 to 40 CFR 1090.215. This produces a lot of waste, due to Carnot's Law - since the Subscriber with locations in more than one city, each city is considered to be a different site. Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a parts function at the center of their design considerations. Vapor pressure does not blend linearly with . The rule was effective on May 30, 2014. Please be aware that carriers will not deliver packages to Post Office Boxes. Official websites use .gov As of October 21, 2019, no Georgia counties are subject to the federal 7.8 psi volatility standard. Please click here to view License Agreement for Educational Institutions. During the mid-1920s, trucks using diesel engines became available. use. Thus, gasoline would have a vapor density of approximately 3.9 (if it evaporates completely). That table has values for gasolines (of various Reid Vapor Pressures), crude oil, jet fuel, kerosene, diesel (#2 fuel oil) and Heavy Fuel Oil (#6 fuel oil). or non-infringement are disclaimed, except to the extent that these disclaimers are held to be Rudolf Diesel discovered diesel fuel in 1892. Milton Beychok(Contact me at www.air-dispersion.com). Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. More specifically, it is a compression ignition engine in which the fuel is ignited by exposure to the high temperature and pressure of a compressed gas instead of a separate source of ignition such as a spark plug, as is the case of gasoline engines. 6 What is the vapor pressure at 25 degrees Celsius? Milton Beychok(Visit me at www.air-dispersion.com). 90 deg F = 0.016. Vapor Pressure Calculator is a free online tool that displays the vapor pressure of a solid or liquid at a given temperature. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected. Registration on or use of this site constitutes acceptance of our Privacy Policy. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Vapor pressure testing measures the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases (solid or liquid) at a given temperature in a closed system. The substance with the highest boiling point will have the lowest vapor pressure. Chapter 9: Distillation and Vapor Pressure Data of Diesel Fuels. Copyright 2023 Quick-Advices | All rights reserved. 56,694 (Nov. 6, 1991) (codified at 40 CFR part 81). The vapour pressure of the biodiesel fuels is modeled assuming an ideal liquid phase of the fatty acid methyl esters constituting the fuel. 2 (psi) = 0.0074 This cookie is set by GDPR Cookie Consent plugin. In addition, the electronic file may not be distributed elsewhere over computer networks or The relative density of fuel, sometimes called the API specific gravity, refers to the amount of fuel per unit. Most gasoline blendstocks have vapor pressures below the maximum specification for finished gasoline, so achieving the vapor pressure specification is not difficult. By joining you are opting in to receive e-mail. Phase I was applicable to calendar years 1989 through 1991. Additional detailed information on areas where a SIP-approved state fuel rule applies can be found on the State Fuels webpage. Thus at room temperature, the substance with the lowest boiling point will have the highest vapor pressure (easiest to get into the gas phase). warranties, including any implied warranty of merchantability, fitness for a particular purpose The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". Metal 3D printing has rapidly emerged as a key technology in modern design and manufacturing, so its critical educational institutions include it in their curricula to avoid leaving students at a disadvantage as they enter the workforce. Pakistan ka ow konsa shehar ha jisy likhte howy pen ki nuk ni uthati? Thank you for helping keep Eng-Tips Forums free from inappropriate posts.The Eng-Tips staff will check this out and take appropriate action. Number 1 fuel oil is essentially kerosine. Language links are at the top of the page across from the title. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. the theory of liability, arising out of or related to the use or downloading of the ASTM The true vapor pressure (TVP) at 100 F differs slightly from the Reid vapor . 3 What is the vapor pressure of kerosene? 10 kPa Vapour pressure=1.. 10 kPa at 38 C for diesel and JP-4, 0.5.. 5 kPa at 38 C for kerosene. The purpose of this work was to determine vapor pressures for saturated biodiesel esters at the low-temperature end of their liquid range. What elements are needed by the body in small amounts? sub-licensed. The final rule was effective on April 12, 2021. of The ASTM Document. EPA published a final rule on December 22, 2017 (82 FR 60675) that relaxed the 7.8 psi federal RVP standard for Shelby County. you have For the best experience on our site, be sure to turn on Javascript in your browser. 2.4: Vapor Pressure. Vapor Pressure, also known as bubble point pressure and accurate vapor pressure, is the pressure where the primary bubble of vapor is shaped at a given temperature. Vapor or saturation pressure depends on temperature. Agreement, at its expense, and at any time during the course of normal business hours. What is a high vapor pressure? The 1920s brought a new injection pump design that allowed the introduction of fuel as it entered the engine without the need of pressurized air and its accompanying tank. customs processes and procedures in different countries, ASTM International cannot guarantee transit times to Reid vapor pressure (RVP) is a common measure of the volatility of gasoline and other petroleum products. the Authorized Site, and persons with legal access to the library's collections and facilities New methodologies to calculate the vapour pressure and ideal gas and liquid heat capacities of the biodiesel fuel constituents are proposed. This Agreement is effective until terminated. This page is not available in other languages. I need to know a typical reid vapour pressure for diesel, I fear that such a number doesnt exist from a quick literature search. True Vapor Pressure is the pressure of the vapor in equilibrium with the liquid at 100 F (it is equal to the bubble point pressure at 100 F). By downloading the ASTM Document you are entering into a contract, and acknowledge that legally invalid. Phase II is applicable to 1992 and later calendar years. An official website of the United States government. A .gov website belongs to an official government organization in the United States. subscription approximately 3.9 and federal courts of Pennsylvania for any dispute which may arise under this Agreement. The vapour pressure of the biodiesel fuels is modeled assuming an ideal liquid phase of the fatty acid methyl esters constituting the fuel. For gasoline, vapor pressure is important for both performance and environmental reasons. The boundary information in the table in 40 CFR 1090.215(a)(2) was copied from the relevant designation tables in 40 CFR part 81. This cookie is set by GDPR Cookie Consent plugin. destroying all copies (hard, digital or in any media) of the ASTM Document (journal). for individual As of that date no counties in Florida are subject to the 7.8 psi federal volatility standard. Secure .gov websites use HTTPS Copyright 1998-2023 engineering.com, Inc. All rights reserved.Unauthorized reproduction or linking forbidden without expressed written permission. Vapor pressure is an important quality specification for gasoline. Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. 2 (psi) = 0.0074 + ( 0.00029 ( Average Surface Temperature (deg F) 60 ) Per EPA publication AP-42 What is critical pressure of diesel. You (Licensee) have no ownership or other rights in the ASTM Document. Licensee agrees to submit to jurisdiction and venue in the state EPA provides a 1.0 psi RVP allowance for gasoline containing 10 percent ethanol. absolute vapor pressure exerted by the vapor of the liquid and any dissolved gases/moisture at 37.8C (100F) as determined by the test method ASTM-D-323, which was first developed in 1930 [2] and has been revised several times (the latest version is ASTM D323-15a). After a while, they become a different Already a member? The pressure exerted by the vapor phase is called the vapor or saturation pressure Vapor or saturation pressure depends on temperature. The matter of vapor pressure is important relating to the function and operation of gasoline-powered, especially carbureted, vehicles and is also important for many other reasons. this License Agreement, that you understand it and that you agree to be bound by its Hooper, ASTM International, at khooper@astm.org or phone: 610-832-9634). These rules reduce gasoline emissions of volatile organic compounds (VOC) that are a major contributor to ground-level ozone (smog). The cookie is used to store the user consent for the cookies in the category "Performance". city; however, employees of a branch campus or facility in another city are not considered to be I like it better on the conservative side of things. The vapor pressure of a liquid is defined as the pressure exerted by the molecules that escapes from the liquid to form a separate vapor phase above the liquid surface. True vapor pressure (TVP) is a common measure of the volatility of petroleum distillate fuels. For all regulated parties except retailers and wholesale purchaser-consumers, maximum standards generally take effect May 1. similar fuel would become part of a "battery". Vapor pressure is a property of a liquid based on the strength of its intermolecular forces. JavaScript seems to be disabled in your browser. What is the vapor pressure of diesel fuel? We don't collect information from our users. We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. Which is the most effective way to prevent viral foodborne illnesses? By invoking this procedure, Therefore, as of July 5, 2019, the sale of gasoline with an RVP of 7.8 psi is no longer required in the Pittsburgh area (Allegheny, Armstrong, Beaver, Butler, Fayette, Washington and Westmoreland Counties). The usual way is to burn the fuel; the heat might do something Its odour threshold is 5 p.p.m. Better now? This is why you need to be careful around . RVP is an abbreviation for Reid vapor pressure, a common measure of and generic term for gasoline volatility. However, you may visit "Cookie Settings" to provide a controlled consent. This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. User means But opting out of some of these cookies may affect your browsing experience. The relative density of diesel should be between 31 and 40. Cookies are only used in the browser to improve user experience.

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