{"id":878,"date":"2018-02-16T14:36:11","date_gmt":"2018-02-16T19:36:11","guid":{"rendered":"http:\/\/jschaeffer.us\/sandbox\/airgasthinks\/?p=878"},"modified":"2022-06-06T18:08:53","modified_gmt":"2022-06-06T22:08:53","slug":"refinery-sector-rule-rsr-update-part-2-monitoring-flare-nhv","status":"publish","type":"post","link":"http:\/\/jschaeffer.us\/sandbox\/airgasthinks\/refinery-sector-rule-rsr-update-part-2-monitoring-flare-nhv\/","title":{"rendered":"Refinery Sector Rule (RSR) Update, Part 2: Monitoring Flare NHV"},"content":{"rendered":"<div class=\"m-entry__feedback\"><div class=\"m-feedback-prompt\">\n\t\t  <h4 class=\"m-feedback-prompt__header\">Was this article helpful?<\/h4>\n\t\t  <a href=\"#\" class=\"m-feedback-prompt__button m-feedback-prompt__social m-feedback-prompt__social_thumbsup yes\" data-analytics-link=\"feedback-prompt:yes\">\n\t\t    <i class=\"fa fa-thumbs-up\">&nbsp;<\/i>\n\t\t  <\/a>\n\t\t  <a href=\"#\" class=\"m-feedback-prompt__button m-feedback-prompt_form no\" data-analytics-link=\"feedback-prompt:no\">\n\t\t    <i class=\"fa fa-thumbs-down\">&nbsp;<\/i>\n\t\t  <\/a><br>\n\t\t  <div class=\"m-feedback-prompt__display m-feedback-prompt__social yes\">\n\t\t    <p class=\"m-feedback-prompt__text\">Awesome, share it:<\/p>\n\t\t    <a class=\"m-feedback-prompt__social--button p-button-social has-icon facebook fa fa-facebook\" href=\"https:\/\/www.facebook.com\/sharer\/sharer.php?u=http:\/\/jschaeffer.us\/sandbox\/airgasthinks\/refinery-sector-rule-rsr-update-part-2-monitoring-flare-nhv\/\" onclick=\"javascript:window.open(this.href,\n  '', 'menubar=no,toolbar=no,resizable=yes,scrollbars=yes,height=600,width=600');return false;\">\n\t\t      <span class=\"p-button-social__social-text\">Share<\/span>\n\t\t    <\/a>\n\t\t    <a class=\"m-feedback-prompt__social--button p-button-social has-icon twitter fa fa-twitter\" href=\"https:\/\/twitter.com\/intent\/tweet?url=http:\/\/jschaeffer.us\/sandbox\/airgasthinks\/refinery-sector-rule-rsr-update-part-2-monitoring-flare-nhv\/&text=Refinery Sector Rule (RSR) Update, Part 2: Monitoring Flare NHV\" onclick=\"javascript:window.open(this.href,\n  '', 'menubar=no,toolbar=no,resizable=yes,scrollbars=yes,height=600,width=600');return false;\">\n\t\t      <span class=\"p-button-social__social-text\">Tweet<\/span>\n\t\t    <\/a>\n\t\t    <a class=\"m-feedback-prompt__social--button p-button-social has-icon googleplus fa fa-google-plus\" href=\"https:\/\/plus.google.com\/share?url=http:\/\/jschaeffer.us\/sandbox\/airgasthinks\/refinery-sector-rule-rsr-update-part-2-monitoring-flare-nhv\/\" onclick=\"javascript:window.open(this.href,\n  '', 'menubar=no,toolbar=no,resizable=yes,scrollbars=yes,height=600,width=600');return false;\">\n\t\t      <span class=\"p-button-social__social-text\">Google Plus<\/span>\n\t\t    <\/a>\n\t\t    <a class=\"m-feedback-prompt__social--button p-button-social has-icon linkedin fa fa-linkedin\" href=\"https:\/\/www.linkedin.com\/shareArticle?mini=true&url=http:\/\/jschaeffer.us\/sandbox\/airgasthinks\/refinery-sector-rule-rsr-update-part-2-monitoring-flare-nhv\/&title=Refinery Sector Rule (RSR) Update, Part 2: Monitoring Flare NHV\" onclick=\"javascript:window.open(this.href,\n  '', 'menubar=no,toolbar=no,resizable=yes,scrollbars=yes,height=600,width=600');return false;\">\n\t\t      <span class=\"p-button-social__social-text\">LinkedIn<\/span>\n\t\t    <\/a>\n\t\t  <\/div>\n\t\t  \t<div class=\"m-feedback-prompt__display m-feedback-prompt__form no\">\n\t\t  \t<div class=\"thanks feedback-nodisplayall\"><h2>Thanks!<h2><div class=\"m-contact\"><p>Thanks for getting in touch with us.<\/p><\/div><\/div>\n\t\t    <form id=\"contact-form\" class=\"new_support_request\" action=\"\" accept-charset=\"UTF-8\" method=\"post\">\n\t\t    <input type=\"hidden\" id=\"authenticity_token\" name=\"authenticity_token\" value=\"659de24d36\" \/><input type=\"hidden\" name=\"_wp_http_referer\" value=\"\/sandbox\/airgasthinks\/wp-json\/wp\/v2\/posts\/878\" \/>\n\t\t      <input value=\"http:\/\/jschaeffer.us\/sandbox\/airgasthinks\/refinery-sector-rule-rsr-update-part-2-monitoring-flare-nhv\/\" type=\"hidden\" name=\"currenturl\" id=\"currenturl\">\n\t\t      <input value=\"Refinery Sector Rule (RSR) Update, Part 2: Monitoring Flare NHV\" type=\"hidden\" name=\"currenttitle\" id=\"currenttitle\">\n\t\t      <label class=\"is-required\">Help us improve. Give us your feedback:<\/label>\n\t\t      <textarea class=\"p-input__textarea\" name=\"feedbackmessage\" id=\"feedbackmessage\"><\/textarea>\n\t\t      <label class=\"is-required\">Your Full Name:<\/label>\n\t\t      <input class=\"p-input__text\" type=\"text\" name=\"feedbackfullname\" id=\"feedbackfullname\">\n\t\t      <label class=\"is-required\">Your email address:<\/label>\n\t\t      <input class=\"p-input__text\" type=\"text\" name=\"mailinglistemail\" id=\"mailinglistemail\">\n\t\t      <div class=\"feedback-message\" id=\"feedback-message\"><\/div>\n\t\t      <div class=\"__submit\">\n\t\t        <input type=\"submit\" name=\"commit\" value=\"Submit\" class=\"p-button\" id=\"submit-contact-form\" data-analytics-link=\"feedback-prompt:submit\">\n\t\t      <\/div>\n\t\t\t<\/form>\n\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<\/div><h4 class=\"p2\"><span class=\"s1\"><b>A Defined Destination with Numerous Paths<\/b><\/span><\/h4>\n<p class=\"p2\"><span class=\"s1\"><a href=\"http:\/\/jschaeffer.us\/sandbox\/airgasthinks\/refinery-sector-rule-rsr-update-nhv-management\/\">Compliance guidelines<\/a> for Refinery Sector Rule (RSR) monitoring are set forth in great detail in the Rule. In fact, there are enough details in various locations to create abundant opportunities for clarification and double checks, ensuring that all points are covered.<\/span><\/p>\n<p class=\"p2\"><span class=\"s1\">There are also plenty of different paths sites are taking to achieve compliance. This variety is based largely on factors such as:<\/span><\/p>\n<ul class=\"ul1\">\n<li class=\"li2\"><span class=\"s1\">What systems are already in place for Ja or CD compliance<\/span><\/li>\n<li class=\"li2\"><span class=\"s1\">Needs for integration with NHV control<\/span><\/li>\n<li class=\"li2\"><span class=\"s1\">H2 speciation credits and costs<\/span><\/li>\n<li class=\"li2\"><span class=\"s1\">Calibration standards requirements and engineering<\/span><\/li>\n<\/ul>\n<p class=\"p2\"><span class=\"s1\">It\u2019s also common for there to be new discoveries along the way\u2014but it all starts with a base understanding of the Rule and some of its many facets. Leverage the information below to inform your journey to compliance.<\/span><\/p>\n<h4 class=\"p2\"><span class=\"s1\"><b>Addressing NHV Monitoring <\/b><\/span><\/h4>\n<p class=\"p2\"><span class=\"s1\">Key monitoring related sections of the Rule outline applicable Analyzer technology options for compliance\u2014along with guidelines for ongoing operational management to assure performance is within specification. Also included in the performance guidelines are options for calibration, which have generated creation of a new Flare Class Btu standards.<\/span><\/p>\n<p class=\"p2\"><span class=\"s1\">The principle objective of the RSR is to improve destruction of Hazardous Air Pollutants (HAPs) in the flare combustion zone. This includes the primary requirement to maintain &gt;270 BTU Net Heating Value in the flare combustion zone (NHV<\/span><span class=\"s2\"><sub>cz<\/sub><\/span><span class=\"s1\">) during consecutive 15-minute time blocks. The NHV<\/span><span class=\"s2\"><sub>cz<\/sub><\/span><span class=\"s1\"> calculation requires monitoring of flare tip steam or air assist flow in order to subtract inert gas impacts from the measured flare gas stream. The associated requirement limiting the duration of flare smoking events further complicates decision making on Analyzer technologies and how to achieve the best balance of information speed and detail for various streams.<\/span><\/p>\n<h4 class=\"p2\"><span class=\"s1\"><b>Analyzer Options<\/b><\/span><\/h4>\n<p class=\"p2\"><span class=\"s1\">The recently published EPA ALT-124 notes that the Rule outlines the use of Calorimeters \u201cor equipment that determines the concentration of individual components in the vent gas [\u2026] such as a gas chromatograph\u201d for flare gas testing. This document notes that all monitoring equipment must meet minimum \u201caccuracy, calibration and quality control requirements.\u201d It goes on to add mass spectrometry as an acceptable mode of flare gas testing based on meeting additional provisos outlined in the letter.<\/span><\/p>\n<p class=\"p2\"><span class=\"s1\">Calorimeters provide a direct calculation of Btu NHV as a lump sum value. The measurement methods can vary depending on the specific analyzer, making some more applicable for use in flare applications than others. This calculation is available on a \u2018near real time\u2019 basis which can provide a valuable tool for steam or air assist and supplemental fuel gas control.<\/span><\/p>\n<p class=\"p2\"><span class=\"s1\">Gas chromatographs<\/span><span class=\"s3\"> (GCs) and mass spectrometers <\/span><span class=\"s1\">measure flare stream components and then provide Btu NHV as a calculated value. GCs<span class=\"Apple-converted-space\">\u00a0 <\/span>typically provide one to two readings per 15-minute block while mass spec readings are closer to \u2018real time.\u2019<span class=\"Apple-converted-space\">\u00a0 <\/span>NHV calculations for compliance are based on Table 12 of the Rule. This is further supplemented by language defining calculation of various isomers and unknown components \u201cdetected in the analysis that elute after n-pentane.\u201d The analysis of various components by GCs and mass specs can help isolate flare gas components to specific process streams and possibly prove useful for trouble shooting.<\/span><\/p>\n<h4 class=\"p2\"><span class=\"s1\"><b>Table 12 and Hydrogen<\/b><\/span><\/h4>\n<p class=\"p2\"><span class=\"s1\">Hydrogen is typically assigned an NHV of 274 Btu\/scf. Table 12 provides an adjusted allowance of 1212 Btu\/scf for hydrogen if it is specifically measured and quantified in a flare stream. This can have significant impacts for streams that are subject to high hydrogen concentrations. Options for capturing this benefit include:<\/span><\/p>\n<ul class=\"ul1\">\n<li class=\"li2\"><span class=\"s1\">Addition of a hydrogen measuring device to a calorimeter to provide an adjusted calculation value where calorimeters are used as stand-alone devices;<\/span><\/li>\n<li class=\"li2\"><span class=\"s1\">Use of the GC reported hydrogen value for calculation where a calorimeter is used with a GC for more real-time control value or as a standalone where a GC is used with other equipment for flare control;<\/span><\/li>\n<li class=\"li2\"><span class=\"s1\">Use of mass spec for hydrogen and near real-time values in the same analyzer.<\/span><\/li>\n<\/ul>\n<p class=\"p2\"><span class=\"s1\">Not all streams contain enough hydrogen to warrant speciation.<\/span><\/p>\n<h4 class=\"p2\"><span class=\"s1\"><b>Performance Specifications and Calibration Gases<\/b><\/span><\/h4>\n<p class=\"p2\"><span class=\"s1\">Specifications for validating analyzer accuracy and performance along with associated calibration gases are distributed throughout the Rule in the written guidelines, tables 12 and 13, definitions and PS-9.<\/span><\/p>\n<p class=\"p2\"><span class=\"s1\">Calorimeter calibration is principally per \u201cmanufacturer\u2019s recommendations at a minimum\u201d with a few additional requirements added.<\/span><\/p>\n<p class=\"p2\"><span class=\"s1\">GC and mass spec calibration standards generally call for establishment of a mid-point standard for daily use\u2014accompanied by a low standard at 40-60% of mid and a high standard at 140-160% of mid for quarterly testing. Mid-point, high and low value testing results are all based on individual component responses and not Btu targets which were included in some previous consent decrees.<\/span><\/p>\n<p class=\"p2\"><span class=\"s1\">There are two options for development of calibration gas mixtures. Option A is tied to pre-survey based definition of components\u2014some required and others optional. Option B outlines use of a surrogate gas consisting of C1 through C5 components plus hydrogen.<\/span><\/p>\n<h4 class=\"p2\"><span class=\"s1\"><b>The Calibration Challenge<\/b><\/span><\/h4>\n<p class=\"p2\"><span class=\"s1\">\u201cFlare Class\u201d Btu Calibration Standards vary significantly from traditional Btu custody transfer standards with their own set of reference conditions and treatment of isomers and analytes to determine NHV for various components. Attention to detail in formulation of blend compositions and COA reporting can provide positive significant impacts for ongoing operations and compliance management.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Was this article helpful? &nbsp; &nbsp; Awesome, share it: Share Tweet Google Plus LinkedIn Thanks!Thanks for getting in touch with &hellip; <a href=\"http:\/\/jschaeffer.us\/sandbox\/airgasthinks\/refinery-sector-rule-rsr-update-part-2-monitoring-flare-nhv\/\" class=\"more-link\">Read More<\/a><\/p>\n","protected":false},"author":3,"featured_media":879,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false},"categories":[24],"tags":[],"yst_prominent_words":[599,593,1613,1615,223,1612,592,1614,591,585,590,79,596,600,594,598,576,597,589,595],"_links":{"self":[{"href":"http:\/\/jschaeffer.us\/sandbox\/airgasthinks\/wp-json\/wp\/v2\/posts\/878"}],"collection":[{"href":"http:\/\/jschaeffer.us\/sandbox\/airgasthinks\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/jschaeffer.us\/sandbox\/airgasthinks\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/jschaeffer.us\/sandbox\/airgasthinks\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"http:\/\/jschaeffer.us\/sandbox\/airgasthinks\/wp-json\/wp\/v2\/comments?post=878"}],"version-history":[{"count":3,"href":"http:\/\/jschaeffer.us\/sandbox\/airgasthinks\/wp-json\/wp\/v2\/posts\/878\/revisions"}],"predecessor-version":[{"id":1848,"href":"http:\/\/jschaeffer.us\/sandbox\/airgasthinks\/wp-json\/wp\/v2\/posts\/878\/revisions\/1848"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/jschaeffer.us\/sandbox\/airgasthinks\/wp-json\/wp\/v2\/media\/879"}],"wp:attachment":[{"href":"http:\/\/jschaeffer.us\/sandbox\/airgasthinks\/wp-json\/wp\/v2\/media?parent=878"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/jschaeffer.us\/sandbox\/airgasthinks\/wp-json\/wp\/v2\/categories?post=878"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/jschaeffer.us\/sandbox\/airgasthinks\/wp-json\/wp\/v2\/tags?post=878"},{"taxonomy":"yst_prominent_words","embeddable":true,"href":"http:\/\/jschaeffer.us\/sandbox\/airgasthinks\/wp-json\/wp\/v2\/yst_prominent_words?post=878"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}