Development of a Company-Specific Consequence Severity Model to Improve Efficiency and Consistency in PHAs

PresentationThe consequence severity of hypothetical release scenarios developed during a Process Hazard Analysis (PHA) can be difficult to evaluate consistently. Even though most companies now have clear and concise consequence category descriptions for impacts to people, environment, assets, and business, PHA teams continue to struggle with determining the worst-credible consequence level(s). Such reasons include: Scenario has not occurred at the site, and is being ranked too low or too high. Scenario has occurred at the site, but with variable outcomes each time PHA team leader or team members influencing the ranking based on their experience/ judgment. In the AIChE Center for Chemical Process Safety (CCPS) publication Layer of Protection Analysis – Simplified Process Risk Assessment (2001), a hypothetical model is presented in Chapter 3, as the “Category Approach without Direct Reference to Human Harm”, and is presented as an example only. Developing and applying this model in a practical PHA team setting requires defining, refining and adjusting each consequence category to the facility’s hazardous chemicals and risk matrix. This paper describes adapting the hypothetical model from the CCPS LOPA book for a facility’s use. This includes defining the consequence categories, working with/ modifying existing risk matrices, consequence modeling, interpreting the results, developing/ implementing the finished Consequence Severity tool, and the benefit to future PHAs

Building Place Value Understanding Through Modeling and Structure

Place value is a concept in which students in elementary school struggle and instruction and curricular materials continue to introduce and teach place value in a disconnected fashion. This study introduced place value through a modeling perspective, focusing specifically on using the bar model to represent units and quantity. The investigation piloted a place value module highlighting the use of the bar model in four first grade classrooms with high percentages of diverse learners, many from low-income families and with limited English language proficiency. The results indicated students successfully described the differences between units of 1 and 10 and could build and describe numbers in their teens and twenties. Students’ vocabulary and understanding of place value improved over a three-week period, suggesting visual models can be used as an effective model to promote place value understanding

Ariel - Volume 11 Number 4

Executive Editor Ellen Feldman Leonardo S. Nasca, Jr. Business Managers Barbara L. Davies Martin B. Getzow News Editor Hugh A. Gelabert Features Editor Aaron D. Bleznak CAHS Editor Joan M. Greco Editorial Page Editor Samuel Markind Photography Editor Todd L. Demmy Sports Editor Paul F. Mansfiel

I\u27m Just Wild About Animal Crackers

Illustration on man with eyeglass on many animalshttps://scholarsjunction.msstate.edu/cht-sheet-music/13432/thumbnail.jp

U.S. Building-Sector Energy Efficiency Potential

This paper presents an estimate of the potential for energy efficiency improvements in the U.S. building sector by 2030. The analysis uses the Energy Information Administration's AEO 2007 Reference Case as a business-as-usual (BAU) scenario, and applies percentage savings estimates by end use drawn from several prior efficiency potential studies. These prior studies include the U.S. Department of Energy's Scenarios for a Clean Energy Future (CEF) study and a recent study of natural gas savings potential in New York state. For a few end uses for which savings estimates are not readily available, the LBNL study team compiled technical data to estimate savings percentages and costs of conserved energy. The analysis shows that for electricity use in buildings, approximately one-third of the BAU consumption can be saved at a cost of conserved energy of 2.7 cents/kWh (all values in 2007 dollars), while for natural gas approximately the same percentage savings is possible at a cost of between 2.5 and 6.9 $/million Btu. This cost-effective level of savings results in national annual energy bill savings in 2030 of nearly$170 billion. To achieve these savings, the cumulative capital investment needed between 2010 and 2030 is about $440 billion, which translates to a 2-1/2 year simple payback period, or savings over the life of the measures that are nearly 3.5 times larger than the investment required (i.e., a benefit-cost ratio of 3.5)

Parents, children and the porous boundaries of the sexual family in law and popular culture

This article focuses on a perceived ideological overlap between popular cultural and judicial treatments of sex and conjugality that contributes to a discursive construction of parenthood and parenting. The author perceives that in both legal and popular cultural texts, there is a sense in which notions of ‘natural’ childhood are discursively constituted as being put at risk by those who reproduce outside of dominant sexual norms, and that signs of normative sexuality (typically in the form of heterosexual coupling) may be treated as a sign of safety. These ideas are rooted in ancient associations between fertility, sexuality and femininity that can also be traced in the historical development of the English language. With the help of commentators such as Martha Fineman, the article situates parents and children within a discourse of family which prioritises conjugality, with consequences for the ways in which the internal and external boundaries of families are delineated

Climate Change and Student Behavior: Recommendations for the University of Richmond

We, the Environmental Studies Senior Seminar Class of 2008, choose to recognize climate change as an imminent threat. After rigorous examination of the scientific, social, and political aspects of climate change, we initially wanted to help construct the carbon emissions inventory required in the PCC. However, citing their ability to build the inventory through existing University institutions, our administration steered us towards the Scope 3 emissions inventory, a component which focuses on student behavior. While we found Scope 3 too limiting, we decided our goal as a class was to impact student climate change awareness on campus. Therefore, we separated into three “working groups” and developed three distinct projects to meet our goal: 1) develop a database of projects and initiatives other universities have implemented to address climate change; 2) execute a comprehensive survey of the student body’s understanding of global climate change and energy consumption patterns and; 3) present the University of Richmond with options and recommendations for addressing climate change on campus. Our goal is to inspire individual responses to climate change. Raising awareness does not indicate everyone will or should agree with our beliefs and convictions, but it will enable individuals to come to their own conclusions. We wholeheartedly believe climate change is an issue we cannot disregard and we stand by the belief that the risk of doing nothing is the biggest danger of them all. Paper prepared for the Environmental Studies Senior Seminar Faculty Advisor: Dr. David Salisbur

Ariel - Volume 11 Number 1

Executive Editors Ellen Feldman Leonardo S. Nasca, Jr. Business Managers Barbara L. Davies Martin B. Getzow News Editor Aaron D. Bleznak Features Editor Dave Van Wagoner CAHS Editor Joan M. Greco Editorial Page Editor Samuel Markind Photography Editor Leonardo S. Nasca, Jr. Sports Editor Paul F. Mansfiel