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These digital transcripts are meant to share information on process safety practices in order to help improve process safety performance and awareness throughout industry. The goal is to capture and share knowledge that could be used by other companies or sites when developing new process safety practices or improving existing ones. The documents being shared have been used by an industry member, but this does not mean it should be used or that it will produce similar results at any other site. Rather, it is an option to consider when implementing or adjusting programs and practices at a site. ​

BY THEMSELVES, THESE DIGITAL TRANSCRIPTS ARE NOT STANDARDS OR RECOMMENDED PRACTICES. THEY ARE NOT INTENDED TO REPLACE SOUND ENGINEERING JUDGMENT. THEY DO NOT PRECLUDE THE USE OF ALTERNATIVE METHODS THAT COMPLY WITH LEGAL REQUIREMENTS. A SUBJECT MATTER EXPERT SHOULD BE CONSULTED PRIOR TO DETERMINING WHETHER A PRACTICE CAN BE USED IN ANY SPECIFIC SITUATION. 

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(2014) Question 50: What strategies have you used for maintaining the ratio of cracked/SR (Straight Run) feed for hydrotreating units as the coker cycles through coke drums?

What strategies have you used for maintaining the ratio of cracked/SR (Straight Run) feed for hydrotreating units as the coker cycles through coke drums?
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(2014) Question 51: What is your minimum Cloud Point Improvement that makes economic sense to apply catalytic dewaxing vs. traditional (i.e. additives and kero blending) Cold Flow Improvement methods?

At low temperatures, products with “waxy” components start to crystallize and affect the flow characteristics of the product. To avoid problems of fuel supply to an engine or lubricating problems under low temperature conditions, diesel fuels and lube oils often have stringent specifications on flow properties at low temperature.
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(2014) Question 52: Explain the differences with renewable and Biodiese. Can renewable feedstocks be co processed with traditional diesels in an existing ULSD (Ultra Low Sulfur Diesel) unit and how does this impact RIN's (Renewable Identification Number)?

Renewable Diesel is a hydrocarbon. Commercially, Renewable diesel is made from hydrotreating vegetable oil & animal fat. Renewable diesel must meet the specifications for diesel, either ASTM D 975 or D 396 in the United States.
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(2014) Question 53 How are you planning to meet Tier III gasoline specifications? Please share your strategies for post-treat and pre-treat options, feedstock selection and catalyst technology? Can renewable feedstocks be co-processed with traditional diesels in an existing ULSD (Ultra Low Sulfur Diesel) unit and how does this impact RIN's (Renewable Identification Number)?

FCC gasoline has the highest sulfur content and is also the largest volume component of the mogas pool of a typical US refinery.
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(2014) Question 54: What methods and technologies are you using to monitor vapor pressure and H2S levels in the vapor space in crude railcars and trucks? What engineering controls are being used by the rail and trucking companies to ensure that the vapor pressure and H2S are being met?

What methods and technologies are you using to monitor vapor pressure and H2S levels in the vapor space in crude railcars and trucks? What engineering controls are being used by the rail and trucking companies to ensure that the vapor pressure and H2S are being met?
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(2014) Question 55: What operating procedures and designs are you using to increase the safety of drilling coke drums?

What operating procedures and designs are you using to increase the safety of drilling coke drums?
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