Incident sharing / Lessons learned
HF Alkylation, Lessons Learned
Speaker:
Liana Siegel, Marathon Petroleum Company
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Dead-Legs in HF Alkylation Units
HF Alkylation, Mechanical Integrity
Speaker:
Representative, RP 751 Section 6 Committee
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Quantitative Risk Assessment (QRA) 101
HF Alkylation
Speaker:
Liana Siegel, Marathon Petroleum Company
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Processing ASO Safety and Impacts Phillips 66 Billings Incident
Lessons Learned, FCC, HF Alkylation
Speakers:
Ziad Jawad, Phillips 66
Liana Siegel, Marathon Petroleum Corporation
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HF Alky Isobutane Exchanger Bypass Leak
Learnings from Incidents, HF Alkylation
In 2021, hydrofluoric acid vapors were detected by the safety instrumented subsystem (SIS) line of sight laser detection system, which activated both the rapid acid dump system and the fire suppression/unit deluge system. The source of the leak was determined to be the bypass line around the isobutane recycle cooler. Topics discussed: Residual Elements, CMLs for high RE, PMI for high RE, low flow and process deadleg identification.
Speaker:
Mark Geisenhoff, Flint Hills Resource
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Casting Quality Issues in HF Alky Valves
HF Alkylation
Over the last few years, there has been an increase in through body leaks on cast HF Alkylation valves. This presentation will review several real life examples of casting failures on valves in HF Alkylation service including cross sections of the failure location. These failures have occurred on both low RE carbon steel and Alloy 400 (M35-1) castings. Some common causes of casting failures will be reviewed including sand inclusions, porosity and varying levels of shrinkage. Common locations of casting quality issues with HF Alkylation valves will be discussed including the bottom bowl area and the body to end flange transition on Alloy 400 plug valves. The presentation will also cover some of the methods that are being implemented in the industry to improve the casting quality of HF Alkylation valves along with efforts to standardize and consolidate requirements for these valves.
Speaker: Michael Alford, Marathon Petroleum
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