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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Best Practices & Technologies for Processing a Variable Crude Diet
Crude, Coking
Successfully processing a changing crude diet can be a challenge from the tank farm through distillation. Upsets and performance reductions lead to processing cost penalties downstream, loss of production, and environmental impacts through greater emissions and brine water quality issues. Optimizing the design, operational parameters and chemical injection schema from crude receipts through the hot train can minimize these cost penalties and ensure performance is maintained.
Facilitators:
Greg Cantley, Marathon
Jeff Zurlo, Veolia
Speaker: Sylvain Fontaine, Veolia
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API RP 751 Section 6
HF Alkylation, Mechanical Integrity
Join this session to hear the latest on API's 5th edition of Recommended Practice (RP) 751, Safe Operation of Hydrofluoric Acid Alkylation Unit. In this session, we're discussing maintenance from the operator perspective, integrity management and other safety programs for hydrofluoric (HF) acid alkylation units.
Facilitator: Herb Haught, CVR Energy
Speaker: Monica Plowman, Ethos Mechanical Integrity
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