Dawson T.

Experience

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  Chemical Engineer UCLA

  Jan 2013 - Apr 2013

  Teaching Assistant (Heat Transfer)

  Weekly grading, tutoring, and lecturing on assignments in the subject of Heat Transfer

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  CVR Energy, Inc

  May 2013 - Aug 2014

  Process Control Engineer

  1). Troubleshot and maintained Honeywell DCS System1-1). experienced with plant turnaround2). Developed and implemented process control schemes and control techniques.Such as building TPS, C300, Scada points and tuning existing process controllers.3) Implemented and maintained Honeywell APC (Advance Profit Controller)3-1). Crude Distillation unit Honeywell APC design, modeling, and implementation (Engineering Project)3-2). Modified sub-models for the existing Hydrobon Debutanizer APC due to process changes3-3). Tuned Hydrobon Debutanizer APC to reach desired control performance4). Developed and reviewed control logic on GE Proficy and Allen Bradly RSLogix PLCs4-1). Developed and implemented Cooling Tower PLC using GE Proficy to replace the current control system and brought the process points to Honeywell Experion through SCADA4-2). Improved and Modified the Lime Silo PLC in RSLogix 5005). NIR analyzers maintenance6). Historized process points using PHD7). Managed and collaborated MOCs 8). Collaborated with board operators and instrumentation personnel9). Utilized Flowel to update flow factors and manage Flowel Database Show less

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  Air Products

  Sept 2014 - Sept 2017

  Advanced Process Controls Engineer

  Using Aspen DMC plus as a Model based Predictive Control application platform to economically optimize cryogenic processes (Air Seperation Unit (Cryo-Distillation), Nitrogen Liquefier, Hydrogen Liquefier, Gaseous Product Pipeline and Steam Methane Reforming (Hydrogen or Syngas)Remarkable Accomplishment: Successfully implemented the first DMC application for Liquefied Hydrogen Process in Air Products. The DMC project on the liquefied Hydrogen Process was incomplete and unsuccessful for nearly 10 years. 1). Collaborate with Process Engineer/ Operators to strategically design process control network for MPC in terms of plant optimization and ease of operation2). Implement Aspen DMC on cryogenic processes as a project lead (no supervision) to provide stable operation, increase throughput, improve product recovery, and reduce utility cost. Three new MPC projects in ASU on To-Do list.3). Refine/Retrofit existing MPC models/internal logics/control strategy to meet plant operation changes or performance improvement4). Continuously support (24-7), monitor and tune MPC performance on eight plants in different type of processes in North of America. Each of eight plants may have more than one MPC controllers plantwide.5). MPC server maintenance and troubleshoot e.g. issues with DCS communication, licensing update, server upgrade and etc.6). Experienced with Aspen InfoPlus.21 historianContribute over total 1 million dollars per year since employment by implementing Advanced control applications without supervision.Maintaining Air Products home-grown Advanced control system for four Air Separation plants. Show less

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  ExxonMobil

  Oct 2017 - Aug 2020

  Ethane cracking Process including feed system, furnaces, and primary fractionator in Olefins plant.Honeywell Experion C300 and Aspen DMCPlus/ DMC3 Process controls in Aromatics complexHoneywell DCS TDC3000 and Aspen DMC plus

  • Process Control Application Engineer

    Jan 2019 - Aug 2020

  • Process Control Applications Engineer

    Oct 2017 - Jan 2019
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  Air Products

  Aug 2020 - Dec 2021

  Senior Production Engineer

  Supporting La porte/Baytown Air Separation Units (Two of biggest air separation units in Air Products) and La Porte Liquid Hydrogen plant (commissioning, startup and operation support) in terms of production optimization using statistical tools, site projects, production coordination, production growth initiatives, prioritizing maintenance tasks, alarm management, reliability and motoring young engineers/interns.

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  INEOS

  Dec 2021 - Jan 2023

  Senior Process Controls Engineer

  Chocolate Bayou Olefins - Aspen DMC * Provide consultation of how to improve DMC performance * revamping depropanizer ** MV/CV pairing ** DCS base layer retuning - Honeywell TDC and C300- Provide root cause analysis for problematic control loops- Process control loop design * Designed and Implemented Furnace NOx/Ammonia Slip environmental Control Scheme ** Reduce the environmental non-compliance to "0" in normal operation and in fair condition of SCR catalyst - PID loops optimal retune * Resolved year-longs critical loop performance problem such that operators no longer need to babysit the loops * Eliminated Ethylene recovery tower level control valve swings +/- 20% at high frequency (for years) while reducing Ethylene waste into fuel system by over 50% * Reduced COTs control loop variation to provide steady ethylene conversion and improve furnace run time- Process Hazard Analysis- Alarm management * Reduce nuisance alarm counts by 70% * Play an essential role in alarm rationalization marathon ** Helped identify critical gaps between alarms and operations to improve stable operation- Mentoring and training young control engineers * Promote benefit of advanced strategic control techniques to optimize process control peformance * Managed the site to purchase the loop tuning software - 247 plant support Show less

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  Chevron Phillips Chemical Company

  Jan 2023 - now

  Process Controls and APC Engineer

  Summary: Debottlenecking NGL process via strategic process controls to improve operation stability and profitability by applying advanced regulatory process control in DCS and in Aspen DMC, revamping process control schemes, and fine tune control loops using "Recipe" tuning approaches. Via strategic control implementations, over $10 million/yr profit was generated- developing feed maximization control scheme and lead the effort to champion operation norm changes-troubleshooting process performance deficiencies and providing guidance to bring process on performance/stable operation track-debottlenecking process unit constraints by re-designing process control schemes, implementing advanced regulatory controls, or implementing multivariable process control applications * Re-designed an entire De-ethanizer tower control scheme to maximize feed by 10% and minimize overhead vapor flow to optimize utility usage-Improving DCS loop utilization, tunings, and design to achieve minimum variation and push process constraints for process optimization- designing and implementing advanced regulatory control scheme to provide optimal performance *implemented feedforward ARC on a De-ethanizer to reduce overhead impurity variation by 90% * Revamped on a different De-ethanizer control scheme for better performance to reduce overhead impurity by 2%- Building mathematical models/inferential models to enhance process controls- Design, Implement, and refine Aspen DMC to improve and maintain optimization profitability * Olefins Furnace DMC3 design, development and implementation * refined NGL C3 splitter DMC to minimize variation and push constraints closer to operation envelops * repaired Olefins C3 splitter DMC to push correct constraints and reduced overhead/bottom impurity variations * working on a DMC for a C4 splitter (feed limiter) to maximize feed throughput in entire NGL- Alarm management/DCS Projects/Daily operation supports Show less