Oscar Corona
Baytown,TX
Summary
Dependable and hard-working Instrument professional with experience in the Chemical, Gas, and Refining industry. I have excellent interpretation of specification sheets, electrical loop drawings, instrument detail drawings, P&ID's, and automation control systems. Experienced with new construction and maintenance work environments. I am continuously striving to obtain a position that is both challenging and rewarding. Currently in pursuit of my Bachelor of Science in Electrical Engineering from Lamar University.
Overview
5
5
years of professional experience
Work History
Control Systems Engineer
ExxonMobil
06.2025 - Current
- Hardware installation, deployment, and support, including Dell servers/workstations, Honeywell Experion, Honeywell TDC3000, VMware, and Cisco equipment
- Support process control applications: PHD historian, Honeywell ACM, SQL Server, vSphere, Symantec Endpoint, Acronis/Veeam backup systems
- Install and maintain Cisco and Fortinet network devices, including VLANs, Port Security, ACLs, and router/switch configuration
- Manage Active Directory (account/GPO management), Windows Server patching (WSUS)
INSTRUMENT/AUTOMATION TECHNICIAN
OxyChem
12.2021 - 06.2025
- Perform regular routine maintenance and PMs.
- Troubleshoot, calibrate, and repair temperature, pressure, level, and flow transmitters including Foxboro pneumatic controllers and transmitters 13A/15A/43AP models, smart positioners, LEL monitors, wireless transmitters and communication gateways.
- Function check and test interlocks to verify set points, alarms and system functions. Communicate with operations and DCS engineer/programmer when troubleshooting or scoping out problems.
- Respond to callouts and break-ins when unit emergencies arise and use the following equipment: Process meters, 475, Trex Communicator, Meriam Communicators, Decade Box, high- and low-pressure pumps and shop calibration bench.
- Log daily reports and fill out calibration/procedure forms, order tools and material on SAP on case-by-case job assignments
- Use PAC Machine, Studio 5000 and RSLogix to troubleshoot PLCs and make changes to programs when needed.
- Work with electricians as needed to diagnose electrical/power issues.
- Maintain and troubleshoot M4 KNICK, Rosemount, and Metler Toledo pH and conductivity meters.
- Conduct routine maintenance on Thermo Fisher Mass Specs.
INSTRUMENT TECHNICIAN
S&B Engineers and Constructors
08.2021 - 10.2021
- Function test pressure, level and flow transmitters using TREX and 475 Communicators, bench calibrate, test valves and transmitters. Sold off over 1600 plus instrument loops to Phillips 66 Instrument Technicians, and QC’s.
- Breakdown and assembly of all malfunctioning control valves and transmitters.
- Double check terminations on instruments according to electrical drawings, walk down vendor skids. Document all instruments that have been calibrated and spec checked, then upload information onto Excel spreadsheets. Measuring orifice plates with micrometer to ensure they met factory specifications.
- Work with instrument fitters when pressure testing tubing systems and involved with pre-start and start up procedures while working with plant operations to troubleshoot problems during start up phases.
INSTRUMENT TECHNICIAN / HELPER
Zachry Group/Brand
08.2020 - 07.2021
- Receive and check in instruments and valves. Bench test pneumatic valves before installation. Troubleshoot and repair any instruments that do not meet specification details.
- Use P&IDs and location drawings to confirm all instruments are correctly installed, test loops according to loop drawings and review any incorrectly installed transmitters or instruments on vendor skids.
- Use 475, TREX and Meriam to communicate with DVC positioners and smart transmitters, worked with LyondellBasell instrument techs to sell Instrument loops.
- Redline P&IDs and loop drawings, work with DCS programmer if instruments don’t communicate with DCS. Test cause and effect of control loops to verify functionality.
Education
Associate of Applied Science - Instrumentation Technology
Lee College
Baytown, TXundefined
MD4U Training Center
Baytown, TXSkills
- Proficient using SAP when inputting logs, and purchasing craft tools and material, creating POs, and planning
- Proficient with Excel, Word, and Outlook
- Experienced with Studio 5000, RS Logix, and Simatic programming software
- Experienced with different control systems including Honeywell TDC 3000, Delta V/Delta V SIS, and ABB S800xA
- Detailed and organized with daily work activities and effective with multitasking various job assignments
Timeline
Control Systems Engineer
ExxonMobil
06.2025 - Current
INSTRUMENT/AUTOMATION TECHNICIAN
OxyChem
12.2021 - 06.2025
INSTRUMENT TECHNICIAN
S&B Engineers and Constructors
08.2021 - 10.2021
INSTRUMENT TECHNICIAN / HELPER
Zachry Group/Brand
08.2020 - 07.2021
Associate of Applied Science - Instrumentation Technology
Lee College
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MD4U Training Center