Chattanooga, Tennessee · PE licensed in TN, KY & MS
Controls expertise on your side of the table.
Consulting, owner's engineering and vendor integration for power plant control systems, from system planning through commissioning.
- PE · TN · KY · MSProfessional Engineer licensure
- ISO 9001-alignedDocumented quality management system
- CC · CT · FossilCombined cycle, combustion turbine and fossil units
- 16 yearsIn power generation, owner and engineering-firm side
Services
What we do
An experienced controls engineer on the owner's side: planning upgrades, holding vendors to the specification, and making their systems work in your plant.
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Owner's engineering
A technical partner on the owner's side of the contract: scopes and specifications, bid evaluations, and review of EPC and vendor deliverables.
Scope & specifications · Bid evaluation · Design review · Construction & commissioning support
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Consulting & studies
Condition assessments, life-extension and upgrade-alternative studies, and subject-matter support on turbine controls, excitation and DCS.
Condition assessments · Life-extension studies · Upgrade alternatives · Technical SME
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Vendor solution integration
OEM control, excitation and monitoring packages brought into your plant: interface, I/O and interconnection design, logic diagrams and control narratives your integrator can build from independently, and vendor drawings merged into your drawing set.
Interface & I/O design · Interconnection diagrams · Logic diagrams & control narratives · Vendor drawing integration
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Network architecture & system planning
Control system networks designed for redundancy and security, and multi-year plans for migrating aging platforms.
Network architecture · OT security & NERC CIP · Migration roadmaps · Upgrade sequencing
Control systems
Systems we know first-hand
Design, upgrade and commissioning experience with the turbine, plant and generator controls found in combined cycle, combustion turbine and fossil plants.
- Turbine controlGE Mark V · Mark VI · Mark VIe
- Distributed controlEmerson Ovation · Siemens T3000
- Generator excitationGE EX2000 · EX2100e
- Static startingGE LS2100e LCI
- Machinery protectionBently Nevada 3500
- OT securityEmerson PWCS · NERC CIP · Cisco firewalls
- Plant networksModbus TCP · EGD · OPC
- InstrumentationISA-5.1 P&IDs · 4–20 mA / HART · Valve sizing
Product names are trademarks of their respective owners and are listed to describe experience, not affiliation.
How we work
From assessment to commissioning
- 01
Assess
Walkdowns, existing drawings and system records establish what is installed and where the risks are.
- 02
Plan & specify
Options weighed, a plan agreed, and specifications written so every vendor bids the same scope.
- 03
Integrate & review
Vendor designs reviewed against the specification and integrated into your plant, with an independent check on safety-related work.
- 04
Commission & close out
On-site consultation through commissioning, and field changes captured in the record drawings.
About
Sixteen years in power plant controls
MAC Engineering LLC is led by Jason McCroskey, PE, who spent 16 years in power generation before founding the firm, working on both the utility owner side and the engineering-firm side.
He has led I&C work from study through commissioning on combined cycle, combustion turbine and fossil units: turbine control and DCS upgrades, excitation and static starter replacements, remote DCS operation on redundant networks, and OT security designs. As acting I&C discipline lead, he reviewed other engineers' deliverables and mentored junior staff.
B.S. Mechanical Engineering, University of Tennessee at Chattanooga, cum laude. Licensed Professional Engineer in Tennessee, Kentucky and Mississippi.
Let's talk about your project
Tell us about the plant, the system and what you are planning.
- Office
- Chattanooga, Tennessee