Power Generation & Utilities Service

Power Generation & Utilities Controls Service | Mid-South | Memphis Control Center
Power Generation & Utilities Service

Power Generation & Utilities
Controls Service — Mid-South

The Mid-South is TVA country — one of the largest public power systems in the world. Entergy serves Arkansas, Louisiana, and Mississippi. The region also has dozens of industrial cogeneration plants, independent power producers, and municipal utility systems. Controls and instrumentation failures here affect the grid. Memphis Control Center has supported power generation and industrial process facilities across the Mid-South since 1967.

Mid-South since 1967 TN · AR · MS · AL · LA Same-day parts shipping TVA & Entergy territory
Service Coverage: Tennessee Arkansas Mississippi Alabama Louisiana Gulf Coast

A Major Power Generation Region — Since 1967

Tennessee and the broader Mid-South region are home to one of the most diverse power generation mixes in the country — nuclear, natural gas, hydro, coal, and a rapidly growing renewable sector, all operating alongside significant industrial cogeneration capacity.

The Tennessee Valley Authority (TVA) — the nation's largest public power company — operates nuclear, gas, hydro, and fossil generation assets across Tennessee and northern Alabama. Entergy serves Arkansas, Louisiana, and Mississippi with a mix of nuclear, gas, and hydro generation. Mississippi's Grand Gulf Nuclear Station is the largest single-reactor nuclear plant by net capacity in the US. The Mid-South also has dozens of industrial cogeneration plants at chemical, paper, and manufacturing facilities that run high-pressure steam systems requiring the same controls expertise as utility generation.

Memphis Control Center has been supplying boiler controls, combustion instrumentation, high-pressure gaskets, and process instrumentation to power generation and industrial facilities across this region since 1967. We know the equipment, we know the environment, and we can get you the parts you need — often same day.

55+
Years in the Mid-South
Serving power generation and industrial process facilities since 1967 from Memphis, TN.
2 PM
Same-Day Parts Cutoff
Critical boiler controls, instrumentation, and gaskets ship same day on orders by 2 PM CT from Memphis.
5
States Covered
Tennessee, Arkansas, Mississippi, Alabama, and Louisiana — the full TVA and Entergy service footprint.

Power Generation Facility Types in Our Region

Natural Gas Combined-Cycle
Combined-cycle gas turbine (CCGT) plants are the dominant new build in the Mid-South. Natural gas accounted for 78% of Mississippi's electricity generation in 2024. HRSG instrumentation and combustion controls are primary service needs.
TN · AR · MS · AL · LA
Coal & Steam Generation
Aging coal fleet being replaced or converted in the region. TVA operates remaining coal units in Tennessee and Alabama. High-pressure boiler controls, LWCO systems, and burner management service needs remain substantial.
TN · AL · AR · MS
Nuclear Generation
TVA's Browns Ferry (Alabama) and Watts Bar (Tennessee) nuclear plants, plus Grand Gulf in Mississippi, River Bend in Louisiana, and Arkansas Nuclear One (ANO) near Russellville, AR — operated by Entergy Arkansas. Nuclear-adjacent instrumentation and utility services are a specialized segment.
TN · AL · MS · LA
Industrial Cogeneration (CHP)
Chemical plants, refineries, paper mills, and large industrial facilities with on-site cogeneration. High-pressure steam systems with demanding controls and instrumentation requirements. Common across all five states.
TN · AR · MS · AL · LA
Simple-Cycle Peaker Plants
Simple-cycle gas turbine peaker plants provide grid stability during high demand periods. Combustion controls, fuel gas systems, and emissions monitoring are the main service areas.
TN · AR · MS · AL · LA
Municipal & Co-op Utilities
Municipal utilities and electric cooperatives serve significant portions of the Mid-South. Many operate their own generation or substation controls — service needs for boiler controls and instrumentation are ongoing.
TN · AR · MS · AL · LA

Power Generation Controls & Instrumentation Service

From utility boiler controls to HRSG instrumentation and emissions systems — the full scope of controls service we support in power generation facilities.

Combustion Control Service

Combustion control systems manage fuel-air ratio, burner sequencing, and flame safety across utility and industrial boilers. Reliable combustion controls are a regulatory and efficiency requirement.

Burner management system (BMS) service
Flame safeguard relay service & replacement
Combustion air/fuel ratio control service
Fuel gas pressure control & regulation
Pilot gas system service & leak testing
Combustion tuning & optimization support

Boiler Instrumentation & Controls

Utility and industrial boilers require precise drum level control, steam pressure and temperature instrumentation, and safety systems. Accurate instrumentation is essential for both efficiency and safety.

Boiler drum level transmitter service & calibration
Steam pressure & temperature instrumentation
High-pressure low water cutoff service
Boiler feedwater control valve service
High-pressure gasket replacement (Topog-E® stocked)
Safety valve coordination & documentation

Turbine & HRSG Instrumentation

Gas turbine and heat recovery steam generator (HRSG) systems require precise temperature, pressure, and flow instrumentation for safe and efficient operation in combined-cycle plants.

HRSG pressure & temperature transmitter service
Steam temperature measurement & thermocouple service
Duct burner control service
Turbine exhaust temperature instrumentation
HRSG drum level control & instrumentation
Bypass stack & diverter damper control service

Emissions Monitoring & Control Systems

Continuous emissions monitoring systems (CEMS) and control systems that manage NOx, SO2, CO, and opacity are both regulatory requirements and operational tools. Accurate CEMS data is a compliance obligation.

CEMS analyzer component service & replacement
O2 analyzer & probe service
NOx analyzer calibration support
Selective catalytic reduction (SCR) instrumentation
Baghouse & precipitator control service
Stack flow monitoring instrumentation

DCS, PLC & Control System Support

Power generation facilities run on distributed control systems (DCS) and PLCs managing continuous processes. We support parts supply and service coordination for major control system platforms used in the power industry.

DCS I/O module & power supply replacement
PLC service for auxiliary & balance-of-plant systems
Control panel inspection & component replacement
VFD service on fans, pumps & conveyors
Outage parts staging & inventory support
Legacy system upgrade support & planning

Outage Planning & Parts Staging

Planned outages are the primary opportunity to perform maintenance on power generation equipment. Pre-staging the right parts — gaskets, instrumentation, controls components — is critical to staying on schedule.

High-pressure gasket kits (Topog-E® Series 450/1000/2000)
Instrumentation replacement sets for outage scope
Burner control & flame safeguard spare kit staging
LWCO replacement staging for high-pressure boilers
DCS/PLC spare parts for maintenance scope
Emergency procurement support during forced outages
Forced outage? Instrumentation or controls failure? Critical parts ship same day by 2 PM CT from Memphis.

Power Generation Controls — Key Standards & Requirements

Power generation facilities operate under specific codes and regulatory requirements that affect how controls and instrumentation are specified, maintained, and documented.

Standards affecting power generation controls and instrumentation
Standard / RegulationAuthorityRelevance to Controls & InstrumentationKey Implication
NFPA 85 Boiler & Combustion SystemsNFPABoiler and combustion systems hazard code — governs burner management systems (BMS), burner sequencing, purge requirements, and flame safeguard systems for utility and industrial boilersBMS design and operation must comply with NFPA 85; flame safeguard components must function per design at all times
CEMS — 40 CFR Part 75EPAContinuous emissions monitoring requirements for large electric generating units — requires calibrated CEMS for SO2, NOx, CO2, and volumetric flow. Data quality assurance (QA) and certification are mandatoryCEMS calibration and data quality failures result in regulatory reporting violations and potential penalties
NERC StandardsNERC / FERCNorth American Electric Reliability Corporation standards cover protection and control systems at bulk electric system facilities. Control system reliability and cybersecurity are key focus areasControl systems at grid-connected facilities may be subject to NERC CIP cybersecurity standards
ASME BPVC Section IASMEBoiler and Pressure Vessel Code Section I covers power boilers — design, construction, inspection, and pressure relief requirements for steam boilers operating above 15 psiPower boiler safety valves, low water cutoffs, and pressure controls must meet Section I requirements
State Boiler InspectionState DOLAll five states require annual inspection of power boilers by licensed inspectors. High-pressure boiler certificates must be current and postedOperating a power boiler without a current inspection certificate is a code violation
EPA MATS / MATS 2.0EPAMercury and Air Toxics Standards apply to coal-fired electric generating units — requires monitoring and control of mercury, acid gases, and particulatesMonitoring instrumentation for MATS compliance must be maintained and calibrated

Note: This table is a general reference. Specific regulatory requirements for your facility depend on your fuel type, generating capacity, permit conditions, and current compliance status. Always coordinate controls and instrumentation service work with your facility's environmental, controls, and compliance teams. Memphis Control Center supports the parts and service coordination side — we are not power industry regulatory consultants.

Common Power Generation Controls Problems

The most common controls and instrumentation issues we support in power generation and cogeneration facilities.

Controls Troubleshooting — Power Generation

Reference for plant operations and instrumentation teams. Always follow your facility's LOTO and permit-to-work procedures. Notify shift supervisor before any work on boiler, combustion, or turbine controls.

Boiler BMS lockout — unit tripped
A boiler BMS lockout requires identifying the trip condition before attempting restart. Check the BMS first-out indication — this identifies the initiating cause. Common trip conditions in utility boilers: master fuel trip (MFT) on low fuel gas pressure, loss of purge interlock, loss of all burner flames, high/low drum level trip, or forced draft fan loss. Never attempt to bypass or jumper out a BMS interlock to restart — this is a safety system. Read the first-out, verify the condition has been corrected, perform the required pre-purge, and restart per procedure. For Honeywell RM7800 and similar flame safeguard relays, check the KDM display for fault code before any reset attempt.
Honeywell RM7800 relay modules and flame amplifiers stocked — same-day shipping from Memphis.
Drum level transmitter reading drift — level control unstable
Drum level control instability in a utility or industrial boiler is a serious operating condition — both high and low drum level are dangerous. First: cross-check drum level against the gauge glass — is the actual level stable while the transmitter reading drifts? If so, the problem is in the transmitter or its impulse lines, not the actual water level. Check differential pressure (DP) transmitter reference legs for condensate issues — in high-pressure boilers, DP level measurement requires proper wet or dry reference leg setup. Temperature changes at startup and shutdown affect DP readings in a predictable way. If the gauge glass and the transmitter agree but the reading is oscillating, check the three-element level control loop tuning.
High-pressure rated DP and level transmitters available — call with process pressure and connection requirements.
HRSG drum level alarm during load changes
HRSG drum level alarms during gas turbine load changes are most commonly caused by shrink-and-swell — the normal phenomenon where drum level drops on a load increase (pressure rises, steam bubbles in the drum water collapse) and rises on a load decrease (pressure drops, bubbles form). Single-element level control cannot handle this well during rapid load changes — if your HRSG is single-element controlled, this may point to a controls upgrade need. Three-element level control (drum level, feedwater flow, and steam flow) handles load transients much better. Also check the feedwater control valve response during load ramps — a slow-responding valve will amplify shrink-and-swell effects.
HRSG-rated drum level instrumentation and control valve positioners available — call with system details.
CEMS analyzer failing daily calibration check
A CEMS failing its daily calibration check is a compliance event that must be handled per your facility's quality assurance plan (QAP). First: check the calibration gas cylinder — is it in date and the correct concentration? Check the calibration gas solenoid valves for proper operation. Check the sample conditioning system — condensate buildup in sample lines, plugged filters, or a failing cooler can affect analyzer response. For O2 analyzers specifically, check the sensor for poisoning (cross-sensitivity issues are common in high-CO or high-hydrocarbon flue gas environments). Document the failure, its cause, and corrective action per your QAP — EPA 40 CFR Part 75 requires this documentation.
CEMS analyzer components, calibration gas solenoids, and sample conditioning equipment available — call with analyzer make and model.
High-pressure boiler handhole leak during operation
A high-pressure boiler handhole leak during operation is a safety emergency — do not attempt to re-torque a leaking handhole fitting while the boiler is under pressure. Reduce load and take the boiler offline if operationally possible. Depressurize, cool, and drain before accessing the handhole. When replacing the gasket: inspect the seating surface for pitting, corrosion, or damage — a damaged seat will cause the new gasket to leak as well. Select the correct Topog-E® series for your operating pressure: Series 450 for pressures up to 450 psi, Series 1000 (spiral wound) for higher pressures, Series 2000 for extreme-pressure applications. Never use a lower-rated gasket than specified for the operating pressure.
Topog-E® Series 450, 1000, and 2000 high-pressure gaskets stocked — same-day shipping from Memphis.
VFD fault on induced or forced draft fan
A draft fan VFD fault on a utility boiler can force a unit derating or trip if the backup fan (if equipped) doesn't auto-start properly. Check the VFD fault code immediately. Common causes in power plant environments: overtemperature (the high-ambient environments in boiler buildings cause drives to run hot — check cooling air inlet filter), overcurrent from fan mechanical issues (check for bearing problems or blade issues on large fans), or input power quality problems. For large utility fans, also check the motor insulation resistance (megger test) if the drive shows a ground fault indication. Verify the auto-transfer to backup fan worked correctly before investigating the faulted drive.
VFD replacements and spare parts for major drive brands stocked — call with drive nameplate details.

Equipment Guides for Power Generation Facilities

Our technical guides cover boiler controls and steam system components used in utility and industrial power generation facilities.

Power Generation Controls Service Across the Mid-South

We support power generation and utility controls service throughout the following areas — from TVA territory in Tennessee and Alabama to Entergy's service area in Arkansas, Louisiana, and Mississippi.

Memphis
Tennessee
Nashville
Tennessee
Knoxville
Tennessee
Chattanooga
Tennessee
Jackson
Tennessee
Little Rock
Arkansas
Fort Smith
Arkansas
El Dorado
Arkansas
Russellville
Arkansas
Jonesboro
Arkansas
Jackson
Mississippi
Port Gibson
Mississippi
Hattiesburg
Mississippi
Gulfport
Mississippi
Meridian
Mississippi
Huntsville
Alabama
Birmingham
Alabama
Decatur
Alabama
Mobile
Alabama
Tuscumbia
Alabama
Baton Rouge
Louisiana
New Orleans
Louisiana
Lake Charles
Louisiana
Shreveport
Louisiana
St. Francisville
Louisiana

Port Gibson MS (Grand Gulf Nuclear Station), Tuscumbia AL (TVA Colbert area), St. Francisville LA (River Bend Nuclear Station), and Russellville AR (Arkansas Nuclear One — Entergy Arkansas) are included for their power generation significance in the region.

Power Plant Controls Issue — Need Help?

Tell us your plant type, what's happening, and where you are. Forced outage or planned maintenance — we move fast on power generation requests.

Frequently Asked Questions

What is NFPA 85 and how does it affect utility boiler controls?
NFPA 85, the Boiler and Combustion Systems Hazards Code, governs the design and operation of burner management systems (BMS) for utility and industrial boilers. It defines requirements for burner sequencing, pre-purge requirements before light-off (to prevent unburned fuel accumulation in the furnace), flame safeguard system operation, master fuel trip conditions, and emergency shutdown procedures. For utility boilers, NFPA 85 compliance means the BMS must be designed so that any loss of flame or dangerous process condition results in an automatic fuel cutoff — and that the system cannot be restarted without completing the required purge sequence. Flame safeguard relays and BMS components that fail must be replaced with units that maintain NFPA 85 compliance.
What is 40 CFR Part 75 and why does CEMS calibration matter?
40 CFR Part 75 is EPA's rule governing continuous emissions monitoring systems (CEMS) at electric generating units. It requires large power plants to continuously monitor SO2, NOx, CO2, and volumetric flow, and to report this data to EPA. The rule also requires a rigorous quality assurance program including daily calibration checks, quarterly RATA (relative accuracy test audits), and annual inspections. CEMS data is used to calculate actual emissions and determine compliance with the Clean Air Act. Failed calibration checks must be documented and the data invalidated for that period — extended CEMS outages can result in substitute data that counts against the unit's emissions cap. Maintaining calibrated, functional CEMS equipment is a direct regulatory compliance requirement.
What is shrink-and-swell and why does it cause HRSG drum level problems?
Shrink-and-swell is a phenomenon in steam drum boilers where the apparent water level changes rapidly in response to load changes — in the opposite direction from what you'd expect. When load increases and steam demand rises, boiler pressure increases briefly, causing steam bubbles in the drum water to collapse — the water "shrinks" and the level drops even though more water will eventually be needed. Conversely, when load drops and pressure falls, bubbles form and the level swells upward. In HRSGs behind gas turbines, these effects are amplified by rapid GT load changes. Single-element drum level control (level only) responds poorly to shrink-and-swell because it sees the drop and calls for more feedwater just as the level is about to recover on its own. Three-element control (drum level plus feedwater flow plus steam flow) anticipates the change and responds correctly.
Do you stock high-pressure boiler gaskets for power plant applications?
Yes — we stock Topog-E® high-pressure boiler gaskets for power plant and industrial boiler applications, including Series 450 (rated to 450 psi), Series 1000 (spiral wound for higher pressure applications), and Series 2000 (flexible graphite for extreme pressure and temperature service). Power plant and cogeneration boilers typically operate at significantly higher pressures than commercial heating boilers — correct gasket selection for your specific operating pressure and temperature is essential. Call us with your boiler operating pressure and handhole or manhole dimensions and we'll specify the right gasket. Most common sizes ship same day from Memphis.
Do you support industrial cogeneration plants in the Mid-South?
Yes — industrial cogeneration (combined heat and power, or CHP) plants at chemical facilities, paper mills, refineries, and large manufacturing plants are a significant part of our service area. These facilities run high-pressure steam systems with demanding controls requirements — burner management systems, drum level controls, steam pressure instrumentation, and high-pressure gaskets — all of which we support. The Mid-South has substantial cogeneration capacity, particularly in Louisiana's chemical corridor and in the pulp and paper industry across Alabama, Arkansas, and Mississippi. Tell us your plant type and what you need and we'll get you taken care of.
Can you help with parts staging for a planned power plant outage?
Yes — outage parts planning is one of the most valuable things we can do for power generation customers. Common outage items we stage include Topog-E® high-pressure gasket kits, low water cutoff replacements for high-pressure service (M&M Series 94/194, rated to 250 psi for Section I boilers), Honeywell RM7800 burner controls and flame amplifiers, CEMS analyzer components, DCS and PLC I/O modules, and VFD replacements. Contact us well in advance of your outage window — typically 4-8 weeks for complete outage staging — and we'll make sure the right parts are ready to ship on your schedule.

Need Power Generation Controls Service in the Mid-South?

Memphis Control Center has been supporting power generation and industrial process facilities across Tennessee, Arkansas, Mississippi, Alabama, and Louisiana since 1967. We know the equipment and we'll get you taken care of.

Family owned since 1967 TN · AR · MS · AL · LA Same-day parts by 2 PM CT TVA & Entergy territory
Power generation controls service — Mid-South

For emergencies, outside of business hours, call #901-604-7069