CASE-074 · Engineering case

Restoring Automated Batch-Temperature Control

Restored automated steam-temperature control for a reduction process operating with degraded piping and failing valves.

Conceptual engineering visualization: Reduction System Steam Repair and Temperature Control Retrofit
Conceptual engineering visualization · AI generated

Why the Work Mattered

Purpose and Operating Need

The process had operated for more than 10 years with nonfunctional batch-temperature control. Manual throttling, overnight temperature excursions, valve wear, pipe erosion, steam leaks and non-code repairs created the need for a coordinated piping and controls repair.

Engineering Approach

Engineering Approach

scoped and coordinated the repair, with mechanical fabrication and installation assigned to the mechanical contractor and controls design and startup assigned to the controls integrator. The scope covered steam piping, a bypass and diffuser loop, temperature controllers with timers, 3-inch control valves and actuators, RTDs, a stainless control panel, 120 V control power, wiring, actuator-air and condensate interfaces, insulation, and commissioning tests.

Outcome & Engineering Context

Outcome and Context

Restored automated temperature control and reduced unsafe manual operation. The four-to-six-week outage and the $99,856.86 option-study estimate describe the planning basis, not final duration or project actuals.

Workstream Results & Impact

Workstream Portfolio Rollup

16,297,000 USD

Steam and Boiler System Modernization

Recorded workstream portfolio reference. This is the workstream-level value and is not a project expenditure or a new total of reassigned projects.

Measures & Operating Detail

MeasureValueType & meaningAttribution & operating context
Engineering scope and design basis

Restored safe automated steam temperature control to a high-margin reduction process that had been operating manually on degraded piping and failing valves.

Reduced batch-loss risk, operator burden, steam-leak exposure, unsafe manual throttling, and non-code repair risk.

The reduction process had been in complete disrepair with nonfunctional batch temperature control for more than 10 years, operator manual throttling, uncontrolled overnight temperature events, valve wear, pipe erosion, steam leaks, and non-code repairs requiring demolition.

Coordinated replacement of the failed steam system, assigning mechanical fabrication and installation to mechanical contractor and controls/system design and startup to controls integrator. Scope included steam piping and bypass/diffuser loop, UDC 2500 controllers, valve supplier V150 3-inch valves with 2052 actuators, instrumentation supplier RTDs, a stainless control panel, 120V control power, wiring, actuator-air and condensate interfaces, insulation and commissioning/testing, with a planned four-to-six-week outage.

Planned outage window of four to six weeks.

Coordinated the reduction-system repair to restore safety and controllability, using a four-to-six-week planned outage and a $99,856.86 option-study estimate comprising mechanical contractor's $58,556.86 mechanical scope and controls integrator's $41,300 controls/startup scope.

option-study estimate; mechanical contractor; controls integrator;4-6 week outage.

Coordinated mechanical contractor mechanical fabrication/installation and controls integrator controls/system design and startup for the steam-piping, control-valve, temperature-controller, RTD, wiring and insulation retrofit.

Improved process safety and controllability by restoring steam delivery and automated batch-temperature control.

Improved process safety and controllability by restoring automated temperature control and eliminating manual steam throttling on degraded piping.

Project scope and individual work packages are presented separately; project totals are not additive to their component values.

Restored automatic temperature control and eliminated manual steam throttling within the documented repair boundary. The option-study estimate and outage plan were planning inputs, separate from final project actuals.

1 detail rows; 250 K project-family value.

Steam Distribution and Batch-Temperature Control

Actions, Methods & Controls

ACTIVITIES IN CONTEXT

Additional Technical Detail

Roles & contributions
  • Project Ownership

    Full lifecycle project ownership

    Owned the full project lifecycle: capital planning and prioritization, need definition, feasibility and scope development, engineering and AFE justification, procurement and vendor coordination, construction sequencing and field oversight, commissioning, turnover, and post-startup support. Connected operating requirements with technical scope, funding decisions, execution readiness, and the needs of operations and maintenance.

  • Mechanical Contractor

    Supplier Participation

    Vendor Contribution

    Performed the reduction-system mechanical fabrication and installation scope.

  • Controls Integrator

    Supplier Participation

    Vendor Contribution

    Provided reduction-system controls/system design and startup.

Workstream context
Additional technical detail
Explore 1 detail record
  • Planned outage

    4-6 week outage

All portfolio connections
All portfolio connections (25)
Project ownership and delivery context

Owned the full project lifecycle: capital planning and prioritization, need definition, feasibility and scope development, engineering and AFE justification, procurement and vendor coordination, construction sequencing and field oversight, commissioning, turnover, and post-startup support. Connected operating requirements with technical scope, funding decisions, execution readiness, and the needs of operations and maintenance.

Investigated retrofit alternatives and coordinated piping repair, insulation, control valves, RTDs and commissioning. Restoring automated temperature control linked mechanical integrity with process safety and consistent operation, replacing the need to manage temperature through manual steam throttling.

Related analysis and application artifacts
Connected collections

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