Phased Construction on Occupied Industrial Sites in Wyoming

A refinery turnaround does not wait for a contractor to be ready. The same is true for a trona plant, a power station or a distribution center that ships every day. Building inside an operating site means working around people, equipment and schedules that you do not control, and doing it without making anyone's day worse.

Wyoming has a lot of this work. The Sinclair refinery sits just east of the town of Sinclair and remains in use. Another refinery operates at Evansville near Casper. The Laramie River Station in Platte County is a 1,710 MW plant with about 300 workers. Sweetwater County has four trona mines. These are sites where a new pad, a new building or a rebuilt road must fit between shifts and outages.

We plan this kind of work as a sequence of small, safe moves, each with its own access, its own barrier and its own turnover.

Safety Orientation and Work Zones

Every worker attends the owner's safety orientation before entering. We agree on work zones, barricades, escort rules and hot-work permits at the start and review them at each phase. Lockout and tagout belong to the owner's operations team, and we follow their procedures exactly. Our own daily plan covers lifting, trenching, traffic and weather.

New people arrive over the life of a phase, so orientation does not end on the first day. We brief every new crew member on the zone rules before they start, post the rules at the gate and ask foremen to correct drift the same shift it happens. When a rule is unclear, the answer comes from the owner's safety lead, and we write it down.

We keep construction traffic separate from plant traffic. Dedicated gates and haul routes, spotters at crossings and speed limits that match the site. Dust and noise are limited. If the plant has a muster point or alarm system, we put it on every person's badge or card and drill it on day one.

How a Phase Gets Built

We divide the work into phases that match the owner's operations: shift patterns, shutdown windows, product changes and weather. For each phase we write a short method statement covering access, equipment, tie-in points, risks and the turnover condition. Operations signs off before we start.

Tie-ins are planned like surgery. We pre-build as much as possible off line, test it, and stage materials near the tie-in so the live work takes hours, not days. If a shutdown window is fixed, we rehearse the critical steps. Our commissioning and closeout checklist lets operations accept each phase with clear documentation.

Phase plans also name what happens when the plan fails. If a tie-in cannot be completed in its window, there is a backout step that leaves the system as it was, tested and safe. That discipline matters most when the unit being tied into feeds a refinery or a process line that runs around the clock.

Working Around Outages and Seasons

Outage dates drive everything. A turnaround, a scheduled mine shutdown or a seasonal low in production gives a window that may come once a year. We back-schedule from that window: design freeze, procurement, prefabrication, mobilization and a daily plan for the outage itself.

Weather adds to the pressure. In Rock Springs, where trona employment was 2,296 workers in 2025 across the four mines in Sweetwater County, winters are cold and snowy and the site is at 6,388 feet. Cold slows cure times, wind stops lifts and ice closes ramps. We keep float for it and a heated enclosure plan for critical pours.

Protecting Operations

The question we ask first is what must not stop. Power, process water, air, fire protection, access for emergency vehicles, truck loading. We map those and design the work so they stay on. Where a temporary interruption is unavoidable, we agree on duration, notice and a contingency plan.

Existing conditions are rarely what the drawings show. We survey and potholing before excavation, and we treat every unmarked pipe as live. For work near demolition and slab replacement, we control dust, vibration and debris so we do not damage equipment next door.

We also look after the people on the receiving end. Operators often do not know a pour or a lift is coming. We post short notices, give the control room a heads-up before heavy work and agree on a call sign for stopping work. A small courtesy keeps a long job running smoothly.

Crews on the Ground

We aim to keep the people who do the work consistent across phases, so they learn the site rules, the operators and the hazards. Concrete, earthwork, steel and site utilities are the trades that show up most in live-site jobs, and crews experienced with them make fewer mistakes under pressure.

We also bring a clean site habit. Daily housekeeping, materials in designated areas, and no work left open at shift change. Operations staff should see a tidy area and a clear plan whenever they walk through.

What Costs More on a Live Site

Phased work costs more than the same work on an empty site. There is stand-by time, repeated mobilization, extra protection, restricted lifts and smaller work fronts. We show these costs plainly in the estimate so you can compare them with the cost of shutting down.

Often the least expensive plan is not the fewest phases. Splitting a job into more steps can cut the risk of a plant upset, which is far more expensive than extra setup. We help you test those options. Our industrial renovations and modernization team can model each option for owners in utilities and power and process industries.

Plan the Phases With Us

Tell us what must keep running and what must change. We will draft the phases, the access plan and the outage schedule with your team. Call or use the quote form.

Common Questions

Can you work during an operating shift?

Yes, if the area is isolated, the hazards are controlled and operations agrees. Some work, such as heavy lifts or tie-ins, is better done during outages or off-shift hours. We decide with your operations team.

How do you coordinate with our maintenance crews?

We attend your planning meetings, share a two-week look-ahead and give a single point of contact for daily changes. If your crew needs access to an area we are using, we plan a handoff in advance.

What if we discover unexpected conditions mid-phase?

We stop, make the area safe and notify you. Then we review the condition, the options and the cost or schedule effect. Concealed piping, old foundations and contaminated soil are the usual surprises.

How are phases turned over?

Each phase ends with a walk-through, a punch list and the required test records. Operations signs the turnover. We do not start the next phase until the previous one is accepted.

Do you work around refineries and power stations?

Yes. Sites like the refinery at Sinclair or the generating station near Wheatland each have their own access, permit and safety rules. We learn them before mobilizing and we keep our trade partners on the same plan from phase to phase.