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Cross-country pipeline construction is planned in “spreads” — stringing, welding, trenching & lower-in, backfill & reinstatement — each following the one ahead of it down the full length of the route. Over 100+ kilometres, environmental and seasonal constraints at specific crossings make this one of the clearest cases for time-location scheduling in any sector.
Why pipeline programmes need time-location scheduling
A river or wetland crossing on a pipeline route often carries a hard environmental work window — construction permitted only outside a fish-spawning or bird-nesting season, for example. That constraint applies to a specific chainage, not a specific week of the whole project. A time-location chart shows exactly which spread’s line passes through that chainage, and when — turning a permit condition buried in an environmental management plan into something visible on the schedule itself.
What the chart above shows
Four spreads — stringing, welding, trenching & lower-in, and backfill & reinstatement — progress down a 120 km route at their own realistic rates, each starting once the spread ahead has cleared enough chainage. A shaded band marks an environmental work window at a river crossing around chainage 58–64 km: any spread’s line entering that band outside the permitted period is an instant, visible planning problem rather than something discovered on site.
Typical constraints TILOS helps you plan around
- Environmental and seasonal work windows at watercourse or protected-habitat crossings
- Right-of-way and land access agreements that apply to specific chainage sections
- Multiple contractor spreads working the same route at different rates
- Tie-ins and interfaces with existing pipeline infrastructure at fixed chainage points
Who uses this
- Planners coordinating multiple spreads along the same route
- Project managers reporting progress against permit and consent deadlines
- Contracts managers evidencing environmental-window-related delay
- Risk managers tracking exposure at fixed environmental or land-access constraints
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