OverrunShield
Browser-based Primavera P6 schedule checks and contract tools for project controls teams.
Browser-based Primavera P6 schedule checks and contract tools for project controls teams.
This page is designed to help you find out whether OverrunShield is good and if it is the right choice for you.
OverrunShield is a set of browser-based tools for planners, schedulers and project controls staff on construction and infrastructure projects. Upload a Primavera P6 XML or XER file to run a DCMA 14-point and EVM check, open the file without P6, compare a baseline with an update, or rate two to five schedules side by side. Other tools build a P6 schedule, work out earned value, forecast a bid's cash flow, keep a FIDIC, NEC or JCT time-bar register, write a delay notice, price prolongation and lay out an extension of time submission. The free tools need no card and no account; some ask you to confirm your email with a 6-digit code before an upload or download. Paid exports and reports are one-time payments, from $19. The automated checks are a first pass, not a certified expert review.
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P6 schedule health check
DCMA 14-point and EVM check of a Primavera P6 XML or XER file in the browser
P6 file viewer and comparison
Open a P6 file without P6; compare a baseline with an update; rate 2 to 5 schedules side by side
Contract and claims tools
FIDIC, NEC or JCT time-bar register, delay notice, prolongation cost and extension of time submission
It is built for project controls work, not general project management. You upload a Primavera P6 XML or XER file and get a DCMA 14-point and earned value check, a baseline-versus-update comparison, or a side-by-side rating of two to five schedules, in the browser, without P6. Contract tools sit alongside: a FIDIC, NEC or JCT time-bar register, delay notices, prolongation cost and extension of time submissions.
The free tools need no card and no account, and paid exports and reports are one-time payments from $19 rather than a subscription. It is aimed at the quick health check a planner needs before a monthly report or a claim, without buying a full enterprise licence. The checks are automated: a first pass, not a certified expert review.
Project controls managers, senior schedulers, planning engineers and project directors on medium to large construction and infrastructure projects. That covers contractors preparing extension of time claims and owners, PMCs and consultants who need an objective check of a contractor's schedule.
It was started by a project controls manager with more than 20 years on infrastructure and engineering projects. Again and again, delay claims were submitted late or built by hand on weak evidence, and a simple schedule health check meant hours in P6 or an expensive consultant. OverrunShield turns those routine checks into browser tools that any planner can run.
WordPress for the site; JavaScript tools that read P6 XML and XER files in the browser; a Python analysis service for the heavier reports; n8n for email and report delivery.
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