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QSRA software

Quantitative schedule risk analysis your risk team can sign off.

Monte Carlo QSRA with AI-assigned duration uncertainty, a full risk register, pre and post mitigation and risk drivers, all on your live schedule.

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DC Echo QSRA results

1,000 iterations

PLANNED

20 Jul 2027 · 0%

P50

23 Nov 2027

P80

10 Jan 2028

P95

16 Mar 2028

Why teams choose it

Three reasons it earns its place.

A risk workshop’s inputs, in one click.

Our AI proposes three-point estimates for every activity from how similar completed work actually performed. Templates and manual entry are there whenever you want them.

AI QSRA

Results your risk manager will sign off.

Industry-standard Monte Carlo that respects every calendar, constraint, lag and lead, and is continuously tested for accuracy.

Up to 10,000 iterations

Know what drives the date, and what fixes it.

Risk drivers rank every activity and risk event, and pre and post mitigation runs show exactly what each action buys you.

P50 · P80 · P95

Technical specification

Everything a QSRA practitioner checks for.

Method: Monte Carlo simulation with completely random sampling
Iterations: 1 to 10,000, default 1,000
Duration uncertainty: BetaPERT, Triangle or Uniform, set by template, by hand or by AI recommendation
Risk events: Threats and opportunities, single value or uniform probability, single value, uniform, triangle or BetaPERT impact, recurrence, dependent or independent
Mitigation: Mitigated probability and impact per risk event, both scenarios run together
Outputs: Deterministic finish and its probability, P50, P80 and P95, minimum, maximum, mean and median, for the project, any WBS or any activity
Risk drivers: Top 20 activities and risk events for any activity and P-position, as percentages, days or raw correlation
Schedule logic: Activity calendars, constraints consistent with Primavera P6, mandatory constraints at the end of each iteration, lags, leads and cycle handling
Granularity and hierarchy: Days, hours or minutes, by WBS or activity codes
Import and export: Risk profile from a previous update, Excel import and export of inputs and results, chart image export
Risk library and setup: Workspace Global Risk Register applied across projects, mass-assign templates with your own names, settings saved at project level

Duration uncertainty

Three-point estimates, three ways.

Apply your templates, enter values by hand, or let the AI recommend minimum, most likely and maximum durations from how similar completed activities actually performed. Every AI value can be reviewed and overridden.

BetaPERT
Triangle
Uniform
Mass-assign templates
Custom template names
AI recommendations

Assign values

Templates

Manual

AI Run

ACTIVITY

DIST.

MIN

PROB

MAX

SOURCE

C.E.3016

Excavate and blind RC slab

BetaPERT

C.E.3096

Install ducting and floor slab

Triangle

10d

11d

12d

C.E.3210

Erect steel columns

BetaPERT

C.E.3336

Install roofing

Uniform

Manual

Risk register

Threats and opportunities, modeled properly.

Define each risk event with a probability and an impact distribution, mark it as a threat or an opportunity (opportunities show as left-pointing bars in the tornado), set how often it can recur, and choose whether it hits every assigned activity the same way.

Single value or uniform probability
Four impact distributions
Recurrence
Dependent or independent

Risk register

Mitigation on

CODE

EVENT

See what every mitigation buys you.

Add mitigated probability and impact for any risk event. One run produces both scenarios on the same chart, with P50, P80 and P95 side by side.

Pre and post mitigation
One chart
Finish date table

Pre and post mitigation

FINISH

PRE

POST

Planned

20 Jul 2027

P50

23 Nov 2027

18 Nov 2027

P80

10 Jan 2028

11 Jan 2028

P95

16 Mar 2028

Risk drivers

Know exactly what’s driving your P80.

For any activity and any P-position, see the top 20 drivers, split into duration uncertainty and risk events. Switch between percentages, days and raw correlation, and compare with your previous update or your mitigation scenario.

Top 20 drivers
Any P-position
Project-wide drivers
Excel export

Risk drivers · Handover, P80

Days

Raw

Duration uncertainty, P.B.1010

44%

300-MATS Supply chain

27%

200-UTIL Utility relocation

25%

Duration uncertainty, E.G.2410

21%

100-PERM Permitting delays

12%

000-EARLY Early access

-5%

In days: a 37.5% driver on a 200-day P80 delay is 75 days.

Modeling fidelity

Built to respect your schedule logic.

Results are only as good as the logic underneath. Every calendar, constraint, lag and lead is honored, so the risk profile reflects the schedule your team actually built.

Calendars
Constraints
Lags and leads
Cycle handling

Calendars

Every activity runs on its own business calendar, including float and lag calculations.

Constraints

Applied consistently with Primavera P6. Mandatory constraints apply at the end of each iteration.

Lags and leads

Positive, zero or negative, on the calendar defined in your schedule data.

Cycles

Ordered by scheduled start so the simulation runs, and flagged so you can fix them.

Workflow

Fits the way your risk team already works.

Work in days, hours or minutes, switch between WBS and activity codes, carry your risk profile forward from the last update, and move inputs and results in and out of Excel.

Import from previous update
Excel in and out
P5, P50, P80, P95 exports

Fits how your team works

Time granularity

Days

Hours

Minutes

Hierarchy

WBS

Activity codes

Import

Previous update

Excel

Export

Excel

Chart image

Compare drivers

Previous update

Mitigation

Risk governance

One corporate risk library, every project.

Define your standard risk events once at workspace level, import them from Excel, and apply them to any project. Each event shows exactly which projects it’s applied to, so risk governance is visible across the whole portfolio.

Workspace risk library
Excel import and export
Applied-to tracking

Global Risk Register

Import

Export

Apply to projects

CODE

RISK EVENT

Put it to work

Risk and forecasting use case

All ground truth models

Industrial energy plant story

FAQ

Questions, answered.

Technical questions about QSRA.

Talk to our team

What method does the QSRA use?

Monte Carlo simulation with completely random sampling. You set the number of iterations from 1 to 10,000, with 1,000 as the default.

Which distributions are supported?

BetaPERT, Triangle and Uniform for duration uncertainty. Risk event probability can be a single value or uniform, and impact can be a single value, uniform, triangle or BetaPERT.

How does the AI set duration uncertainty?

It recommends minimum, most likely and maximum values for each activity based on how similar completed activities have actually performed. You can accept, adjust or override every value.

How are calendars, constraints and lags handled?

Every activity is modeled on its own business calendar, constraints are applied consistently with Primavera P6, and mandatory constraints are applied at the end of each iteration. Lags use the calendar defined in your schedule data.

What happens if the schedule has cycles?

Activities in a cycle are ordered by their scheduled start so the simulation can run, and the cycle is flagged so you can fix it.

Can we work in Excel?

Yes. Import duration uncertainty and risk assignments from Excel, and export them along with P5, P50, P80 and P95 results for every activity.