Root Cause Analysis

5-Whys the Copilot already drafted for you.

Closed work orders, open RCAs. The Copilot drafts the first-pass 5-Whys from the work order context. A fishbone aggregates every cause across the asset class. Repeat failures stop being invisible.

5-Whys structured entry Copilot drafting Fishbone aggregation Audit trail
dovient.com, RCA · WO #1247

Problem statement

Hydraulic Pump A-2 lost pressure during batch 1442

1

Why did pressure drop?

Internal seal was leaking past its spec.

2

Why was the seal leaking?

Shaft was running 0.03mm above tolerance.

3

Why was the shaft out of tolerance?

Bearing preload was incorrect after the last swap.

4

Why was preload incorrect?

SOP was using old torque spec.

Copilot draft

Suggesting why #5: Why was the SOP still using old torque?

Structured, not freeform.

The 5-Whys form will not save if any entry is missing the question or the answer. That alone stops 80 percent of the lazy 'operator error' RCAs that linger in most systems.

5-Whys

Sequential drill-down with question AND answer per entry. Corrective + preventive actions required before save.

Fishbone (Ishikawa)

Auto-aggregates causes across the asset class. Confidence levels, frequency counts, linked WOs per cause node.

CAPA tracking

Every closed RCA produces corrective and preventive actions with assignees, due dates, and verification sign-off.

Four surfaces that stop repeat failures.

Draft, diagram, track, prevent. Every closed work order feeds the next fix.

Copilot

Drafted from WO #1247 context

Why 1

Pressure dropped because the seal was leaking.

Why 2

Seal wore past tolerance.

Why 3

Bearing preload wrong.

Accept & refine

Copilot RCA draft

WO context in, 5-Whys draft out. Engineer refines in place and saves.

Equipment
Process
People
Material
Method
Environment
Failure

Fishbone diagram

Causes grouped by category. Tap a node to see confidence, frequency, and linked WOs.

Open CAPAs · 12

Update SOP 117 torque spec

M. Rao2d

Retrain shaft-bearing swap

K. Das5d

Verify on next PM

S. Banu14d

Audit torque tools

M. Rao3d
Verify & close

CAPA tracker

Every closed RCA produces CAPAs with assignees, due dates, and verification gates.

Repeat offenders · 90d

Pump A-2

Seal wear

× 3

Chiller C-1

Refrig leak

× 2

Conveyor 3

Belt slip

× 4

Gearbox GX-8

Alignment

× 2

Repeat failure watchlist

Assets with the same root cause twice in 90 days land here for priority intervention.

RCA that actually prevents the next failure.

Not a form-filling exercise. A structured investigation with Copilot help, live aggregation, and a CAPA gate at the end.

5-Whys with enforced Q+A

Every entry requires both a question and an answer. Incomplete investigations cannot save. No more 'operator error' at why number 2.

Copilot drafts the first pass

The Copilot reads the work order, the asset, the issue, and drafts a first-pass 5-Whys. Engineer refines, not writes from scratch.

Fishbone aggregated across fleet

Auto-rolls RCAs into an Ishikawa with confidence levels, frequency counts, and linked work orders per cause node.

Dual-action capture required

Corrective action (immediate fix) AND preventive measure (systemic prevention) are both required before save. No half-solutions.

CAPA verification gate

Every closed RCA produces CAPAs with assignees, due dates, and verification sign-off. Nothing closes without proof.

Repeat failure watchlist

Assets with the same root cause twice in 90 days surface for priority intervention. The dominant failure mode reveals itself.

Bound to work order lifecycle

RCA becomes read-only once the parent WO is closed. Audit trail tracks createdBy, updatedBy, and every field change.

Solution confidence

High / Medium / Low confidence on every saved RCA based on fix history and repeat success. Fishbone nodes colour-code accordingly.

Downtime-triggered RCA

A closed unplanned downtime event prompts a RCA from the production module. No manual handoff.

We had the same seal failure on four different pumps. The fishbone showed it was a torque-spec issue in the SOP, not the seal. One SOP update killed four recurring failures.

Reliability Engineer · Pulp & Paper Mill

-50%

Repeat failures

Dominant cause reveals itself once the fishbone has a quarter of data in it.

3 min

First-draft RCA

Copilot drafts from WO context so the engineer refines, not writes from scratch.

100%

CAPAs verified

Verification gate refuses close until every action is signed off.

Stop solving the same failure twice.

Turn on the fishbone, let the Copilot draft the first pass, and watch the dominant cause reveal itself within a month.