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Client organization: Illustrative Energy Operator (synthetic)Facility: Northern Processing Facility
EVALUATIONOperating mode: evaluation. Content is synthetic and output is not authoritative.

Synthetic demonstration case. All values below are fixture data and do not represent a real client, asset or record.

CASE-OG-001

Synthetic demo case

Integrity safeguard verification — proposed control change

v2 of 2Current

Client organization

Illustrative Energy Operator (synthetic)

Facility

Northern Processing Facility

Industry

Oil & Gas

Status

Under verification

Priority

High

Owner

Asset Integrity Manager

Created

2026-04-02 08:20 UTC

Last updated

2026-04-16 14:06 UTC

Current draft preview

v2 of 2 · draft preview during verification

Case lifecycle

Case summary

What is being evaluated

Plain-language summary of the current position.

A proposed operating and control change requires verification that the existing integrity safeguard remains adequate before the change may proceed.

Why the case exists

A change request was raised against a safeguarded process line and cannot proceed without a documented verification position.

Current operational question

Does the existing safeguard remain adequate under the proposed change?

Verified supporting evidence

Maintenance record EV-OG-2198, drawing revision EV-OG-2190 and procedure extract EV-OG-2187 are verified and current.

Outstanding verification constraints

Inspection record EV-OG-2201 is unverified, and function test result EV-OG-2205 is provisional pending countersignature.

Evidence

Evidence register for this case

Static fixture records. Counts are simple totals of the fixture rows.

Verified3Provisional1Unverified / Unresolved1Expired1Synthetic / Demo11 unresolved · 1 provisional
Evidence items registered against this case
ReferenceTitleStatusDetail
EV-OG-2201Safeguard device external inspectionUnverified — Not yet verified
EV-OG-2198Scheduled safeguard maintenance completionVerified — Verified evidence
EV-OG-2190Process safeguard arrangement drawing, revision CVerified — Verified evidence
EV-OG-2187Operating procedure extract — safeguard isolation stepsVerified — Verified evidence
EV-OG-2205Function test result — safeguard actuationProvisional — Provisional — preliminary only
EV-OG-2143Previous safeguard adequacy verification noteExpired — Verification lapsed
EV-OG-2207Illustrative supporting image referenceSynthetic / Demo — Synthetic demonstration data — not production evidence
Approval readiness is held by 1 unverified item and 1 provisional item. 1 expired item is retained for traceability only and requires no remediation.

Selected evidence

Safeguard device external inspection

Unverified — Not yet verified

Reference

EV-OG-2201

Evidence type

Inspection report

Provenance / source

Field inspection intake (synthetic)

Captured

2026-04-14 10:12 UTC

Validity

Validity pending verification

Linked recommendation

v2

Latest external inspection record, received on 2026-04-14 after the change request. Verification of the submitting source has not been completed, so this item is not available as verified support.

Structured verification finding

Advisory — not an authorized decision

Evidence-bound finding produced for review by an accountable human approver.

The available evidence supports continuation of the current safeguard, but the proposed change should not proceed until the unverified inspection record is verified and the provisional test result is confirmed.

Verified supporting evidence

EV-OG-2198, EV-OG-2190, EV-OG-2187

Outstanding verification constraints

EV-OG-2201 (unverified), EV-OG-2205 (provisional)

Excluded or traceability-only material

EV-OG-2143 (expired, traceability only), EV-OG-2207 (synthetic demonstration)

This finding is advisory support only and does not constitute an authorized decision. EV-OG-2143 expired before this case was created and is retained for traceability only; no remediation of that item is required.

Narrative summary

Plain-language summary

AI-assisted wording of the evidence-bound finding. No new evidence is added.

Three records are verified and support the current safeguard. One inspection record still needs verification and one test result is still provisional, so the case stays open and the proposed change is held.

Draft preview

Maintain the existing safeguard and pause the proposed change

Draft preview generated during verification. The formal recommendation stage has not begun.

v2 of 2Current

Maintain the existing safeguard and pause the proposed change until the outstanding inspection evidence is verified and the provisional test result is confirmed.

State

Draft preview v2 of 2 · not submitted, not approved

Lifecycle stage

Verification

Last revised

2026-04-16 14:05 UTC

Formal recommendation stage

Not started. A draft preview during verification is not a formal recommendation.

Evidence binding

Verified support: EV-OG-2198, EV-OG-2190, EV-OG-2187. Outstanding constraints: EV-OG-2201 unverified, EV-OG-2205 provisional. Excluded: EV-OG-2207 synthetic; EV-OG-2143 traceability only.

Reason for revision

The evidence basis changed after an unverified inspection record was received and a provisional test result was recorded.

Prior versions remain traceable and are never overwritten.

Approval readiness

Blocked

Accountable approver role

Asset Integrity Authority

Individual approver

Not assigned

Reason Approval is blocked because one inspection record (EV-OG-2201) remains unverified and one function test result (EV-OG-2205) remains provisional pending countersignature. Readiness state: not ready for approval.

Approval justification will be recorded by the accountable approver once approval readiness requirements are satisfied.

Presentation only. No approval can be recorded from this screen.

Financial impact

Verification value statement

Illustrative economic impact derived only from the transparent assumptions below.

Illustrative

Verification in progress (1 unresolved · 1 provisional · 1 expired evidence) — financial value remains illustrative until the evidence basis is complete.

Estimated net verification value (USD)

$69,600

Estimated net ROI (illustrative)

387%

Estimated return multiple (illustrative)

3.9× net return on DARQEVON case cost

  • Review effort released$17,400
  • Avoided-cost assumption$45,000
  • Attributable risk reduction$25,200
  • DARQEVON case costdeduction$18,000

The estimated net verification value shown above is the transparent result of the four contributors listed: review effort released, the avoided-cost assumption and attributable risk reduction, less the DARQEVON case cost.

Evaluation inputs are temporary and reset when the page is reloaded. Illustrative financial values communicate potential economic impact. They do not alter verification, evidence status, recommendation or approval. A licensed financial claim requires client-supported assumptions and appropriate human approval.

DARQEVON provides evidence-bound verification support. Consequential decisions require recorded approval by an authorized, qualified human.