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V3 / Value — Commissioning

What Donnelly sees, every witness day.

The commissioning authority — independent of the contractor, retained by the client — sees a single chain of custody from the manufacturer's factory acceptance test, through delivery, through pre-commissioning, through site witness, through client acceptance. Nothing slips between the gaps because the gaps are wired. One record. One signed sequence. One indemnity.

A commissioning engineer in a data hall standing beside a rack of switchgear, ruggedised tablet showing test-witness sign-off in progress.
Cranebank · Hall 2 · Floor 2 · Pod B · UPS witness day · Sentinel CxA

The day before · the day with

The day before Loadbearer

  • The witness sheet is a Word document on the CxA's laptop, copied from the last hall, with the client's name half-changed.
  • FAT certificates from the manufacturer arrive as PDFs by email; SAT records are scanned into a folder; nobody can produce the unbroken chain in under two hours.
  • Witness sign-offs are wet-signed on paper and lost in transit between Hall 2 and the site office.
  • "Did we witness the IST on UPS-04?" is answered by phoning the engineer who was on shift that Saturday.
  • An impartiality query from the client's QA team takes a week to assemble, with chains of email between three companies.
  • Snags raised at the witness moment go on a paper sheet, get retyped on Monday, and 18% of them are lost.
  • The integrated system test (IST) is held up because cooling commissioning slipped — the conflict was visible 21 days ago, and missed.

The day with Loadbearer

  • The witness sheet is generated from the equipment record — the right serial number, the right test sequence, the right client acceptance criteria, no copy-paste.
  • FAT, delivery, SAT and IST records are linked at source. The chain of custody is one query, answered in a second.
  • Witness sign-off is a tap. The chain is timestamped, geotagged, and immutable. The CxA's signature is on the record at the moment of witness, not three weeks later.
  • "Did we witness the IST on UPS-04?" — yes, on 14 March at 11:08, by Donnelly, with snag S-114 raised and closed at 14:30 the next day.
  • An impartiality query is one filtered export. The CxA's chain is independent of Marauder's chain, and visibly so.
  • Snags raised at the witness moment are routed instantly to the responsible package, with a target close-out date driven by the IST gate.
  • Cooling-to-electrical witness conflicts surface on the dashboard 28 days ahead. The IST gate is held only when something genuinely new fails.

At your fingertips, every witness day

The chain of custody, on one screen, defensible to the client.

Equipment witnessed 128 / 162 79% complete · IST gate 11 May 2026 Every UPS, switchgear, CRAC unit, fire suppression head, leak detection node and BMS controller indexed against its FAT, SAT, witness, and acceptance status. Live, by package, by hall.
Snags · open 37 Owned · dated · IST-blocking flagged 14 of these block the IST gate. Each tied to a specific test instance, a specific operator, and a specific re-test slot in the witness diary. No floating snags.
FAT-to-SAT delta 2.1% Average tolerance variance · all packages Where a SAT result drifts more than the tolerance from the FAT, the system surfaces it before the witness signs. Donnelly decides whether to accept, reject, or re-test — never blind.
Witness diary 11 Days locked · 14 days ahead Cross-package conflicts surfaced and resolved before the diary is locked. The cooling-to-electrical clash that lost 31 days last hall is now visible 28 days ahead.
Impartiality chain 100% CxA records segregated · client-facing The CxA's record is independent of the contractor's record, and the client can prove it. No shared edit rights on witness outcomes. No reliance on the contractor's snag list to evidence client acceptance.
Acceptance gates 4 / 7 Achieved · evidence packs ready Pre-commissioning, point-to-point, integrated systems test, level 4, level 5. Each gate has a one-click evidence pack — every test, every result, every witness, every sign-off.

Lessons learned · forensic, not decorative

A clean witness day is the product of stats, not heroics.

  • C-006

    Snags raised verbally and retyped on Monday lose 18% of detail against snags captured at the witness moment with a photo and a tagged location.

    Witness moment = capture moment. Voice, photo, tag, sign, route. The snag exists at the time it was found, with the evidence at the time it was found.

  • C-011

    FAT-to-SAT tolerance drift over 3% on cooling equipment correlates 0.71 with downstream IST failure within 90 days.

    Every drift over 3% is now flagged at the SAT, not at the IST. Donnelly chooses: re-test, accept-with-derogation, or escalate. The drift is on the record either way.

  • C-018

    Witness diary clashes between cooling and electrical packages cost 31 days of programme on the last hall — every clash visible 21 days in advance.

    Cross-package conflicts surface 28 days ahead with named owners. The CxA holds an independent veto on the diary; the contractor cannot self-resolve a clash by silently moving the witness.

  • C-022

    Wet-signed witness sheets in transit between hall and site office had a 9% loss rate across two halls — every loss caused a re-witness.

    Witnessing is signed at the equipment, on a ruggedised device, in the moment. The signed record is in the chain before the engineer steps off the rack platform. Re-witness rate on Hall 2: 0.4%.

What stops happening

  • The Word-document witness sheet copied from the last hall with the wrong client's name.
  • The 14:00 phone call asking whether UPS-04 was witnessed on Saturday.
  • FAT and SAT records that live in two different inboxes and never get tied together.
  • Snags raised verbally that are retyped on Monday with 18% of the detail lost.
  • The witness diary clash that nobody saw 21 days in advance.
  • Wet-signed sheets lost between Hall 2 and the site office.
  • Impartiality queries that take a week to assemble across three companies.

The signed loop

Independence is the product. The system protects it.

A commissioning authority is impartial only if the record is impartial. Loadbearer enforces that the CxA's record is structurally independent of the contractor's — separate sign-off rights, separate witness register, exportable on its own. The contractor cannot edit a witness outcome. The system cannot accept a test for the client. Donnelly reads, judges, signs. That signature is the line.

AI never decides. The CxA does. Principle 4. Principle 7.

"What I sign for, I have to defend in court if it comes to it. Now what I sign for is what the record actually says."

— Donnelly · CxA · Sentinel (independent commissioning) (fictional)

Adjacent

The chain reaches the PM, the safety lead and the client.

The CxA's record drives the IST gate on the PM dashboard, the permit picture for the safety lead, and the acceptance status the CIO sees without asking. One record, four authorised views, no reconciliation.