Manufacturing Record Book (MRB): what goes in a turnover data book.
A Manufacturing Record Book — also called a data book, quality dossier or turnover package — is the compiled documentary evidence that a fabricated or installed scope was built, examined and tested to the contract. On most capital projects it is also the last thing standing between the contractor and final payment, and the first thing to slip. This guide sets out what belongs in an MRB, a reusable index, who signs what, and the rejections that cost weeks at handover.
The MRB is not a filing exercise at the end of the job. Every section corresponds to a hold or witness point already defined in the Inspection and Test Plan, so a book that is difficult to assemble usually means the ITP was never enforced.
Most MRB rejections are structural rather than technical: missing traceability between certificates and physical items, unsigned or uncontrolled documents, open non-conformances, and a format that does not match the contractual index.
- 01Agree the MRB index and format in the first weeks of the contract, not at handover.
- 02Every record must trace to a specific item — heat number, weld number, tag number or serial.
- 03The MRB structure should mirror the ITP; if it does not, evidence will be missing.
- 04All non-conformances must be closed with objective evidence before submission.
- 05Build the book progressively as work completes, and audit a sample at 30% and 70% progress.
What is a Manufacturing Record Book (MRB)?
In capital projects and EPCM programmes, MRB stands for Manufacturing Record Book. It is the compiled documentary evidence that a fabricated or installed scope was built, inspected, tested and released in accordance with the contract.
An MRB links every physical item — weld, valve, pressure part, structural member — to the records that prove its conformity. A reviewer should be able to pick any item in the scope and trace it to its material certificate, welding documentation, non-destructive examination result, pressure test record and as-built drawing in under a minute.
The book is also called a data book, quality dossier or vendor data book. The turnover package is broader: it bundles the MRB with construction, commissioning, punch-list and system-completion records for the operating asset.
MRB, data book, quality plan — what each term actually means
The names are used loosely across projects, which is exactly why contracts disagree about what is owed.
| Document | Purpose | When it exists |
|---|---|---|
| Quality Management Plan / Project Quality Plan | How quality will be managed on this project — organisation, responsibilities, processes, audits | Before work starts |
| Inspection and Test Plan (ITP) | What will be inspected and tested, to which criteria, at which hold and witness points | Before fabrication |
| Quality Control Plan | Often used interchangeably with the ITP, or as the discipline-level control document beneath the quality plan | Before fabrication |
| Manufacturing Record Book (MRB) / Data Book | The compiled evidence that the ITP was executed and the item conforms | Built through fabrication, submitted at completion |
| Turnover package | The MRB plus commissioning, punch list and system completion records for the operating asset | At mechanical completion and handover |
Quality Management Plan vs Quality Control Plan — where the MRB fits
These two documents are routinely confused in contracts, and the confusion shows up later as a dispute over who owed which records. They operate at different levels of the project quality system, and the MRB sits beneath both.
| Quality Management Plan (QMP) | Quality Control Plan (QCP) | |
|---|---|---|
| Level | Project-wide framework | Activity or discipline level |
| Purpose | How quality will be managed — organisation, responsibilities, authority, document control, audits, NCR and corrective-action processes, reporting | How specific work will be controlled — inspection and test activities, acceptance criteria, methods, frequency and records |
| Typical owner | Contractor or EPC quality manager, approved by the owner | Discipline QC lead or fabricator QC, aligned to the QMP |
| When it exists | Before any work starts | Before fabrication or construction of the activity |
| Evidence it produces | Audit reports, management reviews, registers and procedures | Signed inspection and test records — the content that lands in the MRB |
In practice the QCP is often implemented as the Inspection and Test Plan for each activity, or as a discipline-level control document that the ITPs hang off. Terminology varies by contract — some owners use QCP and ITP interchangeably — so the project quality plan should define the terms in its first issue, and every supplier should be working to the same definitions.
The connection to the data book is direct: the MRB index should be traceable back through the ITP to the acceptance criteria in the QCP, which in turn exists because the QMP requires controlled inspection of the work. When a reviewer challenges a record at handover, that chain — QMP to QCP to ITP to MRB entry — is what makes the record defensible.
For owners and EPCs, the practical test is coverage: list the QMP's record requirements, map each one to a QCP or ITP line, and confirm each line has a home in the MRB index. Gaps found at that table cost nothing; gaps found at turnover cost weeks.
Building the plan first?
The project quality plan defines the organisation, document control, NCR workflow and record requirements that the QCP, ITPs and MRB all inherit. Get the framework right before fabrication starts.
Project Quality Management System services
We design and implement PQMS frameworks — quality plans, ITPs, NCR control and turnover documentation — for capital projects and modular fabrication scopes.
A standard MRB index you can reuse
Adapt the section numbering to the contract, but keep the sequence — reviewers read in this order.
Who signs what
Unsigned or wrongly-signed records are treated as no record at all.
Fabricator QC
Compiles the book, signs in-process inspection, dimensional and test records, and certifies traceability of materials to items.
Third-party inspector
Signs the ITP lines designated as witness or hold points, and issues release notes or inspection release certificates that must appear in the book.
Contractor / EPC quality
Reviews the book against the ITP and specification before submission, and owns the transmittal and comment resolution log.
Owner / client representative
Accepts the book, closes any documentation punch list, and links acceptance to the payment or completion milestone.
Where MRB sections come from
Every MRB section should trace to a line in the ITP. If your ITP does not yet define acceptance criteria and sign-off authority per activity, the data book cannot be complete.
Free MRB index template
Download the ten-section turnover data book contents register in Excel or PDF — document number, revision, date, pages, status and location columns, ready to align with your contractual index.
Why data books get rejected at handover
Ranked by how often they appear in review comments, not by severity.
Traceability breaks
A mill certificate exists but nothing links its heat number to the fabricated item. The material may be right; the evidence is not.
Open non-conformances
NCRs submitted without disposition, verification of the repair or the re-inspection result. Any open NCR blocks acceptance.
Uncontrolled or superseded documents
Drawings at the wrong revision, unapproved WPS revisions, or procedures with no revision status shown.
Missing signatures and dates
Records signed by someone with no authority in the quality plan, or witness points with a blank third-party column.
Expired calibration
Gauges and test equipment whose calibration lapsed before the test date, which invalidates every result taken with them.
Wrong format or index
Scanned images instead of searchable PDF, no bookmarks, or a section order that does not match the contractual index.
Late compilation
The book starts at completion, so records from early fabrication cannot be recovered and are recreated retrospectively — which reviewers can spot.
Concessions not carried through
Approved deviations referenced in correspondence but absent from the book, leaving apparent non-conformity on the record.
- Step 01
Approve the index and format early
Index, numbering, file naming, digital format and native-file requirements agreed in writing with the client before fabrication starts.
- Step 02
Build progressively against the ITP
Each ITP line closes with its record filed into the corresponding book section the same week, not at the end of the package.
- Step 03
Audit a sample at 30% and 70%
Pull ten items at random and trace each one end to end. Two short audits mid-fabrication prevent almost every structural rejection.
- Step 04
Close NCRs before submission
Every non-conformance dispositioned, verified and closed with objective evidence, with the closure record filed in the same book.
- Step 05
Pre-submission review
An independent review against the ITP and specification, producing an internal comment sheet resolved before the book reaches the client.
Turnover documentation as part of the project quality system
On EPCM and capital programmes the data book is not a standalone deliverable — it is the output of the project quality management system. Where the PQMS defines the ITPs, hold points, NCR workflow and record requirements at the start, the MRB assembles itself as work completes. Where it does not, turnover becomes an archaeology exercise months after the crews have left.
We build project quality systems that produce a defensible record package as a by-product of execution, and we review or compile data books for fabrication packages where the evidence trail needs rebuilding.
Project Quality Management System
ITPs, hold points, NCR control, quality records and turnover documentation designed for EPCM programmes and modular fabrication scopes.
Questions we get on this topic
What is a Manufacturing Record Book (MRB)?
An MRB is the compiled documentary evidence that a fabricated or installed scope was manufactured, examined and tested in accordance with the purchase order, specification and applicable codes. It typically includes certificates of conformity, material certificates, welding and NDE records, test results, calibration certificates, non-conformance closure evidence and as-built drawings.
What does MRB stand for in manufacturing?
In capital projects, procurement and fabrication contracts, MRB stands for Manufacturing Record Book. In general manufacturing the same acronym can mean Material Review Board, a group that dispositions nonconforming material. The capital-project meaning is the compiled evidence of manufacture, inspection and test.
What is the difference between an MRB and a turnover package?
The MRB covers the manufacture of an item or package — usually a vendor or fabricator deliverable. The turnover package is broader: it bundles the MRBs with construction, commissioning, punch list and system completion records for the operating asset handed to the owner.
What is included in a turnover package?
A turnover package typically includes the MRBs for each fabricated package, construction quality records, completed checklists and test records, NCR closure evidence, punch-list status, pre-commissioning and commissioning records, as-built drawings, operating and maintenance manuals, spare-parts lists and the system completion certificates that transfer care, custody and control to the owner.
What is the difference between a quality management plan and a quality control plan?
The quality management plan sets the project-wide framework — organisation, responsibilities, document control, audits and reporting. The quality control plan is the activity-level document that defines how specific work will be inspected and tested. The MRB is the evidence that the control plan was executed.
What is the difference between a quality management plan and an ITP?
The quality management plan describes how quality will be managed across the project — organisation, responsibilities, processes and audits. The Inspection and Test Plan is the activity-level document that says what will be inspected or tested, against which acceptance criteria, at which hold and witness points, and who signs.
Who is responsible for compiling the MRB?
Normally the fabricator or vendor compiles it, the contractor or EPC quality team reviews it against the ITP and specification before submission, and the owner's representative accepts it. Third-party inspection release notes and witnessed ITP sign-offs are filed within it.
Why do data books get rejected?
Most often for broken traceability between certificates and physical items, open non-conformances, unsigned or superseded documents, expired calibration on test equipment, and a format or index that does not match what the contract requires.
When should MRB compilation start?
At contract award. The index, numbering, file format and native-file requirements should be approved before fabrication begins, and records should be filed as each ITP line closes rather than gathered at completion.
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See past issues →- How to prepare an Inspection and Test Plan (ITP): a step-by-step guideSeven steps to writing an ITP that catches defects, satisfies your client and holds up at handover — hold points, witness points, clause references, done right.
- What is a Non-Conformance Report (NCR)?A plain-English guide to non-conformance reports — what an NCR is, what goes on the form, the lifecycle from detection to closure, the five disposition options, and where the NCR stops and CAPA begins.
- Closing the evidence gap in Project QMSOwner-side project quality lives and dies on the data-book. A field-tested framework for making every ITP line item photo-evidenced, clause-referenced and verifiable at handover.
Turnover documentation slipping?
Send us the package scope and the contractual index — we'll tell you what is missing and what it takes to close the book.