13.4 Quality Documentation, Reference Standards & Document Control

The Documentation Hierarchy

Quality documentation is conventionally described as a four-level pyramid, and although ISO 9001:2015 no longer prescribes this structure, the vocabulary is universal and the exam uses it.

ISO 9001:2015 replaced the older "documents and records" vocabulary with the single term documented information, and it no longer requires a quality manual or the six mandatory documented procedures that the 2008 edition demanded. Organizations retain whatever documented information is needed for the effective operation of their processes, plus the specific items the standard still names. Many organizations kept their manual anyway because customers ask for it. This is a currency point that generates exam questions.

Documents Versus Records

The consequence for an inspector: an obsolete document in use is a serious finding because it means work is being performed to the wrong requirement. An altered record is a more serious finding still, because it destroys the evidence the entire system rests on.

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Document Control

Document control, addressed in ISO 9001:2015 clause 7.5.3, exists to answer one question: is the person doing the work using the correct, current requirement?

Its required elements:

• Approval before issue by an authorized person.
• Review and re-approval when documents are updated.
• Identification of changes and of current revision status — typically a revision letter or number plus a revision history block, and often a change bar or description of what changed.
• Availability at the point of use, in a usable form.
• Legibility and protection from loss of integrity, including control of electronic access.
• Control of external documents — customer drawings, industry standards, supplier manuals — which the organization does not author but must ensure are current.
• Prevention of unintended use of obsolete documents. Obsolete documents are removed from all points of use; any copy retained for legal or knowledge reasons is conspicuously marked as obsolete.
• Retention and disposition per contract and regulation.

The Inspector's Revision Rule

The single most common documentation nonconformance found in inspection departments is inspecting to the wrong revision. Before measuring anything, verify that:

1. The drawing revision matches the revision called out on the traveler, work order, or purchase order.
2. The specification revisions referenced by the drawing are the ones in the shop's controlled set.
3. The inspection plan or control plan is at the revision that corresponds to that drawing.
4. Any customer-supplied document in use is the copy issued through document control, not a printout emailed to someone.

A rejection written against a superseded revision is an expensive, avoidable, and entirely visible error, and so is an acceptance written against one.

Uncontrolled copies are the recurring practical trap. A drawing printed at a workstation "for reference" is not maintained when the revision changes. Controlled distribution, watermarking, print-on-demand from the controlled system, or simply working from a screen connected to the live system are the standard countermeasures.

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Good Documentation Practices

Records must be trustworthy years after they are written. The practices below are known as good documentation practices and are summarized by the ALCOA attributes: Attributable, Legible, Contemporaneous, Original, and Accurate. The extended form, ALCOA+, adds Complete, Consistent, Enduring, and Available.

Rules for making an entry:

• Record at the time the activity occurs, not from memory at the end of the shift.
• Use permanent ink; never pencil.
• Complete every field. Use "N/A" or a single diagonal line for fields that do not apply, so that a blank never becomes an unanswered question.
• Sign or initial and date entries as required, using the individual's own credential — never someone else's stamp or login.
• Record the actual observed value, including values outside the tolerance. A record showing only conforming values invites the flinching finding described in section 9.4.

Rules for correcting an error:

• Draw a single line through the incorrect entry so the original remains legible.
• Write the correct value adjacent to it.
• Add the initials and date of the person making the correction.
• Add a reason for the change where required by procedure or regulation.
• Never obliterate, erase, use correction fluid, write over, or remove and replace a page.

Prohibited practices: back-dating, pre-signing a form for work not yet performed, recording expected values rather than observed ones, and using another person's stamp or electronic credential. Each is a records-integrity failure rather than an ordinary error, and in regulated sectors each is a serious regulatory finding.

For electronic records the same principles apply through system design: attributable individual logins, a time-stamped and non-editable audit trail that captures the old value, the new value, who changed it, when, and why, and the retention of the original as well as the corrected entry. In FDA-regulated environments these controls fall under 21 CFR Part 11.

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Key Inspection Documents

PPAP in Slightly More Detail

The AIAG Production Part Approval Process requires 18 elements, including the design record, engineering change documents, customer approvals, design and process FMEAs, the process flow diagram, the control plan, measurement system analysis studies, dimensional results, material and performance test results, initial process studies, qualified laboratory documentation, an appearance approval report where applicable, sample product, master sample, checking aids, customer-specific requirements, and the Part Submission Warrant (PSW) that summarizes and certifies the submission.

Submission is governed by five levels defining how much of the package is actually sent to the customer versus retained at the supplier, with Level 3 as the default: warrant plus product samples plus complete supporting data. Level 1 is warrant only; Level 5 is review at the supplier's location.

The inspector's stake in PPAP is direct: the dimensional results, MSA studies, and initial process studies are all inspection department outputs, and an error in them delays part approval.

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Reference Documents and Standards Bodies

Body of Knowledge topic IV.F.2 requires you to identify and use national and international standards and customer requirements as authorities supporting quality processes.

The distinction the exam most reliably tests is NIST versus the standards developers. ISO, ANSI, ASTM, and ASME publish written specifications and test methods. NIST realizes and maintains the physical measurement standards and provides the traceability chain described in section 5.2. A calibration certificate is "traceable to NIST"; a sampling plan is "per ANSI/ASQ Z1.4."

Customer Requirements as an Authority

The customer's contract, purchase order, drawing, and specifications are requirements with the same force as any standard, and in most contracts they take precedence over general industry practice. Practical rules:

• Flow-down. Customer requirements flow down to sub-tier suppliers. If the customer requires heat-lot traceability, the shop must impose it on its own material suppliers.
• Order of precedence. Contracts commonly state a hierarchy — typically contract, then purchase order, then drawing, then referenced specifications. Read the clause; do not assume it.
• Conflicts are escalated, never resolved on the floor. When a drawing and a referenced specification disagree, or a purchase order calls out a revision the drawing does not, the inspector stops and obtains written clarification. Choosing the interpretation that lets the part pass is a nonconformance in itself, and a verbal approval that never reaches the record is worth nothing during an audit.
• Customer-specific requirements frequently override or supplement general standards — special characteristic symbols, mandated sample sizes, prescribed reporting formats, and required notification before process changes.

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Retention

Retention periods are set by contract, regulation, and the organization's own policy, and they are frequently longer than people assume — commonly the life of the product plus a defined number of years in aerospace, medical, and defense work. Retention obligations cover retrievability and readability, not just storage: archived electronic data that no current system can open has not been retained in any meaningful sense.

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Common Exam Traps

• ISO 9001:2015 does not require a quality manual or the 2008 edition's six mandatory procedures.
• Documents are revised; records are corrected. A record is never rewritten.
• Single line through, initial, and date. Never erase, obliterate, use correction fluid, or replace a page.
• Obsolete documents are removed, and any retained copy is conspicuously marked.
• Verify the revision first. Inspecting to a superseded drawing invalidates the result whether the part passes or fails.
• NIST provides traceability, it does not write GD&T or sampling standards.
• QS-9000 is historical, superseded by ISO/TS 16949 and then IATF 16949.
• PPAP defaults to Level 3 and has 18 elements summarized by the Part Submission Warrant.
• Specification conflicts are escalated in writing, never resolved by the inspector.
• N/A rather than blank. A blank field cannot be distinguished from an omission.