Standards & accreditation

Control of nonconforming work under ISO/IEC 17025: clause 7.10

Clause 7.10 requires a procedure for work that does not conform to the laboratory's own procedures or the customer's requirements. This guide covers the requirements, a six-step workflow and typical assessor findings.

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In short

Clause 7.10 of ISO/IEC 17025:2017 requires a procedure that defines what happens when laboratory activities or results do not conform to the laboratory's own procedures or the agreed customer requirements. It covers responsibilities and authorities, risk-based actions (up to halting work and withholding reports), an evaluation of significance including the impact on earlier results, a decision on acceptability, customer notification and recall of work where necessary, and who authorizes resumption. Actions and outcomes are recorded; if the problem could recur, a corrective action under 8.7 follows.

What counts as nonconforming work?

Nonconforming work is any activity or result that does not meet the laboratory's own procedures or the requirements agreed with the customer: a test item measured outside the required environmental conditions, a result produced with an out-of-calibration instrument, a method version that was not released, or a report with a wrong entry. What matters is not how severe the issue is, but that it is detected, evaluated and recorded.

Do not confuse it with corrective action (8.7), which removes the root cause so the problem does not recur. Clause 7.10 deals with the individual case and its consequences for results and customers.

What clause 7.10 requires

SubclauseRequirement
7.10.1 a)Responsibilities and authorities for managing nonconforming work are defined.
7.10.1 b)Actions are based on the risk levels established by the laboratory, including halting or repeating work and withholding reports.
7.10.1 c)The significance of the nonconforming work is evaluated, including the impact on earlier results.
7.10.1 d)A decision is taken on the acceptability of the nonconforming work.
7.10.1 e)Where necessary, the customer is notified and work already released is recalled.
7.10.1 f)The responsibility for authorizing the resumption of work is defined.
7.10.2Records of nonconforming work and the actions in 7.10.1 b) to f) are retained.
7.10.3If the evaluation indicates the nonconformity could recur or doubts arise about compliance of the management system, corrective action is taken (8.7).

A six-step workflow

  1. 1

    Detect and report

    Anyone in the lab can raise a nonconformity: technician, quality manager, customer or auditor. Record what, when, on which job, sample and instrument it was noticed.

  2. 2

    Take immediate action

    Depending on the risk level, halt the work, withhold reports or repeat the test. The procedure states who may decide this.

  3. 3

    Evaluate significance

    Which results are affected, including earlier ones? If an instrument is found out of tolerance at recalibration, review every result produced with it since its last valid calibration.

  4. 4

    Decide on acceptability

    The work is rejected, repeated, accepted after agreement with the customer, or corrected. Decision and rationale are documented.

  5. 5

    Notify and recall

    If released results are affected, notify the customer and amend or recall the report under 7.8.8. Define who contacts the customer.

  6. 6

    Release and check the cause

    A defined person authorizes resumption. If the issue could recur, open a corrective action; the cases feed into the management review.

Typical assessor findings

  • No procedure exists, or the authority to halt work is not defined.
  • Issues are fixed but not recorded; there is no evidence of evaluation and decision.
  • The impact on earlier results is not checked, for example after an instrument was found out of tolerance.
  • Customers are not notified although released reports are affected.
  • Work resumes without a documented release.
  • Recurring issues do not lead to a corrective action.

Tools and data sources

A register with number, job, finding, risk level, decision, owner and release is enough for the records. The hard part is usually evaluating earlier results: which jobs used the same instrument, method or test bench?

TestLabIQ records deviations per test case and links them to jobs, test items, test benches and measurement data; an audit log shows every change. That speeds up the search for affected results. The application does not provide a dedicated nonconforming-work register with risk levels, customer notification and release workflow; a maintained spreadsheet or your QMS covers that.

Frequently asked questions

What does clause 7.10 of ISO 17025 require?

A procedure for managing nonconforming work: responsibilities, risk-based actions, evaluation of significance including earlier results, a decision on acceptability, customer notification, authorization to resume work and records.

What is the difference between nonconforming work and corrective action?

Clause 7.10 handles the individual case and its consequences. Corrective action under 8.7 removes the root cause so the problem does not recur.

Must the customer always be informed?

Where the evaluation shows that released results are affected, yes. The standard requires notification where necessary and, if applicable, recall of the work.

What if an instrument is found out of tolerance at calibration?

All results produced with it since its last valid calibration are evaluated. Repeat tests, amended reports and customer information may follow.

Who authorizes the resumption of work?

The laboratory defines this in its procedure (7.10.1 f). Typically the quality manager or laboratory head, with a documented release.

Narrow down affected results quickly

TestLabIQ links deviations, jobs, test benches and measurement data so that evaluating earlier results does not stall on searching.

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This guide is editorial orientation and not an interpretation of the standard. Always consult the current standard text and the requirements of your accreditation body.