PECB ISO/IEC 17025 Lead Implementer study materials
PECB ISO/IEC 17025 Lead Implementer study resources

Impartiality Under Pressure at a Steel Group's Testing Laboratory

PECB ISO/IEC 17025 Lead Implementer · Put your knowledge to work in context.

All case studies

Impartiality Under Pressure at a Steel Group's Testing Laboratory

SteelTest is a 14-person mechanical and chemical testing laboratory owned by a steel manufacturer. About 55% of its workload is testing the parent company's heats against customer specifications; the remainder is third-party work for eight external clients. The laboratory manager reports to the group Operations Director, whose annual bonus is tied to on-time shipment. Last month a Charpy impact test on heat H-2277 returned 27 J against a 40 J minimum in the customer specification. The production manager telephoned the laboratory manager asking her to re-test a re-tempered sample and hold the first report until we see how it goes. The quality manager is also the only authorized signatory for impact testing and is the brother-in-law of the owner of the company that calibrates the impact tester. The impartiality risk assessment was last reviewed 22 months ago and lists only no external consultancy as a control.

1. Identify every risk to impartiality in this setup, state whether each can be eliminated or only minimized, and specify the control you would implement, with the clause basis for each.

Read the worked answer

1. Reporting line to the Operations Director, bonus-linked to shipment. This is commercial pressure under 4.1.3. It cannot be eliminated while the line exists, so minimize it: a documented reporting line to group quality or the board for laboratory results, written confirmation that no manager may override a result, and removal of any results-linked element from laboratory remuneration.

2. 55% of work is internal. Not prohibited by ISO/IEC 17025 and not a nonconformity in itself. Minimize through transparency (customer notification where relevant) and monitoring of internal versus external findings.

3. Quality manager/signatory whose relative owns the calibration supplier. 4.1.4 requires ongoing identification and 4.1.5 requires elimination or minimization. Cleanest control is to change supplier (eliminate); if not possible, add an independent technical review of the impact tester's calibration and verification data and disclose the relationship in the impartiality record.

4. Single signatory for impact testing. A control-concentration weakness rather than a pure 4.1 issue; authorize a second signatory so no one person can hold a result.

5. Risk assessment 22 months old. 4.1.4 requires identification on an ongoing basis; review at defined intervals and on change (new client, new staff, new ownership).

Every risk needs a record of the action taken and a review date, because 4.1.5 is demonstrated by evidence, not by intent.

2. The production manager's request arrives by telephone to the laboratory manager. Describe step by step how the laboratory should handle it, what must be recorded, what must be reported to the external customer, and the accreditation consequences of withholding the 27 J result.

Read the worked answer

Immediate handling. Do not agree on the call. Ask for the request in writing and state that the decision is not the production manager's to make. Log the call, date, time and content in the impartiality file and the technical record.

Status of the 27 J result. It is a valid technical record under 7.5 and cannot be deleted, overwritten or replaced. A re-test of a re-tempered sample is a new item with its own record and report; it does not supersede the original unless the original test itself was nonconforming.

If the lab believes the first test was invalid (machine fault, wrong specimen orientation, procedural error), it must invoke 7.10: stop, evaluate significance, notify the customer, and if a report was already issued, reissue under the amendment rules of 7.8, clearly identified as an amendment with the reason.

What the external customer receives. The steel purchaser buying heat H-2277 is entitled to the result of the material as tested. Withholding it and issuing only a later favourable value misrepresents the product.

Accreditation consequence. Suppressing a result is a data-integrity failure, not an administrative slip. It attacks the foundation of 4.1.3 and 7.8, would normally be raised as a serious finding, and can lead an accreditation body to suspend or withdraw the affected scope. The defence at assessment is the record showing the request was refused, escalated and reported.

3. The laboratory argues that because its structure is legal and every employee signs an annual impartiality and confidentiality declaration, clause 4.1 is satisfied. Evaluate this position and describe what top management must additionally do and what evidence an assessor will look for.

Read the worked answer

The position is not defensible. Signed declarations are one control among several; they are evidence of awareness, not of a structure that actually safeguards impartiality.

Clause 4.1.2 requires top management to demonstrate commitment, which is shown through decisions and resources, not signatures. Clause 4.1.3 requires that the laboratory not allow commercial, financial or other pressures to compromise impartiality; a bonus-linked reporting line is precisely such a pressure. Clauses 4.1.4 and 4.1.5 require ongoing identification of risks and demonstrable elimination or minimization.

Additional actions: restructure or document the reporting line; remove results-linked incentives; create the impartiality risk register with owners and review dates; authorize a second signatory; change or independently review the calibration supplier relationship; feed impartiality into management review (8.9.2) and into the internal audit programme (8.8); and ensure staff can raise concerns without retaliation.

Evidence an assessor will request: the current organization chart and job descriptions, the impartiality risk register with actions and closure evidence, management review minutes discussing it, records of a declined or escalated request, the external provider approval file, and interviews with staff that match the records.