| Exam Code/Number: | ISO-9001-Lead-AuditorJoin the discussion |
| Exam Name: | QMS ISO 9001:2015 Lead Auditor Exam |
| Certification: | PECB |
| Question Number: | 230 |
| Publish Date: | Dec 15, 2025 |
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Scenario 5: Mechanical-Electro (ME) Audit Stages
Mechanical-Electro, better known as ME, is an American company that provides mechanical and electrical services in China. Their services range from air-conditioning systems, ventilation systems, plumbing, to installation of electrical equipment in automobile plants, electronic manufacturing facilities, and food processing plants.
Due to the fierce competition from local Chinese companies and failing to meet customer requirements, ME's revenue dropped significantly. In addition, customers' trust and confidence in the company decreased, and the reputation of the company was damaged.
In light of these developments, the top management of ME decided to implement a quality management system (QMS) based on ISO 9001. After having an effective QMS in place for over a year, they applied for a certification audit.
A team of four auditors was appointed for the audit, including Li Na as the audit team leader. Initially, the audit team conducted a general review of ME's documents, including the quality policy, operational procedures, inventory lists, QMS scope, process documentation, training records, and previous audit reports.
Li Na stated that this would allow the team to maintain a systematic and structured approach to gathering documents for all audit stages. While reviewing the documented information, the team observed some minor issues but did not identify any major nonconformities. Therefore, Li Na claimed that it was not necessary to prepare a report or conduct a meeting with ME's representatives at that stage of the audit. She stated that all areas of concern would be discussed in the next phase of the audit.
Following the on-site activities and the opening meeting with ME's top management, the audit team structured an audit test plan to verify whether ME's QMS conformed to Clause 8.2.1 (Customer Communication) of ISO
9001.
To do so, they gathered information through group interviews and sampling. Li Na conducted interviews with departmental managers in the first group and then with top management. In addition, she chose a sampling method that sufficiently represented customer complaints from both areas of ME's operations.
The team members were responsible for the sampling procedure. They selected a sample size of 4 out of 45 customer complaints received weekly for electrical services and 2 out of 10 complaints for mechanical services.
Afterward, the audit team evaluated the evidence against the audit criteria and generated the audit findings.
According to general principles of sampling procedure, did the audit team select a valid sample for electrical services?
What is a horizontal audit?
You are conducting a third-party audit to ISO 9001 and interviewing the Training Manager. She explains that training is more important than ever because the organisation has had to reduce the number of staff employed. Many of the remaining staff are now required to be 'multi-skilled'. You ask to see plans for the multi-skilling training and are shown plans that look comprehensive, and include both 'on the job" training and internal and external training courses.
The records indicate that several staff required parts of their training to be repeated one month after the first training was provided. You ask why this was needed and are told that an investigation of customer complaints identified that several staff members did not complete certain tasks in the correct manner. The extra training was therefore recommended as a corrective action.
Based on this interview, which two of the tollowing audit trails would be the most appropriate to follow?
Select the two most appropriate audit trails from the following.
Below are four of the seven principles on which ISO 9000 series are based. Match a potential benefit to each of the quality management principles (QMP).

You are conducting a third-party audit to ISO 9001 and the next item on your audit plan is 'internal auditing'.
When reviewing a sample of audit records up to 5 years previously, you find that many contain non- conformance reports and no actions have been taken. You interview the Quality Manager.
You: "I have noted that many of the older files contain non-conformances that have not had any corrective action taken." Quality Manager: "Because the business is always changing, the departmental managers tell me that the non- conformances are no longer applicable. I made a decision that any non-conformance over 3 years old is automatically closed" You: "Do you obtain any confirmation beforehand from the appropriate departments that the non- conformances are no longer applicable." Quality Manager: " No, because they are so old I consider that they are no longer appropriate. Please remember that we take a risk-based approach which means we audit where and when it is considered important to do so.
Select one course of action you would now take from the options.
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