5 Types of Industry Audits and Their Objectives

What is an industrial audit?

An industrial audit is a methodical and in-depth evaluation of all the processes of a manufacturing company, conducted according to a defined reference system. This inventory aims to identify strengths, weaknesses, bottlenecks and areas for improvement along the production chain.

Industrial diagnostics can also help ensure regulatory compliance and identify improvements needed to optimize the safety, quality, sustainability, and efficiency of industrial operations.

The industrial audit is carried out by an independent third party: internal or external auditor, specialized consultant, interim manager, risk management company. These diagnoses are carried out periodically, as part of a voluntary or regulatory approach.

The normative framework of reference

ISO 19011:2018 remains the international standard for conducting management system audits. It applies to quality audits (ISO 9001:2015) as well as environmental audits (ISO 14001:2015) or safety audits (ISO 45001:2018). The expected revision of ISO 9001, for which preparatory work is underway in ISO/TC 176, is expected to strengthen the integration of climate issues and supply chain resilience, according to ISO Technical Committee 176.

Let’s be clear: an industrial audit is not just a simple documentary verification. Experienced auditors insist on the importance of field observation, interviews with operators and triangulation of data to produce truly actionable findings.

5 Examples of Industrial Audits and Their Objectives

Here are the five most common industry audits, their objectives, and the concrete benefits they bring to organizations:

1. Regulatory compliance audit

The objective of the regulatory compliance audit is to verify compliance with the laws and regulations that apply locally, for the sector of activity concerned: pharmaceutical industry, agri-food industry, nuclear industry, etc.

This type of industrial audit ensures that industrial activities comply with the standards in force in terms of safety, health, respect for the environment and quality at each stage of the production chain.

This compliance audit responds to large-scale challenges for industrial companies. The inspection may also result in the awarding of certifications, labels or licenses attesting to compliance with the standards in force.

Carrying out an industrial compliance audit not only makes it possible to meet legal requirements, but also to reassure stakeholders, protect the company’s reputation and control the risks inherent in the manufacture and marketing of products.

Feedback: In highly regulated sectors such as nuclear or pharmaceuticals, auditors find that companies that anticipate regulatory changes — rather than being subject to them — significantly reduce the cost of compliance. The proactive approach transforms the compliance audit into a strategic lever, not just a defensive exercise.

2. Operational performance audit

The objective of the operational performance audit is to evaluate and improve the efficiency of a company’s production processes.

It aims to analyze all equipment, tools, production processes and internal practices to identify possible bottlenecks, sources of waste and all failures generating a lack of operational efficiency.

This type of industrial audit is critical to optimizing workflows, reducing costs, maximizing performance, reducing lead times, and improving customer satisfaction—and ultimately strengthening the competitiveness and profitability of the business.

Key data: According to a McKinsey analysis published in 2025, industrial companies that conduct regular and structured operational audits manage to reduce their operational costs by 15-25% over a three-year cycle, mainly through the elimination of waste and the optimization of flows (McKinsey Operations Practice, 2025).

3. Quality audit

Ensuring compliance with quality standards remains a direct lever for guaranteeing the company’s competitiveness and customer satisfaction.

To assess the effectiveness of its quality management system, the company may undertake an industrial audit. This will ensure compliance with ISO quality standards and internal requirements, and highlight areas for improvement. The industrial audit will also make it possible to identify recurring quality defects, their causes, and to implement corrective and preventive actions to improve the level of quality of the products.

Quality auditing is not limited to the verification of documented procedures. The most seasoned auditors focus on observing real practices in the field, cross-referencing production data with customer complaints and assessing the quality culture within the teams. It is this systemic approach that differentiates a high value-added audit from a simple formal control.

The American Society for Quality’s (ASQ) Global State of Quality Research study highlights a clear finding: organizations that invest in a structured quality culture and mature audit programs achieve better results in terms of product compliance, customer satisfaction, and financial performance than those that limit themselves to spot checks (ASQ — Global State of Quality Research).

4. Security audit

For industrial companies, ensuring a safe working environment and controlling occupational risks is a central concern. Conducting a safety audit is a key step in ensuring the health and well-being of employees.

This form of industrial audit analyses and identifies any existing risks and ensures compliance with the necessary safety measures to prevent occupational accidents.

The security audit consists of:

• Inspect equipment and facilities
• Verify that employees are properly trained in security practices
• Evaluate the security protocols in place
• Analyze past incidents and near misses
• Measure compliance with ISO 45001:2018 standards and local regulations

At the end of this diagnosis, the auditor provides recommendations to minimize risks and ensure that internal practices comply with the security standards in force.

Feedback: experienced security auditors insist on an often overlooked point: the behavioral dimension. The equipment may be compliant, the procedures perfectly drafted, but if the safety culture is not anchored in the daily habits of the operators, the risk persists. The most effective security audit combines technical analysis and observation of field behavior.

5. Environmental audit

It is estimated that the manufacturing industry accounts for 18% of total CO2 emissions in France, according to government figures.

Faced with the climate emergency, it is imperative that industry players integrate sustainable development issues at the heart of their commitments. The European CSRD (Corporate Sustainability Reporting Directive), which is gradually being applied to mid-caps, reinforces this obligation of environmental transparency.

The first step towards the energy transition of its industrial activity is the completion of an environmental audit. This type of audit will make it possible to assess environmental performance, identify areas for improvement as well as the levers to be activated to strengthen the company’s CSR policy throughout its production chain: eco-design, choice of sustainable and recycled materials, choice of responsible suppliers, responsible waste management, etc.

The environmental audit will not only strengthen the environmental performance of the industrial company, but also ensure the compliance of its activities with local and international environmental standards.

According to the World Economic Forum’s Net-Zero Industry Tracker report, industrial companies that carry out a full environmental audit before defining their decarbonization roadmap achieve their emission reduction targets twice as fast as those that proceed without a prior diagnosis (WEF — Net-Zero Industry Tracker).

Cost and benefit of industrial audits: a profitable equation

The question of the return on investment of industrial audits comes up systematically in management committees. The cost of an audit varies considerably depending on the scope, the complexity of the site and the reference framework used. But the real calculation to be made is that of the cost of non-quality and non-conformity.

Measurable benefits of a structured audit program include:

• Reduced non-compliance costs : product recalls, regulatory penalties, customer disputes
• Improved overall equipment effectiveness (OEE) of equipment
• Decrease in the rate of accidents at work and associated absences
• Strengthening the trust of clients and partners
• Faster certification ISO and sector

Deloitte notes in its Manufacturing Industry Outlook study that manufacturers who invest in regular audits and in the digitalization of their audit processes see an improvement in their operating margin of 3 to 5 points over a two- to three-year horizon (Deloitte, 2025).

Industrial auditing, the basis for continuous improvement

All these industrial audits are complementary and are part of a logic of permanent improvement. They make it possible to maximize the financial, operational and environmental performance of the company, while ensuring compliance with regulatory requirements and the continuous control of all risks related to industrial activities.

These diagnoses provide valuable data to guide decision-making, identify opportunities to be seized and integrate industrial performance into a continuous improvement process.

But make no mistake: the value of an audit is not in the final report. It is measured by the quality of the corrective actions implemented and their long-term anchoring. This is precisely where the role of the interim manager comes in.

The interim manager, accelerator of your industrial audits

Conducting an industrial audit requires cutting-edge sector expertise, total independence from the teams in place and the ability to quickly transform findings into concrete actions. The interim manager combines these three qualities.

Within Wayden, our interim managers regularly work on audit and industrial performance management missions. For example, as part of an industrial management control mission, a Wayden manager conducted a complete diagnosis of production processes, identified performance gaps and deployed a corrective action plan that restored financial visibility and sustainably optimized production costs.

This ability to move from diagnosis to execution — without an extended adaptation period — makes interim management a lever particularly suited to industrial audit contexts, whether it is an urgent compliance, preparation for certification or an operational excellence program.

Are you preparing for an industrial audit or want to transform the results of a diagnosis into sustainable operational gains?

Talk to a Wayden expert

Frequently asked questions about industrial auditing

What is an industrial audit and what is it used for?

An industrial audit is a methodical assessment of a manufacturing company’s processes, equipment, and practices. It aims to identify strengths, weaknesses and areas for improvement to strengthen regulatory compliance, quality, safety and operational performance.

What are the 5 main types of industrial audits?

The five most common industry audits are: regulatory compliance audit, operational performance audit, quality audit, safety audit, and environmental audit. Each one meets specific objectives but all are part of a continuous improvement process.

What ISO standards govern industrial audits?

ISO 19011:2018 provides guidelines for auditing management systems. It is complemented by ISO 9001:2015 for quality, ISO 14001:2015 for the environment and ISO 45001:2018 for occupational health and safety. The revision of ISO 9001 expected in 2026 should further integrate climate issues.

What is the return on investment of an industrial audit?

According to McKinsey, companies that conduct regular audits of their industrial operations see a reduction in operational costs of up to 15 to 25 percent. The ROI depends on the scope audited, but the gains are also measured in the reduction of non-conformities, a reduction in accidents and an improvement in customer satisfaction.

Why use an interim manager for an industrial audit?

An interim manager brings cutting-edge sector expertise, total independence from internal teams and the ability to quickly carry out the corrective actions identified during the audit. Its intervention accelerates compliance and anchors results over time.