An audit system is a systematic and independent examination of an organization’s activities, procedures, records and performance to determine whether they comply with established standards, rules, regulations and objectives. In industrial safety, an audit helps to identify unsafe conditions, unsafe practices, legal non-compliance and weaknesses in the safety management system. Audit systems can be classified in several ways depending upon the purpose, scope, authority and frequency of the audit. 1. Internal Audit: An internal audit is conducted by competent personnel within the organization. Its main purpose is to assess whether safety policies, procedures and control measures are being properly implemented. It helps management identify deficiencies and take corrective action. Internal audits are generally conducted at regular intervals. 2. External Audit: An external audit is carried out by an independent person, agency or organization outside the establishment. It provides an impartial assessment of the organization’s safety performance and compliance. External audits may be conducted for certification, regulatory requirements, customer requirements