Past COS Annual Reports

COS provides a list of COS-accredited Audit Service Providers that are authorized to conduct SEMS audits and issue SEMS certificates.

API Recommended Practice 75 provides guidance on SEMS in four area areas of maturity: establishing, implementing, maintaining, and improving.

Many COS members have obtained and maintain a COS SEMS certificate, demonstrating their commitment to the highest standards for safety and environmental protection.