The Center for Offshore Safety, in accordance with 30 CFR 250.1922, is recognized as an Accreditation Body (AB) by the Bureau of Safety and Environmental Enforcement (BSEE) to accredit Audit Service Providers (ASPs) for the purpose of conducting Safety and Environmental Management Systems (SEMS) audits of offshore operators pursuant to 30 CFR 250 Subpart S. The list below is updated as necessary and when there is a change of status of an applicant or ASP. Contact the COS with questions or concerns at:

The Center for Offshore Safety
192019 Katy Freeway, Suite 175
Houston, TX 77094, USA
Phone: 832-495-4925
Email: info@centerforoffshoresafety.org 
Accredited Audit Service Providers (ASP)

The following organizations have been accredited by COS and are authorized to conduct SEMS audits pursuant to 30 CFR 250 Subpart S and to issue certificates pursuant to COS-2-03 Requirements for Third-Party SEMS Auditing and Certification.


Accredited ASP Contact Last Audit Issued Date Expiration Date
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There are no registered audit service providers at this time.

* If an organization has an asterisk, it means that it has been granted provisional accreditation by COS but has not yet completed a SEMS audit witnessed by COS. An ASP with Provisional Accreditation is authorized to conduct a SEMS audit pursuant to 30 CFR 250 Subpart S, but cannot issue SEMS certificates until successful completion of the required witness audit. An ASP with provisional accreditation has completed an application and successfully undergone a COS office assessment. Please contact COS if you have any questions.