OHCS has accreditation from the following agencies for their construction activities.

American Society of Mechanical Engineers for Fabrication of Pressure Vessels under 'U' stamp.

National Board of Boiler and Pressure Vessel Inspectors for repairs and/or alterations of Pressure Vessels under 'R' stamp and to register boilers, pressure vessels or other pressure retaining items under 'NB' stamp.

The National Accreditation Board for Testing & Calibration Laboratories for its Testing and Inspection Services