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Mechanical Integrity
June 4, 2018

What is Mechanical Integrity?

Mechanical integrity (MI) is just one of the 14 elements included in Process Safety Management (PSM), driven by the OSHA 1910.119 standard. “Mechanical Integrity means the process of ensuring that process equipment is fabricated from the proper materials of construction and is properly installed, maintained, and replaced to prevent failures and accidental releases.”

What Equipment is Involved?

Fixed equipment such as, pressure vessels and dispersion tanks, piping systems and associated hardware (valves, fittings, etc.), relief devices, vent hardware and emergency shutdown/control systems, are examples. Rotating equipment/assets, such as pumps, blowers, fans, and compressors that may be used to move hazardous materials within these systems are also included. In many cases, this means that all equipment within the boundaries of a facility is subject to the PSM standard.

Who should perform Mechanical Integrity Inspections?

Personnel involved in an MI Inspection must be properly and continuously trained to bring the necessary skills to bear when considering or maintaining equipment. A requirement of an effective MI program is to validate and document training effectiveness and whether the person can execute effectively on what they’ve learned.

Certifications are important to ensure that your program is recognized by OSHA. Contractors, technicians and any other individual that may become involved in the MI program should also be trained to understand the hazards that are present and mitigating strategies that are in place to manage potential incidents.

Why Do We Conduct 5 Year Mechanical Integrity Inspections?

Mechanical Integrity inspections are conducted in order to preserve the efficiency and longevity of equipment assets but, most importantly, they are meant to prevent injury and ensure safety among employees.

For that reason, a 5-Year Mechanical Integrity Inspection review includes thorough analysis of entire refrigeration systems. Trained mechanical engineers view all equipment, documentation, and operating conditions. 5 Year MI’s should also require follow up consultation to discuss the findings as well recorded recommendations to mitigate issues found during the inspection.

To learn more about Mechanical Integrity Inspections and the benefits they offer your facility, contact or call (540) 246-0697.


Innovative Refrigeration Systems, Inc. is a design, build contractor with over 20 years’ experience in the industrial refrigeration market. We specialize in designing safe, reliable, and energy efficient refrigeration systems even at full turn down. Our engineering staff is highly trained and experienced designing refrigeration systems including Ammonia, Ammonia/ CO2 Cascade Systems, Freon Split Systems, Processing Applications, Blast Freezing applications and more. Utilizing the latest technology throughout our design build process, we are confident that the quality and performance of our systems is unrivaled in the industry. For more information, please visit our website.