Mechanical Integrity

At NVI, our goal is to ensure the maximum life of equipment and to allow the longest interval between shutdowns. NVI, LLC specializes in mechanical integrity inspection programs for piping systems, pressure vessels, tanks and related components to ensure integrity and fitness for service. We provide you with the most accurate analysis possible. NVI has a team that is believed to the best team of API- Certified Inspectors, Certified ASNT NDE Inspectors, Computer Specialist and AutoCad operators in the industry.

Our vast amount of experience in this field has been nationally recognized by companies who rely on our inspection, data analysis, and customized reporting to implement programs that meet the regulatory requirements of OSHA, and API recommended best practices. We carry our these functions in a safe, reliable and cost effective manner.

Our team approach to a comprehensive solution based inspection program of your assets has proven to be very successful. The data is organized in a customized, cost effective report created for ease of analysis, review, and scheduling of follow up inspection.

API 580 & 581 Risk Based Inspection

NVI conducts these inspections to determine both the probability and consequences of failure, establish inspection intervals, ascertain the extent of the inspection required, and determine the most suitable type of nondestructive evaluation to use.  Our technicians typically draw on their knowledge of risk assessment, risk mitigation, risk acceptance, and risk communications.

API 579 Fitness-for-Service Evaluations

NVI performs these quantitative engineering evaluations to demonstrate the structural integrity of an in-service component that may contain a flaw or be damaged.  Our goal is to determine the component’s remaining life, possible methods of remediation, and required in-service monitoring.

API 510 Pressure Vessel Inspection

API 510 covers internal and external inspection, rerate, repair, and alterations to in-service pressure vessels and their associated pressure-relieving devices. External visual inspections, conducted by an NVI-certified 510 inspector or an examiner qualified to perform an external inspection, covers the outside surface of a vessel, insulation condition, paint/coating condition, supports, associated structures, leaks hot spots, vibration and allowance for expansion and alignment of the vessel on its supports.  Internal visual inspections can be conducted only by certified 510 inspectors.  They are performed to locate damaged areas on the internal pressure boundary surfaces that could not be found during an external inspection

API 570 Process Piping Inspection

Performed by an NVI API 570 inspector or trained examiner, API 570 covers inspection, rerate, repair, and alterations to in-service process piping and their associated pressure relieving devices.  These inspections are conducted to confirm the external condition of the piping and the integrity of the insulation, painting/coating, and associated components.  They should reveal signs of misalignment, vibrations, and leaks.

API 653 Above Ground Storage Tank

NVI maintains trained API 653 inspectors on staff for external inspections, which cover the condition of the foundation, coating condition, insulation condition, conditions of tank appurtenances, leaks, distortion, and settlement.  Internal inspections focus on ensuring that there is no severe corrosion or leaks in the tank floor. 

Code Compliance Inspections

NVI serves customers by providing inspections that meet code requirements for each component.  The inspections we offer include API 510 for pressure vessels, API 570 for piping, and API 653 for tank inspection, repair, alternation, and reconstruction.

Corrosion-Under Insulation

Thanks to NVI’s corrosion-under insulation program, clients can operate with the confidence of knowing their equipment is in sound working order.  Our specially trained technicians will choose the most appropriate approach—whether visual inspection, guided longwave, radiography, or installation of inspection ports—according to circumstances.

External Corrosion Inspections

Visual inspection is the most commonly used method to identify external corrosion, though tools such as guided longwave can be used for inaccessible areas.  Once the areas are identified, specially trained NVI technicians evaluate the area in light of all relevant code requirements.

Internal Corrosion Inspections

NVI technicians will use ultrasound, radiography, or guided longwave technologies to identify suspected areas of internal corrosion, and then employ B-scan or C-scan to map out those areas in detail.

Integrity Management

NVI will work with clients to develop and perform cost-effective integrity management services that comply with BSEE, SEMS, and PSHA 1910 requirements.  NVI’s integrity management inspections reduce downtime and ensure the safety and environmental performance of onshore and offshore facilities.

Regulatory Inspections

As a ISO 9001:2008-certified company, NVI performs inspections that meet requirements set forth in the Code of Federal Regulations by agencies such as the Nuclear Regulatory Commission (NRC), the Occupational Safety and Health Administration (OSHA), the U.S. Department of Transportation, and the Pipeline and Hazardous Materials Safety Administration (PHMSA).

Rope Access Inspections

NVI employs SPRAT-certified Level I, II, and III rope access technicians for projects that would otherwise require scaffolding.  They typically conduct ultrasonic, radiographic, magnetic particle, dye penetrant, and visual inspections, but can also use guided wave, phased array, and corrosion mapping technologies.  NVI can also use rope access to conduct NACE-compliant paint and coating inspections.

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