The definition for Quality, i. e. "Fitness for use" is judged by the application of the NDT techniques. Product's fitness depends on factors of different nature and no wonder NDT is playing as a prime key in deciding that. NDT by is name itself confirms that this is a process of testing the materials/products without destroying the same. We as a renowned manufacturer of pressure vessels, heat exchangers, storage tanks, etc. have a formulated Quality Assurance System to manufacture our products to such a level of Quality expected by Customers and also approved against the requirements of varieties of Codes and Standards. One can firmly say that NDT is the main criteria which helps to achieve this Quality by applying its various types of techniques like conventional Radiography Testing, Magnetic Particle Testing, Ultrasonic Testing, Liquid Penetrant Testing, Leak Testing and in special applications, highly sophisticated techniques like strain-gauge measurements, eddy current testing, UT through P- Scan, etc.

Knowledge up dation, physical verification and training are very essential in carrying out any NDT technique which inturn add to the assurance of Quality of the product, Personnel Certification Programmes as per certain stipulated rules and regulations controls the utilization of the product's quality and repeatability of test results are ensured. As an approved manufacturer of ASME, we are having our own Certification Programme and by proper certification of personnel at appropriate time, we are assuring the product's quality through reliability of test reports.

From the days of X-ray invention to till today, NDT plays a major role in the field of Quality Assurance activities. Quality Assurance of pressure bearing components is very critical and requires some expertise in this area. We, from our experience, confirm that NDT is the main tool in helping to achieve this goal. This paper explains various facts of how NDT is being effectively used to assure quality of pressure vessels, heat exchangers, etc. during various stages of manufacture and how quality is assured to Clients through the application of NDT by proper selection and use of appropriate techniques with fully trained, qualified and certified personnel.