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As seen earlier that basic NDT methods are VT, MT, RT, UT, PT

To meet the standard requirement, all NDT procedures must be carried out as per standard procedure to obtain desired test results. These procedures are derived from applicable codes and standards.

Standards, Codes, and Specifications

A code is a set of rules, regulations, strictures, minimum requirements for “ethical conduct”. It is a group of general rules or systematic procedures for design, fabrication, installation, and inspection that are adopted by legal jurisdiction and made into law.

Codes are intended to set forth engineering requirements deemed necessary for the safe design and manufacturing of critical machinery and components.

Code has the force of law, unlike standards that are voluntarily accepted guidelines that become mandatory only when incorporated into a business contract.


Standards are the documents, prepared by professional societies or committees, which are believed to be efficient engineering practices and which contain mandatory requirements. The users are responsible for the correct application of the same. Compliance with the standard does not itself confer immunity from legal obligations.

The major standards are shown below..

Sr no Abbreviation Organization Country
1 ANSI American National Standard Institute United States
2 SCC Standard Council of Canada Canada
3 AFNOR Association Francaise France
4 BSI British standard Institute United Kingdom
5 CEN Committee of European Normalisation Europe
6 DIN Deutsches Institute for Normung Germany
7 JISC Japanese Industrial standards committee   Japan
8 BIS Bureau of Indian standards India
9 ISO International  Organisation For standards worldwide  Worldwide


ASME Code BPVC (Boiler and Pressure vessel code) is a code of construction for boilers and pressure vessels formulated by ASME. It is a manufacturer’s code and is reviewed every year hence making it an alive and up-to-date code.

ASME BPVC List of Sections
SECTION I Rules for construction of Power Boilers
SECTION II Materials
SECTION III Rules of construction for Nuclear facilities Components
SECTION IV Rules of construction for heating boilers
SECTION V Non Destructive Testing
SECTION VI Rules for care and operation of heating boilers section 
SECTION VII Guidelines for the care of power boilers
SECTION VIII Rules for construction of pressure vessels
SECTION IX Welding and Brazing Qualification
SECTION X Fibre-Reinforced Pressure vessels
SECTION XI Rules for in-service inspection of Nuclear power plant components section 
SECTION XII Rules for construction and continued service of transport tanks

ASME Section V             

ASME Section V paves the way for inspection procedure to be incorporated in BPVC

Commonly Used Articles of ASME BPVC Sec V
Article 1 General Requirements
Article (2 & 22) Radiographic Examination
Article (4,5 & 23) Ultrasonic Examination
Article (6 & 24) Liquid Penetrant Testing
Article (7 & 25) Magnetic Particle Testing
Article (8 & 26) Eddy Current Testing
Article 9 Visual Testing
Article 10 Leak Testing
Article (11,12,13 &29) Acoustic Testing

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