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..
|1||ANSI||American National Standard Institute||United States|
|2||SCC||Standard Council of Canada||Canada|
|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 BPVC CODE
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 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|