Standard Swedish standard · SS-EN 15856:2010

Non-destructive testing - Acoustic emission - General principles of AE testing for the detection of corrosion within metallic surrounding filled with liquid

Status: Valid

Scope
This European Standard describes acoustic emission testing (AT) on metallic surroundings filled with liquids for the detection of corrosion processes that are active at the time of the test. It is applicable to metallic storage tanks, such as those used in the chemical and petrochemical industry.

The results provide a qualitative statement regarding the condition of the test object and a recommendation regarding the maximum allowable duration of the followon service period, based on the AT indications and additional information in order to characterize the AT indications.

In the case of flat bottomed storage tanks (FBST) the procedure described within this standard provides testing of the complete bottom, the tank shell up to the filling height and in case of a floating roof tank also the roof sheets in contact with the stored liquid.

As for every application of acoustic emission testing, the measured data contain information regarding active sources. An ongoing corrosion process, such as general corrosion and localized corrosion defined in EN ISO 8044, leading to progressive loss of wall thickness will be detected. A corrosion process which has stopped does not produce acoustic emission and will therefore not be detected at the time of test.

Subjects

Non-destructive testing (19.100)


Product information

Language: English

Written by: SIS - Materialteknik

International title: Non-destructive testing - Acoustic emission - General principles of AE testing for the detection of corrosion within metallic surrounding filled with liquid

Article no: STD-72267

Edition: 1

Approved: 2/1/2010

No of pages: 20