Revised Standard from Last Update.

1. SCOPE

This standard prescribes the methods of test for detecting and locating defects in vitreous enamelled sheet steel and vitreous enamelled cast iron articles using a low and high voltage.

NOTES

1 The low voltage test is not intended as an alternative to high voltage test, but is a non-destructive test method for detecting defects which extend down to the metal base and weak spots in the enamel layer.

2 The purpose of the high voltage test is to detect and locate defects which extend down to the metal base, and weak spots in the enamel layer, that is, those areas of the enamel laver where its thickness falls below the required value determined by the application of high voltage, because of blisters, foreign body inclusions, spalling or cracks.

2. REFERENCES

The standards given below contain provisions, which through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of these standards:

IS 2717 : 1979 Glossary of terms relating to vitreous enamelware and ceramic - Metal systems (first revision)