scope:

This part of NES 729 defines the minimum requirements for methods of detection of surface and near-surface discontinuities in electrically conductive materials, which may be ferromagnetic or non-ferromagnetic, using eddy current examination techniques.

The requirements for the use of manually operated portable eddy current instruments designed specifically for the detection of surface-breaking cracks in welds are included.

The requirements of this NES are applicable to all items for which specifications, standards, drawings, refit or repair instructions require eddy current examination.

The NES is also applicable to the Quality Assessment of Examining Authorities who perform eddy current examination.

This NES does not cover:

the extent to which eddy current examination is required. This requirement is to be stated in relevant Contract;

acceptance criteria for defects;

the examination of nuclear plant and machinery.