MANDATORY APPENDIX III

LIQUID PENETRANT EXAMINATION: PROCEDURE AND

ACCEPTANCE STANDARDS

III-1 PROCEDURE

Liquid penetrant procedure shall be in accordance with

ASTM E165.

III-2 ACCEPTANCE STANDARDS

1

III-2.1 Castings

(3) 18-mm (0.7-in.) long for materials over 25-mm

(1.0-in.) thick

For linear indications, the indications must be sepa-

rated by a distance greater than the length of an acceptable

indication. A linear indication is one with length in excess

of 3 times the width.

(b) Rounded Indications

(1) 8-mm (0.3-in.) diameter for materials up to 13-

mm (0.5-in.) thick

(2) 13-mm (0.5-in.) diameter for materials over 13-

Maximum acceptable indications are as follows:

(a) Linear Indications

or less thick

(0.5-in.) to 25-mm (1.0-in.) thick

(1.0-in.) thick

For linear indications, the indications must be sepa-

rated by a distance greater than the length of an acceptable

mm (0.5-in.) thick

Four or more rounded indications in a line separated by

1.5 mm (0.06 in.) or less edge-to-edge are unacceptable.

Rounded indications are those that are not defined as

linear indications.

however, the size of the indication is the basis for acceptance evaluation.