Steel castings. Liquid penetrant inspection

BS ISO 4987:2010 Steel castings. Liquid penetrant inspection

BS ISO 4987 is an International Standard which specifies a method for the liquid penetrant inspection of steel castings, whatever their grade and the casting procedure used to produce them.

Contents of BS ISO 4987:

Foreword

Introduction

1 Scope

2 Normative references

3 Ordering information

4 Method of inspection

4.1 Operating mode

4.2 Qualification of the operators

4.3 Surface preparation

4.4 Conditions of inspection

5 Acceptance criteria

5.1 Definition of liquid penetrant indications

5.1.1 General

5.1.2 Non-linear indications (SP

5.1.3 Linear indication (LP

5.2 Severity levels

5.2.1 General

5.2.2 Non-linear indications

5.2.3 Linear indications

5.2.4 Selection of the severity level

5.2.5 Designation of severity levels

6 Classification of the indications and interpretation of results

6.1 Classification of the indications using Tables 1 and 2

6.1.1 General

6.1.2 Non-linear indications

6.1.3 Linear indications

6.2 Interpretation of results

7 Retesting

8 Post-examination cleaning procedures

9 Inspection documentation

Annex A (informative) Recommended surface finish for liquid penetrant inspection

Annex B (informative) Reference figures — Non-linear isolated indications (SP

Annex C (informative) Reference figures — Linear indications (LP

Annex D (informative) Model of a liquid penetrant inspection document

Bibliography