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
ISO 4987:2010