1 Scope
This Standard specifies a testing method for determining the acceptance limits of surface discontinuities detected by penetrant testing, when such a testing procedure has been contractually agreed upon at the request of the purchaser.
This Standard applies to all steel castings, whatever casting process is used.
Note: It should be remembered that penetrant testing, like all methods of non-destructive testing, forms part of an overall or special assessment which is defined in the contract.
2 Normative References
The following documents contain provisions which, through reference in this Standard, constitute the provisions of this Standard. For dated reference, subsequent amendments (excluding corrections) to, or revisions of, any of these publications do not apply. However, parties coming to agreements according to this Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For undated references, the latest edition of the document referred to applies.
GB/T 18851.1 Non-destructive Testing - Penetrant Testing-Part 1: General Principles (GB/T 18851.1-2005, ISO 3452: 1984, IDT)
GB/T 18851.5 Non-destructive Testing - Penetrant Testing-Part 5: Means of Verification (GB/T 18851.1-2005, ISO 3453: 1984, IDT)
3 Conditions of Penetrant Testing
3.1 This Standard only applies to the parts of steel castings and the percentage of steel castings to be inspected. The conditions shall be clearly indicated on the enquiry, in the request for prices and, more particularly, in the order sent to the supplier and accepted by him.
Foreword I
1 Scope
2 Normative References
3 Conditions of Penetrant Testing
4 Method of Testing
4.1 Operating Mode
4.2 Qualifications of the Operators
4.3 Surface Condition
4.4 Conditions of Observation
5 Acceptance Testing
6 Interpretation of Results
7 Order
8 Additional Testing for Cleaning after Testing
Annex A (Informative) Nature of Discontinuities - Types of Indication
Annex B (Informative) Penetrant Testing Method - Specific Requirements for Steel Castings
Annex C (Informative) Equivalence of Surface Conditions (As a Guide)
Annex D (Informative) Examples of Severity Levels
