Liquid Penetrant Examination for Iron Casting
Liquid Penetrant Examination for Iron Casting
(OP)
Can anybody adivse which standard is used for the Liquid Penetrant Examination for Iron Casting?
I have a iron casting pump (API 610 I-1) and want to set up the acceptance criteria of Liquid Penetrant Examination on casing material (Iron casting)
Please advise.
I have a iron casting pump (API 610 I-1) and want to set up the acceptance criteria of Liquid Penetrant Examination on casing material (Iron casting)
Please advise.





RE: Liquid Penetrant Examination for Iron Casting
It depends on the specific application and governing Codes or Standards for the application. For example, if you have nothing to fall back on for casting quality (I would check API), the acceptance criteria for cast valve bodies are in ASME B16.34, as Annex D. If you do not have a copy of this standard;
Liquid PT Acceptance Criteria for Castings
Linear indications;
o.3" in length for materials up to 0.5" in thickness
0.5" in length for materials over 0.5" to 1" in thickness
0.75" in length for materials over 1" in thickness
for rounded indications
0.3" in diameter for materials up to 0.5" in thickness
0.5" in diameter for materials over 0.5" in thickness
RE: Liquid Penetrant Examination for Iron Casting
API 610/ISO 13709, 7.2.2. states that "NDE shall be performed as required by the material specification. If additional...liquid penetrant examination...is specified by the Purchaser...shall be in accordance with Table 13 - Materials Inspection Standards."
In which case, Table 13 gives ASME V Articles 6 and 24 for the Liquid Penetrant Method with ASME VIII Div 1 Appendix 7 as the acceptance standard for castings. Appendix 7 is a comprehensive document - just hope that no additional contractual examination has been specified so that its all down to the relevant material specification.
Hope this helps.
Nigel Armstrong
Lloyds Register
Independent Verification Body Surveyor
RE: Liquid Penetrant Examination for Iron Casting
RE: Liquid Penetrant Examination for Iron Casting
RE: Liquid Penetrant Examination for Iron Casting
Chocolates,men,coffee: are somethings liked better rich!!
(noticed in a coffee shop)
RE: Liquid Penetrant Examination for Iron Casting
Surface preparation for the casting is normally defined in the procedure used for the NDT method. If there is a concern with casting integrity, volumetric NDT in conjnction with surface NDT would be selected by the user.