Historical
BS EN ISO 23277:2009
Non-destructive testing of welds. Penetrant testing of welds. Acceptance levels (British Standard)
ISO 23277:2006 specifies acceptance levels for indications from surface breaking imperfections in metallic welds detected by penetrant testing.
The acceptance levels in ISO 23277:2006 are primarily intended for use during manufacture examination, but where appropriate they can be used for in-service inspection.
These acceptance levels can be related to welding standards, application standards, specifications or codes.
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British Standards Institution [bsi]
British Standards Institution [bsi]