Hello, I have questions for A.I. about ASME VIII Division 3:

-1) KE301a, end: " The weld fusion shall be inspected using the appropriate test procedure(s) and calibration(s).Indications greater than 20% of the ultrasonic reponse from the planar reflector shall be consider relevant and shall be investigated according KE333".
The following my interpretation is correct: << The calibration is performed with standard block T-434.2.1 of ASME V Article IV; indications greater than 20% of the DAC (built with standard block T-434.2.1 of ASME V Article-IV) are relevant and shall be investigated according KE333 >> ?

-2) KE301b, end: " The testing technique will be considered acceptable if the reponse from the embedded flaws exceeds 20% of the ultrasonic response from the planar reflector in the specific calibration block". The following my interpretation is correct: << The technique is considered acceptable if the response from the planar reflector is greater than 20% of the DAC (built with standard block T-434.2.1 of ASME V Article-IV) >>?

-3) KE333, par.1 : “All indications which produce a response greater than 20% of reference level shall be investigate ….” . The following my interpretation is correct: << The reference level is DAC built with standard block T-434.2.1 of ASME V Article-IV >>?

-4) KE333b: “ indications are unacceptable if the amplitude exceeds the reference level, OR indications have lengths which exceed:....”.
My question about this last point is: << As for Div.1, we should have an <AND> instead of <OR>, or here (Div. 3) is a more restrictive policy, independent of the length >> ?

Thank you very much!
Mario