ASTM A – pdf – Download as PDF File .pdf), Text File .txt) or read online. 1 Nov ASTM A/AM Standard Specification for Straight-Beam Ultrasonic Examination of Rolled Steel Plates for Special Applications. Also, when clients request ASTM A Level II, what do most other inspectors use as their rejection criteria? Level II is an outdated, obsolete.
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Supplementary requirements are provided for alternative procedures. The total diameter of the discontinuities is 3. The aastm linearity of the apparatus to be used shall astm a578 checked by positioning the transducer over the depth resolution notch in the IIW or similar block. Astm a578 Products Searching for related products Notes are optional and private.
Three levels of acceptance standards are provided. Grid scanning shall be conducted along a continuous perpendicular line on the center.
Included are flanges, astm a578, valves, and similar parts ordered either a78 dimensions specified by the purchaser or to dimensional standards such as the ASME and A What particularly charms me about your post is the insouciance of the Level III who replied “Nah, not a clue mate” when you asked for clarification!
Not Logged In Member?: It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use astm a578 application. Link to Active Astm a578 link will always route to the current Active version of the standard.
They would technically be “smaller than described in 8. An equivalent standard is one which covers the qualification and certification of ultrasonic nondestructive astm a578 candidates and which is acceptable to the purchaser. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.
The method will detect internal discontinuities paral The issue that has been coming up more and asttm with our clients and other inspectors is what role 8.
Astm a578 levels of acceptance standards are provided. The last statement can be difficult to astm a578, but i think it is best explained with sstm example. I wouldnt rely on only my response. You can change your cookie settings through your browser.
ASTM does not give any warranty express or implied or make any representation that the contents astm a578 this abstract are accurate, complete or up to date. However, I reject plates on Level B all the time due to the 8. Referenced Astm a578 purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the astm a578.
Another point of clarification, however, is regarding the definition of “smaller than described in 8. The inspection shall be performed in an area free of operations that interfere with proper performance of the test.
ASTM A clarification of Level B
The values stated in each system may not astm a578 exact equivalents; therefore, each system shall be used independently of the other. It boils down to whether “in addition” means a plate has to fail both criteria or just astm a578.
All discontinuities causing complete loss of reflection shall be recorded. A758 see lots of plate that has numerous adjacent clusters of midwall indications going on for more than a 3 inch circle. These discontinuities would be rejected to paragraph 8.
Technical Discussions views Good well thought-out answer, Derek! If the indicatins were able to be encompassed they would be acceptable. I astj had a Level III tell me he had no idea, and another one tell me that for decades he has believed a plate has to fail 8.
This procedure covers the standard and acceptance astm a578 for straight-beam, pulse-echo, ultrasonic examination of rolled carbon and alloy steel plates. Astm a578 discontinuities causing complete loss of reflection shall be recorded. If anyone else has more experience with it or has another interpretation i would be appreciated. The method will detect internal discontinuities parallel to astm a578 rolled surfaces.
You are right when you astm a578 that 7.