Hi all,
After having a comment from my client on a RT report regarding the wire IQI used and reported, I found out that ASME BPVC Section V, article 2, refers only to essential wire, but does not refer to "better", like it refers for the hole.
I mean that, in a specific case, the RT was performed on a 38mm thick weld (weld reinforcement included) coupon, for which the essential wire is #10 of the "B" set, for Source Side placement. But, our radiographer, managed to achieve wire #7, which is thinner, which means that the film provides more detail than the minimum required... So, he reported "7", at the corresponding IQI box. On the report, he also reported that the used set is "Set B".
I tried to explain it to my client, but I cannot support it based on the Code, since the Code does not provide such option (essential or better), as it provides in T-283.2 for the hole IQIs. So, is the "essential" wire the only target regarding IQIs, when performing RT, or a "better" wire visible, like in my case, is accepted?
To my mind, a more detailed RT (based on visible wire) should be accepted, since the achieved film quality is "better", at least in terms of detail.
I know that a more detailed RT may lead me to other problems, like indications that I would not talk about in alter case, but my question is targeted to the "should he accept the film, or not", since no other indications (relevant or non-relevan) are in any case, absent.
For the record, the radiation source is Ir192, source size 2.0 x 1.6 mm, activity 23Ci, fil KODAK T200, screens 0,02mm, SWSI, FFD 254mm.
Only best result in absolutely necessary time
After having a comment from my client on a RT report regarding the wire IQI used and reported, I found out that ASME BPVC Section V, article 2, refers only to essential wire, but does not refer to "better", like it refers for the hole.
I mean that, in a specific case, the RT was performed on a 38mm thick weld (weld reinforcement included) coupon, for which the essential wire is #10 of the "B" set, for Source Side placement. But, our radiographer, managed to achieve wire #7, which is thinner, which means that the film provides more detail than the minimum required... So, he reported "7", at the corresponding IQI box. On the report, he also reported that the used set is "Set B".
I tried to explain it to my client, but I cannot support it based on the Code, since the Code does not provide such option (essential or better), as it provides in T-283.2 for the hole IQIs. So, is the "essential" wire the only target regarding IQIs, when performing RT, or a "better" wire visible, like in my case, is accepted?
To my mind, a more detailed RT (based on visible wire) should be accepted, since the achieved film quality is "better", at least in terms of detail.
I know that a more detailed RT may lead me to other problems, like indications that I would not talk about in alter case, but my question is targeted to the "should he accept the film, or not", since no other indications (relevant or non-relevan) are in any case, absent.
For the record, the radiation source is Ir192, source size 2.0 x 1.6 mm, activity 23Ci, fil KODAK T200, screens 0,02mm, SWSI, FFD 254mm.
Only best result in absolutely necessary time
