Gent's

Need some help. In accordance with QW-171.3, the CVN shall be removed from shaded portion as shown in QW-463.1(f) when qualifying in the 5G or 6G position. My questions are as follows;
1) Why the location of CVN is not taken at every 90 deg angle ( 12, 3 or 6 O'Clock)..?
2) Does this apply for both uphill & downhill progression?
3) If yes for item 2, and we do know that deposition rate for downhill is quicker than uphill, obviously less heat input - generated. As such, doesn't this cause differ charpy value as compared between downhill and uphill.

Another thing that is still bothering me; in B31.3, table 323.3.5 - CVN value. Now, we can see that the given energy values is corresponded to different specified min tensile strength of materials. That's fine. Question; in the table nothing actually stated that if the temp requirement is say -5c then you must qualify with impacts to -5c at so many joules???  

I appreciate your feedbacks...

Regards, John Boy..