magnification

Date 05-06-2014 17:28

When you go to inspect a job for lets say D1.2 where you know cracking may be an issue... Do you use a loop or magnification on the entire job?

Also, have any of you every gone to do an inspection, passed a part, then recieved a call that it was rejected, leter to find out they had added something?

By Lawrence (*****)

Date 05-06-2014 19:39

I keep a 10 power and an inexpensive optical comparitor in my bag of inspection tools.

If somebody is over my shoulder or disputing a call, or it's just too close for a tape measure, I like to have it on hand.

Magnification is almost never required for VT... But using it does not change the tollerance eh?

By 803056

Date 05-15-2014 01:09

The use of magnification is always fair game under the D1.X structural welding codes. That isn't the case with other welding standards such as NAVSEA TP278.

I carry a couple of lenses (2X, 5X, and 10X) in my tool kit. I use them to confirm my observations. One of the lenses has a reticle that can reconcile down to 0.002 inch.

Al