I was just going thro the pages (In box) of TNT journal published by
ASNT, the below is the extract
've noticed a few inquiries lately about Section 8.2.2 of SNT-TC-1A
2001 in the "Inbox". Having run into this particular issue myself a
couple of years ago during an audit, I have this to offer. Section
8.2.2 states in part "... distinguishing and differentiating contrast
among colors or shades of gray used in the method... ." In MT and PT
inspections, this usually means color vision capable of determining
red powder and/or red dye. In radiography this would be shades of
gray. The Ishihara color vision test is one of the accepted and
standard tests used to meet the needs and requirements for color
vision tests. A test standard does exist for gray scale — the Pelli-
Robinson test. Called my ophthalmologist and he referred me to a
supplier. S.C., Bakersfield, CA
However i could not find any links in the Bakersfield site
for more information you may writre to him or call him {(The Editor of
The NDT Technician (a.k.a TNT)}
hhumphries@asnt.org
(800) 222-2768 X 206
(614) 274-6899 fax
On Apr 22, 4:49 pm, "RAGHAVENDRA PEMMARAJU" <r...@hzw.ltindia.com>
wrote:
> Can any one of you suggest who is the supplier of Pelli-Robinson test kit which is useful for gray scale test as per above requirement.
>
> regards,
> Raghavendra
>
> Larsen & Toubro Ltd.www.larsentoubro.com
>
> This Email may contain confidential or privileged information for the intended recipient (s) If you are not the intended recipient, please do not use or disseminate the information, notify the sender and delete it from your system.
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