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- since 1996 -
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Kalaivanan
NDT Inspector, ASNT LEVEL III
TNDT, Thailand, Joined Feb 2016, 76

Kalaivanan

NDT Inspector, ASNT LEVEL III
TNDT,
Thailand,
Joined Feb 2016
76
18:28 Aug-06-2017
Near distance acuity

Dear expert's,
I have confused with two book where SNT-TC-1A (page no. 6 sec 8.2.1)state minimum Jaeger 2
But cp189(page no. 4 sec 6.1.1)States min jaeger 1 is enough. Kindly recommend which I need to follow?
Thanks in advance

 
 Reply 
 
Hamid Reza
,
Canada, Joined Oct 2016, 68

Hamid Reza

,
Canada,
Joined Oct 2016
68
01:22 Aug-07-2017
Re: Near distance acuity
In Reply to Kalaivanan at 18:28 Aug-06-2017 (Opening).

Dear Kalaivanan,

The near vision acuity requirement is more stringent in CP-189 and it requires acuity to read the Jaeger # 1 instead of Jaegar # 2 which is required by SNT-TC-1A.

For your information, smaller points = more demanding:

Jaeger Snellen Point
J1+ 20/20 3
J1 20/25 4
J2 20/30 5
J3 20/40 6
J5 20/50 8
J7 20/70 10
J10 20/100 14

I hope you will find this information useful.

Sincerely,
Hamid Reza

 
 Reply 
 
PRADEEP BODDU
NDT Inspector,
K-KEM , India, Joined Feb 2016, 32

PRADEEP BODDU

NDT Inspector,
K-KEM ,
India,
Joined Feb 2016
32
13:01 Jan-24-2018
Re: Near distance acuity
In Reply to Kalaivanan at 18:28 Aug-06-2017 (Opening).

Dear Kalaivanan,

Use Jaeger 1 test chart to meet requirement of both snt-tc and cp-189.

 
 Reply 
 

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