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- since 1996 -

Sonotron NDT
Original developer and manufacturer of advanced ultrasonic instruments

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Technical Discussions
richeng
NDT Inspector,
P&W SHANGHAI ENGINE CENTER, China, Joined Mar 2009, 6

richeng

NDT Inspector,
P&W SHANGHAI ENGINE CENTER,
China,
Joined Mar 2009
6
09:31 Mar-19-2009
FPI

HI EVERYONE,

I HAVE A QUESTION :WHAT IS THE DIFFERENCE ABOUT FPI(FLUORESCENT PENETRANT INSPECTION) SENSITIVITY HIGH LEVEL AND MIDDLE LEVEL ON SITE.NORMALLY,THERE IS ONLY 3 SENSITIVITY LEVELS,BUT NO HIGH LEVEL.

BY THE WAY,I WORK IN AN AERO ENGINE MAINTENANCE FIRM,I DON'T KNOW IF IT WILL HAPPEN ON YOUR SITE?

THANKS!

    
 
 
Michel Couture
NDT Inspector,
consultant, Canada, Joined Sep 2006, 829

Michel Couture

NDT Inspector,
consultant,
Canada,
Joined Sep 2006
829
16:04 Mar-19-2009
Re: FPI
In Reply to richeng at 09:31 Mar-19-2009 (Opening).

Richeng,

Their has been 5 Level of Fluorescent Penentrant Sensitivity for at least 15 years. ASTM (probably revised since) stated it in E1417-99 paragraph 5.1.3. When I was still in the Air Force, we used Level 4 Penetrant. It was felt the results sought were critical.

    
 
 
Navita Gupta
Navita Gupta
08:50 Mar-21-2009
Re: FPI
In Reply to Michel Couture at 16:04 Mar-19-2009 .

Hi all the penetrants are technically available in 5 different sensitivity levels viz: level-1/2: ultra low sensitivity, level-1: low sensitivity, level-2: medium sensitivity, level-3: high sensitivity and level-4: ultra high sensitivity. Refer to your aircdraft maintenance manual and find out which sensitivity level is needed. Generally it is Level3 or 4 in the aviation industry. Your approved manufacturer may be of some help. Regards

    
 
 

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