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Technical Discussions
Andrea Steen
, Joined ,
00:52 Jun-27-2000
PT Marker

Does anyone know of a marker (preferably pencil) which will fluoresce and is low in sulpher? We have tried the high purity felt tipped markers but: #1 they don't fluoresce, #2 if the tip is depressed a bit too long they create quite a mess and #3 the ink comes off the part too readily with solvent when checking indications. Any information will be much appreciated.

Andrea Steen
NDT Engineer/Level III
Rolls-Royce Corporation


    
 
 Reply 
 
Andrea Steen
, Joined ,
06:17 Jun-28-2000
Re: PT Marker

: Does anyone know of a marker (preferably pencil) which will fluoresce and is low in sulphur? We have tried the high purity felt tipped markers but: #1 they don't fluoresce, #2 if the tip is depressed a bit too long they create quite a mess and #3 the ink comes off the part too readily with solvent when checking indications. Any information will be much appreciated.

: Andrea Steen
: NDT Engineer/Level III
: Rolls-Royce Corporation

After discussing this with my co-workers, we would also be satisfied if we could find a marker (pencil) which would be low in sulfur and stay on a part in the presence of a solvent. We can live without the fluorescence.


    
 
 Reply 
 
Dent McIntyre
Consultant, NDE Manager NDELevel III/3
NDT Consultant, Canada, Joined Nov 1998, 248

Dent McIntyre

Consultant, NDE Manager NDELevel III/3
NDT Consultant,
Canada,
Joined Nov 1998
248
06:29 Jun-28-2000
Re: PT Marker
We use a Markal Paint stick with the end sharpened with a knife and use it to mark underwater when doing a UT immersion test. When you remove it from the water the paint dries and will remain.
This might work for your application.

Does anyone know of a marker (preferably pencil) which will fluoresce and is low in sulphur? We have tried the high purity felt tipped markers but: #1 they don't fluoresce, #2 if the tip is depressed a bit too long they create quite a mess and #3 the ink comes off the part too readily with solvent when checking indications. Any information will be much appreciated.

: : Andrea Steen
: : NDT Engineer/Level III
: : Rolls-Royce Corporation

: After discussing this with my co-workers, we would also be satisfied if we could find a marker (pencil) which would be low in sulfur and stay on a part in the presence of a solvent. We can live without the fluorescence.




    
 
 Reply 
 
Thomas Murphy
NDT Inspector
USA, Joined Jul 2000, 16

Thomas Murphy

NDT Inspector
USA,
Joined Jul 2000
16
03:10 Jul-25-2000
Re: PT Marker
Hello,

We use a red Berol 165T china marker. It fluoresces and is not readily removed by de-natured alcohol. It can readily be removed with mineral spirits. It is one of the approved markers for pre-service inspection of compressor components in a combustion turbine. However, I cannot attest to the Sulfur content.

Regards,
Tom

: We use a Markal Paint stick with the end sharpened with a knife and use it to mark underwater when doing a UT immersion test. When you remove it from the water the paint dries and will remain.
: This might work for your application.

: Does anyone know of a marker (preferably pencil) which will fluoresce and is low in sulphur? We have tried the high purity felt tipped markers but: #1 they don't fluoresce, #2 if the tip is depressed a bit too long they create quite a mess and #3 the ink comes off the part too readily with solvent when checking indications. Any information will be much appreciated.

: : : Andrea Steen
: : : NDT Engineer/Level III
: : : Rolls-Royce Corporation

: : After discussing this with my co-workers, we would also be satisfied if we could find a marker (pencil) which would be low in sulfur and stay on a part in the presence of a solvent. We can live without the fluorescence.




    
 
 Reply 
 
dave ronson
dave ronson
07:16 Nov-06-2000
Re: PT Marker
: Hello,

: We use a red Berol 165T china marker. It fluoresces and is not readily removed by de-ntured alcohol. It can readily be removed with mineral spirits. It is one of the approved markers for pre-service inspection of compressor components in a combustion turbine. However, I cannot attest to the Sulfur content.

: Regards,
: Tom

: : We use a Markal Paint stick with the end sharpened with a knife and use it to mark underwater when doing a UT immersion test. When you remove it from the water the paint dries and will remain.
: : This might work for your application.

: : Does anyone know of a marker (preferably pencil) which will fluoresce and is low in sulphur? We have tried the high purity felt tipped markers but: #1 they don't fluoresce, #2 if the tip is depressed a bit too long they create quite a mess and #3 the ink comes off the part too readily with solvent when checking indications. Any information will be much appreciated.

: : : : Andrea Steen
: : : : NDT Engineer/Level III
: : : : Rolls-Royce Corporation

: : : After discussing this with my co-workers, we would also be satisfied if we could find a marker (pencil) which would be low in sulfur and stay on a part in the presence of a solvent. We can live without the fluorescence.

We have found Sanford Corp. #02435 Orange pencilworks great for FPI and MPI.



    
 
 Reply 
 

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