French (Fr)English (United Kingdom)

DPC NEWS: a website dedicated to Penetrant Testing and Magnetic Testing

DPC

Search

mod_vvisit_countermod_vvisit_countermod_vvisit_countermod_vvisit_countermod_vvisit_countermod_vvisit_countermod_vvisit_countermod_vvisit_counter
visits on site since April 2008

Log in

DPCNews


Receive HTML?

DPCNews 067 - The inventor of the hydrophilic emulsifier | Electrostatic spraying and penetrant testing: good practice |Water as a colour contrast penetrant

Print
E-mail
Written by Dubosc
Monday, 24 March 2014 12:35

In the front page this month | June - July 2014

[EDITO] : Who did invent the hydrophilic emulsifier?

[NEWS] : Guide to good practice for the manual electrostatic spraying of PT materials

[OLDIES BUT GOODIES] : A very pure, renowned French still spring-water as a colour contrast penetrant

EDITO

Who did invent the hydrophilic emulsifier?
We have not been able to identify the true inventor of the hydrophilic emulsifier, and many are those, especially the elders of the NDT world whom we interviewed, who have failed to solve this mystery. One of us credits Norman Henry HYAM(1) with this invention, the other one to an engineer of the aircraft engines manufacturer Rolls-Royce Limited.
Can someone help us solve this mystery?
Read more

NEWS

Guide to good practice for the manual electrostatic spraying of PT materials
The electrostatic spraying (ESS) application of the penetrant materials is derived from that of paints.
Though this technique is not new, some aerospace engineers told us they were concerned because some operators do not use it as it should. This is why they asked us to write a kind of good practice guide on this topic.

OLDIES BUT GOODIES

A very pure, renowned French still spring-water as a colour contrast penetrant
In the late '70s/beginning '80s in France, the nuclear industry was at full speed: up to six power plants commissioned every year!
In October '78 two very important companies involved in this area issued a new specification dealing with penetrant testing. This specification required, among other points, that the materials' fluorine + chlorine content on one hand and sulphur content on the other hand be 200 ppm (parts per million or 0.02 %) by weight maximum when analysed as per a specific method - not the "evaporation and extract analysis" one, as described in the ASME code.
Read More

[VOTRE AVIS] NOUS INTÉRESSE !
Nous, Pierre CHEMIN et Patrick DUBOSC, accueillons tout commentaire, toute idée.
Si vous avez quelques exemples que vous souhaiteriez voir discutés ici, n'hésitez pas à nous fournir toutes les indications utiles. Nous nous engageons à respecter les règles de confidentialité en modifiant les lieux, noms et quelques paramètres pour empêcher l'identification de la source d’information.
Néanmoins, nous sommes convaincus que notre site peut être une sorte de soupape de sécurité : le but N'EST PAS de viser telle ou telle Société, ou tel ou tel auditeur ; mais c’est toujours afin que les utilisateurs réfléchissent et se posent des questions, les vraies, à eux et aux autres.
Nous pouvons également fournir un conseil, là encore, à titre confidentiel si nécessaire, n'hésitez pas, s’il vous plaît, à nous poser des questions, pour alimenter notre base de données, concernant : les Fiches de Données de Sécurité (FDS), l'environnement, un nom chimique que vous ne comprenez pas, une gamme de ressuage dont vous avez entendu parler, etc. Nous avons une multitude d'exemples, certains ne figurant dans aucune spécification / norme, qui permettent la détection de discontinuités, lorsque "les procédés courants ou habituels" ne permettent pas la détection de ces discontinuités.

Contactez-nous

Last Updated ( Saturday, 27 September 2014 14:29 )