Boroscopy examination.

Date 12-07-2005 21:32

Have anybody experience using boroscope for internal inspection from non inertizated vessel ??
Is this a risky practice ??
I have heard about an explosion in Colombia using boroscopy in a vessel in that condition.
Boroscope manufacturers don´t say anything about that.

By gsi

Date 12-09-2005 15:12

what is non inertizated?

By G.S.Crisi (****)

Date 12-09-2005 18:09

Inertizated means that the vessel interior has been filled with an "intert" gas such as dry nitrogen.
Of course, nitrogen is not a chemically inert gas and hence the production of NOx in combustion processes.
The word "inert" in this case means that combustion is not possible in a pure nitrogen atmosphere, and that as oxygen and moisture are absent, since the nitrogen is pure and dry, the rusting of the vessel surface is prevented.
Am I right, José?
Giovanni S. Crisi
Sao Paulo - Brazil

By JCaprarulo (**)

Date 12-09-2005 21:34

OK Giovanni.
Nitrogen helps to eliminate explosive mix due to oxigen inside the vessel.

By RBeldyk (**)

Date 12-09-2005 16:26

The use of borescopes for inspection of non-inertizated vessels depends on the products, including corrosion products, and trace material within the vessel. For example, if any of the material in the vessel is pyrophoric, such as FeO, then the use of a borescope on non-inertizated vessels is not recommended.