Non-metalic equipment installed in Hazrdeous areaNon-metalic equipment installed in Hazrdeous area

Non-metalic equipment installed in Hazrdeous area

Addyot Phanasgaonkar
Addyot Phanasgaonkar

Hi,

  We have a pneumatic panle installed in Zone 2 area. The panel has a flexible pneumatic hose simiar to the one in the link below.

https://www.cejn.com/products/pneumatics/hose/series-958-spiral-hose/

The MOC if the hose as given as

Hose material:

FDA approved, Ester-based polyurethane

Does this require any Ex-certification to be used in hazrdeous area? Does it need to be anti-static? If there is not much flow through the hose will be develop much static sufficient to generate a spark?

Thanks in advance.

Re: Non-metalic equipment installed in Hazrdeou...

Re: Non-metalic equipment installed in Hazrdeou...
Sverre Isaksen
Forumleder

Hi,

According to EN ISO 80079-36:2016 Annex F, air flow is not listed as a electrostatic charge mechanism, like manual rubbing, streaming liquids or particles.

As the hose can be subject to manual rubbing, the requirements of non conductive materials in IEC 60079-14:2016 pt. 6.5.2 b) and table 6 gives maximum diameter or width of non-conductive tubes. In Zone 2 (EPL Gc) the maximum diameter value for IIA and IIB gases is 30 mm. So if the hose has a smaller diameter than this, it does not need to be of conductive material.

Re: Non-metalic equipment installed in Hazrdeou...

Addyot Phanasgonkar
Addyot Phanasgonkar

Thanks for the detailed answer that clarifies the issue.

Jobbe i Trainor?

Trainor AS fraskriver seg ethvert ansvar for hendelser og skader, herunder følgeskader som måtte oppstå som følge av feiltolking av innholdet i eller feil i innholdet i dette fagforumet eller i de interaktive kurs det er forbindelse til.

Vi beklager! Trainor.no støtter dessverre ikke lenger eldre versjoner av Internet Explorer.

Oppgrader til en nyere versjon her eller bytt nettleser, feks. til Google Chrome.

For mer informasjon eller hjelp, kontakt oss.

Trainor behandler personopplysninger og benytter cookies. Les mer her.
nor