×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

PUMP & INSTRUMENTS ON HAZARDOUS AREA

PUMP & INSTRUMENTS ON HAZARDOUS AREA

PUMP & INSTRUMENTS ON HAZARDOUS AREA

(OP)
Hi guys,

I have an ATEX-rated air operated double diaphragm pump including the air filter regulator and PSV. On the area classification plot plan, it is shown that it is under Cl 1, Div 2. My AODD is fine I believe since it is ATEX rated already. How about the instruments included in this equipment? Is there any such provisions for regulators and relief valves that they can be designed according to this area class? Or is it fine not considering area class for instruments?

PS: These PSV and filter regulator will be on the air line side of the pump.

Thank you in advance,
Virata.

RE: PUMP & INSTRUMENTS ON HAZARDOUS AREA

You only need to look at "instruments" which have some sort of electrical power, unless it is intrinsically safe.

Spring relief valves without sensors are Ok, it then depends on what sensors or controllers you have on the "regulator". Some are wholly pneumatic or self contained, others have 24V sensors and controllers. they need to be suitably certified for the area you are located.

you really need to get this reviewed by a suitable instrument and electrical engineer.

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

RE: PUMP & INSTRUMENTS ON HAZARDOUS AREA

(OP)
Thank you LittleInch and bimr!

RE: PUMP & INSTRUMENTS ON HAZARDOUS AREA

Absolutely right Bimr, both electrical and mechanical equipment within a hazardous area needs to be assessed under the ATEX Directive.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources