Interested to Buy Any Domain ? << Click Here >> for more details...
Dear friends, I have a question:
We work on a project which has some boilers to provide steam
for desalination unit.
The boiler area is safe and the only hazard source is the
fuel lines of boilers.
I want to know according to NFPA standard which type of
instrument should be selected on the fuel line: Eex Type or
Non-Eex type?
Thanks in advance
- 2 Answers
- 4764 Views
- I also Faced
- E-Mail Answers
Answer Posted / carl_ellis
I totally disagree. Because NFPA 86 (2007) specifically
states that there is no need to impose requirements for
wiring methods appropriate for a hazardous (classified
area).
------- NFPA 86 (2007) ------------
A.4.1.3.3 Unless otherwise required by the local
environment, ovens and furnaces and the surrounding area
are not classified as a hazardous (classified) location.
The primary source of ignition associated with an oven
installation is the oven heating system or equipment or
materials heated. The presence of these ignition sources
precludes the need for imposing requirements for wiring
methods appropriate for a hazardous (classified) location.
Refer to Section 3.3 of NFPA497, Recommended Practice for
the Classification of Flammable Liquids, Gases, or Vapors
and of Hazardous (Classified) Locations for Electrical
Installations in Chemical Process Areas, and Section 3.3
------------ end ---------------
The 'gas train' or 'fuel train' is a pipe carrying fuel.
It is assumed that the fuel stays in the pipe until it gets
to the burner or is bypassed to an equally secure pilot
fuel line.
Control components in the pipeline typically need agency
approvals for conformance to failsafe conditions, but not
for explosion protection.
Carl Ellis
Measure First
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
Can anyone convert a 5/2 way or 3/2 way valve into an ISO valve?
what is sliding spool valves?
what is the difference between scaler and vector drive
Why all the drains(Gland sealing,ESV,Casing inlet etc) are directly connected to the flash tank instead of hotwell of the condensor in the power plant? My Email Id:naba02222@gmail.com
how many type conductivity sensor ?
Any body have know try work calculation ???
i want to know the interview format fot gail, instrumentation. pls answer me in habib.sami1003@gmail.com
in mass flow meter what is drive friquancy ?
god evening sir i am studying m.sc(tech)electronics &instrumention.am i elegible to all industies
Why we are using reverse action in displacer types level transmitters on some Vessels?
what is difference between fork type and capacitance type level switch. where it is using
what is moisture probe? What are there types? What is there working principle and how they works? guys this is one of technical question I had ask in interview. If you know its answer please let me know. The interviewers were more interested in microwave moisture probe, so if you find its any link please just forward me on my mail id.avinash1200@gmail.com Thanks in advance.
What is heating effect?
How to regulate the flow of Air in 4" line, with max flow of 330 nm3/hr and Pressure of 0.5 bar? please suggest the type of instrument required.
How will you calibrate an Absolute Pr.Transmitter of range 400mmHg absolute ?
