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Thank you for your comments. That what I want to do is to approve new changes ( better ventilation system) but the risk still exists, ignition source still exists based on existing equipment not provided for classified area. I found that existing ANALYZER BUILDING is in service, but no stamped...

Analyzer Building, project what I started a some time ago, provides better ventilation system and reduction of classified area from Division 2 Group B to Division 2 Group D. Building is very old with some existing equipment as "general purpose equipment" ( lighting, fans) i.e. with...

Analyzer Building, project what I started a some time ago, provides better ventilation system and reduction of classified area from Division 2 Group B to Division 2 Group D. Building is very old with some existing equipment as "general purpose equipment" ( lighting, fans) i.e. with...

Analyzer Building, project what I started a some time ago, provides better ventilation system and reduction of classified area from Division 2 Group B to Division 2 Group D. Building is very old with some existing equipment as "general purpose equipment" ( lighting, fans) i.e. with...

My first question is given under title : (1) How far must be direct buried power cable from the existing benzene pipeline. My owner is suggesting something what I am not accepting - he want to use abandoned Benzene Pipeline as metal conduit for 600 Volts power cables inside industrial area...

The Owner is preparing to use abandoned Benzene Pipeline as metal conduit for 600 Volts power cables, all inside industrial area.Pipeline is very old, abandoned for many years. I don’t like this idea, but I have to check something : (1) Can we accept abandoned benzene pipeline, cleaned up with...

the reason for your problem is soil resistivity. you have a granite, with high soil resistivity what you didn't expect before . That type of soil need a special grounding procedure, not just to installed more and more ground rods. (example - provide rods more away where is better soil etc.)

Owner is preparing to make new Communication Tower inside Power Plant, too far from any Grounding Grid. Tower must be grounded with 4 ground rods /square layout/. That what must be provided is Ground Resistance R = 5 Ohms minimum. Soil is good - no sand, no stone. If Ground Resistance is R > 5...

R-ed Y-ellow B-lue are letters for high voltage what means that colours are . . . .

Existing dispatching building with 208/120 V and existing communication tower are provided to be upgraded and put into operation. Information about existing grounding doesn't exist and new grounding is provided to be installed (1) four ground rods are provided around building (2) three ground...

Why you want to know that ? Capacitance exists but reactance is much higher and nobody calculate transformer capacitance.

Project provides an installation of a small building where HYDROCARBON ANALYZER has to be installed. Hydrogen has to be used as "fuel" for the HYDROCARBON ANALYZER providing an ionization of the gas samples. Small vent-chimney is installed on the top of the building. MY QUESTION ...

Dear Sirs, Thank you for coments, but I repeat, Hydrocarbon Analyzer is provided to be installed in special room for the monitoring of hydrocarbon contamination. We have to make order for that Hydrocarbon Analyzer, but we have a couple questions : (1) Hydrocarbon Analyzers, available on the...

Dear Sirs, Hydrocarbon Analyzer is provided to be installed in special room for the monitoring of hydrocarbon contamination. We have to make order for that Hydrocarbon Analyzer, but we have a couple questions : (1) Hydrocarbon Analyzers, available on the market,are provided for permanent...

Kiribanda and jbartos. Thank you for comments. Probably you didn't understand my question. (1) area provided for installation of analyzer is non-hazard area but (2) as soon as analyzer is instaled there including a pipe with the liquids containing hydrocarbons, that area becomes hazardous area...

Hydrocarbon Analyzer is it a hazardous area device ? The analyzer is provided to be installed in special room for the monitoring of hydrocarbon contamination. That room is potential hazardous area, and Owner wants to discuss about that. I used to read many prospects / catalogues about...

Hydrocarbon Analyzer is provided to be installed in special room for the monitoring of hydrocarbon contamination. That room is potential hazardous area, and Owner wants to discuss about that. I used to read many prospects / catalogues about hydrocarbon analyzer and manufacturer always stops the...

If Standard IEEE841-2001 is only for intergal motors, not fractional, which IEEE Standard is provided for small fractional motors ? ( If any )

IEEE 841 is Standard for Chemical and Petriochemical Industry.My customer wants to see 3/4 HP motor designed to meet IEEE 841 Standard. One comment sent to me is that 3/4 HP motors are not provided for that standard. Who can tell me is it true or not ? / I do not have here standard / Sincerely...

Ilan7, Thank you for the comments. If you have any detail about "regular" glass fuses filled with sand at the glass, as acceptable fuses in ClassI Div2. , please send to me. You said that you have a letter from manufacturer. Regards Bob bobziva@yahoo.com