Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  • Users: bobziva
  • Content: Threads
  • Order by date
  1. bobziva

    I DON'T WANT TO APPROVE . . .

    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...
  2. bobziva

    GENERAL PURPOSE EQUIPMENT INSIDE HAZARDOUS ZONE

    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...
  3. bobziva

    GENERAL PURPOSE EQUIPMENT IN HAZARDOUS AREA

    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...
  4. bobziva

    HOW FAR MUST BE POWER CABLE FROM THE BENZENE LINE

    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...
  5. bobziva

    ABANDONED BENZENE PIPELINE AS CABLE CONDUIT

    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...
  6. bobziva

    GROUNDING CALCULATION

    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...
  7. bobziva

    EXISTING GROUNDING - N EW GROUNDING

    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...
  8. bobziva

    AREA CLASSIFICATION - Hydrogen Ventilation

    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 ...
  9. bobziva

    HYDROCARBON ANALYZER - IS IT HAZARDOUS AREA DEVICE ?

    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...
  10. bobziva

    HYDROCARBON ANALYZER - HAZARDOUS AREA CLASSIFICATION

    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...
  11. bobziva

    IEEE 841 SQUIRREL CAGE INDUCTION MOTOR

    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...
  12. bobziva

    DID YOU EVER WORK WITH HEAVY MOTORS - AS 4160 kV 900 HP

    Did you ever work with heavy motors such as 4160 Volts, 900 HP. Specially what I need, are info about specification of this equipment. Also info about starters and protective relaying are welcome.
  13. bobziva

    ARCHITECTURAL ENGINEERING FORUM

    Last couple months I am member of this FORUM and I am fascinated by the quality of this WEB SIDE. Question : How to find a similar FORUM for Architects, specialized for buildings etc.
  14. bobziva

    Electrical Rack a couple meters from the Benzene Line

    We started a project with an idea to install explosion-proof electrical rack, for small power distribution (with min.C.B.'s or fuses) close to the existing benzene line ( distance, d=15 feet - from flanges)and new benzene line (distance, d1=21 feet from flanges and control valves). Now customer...
  15. bobziva

    BENZENE LINE - UNCLASSIFIED HAZARDOUS ZONE

    The idea was to install explosion-proof electrical rack, for small power distribution (with min.C.B.'s or fuses) close to the existing benzene line ( distance, d=15 feet )and new benzene line (distance, d1=21 feet). Now customer want unclassified electrical panel,( non explosion-proof)...
  16. bobziva

    L.V FUSES IN HAZARDOUS ZONE - ZONE 2

    The client is trying to install switching devices ( fuses)in hazardous zone - zone 2, what is not acceptable to me. The distribution voltage is 240V. They are trying to explain that encapsuled device (fuse) can be acceptable solution. a) I didn't find proper manufacturer making this product in...
  17. bobziva

    Line Voltage Conditioner

    I have to provide a Line Voltage Conditioners to be installed in HAZARDOUS ZONES expecting Division2 products. (1) I need information about any manufacturer making these products. In many cases epoxy encased transformers, can be good for the Div.2 hazardous zones, but here the situation is much...
  18. bobziva

    SHORT CIRCUITS CALCULATION SOFTWARE

    The price of the Short Circuits Calculation Softwares depends from many reasons, first of all from the number of the buses ( 100.000 buses can not be the same as 100 buses). THAT is what I need a small software for SHORT CIRCUITS ANALYSIS for 100- 200 buses. How I can find this software ??? Thanks.
  19. bobziva

    DID YOU MAKE GROUNDING OF ANTENNA COMMUNICATION Tower

    Did you make Grounding of Antenna Communication Towers ? As Electrical Power Engineer I have to work on this package, but not informed about that field. Any internet link is welcome. I heard for Motorola Handbook R56. How to find this materials ?
  20. bobziva

    Protection of Communication Tower - HOW ?

    The Communication Tower ( 80 ft) must be grounded and protected from the lightning. Is it the same as for the building ? What about 230 kV transmission line passing close to the tower. How far it can be ? Tnank you for the help. Any text on the internet ?

Part and Inventory Search

Back
Top