Is it permissible to work momentarily (time – 50 ÷100 ms) on parallel switchgear feeders (level voltage 10kV) when during this work the initial short circuit current is 35% higher then the initial short circuit current of switchgear. Time given above is necessary to change over between feeders...
I would like to ask what is a typical solution and good engineering practice for K.O. drum discharging pumps for flare system I mean if one pump instead of two (A/B) can be a reliable solution? If so when it can be used, what kind of safeguards shall be added?
Dear Sirs,
We have designed column of 70 meters height acc. to AD S3 codes.
We have a problem with interpretation of wind load calculation results because all critical speeds are less than 25 m/s.
Microprotol software has generated following message:
The calculation due to perpendicular actions...
1. Please tell us what kind of experience you have in the matter of reliability in use of ignition units: high voltage and low voltage. Which one of them are preferable taking into account difficult climate conditions – high humidity, rains etc. What is the difference in cost above-mentioned...
Dear Sirs,
Could you give us any information how we may determine the dimentions of fire zones for petrochemical and rafinery plants, on which standard we may based our calculation for fire resistance for vessels. Our question is not concern to explosive zones but to fire zones.
On our plant we...
