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Recent content by colonelbogart

  1. colonelbogart

    leak testing diesel pipeline

    Dear All, We have burried pipelines for diesel from our tank farm to different daytanks (boiler, gen sets et. Our EMS auditor want us to conduct leak testing of these pipelines in pre-determined frequency. What is the best way to leak test diesel pipes? Does nitrogen have negative effect on...
  2. colonelbogart

    adding new oil to transformer

    Dear all, We have a leaking transformer and we are planning to repair it but since we need to fill more silicon oil can we just add any transformer silicon oil to existing? Thank you. Bogart
  3. colonelbogart

    Blast freeezing of sausage in corrugated board

    Can some one help me to compute heat load difference between blast freezing in a corrugated board and in open crates? initial temp of product is 4 c and final temp would be -12 c. Carton size is .3 x .2 x.15 mtrs. At present we can reach the -12 temp of product using carton in 24 hours. Our...
  4. colonelbogart

    refrigeration costing

    Hi everybody, I am an electrical engineer tasked by our company to head our "ENERCON" team (energy conservation) We are implementing measures to save power and 60% of our energy consumption goes to refrigeration. How can I quantify costs or savings of say closing and opening of doors (between...
  5. colonelbogart

    MV capbank & MV softstarters

    Thanks for your valuable suggestions...Probably we will just live with what we have now. Budget cannot be justified...
  6. colonelbogart

    leaking transformer

    Thanks for your suggestion K2ofKeyLargo
  7. colonelbogart

    sound from -40¦C surge drum

    Hello guys... In our meat processing company we operate ammonia refrigeration system. We have surge drums for 0°C, -5°, -15°, -27° system and -40°C system (used for blast freezing)... We experienced (hearing) a very loud sound (like bang) on the surge drum. we're suspecting it as hammering...
  8. colonelbogart

    MV capbank & MV softstarters

    Need some advice... We have 4160V MCC serving 1-650kW, 2-310kW and 5-460kW motors driving screw compressors for refrigeration system. All motors are dol 1. There are some suggestions to install softstarters for these though we did operate for almost 2 years now w/o problem. 2. The overall...
  9. colonelbogart

    leaking transformer

    Thank you wbd for the link. Probably I can use those support grips in tandem with my braided copper conductor unless there are still more suggestions out there... Presently the level is still OK... we're just allowing oil to leak coz if we will try to tighten the bushings we will spill oil also...
  10. colonelbogart

    leaking transformer

    I wish to know more details about strain relief (Kellom Grips)...might apply it. The leak is something about 2 to 3 drops per minute?! not very sure though... Braided copper conductor is like a flexible conductor composed of smaller copper conducters woven together (braided). In this manner...
  11. colonelbogart

    leaking transformer

    we have 2-MVA power transformer 4160/480V. 7-325mm2 cables per phase were connected on its secondary bushings. The cables' connections applies some pressures on the bushings causing transformer oil to leak. I am planning to intall braided copper conductor on its secondary bushings to relieved...
  12. colonelbogart

    toasted capacitor

    Hi there, more details: most of the busted caps, as in the caps bursts or swells, are coming from those installed on 4°C to 10°C temp. I dont remember toasted one from below zero areas. But since our company is intensifying its drive on energy conservation we did some 10 to 12 hours shutdown...
  13. colonelbogart

    3 phase heater

    its a 2kwatts heater(s) rated 440 V but our system is 480V . our control voltage is 240V 1 phase using trans. the contractor as we discovered lately uses this control voltage instread of wiring an independent one for heaters. as i understand the actual is a series of 1 heater and 2 heaters in...
  14. colonelbogart

    toasted capacitor

    Our plant uses a lot of metal halide lightings. 400 watts cooper. The lightings are installed inside the production area which temperatures varies from 4°C to 10°C with some on -18°C area. We are conducting a weekly shut off of the lightings as long as we can (other areas are not possible). I...
  15. colonelbogart

    3 phase heater

    WE have a 3 phase heater used for heating oil for 650kWatts compressor (for ammonia in refrigeration). The heater is 3 phase but the compressor installer wired the heater using single phase splitting one wire to wire all of the 3 phases. and instead of 440V they used 240V... What will be the...
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