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  • Users: caluna
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  1. caluna

    Design of facility for Outdoor Fuel Storage (in barrels)

    Hello, One of our client departments stores about 200-45 gal barrels of fuel outside: barrels are aviation fuel, diesel or gasoline, and these barrels are loaded into trucks and taken to various location for use on helicopters, planes and vehicles (used for fire fighting out in the bush)...
  2. caluna

    Conditions for frangible roof

    Hello, Assistance please! I know API 650 Section 3.2.10.6 specifies 6 conditions which must be met, including a limiting diameter of 50 ft. However I do not have copy of API 937 which sounds as if it shows that tanks smaller than 50 ft dia may have franglible roof shell joints under certain...
  3. caluna

    Fuel going thru Air Eliminators

    Fuel leaking thru Air Eliminators at tank farm dispenser bldgs. In several of our installations we have had problems with fuel leaking thru air eliminators. These are small scale dispensing facilities for diesel. We do not have this propblem in every facility, nor can we figure out why it occurs...
  4. caluna

    Thermal prv relieving directly back into petroleum tanks

    At our tank farms we have prv's to relieve towards the tank. The ones closest to the tank, (across the gate valve at tank outlet) are on a bypass line which goes around the gate valve, but both ends of bypass connect to the outlet pipe (ie, one does not go directly into tank) . Any reason we...
  5. caluna

    Masterformat Spec sections for Tank farms?

    Hi, We have standard in-house details and specs for petroluem products (we are a territorial gov't dept but build and maintain community tank farms which contain diesel, gasoline and sometimes Jet A-1 too). We are revising our current editions of our standard specs and wish to go with...
  6. caluna

    ULC S601 horizontal tanks-repads at top of tank

    Hi, I cannot see anything in ULC S601 re repads at top of tank (above liquid level) on sec containment horizontal tank, for openings under 6 in dia. Am I mising something? We have 6 tanks in one job which all got their ULC labels.. but some have repads round 4 inch vent openings at top and some...
  7. caluna

    Design-Build or Construction Management process for Petroleum Tanks

    Just wondering what experience anyone had with design-build or construction management petroleum tank farm construction jobs. We used to put our jobs out as regular design (by consultant) bid, build. Now it seems as some jobs may go out design build in an effort to speed things up. (Our...
  8. caluna

    Integrated Design for Buildings

    Hi, In my department we are supposedly doing integrated design with our building projects. However, I know our methods are not quite "book perfect", and as result we have glitches and delays -mostly due to poor communication and goodness knows what else. We do not do design in-house, but provide...
  9. caluna

    API 653 training and exam study tips?

    Hello, I am taking the API 653 inspector exam training course next month (as there was budget money this fiscal year) but can't take the exam til next September. I realize this may involve studying new codes and stds for next exam if any versions change in next few months. However now I am just...
  10. caluna

    Engineering discipline hearings

    Hello, Re:being on a discipline hearing committee for Engineering Association Is there anyone who could give me some advice or tips on how best to approach this? I have never been on a such a committee before. (Not ever been selected for jury duty!) I have read the extensive background...
  11. caluna

    Thermal PRV settings in tank farms

    Question about settings for our thermal relief PRVs around valves in tank farms. Nornmally we have the PRvs set at 25 psi in the piping and 75 psi at the valve directly off the tank (our tanks are not enormous -max size 460,000 l). The thermal bypass lines go around the valve in all cases-(ie...
  12. caluna

    "How to do the right thing" but not be yelled at?

    Hi, I am puzzled and would like to hear what you think of this situation. Thought I did the "right" (was?) also a close friend. We work on petroleum tank farms and had occasion to be selecting an old tank for re-use as a slop/spare/odds and ends tank in a new facility. This tank would not be...
  13. caluna

    Pump manufacturers for small (500 l/min) fuel transfer pumps

    Loking for a pump: small fuel transfer pump for Jet A-1 fuel: aluminum impeller, 460 l/min @ 23 m head, for single single phase power. I know of Gormann-Rupp but they don't have the pump with aluminum impeller. I have not had much success with Google on this. Thanks
  14. caluna

    impeller material for use with jet A-1 Fuel

    Normaly in our tank farm specs and dispensing specs we call for stainles steel impeller impellers on Jet A-1 pumps but our contarctor can only get brass or cast iron. I can't seem to find anything on which is more compatible and better to use, the brass or CI? Which would be more appropriate...
  15. caluna

    Number of women in engineering

    Hello, just wondering what your take is on this-Why is only a small percent of engineers made up of women? I am writing an article for our PE newsletter. From my viewpoint here, in Canada, as a 1980 mech eng. graduate (female), it looks like that the national average on numbers of women - as...
  16. caluna

    Negative plumbing drain slope in radiant floor slab-on-grade building

    Hi, we have a building (one storey slab on grade, radiant tube infloor-heating,with themosyphons under bldg to keep permafrost frozen ( 68 N latitude). The furthest part of drain line (from exit of building drain line from the building) has shifted. (Plumbing drain lines are run in insulated...
  17. caluna

    Double wall pipe (exterior) for fuel oil

    We (territorial government in Northern Canada ) are starting to ask for all exterior fuel oil piping to be double wall. However I am not too sure whether this is to an existing standard, or in anticipation of future environmental legislation. Could anyone refer me to a standard? Thank you.
  18. caluna

    Emco Wheaton tank valves and gauge hatches

    Hi, Is Emco Wheaton still in business of making tank drain valves(Model C-68), relief valves (Model 0153) and gauge hatches (Models c 56-58)? if so, where may they be obtained? In our latest Standard Spec for Fuel Facilities (1998) we have specified these but lately we are finding no one can...
  19. caluna

    Sizing gas line

    Hi, I am sizing a gas line to several (10) different-size units on rooftop. Some of the rooftops will be operating at a real-life maximum load LESS (say half) that of the standard supplied gas heating capacity. In those cases, may I size the gas line for my anticipated design loads, rather...
  20. caluna

    Reducing

    Hi, I have a project to remove a number of rooftop AC units, with their duct-mounted hot water coils, in order to replace with newer gas-fired units. There is one heating water circuit serving these HW coils, and another circuit, with a much smaller head and flowrate, on same circulating pump...

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