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  • Users: ruble3
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  1. ruble3

    Atmospheric tank

    I'm a little out of my element here and there is no-one on site to ask (i.e. no qualified person) -looking through info on API 650, API 2000 etc, what governs alterations to a tank, 9 metres high, 9 metres diamter that conatins a slurry ( non flammable. non toxic etc)? - there is a manhole for...
  2. ruble3

    butterfly valves for compressed air

    We regularly use Vic butterfly valves, but recently have had trouble with the larger sizes (10"Vic-300)-using them on compressed air lines- anybody use anything more robust (10', 115 psi, steel pipe)-problem is after a short time finding them very hard to close
  3. ruble3

    Use of Vortex tubes

    I was doing research into 'cooling' systems when I saw vortex tubes- although most of them are quite small, I was wondering if they have any applications for using them to cool a room? I have an abundance of compressed air-would rather not use standard air conditioners(as in a house)- (drop in...
  4. ruble3

    strobe lights and explosives

    Not sure if this is the right forum- we use 12VDC strobe lights on vehicles , but also have electric detonators in use- someone heard throught the grapevine that the capacitors in strobe lights could cause detonation of blasting caps? I guess same theory as radio tramsmitters on construction...
  5. ruble3

    Transformer Oil Analysis -worrisome results

    We recently completed our annual oil analysis on seven transformers- 4 of them showed a significant rise in dissolved gases from last years results. We were somehat baffled because we've never seen a sudden increase like this. Someone then mentioned that several months ago the utility increased...
  6. ruble3

    dry type capacitors

    Does anyone know of a source for 4160v, dry capacitors? We wanted to install capacitors but manufacturer only has oil filled ( these will be us in an underground mine). We could use the oil filled but need to enclose in a vault but there is not enough room in the intended location.(have tried a...
  7. ruble3

    Cone sumps

    We are investigating using cone sumps ( rather than trditional cleanwater/dirty water decant sumps)- the plan is to divert the water to the top of the cone, and clear water decants off to the clean water sump- the 'fines' will settle to the bottom of the cone & will be drawn off into'slime cars'...
  8. ruble3

    propane line in MCC

    Does anyone know of any rule against running a propane line through an electrical room containing motor starters and/or switchgear? (Ontario)
  9. ruble3

    u/g loading station

    We're in the process of planning a new loading station ( conveyor loading transfer car ,measuring bins then into skips)- the current layout had two conveyors because of the orientation of the existing ore/waste passes- to eliminate one belt we asked engineering to look at the layout again- now...
  10. ruble3

    Brake Linings

    I posted this in another forum but maybe you guys can help- I 've been asked to find a way to monitor temperatures on brake linings- I see there's been work done on tractor/trailer brake/wheel systems but are there commercial systems out there ?- my application is somewhat different- the system...
  11. ruble3

    Brake linings on hoists

    Does anyone know of any refernces for monitoring brake lining temperature on hoists? We've been asked to provide constant monitoring since the hoists run from a remote location- we had one instance where a small piece of brake lining became wedged between lining & brake path- created a small...
  12. ruble3

    Aluminum fan blade failures

    Just looking for general comments on a problem we are having with aluminum cast fan blades. Without getting into a lot of fan details, we've had 4 recent failures ( catastrophic) of the blades. Visual inspection of the blades looks like there are large cavities or pockets in the casting (...
  13. ruble3

    Wondering how other places handle h

    Wondering how other places handle human waste? port-a-potties? RBC's ? We are a combination track/trackless- have a honeywagon for track areas but it can't go to trackless areas- suggestions are honeywagon for forklift orscoop forks? composting toilets?
  14. ruble3

    UPs backing up UPS?

    We are undergoing an expansion at our plant - we were discussing the requirements for backing up PLC's (4) with UPS's - our IT guys want to use one large one, other people would prefer a separate one for each PLC - another suggestion if we went to one large one was a UPS backing up a UPS but...
  15. ruble3

    Wooden guides

    Has anyone any experience with pre-engineered wood ( ie Parallam) for wood guides instead of BC Fir? Is it approved for use?
  16. ruble3

    choke valve as PRV

    Just looking for thoughts on using a 'control choke' as a pressure reducing valve- max pressure expected to be 475 psi in and 90 psi out- clean water ( not oil or gas)- the usual PRV's have been a problem & these look to be more robust, although I haven't seen any applications outside the oil &...
  17. ruble3

    Dirty water

    First time I've ever asked for help here- imagine a 'cave' that holds 60,000 gals of dirty water. Cave is divided in two - a 50,000 gal side and 10,000gal side- by a 'weir' extending almost to the ceiling.The fine particles in the water are supposed to settle on the large side and the 11 stage...

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