Page 2 of 2 FirstFirst 12
Results 16 to 27 of 27

Thread: Okay how do I do this one?

  1. #16
    Senior Member Tiny's Avatar
    Join Date
    Jan 2010
    Location
    In The Ozone
    Posts
    1,094
    Need to CYA , who is going to issue the confined space permit . Who is going to provide or even operate the equipment to see is the air is safe . Most water has chlorine ,that may be a problem
    I Have My Grand Daughter Exactly Where She wants Me

  2. #17
    Senior Member
    Join Date
    Mar 2006
    Location
    Cincinnati, OH
    Posts
    736
    Quote Originally Posted by Scrub Puller View Post
    Yair . . . Umm, why would the fill pipe go in the top of the tank any way?

    There must be a reason but I can't figure out what.

    Why is this, does anyone know?

    Cheers.
    With the pipe going in from the top it will create a air gap so there will be no way for a siphon to start. Also, if you put the fill pipe on the bottom and you get a leak in it you could be looking at massive quantities of water trying to/or will be getting out.
    There's a difference between reading and comprehension.

    Reading means just that you read it and when you answer it'll probably make no sense.

    Comprehension means you actually understood what it said and when you answer it'll probably be on subject.

  3. #18
    Senior Member Tiny's Avatar
    Join Date
    Jan 2010
    Location
    In The Ozone
    Posts
    1,094
    Quote Originally Posted by 95zIV View Post
    With the pipe going in from the top it will create a air gap so there will be no way for a siphon to start. Also, if you put the fill pipe on the bottom and you get a leak in it you could be looking at massive quantities of water trying to/or will be getting out.
    That's how it was explained by one water dept employee , Easier on the pumps and once water leaves the pressurized system they don't want a chance that something in a non pressure storage tank could contaminant the entire system
    I Have My Grand Daughter Exactly Where She wants Me

  4. #19
    Senior Member
    Join Date
    Mar 2009
    Location
    Gladstone Queensland Australia
    Posts
    1,600
    Yair . . . 95zIV. Those two reasons you mentioned are the only ones that I could bring to mind . . . there are probably other factors at play here but on a normal installation neither of them are legitimate concerns.

    I would suggest that filling into the bottom of the tank with a check (oneway) valve is normally a better design option . . . and a LOT simpler in this case.

    With top fill there are factors of splash and oxygenation and what all but we won't go there

    I have seen a case where a "professionaly" designed system utilised two 90 mill poly pipes to a one hundred thousand gallon installation on top of an escarpment . . . one came out the bottom for delivery and one went in the top to fill???

    We are talking an extra half a mile of 90 mill. pipe for no advantage.

    Cheers.

  5. #20
    Senior Member
    Join Date
    Mar 2009
    Location
    Gladstone Queensland Australia
    Posts
    1,600
    Yair . . . oops! Tiny was quicker on the trigger, I was typing while he posted.

    I'll get back about the pump thing later unless some one beats me to it.

    Cheers.

  6. #21
    Senior Member heavylift's Avatar
    Join Date
    Sep 2009
    Location
    KS
    Posts
    1,045
    the scaffolding could be built from the top down on the inside. just give the dimensions of the tank to a scaffold company. they will design a system to meet your needs.
    I used to build scaffolding about 30 years ago. the tube lock scaffolding can be built into about any shape you want..

    Tube lock pipe starts a 4 feet in length.
    ________________

    as mentioned you will need to ventilate and monitor the air

  7. #22
    Senior Member
    Join Date
    Apr 2009
    Location
    Dunnville, Ontario, Canada
    Posts
    964
    Quote Originally Posted by Hard Nocks View Post
    Tell them they are going to have to lay the tank down... If they don't actually have to do it, the look on their face will be priceless!


    That's the way to play ball right there!
    No good deed goes unpunished....
    Things have been going great since we redefined success as slowing the rate of failure.
    Education's expensive no matter how you get it.
    You can get it right or you can get it now, but you can't get it right now.
    You can get any two of good, fast, and cheap.


    '05 CAT 257B, '97 JCB 215S3, '07 VOLVO EC240B, '08 Ram 5500 6.7, '07 RAM 3500 5.9 Dually, '06 Trailtech 27+5' tandem dually
    '02 CAT D5G , '06 CAT D6R III LGP with Tile plow, Trimble water management , Ocalla Excavision II

  8. #23
    Senior Member
    Join Date
    Mar 2009
    Location
    sw missouri
    Posts
    110
    So I finally got a chance yesterday to look at the tank. Thanks for all the responses guys, I really appreciate it. I'm not the contractor, I'm just providing the crane to lift the pipe up, but the welder doing the pipe work, just calls me and says "hey, how we gonna do this?" I just charge by the hour while I'm there with the crane.

    The tank is actually closer to 80' tall (by my rusty trusty eyeball), and the pipe we're replacing is actually the overflow pipe. If they are pumping into the tank, and the shut offs don't work, this releases the water back out of the tank onto the ground. The tanks get inspected as public water systems, and if the pipe is rusty, it needs to go. The bad part is the inside inspection and painting of the tank. I'm sure they scaffolded it when they built it years ago, but they're gonna have a fit on what it will cost now.

    The ladder starts about 30' up the side-no cage- no rest platforms-so I didn't climb it to look for roof hatches, but from a distance I can see no hatches directly above the overflow pipe. The one picture shows the bottom access hole, thats my 2AA mag lite setting on it for a reference of size. I don't think my 11year old boy could fit through it. In the third picture, the pipe we're replacing is on the right, the ladder is on the left.

    Its also kind of handy having the power lines close for working. Thanks for the confined space comments too Tiny- that had slipped my mind also.

    I think the best option right now is welding/installing a new 3'x3' roof access hatch right above the overflow. Weld it in first, replace pipe, manbasket through hatch to inspect welds and paint, and paint underside of new hatch from on the roof.

    Name:  truck crane pics 002 (640x480).jpg
Views: 357
Size:  220.3 KB


    Name:  truck crane pics 003 (640x480).jpg
Views: 344
Size:  219.9 KB


    Name:  truck crane pics 006 (640x480).jpg
Views: 356
Size:  159.1 KB


    Name:  truck crane pics 008 (640x480).jpg
Views: 343
Size:  209.0 KB

  9. #24
    Senior Member joispoi's Avatar
    Join Date
    Mar 2008
    Location
    Drifter
    Posts
    1,042
    Tiny, that's a great observation about the confined space. Not the best place to use can of krylon.
    "You can't have 'no' in your heart." - Joe Dirt

  10. #25
    Senior Member heavylift's Avatar
    Join Date
    Sep 2009
    Location
    KS
    Posts
    1,045
    google the tanks address, you will get an overhead view of the tank. no need to climb the ladder

  11. #26
    Member
    Join Date
    Jan 2010
    Location
    s.e. michigan
    Posts
    39
    Call the inspector and ask how He intends to inspect the weld and paint.

  12. #27
    Senior Member classictruckman's Avatar
    Join Date
    Jan 2010
    Location
    Ottawa Valley Ontario, Canada
    Posts
    202
    How about an arborist saddle? Osha just approved the use of a crane to hoist a tree climber, I would think if you followed the standards you'd be okay.

    If you're interested send me an email and I send you a copy of the standards.
    Red Seal Crane Operator
    ISA Certified Arborist
    www.treedoctor.ca

Page 2 of 2 FirstFirst 12

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •