Thanks for the responses. I have used the Stop-It wrap on straight pipe with good results but with cracks at bolts it's not applicable. I found another crack in a flange at a bolt today and these pumps and plant itself haven't been run since September and with the valve off there is no pressure...
Hi racookpe1978. It's potable water with influent system pressure coming in at 45psi but the effluent service pumps will run at 55psi but much higher when the pumps first kick on. Same pipe for effluent, backwash and plant water. Right now it's has multiple drips Which makes a mess on the floor...
LittleInch, Thank you for the links. I don't see my town paying for anything mechanical as a fix. I'll try the sealant and then if it doesn't work it falls in their hands.
Thanks bimr. It is a vertical header inside my treatment plant going from my influential/effluent line that leads up to my backwash valve so it's not in the ground. I found one crack to a bolt but with all those years of paint before I got there it's hard to tell where the other drips are coming...
I have a two sections of 10" pipe connected at flanges. The flanges look like they were made on-site when they were put in 35 years ago. One of the flanges developed a crack from one of the bolts. it's at the point where it drips to the floor and Marine-Tex didn't work as it has developed other...
Thanks bimr. After playing around with the equation I see its not a straight forward multiplication problem even though it's written that way. I see it can be calculated two ways. I'm still learning all the conversions but see a lot of equations written as straight multiplication when unless you...
I was calculating out my surface loading rate for my solids contact basin to see if we actually fell within the state regulation on SLR. We did under NJ rule running at 700gpm/1962ft2 = 0.356 gpm/ft2. I decided to go a step further and find out what the settling velocity was but using the...
Where I live the county is replacing a bridge over a creek on one of their roads. The bridge currently holds our water interconnection between the towns on each side as well as a force sewer main and natural gas transmission line. Since the bridge has small marinas on each side the bridge is...
I work for a water company and the town engineers have decided to replace a percentage of DI mains with PVC through a grant program. Since we don't currently have any PVC mains, what are the pros and cons of going with PVC. I just don't see it as strong enough and easily damaged during...
Thanks guys. Where I work it's just an old school mentality and lack of common sense. I am looking into the Competent Person training and the OSHA regulations.
That would be the smart thing to do but unfortunately I don't see that happening. My supervisors don't seem to see the situation they are putting their workers in so I want to gain as much knowledge as possible on my own.
My utility has just started using a small trench box and I saw some issues that I felt weren't safe, are there any good books or DVDs that are available so I can get more information for myself personally?
I have been using Chlorine gas at my treatment plant for almost 25 years and now we may switch to a Calcium Hypochlorite system. Do the same rules for exhaust fans apply for Hypo as they do for gas? Is there a good Chlorine manual available? Thanks.
I mostly work on the water treatment side but am becoming more interested in the collections side. My town is very lax in these things and I won't learn it there. The information I'm looking for is how to calculate loss in gallons day/in/mile during water testing of pipes using a manhole or just...
Great information. Our larger mains are ductile iron (4"-16") and usually the corporations are both direct taps and saddles and the corporations are usually 5/8" to 3/4". Luckily we don't have PVC lines for water only sewer where there have been repairs.
dicksewerrat, do you have a link to information about compression fittings shouldn't be buried? Unless we are putting a flare connection back together we use brass compression fittings exclusively for copper line repairs. Sounds like it would be an interesting read.
Thanks Greggy. It would be used as a temporary quick fix where the corporation was pulled out or the copper line was pulled out at the flare and stopping the flow would allow us to clear out the area to give us room to put a repair clamp on or add a new piece of copper and reflare it.
Thanks, I know the history behind them and where I can purchase them but I was wondering if being hammered in would be enough to keep it in place or if a strap of some type is used along with it.
