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Posted By: leland New to gas stations - 04/09/09 02:27 AM
Hi All!

Got a simple problem and a simple fix.

1 conductor is broken between the JB and the pump.
This conduit 'LBs' out of the building to an EY fitting,then to the pump Manhole. There is an inline fitting,similar to an 'EY' there (just before entering the JB for the pump). Not a problem.

What is the best way to get all the packing and sealant out of these fittings? And re-loading the 'inline' fitting? So as to facilitate a quick easy pull.

This is on the load side of all controls,Pump feed only.

Thanx, Lee
Posted By: renosteinke Re: New to gas stations - 04/09/09 02:50 AM
You need to .... cry laugh

You use a drift pin (long skinny punch or rod) and a hammer to break up the sealant. Sweep / vacuum / blow the bits out, replace all the wires, and replace all the seal materials.

If circumstances permit, you can cut the pipe, instal rated unions, and just replace the seals. complete.

One nice, "un-listed" use for the EY fittings is as a place to add wire lube for your pull.
Posted By: luckyshadow Re: New to gas stations - 04/09/09 03:22 AM
There is no easy way. If the sealant was installed properly there is a real good chance you will damage the conductors in the conduit as you chip out the sealant. I would first try to chip it out and see how much a PITA that is. If that proves to be a pain I would look into listed,approved unions and a new fitting and just cut the conduit pull out the conductors, fix the conduit ,pull in new conductors, and reseal.
Posted By: gfretwell Re: New to gas stations - 04/09/09 03:45 AM
Gee I was waiting to hear a trick wink
Posted By: leland Re: New to gas stations - 04/09/09 03:53 AM
HOLLY CRAP!!!!

If it's that much trouble why don't we require multiple conduits to each location?

So I assume it aint a 'shut down the pumps for 3 hours' deal?

HOLLY CRAP (oops I stated that already)

I got a 'JB' in the building,then an 'LB' down,'EY'. The inline wich-a-ma-callit- and the pump 'JB'.
Maybe 30' Tops!!

A great friends brother (I may add I have not paid for auto repair in 10 yrs).

HOLLY CRAP!!!

There has to be another option than re-pipping,and a total upgrade. This ,I'm sure, is not the first conductor to fail in a filling station.

It is 3/4 conduit with 2-220V ckts. not a problem to pull in ALL new conductors. But why should it become a 'Project'?
Posted By: gfretwell Re: New to gas stations - 04/09/09 04:04 AM
Do you have the tools to thread pipe? If you can get in there you could cut it off and rethread the pipe I suppose. Easier than eating up the driveway to run new pipe.
If you were lucky there would be a coupling below the sealoff.
Posted By: leland Re: New to gas stations - 04/09/09 12:28 PM
I will have them on hand (threaders).
Another thought,to avoid down time. How about if I temp out the pumps with NM? The round box at the pumphead,this way the pumps can still operate.

Only catch,the conduit IS the ground.

Think I'm looking at a regular shut down.
Thanx Guys. Sorry for the 'bone head' dilemma.
Posted By: ghost307 Re: New to gas stations - 04/09/09 02:35 PM
You can do that if you can find NM that's rated for use in a Hazardous environment.

Besides, temporary fixes tend to never get done right. As soon as things are jerry-rigged to run, the urgency to getting the thing fixed correctly just sort of goes away. Just look at some of the 'temporary' horror stories on this board.

Those sealing fittings were not designed to have the stuff chipped out of them, so it's a royal PITA to do that.
I think you're stuck replacing the fitting unless you want to spend a lot of grunt work chipping and vacuuming.
Posted By: EV607797 Re: New to gas stations - 04/09/09 04:44 PM
Maybe you'll get lucky and whoever sealed them first packed the pipe with DuxSeal to keep the compound from running too far into the pipe. I see that around here all the time and it sure makes it easier to break it out.
Posted By: renosteinke Re: New to gas stations - 04/09/09 05:23 PM
Just in case you haven't dealt with this stuff before, here are the main ways Mr.Murphy can complicate things:

1) First, it's not unheard of fo the seals to have never been sealed. Oops! In that case, thank heaven, and simply pull out the bad wires. Then pack the seals properly.

2) Often the fiber dam fails, resulting in the mortar-like sealant running down into the pipe, and setting up in some low spot. Shovel time! You get to dig up the pipe, usually to the first sweep.

3) Other times the rigid pipe will corrode, with flakes of rust or collapsed pipe making a new pull impossible. A related problerm - which might be the cause of your bad wire - is when compacting and paving operations break (or crush) the pipe.

4) Often, there is not enough room between pipes for you to cut or thread the old pipe in place. Again, in that case, you're best served by digging down to the sweep, and working down there.

When you do finally getyour new wires in, do yourself a favor, and pull in a few extras; this will -maybe- save the day in the event another wire goes bad.
Posted By: ghost307 Re: New to gas stations - 04/09/09 07:38 PM
Extra wires are a great idea for heading off just this type of problem.

Just remember to watch your fill ratio.
Standard wire fill in conduit is 40%, but the maximum wire fill in sealing fittings is only 25%.
Posted By: leland Re: New to gas stations - 04/09/09 11:11 PM
[quote=ghost307]You can do that if you can find NM that's rated for use in a Hazardous environment.

Besides, temporary fixes tend to never get done right. As soon as things are jerry-rigged to run, the urgency to getting the thing fixed correctly just sort of goes away. Just look at some of the 'temporary' horror stories on this board.

Those sealing fittings were not designed to have the stuff chipped out of them, so it's a royal PITA to do that.

My idea (NM) was not long term, only working time.

"1) First, it's not unheard of fo the seals to have never been sealed. Oops! In that case, thank heaven, and simply pull out the bad wires. Then pack the seals properly.

2) Often the fiber dam fails, resulting in the mortar-like sealant running down into the pipe, and setting up in some low spot. Shovel time! You get to dig up the pipe, usually to the first sweep.

3) Other times the rigid pipe will corrode, with flakes of rust or collapsed pipe making a new pull impossible. A related problerm - which might be the cause of your bad wire - is when compacting and paving operations break (or crush) the pipe.

4) Often, there is not enough room between pipes for you to cut or thread the old pipe in place. Again, in that case, you're best served by digging down to the sweep, and working down there."

All of the above.

So just in case, I wimped out.
Told him my insurance doesn't cover gas facilities.

Four tanks and the conduit as ground,kinda swayed me,I knew it would get more involved, the broken pipe scenario,He would pressure me to hack it in. So,Let a stranger be the bad guy.

Trying to save a relationship as well. I'll keep my work inside the building.

Besides,His brothers place is my main garage.

Thanx for the insite.
Posted By: HotLine1 Re: New to gas stations - 04/09/09 11:46 PM
Lee:
IMHO, leave the dispensers to the 'guys' that do them always.

No offense intended to you or the others, but....Article 514 locations are best left to those that do them regularly.

Posted By: leland Re: New to gas stations - 04/10/09 04:21 AM
Originally Posted by HotLine1
Lee:
IMHO, leave the dispensers to the 'guys' that do them always.

No offense intended to you or the others, but....Article 514 locations are best left to those that do them regularly.



I hear you 'Barking'!!

No offense taken! I am more offended by smoke going where it should not,than the truth!!!


Thanx to all!!! smile
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