oil tanks

Anthony D.

Need to install (4) 330 Gallon indoor tanks in a commercial building. Not sure of the best way to install the tank Fill & Vent piping, and the supply and return to burner.

Can someone point me in the right direction?

Thank you.

Dana

Look in the oil code for your State.

Andy Morgan_2

I like

To run separate fill pipes, and to tee the vents together, with vent alarms in each tank. All 2 inch black with swing joints.I never liked to crossover deal. Then tee the bottoms together and run a single line to the burner. Line size depends on a few different factors. The fuel pump spec sheet will tell you this.

Andy Morgan

R. Morgan Mechanical, LLC

Andy Morgan_2

Re read the message

Look in the code books, I am not quite sure, but I don't think that amount of storage is allowed inside a building.
I read it as two tanks!

Andy Morgan

R. Morgan Mechanical, LLC

lchmb

just a suggestion

Not to sound bad..but you do not sound to be someone who is familier with the code's related to oil in your state..although it may cost a little more in the long run, I highly suggest you contract to a proffesional in your area...not only will it get done legally..it will be his back busting to get them in...

Bill Nye

NFPA-31

NFPA-31 is where you want to look. I have 2001 edition at hand. I am looking at page 31-18,31-19.

660 gal max capacity. Section 7.5 . You can store more oil if you have 2-3hr fire rated walls and special construction

Patrick Powers

Roth

Look into Roth they have a nice setup for mutiple tanks. What ever road you take look in local codes and hire a pro you can very easily have a real mess if it is not done properly.

Anthony D.

The way I read it Bill..

> NFPA-31 is where you want to look. I have 2001

> edition at hand. I am looking at page

> 31-18,31-19.

>

> 660 gal max capacity. Section

> 7.5 . You can store more oil if you have 2-3hr

> fire rated walls and special construction

Anthony D.

The way I read it Bill..

..is you are not allowed to use a "single" tank of more than 660 gallon, but you can use multiple tanks upto a maximum storage of 1375 gallon. (See 7.5.13.1)

Ands if you read 7.5.13.2 if the tanks are separated by the 2 hour wall you can have upto 1375 gallon in each area.

Both these senarios are when tanks are not in a dedicated room.

Anthony D.

According to the NFPA31

It looks like I can install upto 1375 gal. maximum (according to NFPA31 page 31-19 / Section 7.5.13.1,)as long as no single tank exceeds 660 gal.
Since this is an indoor tank installation I chose to use 330 gal. tanks.
But the code book only shows a pipe hook-up for a two-tank set-up. There is an illustration for more tanks, but only for listed or engineered fuel storage system.

I don't want to run four seperate fill lines if I don't have to, maybe I could pipe two tanks as shown in figure 7.5.15, and do this twice. Then common the vent lines, using one vent alarm per two tank combo.

Sort of a hybrid between what I was thinking and your original advice.

any suggestions?

Anthony D.

what makes you...

...think I'm not familiar with codes or a professional in this industry?

scrook_2

the wording

of your initial question on fill/vent/supply/return plumbing. It can be interpreted anywhere from lack of familiarily w/ any oil tank plumbing requirements to just a lack of familiarity w/ requirements for requirements for setting up more than a pair of tanks. It is also not clear if you are in a state with very strict & specific codes/requirements for oil tanks or one that only has some basic requirements. No question is a foolish question, better to ask and learn!

You also might try http://oiltechtalk.com/ the "discuss" page for more input for your locality.

Stay out of the hot sun! (especially if your in N.E.)!

Anthony D.

I may not have been

clear on the question. My question was on the proper way to interconnect multiple tanks. I have worked with many oil systems over the past 20 years, but have never had to replace/install multiple tanks.

Firedragon_4

You cannot put in more than 660 gallons

and connect it to a single burner unless you have an 'engineered' or 'listed' system, FACT!
NFPA31-2001

Be careful of 'sales claims', they don't hold up in court, BIG FACT!

Anthony D.

Thanks for the advice, but what about when you are supplying six boilers in various locations, with the use of tranfer pumps and auxillary tanks.

What if I connect them so two 330 tanks feed two or three boilers and the other two to feed the rest?

Anthony D.

According to 7.5.13.1

you can not install an "individual" tank exceeding 660 gal., but you can have a multiple tanks upto 1375gal..

I do see what your saying in 7.5.15.1, but I not supplying only one appliance.

Firedragon_4

The drawings in the appendix sum it

up a lot beter than time and space will allow here.

Anthony D.

Thank you, I'll check it out.