Innage chart???

Not really sure what you are asking? How much you can load before you scully out? It's different for every product, and depends on temp of product. What are you trying to load?

 

All innage charts are not created equal because of the size of your tank. In other words, your 7000 gallon tank could be wider/thinner/taller/shorter than another. Innage gauging is accomplished simply by measuring the height of your product from the tank bottom or fixed plate up to the surface of your product. You should have a gauge or reference chart or table correlated to gross gallons to convert to feet and inches and/or vice versa. Remember the charts/tables are only accurate when the vehicle is level.

 

I'm assuming sn innage chart and what I know as a calibration or strapping chart are the same. Basically it starts at 0 and goes up in a set increment, say 1/4 of an inch. As the measurements increase, so do the number of gallons.

You take a long measuring stick and stick it in wherever the calibration chart says the strike point is. Most often that is the center of the done, but I have seen ones that are different.

Then you pull out the stick, and compare the measurement (the wet part) to your calibration chart. If it's 33 1/2 inches you find the number 33 and then go over to 1/2 and it will have the number of gallons.

 

you're refering to and outage chart, measuring from the bottom up. An innage chart measures from the top of the product to the top of the tank or dome.

 

That's backwards with my experience regarding petroleum. Outage is the distance from the top of the product to the top of the tank (or given reference point).

See INNAGE GAUGE

https://www.enercongroup.com/Definitions-Measurement.htm


Also, check the definition of INNAGE here.

http://books.google.com/books?id=6CQKozxTKG4C&pg=PA262&lpg=PA262&dq=innage+gauge+bottom+tanker+petroleum&source=bl&ots=GsZKvPaj1l&sig=C3MmttNfN-mVFy0Xh6eHIIf3nRQ&hl=en&sa=X&ei=FRAQUpypKoma2AW50IHgCw&ved=0CGEQ6AEwBw#v=onepage&q=innage%20gauge%20bottom%20tanker%20petroleum&f=false

 

We don't know what the poster is trying to do. I'm guessing as we all are... he has a bulk tanker. I'm also guessing he was provided an innage chart with it but I fail to see ANY use in this in loading. I'm also guessing that there is a ullage chart from a fixed point also provided. The OP is probably confused and is really wanting to know about ullage, for proper filling of said amounts. But again, we don't know what he is filling??? (water? Chemical? Fuel? Gasoline? ) ... As the max ullage will change with temp... We need to know more.

 

I stand corrected

 

Outage charts should show the reference or 'strike point' to measure own from...Matlack had a bolt threaded into a nut welded onto the inside of the dome collar marking where you had to stick most of their conicals.

A lot of double-conicals specify where in the dome, forward or rear, you need to measure at to get a fairly accurate reading. Today's charts are a theoretical as they are done on a design computer and will be the same for a whole series of tanks. They are close but not exact.

The old charts that were gauged by E.F. Saybolt after being leveled on all corners and filled 1/4 inch at a time w/ a meter were more exact as they were done for each individual tank which is a PITA if you own a lot of tanks. Outage is much harder to measure if you are not measuring from the correct point you will always load the wrong amount.

 

Shedfit1, most shippers tell chemical drivers how many gal they need to load to get the temp corrected weight. You then look up the innage and tell the loader how many inches to set his stick. unless you are the one operating the spiller.