1. Staying in Compliance: Spill and Overfill
Presented by: Brent Roth
OPW Retail Fueling
IPECA UST Seminar 2016

2. Session Objectives: The Basics of Spill and Overfill Protection
Options for Spill and Overfill
Proper Maintenance

3. https://youtu.be/g1klrDFjaqs

4. Spill Containment Manholes:
Overspill Protection
Spill Containment Manholes:
USTs must have catchment basins (also called spill buckets) installed at the fill pipe to contain spills that may occur as a result of fuel deliveries.

5. Tank Fills and Spill Containment
Options of Spill Buckets:
Different Sizes: 5 – 25 gallons
With drains or w/o drains
Thread on or slip on
Installed at grade or below grade
Direct bury or retractable
Single wall or double wall
Lids are watertight or sealable covers
Most spill buckets are five gallons in size, but they do come in larger sizes, as shown here. 5

6. Tank Fills and Spill Containment
Single wall, direct bury bucket
*Most states only require single wall
Let’s look at Spill Containment: This photo shows a spill containment manhole. Spill containment is intended to contain small releases of product that could result during delivery of the product into the tank from the tanker truck hose. Spill containment is usually achieved by using spill container manholes -- also called spill buckets. This is where the fill pipes go into the tank tops and where the product delivery is made. 6

7. Tank Fills and Spill Containment
With the new EPA regulations, many customers are choosing to go with a replaceable single wall bucket option.

8. Tank Fills and Spill Containment
Double wall, retractable spill bucket
*Some states require a double wall spill bucket. Example: Kentucky*

9. Testing the Double Wall

10. EASY TESTING EVERY THREE YEARS WITH DOUBLE WALL!!!!

11. Tank Fills and Spill Containment
In this installation, you can see how they are mounted to the tanks with a riser pipe. 11

12. Spill Containment Manholes
Checklist Item
Spill container is empty of liquids. Use drain valve or manually remove liquid and DISPOSE OF PROPERLY!
Drain valve is working properly
If plugged, make sure drain plug is secure
Remove any debris (soil, stones, or trash)

13. Spill Container Maintenance
No water, or product.

14. Spill Container Maintenance
No dirt, trash or foreign objects.

15. Overfill Protection Summary
Spill Containment Manholes
Overfill Protection Summary
Please Remember: The spill bucket is designed to TEMPORARILY CONTAIN product spills that might occur during fuel delivery. To contain a spill, the spill bucket must be liquid tight!
The spill bucket is not designed to contain fuel for long periods of time and must be quickly emptied and contents DISPOSED OF PROPERLY!

16. Overfill Prevention Three methods Automatic Shutoff Device
Vent Restriction Device
Overfill Alarm
Many leaks have occurred form underground storage tanks in the past due to overfilling the tanks while a product delivery is being made. There are three acceptable methods to prevent overfill and one of these methods must be used.

17. Automatic Shutoff Devices
Overfill Protection
Automatic Shutoff Devices
A mechanical device installed in line with the drop tube within the fill pipe riser.
Slows down and then stops the delivery when the product has reached a certain level in the tank.

18. Overfill Prevention
This slide shows how it works. When the product entering the tank reaches a certain predetermined level, which should represent 95% capacity, the flapper valve closes and prevents further delivery. There are, however, various bypass mechanisms to allow the contents of the delivery hose to be drained into the tank.

19. Automatic Shutoff Devices
Overfill Protection
Automatic Shutoff Devices
Should be positioned so that the float arm is not obstructed and can move through its full range of motion.
The shutoff valve should shut off the flow of fuel to the UST at 95% of the tank’s capacity.

20. Overfill Protection Drop tube must extend within 6” of tank bottom
Photo 92
In the last unit we saw this drawing showing a special kind of drop tube.
Drop tube must extend within 6” of tank bottom

21. Overfill Protection Device
Checklist Item
Verify in place.
Remove valve and check condition of float, make sure float operates properly
Insure no obstructions in fill pipe that would keep floating mechanism from working (broken gauge sticks)
***EPA will also be requiring the testing of Overfill Valves during the same frequency as Spill Containers – part of new ruling soon to be released.

22. Overfill Protection Overfill Alarm Overfill Prevention
We mentioned before that there were three options as far as providing overfill protection. We covered the overfill flapper valves and the ball float valves. The third method is to have an overfill alarm. This can be a separate dedicated overfill alarm with a sensor that goes into the tank or it can be provided by an automatic tank gauge system.

23. Overfill Protection
Overfill Alarms
This device activates an audible and/or visual warning to delivery personnel when the tank is either 90% full or is within one minute of being overfilled.

24. Overfill Protection
Overfill Alarms
The alarm must be located so that it can be seen and/or heard from the UST delivery location. Once the electronic overfill alarm sounds, the delivery person has approximately one minute to stop the flow of fuel to the tank.

25. Overfill Prevention – Overfill Alarm
Alarm mounted near fills, clearly labeled; Alarm is functional; Alarm sounds at the proper product level.

26. Thank you!