Owners and operators of
regulated underground
storage tanks (USTs) on tribal
lands must comply with the
federal UST regulation.
This compliance assistance
brochure highlights
tips to help you manage your
piping release detection.
Note: This document is a
resource to promote
compliance and does not
replace the federal UST
regulation.
This brochure is one in a
series of EPA compliance
assistance brochures
designed to help owners and
operators in Indian country
comply with the federal UST
regulation.
Other brochures focus on
implementation, compatibility,
spill buckets, overfill
protection, recordkeeping and
notification, financial
responsibility, insurance, and
tank release detection.
https://www.epa.aov/ust/best-
manaaement-practices-usts-indian-
countrv
P
Kbit VclU

Inspect
oEPA
Office of Underground Storage Tanks
www.epa.aov/ust
May 2017
EPA-510-F-17-003
Compliance Assistance In
Indian Country

-------
RELEASE DETECTION
Piping -elease detection is a method or combination
of methods designed to help quickly detect releases
from underground piping.
What type of release detection must
you use?
A line leak detector must be installed on your pres-
surized piping and must be tested annually.
Also, if your pressurized piping was installed or
replaced on or before April 11, 2016, you must use
any of the following release detection methods:
* annual tightness test
monthly monitoring using either y^
interstitial monitoring (for double-
walied piping)
*continuous in-tank leak detection
*vapor monitoring
*groundwater monitoring
~statistical inventory
reconciliation
other methods approved by the
implementing agency
If your pressurized piping was installed or replaced
after April 11, 2016, you must use secondary
containment with interstitial monitoring.
What type of release detection can
you use for suction piping?
Release detection is not required if the
suction piping:
operates at below atmospheric
pressure
is sloped so its contents drain
back into the tank, and
there is only one check valve
directly below the dispenser pump
If your suction piping does not exactly match the
characteristics above, you must use one of the
monthly methods used for pressurized piping, or
conduct a tightness test at least every 3 years.
If you use vapor
monitoring or
groundwater
monitoring, you
must keep
records of a site
assessment
showing that
the monitoring
system is set up
properly.
Suction piping system
What should you do to ensure your
release detection device is working
properly? If you use:
Control panel
Check your printout
* What does the printout show? Is the
system working properly or are there
problems that need to be addressed?
MUM DD, YYYY HH:MM XM
Q 1:UNLEADED REG LINE
3.0 GAL/HR RESULTS:
NUMBER OP TESTS PASSET
PREV 24 HOURS : 12-
SINCE MIDNIGHT : 81
0.20 GAL/HR RESULTS:
0.10 GAL/HR RESULTS:
Piping leak test results
ALARM HIM IB
	 SENSOR fttfiM —¦
LIDISP12
DISPSUMP
| FUEL (Ml |
71TT770D6 10112 PH
I FUEL Ml I
IK1 SO. 2005 8:27 PH
IFHFI UM I
FEB 2?, 2005 5:03 PM
LIQUID STATUS
MUM DD,YYYY HH:M
I 1 : UNLEADED ANNULAR
jEMSOR rami
L 2 : M ANNULAR
ISEHSOP. KORMALI
Sump sensor alarm history
Sump sensor status report
Immediately respond to and investigate any
control panel alarms or flashing lights.
Make sure alarms function properly.
Releases may go undetected if you
ignore or disable the alarms.
Containment sump
^ Check your sump
*	Is a sensor present?
*	Is the sensor positioned
correctly?
*	Is there any liquid or
product present?
*	Does the lid have a tight
seal and is it securely
fastened?
*	Is the sump damaged?
A damaged sump would no
longer hold product if a
release occurs.

Control panel indicator lights
Tank top sump with double-
walled piping and liquid
Containment sumps that are part of the
piping interstitial monitoring system must
be tested at least once every three years
for liquid tightness.
Tank top sump full of liquid
How do you avoid common piping
release detection problems?
Line leak detectors (LLD)
,5S" Make sure the LLD is installed or functions
correctly
* Test annually or in accordance with
manufacturer's requirements
Make sure the LLD is programmed or properly
connected
Sensors
*" Make sure sensors are present and functioning
* Make sure sensors are properly installed
Tank top sump sensor installed too high
Moved sensor cannot detect liquid
Tightness Testing
Test every three years (suction systems that do
not meet the exemption requirements)
m Conduct an annual line test for pressurized piping
Recordkeeping
w Keep records of annual tightness tests
*	Keep records of annual release detection
equipment tests
Keep release detection performance claims or
repair and maintenance records
*	Keep records of the 30 day visual equipment
inspection, or annual walkthrough inspection
w Keep site assessment records (for vapor and
groundwater monitoring)
For more information on piping release
detection, see EPA's Release Detection For Underground
Storage Tanks and Piping. Straight Talk on Tanks or
order free copies by calling (800) 490-9198.
Submersible turbine pump Electronic LLD	Mechanical LLD
without a LLD installed

-------