|
Issue Date: November 22, 1995
Revision Date: May 23, 2007
Estabrook
EZY CHEK Systems
(originally listed as Horner EZY CHEK)
EZY-Chek II
VOLUMETRIC TANK TIGHTNESS TEST
METHOD (OVERFILL)
| Certification |
Leak rate of 0.1
gph with PD = 99.95% and PFA = 0.05%. |
| Leak
Threshold |
0.05 gph.
A tank system should not be declared tight if the test result indicates a
loss or gain that equals or exceeds this threshold. |
| Applicability |
Gasoline, diesel,
aviation fuel, fuel oil #4. |
| Tank
Capacity |
Maximum of 12,000
gallons.
Tank must be minimum 100% full. |
| Waiting
Time |
Minimum of 6
hours between delivery and testing. Minimum of 3 hours between
"topping off" and testing.
Total minimum waiting time is 6 hours.
There must be no delivery or dispensing during waiting time. |
| Test
Period |
Minimum of 1
hour, 40 minutes (33 minutes monitor mode and 1 hour, 7 minutes test
mode).
At the conclusion of test mode, data are checked for the manufacturer's
stop test criteria.
If data do not meet the criteria, testing must continue.
Test data are acquired and recorded by system's computer.
Leak rate is calculated from last 1 hour, 7 minutes of test period
data.
There must be no dispensing or delivery during test. |
| Temperature |
Average for
product is determined by a resistance temperature detector (RTD). |
| Groundwater |
Depth to
groundwater in tank excavation backfill must be determined.
If groundwater is above bottom of tank, product level must be adjusted to
provide net pressure of 2-4 psi at bottom of tank.
Groundwater level must be stable prior to and during test. |
| Calibration |
Load cell must be
calibrated in accordance with manufacturer's instructions before each use. |
| Comments |
Not evaluated
using manifolded tank systems. |
|
Estabrook
EZY CHEK Systems
|
Evaluator:
W. A. Kibbe and Associates
|
|
1505
Woodside Ave.
|
Tel:
(517) 797-2425
|
|
Essexville,
MI 48732
|
Date
of Evaluation: 09/18/90
|
|
Tel:
(989) 891-9868
|
|
|
E-mail: sales@ezychek.com |
|
|
URL: www.ezychek.com |
|
|
