Issue Date: December 16, 2020
(MP450 Series Magnetostrictive Probe)
AUTOMATIC TANK GAUGING METHOD
||Leak rate of 0.2
gph with PD = 97.13% and PFA = 2.87% for 2 hour test. (20,000 gallon tank)
Leak rate of 0.2 gph with PD = 99.17% and PFA = 0.83% for 8 hour
test. (30,000 gallon tank)
Leak rate of 0.1 gph with PD = 95.25% and PFA
= 4.75% for 8 hour test. (20,000 gallon tank)
||0.05 gph for leak
rate of 0.1 gph
0.1 gph for leak rate of 0.2 gph
A tank system
should not be declared tight if the test result indicates a loss or gain
that equals or exceeds this threshold.
aviation fuel, fuel oil #4, solvents, waste oil, bio-diesel and ethanol
blends compatible with probe floats.
||Maximum of 30,000
gallons for leak rate of 0.2 gph
Maximum of 20,000 gallons for leak rate
of 0.1 gph
Tank must be between 20 and 90% full.
||Minimum of 8
hours between delivery and testing.
Minimum of 5 minutes between
dispensing and testing.
There must be no delivery during waiting time.
||Minimum of 2
hours (0.2 gph leak rate / 20,000 gallon tank)
Minimum of 8 hours (0.2
gph leak rate / 30,000 gallon tank)
Minimum of 8 hours (0.1 gph leak
rate / 20,000 gallon tank)
Test data are acquired and recorded by
Leak rate is calculated from data determined to be
valid by statistical analysis.
There must be no dispensing or delivery
product is determined by probe which contains 5 thermistors.
one thermistor must be submerged in product during test.
||Must be used to
detect water ingress.
Minimum detectable water level in the tank is
Minimum detectable change in water level is 0.124 inch.
probe must be checked and, if necessary, calibrated in accordance with
using manifolded tank systems. Therefore, this certification is only
applicable when there is a probe used in each tank and the siphon is broken
Tests only portion of tank containing product.
product level is lowered, leak rate in a leaking tank decreases (due to
lower head pressure). Consistent testing at low levels could allow a leak to
EPA leak detection regulations require testing of the
portion of the tank system which routinely contains product.
Pneumercator Company, Inc.
Ken Wilcox Associates
1785 Expressway Drive North
Tel: (816) 443-2494
Hauppauge, NY 11788
Date of Evaluation:
09/14/2020; 09/16/2020; 09/22/2020
|Tel: (800) 209-7858, (631) 293-8450 x112
Vendors: A - F |
Vendors: G - M |
Vendors: N - S |
Vendors: T - Z |
Method Index |
this list is not to be construed as an endorsement by any regulatory agency nor
is it any guarantee of the performance of the method or equipment.
Equipment should be installed and operated in accordance with all applicable
laws and regulations. For full details, please refer to our expanded "DISCLAIMER"