HomeMy WebLinkAbout2106 TAFT CATHODICSessions
P.O. Box 308
Oceano, CA 93475-0308
(661) 833-9501 Fax (805) 202-8475
License 844326A/HAZ
SESSTANK@AOL.COM
February 7, 2018
EZ Mart Mobil
2106 Taft Highway
Bakersfield, CA 93313
Re: EZ Mart Mobil
2106 Taft Highway
Bakersfield, CA 93313
A Cathodic Protection certification test was performed at the above location
on February 5, 2018. Upon arrival at the site a visual inspection was
performed on the anode connections, rectifier and cathodic protection test
leads. The rectifier settings and outputs were noted and the test was
performed using a copper-copper sulfate reference cell in contact with the
earth and a digital multimeter. The following readings were then obtained:
On (mv) Off (mv)
Tank 1 -1041 -445
Tank 2
Tank 3
-957
-959
-444
-442
The above structure-to-soil potentials were measured with a digital volt
meter connected between the underground storage tank and a saturated
copper-copper sulfate reference electrode in contact with the earth. The
readings were obtained at the tank fills. The copper-copper sulfate cell was
placed in the Cathodic Protection test box.
Structure-to-soil potentials measurements for each tank exceed the
recognized NACE International criteria of -850 millivolts and 300 millivolt
shift for full cathodic protection.
The Rectifier settings and outputs are as follows:
Output Volts 22 V D.C. Amps 3
Setting Coarse B Fine 3
Hourmeter 15523
The setting was adjusted from A4 to B3.
This survey was conducted in accordance with the procedures described in
the NACE International Standard Recommended Practice RP0285-95,
Corrosion Control of Underground Storage Tank Systems by Cathodic
Protection and American Petroleum Institute (API) Recommended Practice
1632, Cathodic Protection of Underground Petroleum Storage Tanks and
Piping Systems.
This system is operating as designed and all underground storage tanks
are receiving the required protective current.
Thank you for the opportunity to assist you in this phase of your corrosion
mitigation program. Should you have any questions or concerns please do
not hesitate to contact us at any time.
Respectfully,
Juliana Sessions, Contractor
Certified by:
Anthony Hazelwood II
NACE Corrosion Specialist #4385