HomeMy WebLinkAbout2020 CATHODICSessions
P.O. Box 308
Oceano, CA 93475-0308
(661) 833-9501 Fax (805) 202-8475
License 844326A/HAZ
SESSTANK@AOL.COM
February 3, 2020
Jaco Oil Company
P.O. Box 82515
Bakersfield, CA 93389
Re: 7776 Howard’s Mini Mart
3300 Planz Road
Bakersfield, CA 93309
A Cathodic Protection certification test was performed at the above location
on January 31, 2020. 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 -974 -508
Tank 2 -964 -511
Tank 3 -961 -507
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 with cathodic protection test leads located in the
cathodic protection test box. The copper-copper sulfate cell was placed in
the test box.
Structure-to-soil potentials measurements for each tank exceed the
recognized NACE International criteria of -850 millivolts and 300 millivolts
shift for full cathodic protection.
After the rectifier settings were adjusted, the follwoing outputs were
obtained:
Output Volts 64 D.C. Amps 4
Setting 60 %
Hourmeter N/A
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