HomeMy WebLinkAboutCathodic Protection- CHESTER LIQUOR 3.12.18Sessions
P.O. Box 308
Oceano, CA 93475-0308
(661) 833-9501 Fax (805) 202-8475
License 844326A/HAZ
SESSTANK@AOL.COM
March 17, 2018
Rich Environmental
5634 Brooks Court
Bakersfield, CA 93308
Re: Chester Liquor
3401 South Chester Avenue
Bakersfield, CA
A Cathodic Protection certification test was performed at the above location
on March 12, 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 -1561 -528
Tank 2 -1549 -631
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 dirt just west of the tanks.
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 20 V D.C. Amps 5
Setting Coarse B Fine 1
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