37 NACE INTERNATIONAL: VOL. 56, NO. 3 MATERIALS PERFORMANCE MARCH 2017
12 T. Kob ayashi , " Ef fe ct of Env ironm ental
Factors on the Protective Potential of Steel,"
Proceedings of the 5th International Con-
gress on Metallic Corrosion (Houston, TX:
NACE, 1972), p. 628.
13 J.J. Perdomo, J.H. Payer, "Chemical and Elec-
trochemical Conditions on Steel at Dis-
bonded Coatings," Pipeline Research Com-
mittee, AGA, Catalog # L51736, June 1995, pp.
109-119.
14 ISO 15589-1: 2015, "Petroleum and natural
gas industries—Cathodic protection of pipe-
lin e sy st em s — Par t I : O n - l an d pip elin e
(Geneva, Switzerland: ISO, 2015).
15 NACE SP0169-2013, "Control of External
Corrosion on Underground and Submerged
Metallic Piping Syst ems" (Houston , TX:
NACE, 2013).
This article is based on CORROSION 2016
paper no. 7531, presented in Vancouver, British
Columbia, Canada.
R.A. (BOB) GUMMOW is with BGummow
Enterprises, 121 Twyn Rivers Dr., Pickering,
ON L1V 1E1, Canada, email: bgummow@
c o r re n g . c o m . A m e m b e r o f N A C E
International since 1963, he is a NACE
Corrosion Specialist and Professional
Engineer with more than 50 years of
experience in the application of CP to a
wide variety of structures in many indus-
tries. He has presented over 50 papers on
topical aspects of CP. He received two
NACE Technical Achievement Awards and
the Colonel Cox Award for Corrosion
Engineering.
SORIN SEGALL is vice president of techni-
cal engineering at Corrosion Service Co.,
Ltd., 9-280 Hillmount Rd., Markham, ON
L6C 3A1, Canada. He has more than 40
years of experience in corrosion engineer-
ing, including CP, mitigation of alternating
current (AC)-induced voltages, AC corro-
sion, and direct assessment of external
corrosion. A member of NACE for more
than 20 years, he is a NACE Cathodic
Protection Specialist and Professional
Engineer. He has an M.Sc. degree in
electrical engineering.
DANIEL FINGAS is the technical engineer-
ing manager at Corrosion Service Co.,
Ltd., email: dfingas@corrosionservice.com.
He is a NACE Cathodic Protection
Specialist and Professional Engineer. His
experience in the oil and gas industry
includes extensive work with pipeline
integrity assessment for external corro-
sion, HDD testing, and stray current
testing. He has an M.A.Sc. degree in
electrical engineering and has been a
NACE member since 2010.
Editor's note: Learn more about cathodic protection for steel structures buried in soil in this new
Materials Performance quarterly special feature, "The Science Behind It." Now that you've read the
MP article about the effect of pH and degree of environmental aeration on the corrosion rate,
explore the science behind the corrosion problem, which is presented in these related CORROSION
articles:
Y. Hosokawa, F. Kajiyama, Y. Nakamura, "New Cathodic Protection Criteria Based on Direct and
Alternating Current Densities Measured Using Coupons and Their Ap plication to Modern
Steel Pipelines," Corrosion 60, 3 (2004): pp. 304-312. http://corrosionjournal.org/doi/
abs/10.5006/1.3287735
F. Brichau, J. Deconinck, "A Numerical Model for Cathodic Protection of Buried Pipes," Corrosion
50, 1 (1994): pp. 39-49. http://corrosionjournal.org/doi/abs/10.5006/1.3293492
G.-L. Song, C.-N. Cao, H.-C. Lin, "A New Technique for Correlation of Underground Corrosion,"
Corrosion 51, 7 (1995): pp. 491-497. http:// corrosionjournal.org/doi/abs/10.5006/1.3294369
A.W. Peabody, "Use of Magnesium for Cathodic Protection of Pipe Lines in High Resistivity
Soil," Corrosion 15, 9 (1959): pp. 65-70. http:// corrosionjournal.org/doi/abs/10.5006/0010-
9312-15.9.65
L.P. Sudrabin, F.W. Ringer, "Some Observations on Cathodic Protection Criteria—A Contribution
to the Work of NACE Technical Unit Committee T-2C On Minimum Current Requirements,"
Corrosion 13, 5 (1957): pp. 81-87. http://corrosionjournal.org/doi/abs/10.5006/0010-9312-
13.5.81
An Alternative View of the Cathodic Protection Mechanism on Buried Pipelines