Cathodic protection of coated cross country pipelines using magnesium anodes

Conference · Sat Dec 31 04:00:00 EST 1994

OSTI ID:83074

Reding, J T ^[1]; Waguespack, C P ^[2]

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1. Dow Chemical Co., Angleton, TX (United States)
2. Dow Chemical Co., Plaquemine, LA (United States)

Magnesium anodes are an effective source of cathodic protection (CP) current in many situations including coated pipelines. The use of magnesium anodes to protect two 22 cm (8 inch) coated pipelines since 1975 is described. Pipe potentials that satisfy the NACE-69-92 criterion are being obtained at a current density of 0.03 mA/m{sup 2} (0.003 MA/ft{sup 2}) . Anode bed costs for protection are 3/4 cent (USA) per linear meter of pipe per year ($12/mile/year). Cost for anode bed, annual potential measurements, and close interval potential surveys every five years is 4 cents (USA) per linear meter per year ($64/mile/year).

• OSTI ID: 83074
• Report Number(s): CONF-940222--
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
03 NATURAL GAS
ANODES
CATHODIC PROTECTION
DATA
ECONOMICS
ELECTRIC POTENTIAL
LIQUEFIED PETROLEUM GASES
LOUISIANA
MAGNESIUM
NATURAL GAS
PERFORMANCE
PIPELINES
TECHNOLOGY ASSESSMENT
TEXAS
TRANSPORT