GB2019000A - Measurement of Cathodic Protection - Google Patents

Measurement of Cathodic Protection

Info

Publication number
GB2019000A
GB2019000A GB7909569A GB7909569A GB2019000A GB 2019000 A GB2019000 A GB 2019000A GB 7909569 A GB7909569 A GB 7909569A GB 7909569 A GB7909569 A GB 7909569A GB 2019000 A GB2019000 A GB 2019000A
Authority
GB
United Kingdom
Prior art keywords
anode
resistor
power supply
potential
cathodic protection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB7909569A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Morgan Berkeley and Co Ltd
Original Assignee
Morgan Berkeley and Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Morgan Berkeley and Co Ltd filed Critical Morgan Berkeley and Co Ltd
Priority to GB7909569A priority Critical patent/GB2019000A/en
Publication of GB2019000A publication Critical patent/GB2019000A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/10—Measuring sum, difference or ratio
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
    • C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
    • C23F13/04—Controlling or regulating desired parameters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
    • G01N17/02—Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Environmental Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Ecology (AREA)
  • Analytical Chemistry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Prevention Of Electric Corrosion (AREA)

Abstract

A technique for determining the potential of a metallic structure 1 relative to a surrounding electrolyte, sacrificial anodes being provided for the cathodic protection of the structure, avoids the necessity to on provide special reference electrodes. One of the sacrificial anodes 2 is used as a reference electrode, and the potential difference which exists or would exist between that anode 2 and the structure 1 in a condition of effective electrical isolation of the anode from the structure is determined. A resistor 4 electrically connects that anode 2 to the structure 1 and a D.C. power supply 8 is coupled between the anode 2 and the structure 1. The aforesaid condition is indicated by equality between the current in the resistor 4 and the current from the power supply 8, and from the voltage then measured across the resistor 4 the required relative potential can be determined. In disclosed apparatus a comparator 13 output, generated in response to a comparison between these two currents, controls the D.C. power supply 8 to achieve such equality. <IMAGE>
GB7909569A 1977-12-21 1979-03-19 Measurement of Cathodic Protection Withdrawn GB2019000A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7909569A GB2019000A (en) 1977-12-21 1979-03-19 Measurement of Cathodic Protection

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB5334277 1977-12-21
GB7909569A GB2019000A (en) 1977-12-21 1979-03-19 Measurement of Cathodic Protection

Publications (1)

Publication Number Publication Date
GB2019000A true GB2019000A (en) 1979-10-24

Family

ID=26267243

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7909569A Withdrawn GB2019000A (en) 1977-12-21 1979-03-19 Measurement of Cathodic Protection

Country Status (1)

Country Link
GB (1) GB2019000A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2538004A1 (en) * 1982-12-21 1984-06-22 Nippon Light Metal Co METHOD FOR THE CATHODIC PROTECTION OF ALUMINUM OBJECTS
WO2008110625A1 (en) * 2007-03-15 2008-09-18 Caen Rfid S.R.L. Apparatus for measuring sacrificial anode wear
US20150159280A1 (en) * 2013-12-06 2015-06-11 Saudi Arabian Oil Company Cathodic protection automated current and potential measuring device for anodes protecting vessel internals
CN114934276A (en) * 2022-05-17 2022-08-23 中国船舶重工集团公司第七二五研究所 Auxiliary anode of ship self-adaptive environment

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2538004A1 (en) * 1982-12-21 1984-06-22 Nippon Light Metal Co METHOD FOR THE CATHODIC PROTECTION OF ALUMINUM OBJECTS
WO2008110625A1 (en) * 2007-03-15 2008-09-18 Caen Rfid S.R.L. Apparatus for measuring sacrificial anode wear
US20150159280A1 (en) * 2013-12-06 2015-06-11 Saudi Arabian Oil Company Cathodic protection automated current and potential measuring device for anodes protecting vessel internals
WO2015084691A1 (en) * 2013-12-06 2015-06-11 Saudi Arabian Company Cathodic protection automated current and potential measuring device for anodes protecting vessel internals
US9441307B2 (en) * 2013-12-06 2016-09-13 Saudi Arabian Oil Company Cathodic protection automated current and potential measuring device for anodes protecting vessel internals
CN114934276A (en) * 2022-05-17 2022-08-23 中国船舶重工集团公司第七二五研究所 Auxiliary anode of ship self-adaptive environment

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)