(0)

You have no items in your shopping cart.
Log in

Personal menu

Search

Filters

11047 The Fallibility of Data Using Permanent Reference Electrodes

Picture for 11047 The Fallibility of Data Using Permanent Reference Electrodes

Available for download

Product Number: 51300-11047-SG

ISBN: 11047 2011 CP

Author: Robin Leigh Pawson

Publication Date: 2011

Member Price: $0.00

Non Member Price: $20.00

Price: $20.00

Qty:

Buried or permanent reference electrodes are often installed close to pipelines and other buried or submerged structures with the idea that they will provide more accurate or more representative potential data, at that specific location, than a reference electrode on the ground surface.

Such potential data may be used to determine the local cathodic protection level, potential shifts, the presence or absence of interference or for control of automatic output rectifiers. But what if proximity of pipeline and buried reference electrode is not a guarantee of accurate potential data at that point? If the buried reference electrode is installed adjacent to a pipeline with a high quality coating, what will it read?

Coating defects, away from the buried reference electrode location, can have a major impact on the measured potential. Compound this with the presence of foreign voltage gradients (at pipeline crossings), and it will be shown that the potential recorded using the permanent reference electrode may be far removed from reality.

Key Words: permanent reference electrode, buried reference electrode, cathodic protection, coating defects, holidays, close interval potential survey (CIS), pipeline crossings, interference, voltage gradients, -0.85V criterion, 100mV criterion.

Overview

Buried or permanent reference electrodes are often installed close to pipelines and other buried or submerged structures with the idea that they will provide more accurate or more representative potential data, at that specific location, than a reference electrode on the ground surface.

Such potential data may be used to determine the local cathodic protection level, potential shifts, the presence or absence of interference or for control of automatic output rectifiers. But what if proximity of pipeline and buried reference electrode is not a guarantee of accurate potential data at that point? If the buried reference electrode is installed adjacent to a pipeline with a high quality coating, what will it read?

Coating defects, away from the buried reference electrode location, can have a major impact on the measured potential. Compound this with the presence of foreign voltage gradients (at pipeline crossings), and it will be shown that the potential recorded using the permanent reference electrode may be far removed from reality.

Key Words: permanent reference electrode, buried reference electrode, cathodic protection, coating defects, holidays, close interval potential survey (CIS), pipeline crossings, interference, voltage gradients, -0.85V criterion, 100mV criterion.

Product tags

Also Purchased

Picture for 98673 THE BURIED REFERENCE ELECTRODE:

Available for download

98673 THE BURIED REFERENCE ELECTRODE: A CRITICAL LONG TERM PERFORMANCE STUDY

Product Number: 51300-98673-SG

ISBN: 98673 1998 CP

Author: Taylor Leon, Wayne Geyer

$20.00

Picture for 01297 EVALUATION OF PERMANENT REFERENCE

Available for download

01297 EVALUATION OF PERMANENT REFERENCE CELLS FOR DIRECT BURIAL APPLICATIONS

Product Number: 51300-01297-SG

ISBN: 01297 2001 CP

Author: J. Peter Ault, P.E., John Repp and John Travaglini

$20.00

Picture for Service Life Reduction Causes of Permanent Reference Electrodes

Available for download

51314-3800-Service Life Reduction Causes of Permanent Reference Electrodes

Product Number: 51314-3800-SG

ISBN: 3800 2014 CP

Author: Dmitry Sirota

Publication Date: 2014

$0.00

Recently viewed

11047 The Fallibility of Data Using Permanent Reference Electrodes

Popular tags

View all