Server maintenance is scheduled for Saturday, December 21st between 6am-10am CST.

During that time, parts of our website will be affected until maintenance is completed. Thank you for your patience.

Menu
Search
Filters
Close
Menu

Use GIVING24 at checkout to save 20% on eCourses and books (some exclusions apply)!

51314-4344-An Examination of the Realities of the Plant Buried Piping Environment Via Measured Potentials

Picture for An Examination of the Realities of the Plant Buried Piping Environment Via Measured Potentials
Available for download
Product Number: 51314-4344-SG
ISBN: 4344 2014 CP
Author: Peter Wood
Publication Date: 2014
$0.00
$0.00
$0.00
Power plants contain a complex network of buried piping composed of various materials primarily metals all electrically connected via a copper grounding grid. While the effects of mixed metal couples are a topic of discussion little has been done to examine and document their measured impact in a real-world environment. This paper will present an analysis of an extensive amount of native (static) copper/copper sulfate reference cell (CSE) potential data obtained from buried structure surveys at more than twenty nuclear plants most with existing CP systems but several without CP. By integrating this CSE potential data with detailed digitized drawings of piping and grounding systems showing buried structures by material diameter and coating type a map of the native potential landscape in nuclear power plants with respect to the buried mixed metal piping environment is developed. Statistical analyses of the distribution of native potentials will be discussed along with possible implications of these analyses for our understanding of the real-world impact of mixed metals. Suggestions for further examination of the effects of mixed metals in a plant environment will also be presented.The perspectives discussed in this paper have implications for the nuclear power plant operator especially with regard to LR-ISG-2011-03 “Final License Renewal Interim Staff Guidance” for NUREG-1801 Revision 2 (“The GALL Report”) Aging Management Program XI.M41.Note: Some of the data presented in this paper was previously presented at an EPRI CPUG meeting in February 2013. 
Power plants contain a complex network of buried piping composed of various materials primarily metals all electrically connected via a copper grounding grid. While the effects of mixed metal couples are a topic of discussion little has been done to examine and document their measured impact in a real-world environment. This paper will present an analysis of an extensive amount of native (static) copper/copper sulfate reference cell (CSE) potential data obtained from buried structure surveys at more than twenty nuclear plants most with existing CP systems but several without CP. By integrating this CSE potential data with detailed digitized drawings of piping and grounding systems showing buried structures by material diameter and coating type a map of the native potential landscape in nuclear power plants with respect to the buried mixed metal piping environment is developed. Statistical analyses of the distribution of native potentials will be discussed along with possible implications of these analyses for our understanding of the real-world impact of mixed metals. Suggestions for further examination of the effects of mixed metals in a plant environment will also be presented.The perspectives discussed in this paper have implications for the nuclear power plant operator especially with regard to LR-ISG-2011-03 “Final License Renewal Interim Staff Guidance” for NUREG-1801 Revision 2 (“The GALL Report”) Aging Management Program XI.M41.Note: Some of the data presented in this paper was previously presented at an EPRI CPUG meeting in February 2013. 
Product tags
Also Purchased
Picture for 11181 Methodology for Surveying Buried Plant Piping for Coating Condition and CP Effectiveness
Available for download

11181 Methodology for Surveying Buried Plant Piping for Coating Condition and CP Effectiveness

Product Number: 51300-11181-SG
ISBN: 11181 2011 CP
Author: Andy Smart, Steve Biagiotti, Andy Jensen and Eric Elder
Publication Date: 2011
$20.00
Picture for Cathodic Protection Coupon Use for Buried Piping in Plant (i.e. Complex) Facilities
Available for download

Cathodic Protection Coupon Use for Buried Piping in Plant (i.e. Complex) Facilities

Product Number: 51317--8824-SG
ISBN: 8824 2017 CP
Author: Douglas Gilroy
Publication Date: 2017
$20.00

Measurement and interpretation of cathodic protection data in plant facilities present challenges where mixed metals are electrically continuous with the protected structure. This paper address some of the confusion and important aspects when using coupons for buried piping in mixed-metal circuits.
Picture for 03713 PROBLEMS ASSOCIATED WITH REMOTE ANODE BEDS
Available for download

03713 PROBLEMS ASSOCIATED WITH REMOTE ANODE BEDS IN A VERY LOW RESISTIVITY SOIL FOR THE PROTECTION OF PIPING NETWORK IN THE CONGESTED AREAS OF A PETROCHEMICAL COMPLEX

Product Number: 51300-03713-SG
ISBN: 03713 2003 CP
Author: Abdul Hameed Mohammad, Sameer A. Rashwan, Saleh A. AI-Harbi
$20.00
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support