1、 A Guide to the Organization of Underground Corrosion-Control Coordinating Committees AN OFFICIAL NACE INTERNATIONAL PUBLICATION TPC Publication 11 Item No. 25011 Published by NACE International 1440 South Creek Drive Houston, TX 77084 Neither NACE International, its officers, directors, nor members
2、 thereof accept any responsibility for the use of the methods and materials discussed herein. No authorization is implied concerning the use of patented or copyrighted material. The information is advisory only and the use of the methods and materials is solely at the risk of the user. Reproduction
3、of contents in whole or part or transfer into electronic or photographic storage without permission of the copyright owner is expressly forbidden. 2008 NACE International NACE International i Foreword Underground corrosion control coordinating (electrolysis) committees (UCCC) are composed of technic
4、al personnel who represent a variety of companies concerned with underground metallic cables, pipelines, or tanks. Many companies, such as those that operate direct current (DC) traction systems and which could introduce DC into the earth, possibly causing electrolytic corrosion on underground metal
5、lic structures, are also interested participants in the corrosion control coordinating committee program. Corrosion control coordinating committees are not components of NACE International, nor does this publication contain required procedures for establishing and operating committees. Rather, it is
6、 intended to serve as a guide for existing committees and for the establishment of new committees where none exist. As numerous corrosion control coordinating committees were formed, the need to catalogue the committees, their territories, their present officers, and other vital data arose. As an in
7、ternational corrosion control organization, NACE met the qualifications for accomplishing this task. In response to the need for such information, NACE established Task Group T-10B-1 to develop and maintain information on existing corrosion control coordinating committees and to prepare this publica
8、tion. The purpose of NACE is NOT to infringe upon the autonomy of individual committees, but rather to act as a clearinghouse for information between corrosion control coordinating committees and to supply administrative support services when needed. NACE Headquarters staff maintains a current direc
9、tory of known corrosion control coordinating committees and their officers as supplied to NACE Headquarters. For further information on this report or to supply new or updated information, contact the NACE Technical Activities Division, 1440 South Creek Drive, Houston, TX 77084. This manual was orig
10、inally prepared in 1986, editorially updated in 1998 by NACE Task Group T-10B-1, a component of Unit Committee T-10B on Interference Problems, and reaffirmed in 2008 by Specific Technology Group (STG) 05, “Cathodic/Anodic Protection.” This report is published under the auspices of STG 05. Presently,
11、 it maintained by TEG 022X, “Corrosion Control Coordinating Committee.” NACE International ii Table of Contents Page Foreword . i Introduction . 1 History 1 Definition of Interference . 1 Committee Bylaws . 1 Suggested Steps for Committee Organization 2 Procedures 2 Size of Territories 2 Dual Commit
12、tee Systems . 2 Committee Meeting Schedules . 3 Election of Officers 3 Administrative Functions 3 Meeting Minutes 3 Legal Considerations 3 Rectifier and Bond Directories 4 Directory 4 Conclusion 4 Appendixes . 5 Appendix A: Sample Bylaws #1 5 Appendix B: Sample Bylaws #2 9 Appendix C: Page from a Co
13、rrosion Control Coordinating Committee Directory . 11 Appendix D: Page from a Computer Printed Corrosion Control Coordinating Committee Directory . 12 Appendix E: Minutes Before Use of Computer Coding 13 Appendix F: Minutes Using Computer Coding . 16 Appendix G: Form for Reporting Installations and
14、Modifications . 21 Appendix H: Printout of Computerized Rectifier Records 22 Appendix I: Directory of Known Electrolysis Coordinating Committees in the United States and Canada as of August 2008 23 Appendix J: Most Recent Contacts for Known Active Committees as of August 2008 . 25 NACE International
15、 1 Introduction A corrosion control coordinating committee exists for three purposes: to keep all companies that lie in the committees geographical area of concern informed of activity by others that could cause corrosion interference due to stray DC currents in any companys underground metallic str
16、uctures, to discuss and schedule ways and means to mitigate any adverse effects, and to serve as a permanent source of information regarding locations, histories, and company corrosion control personnel in the committees operating area. In addition, many corrosion control coordinating committees sup
17、port active information and education programs that update members on new corrosion control products and techniques. A corrosion control coordinating committee has no official jurisdiction over the actions of member and nonmember companies. Committee participation is a cooperative venture with a pro
18、ven record of avoiding and discouraging cumbersome litigation between companies on corrosion control matters. History The founding individuals of the first committees laid the groundwork for corrosion control coordinating committees by securing the approval of their respective management on the conc
19、ept of such a committee, and then by seeking out and communicating with others in similar operating areas that could mutually benefit. Preorganization sessions were called for briefing and discussion in order to gain the support of others in the industry. When enough support had been pledged in a pa
20、rticular area, charter meetings were called. Corrosion control coordinating committees were thus launched and their benefits were soon realized. In order to engineer cathodic protection (CP) facilities intelligently with minimal interference, underground corrosion control personnel who participate i
21、n corrosion control coordinating committees are made aware of the existence and location of other underground metallic structures, as well as receiving information about corrosion control methods being used, interference possibilities, and the corrosion control personnel involved. The corrosion cont
22、rol coordinating committee structure allows personnel to join a cooperative multicompany interference control group and to follow up with progress reports at regularly scheduled meetings. Definition of Interference The original focus in the study of underground structure deterioration was the operat
23、ion of DC-powered traction systems. Later on, the increased installation of CP rectifiers became a major concern. With the recent resurgence of municipal DC traction systems, these systems have again become a major source of interest for corrosion control coordinating committees. In addition, the in
24、creasing frequency of pipeline installation in high-voltage alternating current (AC) power corridors has introduced another possible cause of interference. There are many different causes of electrical interference, but not every source of electrical influence is necessarily detrimental. Recognizing
25、 this, the Society in Ontario for Controlling Electrolysis has drafted the following definition of interference: 1.0 a. Interference is any electrical effect on a structure due to the action of other parties. b. These effects can be innocuous, beneficial, or detrimental and can be caused by alternat
26、ing and direct current. 2.0 a. Detectable electrical effects are considered innocuous on a structure where additional corrosion or a safety hazard does not result. b. Detectable electrical effects are considered beneficial on a structure where corrosion or a safety hazard is reduced. c. Detectable e
27、lectrical effects are considered detrimental where corrosion or a safety hazard is increased. Committee Bylaws Two sets of bylaws are appended to this report. Appendix A is an example of bylaws for a committee that operates in urban, suburban and rural environments and has considerable dynamic stray
28、 current activity from underground mines. Appendix B lists sample bylaws for a committee that covers several sizable cities and much rural territory, but has very limited experience in dealing with dynamic stray currents. It is suggested that a committee organizer search the present directory of cor
29、rosion control coordinating committees for a comparable operating area and request a copy of that committees bylaws. NACE International 2 SUGGESTED STEPS FOR COMMITTEE ORGANIZATION Procedures 1. Stimulate interest in forming a corrosion control coordinating committee and gain the support of manageme
30、nt and that of related companies. 2. Plan an initial briefing session for interested individuals in which the benefits of committee participation are explained. The assistance of individuals familiar with other committees operations is beneficial. 3. Assemble a group of interested individuals to cho
31、ose a course of action, to select possible temporary officers, and to call a charter meeting. An effort to interest municipal utilities, railways, and power companies is helpful. 4. Subsequent meeting agendas may include the following: (a) Selecting and advising a bylaws committee; (b) Determining t
32、erritorial boundaries that do not overlap with existing committee boundaries; (c) Deciding on the frequency and location of meetings; (d) Choosing a name for the committee; (e) Naming temporary officers; (f) Contacting NACE Headquarters and advising the Technical Liaison/Editor of activities and int
33、entions; and (g) Selecting meeting dates that will not conflict with those of other committees in adjacent areas. Many of the initial decisions can be made by an organizing nucleus. It may be wise, however, to establish only temporary working rules until the bylaws committee presents its work to the
34、 membership for review and approval. This allows all members to have a part in the formulation of the rules. Size of Territories The size of a territory to be represented by a proposed corrosion control coordinating committee is often a problem to organizers and can be the subject of considerable ob
35、jection from prospective members. A small company, with limited territorial interest, may object to the travel involved and the volume of business handled by a committee that represents a large territory. On the other hand, a company that operates across a large territory may object to dividing its
36、territory into many small committee areas which will require personnel to attend several different meetings and operate under different bylaws. Compromise may be necessary in the process of gaining the necessary industrial support during organization proceedings. The number of committees required in
37、 an area is determined by the amount of territory to be covered as well as the complexity of the interference problems expected. The state of New York, for example, has committee territories covering several counties in addition to a separate committee to contend with the complicated and high volume
38、 of interference problems of the metropolitan New York City area. In some cases, where specific problems exist, subcommittees may be established to facilitate the operation of general committee business. Dual Committee Systems Some corrosion control coordinating committees that began in small cities
39、 have merged with large territorial committees and now operate as subcommittees. Each city subcommittee meets regularly to discuss problems within the city boundaries. At territorial meetings, subcommittee representatives report to the entire committee on any business that is of interest to the enti
40、re territorial committee. An open case number is assigned to the subcommittee for this purpose. This dual committee system enables personnel to attend only the meetings that most often affect their companies operations. NACE International 3 Committee Meeting Schedules Another decision to be made dur
41、ing the formative period of a corrosion control coordinating committee is the frequency of meetings. It is suggested that monthly sessions be scheduled for a trial period of one year to initiate and refine the committees operations. After a year, or sooner if the committee progresses more rapidly, i
42、t may be determined that less frequent meetings will suffice. Committee cases can take a great deal of time when meetings are too far apart. Even for committees that meet monthly, delay in resolving cases is often a problem. Therefore, tactful pressure is often necessary to motivate a member company
43、 toward resolution of its cases. For mature committees, spring, fall, and winter meetings may provide sufficient opportunity to conduct business. The main responsibility of each member is to advise other members of rectifier installation and locations. Attendance at every meeting is not necessarily
44、required to achieve this. Election of Officers Those persons who are involved in the conception and initial formation of the committee are charged with the election of temporary officers to serve until a permanent body of officers is seated. The temporary officers may be selected from the ranks of t
45、hose who worked toward its formation. The Chair, for example, may be an individual who has been actively involved throughout the organization of the committee. The secretary has the most burdensome job of the officers. However, most companies graciously support their representative secretary when th
46、at individual has been willing to undertake the task. ADMINISTRATIVE FUNCTIONS Meeting Minutes When a committee conducts a heavy volume of business, the work entailed can become unwieldy. The recording, typing, reproduction, and mailing of minutes can be a burden to the secretary. However, the use o
47、f computer coding can make the job less troublesome. One Northeastern coordinating committee had meeting minutes that contained paragraphs written in nontechnical language to describe and update each case. This often resulted in eight or more pages of minutes. A member then devised codes for data an
48、d companies that could be used to reduce each case description and its update to two or three short, printed lines. The committee directories were also adapted to make use of this code. It then became possible to obtain personnel listings and addresses on a computer printout for periodic distributio
49、n (Appendixes C and D). Computer coding allows cases to be recalled in numerical order, by county, by company grouping, etc. The minutes of the meeting become more manageable with this shortened, descriptive format. Appendixes E and F contain a copy of the minutes from the above-mentioned committee before and after initiation of the new coded format. A code sheet is included in the latter minutes. Legal Considerations Corrosion control coordinating committee membership is voluntary, but, as is the case with any voluntary organization, a member agrees to follow the approved constit
