1、ASHRAE Guideline 12-2000Minimizing the Risk ofLegionellosis Associatedwith Building WaterSystemsApproved by the ASHRAE Standards Committee February 5, 2000;by the ASHRAE Board of Directors February 10, 2000.ASHRAE Guidelines are updated on a five-year cycle; the datefollowing the standard number is
2、the year of ASHRAE Board ofDirectors approval. The latest copies may be purchased fromASHRAE Customer Service, 1791 Tullie Circle, NE, Atlanta, GA 30329-2305. E-mail: ordersashrae.org. Fax: 404-321-5478. Telephone: 404-636-8400 (worldwide) or toll free 1-800-527-4723 (for orders in U.S.and Canada).
3、2000 American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.ISSN 1041-2336SPECIAL NOTEThis American National Standard (ANS) is a national voluntary consensus standard developed under the auspices of the AmericanSociety of Heating, Refrigerating and Air-Conditioning Engineers
4、(ASHRAE). Consensus is defined by the American National StandardsInstitute (ANSI), of which ASHRAE is a member and which has approved this standard as an ANS, as “substantial agreement reachedby directly and materially affected interest categories. This signifies the concurrence of more than a simpl
5、e majority, but not necessarilyunanimity. Consensus requires that all views and objections be considered, and that an effort be made toward their resolution.”Compliance with this standard is voluntary until and unless a legal jurisdiction makes compliance mandatory through legislation.ASHRAE obtains
6、 consensus through participation of its national and international members, associated societies, and publicreview.ASHRAE Standards are prepared by a Project Committee appointed specifically for the purpose of writing the Standard. TheProject Committee Chair and Vice-Chair must be members of ASHRAE;
7、 while other committee members may or may not be ASHRAEmembers, all must be technically qualified in the subject area of the Standard. Every effort is made to balance the concerned interestson all Project Committees. The Manager of Standards of ASHRAE should be contacted for:a. interpretation of the
8、 contents of this Standard,b. participation in the next review of the Standard,c. offering constructive criticism for improving the Standard,d. permission to reprint portions of the Standard.ASHRAE INDUSTRIAL ADVERTISING POLICY ON STANDARDSASHRAE Standards and Guidelines are established to assist in
9、dustry and the public by offering a uniform method of testing for rating purposes, by suggesting safe practices in designing and installing equipment, by providing proper definitions of this equipment, and by providing other information that may serve to guide the industry. The creation of ASHRAE St
10、andards and Guidelines is determined by the need for them, and conformance to them is completely voluntary.In referring to this Standard or Guideline and in marking of equipment and in advertising, no claim shall be made, eitherstated or implied, that the product has been approved by ASHRAE.DISCLAIM
11、ERASHRAE uses its best efforts to promulgate Standards and Guidelines for the benefit of the public in light of available informationand accepted industry practices. However, ASHRAE does not guarantee, certify, or assure the safety or performance of anyproducts, components, or systems tested, instal
12、led, or operated in accordance with ASHRAEs Standards or Guidelines or thatany tests conducted under its Standards or Guidelines will be nonhazardous or free from risk.ASHRAE STANDARDS COMMITTEE 1999-2000Arthur E. McIvor, ChairMartha J. Hewett, Vice-ChairDean S. BorgesWaller S. ClementsPiotr A. Doma
13、nskiRichard A. EvansMark C. HegbergJohn F. HoganDavid E. KnebelFrederick H. KohlossWilliam J. LandmanNeil P. LeslieNance C. LovvornAmanda K. MeitzDavor NovoselJoseph A. PietschJames A. RanfoneTerry E. TownsendJames K. VallortThomas E. WatsonBruce A. WilcoxJ. Richard WrightSamuel D. Cummings, Jr., BO
14、D ExORaymond E. Patenaude, COClaire Ramspeck, Manager of StandardsASHRAE Standard Project Committee 12-2000 Cognizant TC: Environmental Health CommitteeSPLS Liaison: Waller S. ClementsDavid F. Geary, Chair* Barry S. Fields Godwin C. RogersonPaul A. Lindahl, Jr., Secretary* Carl B. Fliermans Dennis P
15、. Shea*Michael D. Adams* John M. Hodgson* Brian G. Shelton*Joseph Aiello* Kevin B. McBurney George R. ShriverRichard E. Besser William F. McCoy* Reid A. Spence*Robert F. Breiman Amanda K. Meitz Laurance S. StaplesClive R. Broadbent* Richard D. Miller* Janet E. Stout*Karl A. Brown* George K. Morris P
16、atricia T. Thomas*Frederick T. Byers Edwin A. Nordstrom Richard L. TyndallJay C. Butler* Daniel A. Pope Kazuo WatanabeRichard A. Charles* Paul R. Puckorius Ronald E. Wood*Daryn S. Cline* James L. Raber Thomas L. WhiteEric A. Delaubenfels*G13HQRWHV PHPEHUV RI YRWLQJ VWDWXV ZKHQ WKH GRFXPHQW ZDV DSSUR
17、YHG IRU SXEOLFDWLRQCONTENTS$6+5$( *XLGHOLQH 0LQLPLLQJ WKH 5LVN RI /HJLRQHOORVLV $VVRFLDWHG ZLWK %XLOGLQJ :DWHU 6VWHPVSECTION PAGE1 Purpose 22 Scope . 23 Ecology of Legionella . 24 Potable and Emergency Water Systems 35 Heated Spas. 56 Architectural Fountains and Waterfall Systems 77 Cooling Towers I
18、ncluding Fluid Coolers (Closed-Circuit Cooling Towers) and Evaporative Condensers 78 Direct Evaporative Air Coolers, Misters (Atomizers), Air Washers, and Humidifiers 109 Indirect Evaporative Air Coolers. 1210 Metalworking Systems 1311 Monitoring for Legionella 1312 References . 14Annex A: Bibliogra
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