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ASHRAE Seeks Third Round of Comments on Legionella Guideline 12

ASHRAE is seeking a third round of public comments on ASHRAE Guideline 12- 2000R, Proposed Revision of Guideline 12-2000, Managing the Risk of Legionellosis Associated with Building Water Systems. Guideline 12 is open for a 45-day public review until Dec. 17. Those interested in reviewing and commenting on the guideline can do so through the ASHRAE Online Comment Database. In this Independent Substantive Change public review draft, only revisions in strikethrough and underlined are open for comment.

The purpose of ASHRAE Guideline 12 is to provide information and guidance to assist in control of legionellosis associated with building water systems. It also provides guidance useful in the implementation of ASHRAE Standard 188, “Legionellosis: Risk Management for Building Water Systems.”

ASHRAE Guideline 12 is intended for use by owners of human-occupied buildings and those involved in the design, construction, installation, commissioning, management, operation, maintenance and service of centralized building water systems and components.

The Centers for Disease Control and Prevention estimates there are between 8,000 and 18,000 cases of Legionnaires’ disease in the United States each year, with more than 10 percent of the cases fatal. Most are the result of exposure to legionella associated with building water systems.

For more information and to comment, visit ashrae.org/publicreviews.

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