Sprinkler System Pressure Gauges

Q: My question has to do with the pressure gauges for our fire sprinkler system. We just had some out of date pressure gauges replaced by a new sprinkler contractor. They removed the 3 1/2 inch gauges and replaced them with 2 inch gauges. Upon further inspection I noticed that the gauges had no UL or FM listing. They have on the back a CRN aka Canadian Registration Number. Can this type of gauge be used?

A: The Canadian Registration Number (CRN) is a number issued by each province or territory of Canada for the design of a boiler, pressure vessel or fitting. The CRN identifies the design has been accepted and registered for use in that province or territory. You are in Florida, so there is no requirement in the USA for a CRN. According to NFPA 13-2010, the standard on the installation of sprinkler systems, section 8.17.3.3 says the pressure gauges must be listed and must have a maximum limit not less than twice the normal system working pressure at the point where installed. It is apparent that the Canadian Registration Number is not the same as a listing from an independent testing laboratory, so I would say the gauges that were installed at your facility would not be acceptable.

Brad Keyes
Brad Keyes, CHSP

Brad is a former advisor to Healthcare Facilities Accreditation Program (HFAP) and former Joint Commission LS surveyor. He guides clients through  organizational assessment; management training; ongoing coaching of task groups; and extensive one-on-one coaching of facility leaders. He analyzes and develops leadership effectiveness and efficiency in work processes, focusing on assessing an organization’s preparedness for a survey, evaluating processes in achieving preparedness, and guiding organizations toward compliance. 

As a presenter at national seminars, regional conferences, and audio conferences, Brad teaches the Keyes Life Safety Boot Camp series to various groups and organizations. He is the author or co-author of many HCPro books, including the best-selling  Analyzing the Hospital Life Safety Survey, now in its 3rd edition. Brad has also authored a variety of articles in numerous publications addressing features of life safety and fire protection, as well as white papers and articles on the Building Maintenance Program. Currently serving as the contributing editor of the monthly HCPro newsletter Healthcare Life Safety Compliance  gives Brad further insight into the industry’s trends and best practices.