The National Fire Protection Association (NFPA®) has released the 2014 edition of NFPA® 25 – Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems. The 2014 edition of NFPA® 25 has many changes since the last edition. Dyne Fire Protection Labs is highlighting the changes that are in relation to foam and antifreeze solutions to ensure our customers are aware of the new standard, and help them understand the impact of these changes. Please note, this article does not identify all the changes to NFPA® 25. If you have any questions regarding this standard, view the standard at www.NFPA.org.

One major change that occurred in relation to all water-based fire protection systems is what is permitted for records. The 2014 edition of NFPA® 25 allows for records to be kept electronically. The records must indicate the following - activity performed, required frequency of the activity, results, date, and contact information for the organization that performed the activity.

NFPA® 25 redefined the term for a foam discharge device. This new definition can be found in section 3.3.14 of the 2014 edition of NFPA® 25.

NFPA® 25 recommends the water surrounding the bladder in a foam system be inspected for the presence of foam. See section 1.2.935.2.2.

NFPA® 25 has made several changes to systems involving antifreeze solutions. The definitions of an antifreeze sprinkler system, premix antifreeze solution and freeze protection were redefined. The definitions can be found in sections 3.6.4.1, 3.6.4.1.1 and 4.1.2 respectfully. These redefined definitions provide clarity on the use of antifreeze systems. Such as what an antifreeze sprinkler system is designed to do, what makes antifreeze solutions work (freeze protection), and what is an acceptable premix antifreeze solution.

NFPA® 25 also states that antifreeze solution must be tested annually before the onset of freezing weather. This is to ensure that an antifreeze system has a premix antifreeze solution that is mixed at the correct concentration and that it has an acceptable freeze point. If the antifreeze solution is found to be mixed at the incorrect concentration or the results indicate an incorrect freeze point, the system should be drained and replaced with an acceptable premix antifreeze solution. Please note, NFPA® 25 stresses that every attempt to recycle the antifreeze solution with the antifreeze manufacturer should be made before disposing of any solution.

Below is a list of antifreeze solutions and when they can be used per NFPA® 25 – Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems, 2014 edition.

Antifreeze Solution When Can it be Used?
Diethylene Glycol Prohibited
Ethylene Glycol Prohibited
Propylene Glycol Propylene Glycol Prohibited for use in CVPC
Allowed in non-CVPC piped systems under the following conditions:
In systems installed prior to September 30, 2012:
• Cannot exceed 40 percent by volume
• Systems with concentrations greater than 30 percent by volume will be permitted based upon a risk assessment described in 5.3.4.2.1.
Glycerine Allowed in both CPVC and non-CPVC piped systems but only under the following conditions:
In systems installed prior to September 30, 2012:
• Cannot exceed 50 percent by volume
• Systems with concentrations greater than 38 percent by volume will be permitted based upon a risk assessment described in 5.3.4.2.1.
Listing Antifreeze Solutions for Systems introduced after September 30, 2012 Must have factory premixed antifreeze solutions
Listed Antifreeze Solutions for Systems introduced prior September 30, 2012 Systems have until September 30, 2022 to become compliant in regards to listed antifreeze solutions

Dyne Fire Protection Labs offers the following services to help you comply with NFPA® 25

• Class A and Class B Concentrate Foam Testing
• Solution Foam Testing
• Proportioning Verification
• Antifreeze Solution Testing
• Bladder Water Testing for Foam Concentrate

All our services include private and secure electronic record keeping and 24-hour access to your test results through theDyne Fire Protection Labs, LLC on-line database.

Dyne Fire Protection Labs

2357 Ventura Drive, Suite 108
Woodbury, MN 55125
Phone: 651-917-0644
Fax: 651-917-0646
Toll Free: 800-632-2304
 

Dyne Fire Protection Labs

2357 Ventura Drive, Suite 108
Woodbury, MN 55125
Phone: 651-917-0644
Fax: 651-917-0646
Toll Free: 800-632-2304
 

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