Corrosion in sprinkler system piping can be a costly problem if leaks occur, causing damage to the interior of a structure, according to Matt Klaus, Principal Fire Protection Engineer with the National Fire Protection Association.
Replacing piping is no small expense, either. Corrosion can also cause blockages in the piping network, which can lead to an ineffective sprinkler system during a fire.
Corrosion can take on many forms, including oxidation, microbiologically influenced corrosion, and galvanic corrosion. The technical committees responsible for NFPA 13, Installation of Sprinkler Systems, have been looking at ways to eliminate or reduce corrosion in sprinkler systems for several revision cycles.
Reducing corrosion in dry systems can be achieved by eliminating all of the water from these systems after testing/activation and using alternative gases like nitrogen for charging these systems. For wet systems, limiting the amount of air in the system is the goal. Air trapped in pressurized sprinkler system piping results in an increase in the concentration of dissolved oxygen in the piping, enabling corrosion. Venting the trapped air in a wet system reduces this problem, so a revision to the wet system sprinkler system standard requires that a single air vent be installed for each system.
Depending upon the building geometry and sprinkler design, it is possible to trap air in many locations in the system, meaning a single vent may not be effective. Therefore, some stakeholders believe that the requirement adds cost to the property owner and the design team without any assurance that there is a long-term benefit to the system.
Related Stories
AEC Tech | Feb 20, 2024
ABC releases technology guide for AI in construction
Associated Builders and Contractors has released an artificial intelligence (AI) technology guide for the U.S. construction industry. AI in Construction — What Does It Mean for Our Contractors? outlines definitions, construction use cases, and considerations for the implementation of AI in construction.
Codes and Standards | Feb 20, 2024
AISC, AIA release second part of design assist guidelines for the structural steel industry
The American Institute of Steel Construction and AIA Contract Documents have released the second part of a document intended to provide guidance for three common collaboration strategies.
Sports and Recreational Facilities | Feb 19, 2024
Sports stadium developers sweeten projects with affordable housing to gain support
In recent years, sports stadium developers have been including affordable housing in their projects to win support from local governments and community activists.
MFPRO+ News | Feb 15, 2024
UL Solutions launches indoor environmental quality verification designation for building construction projects
UL Solutions recently launched UL Verified Healthy Building Mark for New Construction, an indoor environmental quality verification designation for building construction projects.
MFPRO+ News | Feb 15, 2024
Nine states pledge to transition to heat pumps for residential HVAC and water heating
Nine states have signed a joint agreement to accelerate the transition to residential building electrification by significantly expanding heat pump sales to meet heating, cooling, and water heating demand. The Memorandum of Understanding was signed by directors of environmental agencies from California, Colorado, Maine, Maryland, Massachusetts, New Jersey, New York, Oregon, and Rhode Island.
MFPRO+ News | Feb 15, 2024
Oregon, California, Maine among states enacting policies to spur construction of missing middle housing
Although the number of new apartment building units recently reached the highest point in nearly 50 years, construction of duplexes, triplexes, and other buildings of from two to nine units made up just 1% of new housing units built in 2022. A few states have recently enacted new laws to spur more construction of these missing middle housing options.
Green | Feb 15, 2024
FEMA issues guidance on funding for net zero buildings
The Federal Emergency Management Agency (FEMA) recently unveiled new guidance on additional assistance funding for net zero buildings. The funding is available for implementing net-zero energy projects with a tie to disaster recovery or mitigation.
Codes | Feb 9, 2024
Illinois releases stretch energy code for building construction
Illinois is the latest jurisdiction to release a stretch energy code that provides standards for communities to mandate more efficient building construction. St. Louis, Mo., and a few states, including California, Colorado, and Massachusetts, currently have stretch codes in place.
Modular Building | Jan 19, 2024
Virginia is first state to adopt ICC/MBI offsite construction standards
Virginia recently became the first state to adopt International Code Council/Modular Building Institute off-site construction standards.
Modular Building | Jan 19, 2024
Building with shipping containers not as eco-friendly as it seems
With millions of shipping containers lying empty at ports around the world, it may seem like repurposing them to construct buildings would be a clear environmental winner. The reality of building with shipping containers is complicated, though, and in many cases isn’t a net-positive for the environment, critics charge, according to a report by NPR's Chloe Veltman.
