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
Codes and Standards | Apr 6, 2022
ABC and AFSP form partnership on mental health and suicide prevention in construction
Associated Builders and Contractors and the American Foundation for Suicide Prevention recently formed a partnership to address mental health and suicide prevention in the U.S. construction industry.
Codes and Standards | Apr 5, 2022
New York City chooses 20 firms for architectural design services on future public building projects
The New York City Department of Design and Construction (DDC) has contracted with 20 firms to provide architectural design services for the city’s future public buildings projects under the latest round of DDC’s Project Excellence Program.
Codes and Standards | Apr 4, 2022
Construction of industrial space continues robust growth
Construction and development of new industrial space in the U.S. remains robust, with all signs pointing to another big year in this market segment
Legislation | Apr 1, 2022
American Bird Conservancy doubles capacity to test bird-friendly glass
American Bird Conservancy (ABC), working with Washington College in Maryland, says it has doubled its capacity to test and rate glass and other materials for their ability to deter bird collisions.
Modular Building | Mar 31, 2022
Rick Murdock’s dream multifamily housing factory
Modular housing leader Rick Murdock had a vision: Why not use robotic systems to automate the production of affordable modular housing? Now that vision is a reality.
Legislation | Mar 31, 2022
Bill in Washington State would fund seismic retrofits in schools
A bill recently passed by the Washington State Senate could unleash hundreds of millions of dollars for school seismic retrofits over several years.
Legislation | Mar 30, 2022
Wisconsin legislators expand the scope of interior design in the state
Legislators in Wisconsin passed a bill, quickly signed into law by the governor, that codifies holistic interior design legislation and significantly expands the scope of interior design in the state.
Legislation | Mar 28, 2022
LEED Platinum office tower faces millions in fines due to New York’s Local Law 97
One Bryant Park, also known as the Bank of America Tower, in Manhattan faces an estimated $2.4 million in annual fines when New York City’s York’s Local Law 97 goes into effect.
Codes and Standards | Mar 24, 2022
New York senate moves to speed up fossil fuel ban in new buildings
Lawmakers in the New York State Senate are backing a proposal to ban fossil fuels in new building construction three years sooner than a plan proposed by Gov. Kathy Hochul.
Codes and Standards | Mar 23, 2022
High office vacancies have cities rethinking downtown zoning
As record-high office vacancies persist in U.S. urban areas, cities are rethinking zoning policy.
