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richard.harvey
I have a project in an Artic environment where the Owner has a large pond they would like to use for their fire water source. Question regarding fire water reliability evaluation per NFPA 11, A4.2.1.1, recycled water, process water or grey water can be utilized in foam production providing the water quality is suitable. In addition, NFPA 24,… (Show more)
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j_w_hines
For an existing conference room where the Architect required adding an outlet, the plan check person has required outlets as per this article, which requires quantity as in a residence.  In addition, it requires floor receptacles for each 215 square feet of room.   For one room, it is smaller and has doors each wall, as code does not restrict,… (Show more)
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ccoache
Click to view contentI often get questions on which standard, equation or computer program should be used to calculate the incident energy when the incident energy analysis method is used. Some argue that the information should be in NFPA 70E, Standard for Electrical Safety in the Workplace or they use the Annex D equations without understanding their applicability.… (Show more)
in NFPA Today
chong
I would like to check with regards to the underground, above ground and sprinkler piping to be used.   Is there a requirements to use Galvanized piping for fire ring main hydrant system as per NFPA guide lines? Are cement lined pipes recommended as water authorities generally require ductile iron for underground pipes? As for Galvanized Iron (GI)… (Show more)
in Fire Protection Systems
abircuet2010
Hi guys, Consider a shed having only roof is using for dining. All sides are open to enter and exit. Is it mandatory to have both automatic detector and Manual Call point or only manual call point is enough???
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jamila
Hello Dear Community,   I have a question with regards to the following interpretation of a Code in NFPA 13 - 2013 Edition:   8.17.4.6.2 Retroactive Installation. When backflow prevention devices are to be retroactively installed on existing systems, a thorough hydraulic analysis, including revised hydraulic calculations, new fire flow data, and… (Show more)
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pseabolt
Fire Collars At what size pipe would a fire collar be required?  I cannot find a code reference in LSC chapter 8 or IFC.  I did find some commentary from the ICC but it only stated that anything greater than 3 inches, check the system.
in Building & Life Safety
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ian.power
I have a storage arrangement that has been difficult to classify. Many of my colleagues have drawn different conclusions for a variety of reasons.   The storage arrangement in question is raw potatoes in plastic totes (an empty tote weighs 200 lbs and when full of potatoes weighs 2,000 lbs - 10% plastic by weight and less than 5% by volume when… (Show more)
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mdemps3
Does NEC 680.7 apply to factory and field installed lugs, the way I read it is the first sentence would apply to factory lugs and the second sentence would apply to field installed lugs. 
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cthompson
Each year as summer turns to fall, we see an uptick in home fires from increased heating device use, cooking, and other everyday activities. We know more about how to protect ourselves from fire than ever, but there are still situations that highlight opportunities to do more. Last week, Jefferson County suffered a tragic loss, when a mother and… (Show more)
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pwk@kraemerkoating.com
Hi,   I work for an equipment manufacturer.  For a machine we are building, I have a VFD for an Exhaust Blower that requires 480 VAC 3-phase 6 amps.  The VFD is designed so that it can be mounted on a wall without having to be inside an electrical enclosure.  Typically, the exhaust blower is located inside a building.  In these cases, I provide a… (Show more)
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gonzalesj
Hello,  The backup generator for one of the data centers in my area has "thrown a rod" as reported by the owner.  They do not have a timeline just yet for getting it replaced.  This generator is the back up for the fire pump.  What advice does the cadre have for how to proceed?  Thanks in advance.    Jason
in Building & Life Safety
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lisamariesinatra
County commissioners, firefighters, and community members in Hartsville, Tennessee were able to see firsthand last week the value of residential fire sprinklers when representatives from the National Fire Sprinkler Association (NFSA) brought a side-by-side burn and sprinkler demonstration trailer to town to promote requiring sprinklers in new… (Show more)
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