Code edition evolved is Life Safety101, 2009. I have an existing building, non- sprinkled and not fire alarmed, that has multiple business occupancies, no other occupancies involved. It is 2 stories in height and is a Type V (000) construction type. The building’s main entrance has a foyer with a stair located in the center of the building. On… Show more
I work in a 34.5 Kv plant. We must to calculate the incident energy but we don´t know what is the most appropriate method. Some people have told me about the "IEEE 1584: Guide for performing arc flash calculations" but this guide calculate for 208 v to 15 Kv. Help please,
It is common to see these HV (or MV) and LV installations in many plants. It is important to understand the specifics of the plant to determine which oprion is best. Even when multiple oprions are applicable, interesting dynamics exist, look at one of our blogs (OSHA 1926 Subpart V Differs With NESC 2017 On Arc Flash Calculations : e-Hazard…
Is there a resource for determining what group a combustible material belongs to if it is not listed in NFPA 497, Table 4.4.2. In this instance: 4-Ethyltoluene 1,2,4-Trimethylbenzene 1,3,5-Trimethylbenzene
The formula uses Kst, Filter Volume & Pred to calculate a pressure developed. This is applied to the number of vents in a system. The idea being to find a weight in Kg/m2 that a deflagration panel may have before the size must be compensated. Without detailed knowledge of the background of the equation I cannot confirm my hunch that there is a… Show more
Hi Mitchel, Thank you for your answer. I had not considered that the rotational velocity was the important factor. It makes sense that if the rotational velocity is constant and the panel is assumed to be square that a new panel of half the area has a longer radius and the torque needed to move it at the velocity will decrease. Thanks …
How do I apply for Firewise recognition for my community? I can't see on the site where to get started. Thank you.
Thanks so much for the question! Here's a look at the requirements to becoming a recognized Firewise site: Obtain a wildfire risk assessment as a written document from your state forestry agency or fire department. Form a board or committee, and create an action plan based on the assessment. Conduct a “Firewise Day” event. Invest a minimum of $2…
To Whom It May Concerns, I am a project manager at a final signal design unit. Could you share any interpretation information or suggestions for the article 314.28 (Pull Box Sizing). Pull box size defined as 8 x largest conduit diameter. Does it apply to all types of pull boxes/handholes? Are there any exceptions? The typical MnDOT approved… Show more
I'm wondering if there is a round logo with FPW on it like the sticker you sell?
When will the 2017 C&E Audio and Videos from the NFPA Annual Conference be available?
As per NFPA 13, Table 22.214.171.124. Temperature range for ordinary hazard is between 57°C to 77°C. What is the criteria to select between 57°C and 68°C sprinkler temperature rating for ordinary hazard?
2013 Edition NFPA 80 126.96.36.199.3 Rolling Steel Fire Doors, During a drop test on a Rolling fire door, do I have to remove the fusible link that retaining an handle break (the release devices) to drop the door, or activate the handle without removing the fusible link? the Rolling fire door is a brand new REYNOR Lawrence Doors, model FGH Series,… Show more
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Is it possible to install a remote-controlled electric main valve for emergency closing in the event of a pipe breakage. This valve will be activated from a security control room located in the same building by a preventive agent trained for this action.