Hello Experts, Can anyone help me out with Types of Fire Protection and detection system used in Road Tunnels / Metro Tunnels with NFPA codes and standards to be followed. Hope for prompt responses. Regards! Rehan
Hello my question is regarding the applicability of NFPA 30 to a class IIIA combustible liquid. Suppose my mixture's flashpoint is at 150 degrees F. So it's not a "flammable liquid" under NFPA classification but only a "combustible liquid". I am reading that NFPA 30 requirements apply to storing liquids that are both combustible and flammable. If… Show more
Looking at the Administration Chapter of the 2018 NFPA 30 and the information provided, the storage, handling, and use of that liquid should comply with the provisions of NFPA 30. The word "and" in the context of sentence in Section 1.1 is not a noun to be used as a logical operator that requires both of two inputs to be present or two…
would a hangar consturcted out of PEMB with a SF area of 16,250 SF, an office space within the hangar of 1,800 SF and an eave height of 35ft...be considered a Group 2 or Group 3 hangar?
How does a company get their product certified in regards to the NFPA 1192 standard?
Good Day, In the process of setting appropriate safe work conditions for use on various pieces of electrical equipment, the team at my organization has uncovered some questions on appropriately applying the 50 V threshold for de-energized work. Is anyone aware and willing to share the rationale behind the selection of 50 V as the… Show more
The reason NFPA (and OSHA) reference the value >50V is because it takes more than 50V (AC or DC) to "push" the current through you. Example; a car battery has 80+ cranking Amps, 12-14V DC, nobody has been electrocuted from a car battery however, 'crow barring' across the terminals with a screw driver causes an arc flash throwing people to the…
Can we connect electric Siren with fire alarm system????
Sure - A fire alarm system should be able to activate a siren by interfacing it as long as the required other alarms that are directly wired to the system comply with NFPA 72. This way the siren does not have to listed equipment for use in the fire alarm system. The extra noise will surely be noticed.
Is it required to install a sprinkler head in a small telecommunication closet (not located in a residential building)? Is there a minimum size to be considered according to NFPA 13? Aside of residential occupancies, I cannot find anything in regards to it in NFPA 13.
In regards to fire watches in a hospital setting, what exactly are they looking for in establishment of a temporary water supply.#lifesafety
It seems it would depend on what is causing the water to be shut off to either the entire fire sprinkler system or just part of the system. The fundamental provisions from NFPA 25 are centered around a time-based threshold and do not require any special measures from the impairment coordinator until a fire protection system has been out of…
Good Afternoon, When removing covers from electrical panels but leaving the deadfront in place are employees required to wear Arc Flash protection and follow approach boundaries? This is commonly done for visual investigation. I understand that employees must be protected from exposed energized parts. The definition of Exposed (as applied… Show more
In my years as an industrial electrician I have had the opportunity to witness first hand the hazards that sometime lurk behind seemingly innocent panel covers. I would add that potential hazards do exist behind covers whether screwed, bolted, or hinged. Even in well maintained facilities incidents can and do occur. When workers are…
This Plant is used for producing Cans It consists of an oven and extrusion machine and painting machines (spray) The Production Area = 3500 M2 The height of the Production Area is 11 m The number of lines is 4 lines
Hi, sorry for my poor speling in advance, NFPA 101, NFPA 5000, and NFPA 69 regulates the safty in industrial, storage high hazard buildings, if you have an color spray mashine or an oven, that would be a high hazard part of an proces. In NFPA 101 is mandated local automatic fire extingushment like a lokal in oven automatic mist type or a gas…
Red triangle Stickers are often pasted on the window of tall buildings as firemen access. My question is, In this technological era, do you think the firemen must break the glass window with a hammer to save people? Is there any new technology to open the windows from the outside? What if this was in a hospital NICU ward? How effective is pasting… Show more
Deborah has brought up a good point about windows. 2015 NFPA 101 has defined this situation as a limited access structure and has provisions in Section 11.7. I have seen exterior windows for mental hospitals use laminate glass or other glass that can not be broken and security door openings not readily openable. The windows in the photo look…
For Commercial Kitchens, are Walk-In Coolers and Dry Storage considered occupied space and if so, is the occupancy 500SF/Person? (2018 NFPA 101 Table 18.104.22.168 Storage Use for other than Mercantile Occupancies)
Load more items
Conductors in a cable tray are installed per 392.80(A)(2)(d) and both ends of the conductors emerge from the cable tray and terminate in equipment with 75C rating. Since the conductors are installed per 392.80(A)(2)(d), with proper spacing then, Table 310.15.(B)(20) can be applied, but when the conductors exit the cable tray to terminate in… Show more