Hi,
I have some equally spaced point of a fire pump curve (flow rate-pressure). The data-sheet doesn't show the rated capacity. Is there a way to analytically find it? How the producer of fire pump determine it, once the experimentally obtain the pump curve?
Thanks
I asked this because I was wandering if someone perform test such as doorfan test in the stairwell before the design. I was wandering if it is a best practice
Hi all,
Designing a stairwell pressurized with the use of NFPA 92A, there is this table which represents the Leakage Areas of buildings. I particulary appraciate the fact that reference are presented, but I have a question: how can I say if a wall is tight average or loose? Is the choice of...
Hi,
the risk R can be estimated by the formula:
R = M*P
where M is the Magnitude and P is the Frequency.
I have two questions now:
1. Does the magnitude depends on the objective of the Analysis, if the Analyisis has as objective the Life Safety, than the M can be quantified in death, if the...
I am trying to understand how, once all the branches of the Event Tree Analysis are defined, it is possible to decide if a fire scenario should be analysed with a simulation. I don't know an 'a priori' criterion to quantitatively assess the damage (deaths or money), and I don't know which...
I completely agree, you pointed out something that I didnt' noticed reading my reference book of fire risk assessment.
It refers to probability placing in parenthesis "per year" and than it did not place any unit. Suqsequently it identifies f (which I assume is the frequency) as a value with...
I am reading a paper about a Failure Tree Analysis. When I was at university I did a course where the FTA was presented and we worked directly on the probability using the logic gates AND/OR.
In this paper they work on the failure rates. At the beginning I thought that the failure rate and the...
I have asked to some vendors, the price are about 40k in Italy. It seems to me a very high price. The prices on Alibaba are far lower. Do you think that there are opportunities to find lower prices somehow, maybe at exposition or at conferences?
Hi all,
does someone know the order of magnitude of the cost of an apparatus for thermogravimetrics analysis TGA ? I have seen that these kind of analyses are relatively cheap. The companies that sell this apparatus do not show publicly the price.
Hi all,
I am using the NFPA 2001 and I am sizing a IG 55 system, I was wondering if the reserve cylinders are mandatory.
The Annex A in the clause A.4.1.1.2 says "An extra-full complement of charged cylinders (connected reserve) manifolded and piped to feed into the automatic system should be...
Of course, I have already checked this site. I wrote in my question "I found some link but they redirect to the nist web site and searching on the nist website I did not find the software", that link was one that I have already checked and that redirect to the nist website. I usually search on...
Hi all,
I am trying to predict the downwind distribution of smoke particulate and combustion products from large outdoor fires. I have to do this using ALOFT-FTTM (A Large Outdoor Fire plume Trajectory model - Flat Terrain), but I cannot find this program on the web, I found some link but they...
Hi all,
I would like to calculate the pulling of a chimney (already installed). This chimney is connected to a pellet stove with a nominal thermal power of 17 kW.
The chimney is in stainless steel 316 L, Diameter DN 130. Its height is 9 meter and in the path there are nine 45° elbow.
Could...
Thank you LCREP, but for some reasons I cannot interface directly with FM, so I ask again if someone have experience of load track station protection with FM
Hi all,
sorry if it is a little bit off topic, but I have questions about FM 7.88.
I am designing a tank farm protection, in particular since the spacing to load/unload station from the diesel tanks is inadeguate I have to design a load/unload station protection.
In the FM 7.88, clause 2.4.2.9...
