How to calculate the lethality levels associated with flammable or toxic compounds (fires, explosions, toxics etc.) are well documented and available in various sources. The OGP document on consequence modelling is a good one (available from www.ogp.org.uk/pubs/434-07.pdf)
if i want to simulate a leak in a splitter column of propane and butane knowing that the tempreture of the bottom is different from the head temperature and also the composition of the product ( propane in the head and butane in the bottom) how should i proceed to that
Phast has a large database of materials to choose from. It is for the user to choose the most appropriate material to represent the release. Phast also has a multi-component model, which can be used for complex mixtures.
You can determine easting and northing coordinates from systems such as Google Earth, or you may find them on plot plans. You can also simply define these coordinates using your own coordinate system (e.g. with the origin 0,0 at a point defined by you). Alternatively, after inserting a map, you can insert equipment directly on the map, without the need to specify the coordinates.
In Phast you have access to Multi Energy (ME), (BST) or TNT explosion models. ME requires specification of the TNO curve number to represent the explosion, along with either the confined volume or confined fraction. BST requires flame speed to be defined or calculated based on inputs on direction of flame speed expansion, obstacle density and fuel reactivity. TNT requires explosion efficiency - and the software will determine a mass of TNT equivalent to the effective flammable mass in the cloud. With a 3D explosion extension licence, users can define congested regions on the map, and the software will automatically determine flammable mass based on calculated overlap of dispersion clouds with congested regions .
A tutorial document is provided with the software which covers the fundamentals of doing a dispersion analysis in Phast (of which Vent Stack dispersion is a specific example). We would suggest consulting this document. We also offer online training courses on how to use Phast to solve various problems. Read more here www.dnvgl.com/software/training-phast-safeti.html.
how to input coordinate data in geometry after raster image. Are Widht and length values for the facility?
Hi, Can you add tutorial for Buried Pipeline?
quel sont les produits assimilable pour modéliser les effets de: essence super, essence sans plomb et gasoil?
how to decide which lethality level % is most suitable for a particular chemical release scenario ?
How to calculate the lethality levels associated with flammable or toxic compounds (fires, explosions, toxics etc.) are well documented and available in various sources. The OGP document on consequence modelling is a good one (available from www.ogp.org.uk/pubs/434-07.pdf)
if i want to simulate a leak in a splitter column of propane and butane knowing that the tempreture of the bottom is different from the head temperature and also the composition of the product ( propane in the head and butane in the bottom) how should i proceed to that
You should break the column into two sections, one can be release from the column top and one from column bottom
what are the assimilable products to model the effects of: premium gasoline, unleaded gasoline and diesel?
Phast has a large database of materials to choose from. It is for the user to choose the most appropriate material to represent the release. Phast also has a multi-component model, which can be used for complex mixtures.
hello ,
i have a new component , let say naphta or kerozene , where can I find those types of component
Hi Krimo, You may find more useful information at our Phast FAQ page here: www.dnvgl.com/software/FAQ/faq-Phast.html
how found these coordinates and I didn't understand why you changed the geometry coordinates
You can determine easting and northing coordinates from systems such as Google Earth, or you may find them on plot plans. You can also simply define these coordinates using your own coordinate system (e.g. with the origin 0,0 at a point defined by you).
Alternatively, after inserting a map, you can insert equipment directly on the map, without the need to specify the coordinates.
@@dnvsoftware I chose a single point of raster image
I chose a single point of raster image
how do you chose parameters for every explosion model
In Phast you have access to Multi Energy (ME), (BST) or TNT explosion models. ME requires specification of the TNO curve number to represent the explosion, along with either the confined volume or confined fraction. BST requires flame speed to be defined or calculated based on inputs on direction of flame speed expansion, obstacle density and fuel reactivity. TNT requires explosion efficiency - and the software will determine a mass of TNT equivalent to the effective flammable mass in the cloud.
With a 3D explosion extension licence, users can define congested regions on the map, and the software will automatically determine flammable mass based on calculated overlap of dispersion clouds with congested regions
.
How to do a vent stack analysis kindly explain
A tutorial document is provided with the software which covers the fundamentals of doing a dispersion analysis in Phast (of which Vent Stack dispersion is a specific example). We would suggest consulting this document. We also offer online training courses on how to use Phast to solve various problems. Read more here www.dnvgl.com/software/training-phast-safeti.html.
can i print the effects on phast
All graphs in Phast can be exported to file, where you can then print them.
Thanks for generousness
pelas help my what many interodise new compoment
many parametre they diffucit
Hi Krimo, You may find more useful information at our Phast FAQ page here: www.dnvgl.com/software/FAQ/faq-Phast.html
Prix du logiciel
Hi, please contact us via www.dnvgl.com/software/contact/request-information-phast.html