FPEC offers numerical simulation for disasters in inside of building

FPEC performs simulation for disasters not only outdoor but also inside of the building. such as explosion, fire spread, smoke generation and dispersion, leakage and gas dispersion.

FPEC has deep knowledge and abundant experience about petrochemical plant disasters and fire prevention systems, which allow us accurately understanding on what a customer is requesting us and reflecting them in the numerical analysis model. We will discuss with a customer with technical terms commonly used in petrochemical plants, not only with technical terms specific to numerical analysis.

In addition to the standard output such as movies and gradation maps like below figure-1, we also submit in a contour map as below figure-2 , that makes it easy to use the simulation results.
Our proposed concentration map is created by AutoCAD, based on the calculation results obtained by numerical analysis. 

Each color shows a range above a certain level of the concentration and is very clear, so we think it is very effective in use. 

 

Fig.1．gradation map

  

Fig2．contour map by FPEC

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Disaster Simulation in Series

We, FPEC can carry out disaster simulation in series on the sequence from the initial events, such as leakage and evaporation to gas diffusion, fire and explosion, and can evaluate the Severity of each disaster.
The following is the sample list of the evaluation item per each step of disaster scenario.

Disaster
Scenario		 Leak from
Sphere Tank		 Crude Oil Tank
Full Surface Fire		 Leak from Pressure Vessel
storing Toxic Gas
Contents

Leakage is occurred.
(calculate the
volume of
leakage and
evaporation gas)

Gas Diffusion
(calculate the area that
concentration of gas will be larger than
50% of LEL -
as the area in danger of
flash fire)

Ignited and flash fire
is occurred.
(calculate the area
enveloped by the flash fire)

As the result of back fire,
dike fire is occurred.
(calculate heat flux level
from fire)

Fail to extinguish the fire
and BLEVE is occurred.
(calculate the range of
pressure wave and area
in danger of spreading debris)

Fireball is occurred.
(calculate the heat flux from
the fireball)

Full surface fire
is occurred.
(calculate heat
flux level
from fire)

Fail to extinguish the fire
and boil-over is occurred.
(calculate the time of
boil-over and remaining volume of oil at
the boil-over)

Calculate the heat
flux level
from boil-over
and area of
splashing fired oil

Leakage is occurred.
(calculate the volume
of leakage and evaporation gas)

Gas Diffusion
(calculate the concentration of
gas as ppm, LEL,
or odor level
by each time step)

 

Also for VCE (Vapour Cloud Explosion), we can evaluate the Severity of pressure wave based on the scenario.
We also can conduct QRA to extract disaster scenario of high risks, and according to the scenario, we will carry out the evaluation of its Severity.

Dispersion Simulation Program awarded in Kanagawa Prefectual Government.

Our Dispersion Simulation Program is capable of simulating the dispersion of gas which may have a harmful effect to human body.

We recently added a new function of radioactive material dispersion to our program.
This program has been recognized and used by Kanagawa Prefectural Government from 2015. 

Article of Prediction of Hot Zone behavior to Boilover was published in "The CATALYST January 2015"

FPEC have created a simulation program for analysis of boil-over mechanism in the event of a crude oil fire in large tank. We have developed a program capable of predicting hot zone temperature and expansion ratio. Furthermore, we can also predict the cool down time requirement of the hot oil and also possibility of boil-over after extinction of a crude oil tank fire.

The article of our new study was published in "The CATALYST January 2015".

Refer to the article from here. 

FPEC developed a new program for calculating the required pressure for pig cleaning of a pipeline.

We have developed a program which calculates the required pressure at the pig launcher for pigging system of the pipe line. Pig cleaning (pigging) means to clean the internal pipeline or to replace fluid A with fluid B in the pipeline by pushing a pig between the fluid A and B.  We believe that by using our program the required pressure to transfer the pig can be obtained in advance, which will be useful to planning the system constitution and its operation.

Our program is also designed, to fit a number of various cases such as flashing of gas pipeline, emptying a pipeline with air, cleaning with air, water or oil, replacing with a different fluid, hydrostatic testing operations to allow the pipeline to be filled with water. Furthermore this program is capable of handling the control pressure of the pig receiver.

If you are interested in our program or need to do pressure calculation for your pig cleaning, please contact us. 
Refer to the page from here.

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