All Simulations/result output shall be sent by email only and our offer is without interpretations/write-up

We need following data for QRA study

 Type of data


1.  Number of tanks / Area spread incase of solids / Depth in case of underground explosion of all size / depths, 


2.  Chemical Quantity stored in each tank / Only quantity incase of solids with maximum quantity stored,


3.  Specification, chemical properties and Compositions of each chemical stored / Area spread incase of solids/Depth in case of underground explosion (MSDS),


4.  Tank dimensions (Shell dimensions), tank wall thickness (Largest Thickness and Average Thickness) And MoC  


5.  Tank Maximum Pressure Operating Pressure,


6.  Pipe internal diameter for liquid, Gas, Dust, and Slurry (Main Storage Tank Outlet Pipe)  


7.  If pump is there then pump discharge pressure.  


8.  Full information of Dyke dimensions of Tanks/Group of Tanks if any. 


9.  Dominant wind orientations in 8 directions/Prevalent wind orientations Month wise Day and Night.


10. For Fn-Curve, ISO risk levels, FAR, and ALARP generic Failure frequency/year for all scenarios to be provided by you Or Non-generic Failure Frequency can also be computed by our software, the same should be accepted by you.
11. Plotting of Hazardous zone will be on google maps and location of equipments to be provided. (latitude and longitude)

12. Lethal Concentration of the chemical in ppm

Incase Maximum isopleth / at height of release concentration is lower than the lethal concentration then Conc 1, Conc 2…and so on. assumed ppm values shall be entered. 

Concentration label Concentration in ppm

13. Average population density per hectare up to 5Km.


14. Atmospheric stability class (A, B, C, D, E, F)   C (slightly unstable)

15. Percent humidity  (10% to 100%)



We need following data for Air dispersion modeling study

Type of data


1.  Stack or source height


2.  Height of simulation

  1.2 m (Default)

3.  Atmospheric stability class (A, B, C, D, E, F)

  C (slightly unstable)



5.  Stack or source Exit Internal Diameter or Spread Diameter


6.  Mixing Height  


7.  Stack or source exit Velocity (m/s). 


8.  Ambient temperature at stack height in Deg. C.


9   Percent humidity  (10% to 100%)


10.  Stack or source exit temperature in Deg. C..


11. Dominant wind orientations in 8 directions/Prevalent wind orientations Month wise Day and Night.


12. For Building Downwash- nearest Building height and width


13. Concentration ( micro gm/m3) of pollutants at stack or source Exit SO2, CO2, NO2, CO, CH4, SPM or any other maximum 6 pollutants 

Name of pollutants

Concentration ( micro gm/m3)

1. Sulpher dioxide (SOXs as SO2):


2. Carbon dioxide (CO2):


3. Nitrogen dioxide (NOXs as NO2):


4. Carbon monoxide (CO):


5. Hydrocarbons as (CH4):


6. PM 2.5:



14. Minimum Concentration ( micro gm/m3) of Dispersed pollutants required for 6-Isopleth simulations acceptable standard as per your Location (Industrial/Residential/Sensitive).  

Compute distance at given concentration in Micro grams/m3:

Concentration (micro gm/m3)

1. Concentration for Isopleth 1:


2. Concentration for Isopleth 2:


3. Concentration for Isopleth 3:


4. Concentration for Isopleth 4:


5. Concentration for Isopleth 5:


6. Concentration for Isopleth 6:


15. Plotting of concentration zone will be on google maps and location of stack/stacks to be provided. (latitude and longitude)



We shall send all result output as per your scenarios in pdf format after we receive complete data required for simulations and fee. We shall simulate as per your scenarios. Fee will be minimum 90.00 to 150.00 US$/-per simulation/result output only without interpretations/Write-up, on our advanced QRA / Stack dispersion modeling software.



9202, B-9, Masoodpur, Vasant Kunj, New Delhi (India) 110070


Skype Name :  hamsagars 

M- +91-7011163021

(We do not confirm anything on the phone, so we request you to send  emails only)