The Effect of Atmospheric Stability (Pasquil Stability) on the Distribution Radius and Concentration of CO2 Using Phast 8.22 Modeling from Oil and Gas Processing Facilities in Central Java

Zulhaman Oktareno; Edison C. Sembiring; Soehatman Ramli

doi:10.55927/cjas.v4i1.122

Penulis

Zulhaman Oktareno Universitas Sahid, Jakarta
Edison C. Sembiring Universitas Sahid Jakarta
Soehatman Ramli Universitas Sahid Jakarta

DOI:

https://doi.org/10.55927/cjas.v4i1.122

Kata Kunci:

Quality Management System, Environment, Occupational Safety And Health (SMMK3L), Productivity, Implementation, Understanding.

Abstrak

The oil and gas industry sector is one of the largest contributors to CO₂ emissions, especially in oil and gas processing facilities. One of the locations of concern is the oil and gas processing facility in Central Java, which has produced and has the largest levels of CO₂ in Indonesia. The effect of atmospheric stability (Pasquill stability) on the radius of distribution and concentration of CO₂ from oil and gas processing facilities in Central Java using PHAST 8.22 modeling. The study compared two operating conditions, normal venting and emergency venting, and examined variations in atmospheric stability (Pasquill categories A, B, and D) and wind speed against CO₂ dispersion. The results showed that emergency venting conditions produce a greater radius of CO₂ distribution than normal venting. At a concentration of 5000 ppm, the radius of CO₂ distribution reached 17.06 meters for normal venting and 21.29 meters for emergency venting under atmospheric stability category D with a wind speed of 6.25 m/s. Hot weather conditions (temperature 35°C and humidity 60%) tend to increase the dispersion of CO₂, while rainy conditions (temperature 23°C and humidity 98%) slightly reduce the dispersion. Atmospheric stability and wind speed have a significant effect on CO₂ dispersion, where more stable atmospheric conditions (Category D) result in a wider distribution radius. High concentrations of CO₂ (5000 ppm) at a spread radius of 21.29 meters have the potential to cause health impacts if exposed for a long time.

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