Abstract: The high temperature and thermal radiation generated by fire accident on offshore platforms will have an adverse impact on adjacent equipment and facilities. Based on a crude oil generator fire accident on an offshore platform, this paper numerically simulated the fire process by using KFX software, and studied the variation characteristics of temperature, heat radiation and other parameters near the key components of steel support and oil inlet hose. Based on the temperature criterion and thermal radiation criterion, the time point and duration parameters at the critical point of temperature and thermal radiation flux were studied. It is found that the surface temperature of adjacent steel supports 2 and 3 is more than 1 600 ℃, the heat radiation flux is more than 25 kW / m2, the duration is long, the conditions of deformation and damage are reached, and the long release time of fire-fighting substances cause great impact. The heat radiation intensity at oil inlet hose C exceeds 15 kW / m2, reaching its melting failure condition. The main impact factor is that the response time of fire and gas probe is too long. The research results can provide reference for post disaster support component strength verification, response time design of fine and gas system and so on.

Key words: offshore platform, crude oil generator, fire, high temperature, heat radiation