hollerg
Chemical
- Mar 22, 1999
- 97
I have a new 10" rupture disk tail pipe to route, and specified it must be above the nearest building eve by 10 feet, and if an eve was within 20 ft, I requested the line be routed up past that higher roof eve on the "penthouse". I did it to maximize dispersion, for high velocity outflows and keep slow residual fumes from coming back down to grade between the buildings. I am receiving a lot of pushback, as if this is not needed and should only be justified by dispersion modeling.
It was my understanding that typical dispersion modeling was not intended to determine if such a penthouse could be ignored. fyi -- The penthouse is 40'W x40'D x 15'H and flush to the long wall on a 200' x 150' x 25' gable roof warehouse. Parallel to this wall about 50 ft away is a control room, some tanks, pipe rack and at the end of the wall, a smoke shack, so people go back and forth along this wall.
I realize I need a dispersion model to know where health effects, can reach, but is it meant to handle the situation described?
It was my understanding that typical dispersion modeling was not intended to determine if such a penthouse could be ignored. fyi -- The penthouse is 40'W x40'D x 15'H and flush to the long wall on a 200' x 150' x 25' gable roof warehouse. Parallel to this wall about 50 ft away is a control room, some tanks, pipe rack and at the end of the wall, a smoke shack, so people go back and forth along this wall.
I realize I need a dispersion model to know where health effects, can reach, but is it meant to handle the situation described?
