API RP 581 - 3rd Ed.2016 - Add.2-2020 - Risk-Based Inspection Methodology

3-60 API RECOMMENDED PRACTICE 581
Table 4.12M—Gas Release Toxic Consequence Equation Constants for Ammonia and Chlorine
Continuous Releases Duration
(minutes)
Ammonia
Chlorine
e f e f
5 636.7 1.183 3,350 1.097
10 846.3 1.181 3,518 1.095
15 1,053 1.180 3,798 1.092
20 1,256 1.178 4,191 1.089
25 1,455 1.176 4,694 1.085
30 1,650 1.174 5,312 1.082
35 1,842 1.172 6,032 1.077
40 2,029 1.169 6,860 1.072
45 2,213 1.166 7,788 1.066
50 2,389 1.161 8,798 1.057
55 2,558 1.155 9,890 1.046
60 2,714 1.145 10,994 1.026
Instantaneous Releases 2.684 0.9011 3.528 1.177