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

3-64 API RECOMMENDED PRACTICE 581
Chemical
Toluene
diisocyanate
(TDI)
Release
Duration
(Minutes)
Gas Release Constants
Liquid Release Constants
e f e f
3 N/A N/A 793.04 1.06
5 N/A N/A 846.54 1.09
10 N/A N/A 1,011.9 1.10
20 N/A N/A 1,026.06 1.06
40 N/A N/A 1,063.8 1.06
60 N/A N/A 1,252.57 1.03
1.5 0.8954 1.171 N/A N/A
3 1.7578 1.181 N/A N/A
Ethylene glycol
monoethyl ether
(EE)
5 4.0002 1.122 N/A N/A
10 7.5400 1.111 0.6857 1.105
20 24.56 0.971 3.6389 1.065
40 31.22 0.995 9.8422 1.132
60 59.67 0.899 23.513 1.104
1.5 0.5085 1.222 N/A N/A
3 2.9720 1.207 N/A N/A
Ethylene oxide
(EO)
5 7.9931 1.271 N/A N/A
10 47.69 1.2909 N/A N/A
20 237.57 1.2849 N/A N/A
40 1,088.4 1.1927 N/A N/A
60 1,767.5 1.203 N/A N/A
3 0.0008 1.913 N/A N/A
5 0.0864 1.217 2.4084 1.198
Propylene oxide
10 0.1768 1.2203 9.0397 1.111
20 0.4172 1.2164 17.425 1.114
40 0.9537 1.2097 34.255 1.118
60 1.2289 1.2522 367.06 0.9855