Cargo Change Procedure
           
 
 
 
 
 
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Cargo
 
 
 
 
 
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Butane
Butadiene
Butylene
C4-Raff
Ethene
Propane
Propene
P.O.
Promix
V.C.M.
C4-Crude
Cargo
O2<0.5%
O2<0.2%
O2<0.3%
O2<0.3%
O2<0.3%
O2<0.5%
O2<0.3%
O2<0.3%
O2<0.3%
O2<0,1%
O2<0.3%
 
 
 
 
 
Dewp<-50C
 
Dewp<-50C
 
 
 
 
Ammonia
 
 
 
 
 
 
 
not
 
 
 
 
2.4
1.2.3.
1.2.4.
1.2.4.
1.2.3.
2.4.
1.2.3.
permitted
1.2.3.
1.2.3.
1.2.3.
Butane
 
3.
4.
 
 
 
 
 
 
 
 
 
 
<5%
<5%
E.-T.
2.3.
S
2.3.
2.3.
E.T.
2.3.
E.T.
Butadiene
 
 
4.
4.
 
 
 
 
 
 
 
 
E.T.
 
<15%
<25%
2.3.
E.T.
2.3.
2.3.
2.3.
2.3.
E.T.
Butylene
 
3.
 
 
 
 
 
 
 
 
 
 
E.T.
<5%C4
 
E.T.
2.3.
E.T.
2.3.
2.3.
2.3.
2.3.
E.T.
C4-Raff.
 
3.
4.
 
 
 
 
 
 
 
 
 
E.T.
<5%C4
<75% C4
 
2.3.
E.T.
 
2.3.
2.3.
2.3.
E.T.
Ethene
S
3.
4.
S
 
S
3.
 
E.T.
3.
S
 
Heating
<5%C2
<5% C2
Heating
 
Heating
<3000 ppm
2.3.
Heating
<1000 ppm
Heating
Propane
 
3.
4.
 
3.
 
3.
 
 
3.
 
 
E.T.
<5%C3
<5% C3
E.T.
<1000 ppm
 
<5%C3
2.3.
E.T.
<1000 ppm
S
Propene
 
3.
4.
 
3.
 
 
 
 
3.
 
 
E.T.
<5%C3
<5% C3
E.T.
<1000 ppm
E.T.
 
2.3.
E.T.
<1000 ppm
S
P.O.
 
 
 
 
 
 
 
 
 
 
 
 
1.2.4.
1.2.3.
1.2.4.
1.2.4.
1.2.3.
1.2.4.
1.2.3.
 
1.2.3.
1.2.3.
1.2.3.
Promix
 
3.
4.
 
 
 
 
 
 
2.3.
 
 
E.T.
<5%
<5%
E.T.
2.3.
S
2.3.
2.3.
 
<1000 ppm
S
V.C.M.
 
 
 
 
 
 
 
 
 
 
 
 
2.4.
2.3.
2.4.
2.4.
2.3.
2.4.
2.3.
2.3.
2.3.
 
2.3.
Butane
 
3.
4.
 
 
 
 
 
 
 
 
Propane
S
<5% C3/C4
<5% 3/C4
E.T.
2.3.
E.T.
2.3.
2.3.
S
2.3.
 
C3/C4
 
3.
4.
 
 
 
 
 
 
 
 
Crude C4
E.T
<5% C3/C4
<5%C3/C4
E.T.
2.3.
S
2.3.
2.3.
2.3.
2.3.
 
 
                                                                                                1. Water wash
                                                                                                2. Visual inspection
                                                                                                3. Purge with Nitrogen only
                                                                                                4. Purge with Nitrogen or other inert gas
                                                                                                E.T.: Empty tank
                                                                                                                                S.: Standard requirements