Cause and Effect Chart (2)

BP Berau Ltd. Tangguh LNG Project Operation Manual for Refrigerant storage and transfer

Doc. No. 074-IOM-PS-1201 KJP Doc. No. S-074-1283-001 Rev.6A

Acceptable operating condition of Ethane Refrigerant Storage Tank (074-TK-1001) based on ASME Section VIII Division 2, AM218.3 30 Design pressure 2 29kg/cm G

MDMT -45ºC

25

20

Normal operating point 2 (25.3kg/cm G, -31.7ºC

15

Allowable operating condition area (Below allowable operating curve)

Pressure (kg/cm2G)

Allowable operating curve Depressuring curve at non fire case

10

Minimum depressurizing temperature of -97°C

-104oC (Note1)

5

0 -120

_ _ _ __ RA| D __| N I ||___ 6 P-200

26-SE

-100

-80

-60 Temperature (degC)

-40

-20

0

Note1: Specified by ASME Section VIII Division 2, AM218.4