Technical

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FIBA technical

Technical

FIBA’s reputation in the gas containment industry is built upon more than 50 years of innovation, engineering and leadership in technical standards. Our engineering is done with CAD Systems and state-of-the-art Finite Element Analysis (FEA). In order to best serve our customers we have provided some tables and conversion tools for your convenience.

Please click on any of the buttons below and the table will expand for your use.

(Type the unit amount in a chosen field and the value(s) will be automatically calculated)

Temperature Conversion:

Celsius Fahrenheit Kelvin

Pressure Conversion:

Bar KG/CM2 PSI KPa

Weight Conversion:

Tons Kilograms Pounds Metric Tons

Volume Conversion:

Liters US Gallons Cubic Feet Cubic Meters Cubic Inches

Length Conversion:

Inches Feet Millimeters Meters

The following is a list of conversion factors to calculate volume of specialty gases given a specific water volume.

Specialty Gas Payload Conversion
AMMONIA (NH3) 33.64 LBS./CU. FT. WATER (H2O)
BORON TRIFLUORIDE (BF3) 41.0 LBS./CU. FT. H2O
CARBON MONOXIDE (CO) 137.1 SCF/CU. FT. H2O
(9.81 LBS./CU. FT.
H2O)
ETHANE (C2H6) 21.6 LBS./CU. FT. H2O
ETHYLENE (C2H4) DOT VESSEL-
WATER VOLUME OF DOT VESSEL x 62.3 LBS./CF H2O =
LBS. OF H2O x .355 (%H2O BY WEIGHT) =
LBS. OF ETHYLENE
(x 13.8 SCF/LB. = SCF OF ETHYLENE)
(NOTE: A different calculation is used for ASME vessels. Call FIBA for assistance.)
FLUORINE/NITROGEN (F2N2) 11.15 LBS./CU. FT. H2O
HYDROGEN CHLORIDE (HCl) 40.5 LBS./CU. FT. H2O
LIQUEFIED NATURAL GAS (LNG) 3.56 LBS./U.S. GALLON
(@ -259˚ F AND 14.7 PSIA)
NITROGEN TRIFLUORIDE (NF3) 28.82 LBS./CU.FT. H2O @ 1450 PSIG
(MAXIMUM PRESSURE OF 1,450 PSIG)
NITROUS OXIDE (N2O) 42.36 LBS./CU.FT. H2O
SILANE (SiH4) 20.12 LBS./CU. FT. H2O
SULFUR HEXAFLUORIDE (SF6) 74.76 LBS./CU. FT. H2O
TETRAFLUOROETHYLENE, INHIBITED (TFE) 7.02 LBS./CU. FT. H2O @ 500 PSIG
13.8 LBS./CU. FT. H2O @ 1,000 PSIG
VINYLIDENE FLUORIDE (VF2) 45.5 LBS./CU. FT. H2O
FLUOROCARBONS
R14-TETRAFLUOROMETHANE (CF4) 45.0 LBS./CU. FT. H2O
R22- CHLORODIFLUOROMETHANE (CHClF2) 62.3 LBS./CU. FT. H2O
R23- TRIFLUOROMETHANE (CHF3) 45.0 LBS./ CU. FT. H2O
R116- HEXAFLUOROETHANE (C2F6) 65.0 LBS./CU. FT. H2O
R142b-1-CHLORO-1,
1-DIFLUOROETHANE (CH3CClF2)
9.22 LBS./CU. FT.

The following is a list of average and/or nominal water volumes of various sizes of tubes (all volumes are in cu.ft.):

CONVENTIONAL (DOT 3A-2400)

Tube Specification Average Water Volume (cu. ft.)
9-5/8" OD x 12' L 5.0
9-5/8" OD x 20' 6-1/2"L 8.6
9-5/8" OD x 21'L 8.8
9-5/8" OD x 24'L 10.1
9-5/8" OD x 32'L 13.4

CONVENTIONAL (DOT 3AA-2400; CHROME-MOLY)

Tube Specification Average Water Volume (cu. ft.)
9-5/8" OD x 20' 6" L 9.0
9-5/8" OD x 21' 0" L 9.1

JUMBO/SUPERJUMBO (DOT 3T-2400)

Tube Specification Nominal Water Volume (cu. ft.)
22" OD x 18'6"L 41.5
22" OD x 34'4"L 79.8
22" OD x 36'0"L 83.8
22" OD x 37'6"L 87.4
22” OD x 40’0”L 93.5

JUMBO/SUPERJUMBO (DOT 3AAX-2400)

Tube Specification Nominal Water Volume (cu. ft.)
22" OD x 18'6"L 40.4
22" OD x 34'4"L 77.7
22" OD x 36'0"L 81.6
22" OD x 38'0"L 86.3
22” OD x 40’0”L 91.0

JUMBO/SUPERJUMBO (DOT 3T-2850)

Tube Specification Nominal Water Volume (cu. ft.)
22" OD x 18'6"L 40.8
22" OD x 34'4"L 78.4
22" OD x 36'0"L 82.6
22” OD x 37’6”L 86.0
22" OD x 38'0"L 87.1
22" OD x 40'0"L 91.9

Click the link below to open a usable Gas Table Lookup Sheet. The file is created in Microsoft Excel, and it will open Microsoft Excel automatically. A version of Microsoft Excel is needed to open and use the file.