(a) General. The tear test must be conducted for the qualification of all of Flexible Bulk Containers design types.
(b) Special preparation for the tear test. Flexible Bulk Container design types must be filled its maximum permissible gross mass, the load being evenly distributed.
(c) Test method. (1) A Flexible Bulk Container design type must be placed on the ground and a 300 mm (11.9 in) cut shall be made. This 300 mm (11.9 in) cut must:
(1) A Flexible Bulk Container design type must be placed on the ground and a 300 mm (11.9 in) cut shall be made. This 300 mm (11.9 in) cut must:
(i) Completely penetrate all layers of the Flexible Bulk Container on a wall with a wide face.
(ii) Be made at a 45 angle to the principal axis of the Flexible Bulk Container, halfway between the bottom surface and the top level of the contents.
(2) The Flexible Bulk Container after being cut according to the provisions of Sec. 178.1070(c)(1), must be subjected to a uniformly distributed superimposed load equivalent to twice the maximum gross mass of the package. This load must be applied for at least fifteen minutes. Flexible Bulk Containers that are designed to be lifted from the top or the side must, after removal of the superimposed load, be lifted clear of the floor and maintained in that position for a period of fifteen minutes.
(d) Criterion for passing the test. For all Flexible Bulk Container design types, the cut must not spread more than an additional 25% of its original length.
Sec. Appendix A to Part 178--Specifications for Steel
Table 1
[Open-hearth, basic oxygen, or electric steel of uniform quality. The following chemical composition limits are
based on ladle analysis:]----------------------------------------------------------------------------------------------------------------
Chemical composition, percent-ladle analysis
Designation --------------------------------------------------------------------------
Grade 1 \1\ Grade 2 \1 2\ Grade 3 \2 4 5\----------------------------------------------------------------------------------------------------------------Carbon............................... 0.10/0.20.............. 0.24 maximum........... 0.22 maximum.Manganese............................ 1.10/1.60.............. 0.50/1.00.............. 1.25 maximum.Phosphorus, maximum.................. 0.04................... 0.04................... 0.045.\6\Sulfur, maximum...................... 0.05................... 0.05................... 0.05.Silicon.............................. 0.15/0.30.............. 0.30 maximum........... .......................Copper, maximum...................... 0.40................... ....................... .......................Columbium............................ ....................... 0.01/0.04.............. .......................Heat treatment authorized............ (\3\).................. (\3\).................. (\3\).Maximum stress (p.s.i.).............. 35,000................. 35,000................. 35,000.----------------------------------------------------------------------------------------------------------------\1\ Addition of other elements to obtain alloying effect is not authorized.\2\ Ferritic grain size 6 or finer according to ASTM E 112-96 (IBR, see Sec. 171.7 of this subchapter).\3\ Any suitable heat treatment in excess of 1,100 F., except that liquid quenching is not permitted.\4\ Other alloying elements may be added and shall be reported.\5\ For compositions with a maximum carbon content of 0.15 percent of ladle analysis, the maximum limit for
manganese on ladle analysis may be 1.40 percent.\6\ Rephosphorized Grade 3 steels containing no more than 0.15 percent phosphorus are permitted if carbon
content does not exceed 0.15 percent and manganese does not exceed 1 percent.
Check Analysis Tolerances
[A heat of steel made under any of the above grades, the ladle analysis of which is slightly out of the
specified range is acceptable if the check analysis is within the following variations:]----------------------------------------------------------------------------------------------------------------
Tolerance (percent)
over the maximum limit
or under the minimum
limit
Element Limit or maximum specified (percent) ------------------------
Under Over
minimum maximum
limit limit----------------------------------------------------------------------------------------------------------------Carbon......................................... To 0.15 inclusive..................... 0.02 0.03
Over 0.15 to 0.40 inclusive........... 0.03 0.04Manganese...................................... To 0.60 inclusive..................... 0.03 0.03
Over 0.60 to 1.15 inclusive........... 0.04 0.04
Over 1.15 to 2.50 inclusive........... 0.05 0.05Phosphorus \7\................................. All ranges............................ ........... 0.01Sulfur......................................... All ranges............................ ........... 0.01Silicon........................................ To 0.30 inclusive..................... 0.02 0.03
Over 0.30 to 1.00 inclusive........... 0.05 0.05Copper......................................... To 1.00 inclusive..................... 0.03 0.03
Over 1.00 to 2.00 inclusive........... 0.05 0.05Nickel......................................... To 1.00 inclusive..................... 0.03 0.03
Over 1.00 to 2.00 inclusive........... 0.05 0.05Chromium....................................... To 0.90 inclusive..................... 0.03 0.03
Over 0.90 to 2.10 inclusive........... 0.05 0.05Molybdenum..................................... To 0.20 inclusive..................... 0.01 0.01
Over 0.20 to 0.40 inclusive........... 0.02 0.02Zirconium...................................... All ranges............................ 0.01 0.05Columbium...................................... To 0.04 inclusive..................... 0.005 0.01
Aluminum....................................... Over 0.10 to 0.20 inclusive........... 0.04 0.04
Over 0.20 to 0.30 inclusive........... 0.05 0.05----------------------------------------------------------------------------------------------------------------\7\ Rephosphorized steels not subject to check analysis for phosphorus. [Amdt. 178-3, 34 FR 12283, July 25, 1969; 34 FR 12593, Aug. 1, 1969, as amended by Amdt. 178-64, 45 FR 81573, Dec. 11, 1980; Amdt. 178-97, 55 FR 52728, Dec. 21, 1990; 68 FR 75758, Dec. 31, 2003]
Sec. Appendix B to Part 178--Alternative Leakproofness Test Methods
In addition to the method prescribed in Sec. 178.604 of this subchapter, the following leakproofness test methods are authorized:
(1) Helium test. The packaging must be filled with at least 1 L inert helium gas, air tight closed, and placed in a testing chamber. The testing chamber must be evacuated down to a pressure of 5 kPa which equals an over-pressure inside the packaging of 95 kPa. The air in the testing chamber must be analyzed for traces of helium gas by means of a mass spectrograph. The test must be conducted for a period of time sufficient to evacuate the chamber and to determine if there is leakage into or out of the packaging. If helium gas is detected, the leaking packaging must be automatically separated from non-leaking drums and the leaking area determined according to the method prescribed in Sec. 178.604(d) of this subchapter. A packaging passes the test if there is no leakage of helium.
(2) Pressure differential test. The packaging shall be restrained while either pressure or a vacuum is applied internally. The packaging must be pressurized to the pressure required by Sec. 178.604(e) of this subchapter for the appropriate packing group. The method of restraint must not affect the results of the test. The test must be conducted for a period of time sufficient to appropriately pressurize or evacuate the interior of the packaging and to determine if there is leakage into or out of the packaging. A packaging passes the pressure differential test if there is no change in measured internal pressure.
(3) Solution over seams. The packaging must be restrained while an internal air pressure is applied; the method of restraint may not affect the results of the test. The exterior surface of all seams and welds must be coated with a solution of soap suds or a water and oil mixture. The test must be conducted for a period of time sufficient to pressurize the interior of the packaging to the specified air pressure and to determine if there is leakage of air from the packaging. A packaging passes the test if there is no leakage of air from the packaging.
(4) Solution over partial seams test. For other than design qualification testing, the following test may be used for metal drums: The packaging must be restrained while an internal air pressure of 48 kPa (7.0 psig) is applied; the method of restraint may not affect the results of the test. The packaging must be coated with a soap solution over the entire side seam and a distance of not less than eight inches on each side of the side seam along the chime seam(s). The test must be conducted for a period of time sufficient to pressurize the interior of the packaging to the specified air pressure and to determine if there is leakage of air from the packaging. A packaging passes the test if there is no leakage of air from the packaging. Chime cuts must be made on the initial drum at the beginning of each production run and on the initial drum after any adjustment to the chime seamer. Chime cuts must be maintained on file in date order for not less than six months and be made available to a representative of the Department of Transportation on request. [Amdt. 178-97, 55 FR 52728, Dec. 21, 1990, as amended at 56 FR 66287, Dec. 20, 1991; 57 FR 45466, Oct. 1, 1992]
Sec. Appendix C to Part 178--Nominal and Minimum Thicknesses of Steel
Drums and Jerricans
For each listed packaging capacity, the following table compares the ISO 3574 (IBR, see Sec. 171.7 of this subchapter) nominal thickness with the corresponding ISO 3574 minimum thickness. ------------------------------------------------------------------------
ISO Corresponding
Maximum capacity (L) nominal ISO minimum
(mm) (mm)------------------------------------------------------------------------20........................................... 0.7 0.6330........................................... 0.8 0.73
40........................................... 0.8 0.7360........................................... 1.0 0.92120.......................................... 1.0 0.92220.......................................... 1.0 0.92450.......................................... 1.9 1.77------------------------------------------------------------------------ [Amdt. 178-106, 59 FR 67522, Dec. 29, 1994, as amended at 68 FR 75758, Dec. 31, 2003]
Sec. Appendix D to Part 178--Thermal Resistance Test
1. Scope. This test method evaluates the thermal resistance capabilities of a compressed oxygen generator and the outer packaging for a cylinder of compressed oxygen or other oxidizing gas and an oxygen generator. When exposed to a temperature of 205 C (400 F) for a period of not less than three hours, the outer surface of the cylinder may not exceed a temperature of 93 C (199 F) and the oxygen generator must not actuate.
2. Apparatus.
2.1 Test Oven. The oven must be large enough in size to fully house the test outer package without clearance problems. The test oven must be capable of maintaining a minimum steady state temperature of 205 C (400 F).
2.2 Thermocouples. At least three thermocouples must be used to monitor the temperature inside the oven and an additional three thermocouples must be used to monitor the temperature of the cylinder. The thermocouples must be \1/16\ inch, ceramic packed, metal sheathed, type K (Chromel-Alumel), grounded junction with a nominal 30 American wire gauge (AWG) size conductor. The thermocouples measuring the temperature inside the oven must be placed at varying heights to ensure even temperature and proper heat-soak conditions. For the thermocouples measuring the temperature of the cylinder: (1) Two of them must be placed on the outer cylinder side wall at approximately 2 inches (5 cm) from the top and bottom shoulders of the cylinder; and (2) one must be placed on the cylinder valve body near the pressure relief device. Alternatively, the thermocouples may be replaced with other devices such as a remote temperature sensor, metal fuse on the valve, or coated wax, provided the device is tested and the test report is retained for verification. Under this alternative, it is permissible to record the highest temperature to which the cylinder is subjected instead of temperature measurements in intervals of not more than five (5) minutes.
2.3 Instrumentation. A calibrated recording device or a computerized data acquisition system with an appropriate range should be provided to measure and record the outputs of the thermocouples.
3. Test Specimen.
3.1 Specimen Configuration. Each outer package material type and design must be tested, including any features such as handles, latches, fastening systems, etc., that may compromise the ability of the outer package to provide thermal protection.
3.2 Test Specimen Mounting. The tested outer package must be supported at the four corners using fire brick or other suitable means. The bottom surface of the outer package must be exposed to allow exposure to heat.
4. Preparation for Testing.
4.1 It is recommended that the cylinder be closed at ambient temperature and configured as when filled with a valve and pressure relief device. The oxygen generator must be filled with an oxidizing agent and may be tested with or without packaging.
4.2 Place the package or generator onto supporting bricks or a stand inside the test oven in such a manner to ensure even temperature flow.
5. Test Procedure.
5.1 Close oven door and check for proper reading on thermocouples.
5.2 Raise the temperature of the oven to a minimum temperature of 205 C [2 C (400 F [5 F). Maintain a minimum oven temperature of 205 C [2 C (400 F [5 F) for at least three hours. Exposure time begins when the oven steady state temperature reaches a minimum of 205 C [2 C (400 F [5 F).
5.3 At the conclusion of the three-hour period, the outer package may be removed from the oven and allowed to cool naturally.
6. Recordkeeping.
6.1 Record a complete description of the material being tested, including the manufacturer, size of cylinder, etc.
6.2 Record any observations regarding the behavior of the test specimen during exposure, such as smoke production, delamination, resin ignition, and time of occurrence of each event.
6.3 Record the temperature and time history of the cylinder temperature during the entire test for each thermocouple location. Temperature measurements must be recorded at intervals of not more than five (5) minutes. Record the maximum temperatures achieved at all three thermocouple locations and the corresponding time.
7. Requirements.
7.1 For a cylinder, the outer package must provide adequate protection such that the outer surface of the cylinder and valve does not exceed a temperature of 93 C (199 F) at any of the three points where the thermocouples are located.
7.2 For an oxygen generator, the generator must not actuate. [72 FR 4457, Jan. 31, 2008, as amended at 72 FR 55099, Sept. 28, 2007]
Sec. Appendix E to Part 178--Flame Penetration Resistance Test
(a) Criteria for Acceptance. (1) At least three specimens of the outer packaging materials must be tested;
(1) At least three specimens of the outer packaging materials must be tested;
(2) Each test must be conducted on a flat 16 inch x 24 inch test specimen mounted in the horizontal ceiling position of the test apparatus to represent the outer packaging design;
(3) Testing must be conducted on all design features (latches, seams, hinges, etc.) affecting the ability of the outer packaging to safely prevent the passage of fire in the horizontal ceiling position; and
(4) There must be no flame penetration of any specimen within 5 minutes after application of the flame source and the maximum allowable temperature at a point 4 inches above the test specimen, centered over the burner cone, must not exceed 205 C (400 F).
(b) Summary of Method. This method provides a laboratory test procedure for measuring the capability of cargo compartment lining materials to resist flame penetration with a 2 gallon per hour (GPH) 2 Grade kerosene or equivalent burner fire source. Ceiling and sidewall liner panels may be tested individually provided a baffle is used to simulate the missing panel. Any specimen that passes the test as a ceiling liner panel may be used as a sidewall liner panel.
(c) Test Specimens. (1) The specimen to be tested must measure 16 [\1/8\ inches (406 [3 mm) by 24 + \1/8\ inches (610 [3 mm).
(1) The specimen to be tested must measure 16 [\1/8\ inches (406 [3 mm) by 24 + \1/8\ inches (610 [3 mm).
(2) The specimens must be conditioned at 70 F. [5 F. (21 C. [2 C.) and 55% [5% humidity for at least 24 hours before testing.
(d) Test Apparatus. The arrangement of the test apparatus must include the components described in this section. Minor details of the apparatus may vary, depending on the model of the burner used.
(1) Specimen Mounting Stand. The mounting stand for the test specimens consists of steel angles.
(2) Test Burner. The burner to be used in tesing must--
(i) Be a modified gun type.
(ii) Use a suitable nozzle and maintain fuel pressure to yield a 2 GPH fuel flow. For example: An 80 degree nozzle nominally rated at 2.25 GPH and operated at 85 pounds per square inch (PSI) gauge to deliver 2.03 GPH.
(iii) Have a 12 inch (305 mm) burner extension installed at the end of the draft tube with an opening 6 inches (152 mm) high and 11 inches (280 mm) wide.
(iv) Have a burner fuel pressure regulator that is adjusted to deliver a nominal 2.0 GPH of 2 Grade kerosene or equivalent.
Burner models which have been used successfully in testing are the Lenox Model OB-32, Carlin Model 200 CRD and Park Model DPL.
(3) Calorimeter. (i) The calorimeter to be used in testing must be a total heat flux Foil Type Gardon Gage of an appropriate range (approximately 0 to 15.0 British thermal unit (BTU) per ft.\2\ sec., 0-17.0 watts/cm\2\). The calorimeter must be mounted in a 6 inch by 12 inch (152 by 305 mm) by \3/4\ inch (19 mm) thick insulating block which is attached to a steel angle bracket for placement in the test stand during burner calibration as shown in Figure 2 of this part of this appendix.
(i) The calorimeter to be used in testing must be a total heat flux Foil Type Gardon Gage of an appropriate range (approximately 0 to 15.0 British thermal unit (BTU) per ft.\2\ sec., 0-17.0 watts/cm\2\). The calorimeter must be mounted in a 6 inch by 12 inch (152 by 305 mm) by \3/4\ inch (19 mm) thick insulating block which is attached to a steel angle bracket for placement in the test stand during burner calibration as shown in Figure 2 of this part of this appendix.
(ii) The insulating block must be monitored for deterioration and the mounting shimmed as necessary to ensure that the calorimeter face is parallel to the exit plane of the test burner cone.
(4) Thermocouples. The seven thermocouples to be used for testing must be \1/16\ inch ceramic sheathed, type K, grounded thermocouples with a nominal 30 American wire gage (AWG) size conductor. The seven thermocouples must be attached to a steel angle bracket to form a thermocouple rake for placement in the test stand during burner calibration.
(5) Apparatus Arrangement. The test burner must be mounted on a suitable stand to position the exit of the burner cone a distance of 8 inches from the ceiling liner panel and 2 inches from the sidewall liner panel. The burner stand should have the capability of allowing the burner to be swung away from the test specimen during warm-up periods.
(6) Instrumentation. A recording potentiometer or other suitable instrument with an appropriate range must be used to measure and record the outputs of the calorimeter and the thermocouples.
(7) Timing Device. A stopwatch or other device must be used to measure the time of flame application and the time of flame penetration, if it occurs.
(e) Preparation of Apparatus. Before calibration, all equipment must be turned on and allowed to stabilize, and the burner fuel flow must be adjusted as specified in paragraph (d)(2).
(f) Calibration. To ensure the proper thermal output of the burner the following test must be made:
(1) Remove the burner extension from the end of the draft tube. Turn on the blower portion of the burner without turning the fuel or igniters on. Measure the air velocity using a hot wire anemometer in the center of the draft tube across the face of the opening. Adjust the damper such that the air velocity is in the range of 1550 to 1800 ft./min. If tabs are being used at the exit of the draft tube, they must be removed prior to this measurement. Reinstall the draft tube extension cone.
(2) Place the calorimeter on the test stand as shown in Figure 2 at a distance of 8 inches (203 mm) from the exit of the burner cone to simulate the position of the horizontal test specimen.
(3) Turn on the burner, allow it to run for 2 minutes for warm-up, and adjust the damper to produce a calorimeter reading of 8.0 [0.5 BTU per ft.\2\ sec. (9.1 [0.6 Watts/cm\2\).
(4) Replace the calorimeter with the thermocouple rake.
(5) Turn on the burner and ensure that each of the seven thermocouples reads 1700 F. [100 F. (927 C. [38 C.) to ensure steady state conditions have been achieved. If the temperature is out of this range, repeat steps 2 through 5 until proper readings are obtained.
(6) Turn off the burner and remove the thermocouple rake.
(7) Repeat (1) to ensure that the burner is in the correct range.
(g) Test Procedure. (1) Mount a thermocouple of the same type as that used for calibration at a distance of 4 inches (102 mm) above the horizontal (ceiling) test specimen. The thermocouple should be centered over the burner cone.
(1) Mount a thermocouple of the same type as that used for calibration at a distance of 4 inches (102 mm) above the horizontal (ceiling) test specimen. The thermocouple should be centered over the burner cone.
(2) Mount the test specimen on the test stand shown in Figure 1 in either the horizontal or vertical position. Mount the insulating material in the other position.
(3) Position the burner so that flames will not impinge on the specimen, turn the burner on, and allow it to run for 2 minutes. Rotate the burner to apply the flame to the specimen and simultaneously start the timing device.
(4) Expose the test specimen to the flame for 5 minutes and then turn off the burner. The test may be terminated earlier if flame penetration is observed.
(5) When testing ceiling liner panels, record the peak temperature measured 4 inches above the sample.
(6) Record the time at which flame penetration occurs if applicable.
(h) Test Report. The test report must include the following:
(1) A complete description of the materials tested including type, manufacturer, thickness, and other appropriate data.
(2) Observations of the behavior of the test specimens during flame exposure such as delamination, resin ignition, smoke, etc., including the time of such occurrence.
(3) The time at which flame penetration occurs, if applicable, for each of the three specimens tested. [GRAPHIC] [TIFF OMITTED] TR11MR13.013 [GRAPHIC] [TIFF OMITTED] TR11MR13.014 [72 FR 55099, Sept. 28, 2007, as amended at 78 FR 15328, Mar. 11, 2013]