Mitchell Container Services, Inc.

Intermediate Bulk Containers (IBCs), 55 Gallon Drums Steel and Plastic
Call us at 1-800-729-3786

Frequently Asked Questions
Stainless Steel IBC's
by Randy Speights

  1. Does D.O.T. Specification 57 Tank (IBC) have to be converted to U.N. Specification IBCs for hazardous product use?
  2. When should each portable tank used for the transportation of a hazardous material be successfully retested before further use?
  3. How do I know if my portable tank has a current test date?
  4. How can the test date be verified?
  5. What if the test date expires while the tank is filled with hazardous product and in warehouse storage?
  6. What is the tare weigh of a stainless steel IBC?
  7. What is the UN number?
  8. How high can you stack stainless steel IBC's?
  9. How many gallons per inch in 350 or 550 gallons?
  10. How tall are the 350 and 550 gallon IBCs?
  11. How many IBCs will fit on a trailer?

 


DOT 57 or UN Specification.
Does D.O.T. Specification 57 Tank (IBC) have to be converted to U.N. Specification IBCs for hazardous product use?

Answer: CFR 49, 173.32 (d) Use of Specification 52, 53, 56 and 57 portable tanks. Continued use of an existing portable tank constructed to DOT Specification 52 or 53 is authorized only for a tank constructed before June 1, 1972. Continued use of an existing portable tank constructed to DOT Specification 56 or 57 is authorized only for a tank constructed before October 1, 1996.

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Retest. When should each portable tank used for the transportation of a hazardous material be successfully retested before further use?

Answer: Specifications 52, 53, 56 and 57 portable tanks at least once every 2.5 years.
CFR 49, 173.32 (e)(1)(ii)


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Marking. How do I know if my portable tank has a current test date?

Answer: The date of the most recent periodic retest must be marked on the tank, on or near the metal certification plate.
CFR 49, 173.32 (e)(3)


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Records. How can the test date be verified?

Answer: The owner of the tank or his authorized agent must retain a written record indicating the date and results of all required tests and the name and address of the tester, until the next retest has been satisfactorily completed and recorded.
CFR 49 173.32 (e)(4)


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What if the test date expires while the tank is filled with hazardous product and in warehouse storage?

Answer: A portable tank for which the prescribed retest or reinspection under paragraph (c)(1) of this section has become due may not be filled and offered for transportation until retest or reinspection has been successfully completed. This paragraph does not apply to any tank filled prior to the test due date.
CFR 49 173.32 (e)(5)


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What is the tare weigh of a stainless steel IBC?

Answer: Each IBC is weighted by the manufacturer and stamped on the serial plate on the front of the IBC.


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What is the UN number?

Answer: The UN number is on the Inspection Plate. A full explanation of the Inspection plate is below. Custom Metal Craft certifies that their IBC's meet the construction, design, initial inspection and test requirements for the UN markings applied.

Inspection Plate (Sample)
350 GAL.550 GAL.Description
31A
Y
MM/YY
USA
CMI
5444
2722
MM/YY
MM/YY
304 S.S.
2.34
0
xxxxx
xxxxx
350
1325
6000
548
248
xxxxx
MM/YY
31A
Y
MM/YY
USA
CMI
5444
2722
MM/YY
MM/YY
304 S.S.
3.12
0
xxxxx
xxxxx
550
2082
6000
647
293
xxxxx
MM/YY
Code Number Designating Type of IBC
Packaging Group The IBC is Approved for (Group II & III)
Month/Year of Manufacture
Country Authorizing the Marking
Name of Manufacturer of Certification Agency
Maximum Stacking Loading in kg
Maximum Gross Weight in kg
Month & Year of Initial Leakproofness Test Date
Month & Year of initial Inspection Date
Material of Construction
N. THK. mm
MAX. FILL/DIS.PRES. kPa
MFG. Serial No.
Model No.
Capacity gallons
Capacity liters
MAX GROSS lb.
Tare Mass lb. (estimate)
Tare Mass kg (estimate)
Customer Serial No.
Date Retested

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How high can you stack stainless steel IBC's?

Answer: Do not exceed the maximum stacking loading listed on the serial plate located on the front upper part of the IBC.


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How many gallons per inch in 350 or 550 gallons?

Answer:

42" x 48" BASE
TOP 2 ½" TALL =
SLOPED BOTTOM 3" TALL =
1" OF BODY HEIGHT =
18.78 GALLONS
20.91 GALLONS
8.518 GALLONS


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How tall are the 350 and 550 gallon IBCs?

Answer:
350 gallon with a 42" x 48" Base is 47" High.
550 gallon with a 42" x 48" Base is 71" High.


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How many IBCs will fit on a trailer?

Answer:
350 gallon IBCs - 48 in a standard 48' trailer
350 gallon IBCs - 52 in a standard 53' trailer
550 gallon IBCs - 24 in a standard 48' trailer
550 gallon IBCs - 26 in a standard 53' trailer


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