BILINGUAL
HAZARDOUS MATERIALS
GENERAL AWARENESS
TRAINING
Volume VIII
BULK PACKAGING AND CARGO TANKS
PARTS 178 AND
180

ESPECIFICACIONES
DE TANQUES DE CARGA
The format for the material contained herein
was developed using Presentation
Task Force and Corel Draw,
WordPerfect, and Presentations.
The editors of this material and the Federal
Motor Carrier Safety Administration
make no representation as to the accuracy of
the Spanish translation contained
herein. The material contained in this presentation
is for general information and
training purposes only. To determine specific regulatory
requirements, consult
the most current copy of 49 Code of Federal
Regulations Parts 100-185.
Los redactores
de este material y la Administración Federal de Carreteras no
hacen ninguna
representación en cuanto a la exactitud de la traducción Española
que se contenga
aqui dentro. El material que está contenido en este folleto es
para propósitos
de capacitación solamente. Para requisitos específicos, favor de
leer 49 Código
de Reglamentos Federales Partes 100-185.
The requirements for design specifications
for cargo tanks is contained in 49
CFR Part 178. Section 178.320 contains general requirements
applicable
for all cargo tanks.
| 49 CFR Part 178 | |
|---|---|
|
178.320
|
General requirements applicable to all DOT specification cargo tank motor vehicles |
|
178.337
|
MC 331 cargo tank motor vehicles |
|
178.345
|
General design and construction requirements applicable to Specification DOT 406, DOT 407 & DOT 412. |
| 49 CFR Part 178 | |
|---|---|
|
178.346
|
Specification for DOT 406 cargo tank motor vehicle |
|
178.347
|
Specification for DOT 407 cargo tank motor vehicle |
|
178.348
|
Specification for DOT 412 cargo tank motor vehicle |
The design specifications for older cargo
tanks which are no longer
authorized for manufacture that are still authorized
for use may be found in
the
The requirements for testing and inspection
of cargo tanks is contained in
49 CFR '180.407. The
|
Test
or Inspection (Cargo tank specification, configuration and service)
|
Date First Test Req. | Interval period |
|---|---|---|
|
External Visual Inspection All cargo tanks designed to be loaded by vacuum with full opening rear heads |
09/01/1991 | 6 mos |
|
All
other cargo Tanks
|
09/01/1991 | 1 year |
Cargo Tank Testing Requirements
|
Test
or Inspection (Cargo tank specification, configuration and service)
|
Date First Test Req. | Interval period |
|---|---|---|
|
Internal Visual Inspection All insulated cargo tanks except MC 330, MC 331, MC 338 ... |
09/01/91
|
1
year
|
|
All
cargo tanks transporting lading corrosive to the tank ......
|
09/01/91
|
1
year
|
|
All
other cargo tanks except MC 338 .........
|
09/01/95
|
5
years
|
|
Lining Inspection All lined cargo tanks transporting lading corrosive to the tank ..... |
09/01/91
|
1
year
|
|
Test
or Inspection (Cargo tank specification, configuration and service)
|
Date First Test Req. | Interval period |
|---|---|---|
|
Leakage Test MC 330 and MC 331 cargo tanks in chlorine service ..... |
09/01/91
|
2
years
|
|
All
other cargo tanks except MC 338 .........
|
09/01/91
|
1
year
|
|
Pressure
Test All cargo tanks which are insulated with no manhole or insulated and lined except MC 338 |
09/01/91
|
1
year
|
Cargo Tank Testing Requirements
|
Test
or Inspection (Cargo tank specification, configuration and service)
|
Date First Test Req. | Interval period |
|---|---|---|
|
Pressure Test (cont) All cargo tanks designed to be loaded by vacuum with full opening heads..... |
09/01/92
|
2
years
|
|
MC
330 and MC 331 cargo tanks in chlorine service.........
|
09/01/92
|
2
years
|
|
All other cargo tanks |
09/01/95
|
5
years
|
Cargo Tank Testing Requirements
|
Test
or Inspection (Cargo tank specification, configuration and service)
|
Date First Test Req. | Interval period |
|---|---|---|
|
Thickness Test All unlined cargo tanks transporting material corrosive to the tank except MC 338..... |
09/01/92
|
2
years
|
These inspections must be performed by a
person who meets the
qualifications contained in 49 CFR '180.409 to perform the appropriate
test(s)
Each cargo tank that successfully completes
the required test and inspection
must be marked in accordance
with 49 CFR '180.415

|
Type
of Test or Inspection
|
Marking |
|---|---|
|
External Visual Inspection & Test |
V
|
|
External
Visual Inspection
|
I
|
|
Pressure Test |
P
|
|
Liniing
Inspection
|
L
|
|
Leakage
Test
|
K
|
|
Thickness
Test
|
T
|
MC-306/DOT-406
General requirements applicable to all DOT
specification cargo tanks are
contained in 49 CFR 178.320. General design and construction
requirements applicable to Dot 400 series tanks may be
found in 178.345.
The specifications for a DOT-406 cargo tank
may be found in 49 CFR
178.346
Usage:
Flammable Liquids w/low vapor pressure -Primarily
petroleum
products (e.g., Gasoline, diesel fuel)
Similar Tank Specifications:
MC-300, MC-301,
MC-302, MC-303, MC-305, NFPA 385, CSFMDA
Design Pressure:
3-5 PSI non- ASME (American Society of Mechanical
Engineers)
construction
Shell/head Materials:
** AL Aluminum (typical)
HSLA High Strength Low Alloy
MS Mild Steel
SS Stainless Steel
Venting System:
10 in. spring loaded set @ 5PSI w/ fusible
vents if necessary
MC-307/DOT-407

General requirements applicable to all DOT
specification cargo tanks are
contained in 49 CFR 178.320. General design and construction
requirements applicable to Dot 400 series tanks may be
found in 178.345.
The specifications for a DOT-407 cargo tank
may be found in 49 CFR
178.347.
Usage:
Flammable liquids w/moderate vapor pressure
poisonous liquids
Multiple hazard class liquid materials (e.g.,
flammable,
corrosive and poisonous).
Similar Tank Specification:
MC-304
Design Pressure:
25 PSI min. 35 PSI (typical)
ASME design above 50 PSI for MC-307 ASME
(American Society of
Mechanical Engineers) Code
stamped above 35 PSI for DOT-407
Shell/head Materials:
** SS Stainless Steel (typical)
AL Aluminum
May also be made from MS or HSLA
Venting System:
3 in. spring loaded set @ 130% of design
pressure
w/ 2 ea. 3 in. fusible vents (typical)
MC-312/DOT-412

General requirements applicable to all DOT
specification cargo tanks are
contained in 49 CFR 178.320. General design and construction
requirements applicable to Dot 400 series tanks may be
found in 178.345.
The specifications for a DOT-407 cargo tank
may be found in 49 CFR
178.348.
Usage:
Corrosive Liquids
Multiple hazard class liquid materials (e.g.,flammable, corrosive and
poisonous)
Similar Tank Specifications
MC-310, MC-311
Design Pressure
_3 PSI min.
(Minimum design pressure cannot not be less than the
pressure used for unloading 49 CFR ' 178.343-1(c) 35 PSI (typical)
ASME (American Society of Mechanical Engineers)
Code stamped
above 15 PSI
Shell/head Materials:
** MS Mild Steel (typical)
SS Stainless Steel
May also be made from AL and HSLA
Venting System:
13 in. spring
loaded set @ 130% of design pressure w/ rupture discs
@ 150% of design pressure
Often tanks have linings - rubber, teflon, glass, etc
MC-331

General requirements applicable to all DOT
specification cargo tanks are
contained in 49 CFR 178.320.The specifications for
a MC-331 cargo tank
may be found in 49 CFR 178.337.
Usage:
Gasses (Liquified
Petroleum Gas, Chlorine, Freon, Anhydrous
ammonia)
Similar Tank Specification:
MC-330, Non-specification tanks constructed
to ASME standards in
accordance with 49 CFR 173.315
Design Pressure:
100 PSI min.
500 PSI Max.
265 PSI (typical)
ASME Code stamped
Shell/head Materials:
** HSLA High Strength Low Alloy
SS Stainless Steel
MS Mild Steel
Venting System:
Spring loaded
MC-338

General requirements applicable to all DOT
specification cargo tanks are
contained in 49 CFR 178.320. The specifications for
a MC-338 cargo tank
may be found in 49 CFR 178.338.
Usage:
Cryogenic Liquids
Similar Tank Specifications:
Tanks constructed under a DOT exemption
Design Pressure:
25.3 PSIG min. 500 PSI max.
ASME construction
Shell/head Materials:
** HSLA High Strength Low Alloy
** SS Stainless Steel
MS Mild Steel
Shell/head Thickness:
varies HSLA (typical)
Venting System:
Spring loaded w/ rupture disc
Insulated or vacuum thermos bottle design
VACUUM TANKS

Usage:
Hazardous wastes
These tanks are being converted to MC-307/312
specifications on or after
Similar Tank Specifications:
MC-307/MC-312
Design Pressure:
25 PSI min.
internal 35 PSI (typical)
15 PSI external
ASME Code stamped
Shell/head Materials:
** MS Mild Steel (typical)
SS Stainless Steel
Shell/head Thickness:
.187 to .250 in. MS (typical)
Venting System:
13 in. spring
loaded w/ 3 in. rupture disc for corrosive service
A few of the tanks have linings - rubber,
teflon, etc.
IM-101/102 Portable Tanks

The specifications for a
IM 101 and IM 102 portable tanks may be found in
49 CFR 178.270.
Usage:
Essentially all types of liquids and designed
for intermodal
transportation
Similar Tank Specifications:
MC-307/312
Design Pressure:
IM-101 - 25.4 to 100
PSIG max.
(58 PSI)
IM-102 - 14.5 to 25.4
PSIG max.
ASME design not stamped
Shell/head Materials:
** SS Stainless Steel
** HSLA High Strength Low Alloy
Shell/head Thickness:
varies HSLA (typical)
Venting System:
Spring Loaded
Both insulated and non-insulated
BULK PACKAGING AND CARGO TANKS -15
DOT-51 and DOT-60 Portable Tanks

The specifications for a DOT 57 portable
tank may be found in 49 CFR
178.245. The specifications for a DOT 60
portable tank may be found in 49
CFR 178.255.
Usage:
Most types of liquids
Similar Tank Specifications:
None
Design Pressure:
DOT-56 - Not less than
100psig nor more than 500psig
DOT-60 - None
Shell/head Materials:
** SS Stainless
Steel
** HSLA High Strength Low Alloy
MS Mild steel
AL Aluminum
MG Magnesium Alloys
Shell/head Thickness:
varies