3.2.3 explosion, n—chemical reaction of any chemical com-
pound (or mechanical mixture) that, when initiated, undergoes
a very rapid combustion or decomposition releasing large
volumes of highly heated gases that exert pressure on the
surrounding medium. DOD 4145.26 M
3.2.4 explosive, n—any chemical compound (or mechanical
mixture) that, when subjected to heat, impact, friction,
detonation, or other suitable initiation, undergoes a very rapid
chemical change with the evolution of large volumes of highly
heated gases that exert pressures in the surrounding medium.
DOD 4145.26 M
3.2.5 fragment, n—solid material propelled from an explo-
sion as a result of fragmentation.
3.2.5.1 primary fragment, n—fragment produced from the
explosive device itself.
3.2.5.2 secondary fragment, n—fragment produced from the
container or environment where the container is placed; a piece
of receptacle broken off as a result of the charge being
detonated inside of it.
3.2.6 fragmentation, n—breaking up of the confining mate-
rial of a chemical compound (or mechanical mixture) when an
explosion takes place. DOD 4145.26 M
3.2.7 overpressure, n—pressure, exceeding the ambient
pressure, manifested in the shock wave of an explosion.
DOD 4145.26 M
3.2.8 rigid plastic, n—for purposes of general classification,
a plastic that has a modulus of elasticity, either in flexure or in
tension, greater than 700 MPa (100 000 lbf ⁄in.
2
) at 23 °C
(73 °F) and 50 % relative humidity when tested in accordance
with Test Method D747, Test Methods D790, Test Method
D638, or Test Method D882.D883
3.2.9 silhouette, n—witness panel that is constructed in the
approximate shape of a human.
3.2.10 trash receptacle, n—public or commercial use refuse
bin that holds discarded items until collected.
3.2.10.1 Discussion—The capacity of a trash receptacle
specified according to this standard is typically less than 200 L
(50 gal).
3.2.11 trash receptacle lid, n—a removable or hinged cover
that fits over the open hollow of the receptacle.
3.2.11.1 Discussion—A lid component is normally fitted to
the configuration of the top opening of the trash receptacle and
is manufactured by means of a molding process using a rigid
plastic having a relatively low tensile or flexural modulus,
1000 MPa (150 000 lbf/in.
2
) maximum. The thickness of a
section (for example, top) of a typical lid generally does not
exceed 5 mm (
3
⁄
16
in.).
3.2.12 trash receptacle liner, n—a removable lining that is
provided within a trash receptacle to retain liquids and fluid-
like materials that seep from trash.
3.2.12.1 Discussion—This component is normally fitted to
the configuration of the interior of the trash receptacle and is
manufactured by means of a molding process using a rigid
plastic having a relatively low tensile or flexural modulus,
1000 MPa (150 000 lbf/in.
2
) maximum. The wall thickness of
a typical liner generally does not exceed 5 mm (
3
⁄
16
in.).
3.2.13 trash receptacle rubbish bag, n—a removable, re-
placeable container that is provided within a trash receptacle to
allow collected trash (that is, rubbish) to be removed from the
receptacle and moved to a disposal location.
3.2.13.1 Discussion—This bag is normally of a volume
capacity to fit the configuration of the interior of the trash
receptacle. It is manufactured from a plastic film generally
having a thickness of less than 0.16 mm (0.006 in.).
3.2.14 witness panel, n—flat, rectangular sheet-construction
mounted upright within the explosion test arena for purposes of
determining whether fragments are produced during the deto-
nation of the specimen.
3.3 Definitions of Terms Specific to This Standard:
3.3.1 blast resistance, n—for purposes of this standard
specification, the non-numerical attribute of a trash receptacle
that is established when the results of explosive testing of the
submitted specimens meet all performance requirements given
in this specification.
3.3.2 force protection, n—numerical level of blast resistance
of a trash receptacle expressed in the mass of trinitrotoluene
(TNT) explosive.
4. Ordering Information
4.1 Purchase orders for each trash receptacle specimen
meeting the requirements of this specification shall list the
model and desired force protection required in kilograms
(pounds) of TNT.
4.2 Purchase orders shall also list the physical trash content
size of the receptacle in liters (gallons) along with desired
finishes and other requirements associated with the physical
attributes of the trash receptacle.
5. Materials and Manufacture
5.1 The materials and method of manufacture shall be at the
discretion of the manufacturer sufficient to meet the perfor-
mance requirements of this specification.
6. Workmanship
6.1 The trash receptacles shall have no defects that will
adversely affect their service qualities.
7. Number of Tests and Retests
7.1 Test Specimens—Each explosive test shall be performed
on a new, undamaged trash receptacle.
7.2 Number of Test Specimens—The minimum number of
test specimens submitted for each force protection level test
shall be three. The manufacturer shall provide all three test
specimens at one time.
7.3 Retests—Only one retest is allowed per group of sub-
mitted test specimens.
7.3.1 If upon testing, one of the trash receptacle specimens
in the group submitted does not meet the requirements of this
specification, the manufacturer shall provide a new specimen
for retesting.
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