Explosive Stress - h3010v10199

DOE-HDBK-3010-94

5.0 Surface Contamination; Summary

E xp losive S tres s

There are no applicable data for the release of contaminant from combustible solids due to

the effects of shock or blast. The values assessed to be bounding are based on reasoned

judgment. The effect most closely resembling stresses in a given explosive-type accident

scenario is chosen. There is no need to assume cumulative releases for all effects cited.

Shock Effects. Materials can be fragmented by shock effects but much of the

material is extremely flexible and particles are unlikely to be dislodged from

porous and fibrous surfaces. This phenomena is considered bounded by the

values assessed for venting of pressurized gases over material discussed below.

Subsequent ignition and burning are likely to provide the most significant

overall release.

Blast Effects. This phenomena is bounded by the values assessed for venting

of pressurized gases over material discussed below. Again, subsequent

ignition and burning of the substrate material may provide the most significant

release.

Venting of Pressurized Gases Over Contaminated, Combustible Waste. Given

the flexible nature of this waste, which does not provide a rigid surface for

airflow to act upon, the ARF and RF of 1E-3 and 1.0 for shock flexing of

substrate material given in subsection 5.3.3.2.2 is considered to bound the

phenomena. This value is applicable only to the portion of waste surfaces that

are actually exposed.

Bounding

ARF 1E-3/RF 1.0

F ree-F all S p ill an d I mp action S tres s

There are no applicable data for free-fall spill of combustible solids. Release estimates based

on other phenomena are provided for packaged and unpackaged combustible solids.

For materials with high surface area to mass ratios, no significant suspension

is expected for freefall spill from typical working heights (~ 1 - 1.5 m).

For the situation where the combustible material is unpackaged/lightly

packaged (e.g., plastic wrapping only) and strongly impacts the floor or is

impacted by falling debris (shock-vibration induced by impact), the bounding

ARF and RF are based on reasoned judgment that suspension under these

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