Definitions - std301320000011

DOE-STD-3013-2000

5.2

Definitions

Design Pressure

A characteristic of a sealed container which indicates its ability to

withstand internal pressurization. In the language of the ASME

Boiler and Pressure Vessel Code, it is the "Maximum Allowable

Working Pressure."

Fabricated Fuel

Nuclear reactor fuel elements (pins, plates, assemblies, etc.)

consisting of plutonium-bearing material completely contained

within a cladding (including end fittings), manufactured and

maintained with a very high quality and quality assurance.

Free Gas Volume

That portion of the sealed package that is available to the fill gas

and any gases generated during storage. See Appendix B for

further discussion.

Irradiated Fuel

Nuclear material, including Fabricated Fuel, that in its existing form,

has been subjected to irradiation in a nuclear reactor or accelerator

and that consequently delivers an external radiation dose requiring

special containment and handling.

Loss on Ignition

Mass loss measured after a weighed sample is heated in air to a

material temperature of 1000C for at least one hour, to measure

any weight change due to residual volatile species.

Material Temperature

The lowest temperature within a mass of heated material. In other

words, all of the material is at or above this temperature.

Oxide

Plutonium Oxide with accompanying non-plutonium constituents

that have been exposed to oxidizing conditions. Non-plutonium

constituents include other actinides, such as uranium and

americium, and compounds, such as magnesium oxide and sodium

chloride, derived from chemicals used in plutonium or fuel materials

processing.

Package

The assembled combination of containers required by this Standard

(an inner and an outer), together with the contained plutonium-

bearing materials and any additional interior convenience

containers into which they have been placed.