applicable period
type: ObjectProperty
domain includes: Claim
domain includes: material usage
range includes: Period
definition: The period over which the record applies.
term status: proposed

material usage
type: Class
definition: A record of a material a facility consumes and the period over which it does so. An identity-less value object.
object nature: value
term status: proposed

material consumed
type: ObjectProperty
domain includes: material usage
range includes: Material
definition: The material consumed.
term status: proposed