Readiness To Proceed Memorandum (Declaration of Readiness to Operate). The formal

DOE-STD-3006-95

sustain nuclear chain reactions in a controlled manner, including critical and pulsed assemblies, and

research, test, and power reactors, is defined as a reactor. All assemblies designed to perform

subcritical experiments that could potentially reach criticality are also to be considered reactors.

Critical assemblies are special nuclear devices designed and used to sustain nuclear reactions.

Critical assemblies may be subject to frequent core and lattice configuration change and may be used

frequently as mockups of reactor configurations.

3.28 Readiness Assessment. A review that is conducted to determine a facility's readiness to

startup or restart when an Operational Readiness Review is not required or when contractor's

standard procedures for startup are not judged by contractor or DOE management to provide an

adequate verification of readiness.

3.29 Readiness To Proceed Memorandum (Declaration of Readiness to Operate). The formal

document submitted by the contractor which certifies the conclusion that the facility is prepared to

start or resume operations. The memorandum may include specific items requiring completion or

resolution prior to resumption of program work. The memorandum submittal is a prerequisite to

starting the DOE ORR. Upon completion of the DOE ORR and correction of identified deficiencies,

the memorandum is forwarded to the startup approval authority with recommendation that startup be

authorized.

3.30 Restart. The recommencement of program work. Restarts requiring an ORR can occur in

operating facilities if the process to be resumed meets the requirements for an Operational Readiness

Review. This can be true even if the same program work is on-going in some other portion of the

operating facility.

3.31 Review Approach. A description of what the technical experts (team members) will

examine and how the examination will be conducted to gather objective evidence that the criteria

have been met. The review approach consists of a sampling of documents, hardware, people, and

performance. These are alternatively termed Criteria and Review Approaches (CRAs) or Criteria

and Review Approach Documents (CRADs).