Table 2.10. Storage Recommendations for Plutonium Metal and Dioxide (adapted from Haschke and Martz, 1993)

DOE-STD-1128-98

Guide of Good Practices for Occupational Radiological Protection in Plutonium Facilities

Table 2.10. Storage Recommendations for Plutonium Metal and Dioxide (adapted from Haschke and

Martz, 1993)

Metal and oxide are both suitable storage forms for plutonium (100 years).

Organics (plastics, elastomers) must be excluded from the primary container for both forms.

Converting between metal and oxide is not recommended (negative impact of waste, cost,

environmental safety and health [ES&H] risk).

Both forms must be properly prepared and certified:

- Procedures for metal already exist (technology transfer needed).

- Procedures for oxide need development (stabilization, desorption, loss on ignition [LOI]).

Both forms must be in sealed primary containers for extended storage:

- Positive seals (e.g., welds and metal seals) are necessary.

- Seal certification or double sealing is necessary.

Requirements diverge for short-term/retrievable storage:

- Containers with metal gaskets are advantageous for metal storage.

- After stabilization, oxide is best stored in a container fitted with a rupture disk in series with a

vented stainless-steel frit container.

Surveillance of stored materials is required.

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