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1.3.8. Classification of sealed sources

For sealed sources, the IAEA [IAE 09a] recommends the classifications reported in Table 1.7.

Table 1.7. Examples of the use of the IAEA classification for disused sealed radioactive sources (source: [IAE 09a])

Type	Half-life	Activity	Volume	Examples
VSLW	<100 days	100 MBq	Small	⁹⁰Y, ¹⁹⁸Au (brachytherapy)
VSLW	<100 days	5 TBq	Small	¹⁹²Ir (brachytherapy)
LLW	<15 years	<10 MBq	Small	³H, ⁶⁰Co, ⁸⁵Kr
ILW	<15 years	<100 TBq	Small	⁶⁰Co (irradiators)
LLW	<30 years	<1 MBq	Small	¹³⁷Cs (brachytherapy)
ILW	<30 years	<1 PBq	Small	⁹⁰Sr (thickness gauges, thermoelectric generators), ¹³⁷Cs (irradiators)
ILW	>30 years	<40 MBq	Small but with a large number of sources	Pu, Am, Ra (static eliminators)
ILW	>30 years	<10 GBq	²²⁶Ra, ²⁴¹Am (gauges)