Washington State University
SAFETY POLICIES AND PROCEDURES MANUAL

RADIATION SAFETY
9.43
Revised 3-02
Radiation Safety Office
335-8916

Sealed Source Leak Testing Program

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REQUIREMENT
Radiation Safety Office (RSO) personnel conduct tests for leakage on sealed radioactive sources prior to initial use and at six-month intervals. (WAC 246-221-080)
Applicability
RSO personnel test the following radioactive sources:
Exceptions
The following radioactive sources are excepted from leak tests:
Swipe Test
The swipe test for leakage is capable of detecting the presence of 0.005 microcuries (185 Bq) of removable contamination.
Record of Results
The Radiation Safety Office (RSO) maintains a record system of leak test results.
LEAKING SEALED SOURCES
Radiation Safety personnel immediately withdraw from use any leaking sealed sources.

The Radiation Safety Office files appropriate reports with the Radiation Control Section of the Washington State Department of Health.
LONG-TERM STORAGE
The Radiation Safety Office stores rarely-used sealed sources in long-term storage in the cave room of the Nuclear Radiation Center. RSO personnel wipe-survey this long-term storage area at least once during each six-month period.

RSO personnel conduct swipe tests on stored sources prior to release from the storage area.