Source Management and Security Flashcards
7 cards from real IRRSP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Source Management and Security flashcards as text
What is the half-life of Iridium-192 (Ir-192), the most commonly used industrial radiography isotope?
Answer: 73.83 days
Ir-192 has a half-life of approximately 73.83 days, requiring frequent source replacement but allowing relatively rapid decay for waste management purposes.
Which isotope used in industrial radiography has the longest half-life among those listed below?
Answer: Cobalt-60 (Co-60) — 5.27 years
Co-60 has a half-life of approximately 5.27 years, making it the longest-lived of the common industrial radiography isotopes and requiring less frequent source replacement.
What is the required method for disposing of a depleted or unwanted sealed source used in industrial radiography?
Answer: Transfer it to a licensed recipient, waste broker, or return it to the manufacturer
Sealed sources must be transferred to a licensed recipient such as a radioactive waste broker, distributor, or manufacturer for proper regulatory disposal.
What information must be recorded and reported to the NRC when a licensee transfers a sealed source to another party?
Answer: The source identity, estimated activity, transfer date, and recipient's license number
10 CFR 34.31 requires documentation of source transfers including the source identity, estimated activity, transfer date, and the recipient's NRC or Agreement State license number.
During a source change on an exposure device, what is the primary radiological concern for the radiographer performing the procedure?
Answer: Occupational dose exposure during the source exchange procedure
Source change procedures place the radiographer closer to an unshielded source than virtually any other task, making occupational dose management the primary radiological concern.
Under 10 CFR 37, what access control measure is required for locations where Category 1 or 2 quantities of radioactive material are stored?
Answer: Access must be limited to individuals with unescorted access authorization
10 CFR 37 requires that access to storage areas containing Category 1 or 2 radioactive materials be limited to individuals who have been granted unescorted access authorization.
What written plan is required under 10 CFR 37 for licensees possessing Category 1 or 2 quantities of radioactive material?
Answer: A physical protection plan addressing security measures and access control
10 CFR 37 requires licensees with Category 1 or 2 quantities of radioactive material to establish and maintain a written physical protection plan covering security measures, access control, and response to security events.