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Radiation Safety Ch. 5 Questions and Answers Graded A+
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Radiation Safety Ch. 5
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Radiation Safety Ch. 5Maximum exposure rate limits for source changers - answer2 millisieverts (200 millirem)
per hour at any exterior surface and 0.1 millisieverts (10 millirem) per hour at 1 meter
from any exterior surface.
The licensee may not use a source changer or a container to store radioactive material
unless - answer The source changer or container has securely attached to it a durable,
legible, and clearly visible label.
The licensee may not transport licensed material unless - answer The material is
packaged and the package is labeled, marked, and accompanied by appropriate
shipping papers.
Storage or use location is permanent if radioactive material is stored at location for more
than 90 days and any one of following applies - answer1. Telephone service is est. by
licensee.
2. Industrial radiographic services are advertised for or from location.
3. Industrial radiographic operations are conducted at other sites due to arrangements
made from location.
Licensee or registrant shall maintain sufficient calibrated and operated survey
instruments, where? - answer At each location where radioactive material is present to
make physical radiation surveys.
Survey meters should be able to read ... - answer0.02 millisieverts (2 millirems)per hour
through 0.01 sievert (1 rem per hour
Each radiation survey instrument shall be calibrated... - answer1. At energies
appropriate for use at least every 6 months.
2. such that accuracy within +-20% can be demonstrated.
3. at two points located approx. 1/3 and 2/3 of full-scale on each scale for linear scale
instruments. 2 points of at least one decade for logarithmic scale, and 3 points b/t 2 and
1000 M/R per hour for digital instruments.
Records of calibration for survey meters should be kept for... - answer At least 3 years.
Radiation survey instruments should be checked with a radiation source, when? -
answer At beginning of each day of use and, at the beginning of every shift to ensure it
is working.
If equipment problems are found, the equipment must be.. - answer Removed from
service until repaired.
, Each sealed source shall be tested for leakage at intervals not to exceed... - answer6
months
The leak test shall be capable of detecting the presence of _________________ of
removable contamination on the sealed source. - answer0.005 microcurie (185 Bq)
Acceptable leak test method for sealed sources consists of: - answer Testing at the
nearest possible accessible point to the sealed source storage position, or other
appropriate measuring point.
If a sealed source is leaking then the licensee shall..... - answerImmediately withdraw
the equipment involved from use and shall cause it to be decontaminated and repaired.
S-tube configuration must be tested for depleted uranium (DU) at least.. - answerevery
12 months.
Each Licensee and registrant shall conduct a ___________________ to account for all
sealed sources and licensed or registered devices received or possessed under their
license. (incl, DU) - answer Quarterly physical inventory
In utilization logs records of each source or radiation should consist of... - answer1.
unique identification describing make, model, and serial # of each radiation machine.
2. Identity and signature of the radiographer whom source is assigned.
3. Locations and dates used, and date(s) each source of radiation is removed and
returned to storage.
Records of inspection should include: - answer date of inspection, name or inspector,
equipment involved, any problems found, any maintenance done.
Licensee shall provide a written report within 30 days if one of the following happen: -
answer1. Unintentional disconnection of source assembly from control cable.
2. Inability to retract and secure source assembly to fully shielded position
3. Failure if any component to properly perform intended function.
Licensee shall include the following in a report if overexposure or failure of safety
components happen: - answer1. Description of problem
2. cause of incident if known
3. Manufacturer and model # of equipment involved.
4. Place, time, and date
5. Actions taken to est. normal operations.
6. corrective actions taken or planned to prevent recurrence
7. Qualifications of personnel.
Each entrance that is used for personnel access to the high radiation area shall have
both... - answer Visible and audible warning signs to warn of the presence of radiation.
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