The work involving radioactive materials at VCU covers a broad spectrum
of applications. Although it would be virtually impossible to devise a
single format for radioisotope record keeping that is right for every investigator,
the enclosed logbook index set for radioisotope records should facilitate
the record keeping requirements for most investigators. You are asked to
familiarize yourself with the system and then initiate its use in your
own radioisotope work. All records concerning receipt, use, monitoring,
transfer and disposal of radioactive materials must be kept for three (3)
years. After that time, the records may be discarded. Each
section of the logbook is explained below.
This section of the logbook should include copies of the responsible
investigator's authorizations to use radioactive materials, and amendments
to these authorizations.
is used to track radioactive material in the laboratory from receipt to
disposal and denotes the changing status of the material from stock to
active use to waste. Each container of radioactive material is assigned
a control number when it is received in Radiation Safety. A separate receipt/use/disposal
form should be used for each control number. Receipt information should
be entered at the top of the form. The use section on the left of the page
should be filled in each time the radioisotope with that particular control
number is used. When a radioisotope is assigned to in-laboratory waste,
record the amount in microcuries in the appropriate column of the "Waste
in Lab" section. When radioactive material is brought to Radiation Safety
for disposal, record the amount in the column titled "Waste Disposed to
Radiation Safety Section" and record the total microcuries left in the
lab. Transfer waste entries to the "Radioactive Waste Disposal" form that
is used when waste is brought to Radiation Safety for disposal.
Before bringing radioactive waste to Radiation Safety for disposal,
fill out a "Radioactive
Waste Disposal" form and keep a copy for your records. File your copy
in the "Waste Disposal" section in your log book.
Monitoring records consist of the actual numerical results of
swipe tests performed to detect removable radioactive contamination within
the lab. The test is performed by wiping a piece of parafilm, filter paper,
or a commercial swipe over a surface, and counting the sample in the appropriate
analyzer (liquid scintillation counter or a gamma well counter). A room
diagram is necessary to show swipe locations. The printout from the counter
should be placed in the "Monitoring" section of the log book. Count results
should be labeled to correspond with the room diagram locations. A blank
sample is required with each set of swipes as a background measurement.
Any sample above 200 cpm is considered contaminated. A contaminated area
should be cleaned, then re-swiped to ensure that removable radioactive
contamination is less than 200 cpm. Label re-swipe counting results and
also file these in the "Monitoring" section of the log book. University
regulations require swipe monitoring once each calendar week, or after
each use of radioactive materials if the use is at greater intervals than
weekly. Swipe monitoring records must include the date.
The Radiation Safety staff performs quarterly surveys of laboratories
using radioactive material. The inspection includes a review of radioisotope
records, waste disposal procedures, security, personnel monitoring requirements,
safety procedures, and an evaluation of contamination levels in the laboratory.
A "Quarterly Radioisotope Inventory" form is left during the survey. A
completed inventory form should be sent to the Radiation Safety Section
at Box 980112 within 10 days. Following the inspection, a survey report
is sent to the responsible investigator. The survey report and a copy of
the completed inventory form should be filed in the "Survey Report" section
in the log book.
Miscellaneous Radiation Safety Section Correspondence
Any memos or notices sent to or received from the Radiation Safety Section should be kept in this section.
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This page last updated 8/28/00.