SafetyNet #61 - How to Maintain an Inventory for Radioactive Materials in Your Laboratory
Principal Investigators are charged with maintaining records of receipt, transfer, current inventory and disposal of all radioactive materials.
Maintaining an accurate inventory of your radioactive materials will help you:
- Plan your experiments.
- Estimate the residual activity in your radiological waste.
- Properly fill out your required quarterly inventories.
Steps to follow when receiving a radioactive shipment from the Office of Environmental Health and Safety are:
- Maintain the radioactive material inventory sheet in a notebook near the material storage location.
- Every time material is used, update the log sheet accounting for all radioactivity used or disposed. Each primary vial should have an assigned inventory log sheet. Decay corrections for short-lived radionuclides (less than 24 hours) should be performed.
- Quarterly inventory reports will be sent to radiation users electronically. Submit updated quarterly inventories on-line here.
Below is an example of a Radioisotope Inventory Sheet. Contact your EH&S Safety Advisor, EH&S at 752-1493 or ehsdesk@ucdavis.edu if you need assistance in implementing an inventory program for your laboratory or if you have any questions.
RADIOISOTOPE INVENTORY - Example
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Radioisotope:3H |
Lot Number: H650 |
|
|
Date Received: 1/15/06 |
µCi Received: 50 |
|
|
Vendor: GE Healthcare |
Storage Site: Refrigerator - Room 111 |
|
|
Vial ID: 1 |
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|
Date |
Total µCi Received |
Activity Used |
Activity (µCi) Disposed |
Disposal Method |
Date of Disposal |
Balance of µCi on Hand |
||
|---|---|---|---|---|---|---|---|---|
|
. |
. |
µl |
µCi |
User |
µCi |
. |
. |
. |
|
1/15/06 |
50 |
. |
. |
. |
. |
. |
. |
. |
|
1/16/06 |
. |
. |
15 |
BC |
15 |
Dry Waste | 1/16/06 | 35 |
|
1/17/06 |
. |
. |
5 |
BC |
. |
. |
. |
. |
|
1/18/06 |
. |
. |
5 |
BC |
. |
. |
. |
. |
|
1/19/06 |
. |
. |
5 |
BC |
15 |
Scint. Vials | 1/19/06 | 20 |
|
1/26/06 |
. |
. |
10 |
BC |
. |
. |
. |
. |
|
1/28/06 |
. |
. |
5 |
BC |
15 |
Liquid | 1/28/06 | 5 |
|
1/29/06 |
. |
. |
5 |
BC |
5 |
Dry | 1/29/06 | 0 |
|
. |
. |
. |
. |
. |
. |
. |
. |
. |
|
. |
. |
. |
. |
. |
. |
. |
. |
. |
|
. |
. |
|
Empty vial disposed of in dry waste 1/29/06. B.E. Carranza |
|||||
|
. |
. |
. |
. |
. |
. |
. |
. |
. |
NOTE: Each primary vial received should have an assigned inventory form.
A blank Radioactive Inventory sheet is available for download in MS Word 6.0 format.
Reviewed/Revised 8/2008
GW