Revised on
01/26/17 02:18pm
SafetyNet #
61

How to Maintain an Inventory for Radioactive Materials in Your Laboratory

Contact information

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 EH&S if you need assistance in implementing an inventory program for your laboratory or if you have any questions.

RADIOISOTOPE INVENTORY - Example

Radioisotope:3H

 

Lot Number: H650

Date Received: 1/15/06

 

µCi Received: 50

Vendor: GE Healthcare

 

Storage Site: Refrigerator - Room 111

Vial ID: 1

 

 

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

JC

15

Dry Waste 1/16/06 35

1/17/06

   

5

JC

       

1/18/06

   

5

JC

       

1/19/06

   

5

JC

15

Scint. Vials 1/19/06 20

1/26/06

   

10

JC

       

1/28/06

   

5

JC

15

Liquid 1/28/06 5

1/29/06

   

5

JC

5

Dry 1/29/06 0
                 

 

               
   

 

Empty vial disposed of in dry waste 4/19/11.

         
                 

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.