- Initial Authorization of Radionuclide Laboratories
A completed A-4, Application for Radionuclide Laboratory Approval, form must be submitted to the RSO for each laboratory in which a PH will be using or storing unsealed forms of radioactive material. (This includes those labs which will be shared with another PH and counting rooms).
Upon receipt of the completed A-4 form, a member of the RSO may perform a site visit of the laboratory to verify that the information provided is accurate and to assure that the laboratory is properly equipped for the intended radionuclide use. Posting and labeling requirements may also be evaluated during the site visit.
When the previously mentioned items have been addressed, the PH will receive a memo indicating preliminary approval for that specific laboratory. Formal approval and authorization of radionuclide laboratories will take place at the next quarterly meeting of the RRSC. (The exception to the RRSC review may be the addition of "specific-use areas" in labs that have been previously approved.)
The PH will receive written notification that the RRSC approval has been granted through the issuance of a revised A-8,Radionuclide Use Permit, form. The PH should review the permit to verify its accuracy and assure that all "Conditions of Authorization" are followed.
a. Shared Laboratories
It is acceptable for an authorized radionuclide laboratory to appear on more than one permit (i.e., the lab may be utilized by more than one PH); however, each PH is responsible for surveying the lab. If desired, one PH may be designated to survey the lab, but each PH must retain a copy of the results in his/her Radionuclide Inventory and Survey Book. In addition, the survey must include all areas where radioactive material is used or stored.
b. Specific-Use Area(s)
A PH may designate a lab as a "specific-use area" on his/her permit. A specific-use area is a lab in which the PH will be using one piece of equipment (e.g., centrifuge, refrigerator, etc.) for radioactive material use or storage. The only exception to allow the use of more than one piece of equipment in a specific-use area is for counting equipment. In other words, a PH may define a lab as a specific-use area and use multiple pieces of counting equipment (e.g., LSC and gamma counter). With respect to specific-use areas, the PH is still required to survey the area in accordance with his/her permit; however, he/she is not responsible for other areas in the lab. If a PH wishes to use other areas in a specific-use area lab for radioactive material work or storage, he/she must submit a revised A-4 form prior to use.
- Modification of Radionuclide Laboratories
a. Major Modifications
The RSO must be notified before any major modifications (e.g., remodeling or renovation) are made to authorized radionuclide laboratories. Appropriate surveys must be performed by the RSO to assure that no significant contamination or radiation levels exist which might result in exposure to individuals performing the laboratory modification (e.g., Campus Facility Services personnel or outside contractors). Before radioactive material use is resumed in a modified radionuclide laboratory, an updated A-4, Application for Radionuclide Laboratory Approval, form must be completed and submitted to the RSO.
b. Minor Modifications
Minor modifications (e.g., relocation of a lab bench) or addition of new equipment (e.g., refrigerator) do not require the submission of an updated A-4 form; however, a new floor plan should be forwarded to the RSO.
- Close-Out Survey of Authorized Radionuclide Laboratories
Any authorized radionuclide laboratory which is no longer used for radionuclide work or storage must be decommissioned by the RSO. A Close-out survey should be requested by the PH through written memorandum to the RSO. Before this request is made, all unused radioactive material, radioactive waste, empty waste containers, etc., should be transferred to the RSO, another approved PH, or another approved laboratory. Following the request for a close-out survey, the RSO will perform a contamination (wipe) survey and direct radiation survey. Any required decontamination is the responsibility of the PH. When a laboratory has been shown to be free of contamination, the RSO will deface or remove all radiation signs and labels.
In the situation where a laboratory is used by more than one PH, a close-out survey is not necessary as long as one PH continues work in the laboratory; however, a written memorandum from the PH must be submitted stating the desire to remove the laboratory from his/her permit. Any authorized radionuclide laboratory which does not have a close-out survey is subject to all applicable radiation safety rules and regulations regardless of the presence or absence of radioactive material in that lab.