SECTION 252:410-13-3. Area requirements

(a)   Radiation levels. The local components of an analytical x-ray system shall be located and arranged and include sufficient shielding or access control so that no radiation levels exist in any area surrounding the local components which could result in a dose to an individual present there in excess of the dose limits in Subchapter 20. Dose limits shall be met at any specified tube rating.

(b)   Surveys.

(1)   Frequency. Unless exempted or alternative compliance measures are approved by DEQ, a permittee must demonstrate compliance with dose limits by conducting surveys of all x-ray systems according to Subchapter 20. Surveys must be conducted:

(A)   when the x-ray system is installed;

(B)   at least once every 12 months after installation;

(C)   following any change in the initial arrangement, number or type of local components in the system;

(D)   following any maintenance requiring the disassembly or removal of a local component in the system;

(E)   during the performance of maintenance or alignment procedures if the procedures require the presence of a primary x-ray beam;

(F)   any time observation of the local components in the system reveals an abnormal condition; and

(G)   whenever personnel monitoring devices show a significant increase over the previous monitoring period.

(2)   Records. In addition to the record requirements of 252:410-20-2, records of surveys of x-ray systems should include the manufacturer model and serial number of the radiation machine being surveyed and the kV and mA settings used during the survey.

(c)   Posting. Each area or room containing an x-ray system shall be posted with a sign or signs bearing the radiation symbol and the words "CAUTION - X-RAY EQUIPMENT" or words having similar intent.

(d)   Calibration requirements. Survey instruments shall be calibrated in accordance with 252:410-20-2(b).

[Source: Added at 17 Ok Reg 1136, eff 6-1-00]