16 Del. Admin. Code § 4465-H-11.0

Current through Register Vol. 28, No. 7, January 1, 2025

Section 4465-H-11.0 - RGDs Used in Personnel Security Screening or Vehicle Screening for Public Protection

11.1 In addition to the General Requirements in Part H, Section 6.0, the following requirements in this section apply. A person requesting Agency approval for a RGD to be used in Personnel Security Screening or Vehicle Screening with intended exposure of human occupants to the primary beam for public protection shall submit in writing the following information to the Agency for evaluation and approval, and show how the dose limits noted below will be met.

11.2 Efficacy Evaluation. An evaluation of all known alternate methods that could achieve the goals of the security screening program, and why these methods will not be used in preference to the proposed approach utilizing ionizing radiation.

11.3 Equipment Evaluation. RGDs used for non-healing arts personnel security screening of humans shall be evaluated annually by a qualified expert for optimization of image quality and radiation dose.

11.4 Dose Limits for General-Use Systems. For general-use screening systems, where system is used without regard to the number of individuals scanned or number of scans per individual in a year, an effective dose for a single complete screening shall be limited to 0.25 uSv (25 urem).

11.5 Dose Limits for Limited-Use Systems. For limited-use screening systems, where equipment is capable of operation greater than 0.25 microsieverts (uSv), or 25 microRem (uRem) per screening, and is used with discretion, the effective dose per screening shall be less than or equal to 0.01 millisieverts (mSv), or 1 milliRem (mRem).

11.6 Dose Limits for Repeat Security Screenings. Individuals subject to repeat security screening at a single venue shall not receive an effective dose greater than 0.25 millisieverts (mSv), or 25 milliRem (mRem) in any one year at the registrant or licensee's facility.

11.7 Vehicle Limitations.

11.7.1 When the procedures for operation of a mobile or fixed RGD used for security screening of vehicles includes knowingly exposing human occupants to the primary beam when screening vehicles, structures or containers, the system shall be subject to the same exemption requirements as general-use or limited-use systems as provided in Part H, subsections 12.1 through 12.1.4.

11.7.2 If the requirements in Part H, subsection 11.0 through Part H, subsection 11.7 cannot be met if vehicle occupants are knowingly exposed to the primary beam of a security screening system, then there shall be means to assure the occupied portion of the vehicle is outside of the scan area while the primary beam is emitted or procedures shall be established and implemented to assure that no occupants are present in the vehicle during screening.

11.7.3 The effective dose to an individual for a single inadvertent exposure to the primary beam shall not exceed 5 millisieverts (mSv), or 500 milliRem (mRem) and should not exceed 1 millisieverts (mSv), or 100 milliRem (mRem). The reliability of the procedure used to assure that there are no occupants of a vehicle to be scanned shall be commensurate with the potential severity of an inadvertent exposure. If the 5 millisieverts (mSv), or 500 milliRem (mRem) limit cannot be assured, a pre-screening with a mode or system which can meet the limits in Part H, subsection 11.4 through Part H, subsection 11.6 shall be used to verify there are no occupants in the vehicle being examined.

16 Del. Admin. Code § 4465-H-11.0

22 DE Reg. 401( 11/1/2018) (Final)