New Hampshire Code of Administrative Rules
He - Department of Health and Human Services
Subtitle He-P - Former Division of Public Health Services
Chapter He-P 4000 - NEW HAMPSHIRE RULES FOR THE CONTROL OF RADIATION
Part He-P 4046 - USE OF RADIATION MACHINES: GENERAL REQUIREMENTS FOR ALL DIAGNOSTIC AND VETERINARY X-RAY SYSTEMS
Section He-P 4046.07 - Certified Diagnostic Systems Only

Universal Citation: NH Admin Rules He-P 4046.07

Current through Register No. 40, October 3, 2024

Diagnostic x-ray systems incorporating one or more certified component(s) shall be required to comply with the following:

(a) For beam limitation for stationary and mobile general purpose x-ray systems, the following shall be provided:

(1) A means of stepless adjustment of the size of the x-ray field;

(2) A minimum field size at an SID of 100 centimeters equal to or less than 5 centimeters by 5 centimeters;

(3) A light localizer, if used to define the x-ray field, shall provide an average illumination, based upon measurements made in the approximate center of each quadrant of the light field, of not less than 160 lux or 15 foot-candles at 100 centimeters or the maximum SID, whichever is less; and

(4) Radiation therapy simulation systems manufactured on and after May 27, 1980, are exempt from the requirement of He-P 4046.07(a) (3) ;

(b) For beam limitation on stationary general purpose x-ray systems equipped with positive beam limitation (PBL), the following requirements shall be met:

(1) The PBL system shall be capable of operation, at the discretion of the operator, such that the size of the field may be made smaller than the size of the image receptor through stepless adjustment of the field size;

(2) The minimum field size at an SID of 100 centimeters shall be equal to or less than 5 centimeters by 5 centimeters; and

(3) The PBL system shall function such that any change of image receptor size or SID shall cause the automatic return to PBL;

(c) Beam limitation for portable x-ray systems shall meet the beam limitation requirements of He-P 4046.07(a) or (b) as applicable;

(d) A tube stand or other mechanical support shall be used for portable x-ray systems, so that the x-ray tube housing assembly need not be hand-held during exposures; and

(e) Hand-held dental intraoral x-ray systems shall not be subject to the requirements of He-P 4046.07(d) .

#6827, eff 8-6-98; ss by #8692, INTERIM, eff 7-27-06, EXPIRES: 2-2-07; ss by #8808, eff 1-24-07

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