WAC 246-232-008   Exemption of certain timepieces, hands or dials.  A person is exempt from these regulations to the extent the person receives, possesses, uses, transfers, owns or acquires, and does not apply radioactive material to, or incorporate radioactive material into, the following timepieces or hands or dials containing the following specified quantities of radioactive material and the following specified levels of radiation*:

*Note:

Authority to transfer possession or control by the manufacturer, processor, or producer of any equipment, device, commodity, or other product containing source material or by-product material whose subsequent possession, use, transfer and disposal by all other persons who are exempted from regulatory requirements may be obtained only from the United States Nuclear Regulatory Commission, Washington, D.C. 20555.

     (1)(a) 925 megabecquerels (25 millicuries) or less of tritium per timepiece;

     (b) 185 megabecquerels (5 millicuries) or less of tritium per hand;

     (c) 555 megabecquerels (15 millicuries) or less of tritium per dial (bezels when used shall be considered as part of the dial);

     (d) 3.7 megabecquerels (100 microcuries) or less of promethium-147 per watch or 7.4 megabecquerels (200 microcuries) or less of promethium-147 per any other timepiece;

     (e) 740 kilobecquerels (20 microcuries) or less of promethium-147 per watch hand or 1.48 megabecquerels (40 microcuries) or less of promethium-147 per other timepiece hand;

     (f) 2.22 megabecquerels (60 microcuries) or less of promethium-147 per watch dial or 4.44 megabecquerels (120 microcuries) or less of promethium-147 per other timepiece dial (bezels when used shall be considered as part of the dial);

     (2) The levels of radiation from hands and dials containing promethium-147 will not exceed, when measured through 50 milligrams per square centimeter of absorber:

     (a) For wrist watches, 1 microgray (0.1 millirad) per hour at 10 centimeters from any surface;

     (b) For pocket watches, 1 microgray (0.1 millirad) per hour at 1 centimeter from any surface;

     (c) For any other timepiece, 2 micrograys (0.2 millirad) per hour at 10 centimeters from any surface.

     (3) 37 kilobecquerels (1 microcurie) of radium-226 per timepiece in timepieces manufactured prior to the effective date of these regulations.



[Statutory Authority: RCW 70.98.050 and 70.98.080. 09-06-003, § 246-232-008, filed 2/18/09, effective 3/21/09. Statutory Authority: RCW 70.98.050. 01-02-068, § 246-232-008, filed 12/29/00, effective 1/29/01.]