1. (a) Each entrance that is used for personnel access to the high radiation area in a permanent radiographic installation shall be equipped with:

   1. (1) An entrance control of the type described in He‑P 4022.04(a)(1) that causes the radiation level upon entry into the area to be reduced; or

   2. (2) Conspicuous visible and audible warning signals to warn of the presence of radiation as follows:

      1. a. The visible signal must be actuated by radiation whenever the source is exposed or the machine is energized; and
      2. b. The audible signal must be actuated when an attempt is made to enter the installation while the source is exposed or the machine is energized.
2. (b) The alarm system described in He‑P 4034.13(a)(2) shall be tested for proper operation of both the visible and audible signals, with a radiation source, each day before the installation is used for radiographic operations.
3. (c) Entrance control devices that reduce the radiation level upon entry as designated in He‑P 4034.13(a)(1) shall be tested monthly.
4. (d) If an entrance control device or an alarm system is not operating properly, it shall be immediately labeled as defective and repaired within 7 calendar days.
5. (e) An installation with a defective entrance control device or alarm system may continue to be used for a 7-day period, provided the licensee or registrant implements the continuous surveillance requirements of He‑P 4034.22 and an alarming ratemeter is used.
6. (f) Test records for entrance controls and audible and visual alarms must be maintained in accordance with He-P 4034.31.

Source. #6942, eff 2-1-99; ss by #8800, INTERIM, eff 2-1-07, EXPIRED: 7-31-07 New. #8959, eff 8-7-07; ss by #10983, eff 11-24-15; amd by #12930, eff 11-26-19; ss by #14325, eff 7-19-25, EXPIRES: 7-19-35