N.Y. Comp. Codes R. & Regs. tit. 10, § 16.50
(b) Application for the registration of a radiation installation as described in subdivision (a) of this section shall be made by the operator thereof to the department on a written form and in a manner prescribed by the department. The times for making application shall be as follows:
(c) The department may withhold, suspend or revoke a certificate of registration if it finds that:
(e) The certificate of registration issued for a radiation installation to the operator thereof shall expire upon: