TITLE 10 - ENERGY

CHAPTER I - NUCLEAR REGULATORY COMMISSION

PART 35 - MEDICAL USE OF BYPRODUCT MATERIAL

subpart f - MANUAL BRACHYTHERAPY

35.433 - Decay of strontium - 90 sources for ophthalmic treatments.

  (a) Only an authorized medical physicist shall calculate the activity of each strontium-90 source that is used to determine the treatment times for ophthalmic treatments. The decay must be based on the activity determined under 35.432.

  (b) A licensee shall retain a record of the activity of each strontium-90 source in accordance with 35.2433.