### Question
What is the definition of major critical component?


### Answer
The definition of **major critical component** is as follows in *42 U.S.C. § 2153a*:

> any component part or group of component parts which the President determines to be essential to the operation of a complete uranium enrichment, nuclear fuel reprocessing, or heavy water production facility

#### Citation:
  - *42 U.S.C. § 2153a*
  - Heading: **CHAPTER 23-DEVELOPMENT AND CONTROL OF ATOMIC ENERGY > Division A-Atomic Energy > SUBCHAPTER X-INTERNATIONAL ACTIVITIES**

