NUCLEAR ENERGY

Nuclear Programs

INL’s 52 Reactors

Continued on back

I

NL designed and constructed 52 reactors since

its establishment in 1949 as

the National Reactor Testing

Station. For many years it was

the site of the largest concentration of nuclear reactors in

the world. After the first

reactor at the National Reactor

Testing Station (Experimental

Breeder Reactor-I) went

critical in 1951, scientists built

and operated dozens more

reactors in the next five

decades. The alphabetical

listing of the Idaho reactors

below is from “Proving the

Principle, A History of the

Idaho National Laboratory

1949-1999.”

Nuclear Heritage

1. Advanced Reactivity

Measurement Facility No.

1. (10/60-1974)

2. Advanced Reactivity

Measurement Facility No.

2 (12/62-1968)

3. Advanced Test Reactor (7/

67-present)

4. Advanced Test Reactor

Critical Facility

(5/64-present)

5. Argonne Fast Source

Reactor

(10/59-late 1970s)

6. Boiling Water Reactor

Experiment No. 1

(1953-7/54)

7. Boiling Water Reactor

Experiment No. 2

(10/54-3/55)

8. Boiling Water Reactor

Experiment No. 3

(6/55-1956)

9. Boiling Water Reactor

Experiment No. 4

(12/56-6/58)

10. Boiling Water Reactor

Experiment No. 5

(2/62-9/64)

11. Cavity Reactor Critical

Experiment

(5/67-early 1970s)

12. Coupled Fast Reactivity

Measurement Facility

(1968-1991)

13. Critical Experiment Tank

(1958-1962)

14. Engineering Test Reactor

(9/57-12/81)

Advanced Test Reactor (No. 3)

is used to study the effects of

radiation on materials and also

produces rare and valuable

medical and industrial isotopes.

It is the largest test reactor in

the world,

PN67-5184
NUCLEAR ENERGY

Continued from front

05-GA50463-02

Sponsored by the

U.S. Department of Energy

Teri Ehresman

P.O. Box 1625

Idaho Falls, ID 83415-3860

Phone – (208) 526-7785

Fax – (208) 526-2930

Teri.Ehresman@inl.gov

Contact

15. Engineering Test Reactor

Critical Facility

(5/57-1982)

16. Experimental Beryllium

Oxide Reactor (never

operated)

17. Experimental Breeder

Reactor No. 1

(8/51-12/63)

18. Experimental Breeder

Reactor No. 2 (9/61-9/94)

19. Experimental Organic

Cooled Reactor (never

operated)

20. Fast Spectrum Refractory

Metals Reactor

(3/62-1968)

21. Gas Cooled Reactor

Experiment (2/60-4/61)

22. Heat Transfer Experiment

No. 1

(11/55-1956)

23. Heat Transfer Experiment

No. 2 (7/57-3/61)

24. Heat Transfer Experiment

No. 3 (1958-12/60)

25. High Temperature Marine

Propulsion Reactor (1952-

1964)

26. Hot Critical Experiment

(1958-3/61)

27. Large Ship Reactor A

(10/58-1/94)

28. Large Ship Reactor B

(7/59-1987)

29. Loss of Fluid Test Reactor

(1973-7/85)

30. Materials Testing Reactor

(3/52-4/70)

31. Mobile Low-Power

Reactor No. 1

(3/61-5/64)

32. Natural Circulation

Reactor (9/65-5/95)

33. Neutron Radiography

Facility (continuing)

34. Nuclear Effects Reactor

(8/68-6/70)

35. Organic Moderated

Reactor Experiment

(9/57-4/63)

36. Power Burst Facility

(9/72-1985)

37. Reactivity Measurement

Facility (2/54-4/62)

38. Shield Test Pool Facility

(early 1960s)

39. Special Power Excursion

Reactor Test No. I

(6/55-1964)

40. Special Power Excursion

Reactor Test No. II

(3/60-10/64)

41. Special Power Excursion

Reactor Test No. III

(12/58-6/68)

42. Special Power Excursion

Reactor Test No. IV

(7/62-8/70)

43. Spherical Cavity Reactor

Critical Experiment

(11/72-1973)

44. Stationary Low-Power

Reactor (8/58-1/61)

45. Submarine Thermal

Reactor (3/53-10/89)

46. Systems for Nuclear

Auxiliary Power (SNAP)

10A Transient No. 1 (early

1960s)

47. Systems for Nuclear

Auxiliary Power (SNAP)

10A Transient No. 3 (4/64-

4/64)

48. Systems for Nuclear

Auxiliary Power (SNAP)

10A Transient No. 2

(1965-1/66)

49. Thermal Reactor Idaho

Test Station (last operated

in 1964)

50. Transient Reactor Test

Facility (2/59-4/94)

51. Zero Power Physics

Reactor (4/64-4/92)

52. Zero Power Reactor

No. 3 (10/55-11/70)

Materials Testing Reactor (No.

30) was the second reactor built

at the National Reactor Testing

Station, now the INL. It was used

to test the performance of

materials in intense radiation

environments.

Submarine Thermal Reactor (No.

45) was the prototype power

plant for the nation’s first nuclear

submarine, the USS Nautilus.

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