| 376 / | HD | INDUCED NUCLEAR REACTIONS: PROCESSES, SYSTEMS, AND ELEMENTS |
| 207 | DF | WITH CONTROL OF REACTOR (E.G., CONTROL OF COOLANT FLOW) {12} |
| 219 | DF | .~ By movement of control element or by release of neutron absorbing material {13} |
| 230 | DF | .~.~ Wherein driver or motivating is fluid {1} |
| 231 | | .~.~.~ Pneumatic |