---
kind: "section"
citation: "40 C.F.R. § 61.31"
title: "40"
number: "61.31"
heading: "Definitions."
url: "https://uscodex.org/cfr/40/61.31"
---

# §61.31. Definitions.


Terms used in this subpart are defined in the act, in subpart A of this part, or in this section as follows:

- (a) Beryllium means the element beryllium. Where weights or concentrations are specified, such weights or concentrations apply to beryllium only, excluding the weight or concentration of any associated elements.
- (b) Extraction plant means a facility chemically processing beryllium ore to beryllium metal, alloy, or oxide, or performing any of the intermediate steps in these processes.
- (c) Beryllium ore means any naturally occurring material mined or gathered for its beryllium content.
- (d) Machine shop means a facility performing cutting, grinding, turning, honing, milling, deburring, lapping, electrochemical machining, etching, or other similar operations.
- (e) Ceramic plant means a manufacturing plant producing ceramic items.
- (f) Foundry means a facility engaged in the melting or casting of beryllium metal or alloy.
- (g) Beryllium-containing waste means material contaminated with beryllium and/or beryllium compounds used or generated during any process or operation performed by a source subject to this subpart.
- (h) Incinerator means any furnace used in the process of burning waste for the primary purpose of reducing the volume of the waste by removing combustible matter.
- (i) Propellant means a fuel and oxidizer physically or chemically combined which undergoes combustion to provide rocket propulsion.
- (j) Beryllium alloy means any metal to which beryllium has been added in order to increase its beryllium content and which contains more than 0.1 percent beryllium by weight.
- (k) Propellant plant means any facility engaged in the mixing, casting, or machining of propellant.

## Notes

### Authority

Authority: 42 U.S.C. 7401 et seq.

### Source

Source: 38 FR 8826, Apr. 6, 1973, unless otherwise noted.