# 40 C.F.R. § 97.3 (2026): Measurements, abbreviations, and acronyms

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/CFR_T40_P97_S97_3

## Section

- **Citation:** 40 C.F.R. § 97.3 (2026)
- **Heading:** Measurements, abbreviations, and acronyms
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** August 14, 2026
- **Source:** Compiled text
- **Location:** Title 40 CFR: Protection of Environment / Chapter I / Part 97 / Subpart A / § 97.3: § 97.3   Measurements, abbreviations, and acronyms.

## Text

Measurements, abbreviations, and acronyms used in this part are defined as follows: Btu-British thermal unit. CO 2 -carbon dioxide. hr-hour. kW-kilowatt electrical. kWh-kilowatt hour. lb-pounds. mmBtu-million Btu. MWe-megawatt electrical. NO X -nitrogen oxides. O 2 -oxygen. ton-2000 pounds.

## Nearby sections

- [40 C.F.R. § 97.1 (2026) § 97.1   Purpose.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P97_S97_1.md)
- [40 C.F.R. § 97.2 (2026) § 97.2   Definitions.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P97_S97_2.md)
- [40 C.F.R. § 97.3 (2026) § 97.3   Measurements, abbreviations, and acronyms.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P97_S97_3.md)
- [40 C.F.R. § 97.4 (2026) § 97.4   Applicability.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P97_S97_4.md)
- [40 C.F.R. § 97.5 (2026) § 97.5   Retired unit exemption.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P97_S97_5.md)
- [40 C.F.R. § 97.6 (2026) § 97.6   Standard requirements.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P97_S97_6.md)
- [40 C.F.R. § 97.7 (2026) § 97.7   Computation of time.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P97_S97_7.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/CFR_T40_P97_S97_3. Check the current official text before relying on it. Not legal advice.