# 18 CFR § 1b.1: Definitions

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-18-1b.1

## Section

- **Citation:** 18 CFR § 1b.1
- **Heading:** Definitions
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** September 22, 2026
- **Source:** Publisher's official text
- **Location:** Title 18—Conservation of Power and Water Resources > CHAPTER I—FEDERAL ENERGY REGULATORY COMMISSION, DEPARTMENT OF ENERGY > SUBCHAPTER A—GENERAL RULES > PART 1b—RULES RELATING TO INVESTIGATIONS

## Text

For purposes of this part—
(a) Formal investigation means an investigation instituted by a Commission Order of Investigation.
(b) Preliminary Investigation means an inquiry conducted by the Commission or its staff, other than a formal investigation.
(c) Investigating officer means the individual(s) designated by the Commission in an Order of Investigation as Officer(s) of the Commission.
(d) Enforcement Hotline is a forum in which to address quickly and informally any matter within the Commission's jurisdiction concerning natural gas pipelines, oil pipelines, electric utilities and hydroelectric projects.
[43 FR 27174, June 23, 1978, as amended by Order 602, 64 FR 17097, Apr. 8, 1999]

## Nearby sections

- [18 CFR § 1b.1 § 1b.1 Definitions.](https://www.frixlaw.com/law-library/statutes/ecfr-18-1b.1.md)
- [18 CFR § 1b.2 § 1b.2 Scope.](https://www.frixlaw.com/law-library/statutes/ecfr-18-1b.2.md)
- [18 CFR § 1b.3 § 1b.3 Scope of investigations.](https://www.frixlaw.com/law-library/statutes/ecfr-18-1b.3.md)
- [18 CFR § 1b.4 § 1b.4 Types of investigations.](https://www.frixlaw.com/law-library/statutes/ecfr-18-1b.4.md)
- [18 CFR § 1b.5 § 1b.5 Formal investigations.](https://www.frixlaw.com/law-library/statutes/ecfr-18-1b.5.md)
- [18 CFR § 1b.6 § 1b.6 Preliminary investigations.](https://www.frixlaw.com/law-library/statutes/ecfr-18-1b.6.md)
- [18 CFR § 1b.7 § 1b.7 Procedure after investigation.](https://www.frixlaw.com/law-library/statutes/ecfr-18-1b.7.md)
- [18 CFR § 1b.8 § 1b.8 Requests for Commission investigations.](https://www.frixlaw.com/law-library/statutes/ecfr-18-1b.8.md)
- [18 CFR § 1b.9 § 1b.9 Confidentiality of investigations.](https://www.frixlaw.com/law-library/statutes/ecfr-18-1b.9.md)
- [18 CFR § 1b.10 § 1b.10 By whom conducted.](https://www.frixlaw.com/law-library/statutes/ecfr-18-1b.10.md)
- [18 CFR § 1b.11 § 1b.11 Limitation on participation.](https://www.frixlaw.com/law-library/statutes/ecfr-18-1b.11.md)
- [18 CFR § 1b.12 § 1b.12 Transcripts.](https://www.frixlaw.com/law-library/statutes/ecfr-18-1b.12.md)
- [18 CFR § 1b.13 § 1b.13 Powers of persons conducting formal investigations.](https://www.frixlaw.com/law-library/statutes/ecfr-18-1b.13.md)
- [18 CFR § 1b.14 § 1b.14 Subpoenas.](https://www.frixlaw.com/law-library/statutes/ecfr-18-1b.14.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-18-1b.1. Check the current official text before relying on it. Not legal advice.