# 40 CFR § 139.12: Boilers

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-40-139.12

## Section

- **Citation:** 40 CFR § 139.12
- **Heading:** Boilers
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** September 22, 2026
- **Source:** Publisher's official text
- **Location:** Title 40—Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER D—WATER PROGRAMS > PART 139—DISCHARGES INCIDENTAL TO THE NORMAL OPERATION OF VESSELS > Subpart C—Standards for Specific Discharges Incidental to the Normal Operation of a Vessel

## Text

(a) The requirements in paragraphs (b) and (c) of this section apply to discharges resulting from boiler blowdown.
(b) The discharge from boiler blowdown must be minimized in port.
(c) Additional standards applicable to discharges from boilers when a vessel is operating in federally-protected waters are contained in § 139.40(d).

## Nearby sections

- [40 CFR § 139.1 § 139.1 Coverage.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.1.md)
- [40 CFR § 139.2 § 139.2 Definitions.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.2.md)
- [40 CFR § 139.3 § 139.3 Other Federal laws.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.3.md)
- [40 CFR § 139.4 § 139.4 General operation and maintenance.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.4.md)
- [40 CFR § 139.5 § 139.5 Biofouling management.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.5.md)
- [40 CFR § 139.6 § 139.6 Oil management.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.6.md)
- [40 CFR § 139.10 § 139.10 Ballast tanks.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.10.md)
- [40 CFR § 139.11 § 139.11 Bilges.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.11.md)
- [40 CFR § 139.12 § 139.12 Boilers.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.12.md)
- [40 CFR § 139.13 § 139.13 Cathodic protection.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.13.md)
- [40 CFR § 139.14 § 139.14 Chain lockers.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.14.md)
- [40 CFR § 139.15 § 139.15 Decks.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.15.md)
- [40 CFR § 139.16 § 139.16 Desalination and purification systems.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.16.md)
- [40 CFR § 139.17 § 139.17 Elevator pits.](https://www.frixlaw.com/law-library/statutes/ecfr-40-139.17.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-40-139.12. Check the current official text before relying on it. Not legal advice.