# 46 CFR § 143.220: Machinery space fire prevention

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-46-143.220

## Section

- **Citation:** 46 CFR § 143.220
- **Heading:** Machinery space fire prevention
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** September 22, 2026
- **Source:** Publisher's official text
- **Location:** Title 46—Shipping > CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY > SUBCHAPTER M—TOWING VESSELS > PART 143—MACHINERY AND ELECTRICAL SYSTEMS AND EQUIPMENT > Subpart B—Requirements for All Towing Vessels

## Text

(a) All seals and gaskets must be properly maintained to prevent leaks of flammable or combustible liquid, as those terms are defined in 46 CFR subpart 30.10, into the machinery space.
(b) Piping and machinery components that exceed 220 °C (428 °F), including fittings, flanges, valves, exhaust manifolds, and turbochargers, must be insulated. Measures must be in place to prevent flammable or combustible liquid piping leaks from coming into contact with these components.
(c) Flammable and combustible products must not be stored in machinery spaces, unless they are stored in a suitable container that meets the requirements of § 142.225 of this subchapter.

## Nearby sections

- [46 CFR § 143.100 § 143.100 Purpose.](https://www.frixlaw.com/law-library/statutes/ecfr-46-143.100.md)
- [46 CFR § 143.105 § 143.105 Applicability.](https://www.frixlaw.com/law-library/statutes/ecfr-46-143.105.md)
- [46 CFR § 143.115 § 143.115 Definitions.](https://www.frixlaw.com/law-library/statutes/ecfr-46-143.115.md)
- [46 CFR § 143.200 § 143.200 Applicability.](https://www.frixlaw.com/law-library/statutes/ecfr-46-143.200.md)
- [46 CFR § 143.205 § 143.205 General.](https://www.frixlaw.com/law-library/statutes/ecfr-46-143.205.md)
- [46 CFR § 143.210 § 143.210 Alternate design or operational considerations.](https://www.frixlaw.com/law-library/statutes/ecfr-46-143.210.md)
- [46 CFR § 143.215 § 143.215 Existing vessels built to class.](https://www.frixlaw.com/law-library/statutes/ecfr-46-143.215.md)
- [46 CFR § 143.220 § 143.220 Machinery space fire prevention.](https://www.frixlaw.com/law-library/statutes/ecfr-46-143.220.md)
- [46 CFR § 143.225 § 143.225 Control and monitoring requirements.](https://www.frixlaw.com/law-library/statutes/ecfr-46-143.225.md)
- [46 CFR § 143.230 § 143.230 Alarms and monitoring.](https://www.frixlaw.com/law-library/statutes/ecfr-46-143.230.md)
- [46 CFR § 143.235 § 143.235 General alarms.](https://www.frixlaw.com/law-library/statutes/ecfr-46-143.235.md)
- [46 CFR § 143.240 § 143.240 Communication requirements.](https://www.frixlaw.com/law-library/statutes/ecfr-46-143.240.md)
- [46 CFR § 143.245 § 143.245 Readiness and testing.](https://www.frixlaw.com/law-library/statutes/ecfr-46-143.245.md)
- [46 CFR § 143.250 § 143.250 System isolation and markings.](https://www.frixlaw.com/law-library/statutes/ecfr-46-143.250.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-46-143.220. Check the current official text before relying on it. Not legal advice.