30 CFR § 56.4103 - Fueling internal combustion engines.

---
identifier: "/us/cfr/t30/s56.4103"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "30 CFR § 56.4103 - Fueling internal combustion engines."
title_number: 30
title_name: "Mineral Resources"
section_number: "56.4103"
section_name: "Fueling internal combustion engines."
chapter_name: "MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR"
subchapter_number: "K"
subchapter_name: "METAL AND NONMETAL MINE SAFETY AND HEALTH"
part_number: "56"
part_name: "SAFETY AND HEALTH STANDARDS—SURFACE METAL AND NONMETAL MINES"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "30 U.S.C. 811."
regulatory_source: "50 FR 4054, Jan. 29, 1985, unless otherwise noted."
cfr_part: "56"
---


# 56.4103 Fueling internal combustion engines.

Internal combustion engines shall be switched off before refueling if the fuel tanks are integral parts of the equipment. This standard does not apply to diesel-powered equipment.