49 CFR § 229.103 - Safe working pressure; factor of safety.

---
identifier: "/us/cfr/t49/s229.103"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "49 CFR § 229.103 - Safe working pressure; factor of safety."
title_number: 49
title_name: "Transportation"
section_number: "229.103"
section_name: "Safe working pressure; factor of safety."
chapter_name: "FEDERAL RAILROAD ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
part_number: "229"
part_name: "RAILROAD LOCOMOTIVE SAFETY STANDARDS"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 20103, 20107, 20133, 20137-38, 20143, 20168, 20701-03, 21301-02, 21304; 28 U.S.C. 2461 note; and 49 CFR 1.89."
regulatory_source: "45 FR 21109, Mar. 31, 1980, unless otherwise noted."
cfr_part: "229"
---


# 229.103 Safe working pressure; factor of safety.

The safe working pressure for each steam generator shall be fixed by the chief mechanical officer of the carrier. The minimum factor of safety shall be four. The fixed safe working pressure shall be indicated on FRA Form F 6180-49A.