# -5 Tank head puncture resistance system.

- **operation:** document
- **citation:** 49 CFR 179.202-5
- **title:** -5 Tank head puncture resistance system.
- **source type:** regulation
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** current
- **official:** true
- **published on:** Not available
- **effective on:** 2026-08-18
- **summary:** The DOT-117 specification tank car must have a tank head puncture resistance system in conformance with § 179.16(c). The full height head shields must have a minimum thickness of 1/2 inch.

[80 FR 26749, May 8, 2015]
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/49-cfr-179-202-5.json
- **markdown:** https://regulus.evalyn.ai/document/49-cfr-179-202-5.md
- **app url:** https://regulus.evalyn.ai/document/49-cfr-179-202-5
- **source url:** https://www.ecfr.gov/on/2026-08-18/title-49/section-179.202-5
**body:**

The DOT-117 specification tank car must have a tank head puncture resistance system in conformance with § 179.16(c). The full height head shields must have a minimum thickness of 1/2 inch.

[80 FR 26749, May 8, 2015]
- **truncated:** false
- **body characters:** 216