# Flexibility.

- **operation:** document
- **citation:** 49 CFR 192.159
- **title:** Flexibility.
- **source type:** regulation
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** current
- **official:** true
- **published on:** Not available
- **effective on:** 2026-08-18
- **summary:** Each pipeline must be designed with enough flexibility to prevent thermal expansion or contraction from causing excessive stresses in the pipe or components, excessive bending or unusual loads at joints, or undesirable forces or moments at points of connection to equipment, or at anchorage or guide 
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/49-cfr-192-159.json
- **markdown:** https://regulus.evalyn.ai/document/49-cfr-192-159.md
- **app url:** https://regulus.evalyn.ai/document/49-cfr-192-159
- **source url:** https://www.ecfr.gov/on/2026-08-18/title-49/section-192.159
**body:**

Each pipeline must be designed with enough flexibility to prevent thermal expansion or contraction from causing excessive stresses in the pipe or components, excessive bending or unusual loads at joints, or undesirable forces or moments at points of connection to equipment, or at anchorage or guide points.
- **truncated:** false
- **body characters:** 307