# Security.

- **operation:** document
- **citation:** 49 CFR 176.162
- **title:** Security.
- **source type:** regulation
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** current
- **official:** true
- **published on:** Not available
- **effective on:** 2026-08-18
- **summary:** A responsible person must be present at all times when the hatches of spaces containing Class 1 (explosive) materials are open. No unauthorized person may be permitted to access spaces in which Class 1 (explosive) materials are stowed. Magazines must be secured against unauthorized entry when loadin
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/49-cfr-176-162.json
- **markdown:** https://regulus.evalyn.ai/document/49-cfr-176-162.md
- **app url:** https://regulus.evalyn.ai/document/49-cfr-176-162
- **source url:** https://www.ecfr.gov/on/2026-08-18/title-49/section-176.162
**body:**

A responsible person must be present at all times when the hatches of spaces containing Class 1 (explosive) materials are open. No unauthorized person may be permitted to access spaces in which Class 1 (explosive) materials are stowed. Magazines must be secured against unauthorized entry when loading has been completed, or when loading or unloading is stopped. Packages containing Class 1 (explosive) materials may not be opened on board ship.
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- **body characters:** 445