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Use when determining packing group requirements. Covers the criteria for each PG, the implications for packaging + quantity limits, and how PG affects roadside-stop scenarios.
默认使用会先检查来源的 Prompt；你也可以切换为直接命令，或下载本地副本。
决定是否安装前，请先阅读 SKILL.md，以及 SkillsMP 当前展示的配套文件。
用 Codex 或 Claude 帮你安装 复制这段 Prompt，粘贴到 Codex、Claude 或其他助手里，让它检查 Skill 页面并帮你完成安装。
直接命令不会经过审查 Prompt；运行前请先检查来源。
npx skills add https://github.com/x3allamerican/hazmat-skills --skill packing-groups-i-ii-iii命令会保持在同一行。复制前请横向滚动并检查完整内容。
想先保存到本地？可下载 SkillsMP 当前能够提供的文件。
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| name | packing-groups-i-ii-iii |
| description | Use when determining packing group requirements. Covers the criteria for each PG, the implications for packaging + quantity limits, and how PG affects roadside-stop scenarios. |
Packing Group (PG) reflects degree of danger. PG I = highest. PG III = lowest. Affects packaging strength, quantity limits, and labeling.
Most strict packaging. Lowest quantity limits per shipment. Examples: hydrazine, fuming nitric acid.
Strong packaging. Standard quantity limits. Most common PG (acetone, sulfuric acid, gasoline-type materials).
Less strict packaging. Higher quantity limits before bulk requirements kick in. Examples: kerosene, diesel fuel (when offered as hazmat).
Tied to physical properties: flash point (flammables), toxicity (Class 6.1), corrosivity. Specified in 49 CFR 173 for each class.
Inspector verifies PG → packaging code → labels match. PG II load in PG III packaging is a violation.
Applied in the X3 Compass Hazmat Center — the vertical add-on for hazmat-hauling motor carriers.