Special Provision B47 — 49 CFR 172.102 (B-Codes) – HazMat Tool

B47B-Codes

Excerpts from 49 CFR §172.102. Verify against the current official rule text before relying on them.

Provision text

Each tank may have a reclosing pressure relief device having a start-to-discharge pressure setting of 310 kPa (45 psig).

Materials referencing this code

UN 2031 - Nitric acid other than red fuming with not more than 20 percent nitric acid
UN 2031 - Nitric acid other than red fuming, with at least 65 percent, but not more than 70 percent nitric acid
UN 2031 - Nitric acid other than red fuming, with more than 20 percent and less than 65 percent nitric acid
UN 2031 - Nitric acid other than red fuming, with more than 70 percent nitric acid