1B228 Category 1B

Hydrogen cryogenic distillation columns having all of the characteristics described in this ECCN (see List of Items Controlled).

Category 1: Special Materials and Related Equipment, Chemicals, “Microorganisms,” and “Toxins”

Reasons for control

• NP: Nuclear nonproliferation
• AT: Anti-terrorism

Country chart

List-based license exceptions

Items

1. Items: a. Designed to operate with internal temperatures of 35 K (−238 °C) or less;
2. b. Designed to operate at an internal pressure of 0.5 to 5 MPa (5 to 50 atmospheres);
3. c. Constructed of “fine-grain stainless steels” of the 300 series with low sulphur content or equivalent cryogenic and H2-compatible materials; and
4. d. With internal diameters of 30 cm or greater and “effective lengths” of 4 m or greater.

Related controls

(1) Equipment “specially designed” or prepared for the production of heavy water is subject to the export licensing authority of the Nuclear Regulatory Commission (see 10 CFR part 110). (2) See ECCNs 1E001 (“development” and “production”) and 1E201 (“use”) for technology for items controlled by this entry.

Source: eCFR, version 2026-08-01, retrieved 2026-08-20T04:04:59+00:00.