Sunday, 1 November 2026
Standing Office 81 (SOVNPA 81) emblem Viet Nam NVietnam National Presiding Agency
on Countering the Proliferation of Weapons of Mass Destruction
Standing Office 81

6.2.Blowers and compressors

List
NSG – Trigger List (Part 1) – INFCIRC/254/Rev.15/Part 1 (21 April 2026)
Single stage, low head (i.e., 0.2 MPa) centrifugal blowers or compressors for hydrogensulphide gas circulation (i.e., gas containing more than 70% by weight hydrogen sulphide, H₂S) especially designed or prepared for heavy water production utilising the water-hydrogen sulphide exchange process. These blowers or compressors have a throughput capacity greater than or equal to 5 m³/s while operating at pressures greater than or equal to 1.8 MPa suction and have seals designed for wet H₂S service.