2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/177332In this paper we analyse the possibility of constructing singularity-free inhomogeneous cosmological models with a pure radiation field as matter content. It is shown that the conditions for regularity are very easy to implement and therefore there is a huge number of such spacetimes.13 pages, LaTex, ws-mpla, to appear in Modern Physics Letters AGeneral Relativity and Quantum Cosmologytext