6. Rendering must be carried out either:
(i) so that
(a)material must be heated to a core temperature of at least 133°C for 20 minutes at a pressure of 3 bar. The particle size of the raw material prior to processing must be reduced to at least 50 mm by means of a prebreaker or grinder;
(b)recording thermographs must be provided at the critical points of the heating process to monitor the heat treatment; or
(ii) using any of the systems of heat treatment described in Commission Decision 92/562/EEC(1) subject to the conditions contained in that Decision.
OJ No. L359, 9.12.92, p.23.