****************************************************** PR # 41186 Optical and ROSAT observations clearly show that the radio-luminous quasar 3C254 is embedded in a dense intracluster medium (ICM). Such an ICM would possess a cluster cooling flow with a mass deposition rate of 1000 solar masses per year. As such, this system may be similar to IRASP09104+4109 but at a higher redshift. We propose ASCA observations in order to detect and measure the associated cluster iron line and thus determine the metallicity. This would be the most distant cluster for which the metallicity has been measured and would produce strong constraints on cluster evolution models. ******************************************************