atlas detector cooling work package project document no institute created 08 10 2003 page 1 of 21 atc tl ep 0003 modified 05 02 2004 rev technical specification draft plant for lar calorimeter unit 3 prepared by bonneau pierre checked approved distribution list history changes date pages description update drawing s number change n was ed 0002 add evm numbers table contents introduction 4 data sheet 2 system characteristics 5 lcs v operating principle 6 sub station 7 control 8 pneumatic rack associated equipments main 11 inventory the services 12 documents drawings 13 cost estimate materials manpower 15