A leak check was performed on the module when it was in the conditioning station today. There were no external leaks found. When the coolant lines were check a small leak was found in the heat shield circuit. Base leak rate was 6.7 x 10^-9 atm cc /sec and rose to 4.1 x 10^-9 atm cc /sec quickly (~3 seconds) and remained there for the 2 minute test. The remaining lines had small responses as usual but the highest response was in the low 10^-8 atm cc /sec range. The pressures were recorded as 1.2X10^-6 T, 2.7 x 10^-6 T and 1.1 10^-5 T in the service cap, containment box, and secondary respectively. The module was then vented with argon which took ~1.5 hours, vessel was pressurized to ~ 1 psi. A panel was then removed to leak check the feed through stem of the heat shield pressure of the line was recorded to be 0.0 x 10^-4 T and a leak rate of 1.3 x 10^-8 atm cc/sec was achieved. The stem was sprayed and no response was found. Swipes of the were taken of the panel (150 counts) and the containment box (3000 counts). The panel was then returned and the vessel roughed out for the weekend, it will be vented and moved to the south hot cell on Monday where the VCR fittings will be checked again and then tightened.