Bubba G, Chris S, Tyler G

A focal point of yesterdays extended maintenance phase was exercising the footing of the HAM 7 chamber. This was performed partially to ensure that future efforts to hoist and move the HAM 7 chamber could proceed without issues related to any adherances between the footing and the grout below. 

Per Bubbas request, I fabricated two crossmembers that span the framework of the HAM chamber. These crossmembers utilize existing holes within the footing and allowed for the use of two single-stage 10 ton Enerpac hydraulic rams to be placed at opposing ends of the chamber for lifting. With all 24 anchor bolts loosened and raised approximately .5"- 1". Pressure was applied to the jacks and subsequently the crossmembers. With minimal effort, the chamber was successfully lifted and freed from its grout footing.

As requested by Chandra, All 4 of the seismic bellows were adequately covered with ameristat and taped to ensure that no disturbed particulate might contaminate these areas during the work. Additionally, the near side bellows of HAM 8 were also sealed off.