Figure 52. Typical separation space in an improperly bonded segment of the 

 joint in the 66-inch-diameter capsule. 



note that the edges of the 

 drilled out cavity are lined 

 with many fine cracks even after 

 filling of the cavity with adhesive 



Figure 53. Results of a local trepanning operation in the joint of the 66-inch- 

 diameter capsule. 



82 



