Figure 13.
The buffer contains pre-compacted bentonite and pellets between the canister and wall rock. The injection filter enters the canister and connects to the buffer through an inlet. A flow path moves from the inlet into the buffer, then continues across the closed engineering gap towards the wall rock. Reduced dry density appears at the closed engineering gap and in the pellet zone.Sketch showing inferred gas pathway along the low-density zone formed as a result of the closure of the engineered gap. See text for full description