MCNP Verification Calculation of Activity for Waste Stored in a Trap Repository

To offer the source for a trap repository decommissioning engineering, the activity of medium solid radioactive waste was calculated by point-kernel ray-tracing technique and the result is 6.4×1014 Bq. To appraise the result, a verification calculation was performed by MCNP and the result is 4.82×1014 Bq. It shows that point-kernel result is a little bigger than MCNP result. Therefore, point-kernel result is satisfied for engineering design.