You have used j as both a constraint index and a summation index in the xMaxP constraint:
con xMaxP{j in Ts}:sum{i in Ps} inflow[i,j]<=InspectionCapacity[j]*sum{j in Ts}InspectDecision[j];
Corrected version:
con xMaxP{j in Ts}:sum{i in Ps} inflow[i,j]<=InspectionCapacity[j]*InspectDecision[j];
To see that it does what you want, check the two cases InspectDecision[j] = 0 and InspectDecision[j] = 1.
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