diff --git a/Database/PWR/UOX/PWR_900_30Wg_third/weight.dat b/Database/PWR/UOX/PWR_900_30Wg_third/weight.dat
new file mode 100644
index 0000000000000000000000000000000000000000..9a7cd5da58f7e6003762c5584ea339c817666030
--- /dev/null
+++ b/Database/PWR/UOX/PWR_900_30Wg_third/weight.dat
@@ -0,0 +1 @@
+PARAM 0.0125575 0.00053602 1.80023e-06
\ No newline at end of file