An impingement shield assembly for a turbine, the assembly comprising: a first impingement shield portion ; a second impingement shield portion joined to the first impingement shield portion; a first connection portion formed on the second impingement shield portion, the first connection portion including a first base portion coupled to the second impingement shield portion and a first interlock portion that extends outwardly from the first base portion, wherein the first interlock portion includes a first upper portion and a first downward edge having a fixed relationship between them, and wherein the first upper portion and the first downward edge define a first recess; and a second connection portion formed on the first impingement shield portion, the second connection portion including a second base portion coupled to the first impingement shield portion and a second interlock portion that extends outwardly from the second base portion, wherein the second interlock portion includes a second upper portion and a second downward edge having a fixed relationship between them, and wherein the second upper portion and the second downward edge define a second recess; a first wedge strip portion shaped and configured to mate with the first recess, wherein the first wedge strip portion includes a first top edge and a first mating edge, wherein the first top edge and the first mating edge have a fixed relationship between them that is an inverse of the fixed relationship between the first upper portion and the first downward edge; and a second wedge strip portion shaped and configured to mate with the second recess, wherein the second wedge strip portion includes a second top edge and a second mating edge, wherein the second top edge and the second mating edge have a fixed relationship between them that is an inverse of the fixed relationship between the second upper portion and the second downward edge; wherein the first wedge strip portion is welded to the second wedge strip portion. a first impingement shield portion ; a second impingement shield portion joined to the first impingement shield portion; a first connection portion formed on the second impingement shield portion, the first connection portion including a first base portion coupled to the second impingement shield portion and a first interlock portion that extends outwardly from the first base portion, wherein the first interlock portion includes a first upper portion and a first downward edge having a fixed relationship between them, and wherein the first upper portion and the first downward edge define a first recess; and a second connection portion formed on the first impingement shield portion, the second connection portion including a second base portion coupled to the first impingement shield portion and a second interlock portion that extends outwardly from the second base portion, wherein the second interlock portion includes a second upper portion and a second downward edge having a fixed relationship between them, and wherein the second upper portion and the second downward edge define a second recess; a first wedge strip portion shaped and configured to mate with the first recess, wherein the first wedge strip portion includes a first top edge and a first mating edge, wherein the first top edge and the first mating edge have a fixed relationship between them that is an inverse of the fixed relationship between the first upper portion and the first downward edge; and a second wedge strip portion shaped and configured to mate with the second recess, wherein the second wedge strip portion includes a second top edge and a second mating edge, wherein the second top edge and the second mating edge have a fixed relationship between them that is an inverse of the fixed relationship between the second upper portion and the second downward edge; wherein the first wedge strip portion is welded to the second wedge strip portion. <EOS>