Abstract: A pulsed coolant thermocouple temperature measuring system is arranged to measure temperature above a limit operating temperature of the thermocouple includes a rake which is disposed across a hot gas path combustion turbine. Multiple thermocouple are disposed in respective channels in the rake to sense the temperature of hot gas from surplus which enter the thermocouple channels through respective sampling ports in the rake. The sample gas flows merge with a common channel and exhaust through a hot gas sample valve. When any of the thermocouples reaches a limit temperature, a coolant valve is opened as the hot gas valve is closed so as to drive coolant air into the common channel over the thermocouple through the thermocouple channels and the sampling ports into the hot gas path.

Abstract: Loose shelves are anchored against the bottom wall of a cabinet for purpose of shipping. A clip has a flat side enabling it to be slipped, while in contact with the upper surface of the stacked shelves, into a bore in a side wall of the cabinet which bore is substantially tangent to the top of said stack. Thereupon a screwdriver slot in the end of the clip is used to rotate the clip 180.degree. positioning a flange segment on the clip between the shelves and said side wall of the cabinet. The clip has a cylindrical portion on one side of said flange segment for insertion in said bore while on the other side of said flange segment the clip flares to provide a camming portion which locks it in place upon said rotation. A plurality of said clips are used at opposite ends of said shelves. Reversal of the installation procedure enables the clips to be removed and the shelves to be freed.