It said Wu's wife, Yang Lan, is a presenter on Phoenix, a stellite TV channel that is a joint venture between Murdoch's Star TV and interests associated with Liu.
32.
While not a hazard to the general public, about a third to a half of nuclear worker exposures could be traced to the use of Stellite and to trace amounts of cobalt in stainless steels.
33.
While Stellite remains the material of choice for certain internal parts in industrial process valves ( valve seat hardfacing ), its use has been discouraged in radioisotope with a five year half life that releases very energetic gamma rays.
34.
Since the United States nuclear power industry has begun to replace the Stellite valve seat hardfacing in the late 1970s and to tighten specifications of cobalt in stainless steels, worker exposures due to cobalt-60 have dropped significantly.
35.
Commonly applied materials include cobalt-based alloys ( such as stellite ), nickel-based alloys, chromium carbide alloys and NOREM . Hardfacing is sometimes followed by hot stamping to refinish the part or add color or instructional information to the part.
36.
"' NOREM "'is a hardfacing material developed by Electric Power Research Institute ( EPRI ) to deal with radiation safety issues associated with the use of cobalt alloys in nuclear power station coolant systems ( see stellite for a discussion of the problem ).
