Tandem Computers Inc’s Ungermann-Bass Inc in Santa Clara, California is to supply Westinghouse Hanford Co, a primary contractor on the US Department of Energy’s Hanford facility, for the Net/One LAN Manager network operating system for use throughout the complex in Washington state in Ungermann-Bass’s biggest order yet for the line: the installation will convert up to 200 file servers to the OS/2-based network operating system on the 560 squaremile site, which links more than 6,300 desktop personal computers, asynchronous and 3270 terminals to a Cray X-MP, and Hitachi Data Systems, DEC and Hewlett-Packard minis and mainframes; the value of the pact was not given.