A VUV spectrometer for monitoring the brightness of line emission from light impurities such as carbon and oxygen, and also from metal impurities for safe operation of the JT-60SA device, will be prepared. The VUV spectrometers are installed at P10 horizontal port and view the plasma horizontally without viewing the neutral beams directly. Two grazing incidence spectrometers will be prepared: One spectrometer (high resolution) covers a wavelength range of 0.5  – 5 nm with a holographic grating having 1200 grooves/mm, and the the other spectrometer (survey) covers  a wavelength range of 0.5 – 50 nm with a holographic grating having 300 grooves/mm. The light dispersed by these gratings is focused on a flat plane with a width of ~ 26 mm. On the flat focal planes, a CCD camera with an imaging array of 1340 x 1300 pixels having a size of 20 x 20 mm detects the dispersed light. The object optics with a viewing chord similar to that of the VUV spectrometers, for example, by using zeroth order diffraction (reflection) light, is prepared for an absolutely calibrated visible spectrometer for the purpose of relative calibration with a branching ratio method. The specifications of the VUV spectrometers are shown in Table 1.