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visibly clean
Definition
absence of surface contamination when examined with a specific light source, angle of incidence and viewing distance using normal or magnified visionNotes
- NOTE 1 Different inspection methods are available, depending on: a. hardware to be inspected, in term of size and accessibility and sensitivity to contamination b. inspection distance c. light spectra (including UV), intensities and angles
- NOTE 2 The 'visibly clean' level roughly corresponds to an obscuration factor smaller than 300 mm2/m2 when inspected from a distance of 30 cm to 60 cm with an oblique white light of 540 lx to 1620 lx.
- NOTE 3 Typical magnification levels range from 2x to 8x.
Relations
- ECSS-Q-ST-70-08C — contamination
- ECSS-S-ST-00-01C — contamination
- ECSS-E-ST-35-06C Rev.2 — pre-cleaning
- ECSS-E-ST-35-06C Rev.2 — precision cleaning
- ECSS-E-ST-50-11C — source
- ECSS-E-ST-50-12C Rev.1 — source
- ECSS-E-ST-40-07C — source
- ECSS-E-ST-35-06C Rev.2 — VC
- ECSS-E-ST-35-06C Rev.2 — VC
- ECSS-E-ST-35-06C Rev.2 — visibly clean plus ultraviolet
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