Читать книгу Patty's Industrial Hygiene, Physical and Biological Agents - Группа авторов - Страница 124

Alternatives to direct measurement of optical radiation may be needed when reliable measurement instruments are not available or when installation of a source is being planned or designed. Alternative methods include calculations of radiometric values and use of lamp classifications. Other source‐related guidelines, such as the UV Index (UVI) for solar radiation and shade numbers for welding, are discussed in Section 6.