Scope and objective This technical report provides information on the IEC documents concerning reliability for optical fibres@ optical connectors@ optical passive components@ optical active components@ optical amplifiers@ and optical dynamic modules used for optical fibre communications. Documents on reliability include summaries of reliability theory and quality management methods@ technical information on failure mode analysis and failure mechanisms@ lifetime and fit-rate estimates using acceleration tests@ test items@ conditions@ and pass/fail criteria in reliability qualification tests@ and tests and measurement methods for optical fibres@ optical components@ and optical modules. Each SC in TC86 has already created documents on reliability. This technical report provides this information in a user-friendly manner.