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Functional safety. Safety instrumented systems for the process industry sector - Guidelines for the application of IEC 61511-1. Original standard UNE-EN 61511-2-2017 in PDF full version. Additional info + preview on request

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Functional safety. Safety instrumented systems for the process industry sector - Guidance for the determination of the required safety integrity levels. Original standard UNE-EN 61511-3-2017 in PDF full version. Additional info + preview on request

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Radiation protection instrumentation. Radon and radon decay product measuring instruments - Specific requirements for 222Rn and 220Rn measuring instruments. Original standard UNE-EN 61577-2-2017 in PDF full version. Additional info + preview on request

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Corrigendum - Electric components - Reliability - Reference conditions for failure rates and stress models for conversion. Original standard UNE-EN 61709-2017 AC-2019 in PDF full version. Additional info + preview on request

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End-face image analysis procedure for the calibration of optical fibre geometry test sets - Part 1: Introduction and roadmap for standardization. Original standard UNE-EN 61745-2017 in PDF full version. Additional info + preview on request

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Fibre optic interconnecting devices and passive components. Fibre optic connector interfaces - Type DiaLink connector family. Original standard UNE-EN 61754-32-2016 in PDF full version. Additional info + preview on request

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