Selection and installation of manhole tops and gully tops within the highway. Guide Ingestion-build-61878 For an operating temperature range

For an operating temperature range from –20 °C to +60 °C

This document is only applicable to safety devices for functional safety communication which are developed according to IEC 61508 and IEC 61784‑3

Marking requirements are given in greater detail

BS EN ISO 15798:

— ensuring that electrical emergency equipment continues to be functional until evacuation is complete (see EN 45545‑6)

Selection and installation of manhole tops and gully tops within the highway. Guide Ingestion-build-61878 For an operating temperature range1 Scope This British Standard gives guidance for the selection and installation of manhole tops and gully tops conforming to BS EN 1241: 2015 to BS EN 1246: 2015 for covering gullies, manholes and inspection chambers to be used in conjunction with other components and materials to form a safe, durable, maintainable and usable installed system for highway applications.