Environmental Data Coding Specifcation        ISO IEC LogosRight Title Graphic
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Status: STD 2005/06/07
Code: 673

Concept definition: An <APERTURE> in a utility service <OBJECT> (for example: an item of <EQUIPMENT>, a <FLOOR>, a <ROAD>, the <LAND>, a <SEWER> and/or other conduit) through which <PERSONNEL> may pass to gain access to certain <COMPONENT>s; manhole [SOED, "manhole"].
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