handholes
Reach-in service ports
Handholes are openings in equipment, utility boxes, or underground vaults sized for a hand to reach through—smaller than manholes, which accommodate a whole person.
They provide access for maintenance, wiring, or inspection without requiring entry: The technician lifted the handhole cover to splice the cables.
In manufacturing, handholes may be cut into containers or machinery casings for cleaning or adjustment.
Puts over, hides
- lidsRemovable container covers
- hatchesEmerges from egg
- openingsAvailable positions or gaps
- aperturesHoles or gaps
grates · entry points · ingress · egress · flush-mounted · recessed · surface-mount
Formal assessment of condition
- servicingPerforming routine maintenance
- splicingConnecting by interweaving ends
- repairRestore to working order
- troubleshootingSystematic fault diagnosis
technician · diagnostics · replacement · cleaning · testing · faults · locating · tracing
Employer-imposed work stoppage
- tagoutContact that retires baserunner
- confined spaceRestricted enclosed area
- traffic conesPortable roadway warning markers
- barricadesStructures preventing passage
warning signs · hard hat · safety vest · gloves · ventilation · shoring · hazard assessment · OSHA
Supporting outer structure
- coverProtect by overlaying
- lidRemovable container cover
- boltsThreaded metal fasteners
- gasketMechanical leak preventer
drain · sump · racks · brackets · grounding · knockout · polymer · concrete
Street-level underground entries
- conduitsChannels for conveying substances
- junction boxesProtective housings for wire splices
- underground networksHidden interconnected systems below
- distribution networksSystems moving goods outward
covers
Puts over, hides
apertures · grates · entry points · ingress · egress · flush-mounted · recessed · surface-mount
inspection
Formal assessment of condition
- servicingPerforming routine maintenance
- splicingConnecting by interweaving ends
- repairRestore to working order
troubleshooting · technician · diagnostics · replacement · cleaning · testing · faults · locating · tracing · preventive
lockout
Employer-imposed work stoppage
- tagoutContact that retires baserunner
- confined spaceRestricted enclosed area
- traffic conesPortable roadway warning markers
barricades · warning signs · hard hat · safety vest · gloves · ventilation · shoring · hazard assessment · OSHA · permits
frame
Supporting outer structure
gasket · drain · sump · racks · brackets · grounding · knockout · polymer · concrete · fiberglass
manholes
Street-level underground entries
- conduitsChannels for conveying substances
- junction boxesProtective housings for wire splices
- underground networksHidden interconnected systems below
handholesmanholes
Street-level underground entries
crawl spaces · vaults · entry points · entryways · portals