SAFETY MANHOLE Safety Manhole
- Development Background: In clean water, sewage, and wastewater treatment plants, there are many manholes (openings) for maintenance, mechanical inspection, and equipment installation, and workers and pedestrians are always exposed to the risk of falling..
- Simultaneously with opening the manhole cover, the handrail (safety railing) and barrier belt automatically unfold to block the openingwhich does the world's first safety manhole with a built-in handrailis. It is a field-oriented technology that completely prevents safety accidents for workers and pedestrians in advance.
Key Features
1 Key Features
- Perfect Dual Safety System (Dual Safety) Even when only one side (1 DOOR) of the cover is opened for simple inspection or water sampling, the built-in handrail prevents falls. In the case of full opening for equipment deployment, etc., the handrail is automatically interlocked to form a railing, completely preventing secondary falls of workers.
- Revolutionary Work Time Reduction (Time Saving) Previously, a fall prevention fence or safety zone marking tape had to be installed separately during manhole work, but with the safety manhole, safety equipment is established immediately upon opening. Work can begin immediately with only a ladder and essential tools without any extra tools or preparation time, significantly reducing preparation and withdrawal times.
- Safe Pedestrian Protection Even in Dark Places (Pedestrian Protection) To ensure safe operation even in underground treatment plants with low illumination or darkness, glowing and LED signs for 'Under Work', 'OPEN', and 'Keep Out' can be selectively applied to prevent pedestrians from falling.
- Single-person Opening/Closing and Non-powered Automatic System (Easy & Auto System) Despite being a large manhole, it is designed so that a single person can open and close it safely and sufficiently. The handrail automatically opens and closes using the rotational force (precision gear interlocking) generated when opening and closing the cover, requiring no separate power or electricity at all.
Operation Sequence
2 Product Type
1 DOOR Open / Inspection Hole Type (For Inspection and Water Sampling)
Selective Opening and Single-person Operation: Even for large manholes, when the purpose is solely for inspection or treated water sampling, there is no need to open the entire manhole, opening only one door (one side of the manhole)to use it. Since the covers are separated individually, they are thoroughly designed to be field-centric so that a single person can easily open and close them.
Perfect Fall Prevention: Even if only one door is opened, a secondary fall prevention barrier is immediately formed at the bottom by the built-in handrail and barrier belt, completely protecting the safety of workers and pedestrians.
The form of a single-structure opening **'1-stage manual manhole with built-in handrails'**
2 DOOR (Fully Open) / Equipment Entry Type (For Equipment Deployment and Facility Maintenance)
Full opening and automatic handrail formation: For facility maintenance or when bulky machinery needs to be introduced (brought in), a **'full opening (facility maintenance MODE)'** is performed by opening both doors.
- Safety handrail interlocking system: When the two doors are fully opened, the handrails interlocked with the manhole cover and precision gears unfold together, forming an **'automatic protective handrail'** that surrounds the entire large opening..
- Even if the wide equipment loading hatch is open, this system prevents secondary falls of workers and clearly alerts pedestrians that it is a work area to prevent major accidents.
The form of a single-structure opening **'1-stage manual manhole with built-in handrails'**
4 DOOR Inspection Type
Full opening and automatic handrail formation: For facility maintenance or when bulky machinery needs to be introduced (brought in), a **'full opening (facility maintenance MODE)'** is performed by opening both doors.
- Safety handrail interlocking system: When the two doors are fully opened, the handrails interlocked with the manhole cover and precision gears unfold together, forming an **'automatic protective handrail'** that surrounds the entire large opening..
- Even if the wide equipment loading hatch is open, this system prevents secondary falls of workers and clearly alerts pedestrians that it is a work area to prevent major accidents.
The form of a single-structure opening **'1-stage manual manhole with built-in handrails'**
4 DOOR equipment hatch type
Full opening and automatic handrail formation: For facility maintenance or when bulky machinery needs to be introduced (brought in), a **'full opening (facility maintenance MODE)'** is performed by opening both doors.
- Safety handrail interlocking system: When the two doors are fully opened, the handrails interlocked with the manhole cover and precision gears unfold together, forming an **'automatic protective handrail'** that surrounds the entire large opening..
- Even if the wide equipment loading hatch is open, this system prevents secondary falls of workers and clearly alerts pedestrians that it is a work area to prevent major accidents.
The form of a single-structure opening **'1-stage manual manhole with built-in handrails'**
| Conventional manhole | Ringcon safety manhole with automatically built-in handrail |
|---|---|
| Required manpower: 2 or more people (Heavy labor) | Required manpower: Can be opened by a single person (Safe and light operation) |
| Fall prevention system: Separate safety guardrail Manual installation required | Fall prevention system: Simultaneously with opening Automatic formation of ANSI/OSHA standard handrails |
| Power and tools: Additional tools required for assembly | Power and tools: Non-powered operation (No separate power source or tools required) |
| Inspection Flexibility: Fully exposed with cover-integrated opening | Inspection Flexibility: According to the purpose of inspection/maintenance Individual doors can be separated and operated |
Passed load test (perfectly protecting against accidental on-site impacts).
Meeting OSHA (Occupational Safety and Health Administration) specifications.
