Guardian Radiation Therapy Swing Door
NELCO has the largest installed base of shielded therapy doors in the Americas.
Our Guardian Swing Door systems are designed to maximize patient throughput and meet all clinical and regulatory requirements. These systems are available in a variety of widths and shielding thicknesses. NELCO customizes the design, manufacture, and installation of each door to meet the unique needs of the facility, according to the physicist’s report.
Standard swing door system packages (over 30 in all) include a custom-designed steel frame, steel-faced door, shielding materials, operating system, and installation. Optional door elements include safety features, door finishes, and a preventative maintenance program.
NELCO also offers Guardian Sliding Door systems and offers an array of services, from helping you chose the best equipment for your facility to aiding in the design of your vault.
Uses
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Shielding rooms
- High and low energy linear accelerators
- Proton therapy
- Cobalt therapy
- Radiosurgery
- CT Image-Guided IMRT
- IMRT / IGRT
- Other medical and industrial modalities
Dimensions
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Thickness varies depending on lead thickness
- Full 4' x 7' opening
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Weight varies depending on lead thickness
- Core components subject to the approval of the Physicist of Record
- Custom widths, heights and thicknesses available upon request
Components
Frame
Manufactured from ¼” minimum thick A-36 Steel plate, designed with a 4’ x 7’ clear opening to allow equipment installation (include ¼” thick lead-lined threshold, two Edwards’s 503a kill switches, and factory prime coat); two types available:
• Pre-assembled, set in concrete, grouted into an existing doorway (used in new vaults)
• Custom, stick-built at the site to conform to existing conditions (used in existing vaults)
Proprietary design offers a full 4’ clear opening when the door is in the 90-degree, full open position (allows a linear accelerator to be brought in and out without removing the door ); when in full open position, door is flush with the recessed doorframe
Door
All doors manufactured with ½” or ¾” steel perimeter flat bar and ¼” minimum thick A-36 Steel faceplates (include two appropriately-sized Brookfield weld-on hinges, two dull chrome surface mounted door pulls, one heavy duty floor stop, factory applied prime finish)
Hinges
Heavy duty, cold-rolled or stainless steel adjustable hinges with proper width to suit frame dimensions. Hinges are chosen to accommodate required door weight and radial load.
Shielding Materials
Can consist of any combination of lead brick or sheet, 5% borated polyethylene sheet, or rigid high-density polyethylene sheet.
Operating System
All swing doors are outfitted with Brookfield automatic door operators based on door size and weight. Operator types include:
• NB-500 – for doors weighing up to 4,500 pounds
• NB-1000 – for doors weighing up to 12,000 pounds
• NB-2000 – for doors weighing up to 20,000 pounds
Each operating system includes two press wall switches sequenced at Push to Open and Push to Close.
Optional Components
Safety Features
• Partial Open Feature -- includes two press wall switches outside the vault sequenced at Push to Open / Close and Partial Open
• SuperScan™ Presence Sensor System -- detectors installed on each side near the top of the door to detect any object passing through the presence area, sending a signal to the door operator to Stop or Stop and Reverse the door to its open position.
• Pressure Sensitive Tape Switches --installed on each side of the swing door system; if more than 8 oz. of pressure is detected, the device sends a signal to the door operator to Stop or Stop and Reverse the door
• Battery Backup -- allows the door to be opened in the event of a power failure; includes a float charger to provide a constant charge to the battery
Door Finishes
Variety of finishes including plastic laminate, metal veneering, wall covering, and wood veneering
Preventative Maintenance Service Contracts
Service contracts available upon request
Features and Benefits
Experience – NELCO was the first company to design a swing door system with an offset hinge.
Ease of access – Our offset hinge allows for a full four-foot opening of the door, large enough to allow equipment into the room without removing the door from its frame.
Safety – NELCO adheres to the highest safety standards for swing door systems.
Increased Productivity – Partial open feature allows therapists to open the door part-way, saving time and increasing patient throughput.
Finish options – Finish options allow the door to match the interior design of any facility.
Customization – NELCO provides dimensions and thicknesses to meet any design need.
FAQs
Q: In what SPEC section is the Swing Door?
A: Section 08 56 49 - NEUTRON / RADIATION SHIELDING SWING DOORS
Q: Do NELCO Swing Door products pass LEED certification requirements?
A: Yes.
LEED™ NC Version 2.2, MR Credits 4.1 and 4.2: Recycled material content
LEED™ NC Version 2.2, MR Credit 5.1: Local / regional materials
LEED™ NC Version 2.2, EQ Credit 4.1: Volatile Organic Compound (VOC) content
Q: How large is the gap under the door?
A: The average gap is ½’’.
Q: What are the door speeds?
A: Door speeds are based on ANSI standards and determined by the weight and radial load of the door. Typical speeds are between 10 and 40 seconds for Full Open and 5 and 20 seconds for Partial Open.
Q: Is shielding required around the jamb area?
A: It depends on the physics criteria and design of each facility.
Q: What are the safety features in the event of a door failure?
• Door operator is on facility electric
• Emergency electric or generator if power goes out and facility has a backup system
• Optional battery back-up
• Operator has a disconnect allowing door to be opened manually
Q: Can I use a Swing Door in an HDR Room?
A: Yes, NELCO’s Swing Door systems can be used in several radiation therapy applications, and are perfectly suited for HDR Rooms. As always, shielding requirements for the doors are dependent on a physics report. If required, NELCO can provide any needed physics services.
