Even if you think you may remain in your present location, why not have the flexibility to adapt to evolving opportunities? NELCO Concrete Blocks are designed to offer maximum modularity and versatility. High-Density Concrete Block is available in five standard densities to ensure shielding integrity for new construction or upgrades. MegaShield™ Modular Block is specially molded for superior interlocking strength and is pre-cast in several densities. The team at NELCO can easily help you determine the optimal block and density for your facility.
High-Density Concrete Blocks provide protection for a range of scenarios. They are made to site-specific spacial requirements for gamma and neutron radiation with five standard densities. In new construction or room upgrades, the interlocking design of our HD Block ensures shielding integrity. High-Density Concrete Blocks are an ideal solution for therapeutic modalities, including linear accelerators, proton therapy, and HDR rooms, as well as industrial applications requiring shielding materials. They can be utilized for maze walls and complete vault construction, with or without mortar (for modularity), depending on physics requirements and construction design.
NELCO can even combine our High-Density Concrete Blocks with other materials for each unique shielding need.
Versatility
Can be used in new or upgrade vault construction
Interlocking Shielding
Interlocking design ensures shielding integrity
Space Savings
Higher density block saves space vs. traditional concrete construction
Time Savings
Accelerate lead time and construction compared to cast-in-place concrete
Modularity
Dry-joint design is easily uninstalled for relocation
Fiscal Gains
Potential tax savings with capital equipment classification
Warranty
Limited Lifetime Warranty
Product
High Density Concrete Block
Usage
Linear accelerator vaults, proton therapy, HDR, Gamma Knife, CyberKnife, cobalt, nuclear medicine, and industrial applications
Dimensions
6″H x 6″W x 12″D
Construction
145 lbs/cu ft; 240 lbs/cu ft; 250 lbs/cu ft; 288 lbs/cu ft; 300 lbs/cu ft
(custom densities available)
Design
Interlocking modular units; available in square-edge blocks at the same densities
Modularity: Quickly and easily assembled or disassembled for relocation
Time Savings: Pre-cast independent of permit process for fast construction
Fiscal Gains: Potential tax savings with capital equipment classification
Product: MegaShield™ — modular, multi-density (site-specific) concrete blocks
Usage: Linear accelerator vaults, proton therapy, HDR, Gamma Knife, CyberKnife, cobalt, nuclear medicine, and industrial applications
Densities: 147 lbs/cu ft — standard; 240 and 250 lbs/cu ft — high density; custom densities can be formulated as required
Manufacturing: Stable interlocking concrete block design; LEED Certified upon requestCompliance: Meets all regulatory and safety compliance requirements
What type of foundation is required for a MegaShield™ vault?
MegaShield™ requires a foundation just like any other vault. In fact, it is no different than a CIP/PIP vault foundation.
What energy of accelerator will work within the system?
Our standard MegaShield™ vault is designed for a dual energy Linear Accelerator 6 and 18Mev with IMRT Capability. The vault is also designed for 100% occupancy on the four walls and ceiling. It can be customized to meet specific requirements while maintaining modularity.
What is the system made of?
The standard MegaShield™ Blocks are 147 or 240 pound per cubic foot concrete with some additives that will reduce block spawling.
How much does a block weigh?
The average 2′‐0″ x 2′‐0″ x 6′‐0″, 147 pound per cubic foot block weighs 3,528 pounds. The 240 pound per cubic foot block weighs 5,760 pounds.
When are the blocks delivered on site?
Block delivery begins three weeks prior to installation. This is because each truckload can only carry 12 blocks at a time due to weight restrictions.
What is the standard time frame for erecting a MegaShield™ vault?
Typically 3 to 5 weeks from when installation starts to when the door is installed.
The pedigree of the most trusted family of shielded doors in history. GUARDIAN™, the only shielded doors with an actual pedigree, serve the DIAGNOSTIC (PET, PET/CT, X-Ray, and MRI), RADIATION THERAPY (Swing, Sliding, and Bi-Parting), and INDUSTRIAL SHIELDING (Swing and Sliding) needs of the global community, making them the most comprehensive family of shielded doors anywhere.