BORATED POLYETHYLENE

“...a simple solution to protection from neutron radiation.” 

High-density borated polyethylene, supplied by MarShield, is a lightweight, cost-effective solution for attenuation and absorption of neutrons. 

FEATURES & BENEFITS 

• 5% boron content by weight, stocked in 1” X 48” X 96” sheets 

• Consistent density and homogeneity 

• Durable over a wide temperature range 

• Easy installation and fabrication 

• Custom cutting and CNC machining services available 

• Low density polyethylene also available with no boron content

APPLICATIONS 

HOT CELLS 

STORAGE CONTAINERS 

DETECTION SYSTEMS

 

HEAVY TUNGSTEN

TUNGSTEN RADIATION SHIELDING FOR NUCLEAR, MEDICAL & NDT 

MarShield Radiation Shielding are experts in the in the customization of tungsten heavy alloy for the Nuclear Energy, Nuclear Medicine / Radioisotope, diagnostic imaging and non-destructive testing industries. 

WHY TUNGSTEN? 

Tungsten Radiation Shielding has a density of up to 18.89 g/cm3 vs. lead at 11.34 g/cm3. It’s ease of mechanical processing / machining, high ductility and strength makes it a viable option for many applications where lead is not feasible whether it be for size reduction, maximizing weight in large or small cavities or for radiation shielding. Tungsten Radiation Shielding is strong and highly customizable into precision components. 

RADIATION PROTECTION – NUCLEAR, MEDICAL & NDT 

• Tungsten Radiation Shielding is an excellent material for shielding, guaranteeing that radiation exposure is kept to a minimum and ensuring that ALARA goals in the workplace. Machinability, radiographic density, strength, low toxicity, and heat resistance allow for superior design adaptability vs. other shielding materials. Tungsten Radiation Shielding are easily customizable 

• Isotope vials and containers 

• Custom shielding components 

• Collimators for x-ray detectors 

• Multi-leaf collimators 

• Collimators for radiosurgery

 

HIGH DENSITY CONCRETE BLOCKS

“...high-density blocks are the best choice for structural shielding.” 

MarShield supplies high-density concrete that is a cost-effective alternative to lead brick shielding in large builds. The significant attenuation provided by high-density blocks surrounding a large source provides a major reduction in additional shielding requirements within a facility. 

FEATURES & BENEFITS 

• Many sizes of blocks are available 

• No hazardous dust emissions during installation 

• Weather resistant 

• Density up to 300 lbs/ft3, more than 50% higher than standard-density concrete 

• Can be used for gamma and neutron shielding

APPLICATIONS 

PLANT CONSTRUCTION 

NON-DESTRUCTIVE TESTING ROOMS 

PERMANENT SHIELDING

 

LEAD SHOT

“...lead shot is an easy, cost effective shielding solution for areas where solid lead is impractical, due to location, shape, or accessibility.” 

MarShield lead shot is an easy, cost-effective shielding solution for areas where solid lead is impractical, due to location, shape, or accessibility. Lead shot can also be used to provide temporary shielding by placing the bag around the point source or pouring into a container. We stock lead shot in standard 25 lb. canvas bags. For added strength and durability, we also offer lead shot in bags manufactured of 600 Denier vinyl coated black nylon. Lead shot is also available in bulk drums. Our standard lead shot is #8 (.09”/2.29mm diameter). Density is approximately 436 lbs. per cubic foot.

WE OFFER 

Chilled Lead Shot – Highly polished, uniformly-round, accurately-sized and consistently-dense shot. Graphite-coated. Custom embroidery or printing is available on application. 

Fire Rated Lead Shot Bags– 12.5 lb. bags of # 7.5 lead shot for Aerospace industry. Encapsulated in 22 oz PVC in Red certified FAR 25.853 (A) complete with lifting handle straps MIL-W-4088K Type II Class IA.

 

LEAD BRICKS

“...ideal for new construction to reduce wall or ceiling thickness and achieve space savings.” 

MarShield manufactures straight and interlocking lead brick shielding which provides the best choice for construction where temporary or permanent shields or storage areas are required. A choice of straight or interlocking brick offers flexibility in design and construction choices. Lead bricks are commonly used when sheet lead is impractical or unavailable in required sizes.

FEATURES & BENEFITS 

• Cast from 99.9% pure lead 

• Standard and custom sizes available 

• Interlocking bricks use chevron “V” shape tongue and groove to prevent radiation streaming 

• Versatile and reusable for multiple applications 

• MarShield provides the widest range of thicknesses available in the industry with standard sizes from ¾” to 2 ½” thickness of lead

APPLICATIONS 

- HOT CELLS 

- RADIOACTIVE MATERIAL 

-TRANSPORTATION TEMPORARY SHIELDING