What NELCO Worldwide does

NELCO Worldwide is a privately held specialty manufacturer and construction services firm founded in 1932 and headquartered in Burlington, Massachusetts. The company designs, manufactures, and installs radiation shielding systems for healthcare, industrial, nuclear, and security applications, operating from manufacturing facilities in five U.S. locations and two European sites, supported by global sales and project management offices. NELCO has completed over 3,121 projects across 47+ countries, serves 10 of the top 10 U.S. cancer centers and 48 of the top 50, and claims the largest installed base of shielded therapy doors worldwide.

Core technology centers on radiation shielding physics and materials engineering. Product lines include Guardian Radiation Shielded Doors (swing, slide, bi-parting, lead-lined wood and hollow metal, RF/MRI variants) with the Einstein Door Control smart-screen interface, the patent-pending DUO-Door dual-modality system that combines therapy and RF shielding in a single door with 100 dB attenuation at 100 mHz, and door operators supporting loads exceeding 125,000 lbs. Impervius Concrete comprises UltraShield and MegaShield modular block systems at 145-300 lbs/cu ft density for relocatable vault construction. Impervius RF/MRI shielding includes copper panel, soldered copper, and galvanized panel systems plus magnetic field containment. AlphaShield interlocking lead bricks, lead-lined drywall/plywood, leaded glass, HDR enclosures, and borated polyethylene round out the materials portfolio. Manufacturing is integrated with in-house design, engineering, and physics-testing capability.

The business operates a project-based enterprise model with custom quote pricing, multi-year contracts, and dedicated project managers. Revenue streams combine one-time product sales (shielding materials, door systems, modular blocks) with recurring professional services including emergency repair, modernization/upgrades, preventive maintenance, training, architecture and engineering consulting, and turnkey construction management. Primary customers are healthcare providers (hospitals, cancer treatment centers, imaging facilities) requiring shielding for linear accelerators, proton therapy, HDR brachytherapy, CT/PET, MRI, and nuclear medicine. Secondary segments include industrial NDT, radio-pharmaceutical, sterilization, nuclear power, border/port security, and anti-corrosive chemical processing. Key channel relationships include exclusive door operator partnership with Brookfield Industries, channel partnership with Oncology Systems Limited (OSL) for UK/Europe, and equipment compatibility with Elekta, Varian, Accuray, Siemens, and BrainLab.

Name

NELCO Worldwide

Legal name

NELCO Worldwide

Website

https://nelcoworldwide.com

Company type

Private

Founded year

1932

Operating status

Operating

Headcount range

51–100 employees

Short description

NELCO Worldwide is a Burlington, MA-based specialty manufacturer founded in 1932 that designs, manufactures, and installs radiation shielding systems including shielded doors, modular concrete vaults, RF/MRI shielding, and lead products for hospitals, cancer centers, nuclear facilities, and security applications across 47+ countries.

Ownership category

akta.pro rank

Product category

Radiation Shielding Products

NAICS

Irradiation Apparatus Manufacturing (334517), Architectural, Engineering, and Related Services (5413)

SIC

X-Ray Apparatus & Tubes & Related Irradiation Apparatus (3844)

akta.pro primary industry

Radiation Protection & Health Physics Services (ALARA programs, shielding design, RSO services) (EUAKAIAJ)

Keywords

• Radiation shielding solutions
• Lead shielding products
• Shielded door systems
• Medical vault construction
• RF MRI shielding

Headquarters

HQ city

Burlington

HQ country

United States

HQ region

North America

Offices16 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Radiation Shielding Products: Sale of shielding materials including lead products (lead-lined drywall, plywood, lead brick, leaded glass), concrete blocks, RF/MRI shielding panels, and shielded door systems. Products are custom-manufactured to specification and shipped to project sites.
2. Repair and Maintenance Services: Emergency repairs, scheduled maintenance, door system engineering evaluations, and parts replacement services. Service plans include priority emergency response, scheduled inspections, and performance optimization.
3. Modernization and Upgrades: Upgrade services for existing vault door systems including door operators, hinges, motion systems, performance optimization, and safety system enhancements. Extends equipment life at fraction of new construction costs.
4. Architecture and Engineering Services: Consulting and design services including architectural design, site selection, interior design, facility master planning, MEP engineering, structural engineering, physics design and testing, and equipment planning.
5. Construction Services: General contracting, construction management, preconstruction planning, and field coordination for medical and industrial radiation shielding projects. Includes complete turnkey design/build solutions.
6. Training Services: On-site functionality training, safety training, emergency procedures training, and door safety checklists for healthcare facility staff operating shielded door systems.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

NELCO Worldwide designs, manufactures, and installs specialized radiation shielding products — including shielded doors (Swing, Slide, Bi-Parting, RF/MRI variants), lead products (modular lead brick, lead-lined drywall/plywood/glass), high-density modular concrete blocks, and RF/MRI copper panel systems — for medical, industrial, and security customers. The offering is bundled with turnkey design-build construction, architecture and engineering services, plus repair, modernization, maintenance, and training services delivered through global manufacturing and project management offices across North America, the UK, the Middle East, and Asia.

Product overview

NELCO Worldwide is a global leader in radiation shielding solutions offering a comprehensive portfolio of physical products and services. The core product lines include Guardian Radiation Shielded Doors (Swing, Slide, Bi-Parting, Lead-Lined Wood, Lead-Lined Hollow Metal, and RF/MRI variants), Impervius Concrete (UltraShield and MegaShield modular block systems), Impervius RF/MRI shielding (Copper Panel, Soldered Copper, and Galvanized Panel systems with magnetic shielding), and Impervius Lead products (AlphaShield modular lead brick, lead-lined drywall/plywood, leaded glass/acrylic, lead plate/sheet, HDR enclosures, and industrial lead products). These products are complemented by Other Shielding offerings (Borated Polyethylene, custom hot cells, storage containers) and comprehensive Services (Repair, Upgrades/Modernization, Maintenance, Training) plus Architecture & Construction services. The portfolio serves medical facilities (hospitals, cancer centers, imaging centers), industrial applications (NDT, radio-pharmaceutical, sterilization, nuclear power, security), and research environments worldwide.

Differentiator

Problem solved

Functional benefit

Brands

• GUARDIAN: Guardian Radiation Shielded Doors - swing door, slide door, and bi-parting door systems for radiation therapy rooms
• Impervius
• Impervius Lead
• Impervius Concrete
• AlphaShield
• MegaShield

Products and services

• Guardian Radiation Shielded Doors A family of radiation shielded doors (Swing, Slide, Bi-Parting, Lead-Lined Wood, Lead-Lined Hollow Metal, and RF/MRI variants) equipped with the Einstein Door Control smart-screen interface, supporting doors up to 125,000 lbs with battery backup and infrared safety sensors; engineered for radiation therapy vaults and diagnostic imaging facilities at hospitals and cancer centers.
• Impervius Concrete Shielding — UltraShield & MegaShield Modular Blocks Pre-cast interlocking modular concrete blocks (UltraShield in five standard densities from 145-300 lbs/cu ft and MegaShield in 147-240 lbs/cu ft) used for vault construction in gamma and neutron radiation shielding applications; modular design enables disassembly and relocation and supports vault builds completed in as little as four weeks.
• Impervius RF/MRI Shielding Systems Modular RF shielding systems for MRI facilities: MRI Copper Panel System (wood-frame copper-wrapped panels with lightweight 2.4 lb/ft² ceiling panels), MRI Soldered Copper System (soldered monolithic RF membrane conforming to any room shape), MRI Galvanized Panel System (galvanized steel with EMI protection), plus magnetic shielding (M36 Silicone Steel) containing 5-gauss fields, RF/magnetic field windows, and MRI parts and components (waveguides, quench vents, power filters).
• Impervius Lead Products Specialty lead products for radiation shielding including AlphaShield Modular Lead Brick (tongue-and-groove interlocking brick in 3/4", 1", 1.5", 2" thicknesses), Lead-Lined Drywall and Plywood, Leaded Glass & Acrylic viewing windows, Lead-Lined Door and Window Frames, Lead Plate/Sheet (ASTM-spec), HDR Shielding Enclosures (84" interior, 75 sq ft footprint), and industrial lead products (ingot, casting, ballast, laminations, flashings, anodes, cathodes, extruded bar/wire/pipe) for medical, industrial, and nuclear applications.
• Other Shielding Products Specialty shielding offerings including Borated Polyethylene neutron shielding sheets (5% and 30% boron by weight for cargo screening, border protection, and nuclear submarine applications), Custom Shielded Hot Cells (cabinet-size to full units with viewing windows and protected hand access ports for radiopharmaceutical handling), and Shielded Storage Containers (custom lead-lined containers for radioactive material storage and transport with encapsulated lead and safety warning labels).
• Repair Services Emergency repairs, mechanical and control system service, and parts replacement for multi-ton shielded door systems, with physicist approval when required and priority emergency response.
• Upgrades/Modernization Services Door system upgrades including replacement of operators, hinges, motion systems, performance optimization, and safety system enhancements to extend vault life at a fraction of new construction cost.
• Maintenance Services Preventive service plans for shielded door systems covering engineering evaluations, scheduled inspections, lubrication, safety system testing, and performance optimization.
• Training Services On-site functionality training, safety training, emergency procedures training, and door safety checklists for healthcare facility staff operating shielded door systems.
• Architecture & Engineering Services Specialty architecture and engineering services including architectural design, design assist, site selection, interior design, facility master planning, MEP engineering, structural engineering, equipment planning, and physics design and testing for radiation-shielded facilities.
• Construction Services Turnkey construction services for radiation shielding projects including preconstruction planning, construction management, general contracting, and field coordination for medical and industrial projects with full design/build capability.

Quantifiable outcome

• Projects completed in over 47 countries worldwide
• +4 more outcomes

Named customers14 records

Segments8 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Eleven partnerships are on record, tiered core, minor and major.

• Oncology Systems Limited (OSL)coreChannel Partner/ Reseller/ Distributor · 6 September 2017Partnership with UK's largest independent provider of radiotherapy equipment and software to jointly pursue radiation therapy and diagnostic imaging projects in UK and Ireland. Expanded collaboration in 2026 to support radiotherapy projects across Europe. OSL provides front-end client engagement while NELCO handles shielding design, engineering, manufacturing, and project execution.
• Gamma GurusminorStrategic or Co-development Partner · 24 May 2017Collaboration on Northern Beaches Cancer Care Centre project in Sydney, Australia. Gamma Gurus provided local radiation solutions expertise while NELCO delivered shielding design and installation.
• ElektacoreTechnology or IntegrationEquipment manufacturer partnership. NELCO designs shielding compatible with Elekta linear accelerators and radiation therapy systems. Multiple projects completed with Elekta equipment including Versa HD and CyberKnife systems.
• Varian Medical SystemscoreTechnology or IntegrationEquipment manufacturer partnership. NELCO provides shielding solutions compatible with Varian radiation therapy equipment including TrueBeam and other linear accelerator systems.
• AccuraycoreTechnology or IntegrationEquipment manufacturer partnership. NELCO designed and installed vault for first CyberKnife robotic radiosurgery system in Ireland at Hermitage Medical Clinic.
• Siemens HealthineerscoreTechnology or IntegrationEquipment manufacturer partnership. NELCO designed custom hybrid RF enclosure for Siemens 3.0T MRI system at Northeastern University ISEC facility.
• Brookfield IndustriescoreTechnology or IntegrationExclusive partnership for door operators. Brookfield worked closely with NELCO to develop swing, slide, and bi-parting slide door operators specifically designed for radiation therapy applications, with over 3000 operators in use globally.
• SkanskamajorImplementation/ SI/ Consulting PartnerConstruction partner on multiple major healthcare projects including Northeastern University ISEC and UWHC RTX project. Skanska awarded NELCO position on their bid list for future projects.
• Turner ConstructionmajorImplementation/ SI/ Consulting PartnerConstruction partner on Harborview Medical Center project in Seattle, WA. NELCO completed 45' x 16' magnetic shielding installation within one-week timeframe.
• McCarthy Building CompaniesmajorImplementation/ SI/ Consulting PartnerJoint venture partner on LAC+USC Medical Center Replacement Project worth $2,871,000 with three buildings including 300+ tons of steel shielding.
• Passport Systems, Inc.minorStrategic or Co-development PartnerPartnership on cargo-scanning facility at Massachusetts Port Authority's Conley Container Terminal. NELCO served as design-builder for this first-of-its-kind facility supporting U.S. Department of Homeland Security DNDO project.

Scale indicators10 records

Recent moves6 records

Expansion highlights6 records

Regional players

• Tema Sinergie: Italian radiation shielding specialist producing shielded doors, lead-lined walls, and turnkey bunkers for medical and industrial use. Regional peer offering comparable products primarily in Italy and Southern Europe.

Direct peers

• Mavig: German manufacturer of radiation protection products including leaded glass, lead acrylic, suspended leaded glass panels, and shielding accessories for medical imaging and interventional radiology. Direct peer in lead-glass and radiation-protection accessories.
• Radiation Protection Products: US manufacturer of lead-lined drywall, lead-lined plywood, leaded glass, and accessories for medical and industrial radiation shielding. Direct peer to NELCO's Impervius Lead product line.
• Ray-Bar Engineering: US-based manufacturer of radiation shielding products including lead-lined drywall, lead-lined doors, leaded glass, and X-ray room shielding. Closely comparable to NELCO's lead products and shielded-door lines serving hospitals and imaging centers.
• Lemer Pax: French designer and manufacturer of radiation shielding products including shielded doors, hot cells, and nuclear medicine equipment. Comparable to NELCO's hot cells, shielded doors, and European nuclear-pharma customer segments.
• Wardray Premise: UK-based specialist in radiation shielding including X-ray rooms, lead-lined doors, lead glass, and MRI/RF shielding enclosures. Direct competitor in NELCO's core UK and European healthcare-shielding market.
• MarShield: Canadian manufacturer of lead shielding products, lead-lined drywall, lead bricks, and custom shielding for medical, industrial, and nuclear applications. Direct competitor in the same product categories as NELCO's AlphaShield and lead-lined product families.
• Amray Group: Radiation shielding manufacturer with operations in the UK and Ireland supplying lead products, shielded doors, and vault construction services. Comparable product breadth and geographic overlap with NELCO's UK/Ireland business.

Broad incumbents

• IBA (Ion Beam Applications): Belgian proton therapy and radiopharma equipment manufacturer. Adjacent incumbent whose proton therapy systems (e.g., ProteusONE) are the type of equipment NELCO's shielding is designed around, making it a relevant reference for proton therapy demand.
• ETS-Lindgren: US-headquartered global provider of RF/microwave shielding, MRI enclosures, acoustic chambers, and anechoic rooms. Broader incumbent with overlapping capability in NELCO's Impervius RF/MRI product family but serving a wider portfolio of test-and-measurement customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks7 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/nelco_2

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about NELCO Worldwide