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SECTION 08 88 60

X-RAY LEAD GLASS

GUIDE SPECIFICATION - 2026

** NOTE TO SPECIFIER ** This section is written in CSI three-part format for radiation shielding X-ray lead glass. Edit bracketed requirements to coordinate with Drawings, door and frame schedules, and the project radiation shielding report prepared by the qualified health or medical physicist.

This section is based on products of Lead Glass Pro, located at:

1968 South Coast Highway

Laguna Beach, CA 92651-3681

Email: sales@leadglasspro.com

Toll Free: (800) 506-9972

Web: https://www.leadglasspro.com

Lead Glass Pro manufactures radiation shielding products including leaded X-ray glass, X-ray safety glass, laminated X-ray lead glass, lead-lined window and door frames, and related radiation shielding assemblies.

PART 1 - GENERAL

1.1 SECTION INCLUDES

1. Radiation shielding X-ray lead glass for glazed openings in lead-lined partitions, doors, sidelites, borrowed lites, and view windows.
2. Radiation shielding X-ray safety glass where impact-resistant glazing is required.
3. Radiation shielding laminated X-ray lead glass where safety glazing performance is required.
4. Accessories required for a complete radiation shielding glazing installation.

1.2 RELATED SECTIONS

1. Section 08 11 13 - Hollow Metal Doors and Frames.
2. Section 08 34 40 - Radiation Protective Doors and Frames.
3. Section 08 80 00 - Glazing.
4. Section 09 21 16 - Gypsum Board Assemblies.
5. Section 09 29 60 - Lead-Lined Gypsum Board.
6. Section 13 49 00 - Radiation Protection.

1.3 REFERENCES

1. American National Standards Institute (ANSI):
   1. ANSI Z97.1 - Safety Glazing Materials Used in Buildings.
2. ASTM International (ASTM):
   1. ASTM C 1036 - Standard Specification for Flat Glass.
   2. ASTM C 1172 - Standard Specification for Laminated Architectural Flat Glass.
3. Consumer Product Safety Commission (CPSC):
   1. 16 CFR Part 1201, Category II - Safety Standard for Architectural Glazing Materials.
4. Federal Specifications:
   1. DD-G-451 - Glass, Flat and Corrugated, for Glazing, Mirrors, and Other Uses.
5. National Council on Radiation Protection and Measurements (NCRP):
   1. NCRP Report No. 147 - Structural Shielding Design for Medical X-Ray Imaging Facilities.
6. Comply with local radiation safety regulations and requirements of authorities having jurisdiction where more stringent than references listed above.

1.4 DEFINITIONS

1. Lead Equivalence: Thickness of lead that provides the same radiation attenuation as the material in question under specified conditions.
2. Radiation Shielding Report: Project-specific shielding report prepared by a qualified health or medical physicist, indicating required lead equivalence, shielding configuration, and related radiation protection requirements.

1.5 PERFORMANCE REQUIREMENTS

1. Provide X-ray lead glass with lead equivalence not less than required by the Drawings and the project radiation shielding report.
2. Lead equivalence shall be based on X-ray tube potential (kVp), workload, use factor, occupancy factor, and shielding requirements defined in the project radiation shielding report prepared in accordance with NCRP Report No. 147.
3. Provide glazing with radiation attenuation equivalent to the lead lining in the partition, wall, door, sidelite, borrowed lite, or frame assembly in which glazing is installed, unless otherwise indicated.
4. Maintain continuity of radiation protection at perimeter conditions, glazing stops, setting blocks, gaskets, shims, and adjacent lead-lined assemblies.
5. Determine final lead equivalence and shielding configuration from the project radiation shielding report prepared by the qualified health or medical physicist of record.
6. Provide annealed X-ray lead glass at non-impact locations unless otherwise required. Provide X-ray safety glass or laminated X-ray lead glass at locations subject to human impact in accordance with applicable building codes, safety glazing requirements, and locations defined by the authority having jurisdiction.

1.6 SUBMITTALS

1. Product Data: Submit manufacturer's printed technical data for X-ray lead glass, including thickness, sizes, lead equivalence, density, glass composition, installation instructions, and maintenance instructions.
2. Shop Drawings: Indicate glass sizes, locations, thicknesses, lead equivalence, frame conditions, clearances, glazing materials, and coordination with adjacent lead-lined assemblies.
3. Radiation Shielding Coordination: Submit documentation verifying that proposed glazing lead equivalence complies with the project radiation shielding report.
4. Certificates of Compliance: Submit manufacturer's certificate stating that X-ray lead glass furnished for the Project complies with this Section, the Drawings, and the project radiation shielding report.
5. Safety Glazing Certification: For X-ray safety glass and laminated X-ray lead glass, submit evidence of compliance with ANSI Z97.1 and CPSC 16 CFR Part 1201, Category II, where applicable.

1.7 QUALITY ASSURANCE

1. Manufacturer Qualifications: Manufacturer or fabricator regularly engaged in successful production of radiation shielding X-ray lead glass and related radiation shielding glazing products.
2. Installer Qualifications: Installer experienced in installation of radiation shielding glazing and acceptable to manufacturer.
3. Regulatory Requirements: Comply with applicable federal, state, and local radiation safety standards and requirements of authorities having jurisdiction.
4. Coordination: Coordinate glass type, lead equivalence, thickness, frame depth, glazing stops, and clearances before fabrication.

1.8 DELIVERY, STORAGE, AND HANDLING

1. Deliver X-ray lead glass in manufacturer's original protective packaging with labels intact and legible.
2. Handle glass carefully to prevent scratches, breakage, edge damage, and surface contamination.
3. Store glass indoors, vertically, in a clean, dry, secure location protected from construction traffic and temperature extremes.
4. Do not store outdoors. Do not store flat. Do not use knives, abrasive tools, strong cleaners, or materials that may scratch or chemically damage glass surfaces.

1.9 PROJECT CONDITIONS

1. Field Measurements: Verify actual openings and frame conditions before fabrication.
2. Environmental Conditions: Install glazing only when openings are clean, dry, square, plumb, and ready to receive glass.

PART 2 - PRODUCTS

2.1 MANUFACTURERS

1. Acceptable Manufacturer: Lead Glass Pro, 1968 South Coast Highway, Laguna Beach, CA 92651-3681; Toll Free: (800) 506-9972; Email: sales@leadglasspro.com; Web: https://www.leadglasspro.com.
2. Substitutions: Not permitted unless approved in writing by Architect, Owner, and project radiation physicist of record. Proposed substitutions must demonstrate equivalent lead equivalence, glass quality, safety glazing compliance where required, and compatibility with specified frame assemblies. Submit in accordance with Division 01 requirements.

2.2 RADIATION SHIELDING X-RAY LEAD GLASS

1. Basis of Design: Radiation Shielded X-Ray Lead Glass, as manufactured and supplied by Lead Glass Pro.
2. Description: Annealed, high-density flat glass manufactured to glazing industry standards and formulated with radiation protective oxides and heavy metal content.
3. Radiation Shielding: Provide lead equivalence as indicated on Drawings or as required by the project radiation shielding report.
4. Minimum Thickness: 5/16 inch (8 mm), or greater thickness or multiple layers as required to provide specified lead equivalence.
5. Appearance: Clear glass with yellow hue due to radiation protective oxide and heavy metal content.
6. Composition: Provide glass with minimum 60 percent total heavy metal oxide content and minimum 55 percent lead oxide content by weight.
7. Maximum Single Pane Size: 96 inches by 48 inches (2438 mm by 1219 mm), unless otherwise approved by manufacturer.
8. Identification: Clearly label or identify each piece as X-Ray Lead Glass and indicate protective lead shielding equivalency.

2.3 RADIATION SHIELDING X-RAY SAFETY GLASS

1. Basis of Design: Radiation Shielding X-Ray Safety Glass, as manufactured and supplied by Lead Glass Pro.
2. Provide X-ray safety glass at lead-lined door vision lites and at sidelites, borrowed lites, and windows where safety glazing is required by applicable codes.
3. Impact Resistance: Comply with ANSI Z97.1 and CPSC 16 CFR Part 1201, Category II.
4. Permanent Label: Permanently label impact-resistant X-ray safety glass in accordance with applicable safety glazing requirements.
5. Radiation Shielding: Provide lead equivalence as indicated on Drawings or as required by the project radiation shielding report.

2.4 RADIATION SHIELDING LAMINATED X-RAY LEAD GLASS

1. Basis of Design: Radiation Shielding Laminated X-Ray Lead Glass, as manufactured and supplied by Lead Glass Pro.
2. Construction: Lead glass laminated to clear float glass or otherwise fabricated to comply with applicable safety glazing requirements.
3. Outer Lite: X-ray lead glass, 1/4 inch (6 mm) to 3/8 inch (10 mm) thick, or thickness required for specified lead equivalence.
4. Inner Lite: 1/8 inch (3 mm) clear float glass, unless otherwise required by manufacturer or project conditions.
5. Radiation Shielding: Provide lead equivalence as indicated on Drawings or as required by the project radiation shielding report.

2.5 ACCESSORIES

1. Glazing Materials: Manufacturer-recommended setting blocks, shims, glazing tape, gaskets, stops, sealants, and related accessories compatible with X-ray lead glass and adjacent lead-lined frames.
2. Lead-Lined Frames: Where frames are included in this Section, provide lead-lined view window frames that are compatible with specified X-ray lead glass and maintain radiation shielding continuity with adjacent wall construction. Frames shall be provided by the same manufacturer as the X-ray lead glass or shall be certified by the X-ray lead glass manufacturer as compatible with the specified glazing system and required lead equivalence.

2.6 FABRICATION

1. Fabricate glass to sizes required for openings, allowing clearances recommended by manufacturer.
2. Fabricate edges and surfaces free from chips, scratches, cracks, and defects that impair appearance, performance, or installation.
3. Coordinate glass thickness and lead equivalence with frame depth, glazing stops, and adjacent lead-lined assemblies before fabrication.

PART 3 - EXECUTION

3.1 EXAMINATION

1. Examine openings, frames, substrates, and adjacent construction for conditions affecting installation or radiation shielding continuity.
2. Verify frames are clean, square, plumb, rigid, and properly lead-lined before installing X-ray lead glass.
3. Do not proceed with installation until unsatisfactory conditions have been corrected.

3.2 INSTALLATION

1. Install X-ray lead glass vertically into lead-lined frames in accordance with manufacturer's written instructions, approved shop drawings, and the project radiation shielding report.
2. Provide 1/8 inch (3 mm) maximum clearance around glass perimeter, unless otherwise recommended by manufacturer, to allow for appropriate seals, glazing tape, gaskets, and setting materials.
3. Set glass on manufacturer-recommended setting blocks and shims. Prevent direct contact between glass edges and metal frames.
4. Set stops snugly without over-tightening. Avoid pinching glass or creating unequal pressure points against surfaces and edges.
5. Maintain continuity of radiation shielding at glazing perimeters and adjacent lead-lined construction. Wrap or shield penetrations and frame conditions as required to match adjacent protection levels.
6. Do not cut, drill, grind, or alter X-ray lead glass in the field unless specifically approved in writing by manufacturer.
7. Laminated X-ray lead glass shall meet safety glazing requirements where required by applicable building codes and shall comply with ANSI Z97.1 and CPSC 16 CFR Part 1201 where designated as safety glazing.

3.3 FIELD QUALITY CONTROL

1. Manufacturer Certification: Upon completion of installation, furnish certificate of compliance stating that glazing materials are in accordance with this Section, the Drawings, and the project radiation shielding report.
2. Radiation Shielding Testing: After X-ray equipment has been installed and placed in operating condition, but before occupancy and use, Owner will engage the project health or medical physicist of record to test radiation shielding, unless otherwise indicated.
3. Correct deficiencies in radiation shielding Work identified by inspection or testing.

3.4 CLEANING

1. Clean glass immediately after installation using manufacturer's recommended cleaning materials and methods.
2. Do not use knives, scrapers, abrasive pads, strong cleaners, or cleaning materials that may scratch or damage X-ray lead glass surfaces.
3. Remove excess glazing materials and leave exposed surfaces clean.

3.5 PROTECTION

1. Protect installed X-ray lead glass from damage by construction operations until Substantial Completion.
2. Replace scratched, broken, cracked, chipped, or otherwise damaged glass.

END OF SECTION