SECTION 13095

XRAY RADIATION PROTECTION

PART 1 GENERAL

SECTION INCLUDES

Sheet lead applied to [gypsum board.] [plywood.] [________.]

****** [OR] ******

Sheet lead placed between two masonry wythes.

Lead lined [doors] [and door louvers] [________].

****** [OR] ******

Lead lining to [door] [and] [glazed] frames.

Leaded glass.

[Film transfer cabinets] [View window frames] [Wall louvers] [Control screens] [and] [________].

PRODUCTS FURNISHED BUT NOT INSTALLED UNDER THIS SECTION

Section [______-____________]: Placement of lead sheet into [wood doors] [metal frames] [and] [________].

Section [______-____________]: Placement of leaded glass into [wood doors] [[________] partitions] [________].

Section [______-____________]: Placement of lead sheet into [gypsum board] [________] partitions.

Section [______-____________]: Placement of lead sheet into ductwork.

PRODUCTS INSTALLED BUT NOT FURNISHED UNDER THIS SECTION

Section [______-____________]: Supply of partially fabricated wood door subassemblies for placement by this section.

Section [08111 - Standard Steel Doors and Frames] [______-____________]: Supply of prepared metal [door] [and] [glazed] frames for installation of lead lining by this section.

RELATED SECTIONS

Section [______-____________]:	Depressed floor slab for lead sheeting under slab.

Section [______-____________]: [Concrete] [terrazzo]

[________] floor topping over lead sheeting.

Section [______-____________]: Wall substrate construction.

Section [______-____________]: Wood furring to attach lead [and lead laminated gypsum lath].

[Section 08211- Wood Doors: [Door] [and] [Glazed] openings.]

Section 08112 - Standard Steel Frames.

Section 08115 - Custom Steel Frames.

Section 08712 - Door Hardware.

[Section 08800 - Glazing: Glazing leaded glass.]

Section 09210 - Gypsum Plaster: Plaster finish over lead lined gypsum lath.

Section 09215 - Veneer Plaster: Veneer plaster finish over lead lined gypsum board.

Section 09260 - Gypsum Board Systems: Joint taping over lead lined gypsum board.

Section [______-____________]: Suspended ceiling system to support [lead sheet.] [lead laminated gypsum lath.]

Section 09900 - Painting: Field painting.

Section [______-____________]:	Lead protected equipment.

Section [______-____________]: Radiation emitting equipment.

Section 15890 - Ductwork.

Section [______-____________]: Light fixtures with associated components and wire with radiation protection.

REFERENCES

ASTM B749 - Lead and Lead Alloy Strip, Sheet, and Plate Products.

ASTM C36 - Gypsum Wallboard.

ASTM C37 - Gypsum Lath.

ASTM C1036 - Flat Glass.

ASTM C1048 - Heat-Treated Flat Glass - Kind HS, Kind FT Coated and Uncoated Glass.

NBS - National Council on Radiation Protection and Measurement (NCRP Report #49 - Diagnostic) "Structural Shielding Design and Evaluation for Medical Uses of Xrays and Gamma Rays of Energies up to 10 MeV".

PS 1 - Construction and Industrial Plywood.

SYSTEM DESCRIPTION

[Radiation Protection: Contain, without leakage, emitted radiation of [____] RAD units, measured at [wall] [________] surface with [________] measuring device simulating the emitting equipment.]

Protection: Walls, [fixed control screens] [partial height room divider] [ceiling] [floor], including wall interruptions for [doors,] [glazing,] [louvers,] [thresholds,] [and] [________].

SUBMITTALS

Submit under provisions of Section [01300.] [________.]

Shop Drawings: Indicate layout, details, dimensions, interface with adjoining work, and [________].

Product Data: Provide data on leaded [glass] [plastic], [transfer cabinets,] [louvers,] [and] [________].

Manufacturer's Certificate: Certify that leaded glazing capabilities [________] meet or exceed [specified requirements] [________].

QUALITY ASSURANCE

Perform Work in accordance with NBS (NCRP Report) requirements and [________] regulations.

Maintain [one copy] [[____] copies] of [each] document on site.

QUALIFICATIONS

Manufacturer: Company specializing in manufacturing the Products specified in this section with minimum [three] [_______] years [documented] experience.

Installer: Company specializing in performing the work of this section [with minimum [__________] years [documented] experience] [approved by manufacturer].

REGULATORY REQUIREMENTS

Conform to [applicable health and occupation] [________] code for integrity of radiation protection and continuity of protected construction.

MOCKUP

Provide mockup of wall [and glazed] area under provisions of Section [01400.] [________.]

Mockup to contain [____] sq ft ([____] sq m) of wall area [including leaded glass and frame] [and] [________].

The mockup shall be used for testing purposes to verify the protection integrity of the work of this section.

Mockup may [not] remain as part of the Work.

PRE-INSTALLATION CONFERENCE

Convene [one] [_____] week prior to commencing work of this section, under provisions of Section [01039.] [________.]

COORDINATION

Coordinate work under provisions of Section [01039.] [________.]

Coordinate the work with construction of partitions, placement of frames and [________].

PART 2 PRODUCTS

ACCEPTABLE MANUFACTURERS - SHEET LEAD MATERIAL

[__________________________________] Product [_________].

[__________________________________] Product [_________].

[__________________________________] Product [_________].

Substitutions: Under provisions of Section [01600.] [________.]

SHEET LEAD AND ASSOCIATED MATERIALS

Sheet Lead: ASTM B749, Type [________], [[____] inch ([____] mm) thick.] [[____] lbs/sq ft ([____] Kg/sq m).]

Gypsum Board: ASTM C36, paper/paper faced, [square] [tapered] edges and square ends; [48 x 96] [16 x 48] [____x____] inch ([1 200 x 2 400] [400 x 1 200] [____x____] mm) size, [1/2] [5/8] inch ([13] [16] mm) thick.

Gypsum Lath:	ASTM C37, paper/paper faced, square edges and ends; 16 x 48 inch (400 x 1 200 mm] size, [4/8] [1/2] inch ([9] [13] mm) thick.

Plywood:	APA [Rated Sheathing] [Structural [I] [II]], Span Rating [____]; Exposure Durability [1] [2]; sanded.

Nails: Lead headed to [twice] [____] thickness of sheet lead.

Tie Wire: Leaded steel, annealed.

FABRICATION

Laminated Panels: Fabricate with monolithic sheet lead [bonded between two sheets of] [bonded to] plywood; extend lead sheet [1] [____] inch ([25] [____] mm) beyond [one side and one end of] panel perimeter.

Lead Laminated Gypsum Board:	Fabricate with monolithic sheet lead bonded to one surface of board, extend lead sheet [1] [____] inch ([25] [____] mm) beyond one side and one end of board.

****** [OR] ******

Lead Laminated Gypsum Lath: Fabricate with monolithic sheet lead bonded to one surface of lath, extend lead sheet [1] [____] inch ([25] [____] mm) beyond one side and one end of lath.

Lead Lined Doors: Fabricate with monolithic sheet lead bonded between two solid core wood leaves [provided by Section [________]] to form rigid door leaf, [1-3/4] [____] inch ([45] [____] mm) finished door thickness. Trim lead, flush with door leaf edges.

****** [OR] ******

Lead Lined Doors: Fabricate with monolithic sheet lead bonded to one face of solid wood door core, [provided by Section [________]] to form rigid door leaf. Bond plastic laminate veneer of [____] inch ([____] mm) thickness over lead sheet face. Fabricated door finished thickness of [1-3/4] [____] inch ([45] [____] mm). Trim lead and plastic laminate, flush with door leaf edges.

Lead Lined [Door] [and] [Glazed] Frames:	Fabricate with sheet lead formed to line frame [provided by Section [________]]; fit tight to internal frame profile, lap seams [2] [____] inches ([50] [____] mm) minimum. Provide double thickness lead over hardware reinforcement plates to afford protection from protruding screw fasteners.

Hardware: [As specified in Section 08712.] [[Cast steel] [________] type, [____x____] inch ([____x____] mm) size, [ball bearing] [________] hinge, and [________].]

Threshold: Formed lead, [channel shape,] to recieve grout fill, [____] inch ([____] mm) wide x width of [door] [wall] opening [plus [4] [____] inches ([100] [____] mm) to fit under frame section].

ACCEPTABLE MANUFACTURERS - COMPONENTS AND ACCESSORIES

[__________________________________] Product [_________].

[__________________________________] Product [_________].

[__________________________________] Product [_________].

Substitutions: Under provisions of Section [01600.] [________.]

COMPONENTS AND ACCESSORIES

Leaded Glass: [ASTM C1036] [ASTM C1048], clear, lead content equivalent to protection requirements of [this section] [adjacent lead sheet protection]; [________] manufactured by [____________].

Lead Louvers: Formed from sheet lead bonded to and stiffened with [sheet steel] [________], light proof profile of [inverted 'Y'] [interlocking maze] [________] design, channel shaped frame with detachable leg, lead protected fasteners, [30] [____] percent free area; [________] manufactured by [____________].

Film Transfer Cabinets: Provide with leaded flanges to permit lapping to adjacent construction; [________] manufactured by [____________].

View Window Frames [and Leaded Glass]: [________] manufactured by [____________].

Control Windows:	Prefabricated lead frame, [__ x __] inch ([__ x __] mm) size, thickness to suit wall; [integral speech louver with light proof baffling,] included with lead glass glazing strips, anchors and fasteners.

Air Outlets and Inlets: [________] manufactured by [____________].

Window Glazing Screws: Leaded lined, [____x____] inches ([____x____] mm) size; [________] manufactured by [____________].

Radiation Protection Plaque:	Wall mounted, designating lead thickness in wall, degree of continuity, exceptions.

FINISHES

Wood Veneered Doors:	[As specified in Section 09900.] [To [________] stain and varnish [as selected].]

Plastic Laminated doors: [________] color [as selected].

Primed metal surfaces: [As specified in Section 09900.] [To [________] color [as selected].]

Prefinished Surfaces: [________] color [as selected].

PART 3 EXECUTION

EXAMINATION

Verify site conditions under provisions of Section [01039.] [________.]

Verify that [existing surfaces] [substrate construction] [recessed floor areas] are ready to receive work and opening dimensions are as [indicated on shop drawings.] [instructed by the manufacturer.]

INSTALLATION - SHEET LEAD

Install [lead sheets] [lead laminated [board] [lath]] to wall substrate by mechanical attachments; [lead headed fasteners spaced at [4] [____] inches ([100] [____] mm)] [wire tied] to framing members. [Install lead laminated products with lead face [against supports.] [facing out.]

Install lead sheets, wire loop tied to one masonry wythe, at one tie for every [1] [____] sq ft ([0.1] [____] sq m) of lead sheet. Cover wire tie penetrations with lead patches. Coordinate work with erection of both masonry wythes.

Lap edges and ends of lead sheets [[1] [____] inch ([25] [____] mm)]. [Apply lead patches, same thickness as lead sheet, over penetrations, to achieve continuity of protection.]

Extend lead protection from [finished floor] [________] to [a height of [____] inches ([____] mm)] [to finished ceiling.] [to underside of structure.] [Install gypsum board from top of lead laminated lath to [underside of structure] [finished ceiling] in accordance with [Section [09260] [________].] [________.]

Construct control screens [as indicated.] [________.]

Floor Protection: [________________].

Ceiling Protection: [________________].

Ductwork Protection: [________________].

Conduit and Outlet Box Protection:	[________________].

Apply lead sheet patches around penetrations to sheet lead protection, extending [6] [____] inches ([150] [____] mm) beyond penetration.

INSTALLATION - COMPONENTS AND ACCESSORIES

Install components and accessories in accordance with manufacturer's instructions.

Install lead lined [glazed] frames in accordance with Section [08112,] [08115,] [and] [lead lining fabricator instructions].

Install lead lined doors in accordance with Section [08211] [________]. Coordinate installation of door hardware.

Install lead lined panels [as indicated.] [________.]

Install leaded glass in prepared frames in accordance with "wet method" described in Section [08800.] [________.]

Install louvers in [doors] [partitions] [and] [________]. Coordinate lead lap with adjacent construction for continuing protection.

Install [film transfer cabinets] [view window frames] [control screens] [control windows] [and] [________].

FIELD QUALITY CONTROL

Field [inspection and] testing will be performed under provisions of Section [01400.] [________.]

Inspection and testing will be performed by a licensed [radiologist technician] [________] in coordination with regulatory agency requirements, to ascertain conformance of installation regarding radiation passage or leakage.

Cooperate and offer assistance in such work.	Execute instructions given.

SCHEDULE

Diagnostic #337:	West wall, 1/16 inch lead from floor to 96 inches above floor.

Therapy #385: All walls and doors, 3/32 inch lead from floor to 12 inches above ceiling; same protection in view windows and partial height partition.

END OF SECTION