RAY-BAR Lead Lined Hollow Metal Door Specifications
Section 08100 Metal Doors

PART 1 - GENERAL

A.    Doors shall be made of commercial quality, level, hot dipped galvanized steel conforming to ASTM# A527 and door face sheet thickness of 18, 13 or 14 gauge, with no visible seams on faces and edges. Sheet lead meeting Federal Specification QQ-L-201f, Grade C.

B.    All doors will be 1-3/4" thickness, strong, rigid, neat in appearance, and free from warpage. Edge bends will be true and straight and of minimum radius for the gauge of metal used.

1.01 PRODUCT HANDLING

A.    Follow special storage and handling requirements of the manufacturer.

PART 2 - PRODUCTS

2.01 ACCEPTABLE MANUFACTURERS

Ray-Bar Engineering Corporation, 697 W. Foothill Blvd, PO Box 415, Azusa California 91702-0415, Phone (626) 969-1818, Fax (626) 969-6510.

2.02 MATERIALS

A. Faces:    18 gauge Hot Dipped Galvanized Steel (HDGS). Prime quality, conforming to ASTM A527.

B. Edges:    16 gauge Hot Dipped Galvanized Steel (HDGS) channel. Prime quality conforming to ASTM A527.

C. Core:    99.9% Pure lead sheet per Federal Specification QQ-L-201f, Grade C. Reference radiation shielding report for thickness of lead.

D. Finish: Galvanized pre-treatment and manufacturer's standard rust inhibitive primer.

2.03 FABRICATION

A.    The vertical edges shall be reinforced by 16 gauge minimum continuous steel channel extending full height of the door. The top and bottom edges will be reinforced with 16 gauge channels spotwelded to the face sheets.

B.    Internal construction for the door consists of 1/2" cell honeycomb core with single layer unpierced sheet lead bonded to the door skins (lead sheet thickness as indicated on the Lead Protection Schedule). Apply lead sheet continuously from top to bottom and edge to edge.

C.    All doors shall be mortised and reinforced to allow field application of hinges and locksets in accordance with an appropriate hardware schedule and templates supplied by the hardware contractor.

MINIMUM HARDWARE REINFORCEMENTS:

Hinge Reinforcement                        7 gauge
Lock Reinforcement                        12 gauge
Closer Reinforcement                      14 gauge
Other Surface Mounted Hardware    16 gauge
Lock Support                                20 gauge

D.    Fabricate metal work to required profiles for forming and welding exposed edges straight and sharp or radiused.

E.    Welding in accordance with AWS Standards. Grind all exposed welds smooth.

E.    All lead lined steel doors are to be thoroughly cleaned and phosphatized to inhibit corrosion; doors to receive one coat of primer.

PART 3 - QUALITY ASSURANCE

A. Comply with requirements of National Council on Radiation Protection and Measurement (NCRP) Report No. 49 "Structural Shielding Design and Evaluation for Medical Use of X-Rays and Gamma Rays of Energies up to 10MeV" and NCRP Report No. 51

1.    Comply with requirements of local, regulatory agencies where standards and criteria exceed NCRP Report No. 49

B.    Fabricator Qualifications: Fabricator shall be experienced in and equipped for work of fabrication equal to standards specified. The contractor shall furnish evidence of Fabricator having not less than ten (10) years experience in successful fabrication of radiation protection similar to work specified herein.

1.    Fabricator shall furnish proof of insurance certifying Fabricator is specifically insured in the fabrication of X-Ray Protection / Radiation Shielding Materials.

Single Source Responsibility: Provide X-Ray Protection Materials and accessories produced as standard products of Ray-Bar Engineering Corporation, 697 W Foothill Blvd, Azusa CA 91702-0415 Phone (626) 969-1818, a manufacturer regularly engaged in the production of X-Ray Shielding Materials.

PART 4 - EXECUTION

4.01 INSTALLATION

A. Installation shall be by the -contractor per manufacturer's recommendations and instructions.

4.02 CERTIFICATION

Upon completion of material, manufacturer shall supply a certificate of compliance stating that all materials are in accordance with this specification.

END OF SECTION

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