S02. Addendum 6 - VARRCS Bid Addendum No 6 2021 05-07.pdf

Addendum No. Bid Addendum 06

Date May 7, 2021

Project Name VA Renovate and Reconfigure Clinical Services

Project Number 19-116

Project Location 10701 East Blvd. Cleveland, OH. 44106

Documents Bid Issue, 4/9/21

This Addendum hereby modifies, supplements, and amends the Contract Documents, as prepared by Perspectus Architecture. Wherein this Addendum varies or is in conflict with the Contract Documents, the requirements of this Addendum shall govern. In all other particulars, the requirements of the original Specifications and Contract Documents, including any previous Addenda, shall govern.

This addendum is comprised of the following items:

SPECIFICATIONS

No. Item 1 SECTION 10 51 23 PLASTIC-LAMINATE-CLAD LOCKERS added for lockers at CWT Waiting 1B504 and

Blood Bank Alcove 1B463.

2 SECTION 13 95 00- RADIO FREQUENCY AND MAGNETIC SHIELDING revised to the following:

2.2 MANUFACTURER’S MATERIALS

A. Shielding Material: Flectron Product No. 3027-235 from Laird Technologies Inc., Chesterfield, MO.

[End of Addendum]

Louis Stokes Cleveland VAMC 05-01-18

Renovate and Reconfigure Clinical Services

Project No. 541-20-101

Plastic-Laminate-Clad Lockers

10 51 23 - 1

SECTION 10 51 23

PLASTIC-LAMINATE-CLAD LOCKERS

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes plastic-laminate-clad wood lockers.

B. Color, Pattern Locations, and Texture: Finish, color, and product iden-tifications are indicated on the Room Finish Schedule and legends on

Drawing I-600.

1. The specified “Basis of Design” product has been provided by the

Construction Department’s Interior Design Team of the Louis Stokes

Cleveland Veterans Administration Medical Center, Cleveland, Ohio.

Other products submitted for equivalency as a substitution by the

Bidder must be received ten (10) days prior to Bid Receipt.

1.2 ACTION SUBMITTALS

A. Product Data: For each type of product.

1. Include construction details, material descriptions, dimensions of individual components and profiles, and finishes for each type of locker.

B. Sustainable Construction Submittals:

1. Recycled Content: Identify post-consumer and pre-consumer recycled content percentage by weight.

2. Low Pollutant-Emitting Materials:

a. Show volatile organic compound types and quantities.

C. Shop Drawings: For plastic-laminate-clad wood lockers.

1. Include plans, elevations, sections, and attachment details.

2. Show details.

3. Show locations and sizes of furring, blocking, and hanging strips, including concealed blocking and reinforcement specified in other

Sections.

4. Show locker trim, base, sloping tops, and accessories.

5. Show locker identification system and numbering sequence.

D. Samples for Verification: For the following products:

1. Plastic-laminate-clad panels, not less than 8 by 10 inches, for each type, color, pattern, and surface finish, with separate sam-ples of un-faced panel product used for core].

2. Corner pieces of locker front frame joints between stiles and rail, as well as exposed end pieces, not less than 18 inches wide by 18 inches high by 6 inches deep.

10 51 23 - 2

3. Exposed cabinet hardware and accessories, one unit for each type and finish.

1.2 INFORMATIONAL SUBMITTALS

A. Qualification Data: For Installer.

B. Sample Warranty: For special warranty.

1.3 CLOSEOUT SUBMITTALS

A. Maintenance Data: For adjusting, repairing, and replacing locker doors and latching mechanisms to include in maintenance manuals.

1.4 MAINTENANCE MATERIAL SUBMITTALS

A. Furnish extra materials that match products installed and that are packaged with protective covering for storage and identified with la-bels describing contents.

1. Locker doors, complete with specified door hardware. Furnish no fewer than two (2) doors of each type and color installed.

2. Units of the following locker hardware items and no fewer than two (2) units:

a. Hinges.

b. Pulls.

c. Blank identification plates.

d. Hooks.

1.5 DELIVERY, STORAGE, AND HANDLING

A. Do not deliver lockers until painting and similar operations that could damage lockers have been completed in installation areas.

1.6 FIELD CONDITIONS

A. Environmental Limitations: Do not deliver or install lockers until building is enclosed, wet-work is complete, and HVAC system is operat-ing and maintaining temperature between 60 and 90 deg F and relative humidity between.

B. Field Measurements: Where lockers are indicated to fit to other con-struction, verify dimensions of other construction by field measure-ments before fabrication, and indicate measurements on Shop Drawings.

1. Locate concealed framing, blocking, and reinforcements that sup-port lockers by field measurements before being enclosed, and in-dicate measurements on Shop Drawings.

C. Established Dimensions: Where lockers are indicated to fit to other construction, establish dimensions for areas where lockers are to fit.

Provide allowance for trimming at site, and coordinate construction to

10 51 23 - 3 ensure that actual dimensions correspond to established dimensions.

1.7 COORDINATION

A. Coordinate sizes and locations of concealed wood support bases.

1. Requirements are specified in Section 06 10 00 "Rough Carpentry.

B. Coordinate sizes and locations of framing, blocking, furring, rein-forcements, and other related units of work specified in other Sec-tions to ensure that lockers can be supported and installed as indi-cated.

C. Hardware Coordination: Distribute copies of approved hardware schedule specified in Section 087100 "Door Hardware" to fabricator of lockers;

coordinate Shop Drawings and fabrication with hardware requirements.

1.8 WARRANTY

A. Special Warranty: Manufacturer agrees to repair or replace components of lockers that fail in materials or workmanship within specified war-ranty period.

1. Failures include, but are not limited to, the following:

a. Structural failures.

b. Faulty operation of locks or hardware.

c. Deterioration of wood, finishes, and other materials beyond normal use.

2. Warranty Period: Three (3) years from date of Substantial Comple-tion.

PART 2 - PRODUCTS

2.1 PERFORMANCE REQUIREMENTS

A. Accessibility Standard: For lockers indicated to be accessible, comply with applicable provisions in the ABA standards of the Federal agency having jurisdiction and ICC A117.1.

2.2 PLASTIC-LAMINATE-CLAD WOOD LOCKERS

A. Construction Style: Manufacturer's standard] Flush overlay.

B. Final Assembly: Manufacturer's standard factory assembly.

C. Locker Body: Fabricated from fire-retardant-particleboard overlay.

1. Side Panels: Manufacturer's standard 3/4 or 5/8 inch thick.

2. Back Panel: Manufacturer's standard 1/2 or 3/8 inch thick.

3. Top Panel: Manufacturer's standard 3/4 or 5/8 inch thick.

4. Bottom Panel: Manufacturer's standard 3/4 or 5/8 inch thick.

5. Exposed Panel Edges: [Thermoset decorative overlay to match pan-el, 3-mm-thick PVC, Vinyl T-molding, or High-pressure decorative

10 51 23 - 4 laminate, Grade VGS, to match panels.

D. Filler Panels: 3/4-inch-thick panels. Match style, material, construc-tion, and finish of plastic-laminate-clad wood doors.

E. Continuous Finish Base: Plastic-laminate-clad, 3/4-inch-thick panel that matches door faces; fabricated in lengths as long as practical to enclose base and base ends of lockers.

F. Plastic-Laminate Colors, Patterns, and Finishes:

1. As indicated by manufacturer's designations.

2.3 MATERIALS

A. Composite Wood: Provide materials that comply with requirements of referenced quality standard for each type of woodwork and quality grade specified unless otherwise indicated.

1. Medium-Density Fiberboard: ANSI A208.2, Grade 130.

2. Particleboard: ANSI A208.1, Grade M-2-Exterior Glue.

B. High-Pressure Decorative Laminate: NEMA LD 3, grades as follows:

1. Horizontal Surfaces: Grade HGL.

2. Post-formed Surfaces: Grade HGP.

3. Vertical Surfaces: Grade VGS.

C. Fire-Retardant-Treated Materials: Where fire-retardant-treated materi-als are indicated, use materials impregnated with fire-retardant chem-ical formulations indicated by a pressure process or other means ac-ceptable to authorities having jurisdiction to produce products with fire-test-response characteristics specified.

1. Do not use material that is warped, discolored, or otherwise de-fective.

2. Use fire-retardant-treatment formulations that do not bleed through or otherwise adversely affect finishes. Do not use color-ants in solution to distinguish treated material from untreated material.

3. Fire-Retardant Particleboard: Panels made from softwood particles and fire-retardant chemicals mixed together at time of panel man-ufacture to achieve flame-spread index of 25 or less and smoke-developed index of 25 or less according to ASTM E 84:

a. Panels 3/4 Inch Thick and Less: ANSI A208.1, Grade M-2, ex-cept for the following minimum properties: density, 45 lb/cu.

ft. modulus of rupture, 1600 psi; modulus of elasticity, 300,000 psi internal bond, 80 psi and screw-holding capacity

10 51 23 - 5 on face and edge, 250 and 225 lbf, respectively.

4. Fire-Retardant Fiberboard: Medium-density panels according to

ANSI A208.2, made from softwood fibers, synthetic resins, and fire-retardant chemicals mixed together at time of panel manufac-ture to achieve flame-spread index of 25 or less and smoke-developed index of 200 or less according to ASTM E 84.

D. Furring, Blocking, Shims, and Hanging Strips: hardwood lumber kiln dried to less than 15 percent moisture content.

E. Anchors: Material, type, size, and finish as required for each sub-strate for secure anchorage. Provide metal expansion sleeves or expan-sion bolts for post-installed anchors. Use nonferrous-metal or hot-dip galvanized anchors and inserts at inside face of exterior walls and at floors.

F. Wood Support Base: 2-by-4-inch nominal-size lumber treated with manu-facturer's standard preservative-treatment, process.

2.4 HARDWARE

A. Cylinder Lock: Built-in, flush cam, standard cylinder key lock, Type

B, manual deadbolt lock with five-pin tumbler keyway, keyed separately and master keyed. Furnish two change keys for each lock and two master keys.

1. Key Type: Flat, with minimum 2-by-2.68-inch key head for accessible lockers.

2. Bolt Operation: Manually locking deadbolt.

B. Butt Hinges: 2-3/4-inch five-knuckle steel hinges; back mounted.

1. Provide three hinges for doors.

C. Accessible Handle: Metal, fixed, graspable lever handle and rose trim;

surface mounted.

D. Hooks: Manufacturer's standard, ball-pointed finished to match other locker hardware. Attach hooks with at least two fasteners.

1. Provide one double-prong ceiling hook and two single-prong wall hooks for each compartment of single-tier lockers.

E. Exposed Hardware Finish: Satin chrome.

2.5 ACCESSORIES

A. Number Identification Plates: 1-1/2-inch-diameter, etched, embossed, or stamped, stainless-steel with black numbers and letters at least

1/2 inch high. Identify lockers in sequence from left to right.

2.6 FABRICATION

10 51 23 - 6

A. Fabricate each locker with shelves, an individual door and frame, an individual top, a bottom, and a back, and with common intermediate up-rights separating compartments.

1. Fabricate lockers to dimensions, profiles, and details indicated.

2. Ease edges of corners of solid-wood members to 1/16-inch radius.

B. Fabricate lockers square, rigid, without warp, and with finished faces flat and free of dents, scratches, and chips. Accurately factory ma-chine components for attachments. Make joints tight and true.

1. Fabricate lockers using manufacturer's standard construction, with joints made with dowels, dados, or rabbets. Dado side panels to receive shelving except where indicated to be adjustable.

2. Fabricate lockers with joints that are dadoed or rabbeted, glued full length, and stapled. Dado side panels to receive shelving except where indicated to be adjustable.

C. Accessible Lockers: Fabricate as follows:

1. Locate bottom shelf no lower than 15 inches above the floor.

2. Where hooks, coat rods, or additional shelves are provided, lo-cate no higher than 48 inches above the floor.

D. Venting: Fabricate lockers with space between doors and locker assem-bly of not less than 3/4 inch, with painted metal security screen at-tached to each shelf between doors] <Insert dimension>.

E. Number Identification Plates: Inlay number plates flush in each locker door, near top, centered.

F. Complete fabrication, including assembly, finishing, and hardware ap-plication, to maximum extent possible, before shipment to Project site. Disassemble components only as necessary for shipment and in-stallation. Where necessary for fitting at site, provide ample allow-ance for scribing, trimming, and fitting.

1. Trial fit assemblies at fabrication shop that cannot be shipped completely assembled. Install dowels, screws, bolted connectors, and other fastening devices that can be removed after trial fit-ting. Verify that the parts fit as intended, and check measure-ments of assemblies against field measurements indicated on Shop

Drawings before disassembling for shipment.

2. Use only manufacturer's nuts, bolts, screws, and other devices for assembly.

G. Shop cut openings, to maximum extent possible, to receive hardware, 10 51 23 - 7 electrical work, and similar items. Locate openings accurately and use templates or roughing-in diagrams to produce accurately sized and shaped openings. Sand edges of cutouts to remove splinters and burrs.

H. Attach PVC edging to panels by thermally fusing edging to panels after panel fabrication.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine walls and floors or support bases, with Installer present, for compliance with requirements for installation tolerances and other conditions affecting performance of the Work.

B. Verify that furring is attached to concrete and masonry walls that are to receive lockers.

C. Proceed with installation only after unsatisfactory conditions have been corrected.

3.2 PREPARATION

A. Condition lockers to average prevailing humidity conditions in instal-lation areas before installation.

B. Before installing lockers, examine factory-fabricated work for com-pleteness and complete work as required, including removal of packing.

3.3 INSTALLATION

A. Install wood support base with 1/2-inch-thick, plywood top.

B. Install lockers level, plumb, and true; use concealed shims.

C. Connect groups of lockers together with manufacturer's standard fas-teners, through predrilled holes, with no exposed fasteners on face frames. Fit lockers accurately together to form flush, tight, hairline joints.

D. Install lockers without distortion so doors and drawers fit openings properly and are accurately aligned. Adjust hardware to center doors and drawers in openings, providing unencumbered operation. Complete installation of hardware and accessory items as indicated.

1. Installation Tolerance: No more than 1/8 inch in 96-inch sag, bow, or other variation from a straight line. Shim as required with concealed shims.

E. Locker Anchorage: Fasten lockers through wood locker base, at ends, and not more than 36 inches o.c. with [No. 8 flush-head] [No. 8 brass-finished, flush-head] <Insert requirement> wood screws sized for 1-inch penetration into wood base.

10 51 23 - 8

F. Locker Anchorage: Fasten lockers through back, near top and bottom, at ends with No. 8 pan- or bugle-head wood screws sized for 1-inch pene-tration into wood framing, blocking, or furring] [No. 8 pan-head sheet metal screws through metal backing or metal framing behind wall finish and spaced not more than 16 inches o.c.

G. Scribe and cut corner and filler panels to fit adjoining work using fasteners concealed where practical. Repair damaged finish at cuts.

H. Attach sloping-top units to lockers, with end panels covering exposed ends.

I. Install number identification plates after lockers are in place.

1. Attach number identification plate on each locker door, near top, centered, with at least two screws with finish matching the plate.

3.4 ADJUSTING

A. Clean, lubricate, and adjust hardware. Adjust doors to operate easily without binding.

3.5 PROTECTION

A. Protect lockers from damage, abuse, dust, dirt, stain, or paint. Do not permit use during construction.

B. Touch up marred finishes, or replace lockers that cannot be restored to factory-finished appearance. Use only materials and procedures rec-ommended or furnished by locker manufacturer.

---END ---

Louis Stokes Cleveland VA Medical Center

Radio Frequency and Magnetic Shielding

13 95 00 - 1

SECTION 13 95 00

RADIO FREQUENCY AND MAGNETIC SHIELDING

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Provide a pre-engineered radio frequency and magnetic shielded system including, all engineering design, documentation, labor, supervision, equipment, materials, transportation, and tooling necessary to fabricate, install, test, certify, and warrant a radio frequency (RF) and magnetic shielding system for use with

EEG Equipment in Room EEG Clinic-1B503C.

2. Site Conditions: RF/MAGNETIC Shielding Bidder/Contractor must confirm that they have visited the site and observed and understands all building conditions and construction under which the Work of this Section must be performed.

3. Design, provide, and test a radio frequency and/or magnetic shielded enclosure.

4. Coordinate the design of the shielded enclosure with current

Architectural and MEPT Drawings and the manufacturer’s drawings when appropriate. Conflicts between the Documents are to be resolved by the COR.

1.2 RELATED REQUIREMENTS

A. Wood framing and furring: Section 06 10 00, - ROUGH CARPENTRY.

B. Field painting: Section 09 91 00 - PAINTING.

C. Division 23 Sections for connections of ductwork to or from the installed wave guide shielded air vents.

D. Division 22 Sections for pipe connections to or from the installed wave guide beyond cutoff pipe penetrations.

E. Division 21, 22, & 23 Sections for dielectric connection to exterior side of each mechanical pipe penetration of a suitable material to maintain a minimum of 1000 ohms DC resistance to earth ground, constructed of material suitable to conditions of service on which it is installed.

F. Division 21 and 26 Sections for special filtering, other than that specified in this Section, either mechanical or electrical, related specifically to the Installation of the EEG imaging system.

13 95 00 - 2

G. Division 26, 27, & 28 Sections for electrical connections to the installed RF/MAGNETIC power and/or signal filters, either internally or externally to the enclosure.

1.3 RELATED SECTIONS TO BE COORDINATED AND PROVIDED BY OTHER TRADES

B. Division 3: Concrete slab substrate, level within 1/4 inch in any 10 foot section, cured for minimum seven (7) days prior to start of enclosure installation. Maximum allowable water vapor transmission through the substrate determined to receive epoxy coatings is 3 lbs.

per ASTM F-1869.

C. Division 5: Structural steel. Provide all structural steel supports for the attachment of the specified MR shielding systems.

D. Division 7: Properly weatherproof entire area in which shielded enclosure will be installed. Protect room from moisture, standing water, and running water prior to, during, and following enclosure installation to ensure enclosure integrity and specified earth ground isolation.

E. Section 09 51 00 – Aluminum lay-in ceiling grid

F. Section 09 91 00 – Painting: Field painting or other architectural finishes, either internal or external to enclosure.

G. Division 9: Finish Work enveloping shielded system or preparing surfaces to receive shielded system.

H. Division 05: Metal fabrications for RF shield ceiling supports placed on minimum 3'-0" centers, in plane, and secured directly to the Building’s structure a minimum of 6” above the exterior roof of the shielded enclosure.

I. Division 23: Connections of ductwork to or from the installed wave-guide shielded air vents.

J. Divisions 21, 22, and 23: Dielectric connection to the exterior side of each mechanical pipe penetration of a suitable material to maintain a minimum of 1,000 ohms DC resistance to earth ground, construct of material suitable to conditions of service on which it is installed.

K. Division 22: Pipe connections to or from the installed wave guide beyond cutoff pipe penetration.

L. Divisions 21 through 28: Special filtering, other than that specified within this Section, either mechanical or electrical, related specifically to the installation of the EEG system.

M. Divisions 26, 27 and 28: Electrical connection to the installed RF power and/or signal filters, either internally or externally to the enclosure.

13 95 00 - 3

1.4 APPLICABLE PUBLICATIONS

A. Comply with references to extent specified in this section.

B. Standards:

1. IEEE-299 - (as modified for MRI testing) Methods of Attenuation

Measurements for Electromagnetic Shielding Enclosures for

Electrical Test Purposes.

2 MIL-STD-220-A - Methods of Insertion Loss Measurements for Radio

Frequency Power Line Filters.

3 ASTM Standards: E84-01 – surface burning characteristics

4 ASTM F-1869

5 ASTM E90/E413 – acoustic performance

C. ASTM International (ASTM):

1. A240 - Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications.

1.4 PRE-INSTALLATION MEETINGS

A. Conduct pre-installation meeting a minimum thirty (30) days before beginning Work of this Section.

1. Required Participants:

a. Contracting Officer's Representative (COR).

b. Architect/Engineer.

c. EEG Equipment Provider’s Representative.

d. Inspection and Testing Agency.

e. Contractor.

f. Shielding Systems Provider/Installer.

g. Other installers responsible for adjacent and intersecting work.

1.5 SUBMITTALS

A. Submittal Procedures: Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES.

B. Shop Drawings:

1. Submit shop drawings to show plans, sections, and details for clear communication of the preparation and finishing requirements for all construction elements immediately adjacent or connecting to the shielding system.

2. Include:

a. Details for attaching or connecting items to shielding or its penetrations.

b. Clearly indicate materials and labor to be provided by

13 95 00 - 4 others.

C. Manufacturer's Literature and Data:

1. Description of each product.

2. Installation instructions.

3. Warranty.

D. Performance Test Reports:

1. Provide copies of all test reports to the COR.

a. Report must show date and time of test, personnel present, specific test methodology, equipment and calibration data, measurements taken, and results obtained.

b. Include test reports for:

1) Qualification Test.

2) Acceptance Test.

3) Ground Isolation Monitoring Test.

E. Sustainable Construction Submittals:

1. Recycled Content: Identify post-consumer and pre-consumer recycled content percentage by weight.

2. Low Pollutant-Emitting Materials:

a. Show volatile organic compound types and quantities.

F. Test Reports: Certify each product complies with Specifications.

1. Control windows.

2. Cassette transfer cabinets.

3. Door.

4. Hardware.

5. Door frames.

6. Threshold.

G. Qualifications: Substantiate qualifications comply with

Specifications.

1. Manufacturer with project experience list.

H. Delegated Design Drawings and Calculations: Signed and sealed by responsible design professional.

I. Operation, Maintenance Data, and Materials:

1. Care instructions for each exposed finish product.

2. Start-up, maintenance, troubleshooting, emergency, and shut-down instructions for each operational product.

3. Submit maintenance procedures and materials to the COR at the time the installation is complete.

13 95 00 - 5

4. Provide an initial supply of maintenance materials and parts, sufficient for the first year of operation.

1.6 QUALITY ASSURANCE

A. Qualifications of Manufacturer:

1. Shielding manufacturer shall have a minimum eight (8) years OF experience in manufacture and installation of radio frequency shielding system of type required for this Project and be of materials and system compatible with EEG equipment required for the Project.

2. Manufacturer shall demonstrate that all components are manufactured directly by the manufacturers within the manufactured own plant.

3. Manufacturer shall demonstrate that no parts, sub-assemblies, components or systems are remanufactured, reconditioned, or used.

4. Manufacturer shall have within his direct employment experienced and properly equipped installation and erection crews.

5. Manufacturer shall have within his direct employ experienced and properly equipped engineering, design, and project management departments.

6. Manufacturer shall coordinate with the each Contractor, Architect and Owner as needed to control noise through the shielding enclosure, including flanking paths, HVAC ducts, waveguides, RF/MAGNETIC room doors, junctions between the

RF/MAGNETIC room and parent wall, including doors and windows, to meet the shielding requirements indicated on the Construction

Drawings and the RE Shielding Drawings.

1.7 WARRANTY

A. Construction Warranty: FAR clause 52.246-21, "Warranty of

Construction."

B. Enclosure shall be guaranteed, in writing, by the manufacturer against defective materials and workmanship and to retain the specified shielding characteristics for periods as follows:

1. Defects Include: Warp or twist exceeding 1/4 inch in any face dimension of door (including full diagonal), measured minimum six months after doors have been hung and finished.

2. Warranty Period: Two years.

13 95 00 - 6

C. Basic Enclosure: Five (5) years.

D. EMI Electrical Filters, RF/MAGNETIC Shielded Doors, RF/MAGNETIC

Shielded Windows, Pipe Penetrations, and Air Vent RF/MAGNETIC

Filters: Two (2) years.

E. Pass-through warranties provided by Subcontractors to manufacturer shall not be allowed.

PART 2 - PRODUCTS

2.1 MATERIALS

A. General:

1. Work Included: Perform all work necessary and required for the construction of the Project, including, but not limited to the following:

a. All required shielding material for walls, floors and ceilings, including temporary protective materials for windows and doors.

b. Door and window units (borrowed lights) including frames, RF/MAGNETIC screens, plate glass and all hardware for a complete unit.

c. RF/MAGNETIC filter panel with a grounding stud for room lighting and power and miscellaneous requirements except for those supplied by the imaging equipment manufacturer.

d. Provisions for utility line penetrations (plumbing and assemblies).

e. Wave guides with extension collars for HVAC penetrations and cryogen venting.

f. Testing to show compliance with the specified performance. A minimum of two (2) tests are required, the first immediately after the shielded enclosure is completed (Qualification

Testing) and the second test after the magnet has been delivered and the finishes have been installed (Acceptance

Testing).

B. Use of Dissimilar Metals:

1. Use of the following materials in manufacture and installation of shielded enclosure shall not be permitted.

a. Dissimilar metals that exhibit an anodic voltage differential greater than 0.25 volts.

b. Copper or aluminum in direct contact with bare concrete.

13 95 00 - 7

c. Zinc plated RF/MAGNETIC framing in direct contact with copper

RF/MAGNETIC medium.

d. Copper plated steel or brass RF/MAGNETIC framing in direct contact with galvanized steel.

2. Use of bronze or brass flame spray treatment of steel or aluminum RF/MAGNETIC contact surfaces in manufacturer and installation of shielded enclosure shall be permitted.

3. RF/MAGNETIC shielding medium shall display an anodic voltage differential index of less than 0.04 volts and a cathodic group number of 0.00 volts to 0.40 volts.

4. Construct shielding system with proper materials so that ionic conduction across joints and RF/MAGNETIC seams shall be less than 0.10 volts.

2.1 ACCEPTABLE MANUFACTURERS

A. The following includes Shielding Providers found familiar with the requirements for this type of Project:

1. Basis of Design: The Drawing details and these Specifications were based upon information provided by ETS.Lindgren, an ESCO

Technologies Company, 1560 North Wood Dale Road, Suite G, Wood

Dale, IL 60191 Phone: 630-307-7200, FAX: 630-307-7571, Web site:

www.ets-lindgrenrf.com

2. Other Companies capable of providing comparable materials, products and services for the installation include:

a. Gaven Industries Inc. 6655 N Noah Dr, Saxonburg, PA 16056, Phone: 724-352-8100, FAX: 724-352-8121.

b. Magnetic Resonance Technologies, Inc. 4261 Hamann Parkway, Willoughby, Ohio 44094, Phone: 440-942-2922, FAX: 440-942-2167.

B. Other vendors submitted for equivalency as a substitution by the

Bidder must be received ten (10) days prior to Bid Receipt, and found acceptable to the Magnet Equipment provider.

2.2 MANUFACTURER’S MATERIALS

A. Shielding Material: Flectron Product No. 3027-235 from Laird

Technologies Inc., Chesterfield, MO.

RF/MAGNETIC seam and joint construction methods shall provide the maximum in shield conductivity, low impedance, RF/MAGNETIC attenuation, and reduction of eddy current generation.

B. Primary Enclosure: Vertical walls shall be made integral with RF

13 95 00 - 8 system.

1. Refer to Laird Technologies FLECTRON INSTALLATION MANUAL for installation details

2. Fire rating: All primary shield wood framing shall carry a visible

ASTM E84-00 fire rating stamp. Minimum burn characteristics:

a. Flame spread classification: 5

b. Smoke development classification: 30

3. Mechanically Fastened Shielded Assembly:

a. Mechanically fasten RF/MAGNETIC materials together to provide continuous, constant and uniform RF/MAGNETIC seams providing attenuation of electromagnetic energy to the level required by the installed EEG system.

4. Soldered Shielded Assembly:

a. Wall and shielding materials shall be assembled per the manufacturer’s details.

C. Door and Frame Assembly: Factory assembled units consisting of door leaves, door frame, and seal assembly to maintain the shielding effectiveness equal to that of the shielded enclosure.

1. Frame: Hollow metal construction as specified for interior door frames.

a. All corners are to be fully welded and ground smooth.

b. Frame shall be RF/MAGNETIC shielding manufacturer's standard assembly as fabricated and installed to maintain the shielding effectiveness of the enclosure.

2. Door Leaf: Door material and construction as standard with

RF/MAGNETIC shielding manufacturer's requirements, finished in plastic laminate or wood veneer, surfacing material to match other doors indicated in Door Schedule.

3. Door Hardware:

a. Hardware items and finish of hardware shall be as acceptable to Architect. Refer to 08 71 00 Door Hardware.

D. Accessories: The following accessories shall be provided as integral parts of the shielding system:

1. Electrical Penetrations: Provide RF/MAGNETIC filters on all incoming electrical lines.

a. A filter shall be provided for each electrical conductor, including neutrals.

13 95 00 - 9

b. Mounting method shall not degrade the attenuation of the enclosure. Coordinate quantities and locations of filters with electrical requirements and shop drawings.

c. General requirements--refer to MEPT for the following:

1) Lighting circuits.

2) Convenience outlets.

3) Smoke detector.

2. HVAC Penetrations:

a. HVAC wave guide vents shall be brass construction with an aluminum extension of sufficient length to extend through the adjacent room walls.

b. Connection to the tail shall be made via a canvas or PVC connector so as not to defeat the single point grounding requirements.

c. The ductwork to be installed inside of the enclosure shall be connected directly to the wave guide vent.

d. Frame the rough openings 3/4" larger in both dimensions than the scheduled sizes.

3. Other Penetrations:

a. Other penetrations such as shall be provided with a wave guide per the requirements of the EEG Equipment Manufacturer.

b. Provide wave guides for a sprinkler system and medical gases as required in an approved manner.

4. Provide appropriate isolating sealant, gaskets, or insulating assemblies between the general trades construction and components of the RF/MAGNETIC enclosure, and all required penetrations through it, to provide for good sound and vibration control from the Room to the adjacent occupied spaces.

2.3 PERFORMANCE

A. RF/MAGNETIC shielded enclosure shall be designed and installed to provide a highly conductive medium (material conductivity of one

(1) or greater) that will attenuate externally generated electromagnetic energy to a level acceptable for proper operation of the installed EEG Imaging System.

B. Construct installed enclosure so that, without connections to earthing terminal, ohmic value of enclosure relative to earth ground shall be equal to or greater than 1000 ohms.

13 95 00 - 10

PART 3 - EXECUTION

3.1 PREPARATION

A. Verify on-site conditions affecting the work of this Section.

Coordinate any discrepancies with the COR and EEG equipment vendor.

B. Start of shielding installation indicates that site conditions are acceptable to the Shielding Subcontractor.

3.2 INSTALLATION

A. All materials shall to be installed by the manufacturer of the shielding enclosure. Installation shall proceed after structural surface are ready to receive shielding materials in accordance with shielding manufacturers shop drawings and details on Drawings.

B. All materials shall be installed in a workmanlike manner, consistent with industry construction standards and in accordance with requirements of the EEG equipment vendor.

C. Shielding contractor, before leaving the job site at the end of the installation, shall review with the Contractor the proper procedures and details to be followed by other subcontractor in finishing the

Room.

3.3 FIELD QUALITY CONTROL

A. Test enclosure in accordance with MIL-STD-285, as modified for attenuation requirement of the EEG equipment.

B. Qualification Test: Perform testing immediately after completion of the shielding enclosure but prior to installation of finishes within the enclosure. Make no trade connections to enclosure until successful completion of test process.

1. Testing will be witnessed by the COTR and the EEG vendor.

2. Furnish a written test report to COTR.

C. Acceptance Test: Perform immediately after installation of the EEG equipment and the enclosure finishes have been completed to the COR and the EEG vendor.

1. Testing will be witnessed by the COR and the EEG vendor.

2. Furnish a written test report to the COTR.

D. Ground Isolation Monitoring Test: RF/MAGNETIC shielding contractor shall monitor ground isolation during RF/MAGNETIC shielding construction to verify a minimum of 1000 ohms resistance to ground

13 95 00 - 11 has been maintained. The shield supplier shall immediately correct deficiencies found that is the result of a fault condition caused by the enclosure supplier. General Contractor or COR shall monitor the shield for ground isolation after the initial RF/MAGNETIC shield construction and first RF/MAGNETIC test are completed. Immediately report deficiencies found to be caused by other trades during this period to the RF/MAGNETIC shield supplier.

1. Testing of ground isolation will be witnessed by the COR and EEG vendor.

2. Furnish a written test report to the COR.

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