226300 - GAS SYSTEMS FOR LABORATORY AND HEALTHCARE FACILITIES.pdf

CATH LAB SITE PREP at

RALPH JOHNSON VAMC

534-CSI-555

ADDENDUM 2 08-12-20

22 63 00 - 1

SECTION 22 63 00

GAS SYSTEMS FOR LABORATORY AND HEALTHCARE FACILITIES

PART 1 - GENERAL

1.1 DESCRIPTION

A. Central Laboratory and Healthcare Gas Systems: C onsisting of oxygen, nitrous oxide, nitrogen, and compressed air service s; complete, ready for operation, including all necessary piping, fitt ings, valves, cabinets, station outlets, rough-ins, ceiling servi ces, gages, alarms including low voltage wiring, nitrogen control pane ls, cylinder manifolds, air compressors, electric motors and sta rters, air dryers, filters, pressure regulators, dew point monitor, ca rbon monoxide monitor and all necessary parts, accessories, conne ctions and equipment. Match existing station outlet and inlet terminal connections.

F. Laboratory and healthcare gas system alarm wirin g from equipment to alarm panels.

G. A complete listing of all acronyms and abbreviat ions are included in

Section 22 05 11, COMMON WORK RESULTS FOR PLUMBING.

1.2 RELATED WORK

A. Section 01 00 00, GENERAL REQUIREMENTS.

B. Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, A ND SAMPLES.

C. Section 01 81 13, SUSTAINABLE CONSTRUCTION REQUI REMENTS.

E. Section 07 84 00, FIRESTOPPING: Sealing around p ipe penetrations to maintain the integrity of time rated construction.

F. Section 07 92 00, JOINT SEALANTS: Sealing around pipe penetrations through the floor to prevent moisture migration.

G. Section 10 25 13, PATIENT BED SERVICE WALLS: Pre fabricated bedside patient units (PBPU).

H. Section 13 05 41, SEISMIC RESTRAINT REQUIREMENTS FOR NON-STRUCTURAL

COMPONENTS: Seismic Restraint.

I. Section 22 05 11, COMMON WORK RESULTS FOR PLUMBI NG: General requirements and items common to more than one sect ion of Division 22.

J. Section 22 05 12, GENERAL MOTOR REQUIREMENTS FOR PLUMBING EQUIPMENT:

Electric motors.

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L. SECTION 22 62 00, VACUUM SYSTEMS FOR LABORATORY AND HEALTHCARE

FACILITIES: Vacuum Piping and Equipment.

M. Section 23 09 23, DIRECT-DIGITAL CONTROL SYSTEM FOR HVAC: Alarm interface with BAS.

N. Section 26 05 19, LOW-VOLTAGE ELECTRICAL POWER C ONDUCTORS AND CABLES:

Control wiring.

O. Section 26 05 33, RACEWAY AND BOXES FOR ELECTRIC AL SYSTEMS: Conduit.

P. Section 26 27 26, WIRING DEVICES: Electrical wir ing and accessories.

Q. Section 26 29 11, MOTOR CONTROLLERS: Motor start ers.

1.3 APPLICABLE PUBLICATIONS

A. The publications listed below form a part of thi s specification to the extent referenced. The publications are referenced in the text by the basic designation only.

B. American Society of Mechanical Engineers (ASME):

A13.1-2007 (R2013)......Scheme for the Identificati on of Piping Systems

B16.15-2013.............Cast Copper Alloy Threaded Fittings: Classes

125 and 250

B16.22-2013.............Wrought Copper and Copper A lloy Solder-Joint

Pressure Fittings

B16.50-2013.............Wrought Copper and Copper A lloy Braze-Joint

Pressure Fittings

B40.100-2013............Pressure Gauges and Gauge A ttachments

ASME Boiler and Pressure Vessel Code -

BPVC Section VIII-2015..Rules for Construction of P ressure Vessels, Division I

BPVC Section IX-2015....Welding, Brazing, and Fusin g Qualifications

C. American Society of Sanitary Engineers (ASSE):

6000 Series-2012........Professional Qualifications Standard for

Medical Gas Systems Personnel

D. American Society for Testing and Materials (ASTM ):

B43-2014................Standard Specification for Seamless Red Brass

Pipe, Standard Sizes

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B687-1999 (2011)........Standard Specification for Brass, Copper, and

Chromium-Plated Pipe Nipples

B819-2000 (R2011).......Standard Specification for Seamless Copper Tube for Medical Gas Systems

D1785-2012..............Standard Specification for Poly (Vinyl

Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120

E. American Welding Society (AWS):

A5.8M/A5.8-2011.........Specification for Filler Me tals for Brazing and

Braze Welding

B2.2/B2.2M-2010.........Specification for Brazing P rocedure and

Performance Qualification

F. Compressed Gas Association (CGA):

C-9-2013................Standard Color Marking of C ompressed Gas

Containers for Medical Use

G-4.1-2009..............Cleaning Equipment for Oxyg en Service

G-10.1-2008.............Commodity Specification for Nitrogen

P-9-2008................The Inert Gases: Argon, Nit rogen, and Helium

V-1-2013................Standard for Compressed Gas Cylinder Valve

Outlet and Inlet Connections

G. Manufacturing Standardization Society (MSS):

SP-72-2010a.............Ball Valves With Flanged or Butt-Welding Ends

For General Service

SP-110-2010.............Ball Valves Threaded, Socke t-Welding, Solder

Joint, Grooved and Flared Ends

H. National Electrical Manufacturers Association (N EMA):

ICS 6-1993 (R2001, R2006) Industrial Control and Sy stems Enclosures

I. National Fire Protection Association (NFPA):

99-2015.................Health Care Facilities Code

1.4 SUBMITTALS

A. Submittals, including number of required copies, shall be submitted in accordance with Section 01 33 23, SHOP DRAWINGS, PR ODUCT DATA, AND

SAMPLES.

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B. Information and material submitted under this se ction shall be marked

“SUBMITTED UNDER SECTION 22 63 00, GAS SYSTEMS FOR LABORATORY AND

HEALTHCARE FACILITIES”, with applicable paragraph i dentification.

C. Manufacturer's Literature and Data including: Fu ll item description and optional features and accessories. Include dimensio ns, weights, materials, applications, standard compliance, model numbers, size, and capacity.

1. Piping.

2. Valves.

3. Inlet and outlet cocks

4. Valve cabinets.

5. Gages.

6. Station outlets and rough-in assemblies.

7. Ceiling services.

8. Alarm controls and panels.

9. Pressure Switches.

10. Nitrogen control panels.

11. Manifolds.

12. Air compressor systems (Provide certified compr essor test data at startup.):

a. Compressors: Manufacturer and model.

b. Characteristic performance curves.

c. Compressor operating speed (RPM).

d. Capacity: Free air delivered at indicated pressu re (L/s) (SCFM).

e. Type of bearing in compressor.

f. Type of lubrication.

g. Type and adjustment of drive.

h. Electric motors: Manufacturer, frame and type.

i. Speed of motors (RPM).

j. Current characteristics and horsepower of motors .

k. Receiver capacity and rating.

l. Air silencer: Manufacturer, type and model.

m. Air filters: Manufacturer, type, model and capac ity.

n. Pressure regulators: Manufacturer and capacity.

o. Dew point monitor: Manufacturer, type and model.

p. Air dryers: Manufacturer, type, model and capaci ty (L/s) (SCFM).

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q. Carbon monoxide monitor manufacturer, type and m odel.

r. Aftercoolers.

D. Station Outlets: Submit letter from manufacturer stating that outlets are designed and manufactured to comply with NFPA 9 9. Outlet shall bear label of approval as an assembly, of Underwriters L aboratories, Inc., or Associated Factory Mutual Research Corporation.

E. Certification: The completed systems have been i nstalled, tested, purged, analyzed and verified in accordance with th e requirements of this specification. Certification shall be submitte d to COR.

1.5 QUALITY ASSURANCE

A. Materials and Installation: In accordance with N FPA 99 and as specified.

B. Equipment Installer: Show technical qualificatio ns and previous experience in installing laboratory and healthcare equipment on three similar projects. Submit names, phone numbers, and addresses of referenced projects. Installers shall meet the qual ifications of ASSE

Standard Series 6000.

C. Equipment Supplier: Provide evidence of equivale nt product installed at three installations similar to this project that ha s been in satisfactory and efficient operation for three year s. Submit names, phone numbers, and addresses where the product is i nstalled.

D. Laboratory and healthcare System Testing Organiz ation: The testing shall be conducted by a party technically competent and experienced in the field of laboratory and healthcare pipeline tes ting. Testing and systems verification shall be performed by personne l meeting the qualifications of ASSE Standard Series 6000. Such t esting shall be performed by a party other than the installing cont ractor.

E. Provide the names of three projects where testin g of medical or laboratory gases systems has been performed by the testing agency.

Include the name of the project, names of such pers ons at that project who supervised the work for the project owner, or w ho accepted the report for the project owner, and a written stateme nt that the projects listed required work of similar scope to that set f orth in this specification.

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F. Submit the testing agency's detailed procedure w hich shall be followed in the testing of this project. Include details of the testing sequence, procedures for cross connection tests, ou tlet function tests, alarm tests, purity tests, etc., as required by thi s specification. For purity test procedures, include data on test method s, types of equipment to be used, calibration sources and metho d references.

G. Certification: Provide COR documentation 10 work ing days prior to submitting request for final inspection to include all test results, the names of individuals performing work for the te sting agency on this project, detailed procedures followed for all tests , and certification that all results of tests were within limits allowe d by this specification.

H. “Hot taps” are prohibited for operating medical oxygen systems. Methods for connection and extension of active and pressuri zed medical gas systems without subsequent medical gas testing and verification are prohibited.

I. Bio-Based Materials: For products designated by the USDA’s Bio-

Preferred Program, provide products that meet or ex ceed USDA recommendations for bio-based content, so long as p roducts meet all performance requirements in this specifications sec tion. For more information regarding the product categories covere d by the Bio-

Preferred Program, visit http://www.biopreferred.go v.

1.6 AS-BUILT DOCUMENTATION

A. Submit manufacturer’s literature and data update d to include submittal review comments and any equipment substitutions.

B. Submit operation and maintenance data updated to include submittal review comments, substitutions and construction rev isions shall be in electronic version on compact disc or DVD inserted into a three ring binder. All aspects of system operation and mainten ance procedures, including piping isometrics, wiring diagrams of all circuits, a written description of system design, control logic, and se quence of operation shall be included in the operation and maintenance manual. The operations and maintenance manual shall include tro ubleshooting techniques and procedures for emergency situations. Notes on all special systems or devices such as damper and door closure interlocks

22 63 00 - 7 shall be included. A List of recommended spare part s (manufacturer, model number, and quantity) shall be furnished. Inf ormation explaining any special knowledge or tools the owner will be re quired to employ shall be inserted into the As-Built documentation.

C. The installing contractor shall maintain as-buil t drawings of each completed phase for verification; and, shall provid e the complete set at the time of final systems certification testing. As-built drawings are to be provided, and a copy of them in Auto-CAD version current edition provided on compact disk or DVD. Should the installing contractor engage the testing company to provide as -built or any portion thereof, it shall not be deemed a conflict of interest or breach of the ‘third party testing company’ require ment.

D. Certification documentation shall be provided to COR 10 working days prior to submitting the request for final inspectio n. The documentation shall include all test results, the names of indivi duals performing work for the testing agency on this project, detail ed procedures followed for all tests, and certification that all results of tests were within limits specified.

PART 2 - PRODUCTS

2.1 PIPING AND FITTINGS

A. Copper Tubing: Type "K", ASTM B819, seamless cop per tube, hard drawn temper, with wrought copper fittings conforming to ASME B16.22 or brazing fittings complying with ASME B16.50. Size d esignated reflecting nominal inside diameter. All tubing and fittings sh all be labeled

"ACR/OXY", "OXY", "OXY/MED", "ACR/MED", or "MED".

B. Brazing Alloy: AWS A5.8M/A5.8, Classification BC uP, greater than 538 degrees C (1000 degrees F) melting temperature. Flu x is strictly prohibited for copper-to-copper connections.

C. Threaded Joints: Polytetrafluoroethylene (Teflon ) tape.

D. Underground Protective Pipe: Polyvinyl Chloride (PVC), ASTM D1785, Schedule 80.

E. Memory metal couplings: Temperature and pressure rating shall not be less than that of a brazed joint in accordance with NFPA 99, paragraph

5.1.10.6.1.

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F. Apply piping identification labels at the time o f installation in accordance with NFPA 99. Apply supplementary color identification in accordance with CGA Pamphlet C-9.

G. Special Fittings: The following special fittings shall be permitted to be used in lieu of brazed joints:

1. Memory-metal couplings having temperature and pr essure ratings joints not less than that of a brazed joint.

2. Listed or approved metallic gas tube fittings th at, when made up, provide a permanent joint having the mechanical, th ermal, and sealing integrity of a brazed joint.

3. Dielectric fittings where required by the manufa cturer of special medical equipment to electrically isolate the equip ment from the piping distribution system.

4. Axially swaged, elastic strain preload fittings providing metal to metal seal having pressure and temperature ratings not less than that of a brazed joint and when complete are perman ent and non-separable.

2.2 EXPOSED LABORATORY AND HEALTHCARE GASES PIPING

A. Finished Room: Use iron pipe size (IPS) chrome p lated brass or stainless steel piping for exposed laboratory and h ealthcare gas piping connecting fixtures, casework, cabinets, equipment and reagent racks when not concealed by apron including those furnish ed by the Government or specified in other sections.

1. Pipe: ASTM B43, standard weight.

2. Fittings: Fittings shall comply with ASME B16.15 cast bronze threaded fittings with chrome finish (125 and 250 p sig Classes).

3. Nipples: Nipples shall comply with ASTM B687, ch romium-plated.

4. Unions: Unions shall comply with MSS SP-72, MSS SP-110, brass or bronze with chrome finish. Unions 65 mm (2-1/2 inch es) and greater shall be flange type with approved gaskets.

5. Valves: Valves shall comply with MSS SP-72, MSS SP-110, brass or bronze with chrome finish.

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2.3 VALVES

A. Ball: In-line, other than zone valves in cabinet s:

1. 75 mm (3 inches) and smaller: Bronze/ brass body , MSS SP-72, MSS

SP-110, Type II, Class 150, Style 1, with tubing ex tensions for brazed connections, full port, three-piece or doubl e union end connections, Teflon seat seals, full flow, 4138 kPa (600 psig) WOG minimum working pressure, with locking type handle, cleaned for oxygen use and labeled for intended service.

2. 75 to 100 mm (3 to 4 inches): Bronze/ brass body , MSS SP-72 MSS

SP-110, Type II, Class 150, Style 1 with tubing ext ensions brazed to flanges, full port, three piece, double seal, Teflo n seals, full flow, 4138 kPa (600 psig) WOG minimum working press ure, with locking type handle, cleaned for oxygen use and labeled for intended service.

B. Check:

1. 75 mm (3 inches) and smaller: Bronze/brass body, straight through design for minimum pressure drop, spring loaded, se lf-aligning with

Teflon cone seat, vibration free, silent operation, supplied NPT female threads at each end with flow direction arro w permanently cast into, cleaned for oxygen use and labeled for i ntended service, 2758 kPa (400 psig) WOG minimum working pressure.

2. 100 mm (4 inches) and larger: Iron body, bronze trim, swing type, vertical or horizontal installation, flange connect ion, with flow direction arrow permanently cast into, cleaned for oxygen use and labeled for intended service, 1035 kPa (150 psig) W SP.

C. Zone Valve in Cabinet: Ball valve, bronze/ brass body, double seal, three piece or double union end connections, replac eable Teflon seat seals, Teflon stem seal, 4138 kPa (600 psig) WOG, c old, non-shock gas working pressure service to 100 kPa (29 inches Hg), cleaned for oxygen use and labeled for intended service, blowout proof stem, one quarter turn of handle to completely open or close. Provide tubing extensions factory brazed, and pressure tested. Provide 3.2 mm (1/8 inch) NPT gauge port for a 50 mm (2 inch) diameter monitoring gauge downstream of the shut off valve. Zone valves shall be securely a ttached to the cabinet and provided with type “K” copper tube exte nsions for making

22 63 00 - 10 connection to system piping outside the cabinet. Zo ne valves shall be products of one manufacturer, and uniform throughou t in pattern, overall size and appearance. Trim with color coded plastic inserts or color coded stick-on labels. Install valves in cabi nets such that cover window cannot be in place when any valve is in the closed position.

Color coding for identification plates and labels i s as follows:

SERVICE LABEL IDENTIFICATION COLORS MFG. STD.

CLR.

OXYGEN White letters on green background GREEN

MEDICAL AIR Black letters on yellow background YELL OW

2.4 VALVE CABINETS

A. Flush mounted commercially available item for us e with laboratory and healthcare services, not lighter than 1.3 mm (18 ga ge) steel or 1.9 mm

(14 gage) extruded aluminum, rigidly assembled, of adequate size to accommodate valve(s) and fittings. Punch or drill s ides to receive tubing. Provide anchors to secure cabinet to wall c onstruction. Seal openings in cabinet to be dust tight. Locate bottom of cabinet 1375 mm

(4 feet 6 inches) above finished floor.

B. Mount engraved rigid plastic identification plat e on wall above or adjacent to cabinet. Color code identification plat e to match gas identification colors as indicated above. Identific ation plate shall be clearly visible at all times. Provide inscriptions on plate to read in substance: "VALVE CONTROL SUPPLY TO ROOMS."

C. Cover plate: Fabricate from 1.3 mm (18 gage) she et metal with satin chromed finish, extruded anodized aluminum, or 0.85 mm (22 gage) stainless steel. Provide cover window of replaceabl e plastic, with a corrosion resistant device or lever secured to wind ow for emergency window removal. Permanently paint or stencil on win dow: CAUTION-CLOSE

ONLY IN EMERGENCY, SHUT-OFF VALVES FOR PIPED GASES" , or equivalent wording. Configure such that it is not possible to install window with

22 63 00 - 11 any valve in the closed position. Each valve shall have gauge upstream of valve inside valve box.

D. Cabinets and isolation valves shall be located a nd piped as shown on drawings, and at a minimum, so as to allow the isol ation of each smoke compartment separately. No cabinet shall serve more than one smoke compartment.

2.5 GAGES

A. Pressure Gages: Includes gages temporarily suppl ied for testing purposes.

1. For line pressure use adjacent to source equipme nt: ASME B40.1, pressure gage, single, size 115 mm (4-1/2 inches), for compressed air, nitrogen and oxygen, accurate to within 2 perc ent, with metal case. Range shall be two times operating pressure. Dial graduations and figures shall be black on a white background, o r white on a black background. Gage shall be cleaned for oxygen use, labeled for appropriate service, and marked "USE NO OIL". Insta ll with gage cock.

2. For all services downstream of main shutoff valv e: Manufactured for oxygen use, labeled for the appropriate service and marked "USE NO

OIL", 40 mm (1-1/2 inch) diameter gage with dial ra nge 1 to 690 kPa

(1 to 100 psig) for air service.

2.6 STATION OUTLETS

A. For all services except ceiling hose drops and n itrogen system: For designated service, consisting of a quick coupler a nd inlet supply tube. Provide coupler that is non-interchangeable w ith other services, and leak proof under three times the normal working pressure. Equip each station outlet with an automatic valve and a s econdary check valve to conform with NFPA 99. Equip each station inlet w ith an automatic valve to conform with NFPA 99. Place valves in the assembly to provide easy access after installation for servicing and re placement, and to facilitate line blow-out, purging, and testing. Fas ten each outlet and inlet securely to rough-in to prevent floating and provide each with a capped stub length of 6 mm (1/4-inch) (10 mm outsid e diameter) (3/8-inch outside diameter) tubing for connection to sup ply. Identification of each gas service shall be permanently cast into the back plate and

22 63 00 - 12 shall be visible through a transparent plastic guar d. Label stub tubing for appropriate service. Rough-in kits and test plu gs for PBPU are furnished under this specification but installed by manufacturer of

PBPU before initial test specified herein. Install completion kits

(valve body and face plate) for the remainder of re quired tests.

B. For Ceiling Hose Drops and Nitrogen Service: Bra ss, stainless steel or chromed metal non-interchangeable DISS connections for appropriate service to conform with CGA V-5. Equip each station outlet with an automatic valve and a secondary check valve to conf orm with NFPA 99.

Equip each station inlet with an automatic valve to conform with NFPA

99. Place valves in the assembly to provide easy ac cess after installation, for servicing and replacement, and to facilitate line blow-out, purging, and testing. Fasten each outlet and inlet securely to rough-in to prevent floating, and provide each w ith a capped stub length of 6 mm (1/4-inch) (10 mm (3/8-inch) outside diameter) tubing for connection to supply. Label stub tubing for app ropriate service.

Adjust to compensate for variations in plaster or c over thickness.

2.7 STATION OUTLETS

A. For all services: Brass, stainless steel or chro med metal non-interchangeable DISS connections for appropriat e service to conform with CGA V-5. Equip each station outlet with an aut omatic valve and a secondary check valve to conform with NFPA 99. Equi p each station inlet with an automatic valve to conform with NFPA 99. Pl ace valves in the assembly to provide easy access after installation, for servicing and replacement, and to facilitate line blow-out, purgi ng, and testing.

Fasten each outlet securely to outlet rough-in to p revent floating, and provide each outlet with a capped stub length of 6 mm (1/4-inch) (10 mm

(3/8-inch) outside diameter) tubing for connection to supply. Label stub tubing for appropriate service. Adjustable to compensate for variations in plaster or cover thickness. Rough-in kits and test plugs for PBPU are furnished under this specification but installed by manufacturer of PBPU before initial tests specified herein. Install outlet completion kits (valve body and face plate) for the remainder of required tests.

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2.8 STATION OUTLET ROUGH-IN

A. Anchor flush mounted rough-in securely to unit o r wall construction.

B. Modular Cover Plate: Die cast back plate, two-pi ece 0.85 mm (22 gage) stainless steel or 1.6 mm (16 gage) chromium plated metal, with mounting flanges on all four sides, secured to roug h-in with stainless steel or chromium plated countersunk screws.

C. Cover Plate for PBPU: One-piece with constructio n and material as indicated for modular cover plate.

D. Provide permanent, metal or plastic, identificat ion plates securely fastened at each outlet and inlet opening, with ins cription for appropriate service using color coded letters and b ackground. Metal plates shall have letters embossed on baked-on enam el background. Color coding for identification plates is as follows:

SERVICE LABEL IDENTIFICATION PLATE COLORS

OXYGEN White letters on green background and vice versa

MEDICAL AIR Black letters on yellow

2.9 CEILING SERVICES

A. Column Accessories:

1. Equip each utility column with flush type quick coupler gas service station outlets, except nitrogen outlets shall be D ISS, as specified under paragraph “Station Outlets”. Provide the foll owing outlets, mounted on the utility column: two oxygen, one nitr ous oxide, one nitrogen, one medical air, and one carbon dioxide, unless otherwise noted.

2. Provide one 48 mm by 75 mm (1-7/8 inches by 3 in ches) blank and face plate for future installation of mass spectrometer inlet tubing and wiring.

3. Provide spacing to allow for future installation of up to three monitoring receptacles.

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4. Provide four single, NEMA 5-20R, hospital grade receptacles rated at

20 amps, 125 volts, 2 pole, 3 wire; two grounding r eceptacles.

Coordinate with Section 26 27 26, WIRING DEVICES.

5. Equip column with four I.V. hooks.

6. Provide one 48 mm by 75 mm (1-7/8 inches x 3 inc hes) blank face plate for computer connection.

B. Articulating Utility Column:

1. Pendent: Articulating arm and head constructed o f lightweight aluminum alloy castings enclosed in high impact, fl ame retardant (UL

94 V-O) dress shrouds. Arm shall have a minimum of 508 mm (20 inch) vertical range of motion and a horizontal swing of 5.67 RAD (330 degrees), adjustable in .26 RAD (15 degree) increme nts. Head shall have a minimum rotation of 5.76 RAD (330 degrees) a djustable in .26

RAD (15 degree) increments. Minimum reach of the ar m from ceiling pivot to head pivot is 889 mm (37 inches). The tota l reach of the pendant with head perpendicular to the arm axis is 1450 mm (57 inches). Vertical motion shall be achieved by 93 wa tts (1/8 hp) induction motor. Driven linear motion is by hand co ntrol contained in housing. Pneumatic driven unit shall consist of a pneumatic cylinder, duplex regulating valve, pressure gauge, filter, pressure relief valve, master control valve and lubricator/m uffler. The entire vertical motor mechanism within unit shall b e furnished and pre-installed. The weight capacity of head shelf sh all be 79 kg (175 pounds) of weight mounted onto integral shelf or 57 kg (125 pounds) if the optional monitor mount is used. Nitrogen con trol system shall be integral with the unit with internal regulators mounted in the dispensing head. Factory assembled and tested. Prov ide with complete protective cover for the duration of construction.

2. Ceiling Support: Provide manufacturers standard anchoring device for pendant. Provide all required hardware to support p endent from the building structure.

C. Retractable Utility Column: Column: Upper sectio n for rigid mounting at drop-ceiling level, and counter-balanced telescopin g lower section capable of being extended and retracted minimum 450 mm (18 inches).

Provide fail-proof stops to prevent the underside f rom extending lower than 1675 mm (5 feet 6 inches) above finished floor . Equip with

22 63 00 - 15 combination handle and release lever to allow the l ower telescoping section to be positively locked in any position fro m fully extended to fully retracted. Construct vertical sections with 1 mm (20 gage) stainless steel and bottom plate with 1.9 mm (14 ga ge) stainless steel.

Welded seams shall be ground smooth for seamless ap pearance. Except for the escutcheon which may be extruded aluminum, expo sed surfaces shall be NAAMM Number 4 satin finish stainless steel. Pro vide access panels to allow inspection of interior column fittings. Ni trogen control system shall be integral with the unit with interna l regulators mounted in the dispensing head. Factory assembled and teste d. Provide with complete protective cover for the duration of const ruction.

D. Ceiling Mounted Station Outlets: As specified un der paragraph “Station

Outlets”, flush mount on ceiling and provide with h ose tubing drops and retractors. Extend male thread DISS connection thro ugh ceiling plate.

1. Hoses: Conductive, neoprene tubing, color coded for appropriate service, dropping to within 1375 mm (4 feet 6 inche s) from floor, with upper end of hose having female DISS connectio n with nut, easily finger tightened to ceiling outlet or inlet, and lower end of hose having DISS connection only for nitrogen servi ce, and matching existing equipment for all other services. Color co ding for hoses is as follows:

SERVICE HOSE COLOR

OXYGEN Green

AIR Yellow

2. Rough-in: Standard metal single gang, interchang eable, sectional or one piece, securely anchored to ceiling runner chan nels; ceiling plates of die cast plate, 0.85 mm (22 gage) stainle ss steel or 1.6 mm (16 gage) chromium plated metal. Attach identifi cation plate, as specified in paragraph “Station Outlet Rough-In”, t o ceiling plate adjacent to each outlet and inlet.

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3. Hose retractor kit: Chrome-plated, spring loaded assembly and hose clamps with stainless steel sash chain; to automati cally withdraw hose assembly a minimum of 508 mm (20 inches) from fully extended position of 1425 mm (4 feet 8 inches) to 1930 mm (6 feet 4 inches) above finished floor.

2.10 ALARMS

A. Provide all low voltage control wiring, includin g wiring from alarm relay interface control cabinet to BAS, required fo r complete, proper functioning system, in conformance with Section 26 05 19, LOW-VOLTAGE

ELECTRICAL POWER CONDUCTORS AND CABLES. Run wiring in conduit, in conformance with Section 26 05 33, RACEWAY AND BOXE S FOR ELECTRICAL

SYSTEMS.

B. Local Alarm Functions: Provide individual local air compressor malfunction alarms at each compressor system main c ontrol panel.

1. Compressor Malfunction Alarm: Each compressor sy stem receiving any of the following individual signals and sends a sin gle combined

"compressor malfunction alarm" signal to master ala rm panel.

a. Thermal Malfunction Alarm: Functions when discha rge air temperature exceeds 177 degrees C (350 degrees F), shutting down affected compressor.

b. Lead Compressor Fails to Start: Functions when l ead compressor fails to start when actuated, causing lag pump to s tart.

c. Lag Compressor In Use: Functions when the primar y or lead compressor is incapable of satisfying the demand. W hen three or more compressors are part of the system, the lag co mpressor in use alarm shall energize when the last compressor h as been signaled to start.

d. High Water Level in Receiver (liquid ring or wat er-cooled units).

e. High Water Level in Separator (if so required) ( liquid ring unit).

2. Desiccant Air Dryer Malfunction Alarm: Dryer rec eives the following individual signals and sends a single consolidated dryer malfunction alarm signal to master alarm panel.

a. Dew Point Alarm: Functions when line pressure de w point rises above 4 degrees C (40 degrees F) at 380 kPa (55 psi g).

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3. Vacuum Pump Malfunction Alarm: Pump system recei ves the following individual signals and sends a single consolidated pump malfunction alarm signal to master alarm panel.

a. High Temperature Shut down Alarm: Functions when exhaust air temperature exceeds 104 degrees C (220 degrees F), shutting down affected pump.

b. Lead Pump Fails to Start Alarm: Functions when l ead pump fails to start when actuated causing lag pump to start.

c. Lag Pump In Use Alarm: Functions when the primar y or lead vacuum pump in incapable of satisfying the demand. When th ree or more vacuum pumps are part of the system, the lag pump i n use alarm shall energize when the last vacuum pump has been s ignaled to start.

4. Waste Anesthetic Gas Disposal (WAGD) Lag In Use Alarm: Provide when a central WAGD system is used. The signal shall be manually reset.

5. Instrument Air Dew Point High: Functions when th e line pressure dew point is greater than -30 degrees C (-22 degrees F) .

C. Master Alarm Functions: Provide the following in dividual alarms at the master alarm panel.

1. Oxygen Alarms:

a. Liquid oxygen low level alarm: Functions when st ored liquid oxygen reaches a predetermined minimum level.

b. Reserve switchover alarm: Functions when, or jus t before, reserve oxygen supply goes in operation.

c. Reserve low supply alarm: Functions when content s of cylinder reserve oxygen supply are reduced to one day's aver age supply;

switch and contacts at the bulk tank control panel.

d. Reserve low pressure alarm: Functions when the g as pressure available in the liquid reserve oxygen supply is re duced below the pressure required to function properly.

e. Low pressure alarm: Functions when system pressu re downstream of the main shutoff valve drops below 275 kPa (40 psig ), ±14 kPa (±2 psig); operated by pressure switch or transmitters.

f. High pressure alarm: functions when system press ure downstream of main shutoff valve increases above 413 kPa (60 psig ), ±14 kPa (±2 psig) set points; operated by pressure switches or transmitters.

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g. Cylinder reserve pressure low: Functions when th e content of a cylinder reserve header is reduced below one day’s average supply.

5. Compressed Air Alarms:

a. Medical air dew point high alarm: Functions when the line pressure dew point rises above 2 degrees C (35 degr ees F) at 380 kPa (55 psig).

b. Carbon Monoxide Alarm: Functions when the carbon monoxide levels rise above 10 parts per million; receives signal fr om the carbon monoxide monitor.

c. Main Bank Filter Set Alarm: Functions when the p ressure drop across filter set increases more than 14 kPa (2 psi g) over that when filters are clean and new; operates by differe ntial pressure switch or transmitters.

d. Desiccant Prefilter Alarm: Functions when pressu re across the filter increases more than 21 kPa (3 psig) over tha t when filters are clean and new; operates by pressure differentia l switch.

e. Desiccant Post Filter Alarm: Functions when pres sure drop across filter increases more than 21 kPa (3 psig) over tha t when filters are clean and new; operates by pressure differentia l switch.

f. Desiccant Dryer Malfunction Alarm: Functions on any combination of failure of tower cycling and/or pressure dew poi nt rise above

60 degrees C at 690 kPa (140 degrees F at 100 psig) .

g. Aftercooler High temperature Alarm: Functions wh en aftercooler discharge air temperature exceeds 38 degrees C (100 degrees F).

h. Pressure Abnormal Alarm: Functions when system p ressure downstream of main shutoff valve drops below 550 kP a (80 psig) (± gage or increases above 830 kPa (120 psig) (±14 kPa (±2 psig) set points; operated by pressure switch.

i. Compressor Malfunction Alarm: Functions when com pressor system control panel signals compressor thermal malfunctio n alarm, lead compressor fails to start alarm or high water level in receiver or separator (if so required) receives signal from system control panel.

22 63 00 - 19

j. Low Lubricant Shutdown: For rotary screw compres sors. Functions when lubricant level drops to a low point. Receives signal from compressor control panel.

k. Instrument air dew point high alarm: Functions w hen the line pressure dew point rises above -30 degrees C (-22 d egrees F) at

380 kPa (55 psig).

D. Alarm Functions:

1. Oxygen, nitrous oxide, carbon dioxide and compre ssed air alarms:

Pressure alarms: Functions when pressure in branch drops below 275 kPa (40 psig), ±14 kPa (±2 psig) or increases above 414 kPa (60 psig), ±14 kPa (±2 psig) set points; operated by pr essure switches or transmitters.

2. Nitrogen alarms: Pressure alarms: Functions when pressure in branch drops below 1310 kPa (190 psig), ±14 kPa (±2 psig) or increases above 1517 kPa (220 psig), ±14 kPa (±2 psig) set po ints; operated by pressure switches or transmitters.

3. Vacuum alarms: Low vacuum alarm: Functions when vacuum in branch drops below 40 kPa (12 inches Hg); operated by vacu um switch.

5. Vacuum alarms:

a. Low vacuum alarm: Function when system vacuum up stream of main shutoff valve drops below 40 kPa (12 inches Hg); op erated by vacuum switch.

b. Filter differential pressure/back pressure alarm : Functions when discharge oil filter differential rises to set leve l, or when back pressure is sensed; receives signal from pump control panel.

c. Laboratory vacuum pump malfunction.

6. Waste Anesthetic Gas Disposal (WAGD) low alarm: Functions when WAGD vacuum level or flow is below effective operating l imits.

E. Alarm Panels:

1. General: Modular design, easily serviced and mai ntained; alarms operate on alternating current (AC) low voltage con trol circuit;

provide required number of transformers for efficie nt functioning of complete system. Alarm panels shall be integral uni ts, reporting compressed air and vacuum services, as required.

2. Box: Flush mounted, sectional or one piece, corr osion resistant.

Size box to accommodate required number of service functions for

22 63 00 - 20 each location, and for one audible signal in each b ox. Anchor box securely. Provide spare capacity to accommodate 50 percent of the number of provided alarm points.

3. Cover plate: Designed to accommodate required nu mber of signals, visual and audible, for each location, and containi ng adequate operating instructions within the operator's view. Bezel shall be extruded aluminum, chromium plated metal, or plasti c. Secure to the box with chromium plated or stainless steel counter sunk screws.

4. Service indicator lights: Red translucent plasti c or LED with proper service identification inscribed thereon. Number of lights and service instruction shall be as required for each l ocation. Provide each panel with a green test button of the same mat erial, inscribed with "PUSH TO TEST" or similar message.

5. Audible signal: Provide one in each alarm panel and connect electrically with all service indicator light funct ions.

6. Controls:

a. Visual signal: When the condition occurs which a ny individual service indicator light is to report, button for pa rticular service shall give a lighted visual signal which ca nnot be canceled until such condition is corrected.

b. Audible signal: Alarm shall give an audible sign al upon circuit energization of any visual signal. Audible signal s hall be continuous until silenced by pushing a button. This shall cancel and reset audible only, and not affect the visual s ignal. After silencing, subsequent alarms shall reactivate the a udible alarm.

c. Signal tester: Test button or separate normal li ght shall be continuously lighted to indicate electrical circuit serving each individual alarm is energized. Pushing test button shall temporarily activate all visual signals and sound a udible signal, thereby providing desired indications of status of system.

F. Alarm Relay Interface Control Cabinet: Design ca binet to transfer the closed circuit alarm signals through relays to a se t of terminals for monitoring signals at the BAS without interrupting the closed circuit system. Constructed of 1.9 mm (14 gage) steel, conf orming with NEMA ICS

6, Type 1, enclosures. Provide both normally open a nd normally closed

22 63 00 - 21 contacts for output signals, with number of circuit s required for full alarm capability at the BAS. Refer to Section 23 09 23, DIRECT-DIGITAL

CONTROL SYSTEM FOR HVAC for compatibility.

G. Alarm Network Communication: Network communicati ons board shall be installed in local alarm and connected to the facil ity’s Ethernet.

Local alarm modules shall send information to the m aster alarm and the data can be downloaded thru the computer connected to the contractor supplied network. Master alarm displays the message , sounds its alarm and saves the information in an event log. This eve nt log shall be downloaded to a computer file for tracking data and troubleshooting.

2.11 PRESSURE SWITCHES

A. General purpose, contact or mercury type, allowi ng both high and low pressure set points, with contact type provided wit h a protective dust cover; adjustable range; switches activate when ind icated by alarm requirements. Use one orifice nipple (or DISS deman d check valve) for each sensor or pressure switch.

2.15 PRESSURE REGULATORS

A. For 690 kPa (100 psig) regulator, provide duplex in parallel, valve for maintenance shut-down without service interruption. For additional pressures, locate regulators remote from compressor near point of use, and provide with isolation valves and valve bypass.

1. For systems 5 L/s (10 SCFM) and below: Brass or bronze body and trim, reduced pressure range 170 to 850 kPa (25 to 123 psig) adjustable, spring type, diaphragm operated, reliev ing. Delivered pressure shall vary not more than 1.0 kPa (0.15 psi g) for each 10 kPa (1.5 psig) variation in inlet pressure.

2.16 EMERGENCY LOW PRESSURE OXYGEN INLET

A. The Low Pressure Emergency Oxygen Inlet provides an inlet for connecting a temporary auxiliary source of oxygen t o the oxygen pipeline system for emergency or maintenance situat ions per NFPA 99.

B. The inlet consist of a 25 mm (1 inch) ball valve , pressure gauge and a

15 mm x 25 mm (1/2 inch x 1 inch) NPTF connection h oused in a weather tight enclosure. The enclosure is labeled "Emergenc y Low Pressure

22 63 00 - 22

Gaseous Oxygen Inlet", and includes a padlock stapl e to prevent tampering or unauthorized access. The enclosure is suitable for recess mounting on the exterior of the building being serv ed. The enclosure is

1.9 mm (14 gauge), cold rolled steel with a primer coat of paint. The

Emergency Oxygen Inlet is connected at a point down stream of the main supply line shutoff valve.

C. Check valves are provided for installation in th e emergency supply line and in the main supply line between the main line s hutoff valve and the emergency supply line connection per by NFPA 99. Ch eck valves have a cast bronze body and straight through design for mi nimum pressure drop.

D. The check valves for sizes under 75 mm (3 inch) are soft seated, bubble tight, self-aligning, and spring loaded, and ball t ype check valves. 75 mm (3 inch) check valves are hard seated, spring lo aded, self-aligning ball type checks with cone seats (3 inch valves may not be "bubble tight"). Check valves shall be fast acting type.

E. A relief valve is provided for installation in t he emergency supply line per NFPA 99. The relief valve has a brass body , single seat design, and is cleaned for oxygen use. It automatic ally reseats to provide a "bubble tight" seal after discharging exc ess gas. Pre-set at

520 kPa (75 psig).

PART 3 - EXECUTION

3.1 INSTALLATION

A. In accordance with NFPA 99. Run buried oxygen pi ping in PVC protective pipe for entire length including enclosure of fitti ngs and changes of direction.

B. Install cast escutcheon with set screw at each w all, floor and ceiling penetration in exposed finished locations and withi n cabinets and millwork.

C. Open ends of tube shall be capped or plugged at all times or otherwise sealed until final assembly to prevent infiltration of any foreign matter.

D. Cut piping square and accurately with a tube cut ter (sawing is prohibited) to measurements determined at place of installation. Ream tube to remove burrs, being careful not to expand t ube, and so no chips of copper remain in the tube. Work into place witho ut springing or

22 63 00 - 23 forcing. Bottom tube in socket so there are no gaps between tube and fitting. Exercise care in handling equipment and to ols used in cutting or reaming of tube to prevent oil or grease being i ntroduced into tubing. Where contamination has occurred, material is no longer suitable for oxygen service.

E. Spacing of hangers: NFPA 99.

F. Rigidly support valves and other equipment to pr event strain on tube or joints.

G. While being brazed, joints shall be continuously purged with oil free nitrogen. The flow of purged gas shall be maintaine d until joint is cool to touch.

H. Do not bend tubing. Use fittings.

I. Support ceiling column assembly from heavy sub-m ounting castings furnished with the unit as part of roughing-in. Anc hor with 15 mm

(1/2-inch) diameter bolts attached to angle iron fr ame supported from structural ceiling, unless otherwise indicated.

J. Provide two 25 mm (1 inch) minimum conduits from ceiling column assembly to adjacent corridor, one for mass spectro meter tubing and wiring and one for monitor wiring, for connection t o signal cabling network.

K. Install pressure switches, transmitter and gauge s to be easily accessed, and provide access panel where installed above plaster ceiling. Install pressure switch and sensors with o rifice nipple between the pipe line and switches/sensors.

L. Apply pipe labeling during installation process and not after installation is completed. Size of legend letters s hall be in accordance with ASME A13.1.

M. Pipe compressor intake to a source of clean ambi ent air as indicated in

NFPA 99.

N. After initial leakage testing is completed, allo w piping to remain pressurized with testing gas until testing agency p erforms final tests.

O. Penetrations:

1. Fire Stopping: Where pipes pass through fire par titions, fire walls, smoked partitions, or floors, install a fire stop t hat provides an effective barrier against the spread of fire, smoke and gases as specified in Section 07 84 00, FIRESTOPPING, with i ntumescent

22 63 00 - 24 materials only. Completely fill and seal clearances between raceways and openings with the fire stopping material.

2. Waterproofing: At floor penetrations, completely seal clearances around the pipe and make watertight with sealant as specified in

Section 07 92 00, JOINT SEALANTS. Bio-based materia ls shall be utilized when possible.

P. Provide 40 mm (1-1/2 inch) diameter line pressur e gage downstream of zone valve in cabinets.

Q. Provide zone valves in cabinets where indicated and outside each

Operating Room and a minimum one zone valve assembl y for each 18 outlet set.

3.2 STARTUP AND TESTING

A. Initial Tests: Blow down and high and low pressu re leakage tests as required by NFPA 99 with documentation.

B. Laboratory and/or healthcare testing agency shal l perform the following:

1. Perform and document all cross connection tests, labeling verification, supply system operation, and valve an d alarm operation tests as required by, and in accordance with NFPA 9 9 and the procedures set forth in pre-qualification documenta tion.

2. Verify that the systems, as installed, meet or e xceed the requirements of NFPA 99, this specification, and th at the systems operate as required.

3. Piping purge test: For each positive pressure ga s system, verify cleanliness of piping system. Filter a minimum of 1 000 liters (35 cubic feet) of gas through a clean white 0.45 micro n filter at a minimum velocity of 100 liters per minute (3.5 SCFM ). Filter shall show no discoloration, and shall accrue no more tha n 0.1 mg

(0.0000035 ounces) of matter. Test each zone at the outlet most remote from the source. Perform test with the use o f an inert gas as described in CGA P-9.

4. Piping purity test: For each positive pressure s ystem, verify purity of piping system. Test each zone at the most remote outlet for dew point, carbon monoxide, total hydrocarbons (as meth ane), and halogenated hydrocarbons, and compare with source g as. The two tests

22 63 00 - 25 shall in no case exceed variation as specified in p aragraph, “Maximum Allowable Variation”. Perform test with th e use of an inert gas as described in CGA P-9.

5. Outlet and inlet flow test:

a. Test all outlets for flow. Perform test with the use of an inert gas as described in CGA P-9.

b. Oxygen, nitrous oxide and air outlets shall deli ver 100 Lpm (3.5

SCFM) with a pressure drop of no more than 34 kPa ( 5 psig), and static pressure of 345 kPa (50 psig).

c. Nitrogen outlets shall deliver 565 Lpm (20 SCFM) with a pressure drop of no more than 34 kPa (5 psig), and static pr essure of 1448 kPa (210 psig).

d. Needle valve air outlets shall deliver 1.5 SCFM with a pressure drop of no more than five psig, and static pressure of 345 kPa

(50 psig).

6. Source Contamination Test: Analyze each pressure gas source for concentration of contaminants, by volume. Take samp les for air system test at the intake and at a point immediatel y downstream of the final filter outlet. The compared tests shall i n no case exceed variation as specified in paragraph “Maximum Allowa ble Variation”.

Allowable concentrations are below the following:

Dew point, air 4 degrees C (40 degrees F) pressure dew point at 690 kPa (100 psig)

Carbon monoxide, air 10 mg/L (ppm)

Carbon dioxide, air 500 mg/L (ppm)

Gaseous hydrocarbons as methane, air

25 mg/L (ppm)

Halogenated hydrocarbons, air

2 mg/L (ppm)

7. Analysis Test:

a. Analyze each pressure gas source and outlet for concentration of gas, by volume.

b. Make analysis with instruments designed to measu re the specific gas dispensed.

22 63 00 - 26

c. Allowable concentrations are within the followin g:

1) Laboratory air 19.5 percent to 23.5 percent oxyg en.

Oxygen >=97% plus oxygen

Medical air 19.5% to 23.5% oxygen

8. Maximum Allowable Variation: Between comparative test results required are as follows:

Dew point 2 degrees C (35 degrees F)

Carbon monoxide 2 mg/L (ppm)

Total hydrocarbons as methane

1 mg/L (ppm)

Halogenated hydrocarbons

2 mg/L (ppm)

C. The CxA will observe startup and contractor test ing of selected equipment. Coordinate the startup and contractor te sting schedules with the COR and CxA. Contractor shall provide a minimum of 10 working days prior to startup and testing.

3.3 CONNECTION TO EXISTING LABORATORY GAS SYSTEM:

A. Contactor shall test the existing system for hyd rocarbons, dew point, etc. per NFPA 99. If problems are present, the COR would notify the facility of the results. The facility would then ma ke the necessary repairs and/or maintenance prior to connecting to n ew system.

B. Install shut-off valve at the connection of new line to existing line.

C. Time for shutdown of the existing laboratory and healthcare system shall be coordinated at least 10 work days prior to shutdown with the

COR and VA Medical Center.

D. Shut off all oxygen zone valves and gas riser va lves if the section to be connected cannot be totally isolated from the re mainder of the system.

E. Prior to any work being done, check the new pipe line for particulate or other forms of contamination per NFPA 99.

22 63 00 - 27

F. Ensure that the correct type of pipe tubing and fittings are being used.

G. Make a spot check of the existing pipelines in t he facility to determine the level of cleanness present.

H. Reduce the pressure to zero and make the tie-in as quickly as possible.

A nitrogen purge is not required since this would r equire…