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HomeMy WebLinkAboutB14-0240_2014-130.226000 Gas and Vacuum Systems for Laboratory and Healthcare Facilities_1411771260.pdf CCD-2 18 SEPTEMBER 2014 SECTION 226000—GAS AND VACUUM SYSTEMS FOR LABORATORY AND HEALTHCARE FACILITIES PART 1 - GENERAL 1.1 QUALITY ASSURANCE: A. Manufacturer's Qualifications: Firms regularly engaged in manufacture of medical gas systems equipment and products, of types, materials, and sizes required, whose products have been in satisfactory use in similar service for not less than 5 years. B. Installer Qualifications: Firm with at least 3 years of successful installation experience on projects with medical gas systems work similar to that required for project. 1. Individual installers shall be qualified in accordance with ASME Boiler and Pressure Vessel Code, Section IX as modified by NFPA 99. 2. On site supervisors shall have completed a 32 hour training course on the installation of medical gas systems in accordance with ANSI requirements. C. Codes and Standards: 1. NFPA Compliance: Install and test medical gas systems in accordance with the latest version of NFPA 99. 2. ASME Compliance: Provide medical gas pressure vessels and relief valves in accordance with ASME "Boiler and Pressure Vessel Code"; provide ASME Code Symbol Stamp. 3. ASME Compliance: Fabricate and install medical gas systems in accordance with ASME B31.9 "Building Service Piping". 4. UL Compliance: Provide electrical components which are UL-listed and have UL label affixed. 5. All equipment supplied under this section shall be compatible with existing secondary equipment, if any. 6. Medical compressed air shall be oil free air complying, as a minimum with Grade D in Compressed Gas Association, Inc., pamphlet G-7.1, commodity specification for air, and having a maximum dew point of-20 degrees F. (-28.9 degrees C.). 1.2 SUBMITTALS: A. Product Data: Submit manufacturer's technical product data and installation instructions for medical gas systems materials and products. B. Shop Drawings: Submit scaled layout drawings of medical gas systems pipe and fittings including, but not necessarily limited to, pipe and tube sizes, locations, elevations and slopes of horizontal runs, wall and floor penetrations, equipment connections, and gas outlets. Indicate interface and spatial relationship between piping and proximate equipment. C. Record Drawings: At project closeout, submit record drawings of installed systems products; in accordance with requirements of Division 23. D. Wiring Diagrams: Submit manufacturer's electrical requirements for power supply wiring to units. Submit manufacturer's ladder-type wiring diagrams for interlock and control wiring. Clearly differentiate between portions of wiring that are factory-installed and portions to be field-installed. 13026.01 /Vail Valley Medical 226000 - 1 GAS AND VACUUM SYSTEMS FOR Center Cath Lab LABORATORY AND HEALTHCARE FACILITIES CCD-2 18 SEPTEMBER 2014 E. Maintenance Data: Submit maintenance data and parts lists for medical gas systems materials and products. Include this data, product data, shop drawings, record drawings, and wiring diagrams in maintenance manual; in accordance with requirements of Division 23. F. Installer Qualifications: Submit installer qualifications, including brazing certifications and medical gas training documentation. 1.3 DELIVERY, STORAGE, AND HANDLING: A. Deliver medical gas equipment, including air compressors, vacuum pumps, and gas storage units with factory-installed shipping skids; accessories packaged in factory-fabricated fiberboard containers; and pipe/tube with plastic end-cap protectors to prevent pipe-end damage and to eliminate dirt and moisture from entering interior of pipe/tube. B. Handle medical gas piping and equipment carefully to avoid damage to components, enclosures and finishes. Do not install damaged equipment; replace and return damaged units to equipment manufacturer. C. Store medical gas piping and equipment indoors and protect from weather and construction traffic. PART 2 - PRODUCTS 2.1 ACCEPTABLE MANUFACTURERS: A. Manufacturer: Subject to compliance with requirements, provide medical gas systems products by one of the following: 1. Medical Gas Equipment and Accessories: a. Chemetron Medical Div.; Allied Healthcare Products, Inc. b. Hill Rom/Medeas c. Beacon 2.2 MATERIALS AND PRODUCTS: A. General: Provide piping materials and factory-fabricated piping products of sizes, types, pressure ratings, temperature ratings, and capacities as indicated. 2.3 BASIC IDENTIFICATION: A. General: Provide identification complying with Division 23 05 53 section "Mechanical Identification", and NFPA 99. 2.4 BASIC PIPES AND PIPE FITTINGS: A. Medical Gas Piping: All above and below grade pipe for oxygen, nitrous oxide, nitrogen, vacuum and medical compressed air shall be minimum '/2" (3/4"for vacuum)Type K or L copper tubing (ASTM B819), hard drawn, seamless copper tubing, except that"pigtails" of not less than 3/8" OD for positive pressure gasses, 1/2" OD for vacuum, soft annealed tubing, not exceeding 8inches, may be used at outlets. Pipe shall be factory prewashed, oxygen clean grade, capped and labeled by pipe supplier and delivered sealed to the job site. 13026.01 /Vail Valley Medical 226000 -2 GAS AND VACUUM SYSTEMS FOR Center Cath Lab LABORATORY AND HEALTHCARE FACILITIES CCD-2 18 SEPTEMBER 2014 B. All fittings used for connecting copper tubing shall be wrought copper brazing fittings complying with MSS SP-73, suitable for brazed connections and especially prepared by the manufacturer for oxygen service. C. All joints in the piping shall be made with copper-phosphorus-silver brazing alloy with 15percent silver content, BcuP-5, without flux, melting range 1190-1480deg F. 2.5 BASIC PIPING SPECIALTIES: A. General: Provide piping specialties complying with Division 23 Section 23 05 18 "Piping Specialties." 2.6 BASIC SUPPORTS AND ANCHORS: A. General: Provide supports and anchors, complying with Division 23, Section 230529 "Supports and Anchors", in accordance with the following listing: 1. Extension split pipe clamp, copper plated, hinged or 2- bolt for pipe support from any substrate. 2.7 IN-LINE SHUTOFF VALVES: A. Shutoff Valves: Provide medical gas (3 piece) shutoff valves, bronze-body, double seal, full flow, union ball type, with seat seals and stem seals. Design so quarter turn of lever-type valves handle is maximum travel between open and closed positions. Design for working pressure of 300 psi minimum. Provide valves with color-coded gas identification labels. B. In line shutoff valves intended for use to isolate existing systems for piping maintenance or to extend to new piping systems are permitted. These valves shall be located in a secure area and locked open and labeled in accordance with NFPA 99 as follows: 1. Caution - (name of medical gas)Valve 2. Do Not Close Except in Emergency 3. This Valve Controls Supply to (area served) 4. Where valve is for future, down stream piping shall be closed with brazed cap. 2.8 MEDICAL GAS EQUIPMENT AND ACCESSORIES: A. General: Provide factory-fabricated medical gas accessories of sizes, types, ratings and capacities indicated. Where type is not indicated, provide components and equipment complying with NFPA 99, and as determined by Installer to comply with installation requirements. B. Zone Valves and Valve Boxes: 1. All valves shall be specifically designed for oxygen, vacuum, nitrogen, oil free air, or nitrous oxide service and shall conform in all particulars to NFPA 99. All valves shall be 3 piece ball type, with double 0-ring stem seal, rated at not less than 300 psig, actuated from full "ON"to full "OFF" by 90 degree turn of valve handle. Provide valves with color- coded gas service identification on each valve handle. Ball valves shall be Chemetron Catalog No. 77-03, 77-01 or 77-04 Series or approved equivalent. 2. Zone valve boxes shall be constructed of 18 gauge sheet steel with air dried lacquer finish. The cover frame shall be made of anodized aluminum and attached to the box by concealed 1-1/2 inch (38 mm) screws. The frame assembly shall be capable of adjusting for variances in wall thickness up to one inch. The frame assembly shall contain an 13026.01 /Vail Valley Medical 226000 - 3 GAS AND VACUUM SYSTEMS FOR Center Cath Lab LABORATORY AND HEALTHCARE FACILITIES CCD-2 18 SEPTEMBER 2014 easily removed cover window with pull ring. The window shall conceal exposed piping and valves within the box and shall be labeled - "Caution - Medical Gas Shut-Off Valves - Close Only in Emergency". Clear viewing space shall be provided in the window to display the gas service, the area controlled by the valve, and pressure gauges on units so equipped. 3. Multiple gas valving shall be accomplished by stacking zone valve boxes vertically. 4. Placement of the valve within the zone valve box shall be such that the removable window cannot be replaced when any valve is closed. Factory installed type K copper pipe extensions shall extend three inches outside the valve box. Design of the valve box shall be such that valves may be removed prior to brazing, without disassembly of the box, to permit field rearrangement of valves if necessary. Valves shall be 3 piece ball type, cleaned for oxygen service, supplied with capped ends. 5. Zone valve assemblies shall include 1-1/2inch pressure gauges reading 0-100 psig for oxygen, nitrous oxide, air and other 60 psi working pressure gases; 0-300 psi for nitrogen, and 0-30inch Hg for vacuum or evacuation vacuum. The gauge port shall be equipped with removable plug for pressure testing prior to final assembly of gauge. 6. All zone valve box assemblies shall read pressure downstream and vacuum upstream of the valve per NFPA 99. Valves shall be piped left to right. 7. Zone valve boxes shall be Chemetron 77-80 Series, 0- 300 psig or approved equivalent. C. Station Outlets 1. Wall Outlet Stations: Medical gas outlet stations shall be Chemetron, 500 Series, modular, Quick-Connect type or approved equivalent. Modular outlet stations shall be field assembled with sequences and services indicated on the plans. Centerline spacing of multiple outlets shall be 5 inches minimum. a. Outlet station for medical gases shall have a stainless steel face plate mounted on a chrome-plated, zinc, die- cast cover plate. The cover plate assembly shall con- tain the quick-connect latch release mechanism, indexing pins for safety keying the gas-specific cover plate to the appropriate rough-in box, and color-coded gas ser- vice identification. The safety-keying index pins shall be permanently captured between the cover plate and latch assembly. Designs with index pins molded in plastic will not be acceptable. b. The latch mechanism shall be designed for one-handed, single thrust mounting and one-handed finger tip release of secondary equipment. The outlet stations shall be capable of supporting common secondary equipment, including suction regulator and half-gallon collection bottle, without the use of slide brackets. c. The cover plate shall attach to the primary valve assembly. The primary valve shall be threaded into the rough-in box separately from the cover plate to facilitate leak-testing around the valve. Designs which prevent this test will not be acceptable. The primary valve body shall be made of brass and shall be adjustable to compensate for variation in plaster thickness. Provide an 0-ring within the valve to seal mating adaptor plugs. Future replacement of this 0-ring shall not require disassembly of the cover plate. The primary valve poppet shall be self-sealing in service, requiring no dust cap or cover. d. The rough-in box shall be made of corrosion resistant, zinc plated, sheet steel with provisions for field- ganging, by the installer. Provide two, factory- started, slotted, hex-head screws and fasteners with each rough-in box. Installer may gang rough-in boxes using holes provided for 1/8inch diameter pop rivets. e. Each rough-in box shall contain a base and tube assembly consisting of a Type K copper pigtail, flared to accept 1/4" ID, 3/8inch OD supply line for pressure gases, 2/8 inch ID, 1/2" OD for vacuum, brass block and base housing a secondary check valve per NFPA 99 (not required in vacuum), primary valve 0-ring seal, check valve deflator spring (except vacuum), pressure testing cap plug, and plaster 13026.01 /Vail Valley Medical 226000 -4 GAS AND VACUUM SYSTEMS FOR Center Cath Lab LABORATORY AND HEALTHCARE FACILITIES CCD-2 18 SEPTEMBER 2014 shield. The copper inlet tube shall be capable of rotating 360 degrees to adjust for field piping conditions. f. The secondary check valve shall be fully automatic and self-sealing upon removal of the primary valve. The primary valve seal shall be field replaceable WITHOUT shutting off gas supply to the outlet station. Designs that preclude servicing the primary valve seal in this manner will not be accepted. g. Medical gas outlets shall be cleaned for oxygen service in accordance with CGA Pamphlet G-4.1. The assembly shall be capped and internal parts poly-bagged for shipment. The outlet assembly shall bear the label of listing under Re-examination Service of Underwriter's Laboratory. h. Before installation, refer to Installation Instructions and familiarize all personnel with proper installation techniques and safe-guards per NFPA 99. i. Outlets shall be located as indicated on plans, 60 inches from finished floor unless otherwise indicated on the architectural drawings. j. Provide matching slide bracket where shown on architectural drawings. 2. Ceiling Outlet Stations: a. Ceiling Outlet Stations: Medical gas ceiling outlet stations shall be Chemetron, 560 Series, modular, D.I.S.S. type or approved equivalent. Modular outlet stations shall be field assembled with sequences and services indicated on the plans. Centerline spacing of multiple outlets shall be 5 inches minimum. b. Outlet station for medical gases shall have a stainless steel face plate mounted on a chrome-plated, zinc, die- cast cover plate. The cover plate assembly shall con- tain indexing pins for safety keying the gas-specific cover plate to the appropriate rough-in box, and color-coded gas service identification. The safety-keying index pins shall be permanently captured between the cover plate and latch assembly. Designs with index pins molded in plastic will not be acceptable. c. The outlet stations shall be capable of supporting common secondary equipment, including suction regulator and half-gallon collection bottle, without the use of slide brackets. d. The cover plate shall attach to the primary valve assembly. The primary valve shall be independently safety keyed and shall be threaded into the rough-in box separately from the cover plate to facilitate leak-testing around the valve. Designs which prevent this test will not be acceptable. The primary valve body shall be made of brass, shall contain a poppet which is self sealing in service, and shall be adjustable to compensate for variation in plaster thickness. e. The rough-in box shall be made of corrosion resistant, zinc plated, sheet steel with provisions for field- ganging, by the installer. Provide two, factory- started, slotted, hex-head screws and fasteners with each rough-in box. Installer may gang rough-in boxes using holes provided for 1/8" diameter pop rivets. f. Each rough-in box shall contain a base and tube assembly consisting of a Type K copper pigtail, flared to accept 1/4" ID, 3/8inch OD supply line for pressure gases, 3/8 inch ID, 1/2 inch OD for vacuum, brass block and base housing a secondary check valve per NFPA 99 (not required in vacuum), primary valve 0-ring seal, check valve deflator spring (except vacuum), pressure testing cap plug, and plaster shield. The copper inlet tube shall be capable of rotating 360 degrees to adjust for field piping conditions. g. The secondary check valve shall be fully automatic and self-sealing upon removal of the primary valve. The primary valve seal shall be field replaceable WITHOUT shutting off gas supply to the outlet station. Designs that preclude servicing the primary valve seal in this manner will not be accepted. h. Medical gas outlets shall be cleaned for oxygen service in accordance with CGA Pamphlet G-4.1. The assembly shall be capped and internal parts poly-bagged for shipment. The outlet assembly shall bear the label of listing under Re-examination Service of Underwriter's Laboratory. 13026.01 /Vail Valley Medical 226000 - 5 GAS AND VACUUM SYSTEMS FOR Center Cath Lab LABORATORY AND HEALTHCARE FACILITIES CCD-2 18 SEPTEMBER 2014 i. Before installation, refer to Installation Instructions and familiarize all personnel with proper installation techniques and safe-guards per NFPA 99. 3. Ceiling Dispensing Systems: a. Ceiling dispensing system outlets shall consist of hose reels recessed above the finished ceiling and contained in boxes. Hose reels shall be capable of retracting 18 foot lengths of conductive, color coded medical gas hose and 20 foot lengths of 16-3 wire cable. Medical gas hoses shall terminate with a female quick-connect coupler. Electric wire cable shall terminate with a suitable receptacle. Reels shall have stainless steel face plates with satin finish. Openings shall be equipped with Teflon grommets to reduce hose wear. b. Working parts of the entire assembly shall be easily accessible for servicing. Each service reel shall receive its gas supply through a complete outlet station, conforming to CGA/DISS thread specifications. Supply connections to the reels shall be equipped with fail-safe swivel joints, leak-proof and frictionless. Each reel for each service shall operate independently of any other reel. c. Hose reels shall be arranged as follows: 1) Two (2) boxes 12"x 24" placed side-by-side. One of these boxes shall contain reels for nitrous oxide, nitrogen, oxygen and vacuum. One-half of the adjacent box shall contain two (2) electric outlets. The other one-half shall be blank. 4. Manual Retractable Ceiling Mounted Service Columns: a. Retractable ceiling columns shall be constructed of 18 gauge stainless steel. Bottom plate shall be 14 gauge stainless steel with welded seam, ground smooth for seamless appearance with No. 4 satin finish. D.I.S.S. medical gas pipeline fittings will be furnished in the structural mounting plate; internal flexible hoses shall be furnished in the ceiling column for final connection between the mounting plate and installed medical gas outlets. Outlet stations shall be Chemetron (NCG) type and style, Quick-Connect. b. The column shall incorporate a constant force spring mechanism that will provide a power-assist for retraction and maximum extension of up to 18 inches. It shall have a spring-loaded friction brake that maintains the brake in locked position to avoid unwanted movement until intentionally unlocked with a quarter turn of the smooth surface, closed loop handle located on the bottom of the column. The column shall also contain (2) 3 inch stabilizing rollers in each of 4 corners, located in the retracting shell to assure smooth retraction and extension. Rollers shall be secured by stainless steel brackets welded to the retracting shell. c. The Mechanical Contractor shall cooperate with supervising Architect and other trades in arranging exact locations in the ceiling to the end that there shall be no conflict with services provided by ceiling columns and other services specified in the same general area. d. Ceiling columns shall be Chemetron Catalog No. 83 Series or approved equivalent. 2.9 ALARM SYSTEMS: A. The Mechanical Contractor shall install an alarm system for the special piping systems specified herein and for the locations as indicated on drawings. B. Area Alarm Panels: (AAP) 13026.01 /Vail Valley Medical 226000 -6 GAS AND VACUUM SYSTEMS FOR Center Cath Lab LABORATORY AND HEALTHCARE FACILITIES CCD-2 18 SEPTEMBER 2014 1. Area alarm panels shall be designed to meet the requirements of NFPA Standard 99. Area alarms shall be UL listed as an assembly and shall include all necessary gauges, factory wiring, transformers and circuitry requiring only 115 or 230 volt primary power. Internal voltage shall be stepped down to 12 volt closed, control circuit power. 2. Area alarm panels shall be modular in design and shall include a LED (Light Emitting Diodes)for normal/abnormal conditions and a LCD (Liquid Crystal Display)to continuously display actual pressure numerically for each gas. 3. The control module shall incorporate a test switch, an alarm silence switch and a LED to indicate the status of the unit. 4. Each module shall have a quick-disconnect locking type electrical terminal for servicing without shutting down the system. 5. Transducers for each gas or vacuum shall be remotely mounted directly on the medical gas line by means of a quick connect fitting. Each transducer gauge shall be serial numbered to its matching alarm module. Each module shall be factory calibrated with its transducer gauge before shipping to job site. 6. The master circuit board shall have a four fused secondary to insure against total alarm failure if one fuse is blown. It shall also contain dual transformers and selector switch to field select either 230 or 115 volt primary service. A detachable fuse clip on the primary side shall be included to insure that power is disrupted when the transformer cover is removed. 7. The alarm audio tone shall consist of 4 timing signals that amplify and frequency modulate the audible sound. The audio signal may be canceled only by the alarm silence button or fault correction. 8. Digital area alarm panels shall be: a. Chemetron Catalog No. 74-14-2000 Series or approved equivalent for the specific gases shown on drawings. C. The Division 26 Contractor shall provide necessary 115V, 24V, AC wiring for the operation of "Operating" and "Emergency" alarms. 1. All signals shall be flush-mounted, as indicated, with facility for job site identification, and shall incorporate: a. Visual indicator of circuit energization. b. Audible buzzer recording of all signal impulses. c. Visual illuminated identity of all signal impulses. d. Silencing of audible buzzer but not allowing cancellation of visual identity until situation has been corrected. e. Ability to receive and properly record by audible buzzer of any combination of sequential signal. f. The signal panel shall be equipped with a "TEST" button which shall actuate for test, all visual and audible alarms. g. The panel shall be of modular construction, facilitating service and maintenance. D. Similar signal wiring shall be supplied, to the maximum extent possible combined under same cover, for nitrous oxide (changeover/abnormal), compressed air(abnormal and dew point alarm), nitrogen (changeover/abnormal), and vacuum (abnormal)with signal locations as shown on the plans. 2.10 BULK SUPPLY UNITS: A. Nitrous Oxide System: 1. Supply Unit: Shall consist of[] cylinders, divided into even units of service and reserve. 13026.01 /Vail Valley Medical 226000 - 7 GAS AND VACUUM SYSTEMS FOR Center Cath Lab LABORATORY AND HEALTHCARE FACILITIES CCD-2 18 SEPTEMBER 2014 2. By reason of refrigerant capacity of nitrous oxide, the manifold and control unit shall incorporate large lumen orifice design to preclude "snow" build up in period of high demand. Regulators shall have a flow capacity of not less than 2500 cu. feet per hour at 800 lbs. inlet, 50 lbs. outlet. 3. The manifold control shall be designed for self-shifting to reserve bank on exhaustion of service bank. The control shall incorporate pressure switches for the purpose of actuating designated signal systems when service bank is exhausted. Pressure drop at change will not be accepted for this installation. The manifold shall bear the label of re- approval under re-examination service of the Underwriter's Laboratory as an assembly. 4. The manifold control unit shall be enclosed in a cabinet for indoor installation and shall be Chemetron Catalog No. 86-16-[ ] or approved equivalent. 5. Outlet Stations: Nitrous oxide outlet stations shall be of type identical with specification under oxygen system, and safety-keyed to prevent interchange of secondary equipment. 6. Zone and Section Valves: Nitrous oxide distribution system shall be valved similarly as the oxygen system previously specified. 7. Alarm System: The alarm signaling depleting or switching of the nitrous oxide cylinder bank, connected to pressure switches incorporated with the specified nitrous oxide supply unit shall be connected to the master alarm panel. PART 3 - EXECUTION 3.1 INSPECTION: A. Examine areas and conditions under which medical gas systems and equipment are to be installed. Do not proceed with work until unsatisfactory conditions have been corrected in manner acceptable to Installer. 3.2 INSTALLATION OF BASIC IDENTIFICATION: A. Install medical gas piping signs on piping in accordance with NFPA 99 requirements. 3.3 INSTALLATION OF MEDICAL GAS PIPING: A. The Contractor shall furnish all labor, materials, equipment and services necessary to install a complete distribution system for oxygen, nitrous oxide, nitrogen, medical compressed air and vacuum and to perform all required "progresses" and final tests. B. The entire medical gas system, or major sections of large systems, shall be completely installed and pressure tested prior to concealing within walls, ceiling or chases. C. The Contractor shall be responsible for furnishing and installing all material and equipment listed in this specification and shown on the construction drawings, including piping, pipe fittings, pipe connectors and all related accessories. D. The Contractor shall be responsible for final testing of all special piping systems as required by this specification and those required to comply with all local and state health and hospital codes and ordinances. E. Medical gas materials and tools shall be kept separate from all other materials and tools. F. Piping shall not be cleaned in the field, except where pipe ends have become contaminated. If required, wash in hot solution of sodium carbonate or trisodium phosphate mixed in proportion of 1-lb. to 3 gal. of water. 13026.01 /Vail Valley Medical 226000 - 8 GAS AND VACUUM SYSTEMS FOR Center Cath Lab LABORATORY AND HEALTHCARE FACILITIES CCD-2 18 SEPTEMBER 2014 THE USE OF ORGANIC SOLVENTS, FOR EXAMPLE, CARBON TETRACHLORIDE, IS PROHIBITED G. Scrubbing shall be employed where necessary to ensure complete cleaning. After washing, the material shall be rinsed thoroughly in clean hot water. After cleaning, particular care shall be exercised in the storage and handling of all pipe and fittings. Pipe and fittings shall be temporarily capped or plugged to prevent recontamination before final assembly. Tools used in cutting or reaming shall be kept free from oil and grease. Where such contamination has occurred, the items affected shall be rewashed and rinsed. Do not use steel wool to mechanically clean fittings or tubing. Wipe joints with a clean white cloth prior to joining piping. During brazing of medical gas systems the piping shall be continuously purged with dry nitrogen to avoid oxidation of the inside of the tubing. Braze piping within one hour of being mechanically cleaned. H. Braze piping joints and connections unless otherwise indicated. Do not use flux. I. Protect buried gas piping against freezing and corrosion with underground piping insulation and corrosion-protective coating. Underground piping shall be installed in a continuous enclosure. The enclosure to be split or otherwise to provide access to joints for testing. Piping shall be below frost line or minimum 36 inch bury. Provide continuous tape marker immediately above buried pipe. J. After installation of piping, but prior to installation of outlet valves, blow lines clear with Grade "D" oil-free dry air or nitrogen. K. Oxygen pipelines installed in combustible partitions shall be protected against physical damage by installation within pipe or conduit. Openings for pipelines installed in concealed spaces shall be fire-stopped with construction having a fire resistance equal to or greater than the original construction. L. Oxygen supply line may be run in chases with other service piping, but the oxygen lines must be so located as to avoid contact with steam or hot water lines. M. Medical gas piping systems shall not be used as a grounding electrode. 3.4 INSTALLATION OF SUPPORTS AND ANCHORS: A. Install supports and anchors, in accordance with Division 23, Section 23 05 29, "Supports and Anchors". 3.5 INSTALLATION OF VALVES: A. Shutoff Valves: Provide shutoff valves where indicated, and in accordance with NFPA 99. B. Valve Boxes: Where indicated, provide valve boxes with frangible or removable windows, large enough to permit manual operation of valves, and labeled in accordance with NFPA 99. C. Main Shutoff Valves: Where indicated, provide shutoff valve down stream of source valve on each main supply line, locate to be accessible in emergency. 3.6 INSTALLATION OF EQUIPMENT AND ACCESSORIES: A. Install medical gas equipment and accessories where indicated, in accordance with applicable NFPA standards, with equipment manufacturer's written instructions, and with recognized industry practices, to ensure that medical gas equipment and accessories comply with requirements and serve intended purposes. 13026.01 /Vail Valley Medical 226000 - 9 GAS AND VACUUM SYSTEMS FOR Center Cath Lab LABORATORY AND HEALTHCARE FACILITIES CCD-2 18 SEPTEMBER 2014 B. Coordinate with other work including plumbing, as necessary to interface installation of medical gas piping and equipment with other work. C. Air Compressor Intakes: Install air compressor intakes and vacuum pump exhausts as indicated, and in manner to ensure that vacuum pump exhaust will not contaminate air compressor intake nor HVAC ventilation system. D. Support: Install equipment on 4inches high reinforced concrete pads, 4inches larger on each side than equipment base. Cast anchor bolt inserts into pad. E. Electrical Wiring: Install electrical devices furnished by manufacturer but not specified to be factory-mounted. Furnish copy of manufacturer's wiring diagram submittal to Electrical Installer. 1. Verify that electrical wiring installation is in accordance with manufacturer's submittal and installation requirements of Division-16 sections. Do not proceed with equipment start-up until wiring installation is acceptable to equipment installer. F. Valve Boxes shall be installed with bottom of lowest unit at 60 inches above floor. Do not exceed 6'-6"to highest valve handle. G. Ceiling dispensing boxes and reels and ceiling mounted service columns shall be provided by the Mechanical Contractor and installed by the General Contractor. Mechanical Contractor shall make all medical gas and vacuum piping connections. Electrical Contractor shall install all wiring and make electrical connections. 3.7 EQUIPMENT CONNECTIONS: A. General: Connect medical gas systems to mechanical equipment as indicated, and comply with equipment manufacturer's instructions where not otherwise indicated. 3.8 FIELD QUALITY CONTROL: A. Test medical gas piping, including pressure, cross connection, and final testing in accordance with NFPA 99. Indicate in writing to Owner that required tests have been successfully conducted and permanent records of tests maintained. B. Test medical gas alarms for proper operation at high pressure, low pressure, and gas supply status. 3.9 TESTS FOR MEDICAL GAS PIPING: A. Pressure test in strict accordance with NFPA 99 will be required. Specific attention is directed to absolute prohibition of the use of oil pumped compressed air or oil pumped nitrogen and the prohibition of the use of hydrostatic test. Testing medium shall be WATER PUMPED COMPRESSED AIR or VAPOR PUMPED NITROGEN. Cylinder shall be so labeled. B. A 24-hour standing pressure test with oil free (water pumped) nitrogen or air at one and one-half times maximum working pressure, but in no case less than 150 psi., shall be made prior to "trimming" medical gas outlet station valves to check the completeness of previous joint tests. After trimming out the medical gas outlet stations, the system shall be tested for 24 hours at 20 percent above working pressure. After completion of the final standing pressure test, the system shall be thoroughly flushed with the gas to be used in the system to assure the removal of all nitrogen or air. 13026.01 /Vail Valley Medical 226000 - 10 GAS AND VACUUM SYSTEMS FOR Center Cath Lab LABORATORY AND HEALTHCARE FACILITIES CCD-2 18 SEPTEMBER 2014 C. After completion of final testing and flushing of the piping system, the medical gas system shall be tested in accordance with NFPA 99 by the medical gas equipment supplier, in the presence of an authorized representative of the Owner. The medical gas equipment supplier shall furnish written certification to the Owner that the system has been so tested and is free of crossed-connections. Cost of gases required for testing shall be borne by the Mechanical Contractor. Further, the cost of subsequent tests required to re-check initial errors shall be the responsibility of this contractor. D. When all medical gas piping systems have been tested as specified above, the source of test gas shall be disconnected and the proper gas source of supply connect as specified above, the source of test gas shall be disconnected and the proper gas source of supply connected to each respective system. Following this connection and pressurization, all outlets shall be opened in a progressive order, starting nearest the source and completing the process of purge flushing at the outlet farthest from the source. Gas shall be permitted to flow from each outlet until each system is purged of test gas used during previous tests. 3.10 MEDICAL GAS SYSTEMS VERIFICATION & CERTIFICATION: A. General: Evaluate and certify medical gas systems, including source equipment, valving, alarms, and station outlets, for mechanical and therapeutic function. 1. Provide certification by Agency independent of facility, system Installer, Contractor, and Suppliers. 2. Mechanical and Therapeutic Function: As defined in NFPA 99 and CGA P2.1. B. Provide full documentation of the following: 1. That medical gas systems as constructed, follow guidelines of NFPA 99, regarding placement and applicability of valves, alarms, and source equipment. 2. That no cross connections exist in pipeline as constructed. 3. Include in documentation, examination of outflow of each station outlet, following mechanical cross connection procedure as specified by NFPA 99, Additionally, examine each system outflow with appropriate analyzer and document concentrations. Include Medical Gas and Vacuum systems in mechanical examination. 4. Where laboratory systems are treated as separate systems, perform cross connection tests to document their separation from medical systems as required by NFPA 99. 5. That station outlets are delivering gas at pressure and flow consistent with needs indicated, but in no case to be below CGA or NFPA guidelines. 6. That pipeline is free of debris, including liquid. 7. That station outlets are functional. 8. That delivered gas is as pure as required by applicable CGA specifications for breathing gas. Take samples from such station outlets as agreed by facility and agency. In no case shall number of samplings be fewer than two, one from source and one from such station outlets as will provide gas has traversed greatest length of pipeline. Evaluate samples against CGA requirements for human use and compare to one another. 9. That reserve source equipment and its control equipment is in place and is operational. 10. That valves are functional. Document control zones without regard to plans. Compare this documentation to as-built plans, and report discrepancies between actual installation and plans to facility. 11. That alarms are functioning and are set in accordance with NFPA 99. Document and compare surveillance areas of each to record drawings, and report discrepancies between actual installation and drawings to Architect/Engineer. 12. That medical air is dry. Examination shall consist of dewpoint taken at source and most distant station outlet of each lateral branch. Document temperatures and pressures affecting dryness. 13026.01 /Vail Valley Medical 226000 - 11 GAS AND VACUUM SYSTEMS FOR Center Cath Lab LABORATORY AND HEALTHCARE FACILITIES CCD-2 18 SEPTEMBER 2014 END OF SECTION 226000 13026.01 /Vail Valley Medical 226000 - 12 GAS AND VACUUM SYSTEMS FOR Center Cath Lab LABORATORY AND HEALTHCARE FACILITIES