1、12-09 22 61 13.74 - 1 SECTION 22 61 13.74 DENTAL COMPRESSED-AIR PIPING SPEC WRITER NOTES: 1. Delete between / - / if not applicable to project. Also delete any other item or paragraph not applicable in the section and renumber the paragraphs. 2. References to pressure in this section are gage pressu
2、re unless otherwise noted. 3. Edit for 140 psi system or 100 psi system. PART 1 - GENERAL 1.1 DESCRIPTION This section describes the requirements for central dental compressed air piping, including all necessary piping, fittings, valves, cabinets, outlets, / ceiling services, / gages. 1.2 RELATED WO
3、RK A. Section 07 84 00, FIRESTOPPING: Sealing around pipe penetrations to maintain the integrity of time rated construction. B. Section 07 92 00, JOINT SEALANTS: Sealing around pipe penetrations through the floor to prevent moisture migration. C. 05 13 41, SEISMIC RESTRAINT REQUIREMENTS FOR NON-STRU
4、CTURAL EQUIPMENT: Seismic Restraint. D. Section 22 05 11, COMMON WORK RESULTS FOR PLUMBING: General requirements and items common to more than one section of Division 22. E. Section 22 05 23, GENERAL-DUTY VALVES FOR PLUMBING PIPING: Exposed piping. F. Section 22 61 19.74, DENTAL COMPRESSED AIR EQUIP
5、MENT: Exposed piping. G. Section 22 63 00, GAS SYSTEMS FOR LABORATORY AND HEALTHCARE FACILITIES: Ceiling outlets, hose drops and valve cabinets. H. Section 23 05 41, NOISE AND VIBRATION CONTROL FOR HVAC PIPING AND EQUIPMENT. 1.3 QUALITY ASSURANCE A. Installer qualifications shall meet those qualific
6、ations stated in ASSE standard #6010. B. Medical Gas System Testing Organization: 1. The testing shall be conducted by a party technically competent and experienced in the field of medical gas pipeline testing. Such testing shall be performed by a party other than the installing contractor. Provided
7、 by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-12-09 22 61 13.74 - 2 2. The testing personnel shall be qualified according to ASSE standard #6020 for inspectors and ASSE Standard #6030 for verifiers. 3. Names of three projects where testing of medical gas s
8、ystems has been performed shall be submitted by the testing agency for review. The list of three references shall include the name of the project, names of such persons at that project who supervised the work for the project owner, or who accepted the report for the project owner, and a written stat
9、ement that the projects listed required work of similar scope to that set forth in this specification. 4. The testing agencys detailed procedure to be followed in the testing of this project shall be submitted. These procedures shall be in compliance with current NFPA and state adoption and shall in
10、clude details of the testing sequence, procedures for cross connection tests, outlet function tests, alarm tests, and purity tests, as required by NFPA 99. Data on test methods, types of equipment to be used, and calibration sources and method references for purity tests procedures shall be submitte
11、d. C. The installing contractor shall maintain as-built drawings of each completed phase for verification; and, shall provide the complete set at the time of final systems certification testing. As-built drawings are to be provided, and a copy of them on Auto-Cad version (2004) provided on compact d
12、isk 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 requirement. D. Certification documentation shall be provided prior to submitting the request
13、 for final inspection. The documentation shall include all test results, the names of individuals performing work for the testing agency on this project, detailed procedures followed for all tests, and a certification that all results of tests were within limits specified. E. Brazing process and ope
14、rators shall be qualified according to ASME Boiler and Pressure Vessel code: Section IX, “Welding and Brazing Qualifications,” or AWS B2.2, “Standard for Brazing Procedure and Performance Qualification. F. The electrical devices and accessories shall be listed and labeled as defined in NFPA 70, Arti
15、cle 100, by a testing agency and marked for its intended use. G. All work shall comply with NFPA 99, “Health Care Facilities” Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-12-09 22 61 13.74 - 3 1.4 SUBMITTAL A. Submit as one package in accordance w
16、ith Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES. B. Manufacturers Literature and Data: 1. Piping and fittings 2. Valves. 3. Outlets. /4. Ceiling services./ 5. Gages. 6. Switches (pressure). 7. Alarm components C. Station Outlets and Inlets: A letter shall be submitted from manufacture
17、r stating that outlets and inlets are designed, manufactured, and shall comply with NFPA 99. Outlets and inlets shall bear label of approval as assembly of Underwriters Laboratories, Inc. or Associated Factory Mutual Research Corporation. In lieu of above labels, certificate may be submitted by a na
18、tionally recognized independent testing laboratory, satisfactory to the Contracting Officer, certifying that materials, appliances and assemblies conform to published standards, including methods of tests, of above organizations. D. Certification: The completed systems shall be certified having been
19、 installed, tested, purged and analyzed in accordance with the requirements of this specification. E. Qualification data for the installer and testing agency/Verify shall be submitted. 1.5 APPLICABLE PUBLICATIONS A. The publications listed below form a part of this specification to the extent refere
20、nced. The publications are referenced in the test by the basic designation only. SPEC WRITER NOTE: Make material requirements agree with applicable requirements specified in the referenced Applicable Publications. Update and specify, in both, that which applies to the project. C. American National S
21、tandards Institute (ANSI): A13.1-07 . Scheme for the Identification of Piping Systems B16.3-98 . Malleable Iron Threaded Fittings Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-12-09 22 61 13.74 - 4 B16.22-01 (R 2005) . Wrought Copper and Copper All
22、oy Solder Joint Pressure Fittings B40.1-06 . Pressure Gauges and Gauge Attachment D. American Society for Testing and Materials (ASTM): A47-99 (R 2004) Standard Specification for Steel Sheet, Aluminum Coated, by the Hot Dip Process A53-07 . Standard Specification for Pipe, Steel, Black, and Hot Dipp
23、ed Zinc Coated, Welded and Seamless A536-84( R2004) Standard Specification for Ductile Iron Castings B819-00 (R 2006) . Standard Specification for Seamless Copper Tube for Medical Gas Systems E. American Society of Mechanical Engineers (ASME): Section IX-07 Welding and Brazing Qualifications F. Amer
24、ican Welding Society (AWS): AWS A5.8-04 (R 2004) . Specification for Filler Metals for Brazing and Braze Welding AWS B2.2-91 Standard for Brazing Procedure and Performance Qualification (Modified per NFPA 99) G. Compressed Gas Association (CGA): G-4.1-04 . Cleaning Equipment for Oxygen Service G-10.
25、1-04 Nitrogen, Commodity P-9-01 . Inert Gases Argon, Nitrogen and Helium V-1-03 . Standard for Compressed Gas Cylinder Valve Outlet and Inlet Connection V-5-05 Diameter Index Safety System (Non Interchangeable Low Pressure Connections for Medical Gas Applications) H. National Fire Protection Associa
26、tion (NFPA): 99-05 Health Care Facilities I. United States Pharmacopoeia XXI/National Formulary XVI (USP/NF). J. National Association of Architectural Metal Manufacturers (NAAMM): Metal Finishes Manual, Dated January 1988. K. Manufacturing Standardization Society: (MSS) MSS-SP-72-99 . Standard for B
27、all Valves with Flanged or Butt-Welding Ends for General Service MSS-SP-73-03 . Brazing Joints for Copper and Copper Alloy Pressure Fittings Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-12-09 22 61 13.74 - 5 MSS-SP-110-96 Ball Valves Threaded, Soc
28、ket Welding, Solder Joint, Grooved and Flared Ends L. American Society of Sanitary Engineering (ASSE): 6010 . Professional Standard for Medical Gas Systems Professional: Medical Gas Systems Installers 6020 . Professional Standard for Medical Gas Systems Professional: Medical Gas Systems Inspectors 6
29、030 . Professional Standard for Medical Gas Systems Professional: Medical Gas Systems Verifiers 1.6 PROJECT CONDITIONS A. Interruption of existing medical air systems shall not be made without the coordination of the Medical Center. The medical center shall be notified 14 days in advance of proposed
30、 interruption. The interruption shall not be made without the written permission from the Medical Center. PART 2 - PRODUCTS 2.1 PIPING A. Copper medical gas tube shall be type K or L, seamless, drawn temper meeting ASTM B819 that has been cleaned, purged, and sealed for medical gas service by the pi
31、pe manufacturer. Standard color markings “ACR/MED” shall be in green for Type K and in blue for type L tubing. B. Wrought copper fittings shall be solder joint, dimensions for brazed joints complying with ASME B16.22. C. Brazing filler Metals shall be BCuP series, copper-phosphorus allows for genera
32、l duty brazing conforming to AWS A5.8. C. Screw Joints shall be made with Degreased polytetrafluoroethylene (teflon) tape. D. Piping identification labels shall be applied in accordance with NFPA 99. Supplementary color identification shall be in accordance with CGA pamphlet C-9. E. Temperature and
33、pressure ratings of Memory metal couplings shall be not less than that of a brazed joint shall be permitted. The memory metal couplings shall be made of ASTM F 2063, nickel titanium, shape memory alloy, cleaned, purged, and sealed for medical gas service. Provided by IHSNot for ResaleNo reproduction
34、 or networking permitted without license from IHS-,-,-12-09 22 61 13.74 - 6 2.2 VALVES A Valves shall be cleaned purged, and bagged according to CGA G-4.1 for oxygen service. B. Ball: 1. Ball valves 100 millimeters or DN100 (4 inches) and smaller shall be full port, chrome plated brass with PTFE or
35、TGFE seats, lever type handle with locking device, blowout proof stem with PTFE or TFE seal and ends manufactured according to ASTM B 819 with copper tube extensions. The ball valve shall have a pressure rating of 2070 kPa (300 psig). C. Check: 1. Check valves 80 millimeters or DN80 (3 inches) and s
36、maller shall be spring loaded with ends manufactured according to ASTM B819 with copper tube extensions. The check valve shall have a pressure rating of 2070 kPa (300 psig). D. Zone Valves: 1. Zone valves shall be three-piece body, brass or bronze full port, chrome plated brass ball valve with gage
37、with PTFE or TGFE seats, lever type handle with locking device, blowout proof stem with PTFE or TFE seal and ends manufactured according to ASTM B 819 with copper tube extensions. The ball valve shall have a pressure rating of 2070 kPa (300 psig). 2.3 ZONE VALVE BOXES A. Zone Valve boxes shall be fo
38、rmed steel with anchors for recessed mounted and includes holes with grommets in the box sides for tubing extension protection. The zone valve box shall be of the size for single or multiple valves as indicated with pressure gages and space for manual operation of valves. B. The interior finish shal
39、l be factory applied white enamel. C. The cover plate shall be stainless steel with NAAMM AMP 503, No. 4 finish and frangible or removable windows. The valve box windows shall be clear or tinted transparent plastic with labeling that includes rooms served according to NFPA 99. 2.4 OUTLETS A. The out
40、let shall be for specific medical/dental compressed air pressure and service listed. Rough-in assemblies shall be included. Recessed units shall be provided unless indicated. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-12-09 22 61 13.74 - 7 B. Fi
41、nish assembly shall include primary check valve, double seals to prevent air leakage and cover plate with service label. C. Quick coupler service connections shall include a pressure outlet with non-interchangeable keyed indexing and constructed to permit one-handed connection and removal of equipme
42、nt using a positive locking ring that retains the equipment stem in valve during use. D. DISS service connection outlets shall comply with CGA V-5 with threaded indexing constructed to permit one handed connection and removal of equipment. 2.5 GAGES, PRESSURE A. Pressure gages used for testing purpo
43、ses shall be listed for dental compressed air. B. Pressure gages for line pressure use adjacent to source equipment shall be 115 millimeter (4-1/2 inch) diameter, accuracy to within 2%. The pressure range shall be twice the operating pressure. Dial graduations and figures shall be black on white bac
44、kground. Gage shall be cleaned and listed for oxygen use and marked “USE NO OIL”. The pressure gage shall comply with ANSI B40.1 and have a gage cock. , and marked “USE NO OIL“. Install with gage cock. C. For all services downstream of main shutoff valve, the pressure gages shall be manufactured exp
45、ressly for oxygen use but labeled for dental air service and marked “USE NO OIL“, 40 mm (1-1/2 inch) diameter gage with dial range 1-2050 kPa (1-300 psi). PART 3 EXECUTION 3.1 PREPERATION A. All dental air tube and fittings, valves, gages, and other components shall be of oil, grease, and other read
46、ily oxidizable materials as required according to CGA G-4.1, “Cleaning Equipment for Oxygen Service. B. All dental air tube and components shall be washed in hot, alkaline cleaner water solution of sodium carbonate or tri-sodium phosphate in proportion of .453 kg (one pound) of chemical to 11.3 lite
47、rs (three gallons) of water. All components shall be scrubbed and rinsed using new cleaning pads. 3.2 INSTALLATION A. Pipe, fitting, and component installation shall conform to NFPA 99. B. New pipe to existing pipe connections shall be connected with memory metal couplings. Provided by IHSNot for Re
48、saleNo reproduction or networking permitted without license from IHS-,-,-12-09 22 61 13.74 - 8 C. Dental air piping shall use either type L or K, copper medical gas tube, wrought copper fittings, and brazed joints. D. Section 22 05 11, COMMON WORK RESULTS FOR PLUMBING, shall be used for pipe penetra
49、tions and sleeves. E. Pipe installation shall comply with ASSE standard #6010. F. Pipes indicated to be exposed and piping in Mechanical rooms and utility areas shall be installed parallel or at right angles to building walls. G. Piping above ceilings shall be installed to allow for the removal of ceiling tiles. H. Air and drain piping shall be installed at a one percent slope. I
