Second National Quality Improvement Forum on Health CareNovember 21- 22, 2012 Mlimani City Conference Centre, Dar es Salaam, TANZANIA Status: Mrs First Name: gladness Last Name: salema Institution: UNIVERSITY OF DAR ES SALAAM Address: BOX 35046 Zip: City: dar es sallam Country: Tanzania Phone: 0713243661 Fax: E-mail: firstname.lastname@example.org Preference of Presentation: oral A
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Section 15710A. The work required under this section includes all work necessary for the installation of a heating- B. The work of this section is subject to the requirements of the Mechanical General Provision and A. Grooved joint couplings and fittings shall be shown on drawings and product submittals, and be specifically identified with the applicable Victaulic style or series number. A. Basic Material and Methods, Section 15050. PART 2 - PRODUCTS 2.1 CIRCULATING WATER PIPING SYSTEM ABOVE GRADE (HOT OR CHILLED WATER) A. Circulating water piping for both chilled and hot water in sizes up to 2-1/2” shall be ASTM 088-72 Type L copper fittings with solder joints. Piping 3” and larger shall be ASTM A-53 Schedule 40 black steel with grooved joint couplings and fittings or steel welding fittings. Runouts to room units may be soft copper. A. Condensate drains from room air handling units shall be type ‘M’ copper. A. Miscellaneous water supply piping, such as makeup piping to expansion tank, tower tank, full connection to circulating water system, etc., shall be Type “L” copper as specified for hot and chilled water piping. A. All circulating water specialties including relief valves, reducing valves, 150 pounds ASME Code compression tank with proper size airtrol fittings and vent tube, rolaritrols, etc., shall be as indicated on the drawings and required. The specialties shall be Bell and Gossett, or approved substitute. The specialties shall be installed according to the manufacturer’s recommendations so as to eliminate all air in the circulating system. A. The electric heating cable shall be spirally wrapped around the circulating lines and makeup water lines outside the building. The application of the heat tape shall be adequate for minus 10°F. and shall be complete with all controls set to come on at approximately 35°F. the heat tap shall be UL listed. 2.6 STRAINERS, FLEXIBLE COUPLINGS & SAFETY VALVES A. Strainers shall be iron body with Monel Metal Screen and shall be Crane NO. 998-1/2 or 989-1/2 or approved substitute. Each strainer shall be installed with blow-off valve. B. Flexible coupling shall be braided stainless steel type good for not less than 125 pounds work pressure and 250°F. operating temperature and be Keflex KSSPC, or approved substitute with control rods. C. Safety valves for the hot water circulating system shall be Crane 3/4" NO. 2606 or approved 2.7 VALVES FOR HOT AND CHILLED WATER CIRCULATING SYSTEM A. Valves for cut off in both hot and chilled water circulating systems shall be ball or butterfly type. B. Ball valves shall be used in sizes up to and including 2” size. Valves shall be 3-piece bronze, full port designed for service without removing from line and have stainless steel stem with PTFE seats. Valves shall be Milwaukee valve 30 BSOF- 02 for 200 psi service. Ball valves used in stainless steel piping sizes up to and including 2” size shall be 2-piece forged brass, standard port designed for service without removing from line and have brass ball and stem, TFE seats and stem washer, with Vic Press 304™ ends. Victaulic Style 589, for 300 psi service. Ball valves used in grooved piping systems sizes 1-1/2” through 6” shall be 2-piece ductile iron, standard port designed for service without removing from line and have chrome-plated carbon steel ball and stem, TFE seats, grooved ends. Victaulic Series 726 for 800 psi service. C. Valves 2 ½” to 12” shall be Milwaukee Valve C Series 14” and 24” Milwaukee Valve M Series or approved substitute with 150 psi bubble-tight shutoff. Bronze Disc, EPDM Seat, lug type, multi-position handle and one-piece stainless steel stem. Valves 8” and larger will be weatherproof gear operators suitable for exposed service, with handwheel. 8” and above overhead valves without motor operators shall be chain operated. D. Check valves in chilled and hot water circulating piping shall be a compact silent operating, non- slam type. The valve shall be designed to open and close at approximately 1 foot differential pressure. The valve shall be Bell and Gossett Model NS. E. Balancing valves for hot and chilled water lines ½” through 4” shall be Bell and Gossett circuit setter Model CB capable of 125 psi working pressure. F. Combination balancing and cutoff valves for water lines ½” through 2” shall be Victaulic/TA Hydronics Series 787 or Armstrong Series CBV. Valves shall be capable of flow measurement, flow balancing, capable of leakproof shut-off, and have memory feature. G. Combination balancing cut off valves for water lines 2 ½” through 6” shall be Victaulic/TA Hyronics Series 789 or Armstrong Series CBC, capable of 300 psi working pressure. H. Triple duty valves may be substituted for a cutoff valve, check valve, and balancing valve where noted on drawings. Valve shall be capable of all three functions and be designed for 175 psi working pressure, and be Bell and Gossett Model 3D and 3DS or approved substitute. Tri-Service Valve Assembly: Combination shut-off, throttling and non-slam check valve. Vic®-300 MasterSeal™ butterfly valve assembled with Style 779 Venturi check and grooved joint couplings (style to be determined by system requirements), working pressures to 300 psi. Optional: Vic-Plug valve Series 377 assembled with Style 779 Venturi check, working pressures to 175 psi. (transition couplings Style 307 required for plug valve assembly). Memory stops standard. A. Perform all shop and fields welding work using certified ASME Code Welder. Provide certification B. All welding shall conform to requirements of the ANSI Code for Pressure Piping, Section B31.1. C. In welded piping use only flanged joints for valves, and equipment. A. Use 95-5 solder alloys with past flux when joining copper to copper. B. Use silver solder when joining type “K” copper to copper, when joining refrigerant piping and C. The use of lead based copper is prohibited. Install manual air vents at all high points in piping. Connections between copper to ferrous pipe shall be made with dielectric unions. Connections of copper pipe to fittings shall be made with adaptors to provide break between copper and ferrous materials. A. Test all hydronic piping following installation, but before it is covered or connected to equipment. Furnish necessary labor, materials, and equipment for making test. All leaks disclosed by testing shall be reworked in approved manner and the leaking system shall then be retested until proven tight under pressure. Test all systems for water tightness as required by the authorities having jurisdiction. B. All hydronic piping shall be tested by applying a hydro-static pressure of not less than 100 pounds per square inch or 1 ½ time the working pressure, whichever is greater.
All appointments: 1.877.CIVA.NOW (1.877.248.2669) Referring physicians: PLEASE FAX TO 214.361.2153 civadallas.com Patient . Cardiovascular Diagnosis . Patient SSN . Patient Ph . Date of Birth . (Parent or guardian MUST accompany patients under 18 yrs. Please check which CIVA physician you are referring the patient to: [ ] Jack W. Spitzberg, MD, FACP, FACC, FCCC [ ] Charles B. Levin