UBC Technical Guidelines Section Edition Insulation of Tanks, Steam and Condensate Piping Page 1 of 6

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1 Page 1 of GENERAL 1.1 Related UBC Guidelines.1 Refer to Division 33 and Division 23 - Underground Steam and Condensate Piping.2 Refer to Division 23 - Steam and Condensate Piping Above Grade.3 Section District Hot Water Heating System 1.2 Co-ordination Requirements.1 Coordinate with UBC Building Operations - Technical s..2 Coordinate with other design disciplines. 1.3 Description.1 Insulation of tanks, steam and condensate piping. 1.4 Definitions.1 For purposes of this section:.1 CONCEALED - insulated mechanical services and equipment in hung ceilings and non-accessible chases and furred spaces..2 EXPOSED - will mean "not concealed" as defined herein. 2.0 MATERIALS AND DESIGN REQUIREMENTS 2.1 General.1 All components of insulation system to have maximum flame spread rating of 25 and maximum smoke developed rating of 50 in accordance with CAN4-S Materials to be tested in accordance with ASTM C Insulation systems shall be in accordance with the latest edition of the following standards unless specified:.1 ASTM C411 Test Method for Hot-Surface Performance of High-Temperature Thermal Insulation..2 CAN4-S102 Surface Burning Characteristics of Building Materials and Assemblies..3 ANSI/NFPA 90A Air Conditioning and Ventilating Systems and Installation..4 ANSI/NFPA 90B Warm Air Heating and Air Conditioning Systems..5 CGSB 51-GP-10M Thermal Insulation, Mineral Fiber, Block or Board, for Ducting, Machinery and Boilers..6 CGSB 51-GP-11M Thermal Insulation, Mineral Fiber, Blanket for Piping, Ducting, Machinery and Boilers..7 CGSB 51-GP-52M Vapor Barrier Jacket and Facing Material for Pipe, Duct and Equipment Thermal Insulation.

2 Page 2 of 6.8 CAN/CGSB-51.2 Thermal Insulation, Calcium Silicate, for Piping, Machinery and Boilers..9 CAN/CGSB Cement, Thermal Insulating and Finishing..10 CAN/CGSB Thermal Insulation, Flexible, Elastomeric, Unicellular, Sheet and Pipe Covering..11 CAN/CGSB Thermal Insulation, Mineral Fiber, Blanket for D.H.W. Heaters..12 ASTM C177 Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the Guarded-Hot-Plate Apparatus. 2.2 Mineral Fiber Blanket Hot Curved Surfaces 20 C To 400 C.1 CGSB 51-GP-11M, mineral fiber blanket. CAN/CGSB-51.65, for Domestic Hot Water Heaters..2 Thermal Conductivity "k" shall not exceed W/m. C at 24 C mean temperature when tested in accordance with ASTM C Applications and Thickness Hot water storage tanks Heat exchangers Flash tanks 2.3 Mineral Fiber Board Hot Flat Surfaces 20 to 400 C.1 CGSB 51-GP-10M, rigid mineral fiber board..2 Thermal Conductivity "k" shall not exceed W/m. C at 24 C mean temperature when tested in accordance with ASTM C Applications and Thickness Hot wells Steam Condensate 38 mm 2.4 Mineral Fiber Blanket Vapor Barrier Cold Curved Surfaces.1 CGSB 51-GP-11M, mineral fiber blanket; CGSB 51-GP-52M, vapor barrier..2 Thermal Conductivity "k" shall not exceed W/m. C at 24 C mean temperature when tested in accordance with ASTM C177.

3 Page 3 of 6.3 Applications and Thickness Cold storage tanks Chilled water expansion tanks Chillers 2.5 Flexible Sheet Elastomeric 40 to 95 C.1 CAN/CGSB-51.40, flexible elastomeric unicellular sheet covering..2 Applications and Thickness Chillers Chilled water storage tanks 2.6 Calcium Silicate Block 40 C to 400 C..1 CAN/CGSB-51.2, calcium silicate..2 Applications and Thickness Domestic hot water tanks Hot wells Convectors Boilers Breechings Generator exhaust muffler and exhaust pipe Steam 2-50 layers 2-50 layers 2-50 layers 2.7 Calcium Silicate Block or Sheet With Vapor Barrier.1 CAN/CGSB-51.2, calcium silicate; CGSB 51-GP-52M, vapor barrier..2 Applications and Thickness. Chillers Cold wells Pumps Cold water pressure tanks

4 Page 4 of 6.3 Make insulation removable with [0.6] mm thick aluminum alloy outer liner and quick release straps on following equipment: Pumps. 2.8 Foam Glass.1 Specify Foam Glass insulation with torch on jacket or calcium silicate insulation and wound PVC jacket piping conduit for direct bury steam and condensate piping. Thickness 4" (100 mm) for Steam, 2 1/2" (38 mm) for condensate. 2.9 Ricwill & Nova Piping Systems.1 Subject to Building Operations approval..2 Specify Ricwill and/or Nova piping systems for direct bury steam and condensate Powder Form Insulations.1 Specify powder form insulations only for repairs, 2" (800 mm) and smaller lines and services to temporary buildings. Dryotherm or equal Finishing Cemember to 450 C.1 CAN/CGSB Applications and Thickness Hot water storage tanks Boilers Breechings Heat exchanger Flash tanks Steam and condensate 2.12 Fastenings.1 Tape shall be self adhesive 100 mm wide..2 Contact adhesive shall be quick-setting..3 Lap seal adhesive shall be quick-setting for joints and lap sealing of vapor barriers..4 Adhesive for canvas shall be washable, for cementing canvas to equipment insulation..5 Steel wire shall be 1.3 mm diameter galvanized annealed..6 Stainless steel wire shall be 1.3 mm diameter, type Steel bands shall be 19 x 0.4 mm stainless steel Jackets.1 Material.1 Canvas where exposed. ULC listed plain weave cotton fabric at 200 g/m 2..1 Applications.1 Heat exchangers..2 Hot water storage tanks..3 Flash tanks.

5 Page 5 of 6.4 Hot wells..5 Cold water storage tanks..6 Hot water storage tanks..7 Boilers..8 Breechings..9 Diesel generators exhaust piping and mufflers..10 Steam and condensate piping..2 Material.1 ULC listed fire resistive, plain weave, cotton fabric, at 220 g/m2..1 Applications.1 Chillers..2 Boilers..3 Steam and Condensate..3 Material.1 Metal 0.6 mm thick aluminum alloy sheet, use only in areas subject to traffic or mechanical damage Removable Prefabricated Insulation and Enclosures.1 Application.1 Heat exchanger heads evaporator heads..2 Design.1 To permit periodic removal and replacement without damage to adjacent insulation..3 Insulation.1 Preformed to fit components..2 Thickness to match application..3 Chilled water systems: provide vapor barrier..4 Enclosure: aluminum 1.3 mm thick, or Fiberglas eave jacket with loose fiberglass. Insulation to be held in place with light weight mesh. 3.0 APPLICATION REQUIREMENTS 3.1 General.1 Apply insulation after all tests have been completed and approved by Engineer..2 Surface to be clean and dry during installation of insulation and finishes..3 If not specified herein, application to be to manufacturer's recommendations..4 Maintain uninterrupted integrity of vapor barrier..5 Apply half round high density insulation under supports and hangers, extending for 150 either side of hanger/support. 3.2 Installation.1 Install in accordance with ANSI/NFPA 90A and ANSI/NFPA 90B and BCICA Manual..2 Insulation supports where welding or bolting is permitted..1 Angle anchors shall be welded or bolted to equipment at lowest point of insulation. Thereafter, locate every 4.5 m vertically..2 Welded steel clips shall be 200 mm maximum on centers, but not less than 2 rows per side.

6 Page 6 of 6.3 Insulation.1 Multi-layered: staggered butt joints and expansion joints in insulation, secured with wire or bands at 400 mm on centre intervals..4 Expansion Joints in Insulation.1 Leave space in each layer at 7 m intervals..2 Pack space lightly with Type E-1 flexible mineral insulation..5 Insulation at bolts, studs, nuts, and instrumentation shall be beveled to permit removal without damage to insulation or finish..6 Fastenings.1 Secure insulation with stainless steel wire, steel bands at 900 mm on centre before application of finishing cement..7 Vapor barriers shall be adhered and sealed with vapor seal adhesive..8 Finishes.1 Cement: apply over insulation in 2-6 mm thick layers, reinforced by mesh stainless steel wire netting..2 Canvas shall be sewn and pasted on to all insulation and over cement finishes. Seams inconspicuously placed..3 Metal jacket..1 Apply over insulation in lieu of cement finish where specified..2 Apply over all other insulation in lieu of canvas finish where specified..3 Pull up tight. Provide overlap and secure with bands..4 Final surface shall be clean, smooth, and ready for painting. 3.3 Special Requirements.1 Breechings: weld steel clips and/or angle anchors. Stretch mesh stainless steel wire over insulation, anchor to wire or bands. Finish with finishing cement and canvas..2 Diesel generator exhaust piping and muffler shall be insulated and finished as for breeching. Install anti-friction material between muffler and insulation to prevent breakdown of insulation due to vibration. ***END OF SECTION***