Mechanical Specification MZ & Partners 11088-2B+G+M+24 White Square Apt. Bldg.

Insulation February 2012 15250-7

5. Insulate valves, strainers, fittings and flanges with identical material, density, thickness and finish as the pipe insulation. Use premoulded material where available, otherwise use shaped block segments wired on with all edges filled with insulating cement or filler.

6. Insulate strainers to permit removal of the basket without disturbing the insulation of the strainer body.

7. All expressed insulated pipes ducts, values and strainers inside plant rooms to be protected and finished by a 0.8mm thick fabricated aluminum finished.

2.03 PIPEWORK THERMAL INSULATION ( TYPE B)

This type of insulation shall apply to refrigerant pipes, condensate drain pipes from Airconditioning equipment and to domestic hot water system under tiles or in walls.

Pipes shall be insulated with physically cross linked closed cell polyolefin foam type insulation. Insulation shall be closed sell tubing with finished skin, chemical and oil resistant with minimum water absorption. Insulation shall stand extremes temperatures ranging from 40C to 120C. Inner tubing insulation diameter shall be equal to outer utility pipe diameter. Rubber insulation shall be wrapped with 2 layers of PVC tape.

Insulation density shall be 0.111 Gms/m3 with thermal conductivity K value at 40C mean temperature 0.041 W/M-K insulation shall be self extinguishing.

Insulation shall be ASTM approved similar to Gulf O Flex or approved equal.

2.04 PIPEWORK INSULATION - TYPE C

This type of insulation shall apply to Laundry exhaust ducts, boiler breeching, chimney and exhaust pipe of the diesel fire pump and generator exhaust pipe. Insulation shall be of rockwool ( 120kg/m3) 100 mm thick with aluminum sheet metal jacket 0.8 mm thick as described for heating water pipes in Mechanical Rooms

PIPEWORK CLADDING

The chilled water shall be cladded and finished by a fabricated aluminum casing with hammered finish. The aluminum shall not be less than 0.6mm thick on pipework of under 150mm, measured over the insulation, and not less than 0.8mm thick on pipework of 150 mm and over, measured over the insulation. Bends, elbow, tees, etc., shall be fabricate from the same gauge aluminum as the straight length adjacent. For detachable valve and flange boxes the aluminum shall not be less than 1.0 mm thick. Valve bodies and flanges shall be insulated by muff covers. They shall be arranged for easy removal and finished with fabric sewn-on or applied with an adhesive.

PART 3 - EXECUTION

3.01 INSPECTION:

A. Prior to all work of this Section, carefully inspect the installation of the materials and equipment to be insulated to verify that all such work is complete to the point where this installation may properly commence.

B. Verify that all insulation may be installed in accordance with all governing codes and regulations, the original design, the referenced standards, and the manufacturers written instructions.

C. Verify that equipment surfaces are thoroughly clean and dry.

3.02 TESTS

A. Do not install insulation until specified tests have been conducted on the system to be insulated and results approved.

2.03 PIPEWORK THERMAL INSULATION ( TYPE B)

This type of insulation shall apply to refrigerant pipes, condensate drain pipes from Airconditioning This type of insulation shall apply to refrigerant pipes, condensate drain pipes from Airconditioning equipment and to domestic hot water system under tiles or in walls.

Pipes shall be insulated with physically cross liPipes shall be insulated with physically cross linked closed cell polyolefin foam type insulation. Pipes shall be insulated with physically cross linked closed cell polyolefin foam type insulation. Insulation shall be closed sell tubing with finished skin, chemical and oil resistant with minimum water Insulation shall be closed sell tubing with finished skin, chemical and oil resistant with minimum water absorption. Insulation shall stand extremes temperatures ranging from 40C to 120C. Inner tubing absorption. Insulation shall stand extremes temperatures ranging from 40C to 120C. Inner tubing insulation diameter shall be equal to outer utility pipe diameter. Rubber insulation shall be wrapped insulation diameter shall be equal to outer utility pipe diameter. Rubber insulation shall be wrapped with 2 layers of PVC tape.

Insulation density shall be 0.111 Gms/m3 with thermal conductivity K value at 40C mean temperature Insulation density shall be 0.111 Gms/m3 with ther0.041 W/M-K insulation shall be self extinguishing.

Insulation shall be ASTM approved similar to Gulf O Flex or approved equal.