scope:

DESCRIPTION

A. Field applied insulation for thermal efficiency and condensation control for

1. Plumbing piping and equipment.

//2. Re-insulation of plumbing piping and equipment after asbestos abatement.//

B. Definitions

1. ASJ: All service jacket, white finish facing or jacket.

2. Air conditioned space: Space having air temperature and/or humidity controlled by mechanical equipment.

3. Cold: Equipment or piping handling media at design temperature of 16 degrees C (60 degrees F) or below.

4. Concealed: Piping above ceilings and in chases, //interstitial space, // and pipe spaces.

5. Exposed: Piping and equipment exposed to view in finished areas including mechanical equipment rooms or exposed to outdoor weather. Shafts, chases, //interstitial spaces, // unfinished attics, crawl spaces and pipe basements are not considered finished areas.

6. FSK: Foil-scrim-kraft facing.

7. Hot: Plumbing equipment or piping handling media above 41 degrees C (105 degrees F).

8. Density: kg/m³ - kilograms per cubic meter (Pcf - pounds per cubic foot).

9. Thermal conductance: Heat flow rate through materials.

a. Flat surface: Watts per square meter (BTU per hour per square foot).

b. Pipe or Cylinder: Watts per square meter (BTU per hour per linear foot).

10. Thermal Conductivity (k): Watt per meter, per degree C (BTU per inch thickness, per hour, per square foot, per degree F temperature difference).

11. Vapor Retarder (Vapor Barrier): A material which retards the transmission (migration) of water vapor. Performance of the vapor retarder is rated in terms of permeance (perms). For the purpose of this specification, vapor retarders shall have a maximum published permeance of 0.1 perms and vapor barriers shall have a maximum published permeance of 0.001 perms.

12. R: Pump recirculation.

13. CW: Cold water.

14. SW: Soft water.

15. HW: Hot water.

16. PVDC: Polyvinylidene chloride vapor retarder jacketing, white.