Amendment 003 spec and drawings.pdf

Harrell Design Group, PC

AMENDMENT 003

April 29, 2026

CONSTRUCT CHILLER PLANT

Wilkes Barre Medical Center HDG Project Number: 21007

I. DRAWINGS (Refer to drawings for all clouded changes. Not every change is listed below).

The following drawings have been revised and reissued:

a. 11-H2

1. Added pump 11-fop-3

2. Add fuel filter system 11-ff-1

b. 11-H3

1. Added notes to clarify pump demolition

c. 11-H5, 11-H6, 11-H7, 11-H8

1. Deleted steam and condensate piping in the chiller plant

d. 11-H10

1. Deleted steam connection detail

e. 11-H13

1. Added pump 11-fop-3 to pump schedule

2. Added fuel oil filter system schedule

f. 11-H14

1. Deleted steam unit heater schedule

2. Add 4 unit heaters to electric unit heater schedule

g. 11-H18

1. Added/revised control diagrams for generator day tanks and controls.

h. 11-ES1

1. Keynote 9 added

2. Keynote 16 added

3. Fuel system circuits shown

4. Modified keynotes 8-12 and 14-16

i. 11-ED1

1. Keynote 7 added

j. 11-EP1

1. Unit heaters changed from steam to electric

2. Motor control center 1-C-MCCEQ1 modified for new heater circuits

k. 11-EE4.2

1. Motor control center 1-C-MCCEQ1 modified for new heater circuits

l. 11-EE6

1. Feeder schedule updated

2. SPDs added to all emergency panels

3. UPS Changed

4. Grounding added

5. Power metering added

m. 11-EE7

1. Feeders updated in panels

n. 11-EE7.1

1. Feeders updated in panels

o. 11EE7.3

1. Feeders in equipment schedule updated

2. Motor control schedules feeders updated

3. Motor control 1-C-MCCEQ1 heater circuits added

4. Fuel filtration system added to equipment schedule

II. SPECIFICATIONS (Refer to the bold and italicized changes. Not every change is listed below).

The following specifications have been revised and reissued or added.

a. 000100

1. Table of Contents updated to add new specification sections

b. 230711

1. Added back generator exhaust insulation

2. Added back calcium silicate insulation

c. 231000

1. Minor revisions to section 2.10

d. 282300

Video Surveillance specification added

e. 317400

1. Micropiles specification added

END OF AMENDMENT 003

06-01-21

00 01 10 - 1

DEPARTMENT OF VETERANS AFFAIRS

VHA MASTER SPECIFICATIONS

TABLE OF CONTENTS

Section 00 01 10

SECTION NO. DIVISION AND SECTION TITLES DATE

DIVISION 00 - SPECIAL SECTIONS

00 01 15 List of Drawing Sheets 05-20

DIVISION 01 - GENERAL REQUIREMENTS

01 00 00 General Requirements 05-21 01 32 16.15 Project Schedules Small Projects – Design/Bid/Build 03-20 01 33 23 Shop Drawings, Product Data, and Samples 06-21 01 35 26 Safety Requirements 07-20 01 42 19 Reference Standards 11-20 01 45 00 Quality Control 02-21 01 45 29 Testing Laboratory Services 11-18 01 45 35 Special Inspections 06-21 01 57 19 Temporary Environmental Controls 01-21 01 58 16 Temporary Interior Signage 07-15 01 74 19 Construction Waste Management 01-21 01 91 00 General Commissioning Requirements 10-15

DIVISION 02 – EXISTING CONDITIONS

02 41 00 Demolition 08-17

DIVISION 03 – CONCRETE

03 30 00 Cast-in-Place Concrete 01-21

DIVISION 04 – MASONRY

04 01 00 Maintenance of Masonry 01-21 04 05 13 Masonry Mortaring 10-17 04 05 16 Masonry Grouting 01-21 04 20 00 Unit Masonry 08-17 04 72 00 Cast Stone Masonry 01-21

DIVISION 05 – METALS

05 12 00 Structural Steel Framing 11-18 05 36 00 Composite Metal Decking 01-21 05 40 00 Cold-Formed Metal Framing 01-21 05 50 00 Metal Fabrications 08-18 05 51 00 Metal Stairs 01-21

DIVISION 06 – WOOD, PLASTICS AND COMPOSITES

00 01 10 - 2

SECTION NO. DIVISION AND SECTION TITLES DATE

06 10 00 Rough Carpentry 10-17

DIVISION 07 - THERMAL AND MOISTURE PROTECTION

07 08 00 Facility Exterior Closure Commissioning 01-21 07 13 52 Modified Bituminous Sheet Waterproofing 01-21 07 21 13 Thermal Insulation 01-21 07 22 00 Roof and Deck Insulation 01-21 07 24 00 Exterior Insulation and Finish Systems 01-21 07 27 27 Fluid-Applied Membrane Air Barrier, Vapor Retarding 01-21 07 54 23 Thermoplastic Polyolefin (TPO) Roofing 01-21 07 60 00 Flashing and Sheet Metal 01-21 07 71 00 Roof Specialties 01-21 07 72 00 Roof Accessories 01-21 07 81 00 Applied Fireproofing 10-17 07 84 00 Firestopping 01-21 07 92 00 Joint Sealants 10-17 07 95 13 Expansion Joint Cover Assemblies 01-21

DIVISION 08 - OPENINGS

08 11 13 Hollow Metal Doors and Frames 01-21 08 31 13 Access Doors and Frames 01-21 08 33 00 Coiling Doors and Grilles 01-21 08 71 00 Door Hardware 01-21 08 80 00 Glazing 01-21

DIVISION 09 – FINISHES

09 05 16 Subsurface Preparation for Floor Finishes 01-21 09 22 16 Non-Structural Metal Framing 06-18 09 29 00 Gypsum Board 04-20 09 65 13 Resilient Base and Accessories 01-21 09 67 23.70 Resinous (Epoxy Base) High Performance, Electrostatic

Dissipative Flooring (RES-7)

NA

09 91 00 Painting 01-21

DIVISION 10 – SPECIALTIES

10 14 00 Signage 01-21 10 44 13 Fire Extinguisher Cabinets 08-18

DIVISION 11 – EQUIPMENT – NOT USED

DIVISION 12 – FURNISHINGS – NOT USED

DIVISION 13 - SPECIAL CONSTRUCTION

13 05 41 Seismic Restraint Requirements for Non-Structural

Components 01-14

DIVISION 14 – CONVEYING EQUIPEMENT – NOT USED

00 01 10 - 3

SECTION NO. DIVISION AND SECTION TITLES DATE

DIVISION 21 - FIRE SUPPRESSION

21 08 00 Commissioning of Fire Suppression System 11-16 21 13 13 Wet-Pipe Sprinkler Systems 06-15

DIVISION 22 – PLUMBING

22 05 11 Common Work Results for Plumbing 09-20 22 05 12 General Motor Requirements for Plumbing Equipment 09-20 22 05 19 Meters and Gages for Plumbing Piping 09-20 22 05 23 General-Duty Valves for Plumbing Piping 09-20 22 07 11 Plumbing Insulation 09-19 22 08 00 Commissioning of Plumbing Systems 11-16 22 11 00 Facility Water Distribution 05-21 22 13 00 Facility Sanitary and Vent Piping 09-20 22 14 00 Facility Storm Drainage 09-15 22 14 36 Packaged, Submersible, Drainage Pump Units 09-15 22 40 00 Plumbing Fixtures 09-15 22 63 00 Gas Systems for Laboratory and Healthcare Facilities 09-15

DIVISION 23 – HEATING, VENTILATING, AND AIR

CONDITIONING (HVAC)

23 05 11 Common Work Results for HVAC 02-20 23 05 12 General Motor Requirements for HVAC and Steam

Generation Equipment 02-20

23 05 41 Noise and Vibration Control for HVAC Piping and Equipment

02-20

23 05 93 Testing, Adjusting, and Balancing for HVAC 02-20 23 07 11 HVAC and Boiler Plant Insulation 02-20 23 08 00 Commissioning of HVAC Systems 02-20 23 09 23 Direct-Digital Control System for HVAC 09-11 23 10 00 Facility Fuel Systems 04-20 23 21 13 Hydronic Piping 02-20 23 21 23 Hydronic Pumps 02-20 23 22 13 Steam and Condensate Heating Piping 02-20 23 25 00 HVAC Water Treatment 02-20 23 31 00 HVAC Ducts and Casings 02-20 23 34 00 HVAC Fans 02-20 23 37 00 Air Outlets and Inlets 02-20 23 51 00 Breechings, Chimneys, and Stacks 04-20 23 64 00 Packaged Water Chillers 03-20 23 65 00 Cooling Towers 03-20 23 82 00 Convection Heating and Cooling Units 03-20

DIVISION 25 – INTEGRATED AUTOMATION – NOT USED

DIVISION 26 – ELECTRICAL

26 05 11 Requirements for Electrical Installations 01-16 26 05 13 Medium-Voltage Cables 01-17

00 01 10 - 4

SECTION NO. DIVISION AND SECTION TITLES DATE

26 05 19 Low-Voltage Electrical Power Conductors and Cables 01-17 26 05 26 Grounding and Bonding for Electrical Systems 01-17 26 05 33 Raceway and Boxes for Electrical Systems 01-18 26 05 41 Underground Electrical Construction 01-17 26 05 73 Overcurrent Protective Device Coordination Study 01-18 26 08 00 Commissioning of Electrical Systems 11-16 26 09 23 Lighting Controls 01-18 26 11 16 Secondary Unit Substations 01-18 26 13 13 Medium-Voltage Circuit Breaker Switchgear 01-17 26 22 00 Low-Voltage Transformers 01-18 26 23 00 Low-Voltage Switchgear 01-17 26 23 13 Generator Paralleling Controls 01-17 26 24 13 Distribution Switchboards 01-18 26 24 16 Panelboards 01-18 26 24 19 Motor Control Centers 01-18 26 26 00 Power Distribution Units for Static Uninterruptible

Power Systems 01-18

26 27 26 Wiring Devices 01-18 26 29 11 Motor Controllers 01-18 26 29 21 Enclosed Switches and Circuit Breakers 01-17 26 32 13 Engine Generators 01-18 26 33 53 Static Uninterruptible Power Supply 01-17 26 36 23 Automatic Transfer Switches 01-17 26 41 00 Facility Lightning Protection 01-17 26 43 13 Surge Protective Devices 01-17 26 51 00 Interior Lighting 01-18 26 56 00 Exterior Lighting 01-18

DIVISION 27 – COMMUNICATIONS

27 05 11 Requirements for Communications Installations 09-19 27 05 26 Grounding and Bonding for Communications Systems 06-15 27 05 33 Raceways and Boxes for Communications Systems 10-18 27 08 00 Commissioning of Communications Systems 11-16 27 10 00 Control, Communication and Signal Wiring 06-15 27 11 00 Communications Equipment Room Fittings 06-15 27 15 00 Communications Structured Cabling 01-16 27 51 16 Public Address and Mass Notification Systems 10-18

DIVISION 28 – ELECTRONIC SAFETY AND SECURITY

28 05 00 Common Work Results for Electronic Safety and Security 04-18 28 05 13 Conductors and Cables for Electronic Safety and

Security 10-18

28 05 26 Grounding and Bonding for Electronic Safety and Security

09-11

28 05 28.33 Conduits and Backboxes for Electronic Safety and Security

09-11

28 08 00 Commissioning of Electronic Safety and Security Systems 11-16 28 13 00 Physical Access Control System 10-11 28 23 00 Video Surveillance 09-11 28 31 00 Fire Detection and Alarm 10-11

00 01 10 - 5

SECTION NO. DIVISION AND SECTION TITLES DATE

DIVISION 31 – EARTHWORK

31 20 00 Earthwork 07-16 31 23 19 Dewatering 10-12 31 74 00 Micropiles 04-26

DIVISION 32 – EXTERIOR IMPROVEMENTS

32 05 23 Cement and Concrete for Exterior Improvements 08-16 32 12 16 Asphalt Paving 09-15 32 17 23 Pavement Markings 08-16 32 31 13 Chain Link Fences and Gates 06-18 32 31 40 High Security Fences and Gates 08-16 32 90 00 Planting 07-16

DIVISION 33 – UTILITIES

33 40 00 Storm Sewer Utilities 12-17

DIVISION 34 – TRANSPORTATION – NOT USED

DIVISION 48 – Electrical Power Generation – NOT USED

APPENDIX

Geotechnical Report

---END---

02-01-20

23 07 11 - 1

SECTION 23 07 11

HVAC PLANT INSULATION

PART 1 - GENERAL

1.1 DESCRIPTION

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

1. HVAC piping, ductwork and equipment.

2. Boiler plant mechanical systems including burner fuel oil storage and handling facilities but excluding outside steam distribution.

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, ductwork or piping handling media at design temperature of 16 degrees C (60 degrees F) or below.

4. Exposed: Piping, ductwork, and equipment exposed to view in finished areas including mechanical

5. FSK: Foil-scrim-kraft facing.

6. Hot: HVAC Ductwork handling air at design temperature above 16 degrees C (60 degrees F); HVAC equipment or piping handling media above 41 degrees C (105 degrees F); Boiler Plant breechings and stack temperature range 150-370 degrees C(300-700 degrees F) and piping media and equipment 32 to 230 degrees C(90 to 450 degrees F).

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

8. Runouts: Branch pipe connections up to 25-mm (one-inch) nominal size to fan coil units or reheat coils for terminal units.

9. Thermal conductance: Heat flow rate through materials.

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

b. Pipe or Cylinder: Watt 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

23 07 11 - 2 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. HWH: Hot water heating supply.

13. HWHR: Hot water heating return.

14. GH: Hot glycol-water heating supply.

15. GHR: Hot glycol-water heating return.

16. CPD: Condensate pump discharge.

17. R: Pump recirculation.

18. FOS: Fuel oil supply.

19. FOR: Fuel oil return.

20. CW: Cold water.

21. SW: Soft water.

22. HW: Hot water.

23. CH: Chilled water supply.

24. CHR: Chilled water return.

25. RS: Refrigerant suction.

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

1.2 RELATED WORK

A Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, and SAMPLES.

B. Section 07 84 00, FIRESTOPPING.

C. Section 23 05 11, COMMON WORK RESULTS FOR HVAC.

D. Section 23 08 00, COMMISSIONING OF HVAC SYSTEMS.

E. Section 23 21 13, HYDRONIC PIPING.

1.3 QUALITY ASSURANCE

A. Refer to article QUALITY ASSURANCE, in Section 23 05 11, COMMON WORK

RESULTS FOR HVAC

B. Criteria:

1. Comply with NFPA 90A, particularly paragraphs 4.3.3.1 through

4.3.3.6, 4.3.10.2.6, and 5.4.6.4, parts of which are quoted as follows:

4.3.3.1 Pipe insulation and coverings, duct coverings, duct

linings, vapor retarder facings, adhesives, fasteners, tapes, and supplementary materials added to air ducts, plenums, panels, and duct silencers used in duct systems, unless otherwise provided for in 4.3.3.1.1 or 4.3.3.1.2., shall have, in the form in which they are used, a maximum flame spread index of 25 without evidence of continued progressive combustion and a maximum smoke http://www.nfpa.org/codesonline/document.asp?action=load&scope=0&path=NFPA/codes/nfpa0050-0099/0090a/codes-0121752&sub=&default=false#codes-id00090a00292#codes-id00090a00292

23 07 11 - 3 developed index of 50 when tested in accordance with NFPA 255, Standard Method of Test of Surface Burning Characteristics of

Building Materials.

4.3.3.1.1 Where these products are to be applied with adhesives, they shall be tested with such adhesives applied, or the adhesives used shall have a maximum flame spread index of 25 and a maximum smoke developed index of 50 when in the final dry state. (See 4.2.4.2.)

4.3.3.1.2 The flame spread and smoke developed index requirements of 4.3.3.1.1 shall not apply to air duct weatherproof coverings where they are located entirely outside of a building, do not penetrate a wall or roof, and do not create an exposure hazard.

4.3.3.2 Closure systems for use with rigid and flexible air ducts tested in accordance with UL 181, Standard for Safety Factory-

Made Air Ducts and Air Connectors, shall have been tested, listed, and used in accordance with the conditions of their listings, in accordance with one of the following:

(1) UL 181A, Standard for Safety Closure Systems for Use with

Rigid Air Ducts and Air Connectors

(2) UL 181B, Standard for Safety Closure Systems for Use with

Flexible Air Ducts and Air Connectors

4.3.3.3 Air duct, panel, and plenum coverings and linings, and pipe insulation and coverings shall not flame, glow, smolder, or smoke when tested in accordance with a similar test for pipe covering, ASTM C 411, Standard Test Method for Hot-Surface

Performance of High-Temperature Thermal Insulation, at the temperature to which they are exposed in service.

4.3.3.3.1 In no case shall the test temperature be below 121° C

(250° F).

4.3.3.4 Air duct coverings shall not extend through walls or

floors that are required to be fire stopped or required to have a fire resistance rating, unless such coverings meet the requirements of 5.4.6.4.

4.3.3.5* Air duct linings shall be interrupted at fire dampers to prevent interference with the operation of devices.

4.3.3.6 Air duct coverings shall not be installed so as to

conceal or prevent the use of any service opening.

javascript:parent.loadDoc('/nfpa0200-0299/0255',%20'',%20'codes-nfc0255') http://www.nfpa.org/codesonline/document.asp?action=load&scope=0&path=NFPA/codes/nfpa0050-0099/0090a/codes-0121752&sub=&default=false#codes-id00090a00222#codes-id00090a00222 http://www.nfpa.org/codesonline/document.asp?action=load&scope=0&path=NFPA/codes/nfpa0050-0099/0090a/codes-0121752&sub=&default=false#codes-id00090a00288#codes-id00090a00288 javascript:parent.loadDoc('/nfpa0050-0099/0090a/codes-0121943',%20'/',%20'codes-id00090a00643') javascript:parent.loadDoc('/nfpa0050-0099/0090a/codes-0122085',%20'',%20'codes-id00090a00304')

23 07 11 - 4

4.3.10.2.6 Materials exposed to the airflow shall be

noncombustible or limited combustible and have a maximum smoke developed index of 50 or comply with the following.

4.3.10.2.6.1 Electrical wires and cables and optical fiber cables shall be listed as noncombustible or limited combustible and have a maximum smoke developed index of 50 or shall be listed as having a maximum peak optical density of 0.5 or less, an average optical density of 0.15 or less, and a maximum flame spread distance of 1.5 m (5 ft) or less when tested in accordance with

NFPA 262, Standard Method of Test for Flame Travel and Smoke of

Wires and Cables for Use in Air-Handling Spaces.

4.3.10.2.6.2 Pneumatic tubing for control systems shall be listed as having a maximum peak optical density of 0.5 or less, an average optical density of 0.15 or less, and a maximum flame spread distance of 1.5 m (5 ft) or less when tested in accordance with UL 1820, Standard for Safety Fire Test of Pneumatic Tubing for Flame and Smoke Characteristics.

4.3.10.2.6.4 Optical-fiber and communication raceways shall be listed as having a maximum peak optical density of 0.5 or less, an average optical density of 0.15 or less, and a maximum flame spread distance of 1.5 m (5 ft) or less when tested in accordance with UL 2024, Standard for Safety Optical-Fiber Cable Raceway.

4.3.10.2.6.6 Supplementary materials for air distribution systems shall be permitted when complying with the provisions of 4.3.3.

5.4.6.4 Where air ducts pass through walls, floors, or partitions that are required to have a fire resistance rating and where fire dampers are not required, the opening in the construction around the air duct shall be as follows:

(1) Not exceeding a 25.4 mm (1 in.) average clearance on all sides

(2) Filled solid with an approved material capable of preventing the passage of flame and hot gases sufficient to ignite cotton waste when subjected to the time-temperature fire conditions required for fire barrier penetration as specified in

NFPA 251, Standard Methods of Tests of Fire Endurance of Building

Construction and Materials

2. Test methods: ASTM E84, UL 723, or NFPA 255.

javascript:parent.loadDoc('/nfpa0200-0299/0262',%20'',%20'codes-nfc262') http://www.nfpa.org/codesonline/document.asp?action=load&scope=0&path=NFPA/codes/nfpa0050-0099/0090a/codes-0121752&sub=&default=false#codes-id00090a00285#codes-id00090a00285 javascript:parent.loadDoc('/nfpa0200-0299/0251',%20'',%20'codes-nfc0251')

23 07 11 - 5

3. Specified k factors are at 24 degrees C (75 degrees F) mean temperature unless stated otherwise. Where optional thermal insulation material is used, select thickness to provide thermal conductance no greater than that for the specified material. For pipe, use insulation manufacturer's published heat flow tables. For domestic hot water supply and return, run out insulation and condensation control insulation, no thickness adjustment need be made.

4. All materials shall be compatible and suitable for service temperature, and shall not contribute to corrosion or otherwise attack surface to which applied in either the wet or dry state.

C. Every package or standard container of insulation or accessories delivered to the job site for use must have a manufacturer's stamp or label giving the name of the manufacturer and description of the material.

1.4 SUBMITTALS

A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT

DATA, and SAMPLES.

B. Shop Drawings:

1. All information, clearly presented, shall be included to determine compliance with drawings and specifications and ASTM, federal and military specifications.

a. Insulation materials: Specify each type used and state surface burning characteristics.

b. Insulation facings and jackets: Each type used. Make it clear that white finish will be furnished for exposed ductwork, casings and equipment.

c. Insulation accessory materials: Each type used.

d. Manufacturer's installation and fitting fabrication instructions for flexible unicellular insulation.

e. Make reference to applicable specification paragraph numbers for coordination.

C. Samples:

1. Each type of insulation: Minimum size 100 mm (4 inches) square for board/block/blanket; 150 mm (6 inches) long, full diameter for round types.

2. Each type of facing and jacket: Minimum size 100 mm (4 inches square).

23 07 11 - 6

3. Each accessory material: Minimum 120 ML (4 ounce) liquid container or 120 gram (4 ounce) dry weight for adhesives/cement/mastic.

1.5 STORAGE AND HANDLING OF MATERIAL

Store materials in clean and dry environment, pipe covering jackets shall be clean and unmarred. Place adhesives in original containers. Maintain ambient temperatures and conditions as required by printed instructions of manufacturers of adhesives, mastics and finishing cements.

1.6 APPLICABLE PUBLICATIONS

A. The publications listed below form a part of this specification to the extent referenced. The publications are referenced in the text by basic designation only.

B. Federal Specifications (Fed. Spec.):

L-P-535E (2) - 1999.....Plastic Sheet (Sheeting): Plastic Strip; Poly

(Vinyl Chloride) and Poly (Vinyl Chloride -

Vinyl Acetate), Rigid.

C. Military Specifications (Mil. Spec.):

MIL-A-3316C-1987 Adhesives, Fire-Resistant, Thermal Insulation

MIL-A-24179A (1)-2016 Adhesive, Flexible Unicellular-Plastic Thermal

Insulation

MIL-C-19565C (1)-2016 Coating Compounds, Thermal Insulation, Fire-and

Water-Resistant, Vapor-Barrier

MIL-C-20079H-1987.......Cloth, Glass; Tape, Textile Glass; and Thread, Glass and Wire-Reinforced Glass

D. American Society for Testing and Materials (ASTM):

A167-99 2014............Standard Specification for Stainless and

Heat-Resisting Chromium-Nickel Steel Plate, Sheet, and Strip

B209-2014...............Standard Specification for Aluminum and

Aluminum-Alloy Sheet and Plate

C449-2019...............Standard Specification for Mineral Fiber

Hydraulic-Setting Thermal Insulating and

Finishing Cement

C534-2017...............Standard Specification for Preformed Flexible

Elastomeric Cellular Thermal Insulation in

Sheet and Tubular Form

C547-2017...............Standard Specification for Mineral Fiber pipe

Insulation

23 07 11 - 7

C552-07.................Standard Specification for Cellular Glass

Thermal Insulation

C553-2015...............Standard Specification for Mineral Fiber

Blanket Thermal Insulation for Commercial and

Industrial Applications

C585-2016...............Standard Practice for Inner and Outer Diameters of Rigid Thermal Insulation for Nominal Sizes of Pipe and Tubing (NPS System) R (1998)

C612-2014...............Standard Specification for Mineral Fiber Block and Board Thermal Insulation

C1126-2019..............Standard Specification for Faced or Unfaced

Rigid Cellular Phenolic Thermal Insulation

C1136-2017..............Standard Specification for Flexible, Low

Permeance Vapor Retarders for Thermal

Insulation

D1668-97a 2017..........Standard Specification for Glass Fabrics (Woven and Treated) for Roofing and Waterproofing

E84-2014................Standard Test Method for Surface Burning

Characteristics of Building

Materials

E119-2007...............Standard Test Method for Fire Tests of Building

Construction and Materials

E136-2019...............Standard Test Methods for Behavior of Materials in a Vertical Tube Furnace at 750 degrees C

(1380 F)

E. National Fire Protection Association (NFPA):

90A-2018................Standard for the Installation of Air

Conditioning and Ventilating Systems

96-2018.................Standards for Ventilation Control and Fire

Protection of Commercial Cooking Operations

101-2018................Life Safety Code

F. Underwriters Laboratories, Inc (UL):

723-2018................UL Standard for Safety Test for Surface Burning

Characteristics of Building Materials with

Revision of 09/08

G. Manufacturer’s Standardization Society of the Valve and Fitting

Industry (MSS):

23 07 11 - 8

SP58-2018...............Pipe Hangers and Supports Materials, Design, and Manufacture

PART 2 - PRODUCTS

2.1 MINERAL FIBER OR FIBER GLASS

A. ASTM C612 (Board, Block), Class 1 or 2, density 48 kg/m3 (3 pcf), k =

0.037 (0.26) at 24 degrees C (75 degrees F), external insulation for temperatures up to 204 degrees C (400 degrees F) with foil scrim (FSK) facing.

B. ASTM C553 (Blanket, Flexible) Type I, Class B-3, Density 16 kg/m3 (1 pcf), k = 0.045 (0.31) Class B-5, Density 32 kg/m3 (2 pcf), k = 0.04

(0.27) at 24 degrees C (75 degrees F), for use at temperatures up to

204 degrees C (400 degrees F) with foil scrim (FSK) facing.

C. ASTM C547 (Pipe Fitting Insulation and Preformed Pipe Insulation), Class 1, k = 0.037 (0.26) at 24 degrees C (75 degrees F), for use at temperatures up to 230 degrees C (450 degrees F) with an all service vapor retarder jacket with polyvinyl chloride premolded fitting covering.

2.2 MINERAL WOOL OR REFRACTORY FIBER

A. Comply with Standard ASTM C612, Class 3, 450 degrees C (850 degrees F).

2.3 RIGID CELLULAR PHENOLIC FOAM

A. Preformed (molded) pipe insulation, ASTM C1126, type III, grade 1, k =

0.021(0.15) at 10 degrees C (50 degrees F), for use at temperatures up to 121 degrees C (250 degrees F) with all service vapor retarder jacket with polyvinyl chloride premolded fitting covering.

B. Equipment and Duct Insulation, ASTM C 1126, type II, grade 1, k = 0.021

(0.15) at 10 degrees C (50 degrees F), for use at temperatures up to

121 degrees C (250 degrees F) with rigid cellular phenolic insulation and covering, and all service vapor retarder jacket.

2.4 CELLULAR GLASS CLOSED-CELL

A. Comply with Standard ASTM C177, C518, density 120 kg/m3 (7.5 pcf) nominal, k = 0.033 (0.29) at 240 degrees C (75 degrees F).

B. Pipe insulation for use at temperatures up to 200 degrees C (400 degrees F) with all service vapor retarder jacket.

2.5 POLYISOCYANURATE CLOSED-CELL RIGID

A. Preformed (fabricated) pipe insulation, ASTM C591, type IV, K=0.027(0.19) at 24 degrees C (75 degrees F), flame spread not over 25, smoke developed not over 50, for use at temperatures up to 149 degree C

23 07 11 - 9

(300 degree F) with factory applied PVDC or all service vapor retarder jacket with polyvinyl chloride premolded fitting covers.

B. Equipment and duct insulation, ASTM C 591,type IV, K=0.027(0.19) at 24 degrees C (75 degrees F), for use at temperatures up to 149 degrees C

(300 degrees F) with PVDC or all service jacket vapor retarder jacket.

2.6 FLEXIBLE ELASTOMERIC CELLULAR THERMAL

ASTM C177, C518, k = 0.039 (0.27) at 24 degrees C (75 degrees F), flame spread not over 25, smoke developed not over 50, for temperatures from minus 4 degrees C (40 degrees F) to 93 degrees C (200 degrees F). No jacket required.

2.7 DUCT WRAP FOR KITCHEN HOOD GREASE DUCTS – NOT USED

2.8 CALCIUM SILICATE

A. Preformed pipe Insulation: ASTM C533, Type I and Type II with indicator denoting asbestos-free material.

B. Premolded Pipe Fitting Insulation: ASTM C533, Type I and Type II with indicator denoting asbestos-free material.

C. Equipment Insulation: ASTM C533, Type I and Type II

D. Characteristics:

Temperature, maximum degrees C

(degrees F)

649 (1200) 927 (1700)

Density (dry), Kg/m3 (lb/ ft3) 232 (14.5) 288 (18)

Thermal conductivity:

Min W/ m K (Btu in/h ft2 degrees F)@ mean temperature of 93 degrees C

(200 degrees F)

0.059

(0.41)

0.078

(0.540)

Surface burning characteristics:

Flame spread Index, Maximum

Smoke Density index, Maximum 0 0

2.9 INSULATION FACINGS AND JACKETS

A. Vapor Retarder, higher strength with low water permeance = 0.02 or less perm rating, Beach puncture 50 units for insulation facing on exposed ductwork, casings and equipment, and for pipe insulation jackets.

Facings and jackets shall be all service type (ASJ) or PVDC Vapor

Retarder jacketing.

B. ASJ jacket shall be white kraft bonded to 0.025 mm (1 mil) thick aluminum foil, fiberglass reinforced, with pressure sensitive adhesive

23 07 11 - 10 closure. Comply with ASTM C1136. Beach puncture 50 units, Suitable for painting without sizing. Jackets shall have minimum 40 mm (1-1/2 inch) lap on longitudinal joints and minimum 75 mm (3 inch) butt strip on end joints. Butt strip material shall be same as the jacket. Lap and butt strips shall be self-sealing type with factory-applied pressure sensitive adhesive.

C. Vapor Retarder medium strength with low water vapor permeance of 0.02 or less perm rating), Beach puncture 25 units: Foil-Scrim-Kraft (FSK) or PVDC vapor retarder jacketing type for concealed ductwork and equipment.

D. Field applied vapor barrier jackets shall be provided, in addition to the specified facings and jackets, on all exterior piping and ductwork

The vapor barrier jacket shall consist of a multi-layer laminated cladding with a maximum water vapor permeance of 0.001 perms. The minimum puncture resistance shall be 35 cm-kg (30 inch-pounds) for interior locations and 92 cm-kg (80 inch-pounds) for exterior or exposed locations or where the insulation is subject to damage.

E. Glass Cloth Jackets: Presized, minimum 0.18 kg per square meter (7.8 ounces per square yard), 2000 kPa (300 psig) bursting strength with integral vapor retarder where required or specified. Weather proof if utilized for outside service.

F. Factory composite materials may be used provided that they have been tested and certified by the manufacturer.

G. Pipe fitting insulation covering (jackets): Fitting covering shall be premolded to match shape of fitting and shall be polyvinyl chloride

(PVC) conforming to Fed Spec L-P-335, composition A, Type II Grade GU, and Type III, minimum thickness 0.7 mm (0.03 inches). Provide color matching vapor retarder pressure sensitive tape.

H. Aluminum Jacket-Piping systems and circular breeching and stacks: ASTM

B209, 3003 alloy, H-14 temper, 0.6 mm (0.023 inch) minimum thickness with locking longitudinal joints. Jackets for elbows, tees and other fittings shall be factory-fabricated to match shape of fitting and of

0.6 mm (0.024) inch minimum thickness aluminum. Fittings shall be of same construction as straight run jackets but need not be of the same alloy. Factory-fabricated stainless steel bands shall be installed on all circumferential joints. Bands shall be 13 mm (0.5 inch) wide on 450 mm (18 inch) centers. System shall be weatherproof if utilized for outside service.

23 07 11 - 11

I. Aluminum jacket-Rectangular breeching: ASTM B209, 3003 alloy, H-14 temper, 0.5 mm (0.020 inches) thick with 32 mm (1-1/4 inch) corrugations or 0.8 mm (0.032 inches) thick with no corrugations.

System shall be weatherproof if used for outside service.

2.10 REMOVABLE INSULATION JACKETS

A. Insulation and Jacket:

1. Non-Asbestos Glass mat, type E needled fiber.

2. Temperature maximum of 450°F, Maximum water vapor transmission of

0.00 perm, and maximum moisture absorption of 0.2 percent by volume.

3. Jacket Material: Silicon/fiberglass and LFP 2109 pure PTFE.

4. Construction: One piece jacket body with three-ply braided pure

Teflon or Kevlar thread and insulation sewn as part of jacket. Belt fastened.

2.11 PIPE COVERING PROTECTION SADDLES

A. Cold pipe support: Premolded pipe insulation 180 degrees (half-shells) on bottom half of pipe at supports. Material shall be cellular glass or high density Polyisocyanurate insulation of the same thickness as adjacent insulation. Density of Polyisocyanurate insulation shall be a minimum of 48 kg/m3 (3.0 pcf).

Nominal Pipe Size and Accessories Material (Insert Blocks)

Nominal Pipe Size mm (inches) Insert Blocks mm (inches)

Up through 125 (5) 150 (6) long

150 (6) 150 (6) long

200 (8), 250 (10), 300 (12) 225 (9) long

350 (14), 400 (16) 300 (12) long

450 through 600 (18 through 24) 350 (14) long

B. Warm or hot pipe supports: Premolded pipe insulation (180 degree half-shells) on bottom half of pipe at supports. Material shall be high density Polyisocyanurate (for temperatures up to 149 degrees C [300 degrees F]), cellular glass or calcium silicate. Insulation at supports shall have same thickness as adjacent insulation. Density of

Polyisocyanurate insulation shall be a minimum of 48 kg/m3 (3.0 pcf).

C. Boiler Plant Pipe supports: MSS SP58, Type 39. Apply at all pipe support points, except where MSS SP58, Type 3 pipe clamps provided as part of the support system.

23 07 11 - 12

2.12 ADHESIVE, MASTIC, CEMENT

A. Mil. Spec. MIL-A-3316, Class 1: Jacket and lap adhesive and protective finish coating for insulation.

B. Mil. Spec. MIL-A-3316, Class 2: Adhesive for laps and for adhering insulation to metal surfaces.

C. Mil. Spec. MIL-A-24179, Type II Class 1: Adhesive for installing flexible unicellular insulation and for laps and general use.

D. Mil. Spec. MIL-C-19565, Type I: Protective finish for outdoor use.

E. Mil. Spec. MIL-C-19565, Type I or Type II: Vapor barrier compound for indoor use.

F. ASTM C449: Mineral fiber hydraulic-setting thermal insulating and finishing cement.

G. Other: Insulation manufacturers' published recommendations.

2.13 MECHANICAL FASTENERS

A. Pins, anchors: Welded pins, or metal or nylon anchors with galvanized steel-coated or fiber washer, or clips. Pin diameter shall be as recommended by the insulation manufacturer.

B. Staples: Outward clinching monel or galvanized steel.

C. Wire: 1.3 mm thick (18 gage) soft annealed galvanized or 1.9 mm (14 gage) copper clad steel or nickel copper alloy.

D. Bands: 13 mm (0.5 inch) nominal width, brass, galvanized steel, aluminum or stainless steel.

2.14 REINFORCEMENT AND FINISHES

A. Glass fabric, open weave: ASTM D1668, Type III (resin treated) and Type

I (asphalt treated).

B. Glass fiber fitting tape: Mil. Spec MIL-C-20079, Type II, Class 1.

C. Tape for Flexible Elastomeric Cellular Insulation: As recommended by the insulation manufacturer.

D. Hexagonal wire netting: 25 mm (one inch) mesh, 0.85 mm thick (22 gage) galvanized steel.

E. Corner beads: 50 mm (2 inch) by 50 mm (2 inch), 0.55 mm thick (26 gage) galvanized steel; or, 25 mm (1 inch) by 25 mm (1 inch), 0.47 mm thick

(28 gage) aluminum angle adhered to 50 mm (2 inch) by 50 mm (2 inch)

Kraft paper.

F. PVC fitting cover: Fed. Spec L-P-535, Composition A, 11-86 Type II, Grade GU, with Form B Mineral Fiber insert, for media temperature 4 degrees C (40 degrees F) to 121 degrees C (250 degrees F). Below 4 degrees C (40 degrees F) and above 121 degrees C (250 degrees F).

23 07 11 - 13

Provide double layer insert. Provide color matching vapor barrier pressure sensitive tape.

2.15 FIRESTOPPING MATERIAL

Other than pipe and duct insulation, refer to Section 07 84 00

FIRESTOPPING.

2.16 FLAME AND SMOKE

Unless shown otherwise all assembled systems shall meet flame spread 25 and smoke developed 50 rating as developed under ASTM, NFPA and UL standards and specifications. See paragraph 1.3 "Quality Assurance".

PART 3 - EXECUTION

3.1 GENERAL REQUIREMENTS

A. Required pressure tests of duct and piping joints and connections shall be completed and the work approved by the Contracting Officers

Representative for application of insulation. Surface shall be clean and dry with all foreign materials, such as dirt, oil, loose scale and rust removed.

B. Except for specific exceptions, insulate entire specified equipment, piping (pipe, fittings, valves, accessories), and duct systems.

Insulate each pipe and duct individually. Do not use scrap pieces of insulation where a full length section will fit.

C. Where removal of insulation of piping, ductwork and equipment is required to comply with Section 02 82 11, TRADITIONAL ASBESTOS

ABATEMENT and Section 02 82 13.13, GLOVEBAG ASBESTOS ABATEMENT, such areas shall be reinsulated to comply with this specification.

D Insulation materials shall be installed in a first class manner with smooth and even surfaces, with jackets and facings drawn tight and smoothly cemented down at all laps. Insulation shall be continuous through all sleeves and openings, except at fire dampers and duct heaters (NFPA 90A). Vapor retarders shall be continuous and uninterrupted throughout systems with operating temperature 16 degrees

C (60 degrees F) and below. Lap and seal vapor retarder over ends and exposed edges of insulation. Anchors, supports and other metal projections through insulation on cold surfaces shall be insulated and vapor sealed for a minimum length of 150 mm (6 inches).

E. Install vapor stops at all insulation terminations on either side of valves, pumps and equipment and particularly in straight lengths of pipe insulation.

23 07 11 - 14

F. Construct insulation on parts of equipment such as chilled water pumps and heads of chillers, convertors and heat exchangers that must be opened periodically for maintenance or repair, so insulation can be removed and replaced without damage. Install insulation with bolted 1 mm thick (20 gage) galvanized steel or aluminum covers as complete units, or in sections, with all necessary supports, and split to coincide with flange/split of the equipment.

G. Insulation on hot piping and equipment shall be terminated square at items not to be insulated, access openings and nameplates. Cover all exposed raw insulation with white sealer or jacket material.

H. Protect all insulations outside of buildings with aluminum jacket using lock joint or other approved system for a continuous weather tight system. Access doors and other items requiring maintenance or access shall be removable and sealable.

I. HVAC work not to be insulated:

1. Internally insulated ductwork and air handling units.

2. Relief air ducts (Economizer cycle exhaust air).

3. Exhaust air ducts and plenums, and ventilation exhaust air shafts.

4. Equipment: Expansion tanks, flash tanks, hot water pumps

5. In hot piping: Unions, flexible connectors, control valves, PRVs, safety valves and discharge vent piping, vacuum breakers, thermostatic vent valves, steam traps 20 mm (3/4 inch) and smaller, exposed piping through floor for convectors and radiators. Insulate piping to within approximately 75 mm (3 inches) of uninsulated items.

J. Boiler plant work not to be insulated(NI)or if insulated the insulation shall be removal jacket type (RJ):

1. Pipes, valves and fittings:

a. Threaded valves (RJ)

b. Check valves (RJ)

c. Unions (RJ)

d. Orifice flanges (RJ)

e. Dielectric flanges and unions (RJ)

f. Steam header drains (NI)

g. Pressure transmission to gages (NI)

h. Piping in control panels (NI)

i. Chemical feed from pump-type feeders (NI)

j. Condensate piping from flash tank to condensate return pump (NI)

23 07 11 - 15

2.. Equipment:

a. Condensate return pump units(NI)

b. Pumps-inlet to outlet(NI)

c. Safety valves(NI)

d. Water meters(NI)

e. Chemical feeders(NI)

f. All nameplates (NI)

4. Specialties:

a. Pressure reducing valves(RJ)

b. Control valves-water and steam(NI)

c. Level sensors-piping, valves and blowdown(NI)

d. Strainers under 65 mm (2-1/2 inch) pipe size(RJ)

K. Apply insulation materials subject to the manufacturer's recommended temperature limits. Apply adhesives, mastic and coatings at the manufacturer's recommended minimum coverage.

L. Elbows, flanges and other fittings shall be insulated with the same material as is used on the pipe straights. The elbow/fitting insulation shall be field-fabricated, mitered or factory prefabricated to the necessary size and shape to fit on the elbow/fitting. Use of polyurethane spray-foam to fill a PVC elbow jacket is prohibited on cold applications.

M. Firestop Pipe and Duct insulation:

1. Provide firestopping insulation at fire and smoke barriers through penetrations. Fire stopping insulation shall be UL listed as defines in Section 07 84 00, FIRESTOPPING.

2. Pipe and duct penetrations requiring fire stop insulation including, but not limited to the following:

a. Pipe risers through floors

b. Pipe or duct chase walls and floors

c. Smoke partitions

d. Fire partitions

N. Freeze protection of above grade outdoor piping (over heat tracing tape): 26 mm (10 inch) thick insulation, for all pipe sizes 75 mm (3 inches) and smaller and 25 mm(1inch) thick insulation for larger pipes.

Provide metal jackets for all pipes. Provide for cold water make-up to cooling towers and condenser water piping and chilled water piping as described in Section 23 21 13, HYDRONIC PIPING (electrical heat tracing systems).

23 07 11 - 16

O. Provide vapor barrier jackets over insulation as follows:

1. All piping and ductwork exposed to outdoor weather.

P. Provide metal jackets over insulation as follows:

1. All piping and ducts exposed to outdoor weather.

2. Piping exposed in building, within 1800 mm (6 feet) of the floor, that connects to sterilizers, kitchen and laundry equipment. Jackets may be applied with pop rivets. Provide aluminum angle ring escutcheons at wall, ceiling or floor penetrations.

3. A 50 mm (2 inch) overlap is required at longitudinal and circumferential joints.

3.2 INSULATION INSTALLATION

A. Mineral Fiber Board:

1. Faced board: Apply board on pins spaced not more than 300 mm (12 inches) on center each way, and not less than 75 mm (3 inches) from each edge of board. In addition to pins, apply insulation bonding adhesive to entire underside of horizontal metal surfaces. Butt insulation edges tightly and seal all joints with laps and butt strips. After applying speed clips cut pins off flush and apply vapor seal patches over clips.

2. Plain board:

a. Insulation shall be scored, beveled or mitered to provide tight joints and be secured to equipment with bands spaced 225 mm (9 inches) on center for irregular surfaces or with pins and clips on flat surfaces. Use corner beads to protect edges of insulation.

b. For hot equipment: Stretch 25 mm (1 inch) mesh wire, with edges wire laced together, over insulation and finish with insulating and finishing cement applied in one coat, 6 mm (1/4 inch) thick, trowel led to a smooth finish.

c. For cold equipment: Apply meshed glass fabric in a tack coat 1.5 to 1.7 square meter per liter (60 to 70 square feet per gallon) of vapor mastic and finish with mastic at 0.3 to 0.4 square meter per liter (12 to 15 square feet per gallon) over the entire fabric surface.

d. Chilled water pumps: Insulate with removable and replaceable 1 mm thick (20 gage) aluminum or galvanized steel covers lined with insulation. Seal closure joints/flanges of covers with gasket

23 07 11 - 17 material. Fill void space in enclosure with flexible mineral fiber insulation.

3. Exposed, unlined ductwork and equipment in unfinished areas, mechanical and electrical equipment rooms and attics and duct work exposed to outdoor weather:

a. 40 mm (1-1/2 inch) thick insulation faced with ASJ (white all service jacket): Supply air duct

b. 40 mm (1-1/2 inch) thick insulation faced with ASJ: Return air duct, mixed air plenums and prefilter housing.

c. Outside air intake ducts: no insulation required

d. Exposed, unlined supply and return ductwork exposed to outdoor weather: 50 mm (2 inch) thick insulation faced with a reinforcing membrane and two coats of vapor barrier mastic or multi-layer vapor barrier with a maximum water vapor permeability of 0.001 perms.

4. Cold equipment: 40 mm (1-1/2inch) thick insulation faced with ASJ.

a. Chilled water pumps, water filter, chemical feeder pot or tank.

b. Pneumatic, cold storage water and surge tanks.

c. Convertors, air separators

d. Reheat coil casing and separation chambers on steam humidifiers located above ceilings.

e. Domestic water heaters and hot water storage tanks (not factory insulated).

B. Flexible Mineral Fiber Blanket:

1. Adhere insulation to metal with 75 mm (3 inch) wide strips of insulation bonding adhesive at 200 mm (8 inches) on center all around duct. Additionally secure insulation to bottom of ducts exceeding 600 mm (24 inches) in width with pins welded or adhered on

450 mm (18 inch) centers. Secure washers on pins. Butt insulation edges and seal joints with laps and butt strips. Staples may be used to assist in securing insulation. Seal all vapor retarder penetrations with mastic. Sagging duct insulation will not be acceptable. Install firestop duct insulation where required.

2. Supply air ductwork to be insulated includes main and branch ducts from AHU discharge to room supply outlets, and the bodies of ceiling outlets to prevent condensation. Insulate sound attenuator units, coil casings and damper frames. To prevent condensation insulate

23 07 11 - 18 trapeze type supports and angle iron hangers for flat oval ducts that are in direct contact with metal duct.

3. Concealed supply air ductwork.

a. Above ceilings at a roof level, in attics, and duct work exposed to outdoor weather: 50 mm (2 inch) thick insulation faced with

FSK.

b. Above ceilings for other than roof level: 40 mm (1 ½ inch) thick insulation faced with FSK.

4. Concealed outside air duct: 40 mm (1-1/2 inch) thick insulation faced with FSK.

5. Exhaust air branch duct from autopsy refrigerator to main duct: 40 mm (1-1/2 inch) thick insulation faced with FSK.

C. Molded Mineral Fiber Pipe and Tubing Covering:

1. Fit insulation to pipe or duct, aligning longitudinal joints. Seal longitudinal joint laps and circumferential butt strips by rubbing hard with a nylon sealing tool to assure a positive seal. Staples may be used to assist in securing insulation. Seal all vapor retarder penetrations on cold piping with a generous application of vapor barrier mastic. Provide inserts and install with metal insulation shields at outside pipe supports. Install freeze protection insulation over heating cable.

2. Contractor's options for fitting, flange and valve insulation:

a. Insulating and finishing cement for sizes less than 100 mm (4 inches) operating at surface temperature of 16 degrees C (61 degrees F) or more.

b. Factory premolded, one piece PVC covers with mineral fiber, (Form

B), inserts. Provide two insert layers for pipe temperatures below 4 degrees C (40 degrees F), or above 121 degrees C (250 degrees F). Secure first layer of insulation with twine. Seal seam edges with vapor barrier mastic and secure with fitting tape.

c. Factory molded, ASTM C547 or field mitered sections, joined with adhesive or wired in place. For hot piping finish with a smoothing coat of finishing cement. For cold fittings, 16 degrees

C (60 degrees F) or less, vapor seal with a layer of glass fitting tape imbedded between two 2 mm (1/16 inch) coats of vapor barrier mastic.

23 07 11 - 19

d. Fitting tape shall extend over the adjacent pipe insulation and overlap on itself at least 50 mm (2 inches).

3. Nominal thickness in millimeters and inches specified in the schedule at the end of this section.

D. Cellular Glass Insulation:

1. Pipe and tubing, covering nominal thickness in millimeters and inches as specified in the schedule at the end of this section.

2. Underground Piping Other than or in lieu of that Specified in

Section 23 21 13, HYDRONIC PIPING: Type II, factory jacketed with a

3 mm laminate jacketing consisting of 3000 mm x 3000 mm (10 ft x 10

ft) asphalt impregnated glass fabric, bituminous mastic and outside protective plastic film.

a. 75 mm (3 inches) thick for hot water piping.

b. As scheduled at the end of this section for chilled water piping.

c. Underground piping: Apply insulation with joints tightly butted.

Seal longitudinal self-sealing lap. Use field fabricated or factory made fittings. Seal butt joints and fitting with jacketing as recommended by the insulation manufacturer. Use 100 mm (4 inch) wide strips to seal butt joints.

d. Provide expansion chambers for pipe loops, anchors and wall penetrations as recommended by the insulation manufacturer.

e. Underground insulation shall be inspected and approved by the

Contracting Officer’s Representative as follows:

1) Insulation in place before coating.

2) After coating.

f. Sand bed and backfill: Minimum 75 mm (3 inches) all around insulated pipe or tank, applied after coating has dried.

3. Cold equipment: 50 mm (2 inch) thick insulation faced with ASJ for chilled water pumps, water filters, chemical feeder pots or tanks, expansion tanks, air separators and air purgers.

4. Exposed, unlined supply and return ductwork exposed to outdoor weather: 50 mm (2 inch) thick insulation faced with a reinforcing membrane and two coats of vapor barrier mastic or multi-layer vapor barrier with a water vapor permeability of 0.00 perms.

E. Flexible Elastomeric Cellular Thermal Insulation:

1. Apply insulation and fabricate fittings in accordance with the manufacturer's installation instructions and finish with two coats

23 07 11 - 20 of weather resistant finish as recommended by the insulation manufacturer.

2. Pipe and tubing insulation:

a. Use proper size material. Do not stretch or strain insulation.

b. To avoid undue compression of insulation, provide cork stoppers or wood inserts at supports as recommended by the insulation manufacturer. Insulation shields are specified under Section 23

05 11, COMMON WORK RESULTS FOR HVAC.

c. Where possible, slip insulation over the pipe or tubing prior to connection, and seal the butt joints with adhesive. Where the slip-on technique is not possible, slit the insulation and apply it to the pipe sealing the seam and joints with contact adhesive.

Optional tape sealing, as recommended by the manufacturer, may be employed. Make changes from mineral fiber insulation in a straight run of pipe, not at a fitting. Seal joint with tape.

3. Apply sheet insulation to flat or large curved surfaces with 100 percent adhesive coverage. For fittings and large pipe, apply adhesive to seams only.

4. Pipe insulation: nominal thickness in millimeters (inches as specified in the schedule at the end of this section.

5. Minimum 20 mm (0.75 inch) thick insulation for pneumatic control lines for a minimum distance of 6 m (20 feet) from discharge side of the refrigerated dryer.

6. Use Class S (Sheet), 20 mm (3/4 inch) thick for the following:

a. Chilled water pumps

b. Bottom and sides of metal basins for winterized cooling towers

(where basin water is heated).

c. Chillers, insulate any cold chiller surfaces subject to condensation which has not been factory insulated.

d. Piping inside refrigerators and freezers: Provide heat tape under insulation.

7. Exposed, unlined supply and return ductwork exposed to outdoor weather: 50 mm (2 inch) thick insulation faced with a multi-layer vapor barrier with a water vapor permeance of 0.00 perms.

I. Calcium Silicate:

1. Minimum thickness in millimeter (inches) specified in the schedule at the end of this section for piping other than in boiler plant.

See paragraphs 3.3 through 3.7 for Boiler Plant Applications.

23 07 11 - 21

2. Engine Exhaust Insulation for Emergency Generator and Diesel Driven

Fire Pump: Type II, Class D, 65 mm (2…