Amend 0003_22 07 19.pdf

Climatic Cold Chambers Rev. 2020-04-29 Cold Regions Research and Engineering Laboratory (CRREL)

SECTION 22 07 19

PLUMBING PIPING INSULATION

08/16

PART 1 GENERAL

Section 22 00 00 PLUMBING, GENERAL PURPOSE applies to work specified in this section.

1.1 REFERENCES

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

ASTM INTERNATIONAL (ASTM)

ASTM B209 (2014) Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate

ASTM C195 (2007; R 2013) Standard Specification for Mineral Fiber Thermal Insulating Cement

ASTM C449 (2007; R 2013) Standard Specification for Mineral Fiber Hydraulic-Setting Thermal Insulating and Finishing Cement

ASTM C547 (2017) Standard Specification for Mineral Fiber Pipe Insulation

ASTM C552 (2017; E 2018) Standard Specification for Cellular Glass Thermal Insulation

ASTM C647 (2008; R 2013) Properties and Tests of Mastics and Coating Finishes for Thermal Insulation

ASTM C795 (2008; R 2018) Standard Specification for Thermal Insulation for Use in Contact with Austenitic Stainless Steel

ASTM C916 (2014) Standard Specification for Adhesives for Duct Thermal Insulation

ASTM C920 (2018) Standard Specification for Elastomeric Joint Sealants

ASTM C921 (2010) Standard Practice for Determining the Properties of Jacketing Materials for Thermal Insulation

ASTM C1136 (2017a) Standard Specification for Flexible, Low Permeance Vapor Retarders for Thermal Insulation

ASTM D579/D579M (2015) Standard Specification for Greige Woven Glass Fabrics

SECTION 22 07 19 Page 1

ASTM D5590 (2000; R 2010; E 2012) Standard Test Method for Determining the Resistance of Paint Films and Related Coatings to Fungal Defacement by Accelerated Four-Week Agar Plate Assay

ASTM E84 (2018a) Standard Test Method for Surface Burning Characteristics of Building Materials

ASTM E96/E96M (2016) Standard Test Methods for Water Vapor Transmission of Materials

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 220 (2018) Standard on Types of Building Construction

SOCIETY OF AUTOMOTIVE ENGINEERS INTERNATIONAL (SAE)

SAE AMS 3779 (2016; Rev B) Tape Adhesive, Pressure Sensitive Thermal Radiation Resistant, Aluminum Foil/Glass Cloth

U.S. DEPARTMENT OF DEFENSE (DOD)

MIL-A-3316 (1987; Rev C; Am 2 1990) Adhesives, Fire-Resistant, Thermal Insulation

MIL-PRF-19565 (1988; Rev C) Coating Compounds, Thermal Insulation, Fire- and Water-Resistant, Vapor-Barrier

1.2 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for Contractor Quality Control approval. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government.

Submittals with an "S" are for inclusion in the Sustainability eNotebook, in conformance to Section 01 33 29 SUSTAINABILITY REPORTING. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Installation Drawings; G, AE

SD-03 Product Data

Adhesives; G , AE

Coatings; G , AE

Insulating Cement; G , AE

Insulation Materials; G , AE

Jacketing; G , AE

SECTION 22 07 19 Page 2

Tape; G , AE

SD-08 Manufacturer's Instructions

Installation Manual; G

SD-11 Closeout Submittals

Record Drawings

Adhesives; S

Coatings; S

Insulation Materials; S

Recycled Materials; S

1.3 QUALITY CONTROL

1.3.1 Recycled Materials

Provide thermal insulation containing recycled materials to the extent practicable, provided that the material meets all other requirements of this section. The minimum recycled material content of the following insulation types are:

a. Rock Wool - 75 percent slag by weight

b. Fiberglass - 20-25 percent glass cullet by weight

c. Plastic Rigid Foam - 9 percent recovered material

d. Polyisocyanurate/Polyurethane - 9 percent recovered material

e. Rigid Foam - 9 percent recovered material

Submit recycled materials documentation indicating percentage of post-industrial and post-consumer recycled content per unit of product.

Indicate relative dollar value of recycled content products to total dollar value of products included in project.

PART 2 PRODUCTS

2.1 SYSTEM DESCRIPTION

2.1.1 Performance Requirements

Provide noncombustible thermal-insulation system materials, as defined by NFPA 220 . Provide adhesives, coatings, sealants, facings, jackets, and thermal-insulation materials, except cellular elastomers, with a flame-spread classification (FSC) of 25 or less, and a smoke-developed classification (SDC) of 50 or less. Determine these maximum values in accordance with ASTM E84. Provide coatings and sealants that are nonflammable in their wet state.

Provide adhesives, coatings, and sealants with published or certified temperature ratings suitable for the entire range of working temperatures

SECTION 22 07 19 Page 3 normal for the surfaces to which they are to be applied.

2.2 COMPONENTS

2.2.1 Insulation

2.2.1.1 Mineral Fiber Insulation

Provide mineral fiber insulation conforming to ASTM C547 and suitable for surface temperatures up to 370 degrees F. Provide insulation with a density not less than 4-pound per cubic foot and with thermal conductivity not greater than 0.26 Btu-inch per hour per square foot per degree F at 150 degrees F mean.

2.2.1.2 Cellular Glass Insulation

Conform to ASTM C552, Type II, Grade 2, pipe covering for Cellular Glass.

Substitutions for this material are not permitted. Ensure minimum thickness is not less than 1-1/2 inches.

2.2.1.3 Fiberglass Insulation

Conform to ASTM C547. Ensure the apparent thermal conductivity does not exceed 0.54 Btu-inch per hour per square foot per degree F at 200 degrees F mean.

Fiber glass pipe insulation having an insulating efficiency not less than that of the specified thickness of mineral fiber pipe insulation may be provided in lieu of mineral fiber pipe insulation for aboveground piping.

2.2.1.4 Pipe Fittings

Provide molded pipe fitting insulation covering for use at temperatures up to and including 1200 degrees F.

2.2.1.5 Removable, Reusable Insulation Covers

Provide removable, reusable insulation covers, with water-resistant silicone impregnated woven glass fabric outer jackets, flexible water-resistant hydrophobic insulation suitable for contact with electric heat tracing, and reusable fasteners. Jackets shall be fastened using a combination of hook and loop strips, with straps and D-rings as necessary. Insulation covers shall be designed to fit tight and prevent entry of air, and include identifying nameplates describing the intended application. Provide devices to secure the insulation to the building floor slab to keep out cold room air, with fasteners that allow removing the insulation.

2.2.1.6 Underslab Insulation Board

Insulation boards shall be extruded polystyrene foam in rigid board form conforming to ASTM C578 Type VI, at least 2 inches thick, in sheets at least 4 feet wide, with compressive strength 40 psi and insulation R-value (deg. F-sq. ft-hr/Btu) of 5 per inch.

SECTION 22 07 19 Page 4

2.2.2 Adhesives

2.2.2.1 Lagging Adhesive

Lagging is the material used for thermal insulation, especially around a cylindrical object. This may include the insulation as well as the cloth/material covering the insulation. To resist mold/mildew, ensure lagging adhesive conforms to ASTM D5590 with 0 growth rating. Provide nonflammable and fire-resistant lagging adhesives with a maximum flame spread index of 25 and a maximum smoke developed index of 50 when tested in accordance with ASTM E84. Adhesive are MIL-A-3316 , Class 1, pigmented white and suitable for bonding fibrous glass cloth to faced and unfaced fibrous glass insulation board; for bonding cotton brattice cloth to faced and unfaced fibrous glass insulation board; for sealing edges of and bonding glass tape to joints of fibrous glass board; for bonding lagging cloth to thermal insulation; or Class 2 for attaching fibrous glass insulation to metal surfaces. Apply lagging adhesives in strict accordance with the manufacturer's recommendations for pipe and duct insulation.

2.2.2.2 Vapor-Barrier Material Adhesives

Ensure adhesives conform to the requirements of ASTM C916, Type I, when attaching fibrous-glass insulation to metal surfaces or attaching insulation to itself, to metal, and to various other substrates.

2.2.3 Insulating Cement

2.2.3.1 General Purpose Insulating Cement

Provide general purpose insulating cement, mineral fiber, conforming to ASTM C195. Ensure composite is rated for1800 degrees F service, with a thermal-conductivity maximum of 0.85 Btu per inch per hour per square foot for each degree F temperature differential at 200 degrees F mean temperature for a 1 inch thickness.

2.2.3.2 Finishing Insulating Cement

Provide finishing insulating cement of a mineral-fiber, hydraulic-setting type conforming to ASTM C449.

2.2.4 Caulk

Provide elastomeric joint sealant in accordance with ASTM C920, Type S, Grade NS, Class 25, Use A.

2.2.5 Jacketing

2.2.5.1 Aluminum Jacket

Provide aluminum jackets conforming ASTM B209, Temper H14, minimum thickness of 0.016 inch, with factory-applied polyethylene and kraft paper moisture barrier on the inside surface. Provide smooth surface jackets for jacket outside diameters less than 8 inches. Provide corrugated surface jackets for jacket outside diameters 8 inches and larger. Provide stainless steel bands, minimum width of 0.5 inch. Provide factory prefabricated aluminum covers for insulation on fittings, valves, and flanges.

SECTION 22 07 19 Page 5

2.2.6 Coatings

2.2.6.1 Indoor Vapor-Barrier Finishing

Provide a pigmented resin and solvent compound coatings conforming to ASTM C1136, Type II.

2.2.6.2 Vapor Retarder

The vapor retarder coating shall be fire and water resistant and appropriately selected for either outdoor or indoor service. Color shall be white. The water vapor permeance of the compound shall be 0.013 perms or less at 43 mils dry film thickness as determined according to procedure B of ASTM E96/E96M utilizing apparatus described in ASTM E96/E96M. The coating shall be nonflammable, fire resistant type. Coating shall meet MIL-PRF-19565 Type II (if selected for indoor service) and be Qualified Products Database listed. All other application and service properties shall be in accordance with ASTM C647.

2.2.6.3 Coating Color

Provide white for the coating color.

2.2.7 Tape

Provide a knitted elastic cloth glass lagging specifically suitable for continuous spiral wrapping of insulated pipe bends and fittings that produces a smooth, tight, wrinkle-free surface. Conform to requirements of SAE AMS 3779 , ASTM D579/D579M, and ASTM C921 for tape, weighing not less than 10 ounces per square yard.

2.3 MATERIALS

Submit manufacturer's catalog data for the following items:

a. Adhesives

b. Coatings

c. Insulating Cement

d. Insulation Materials

e. Jacketing

f. Tape

Provide compatible materials that do not contribute to corrosion, soften, or otherwise attack surfaces to which applied, in either the wet or dry state. Meet ASTM C795 requirements for materials to be used on stainless steel surfaces. Provide materials that are asbestos free.

PART 3 EXECUTION

Apply insulation only to the system or component surfaces that have previously been tested and approved by the Contracting Officer.

SECTION 22 07 19 Page 6

3.1 PREPARATION

Submit installation drawings for pipe insulation, conforming with the adhesive manufacturer's written instructions for installation. Submit installation manual clearly stating the manufacturer's instructions for insulation materials.

Clean surfaces to remove oil and grease before insulation adhesives or mastics are applied. Provide solvent cleaning required to bring metal surfaces to such condition.

3.2 INSTALLATION OF INSULATION SYSTEMS

Apply materials in conformance with the recommendations of the manufacturer.

Install smooth and continuous contours on exposed work. Smoothly and securely paste down cemented laps, flaps, bands, and tapes. Apply adhesives on a full-coverage basis.

Install insulation lengths tightly butted against each other at joints.

Where lengths are cut, provide smooth and square and without breakage of end surfaces. Where insulation terminates, neatly taper and effectively seal ends, or finish as specified. Direct longitudinal seams of exposed insulation away from normal view.

Use insulation meeting maximum value conductance as tested at any point, do not use an average. Meet or exceed the specified maximum conductance by adding additional insulation thickness.

3.2.1 Electric-Heat-Traced Piping

Install a mineral fiber insulation with glass cloth jacket, Type T-2 on general piping; for piping in contact with floor slabs and to 12 inches above the floor slab, provide cellular glass insulation. For funnel floor drains receiving condensate drainage, provide removable, reusable insulation covers. Provide a thickness of not less than 1-1/2 inches;

provide thickness required by heat tracing manufacturer and heat tracing design specified in Section 22 00 00 PLUMBING, GENERAL PURPOSE. Insulate aboveground pipes, valve bodies, fittings, unions, flanges, and miscellaneous surfaces.

Hot-Water and Tepid-Water Piping

Install a mineral fiber insulation with glass cloth jacket, Type T-2, with a thickness of not less than 1 inch. Insulate aboveground pipes, valve bodies, fittings, unions, flanges, and miscellaneous surfaces.

3.2.2 Cold-Water and Condensate-Drain Piping

Insulate aboveground pipes, valve bodies, fittings, unions, flanges, and miscellaneous surfaces.

Provide 3/8 inch mineral fiber insulation with glass cloth jacket, Type T-2, with a thickness of not less than 1/2 inch.

3.2.3 Underslab Insulation Board

Provide insulation over the top of sanitary drain and vent piping and

SECTION 22 07 19 Page 7 other piping below the floor slab in the unheated Staging Enclosure.

Install centered above horizontal piping runs with the 4-foot sheet dimension perpendicular to the piping. Install above other portions of the piping and around floor penetrating items to provide at least 2 feet of insulation extending horizontally all around the floor penetrations.

Provide underslab insulation board under the floor slab of the entire electrically heated floor area surrounding the floor drain at the emergency shower. Extend insulation at least 6 inches beyond the perimeter of the heated area.

Butt the insulation board sheets tightly together with no gaps. Provide continuous strips of manufacturer's recommended self-adhesive water-resistant sealing tape (or acceptable substitute) to fasten sheets together, and tape insulation to floor penetrating pipe risers, so that the insulation is held in place during backfilling and concrete slab placement. Provide other securements as necessary to prevent the insulation from shifting during backfilling.

In addition to the foam insulation board, additional insulation suitable for direct burial such as cellular glass may be applied to piping in and below the floor, to enhance the freeze-protection effectiveness of the electric heat tracing.

3.3 APPLICATION

3.3.1 Type T-1, Mineral Fiber with Vapor-Barrier Jacket

Apply factory and field attached vapor barrier jacket to piping insulated with mineral fiber. Maintain vapor seal. Securely cement jackets, jacket laps, flaps, and bands in place with vapor-barrier adhesive. Provide jacket overlaps not less than 1-1/2 inches and jacketing bands for butt joints 3-inches in width.

Insulate exposed-to-view fittings and valve bodies with preformed mineral-fiber of the same thickness as the pipe-barrel insulation.

Temporarily secure fitting insulation in place with light cord ties.

Apply a 60-mil coating of white indoor vapor-barrier coating and, while still wet, wrap with glass lagging tape with 50 percent overlap, and smoothly blend into the adjacent jacketing. Apply additional coating as needed with rubber-gloved hands to smooth fillets or contour coating.

Allow to fully cure before the finish coating is applied. Field fabricate and install insulation for concealed fittings and special configurations.

Build up insulation from mineral fiber and a special mastic consisting of a mixture of insulating cement and lagging adhesive diluted with 3 parts water. Where standard vapor-barrier jacketing cannot be used, make the surfaces vapor tight by using coating and glass lagging cloth or tape as previously specified.

In lieu of materials and methods previously specified, fittings may be wrapped with a twine-secured, mineral-wool blanket to the required thickness and covered with premolded polyvinylchloride jackets. Make seams vapor tight with a double bead of manufacturer's standard vapor-barrier adhesive applied in accordance with the manufacturer's instructions. Hold all jacket ends in place with AISI 300 series corrosion-resistant steel straps, 15-mils thick by 1/2-inch wide.

Set pipe insulation into an outdoor vapor-barrier coating applied intermittently over a minimum length of 6 inches at maximum 12 feet

SECTION 22 07 19 Page 8 spacing. Seal the ends of the insulation to the jacketing with the same coating material to provide an effective vapor-barrier stop.

Do not use staples as a means to apply insulation. Install continuous vapor-barrier materials over all surfaces, including areas inside pipe sleeves, hangers, and other concealment.

Provide piping insulation at hangers consisting of 13-pounds per cubic foot density; fibrous-glass inserts or expanded, rigid, closed-cell, polyvinylchloride. Where required, seal junctions with vapor-barrier jacket, glass-cloth mesh tape, and vapor-barrier coating.

Expose white-bleached kraft paper side of the jacketing to view.

Finish exposed-to-view insulation with not less than a 6-mil dry-film thickness of nonvapor-barrier coating suitable for painting.

3.3.2 Type T-4, Cellular Glass with Aluminum Jacket

Apply factory and field attached vapor barrier jacket to piping insulated with cellular glass. Maintain vapor seal. Securely cement jackets, jacket laps, flaps, and bands in place with vapor-barrier adhesive.

Provide jacket overlaps not less than 1-1/2 inches. Provide jacket bands for butt joints of not less than3 inches width. Provide insulation continuous through hangers. Bed insulation in an outdoor vapor-barrier coating applied to all piping surfaces.

Insulate flanges, unions, valves, anchors, and fittings with factory premolded or prefabricated or field fabricated segments of insulation of the same material and thickness as the adjoining pipe insulation. When segments of insulation are used, provide elbows with not less than three segments. For other fittings and valves, cut segments to the required curvature or nesting size.

Secure segments of the insulation in place with twine or copper wire.

After the insulation segments are firmly in place, apply a vapor-barrier coating over the insulation in two coats with glass tape imbedded between coats.

Provide field-applied aluminum jacket. Securely cement jacket laps, flaps, and bands in place with aluminum jacket sealant. Provide 6 inch wide minimum jacketing bands for butt joints. Where mineral fiber insulation is installed adjacent to and above the cellular glass insulation, the aluminum jacket on the mineral wool insulation shall overlap the lower aluminum jacket to shed water downward..

3.3.3 Type T-6, Mineral Fiber with Aluminum Jacket

On insulated piping that is 12 feet or less above the building's finished floor, apply factory or field attached aluminum jacket to piping insulated with mineral fiber.

Insulate fittings and valve bodies with preformed mineral-fiber of the same thickness as the pipe-barrel insulation. Temporarily secure fitting insulation in place with light cord ties. Apply a 60-mil coating of vapor-barrier mastic, and while still tacky, wrap with glass lagging tape.

Apply additional mastic as needed using rubber-gloved hands to smooth fillets or contour coatings. Field fabricate and install insulation for

SECTION 22 07 19 Page 9 special configurations. Build up insulation from mineral fiber and a mixture of insulating cement and lagging adhesive diluted with 3 parts water. Only where standard aluminum jacketing cannot be used, make the surfaces vapor-tight by using mastic and glass lagging cloth or tape as specified above with an added finish coat of mastic.

Set pipe insulation into outdoor vapor-barrier coating applied intermittently over a minimum length of 6-inches with a maximum coating application of 12-foot. Seal ends of the insulation to the jacketing with the same coating material to provide effective vapor barrier stops.

Install continuous vapor barrier over all surfaces, including areas inside pipe sleeves, hangers, and other concealment.

Apply piping insulation to both sides of pipe hangers. Insulate junctions with a special mastic mixture, glass cloth mesh tape, and mastic as previously specified.

Securely cement jacket laps, flaps, and bands in place with aluminum jacket sealant. Provide 6 inch wide minimum jacketing bands for butt joints.

Wherever possible, lap joints against the weather so that the water runs off the lower edge and in accordance with the pipe drainage pitch. Locate longitudinal laps on horizontal lines 45 degrees below the horizontal centerline and alternately staggered 1 inch. Lap jacketing material a minimum of 2 inches, circumferentially sealed with mastic, and strapped to provide a waterproof covering throughout. Locate straps 8 inches on center and pull up tight to hold jacketing securely in place. Use screws in addition to straps when necessary to obtain a waterproof covering.

Place extra straps on each side of supporting devices and at openings.

Where flanging access occurs, strap a chamfer sheet to the pipe at jacketing.

Stiffen exposed longitudinal edges of aluminum jacketing by bending a 1 inch hem on one edge.

Provide expansion joints for maximum and minimum dimensional fluctuations.

To prevent corrosion, do not allow the aluminum jacketing to come in direct contact with other types of metal.

At openings in jacket, apply an outdoor vapor-barrier coating for 2 inches in all directions. Apply jacketing while waterproofing is tacky.

Use screws at each corner of each sheet, at fitting jackets, and as necessary for the service. Place Number 7, 3/8 inch long, binding-head aluminum sheet metal screws through the mastic seal.

3.3.4 Type T-10, Mineral-Fiber Fill

Pack voids surrounding pipe with mineral-fiber fill.

3.4 CLOSEOUT ACTIVITIES

Final acceptance of the performed work is dependent upon providing Record Drawings details to the Contracting Officer. Include construction details, by building area, the insulation material type, amount, and installation method. An illustration or map of the pipe routing locations

SECTION 22 07 19 Page 10 may serve this purpose.

Provide a cover letter/sheet clearly marked with the system name, date, and the words "Record Drawings Insulation/Material" for the data. Forward to the Systems Engineer for inclusion in the Maintenance Database."

-- End of Section --

SECTION 22 07 19 Page 11