ENG Std 1602 Cold Insul

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Daikin America, Inc. SPECIFICATION Page 1 of 32

Decatur, Alabama Specification No.

COLD INSULATION SP-1602

Original Date: 01/12/00

Rev Date: July 27, 00

Revision No.: 1

THIS TITLE SHEET IS THE FIRST PAGE OF THE SPECIFICATION AND IS A RECORD OF EACH ISSUE OR REVISION. EACH

TIME THE SPECIFICATION IS CHANGED ONLY THE NEW OR REVISED PAGES NEED TO BE ISSUED. THE PAGES BEING

REVISED AND THE DESCRIPTION OF THE REVISION SHOULD BE NOTED UNDER REMARKS.

REV. DATE BY CHK. APPROVALS NO. REMARKS

DEPT PROJ CLIENT-DATE PGS.

1 7/27/00 ALL GENERAL REVISION

■

❏

ENTIRE SPECIFICATIONISSUED THIS REVISION

REVISED PAGES ONLYISSUED THIS REVISION

SPECIFICATION ISSUED FOR

❏ REVIEW AND COMMENT ❏

PURCHASE

❏ APPROVAL ■ CONSTRUCTION

❏ INQUIRY








Revision No.: 1

Table of Contents

Section Page

1.0 Scope .................................................................................... 2

2.0 General.................................................................................. 5

3.0 Codes, Standards and Regulations....................................... 5

4.0 Insulation Materials ............................................................... 6

5.0 Piping .................................................................................... 7

6.0 Vessels and Exchangers..................................................... 10

7.0 Pumps ................................................................................. 13

8.0 Standard.............................................................................. 14

Table ................................................................................... 15

Drawings ............................................................................. 16








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1.0 SCOPE

1.1 This specification covers materials and their application for the external coldinsulation of piping, vessels, pumps, exchangers, pumps and equipment.

1.2 Deviation from these specifications is permitted only when; (1) drawings and/or job scope instruct otherwise, and (2) prior approval is obtained in writing fromOwner’s Project Engineer.

1.3 The following organizations are referenced:

• OWNER: The owner or the owner’s representative.

• VENDOR/CONTRACTOR: The equipment fabricator, supplier, or subcontractor.

1.4 Brine storage tank and refrigeration unit insulation will be designed on a case bycase basis. Contact Daikin Project Engineer for design specifications.

1.5 In cases where fire protection on thermal credit is used as a design basis credit,special minimum requirements must be met as follows:

1.5.1 Minimum 2 layers insulation, both layers staggered and strapped on withstainless steel bands.

1.5.3 Exterior weather jacking must be stainless steel.

2.0 GENERAL

2.1 Cold piping, vessels and equipment shall be insulated to:

2.1.1 Control surface condensation whenever such condensation will cause

icing or present an operating, maintenance, or safety problem.

2.1.2 Conserve refrigeration by reducing the amount of heat gained byrefrigerated fluids.

2.1.3 Maintain process temperatures.

2.2 The Vendor/Contractor shall provide all labor, materials, tools, equipment,consumables, and competent supervision necessary to insulate the equipment in








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accordance with the contract documents, drawings, and these specifications.The insulation work shall be neat and performed in a workmanlike manner.

2.3 When there are disagreements between the specifications, drawings, and/or jobscope, the following order of precedence shall be followed:

2.3.1 The job scope and purchase order requirements

2.3.2 Piping isometric drawings

2.3.3 Piping plan drawings

2.3.4 Piping and Instrument Standard Drawings

2.3.5 Owner’s Insulation Drawings

The above disagreements shall be brought to the attention of the Owner’sProject Engineer.

2.4 In general, all hydrostatic testing shall be completed before application of

insulation materials. If a piping system is released to the insulator prior tohydrotesting, the contractor will be required to insulate these lines leaving theweld seams and threaded joints uninsulated. Weld seams and threaded jointswill have to be insulated after completion of the hydrotest.

2.5 All flanges, control valve stations, pump suction spools, etc. must be insulatedafter commissioning leak checking, but before cold fluid (Brine) introduction toavoid condensation problems.

2.6 Nameplates, code inspection plates, and stampings shall not be covered.Insulation and jacket opening at these markings shall be sealed against theentrance of water. In general, such items shall be mounted on brackets of such

dimensions so as to clear the insulation.

2.7 Support rings, angles, and band anchors will be fabricated and installed byothers, unless specified otherwise.

2.8 All insulation materials are to be stored in a safe dry place until ready for use.Damaged materials are subject to rejection by Owner.

2.9 Cleanup and housekeeping shall be performed in a continuous and promptmanner satisfactory to Owner.








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2.10 The contractor shall install jacketing immediately after installation of insulation,so as not to leave insulation exposed to moisture. Unjacketed insulation shall beprotected from the weather. Wet insulation shall not be installed and/or coveredwith jacketing. Wet insulation shall be replaced at the Vendor/Contractor’sexpense.

2.11 Metal jacketing shall be applied with the joints positioned 2:00 o’clock shedwater. Openings and gaps in the Jacketing shall be flashed, if necessary, andsealed with caulk.

2.12 On low temperature systems, care must be taken so all joints are sealed againstmoisture vapor penetration to prevent ice formation and possible damage to theinsulation.

2.13 Bands shall be machine tightened and sealed. The “waste” portion of the bandshall be cut flush with the seal. The bands shall be installed with sufficienttension to retain the band when cold, but not so much that permanent set canoccur during operation, or that jacket is damaged. Jacketing damaged or dentedby sealing tools shall be replaced. Replacement of damaged materials to be atVendor/Contractor’s expense.

2.14 Jacketing shall have an internal vapor barrier consisting of 40 lb. Kraft paper with1 mil polyethylene or of factory applied epoxy.

2.15 An asphalt vapor barrier will be applied in the shop prior to shipment for all fieldapplications.

2.16 Pipe jacketing shall be secured by stainless steel bands. One band shall belocated on each circumferential lap. The bands shall be 1/2” x .020” thickstainless steel with stainless steel seals.

2.17 Damaged insulation is subject to rejection by Owner and shall be replaced at the

Vendor/Contractor’s expense.3.0 CODES STANDARDS AND REGULATIONS

3.1 The seller shall control the quality of items and services to meet the requirementsof this specification, applicable codes and standards, and other procurementdocuments.

3.2 Referenced Codes and Standards

Number Subject








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Sponsor ASTM C-449 Spec. for Mineral Fiber Hydraulic

Setting Thermal Insulating andFinish Cement

ASTM C552 Spec. for Cellular Glass Block andPipe Thermal Insulation

ASTM C553 Spec. for Mineral Fiber Blanket andFelt Insulation

SPEC. M277-66-001 Spec. for PaintingSPEC. I-C-85-05-01 Spec. for application of cellular glass

insulation to base and shell of refrigerated liquid storage tanks.

4.0 INSULATION MATERIALS

4.1 Vessels, exchangers and equipment shall be insulated with Cellular Glassinsulation manufactured by Pittsburgh Corning Corporation.

4.1.1 AP Armaflex with 520 Adhesive and two coats of white Armaflex paint canbe specified on a case by case basis.

4.2 Cellular glass insulation shall conform to ASTM C552-91. Bore coatings shall beapplied as specified in attached drawings using Hydrocal B-11 gypsum cementor anti-abrasive 2A coating.

4.2.1 For use as an external vapor retarder, or for the purpose of freeze/thawdamage prevention use PITTWRAP CW30 Jacketing on straight runs,and PITTCOTE 300 Finish on the outer insulation surface of fittings,valves, and all other irregular surfaces, under the metal jacketing per DAIapproval.

4.3 Fiberglass blanket insulation used for contraction joints shall be lightweight andconform to ASTM C553-70. Blanket insulation shall be Type E glass fiber containing no organic binders such as TempMat or mineral wool.

4.4 Joints on block insulation shall be sealed with Pittseal 727 sealant. Laps on jacketing shall be sealed with sealant per 4.5.

4.5 Joint sealer (caulk) used for sealing mastic to metal joints, equipment to metal joints, and all openings cut in the metal jacketing shall be a heavy, semi-viscous








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type coating. The joint sealer shall be elastic and durable under extremeweather conditions and temperatures ranging from -225ºF to the operatingtemperature of the sealed surface.

4.6 Emboss aluminum rolls shall be used to jacket vertical vessel, horizontal vesselsand exchangers. The sheets shall be .020 inch minimum thickness.

4.6.1 Embossed aluminum sheets with moisture barrier shall be used to jacketvertical vessel shells and storage tank shells. The sheets shall be .020inch minimum thickness.

4.6.2 In the case where thermal credit or fire protection credit for the insulationis required Stainless Steel Sheathing is required. The Stainless SteelSheathing shall be 0.016 inch minimum thickness.

4.7 Emboss aluminum sheets and premolded elbows shall be used to jacket piping.The sheets shall be .016 inch minimum thickness and lined with an internalmoisture barrier per 2.14.

4.8 Bands, tie wire, and floating rings shall conform to Section 4.13 through 4.14 .

4.9 Pipe jacketing shall be secured at the joints by stainless steel bands only. Larger piping shall be banded on 12 inch maximum centers. No self tapping sheet metalscrews are to be used. One band shall be located on each circumferential lap.The bands shall be 1/2" x .020" thick stainless steel with stainless steel seals.

4.10 Band clips and "S" clips shall be type 300 stainless steel, #.020 gage, 3/4" x 6"bent to shape. Tape shall be Scotch #898 tape, a high tensile strength fiber reinforced tape available from 3M Corporation.

4.11 When required band expansion springs shall be 4+ inch long, 1-3/16 inch high,

3/8 inch wide, stainless steel type 304, Childers "Chilsprings" or Owner approvedequal.

4.12 Avoid securing jacketing with screws. If used, seal with caulk.

4.13 Tie wire shall be 16 gauge, soft annealed, and of 304 stainless steel material.

4.14 Floating rings used for securing insulation vessel heads shall be made from 3/8inch diameter steel rod. The inside diameter of the floating ring will be aminimum of 6 inch. However, in cases where there is a nozzle at the centroid of








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the head, the inside diameter of the floating ring shall be such that the ring willpass over the nozzle flange.

4.15 Factory preformed insulation to be used on all piping, pipe fittings, vessels,exchangers, heads, etc.

5.0 PIPING

5.1 Tie sectional pipe insulation shall be secured in place with stainless steel bandsor fiberglass tape (section 4.10) spaced on 12 inch maximum centers. Eachlayer of insulation shall be banded. Care shall be taken to eliminate all gaps.Large voids shall not be filled with joint sealer. Gaps shall be eliminated byrefitting or replacing the insulation.

Double layer of insulation shall be installed when the following condition(s) exist:

· Operating temperature is below -50°F.

· Insulation requirements exceed 3 inches on Tanks and Vessels.

5.2 Vapor stops shall be provided at midpoint between contraction joints andadjacent to each flange. Vapor stops shall consist of a 1/16 inch thick coat of

joint sealer applied directly to the pipe 3 inches wide and coming through thecircumferential joints of pipe insulation where butted together and coated with

joint sealer.

5.4 The pipe insulation covering shall be beveled at a 45° angle to the pipe at allflanges or valves. The bevel shall be a sufficient distance from the flange toallow removal of the bolts without damage to the insulation. This bevel shall bevapor sealed with mastic weatherproofing prior to installing flange or valveinsulation.

5.5 Valves and flanges shall be insulated with and provide coverings that can beeasily removed without destroying the covering or the pipe insulation and itsvapor barrier. Flanges and valves shall be covered with insulation, which is sizedto fit over the pipe insulation. It shall be applied in two pieces, sealed withPittseal 727 for vapor sealing. The two halves shall then be sealed to matchother, to the pipe jacket and to the valve bonnet, etc. The two halves shall bebanded together. Valves shall be insulated up to and including the packinggland. Voids shall be filled with loose insulation. See Dwg. # 1.










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5.14.3 A suitable cushion material such as a one inch thick layer of fiberglass isplaced between the vapor barrier and the aluminum jacket. The cushionlayer must be securely fastened with an adhesive prior to the installationof the jacketing. Special care must be taken to prevent the puncturing of the vapor barrier during installation of the rivets.

5.15 Lines and equipment operating below 0°F and located where an operator in thenormal course of his work might be burned will be insulated. Such insulationshall be labeled (Ic) on the drawings and shall be terminated 7'x1" from grade or operating platform. Insulation thickness shall be in accordance with thedrawings. This insulation shall be applied and finished as outlined for coldpiping. Where insulation is stopped, it shall be beveled to the pipe and sealedwith a sealant the last 6” between the pipe and insulation, and to the ends of theinsulation to waterproof it.

6.0 VESSELS AND EXCHANGERS

6.1 Prior to the application of any insulation, surfaces shall be thoroughly cleaned of grease, dirt, rust and scale.

6.2 Factory formed insulation shall be applied to the clean dry surfaces to thethickness specified in Table 2. The insulation blocks shall be applied to the shellsurface with end joints staggered and edges butted tightly together. All edgesand ends of each 1 layer, as well as the side facing the equipment surface of theouter layer shall be sealed with a uniform trowel coat of joint sealer. Double layer insulation shall be installed when:

• Below -50°F, or

• At contraction joints, or

• Insulation requirements of 3” or more

The block shall be applied in staggered joint construction so that no jointscoincide with the inner layer joints. Each layer of insulation shall be held in placewith bands spaced on 12 inch centers. Bands and seals shall be embedded intothe insulation.

6.4 Fixed heads on vertical and horizontal vessels and exchangers shall be insulatedthe same as shells except the outer layer of insulation will be secured using acentral floating ring with bands radiating from the ring to the first shell band near








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the vessel or exchanger tangent line. The radiating bands shall be spaced on 12inch centers at the first shell band. The floating ring and bands shall beembedded into the insulation. See Drawing # 15 for general construction details.

6.5 In lieu of using the floating ring system, fixed heads on horizontal vessels andexchangers may by be insulated boxing in the head. This shall be accomplishedextending the shell insulation beyond the tangent line far enough that the outer surface of the end cap insulation is flush with the end of the shell insulation.Voids between the end cap and head shall be packed with loose insulation.

6.6 Flanged heads will be boxed in using the procedure above. In addition, the shellinsulation shall be beveled 45° down to the shell surface on each side of theflange. A sufficient distance shall be allotted between the bevel and the flange topermit removal of the bolts. A vapor barrier shall be applied to the bevelextending 1 inch over the equipment surface. Block insulation shall then beplaced over the flange connecting the two bevels. (See Drawing # 7).

6.7 Vertical vessel skirts shall be insulated down to the fireproofing on the outside.The inside skirt insulation shall extend downward from the insulated bottom heada distance not less than four times the head insulation thickness but in no case

less than one foot. The inside skirt insulation shall be foamed in place. Thefalse bead, when required, shall be provided by others.

6.8 Vessels supported on metal saddles shall have the insulation extended downover the saddle to the top of the concrete support. The top of the concrete shallbe coated with joint sealer before applying the insulation.

6.9 Insulation shall be neatly beveled 45° back to the vessel surface at all nozzles,manways, and other connections and at the nameplate on the vessel. Bevelsshall be completely sealed with a vapor barrier to prevent moisture from enteringbehind the Jacket. Manways shall be provided with removable covers. SeeDrawing # 12 for details.

6.10 All vessel projections such as ladder lugs, platform knee braces, etc. shall beinsulated for a distance at least four times the specified thickness of theinsulation.

6.11 Aluminum Jacketing shall be used to cover vessels and exchangers. SeeSection 5.1 through 5.14 for jacketing procedure.

6.11.1 Embossed aluminum sheets with moisture barrier shall be used to jacketvertical vessel shells and storage tank shells. The sheets shall be .020








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inch minimum thickness.

6.11.2 In the case where thermal credit or fire protection credit for the insulationis required Stainless Steel Sheathing is required. The Stainless SteelSheathing shall be 0.016 inch minimum thickness.

6.12 Jacket shall be lapped at least 4 inches or two corrugations at all joints. The jacket shall be secured with 3/4 inch stainless steel bands spaced on 2'x1"centers. These bands shall be located for maximum strength "S" clips shall beused to secure the horizontal seams of vertical vessels and shall be spaced on12 inch centers.

6.14 At expansion joints, the topsheet of corrugated metal shall overlap theunderneath sheet by at least 6 inch. The two sheets shall not be fastenedtogether in order that the shell expansion will not cause buckling in the Jacketing.

6.15 Jacketed heads shall be prefabricated and installed to be water tight. Sheetmetal screws shall not be used unless a 1 inch thick layer of fiberglass insulationis applied under the jacketing to prevent the sheet metal screws from puncturingthe vapor barrier. Screw length shall be sized accordingly.

6.16 Nozzles, manways and other projections shall be flashed and sealed with caulk.

6.17 Cold insulation requirements for brine tanks shall be in accordance withPittsburgh Corning Spec. # I-C-85-05-01.

7.0 PUMPS

7.1 Pumps and other irregular shaped equipment items operating at sub-atmospherictemperatures shall be insulated the control of fluid temperature or surfacecondensation. The items shall be insulated to the thickness specified in Table 1.

7.2 The inner course of insulation shall be tied in place with tape or wire, and theends loosely butted. If there is only one course, it shall be treated as an outer course. The outer course of insulation shall be tightly butted with staggered

joints in relationship to the inner course, fastened and vapor sealed. If tape isnot strong enough to hold the outer course of insulation onto larger surfaces prior to the installation of the vapor barrier, floating rings may be used if they arecompletely embedded in the insulation and a mastic sealant applied completelyover them to restore a smooth surface to the head. A vapor barrier shall beapplied over the insulation as described in 5.5.








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7.3 The insulation adjacent to casing flanges, valves, etc., shall be bevel at a 45degree angle to permit removal of flange bolts, valves, etc. A mastic vapor barrier shall cover the bevel and extend a minimum of 1 inch onto the equipmentsurface.

7.4 Boxing of simple encasement type over irregular surfaces is acceptable.








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8.0 STANDARD DRAWINGS AND TABLES

8.1 Tables

TABLE DESCRIPTION

1 Design Thickness in Inches for Cold Insulation (Cellular Glass)

8.2 Standard Drawings

Standard Drawings No.Description

1 Insulation of Valves and Fittings2 Contraction Joint-Horizontal3 Vertical Pipe Weather-Jacketing4 Insulation of Piping-Double Layer 5 Insulation of Support Ring & Contraction Joint-

Vertical Piping6 Contraction Joint at Flange

7 Insulation of Flange8 Pipe Support9 Insulation of Piping-Single Layer

10 Typical End Cap Construction11 Vertical Nozzle Insulation12 Insulation of Manways13 Insulation of Bottom Head14 Insulation of Stiffening Ring15 Insulation of Heads16 Insulation of Horizontal Vessel17 Insulation of Vertical Vessel



TABLE I

DESIGN THICKNESS IN INCHES FOR COLD INSULATION(CELLULAR GLASS)

NOMINAL 70°F 29°F *0°F -26°F -76°F -126°F -176°FPIPE TO TO TO TO TO TO TOSIZE 30°F 1°F -28°F -75°F -128°F -175°F -225°F

.5 1.5 1.5 2.0 2.5 3.0 3.5 4.01.0 1.5 2.0 2.0 2.5 3.5 3.5 4.01.5 1.5 2.0 2.0 2.5 3.5 3.5 4.02.0 1.5 2.0 2.5 3.0 4.0 4.0 4.53.0 1.5 2.0 2.5 3.5 4.0 4.0 5.04.0 1.5 2.5 3.0 3.5 4.0 4.0 5.06.0 2.0 2.5 3.0 3.5 4.5 5.0 5.5

8.0 2.0 2.5 3.0 4.0 4.5 5.5 6.510-12 2.0 2.5 3.0 4.0 5.0 6.0 6.514-16 2.0 3.0 3.5 4.5 5.5 6.0 7.0

18 2.0 3.0 3.5 4.5 5.5 6.5 7.020 2.0 3.0 3.5 4.5 5.5 6.5 7.0

30-36 2.0 3.0 3.5 5.0 6.0 7.0 7.5FLAT 2.0 3.0 4.0 5.5 6.5 8.0 9.0

1. Ambient conditions: Temperature = 90.0°F, 7.5 mph wind, E = 0.4.

2. The above table is designed to limit heat gains to 9 BTU/hr./sq.ft.

3. Apply double layer insulation:

• Below -50°F.

• At contraction joints

• PSV’s

• Greater than or equal to 3” thickness

• Thermal credit / fire protection requirements

*4. Use this column for both A” and “B” brine systems.

3



DRAWING #1INSULATION OF VALVES AND FITTINGS



DRAWING #2CONTRACTION JOINT - HORIZONTAL



DRAWING #3VERTICAL PIPE WEATHER JACKETING



DRAWING #4INSULATION OF PIPING - DOUBLE LAYER



DRAWING #5INSULATION OF SUPPORT RNG AND CONTRACTION JOINT-VERTICAL PIPING



DRAWING #6CONTRACTION JOINT AT FLANGE



DRAWING #7INSULATION OF FLANGE



DRAWING #8PIPE SUPPORT



DRAWING #9INSULATION OF PIPING - SINGLE LAYER



DRAWING #10TYPICAL END CAP CONSTRUCTION



DRAWING #11VERTICAL NOZZLE INSULATION



DRAWING #12INSULATION OF MANWAYS



DRAWING #13INSULATION OF BOTTOM HEAD



DRAWING #14INSULATION OF STIFFENING RING



DRAWING #15INSULATION OF HEADS



DRAWING #16INSULATION OF HORIZONTAL VESSEL



DRAWING #17INSULATION OF VERTICAL VESSEL

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ENG Std 1602 Cold Insul