Table of Contents
| Section | Title | Page |
| Purpose | 2 | |
| Scope | 2 | |
| Related Documents | 2 | |
| Definitions | 2 | |
| Waivers | 3 | |
| Warranty | 3 | |
| Materials | 3 | |
| Accessory Materials | 4 | |
| Insulation Thickness and Limits | 5 | |
| Change Log | 6 | |
| Standard Insulation – Minimum Thickness | 6 | |
| Table A1/01, Insulation Materials and Names of Suppliers (USA) | 7 | |
| Table A2/01, Names and Addresses of Insulation Material Suppliers (USA) | 8 | |
| Information Sheet for Alternative Material Requests | 9 | |
| Certificate of Conformity | 10 | |
| Insulating Material Calculation Worksheet |
1. PURPOSE
1.1 This global engineering specification defines and describes the minimum requirements for “Field‑I” insulation systems for use on cold and cryogenic piping.
2. SCOPE
2.1 This specification applies to “Field-I” insulation that operates between -196° and 38°C (-320° and 100°F).
2.2 This specification applies to systems that will be installed outdoors, aboveground, and subject to sunlight, temperature extremes, and other ambient weather conditions.
2.3 Fully described and detailed alternate materials or methods of construction may be presented by the supplier for Air Products’ consideration and approval.
2.4 This insulation material is identified on drawings with the symbols: Q1 – cryogenic piping for the prevention of heat gain (see 4WPI-INS023)
3. RELATED DOCUMENTS
3.1 Air Products Engineering Documents 4WPI-INS023 Installation of “Field-I” Thermal Insulation of Cold and Cryogenic Piping – Material Symbol Q1
3.2 American Society for Testing and Materials (ASTM) C 518 Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus D 1621 Standard Test Method for Compressive Properties of Rigid Cellular Plastics D 1622 Standard Test Method for Apparent Density of Rigid Cellular Plastics D 6226 Standard Test Method for Open-Cell Content of Rigid Cellular Plastics D 3014 Standard Test Method for Flame Height, Time of Burning, and Loss of Mass of Rigid Thermoset Cellular Plastics in a Vertical Position E 84 Standard Test Method for Surface Burning Characteristics of Building Materials
3.3 All standards and documents referred to herein shall be the latest edition and addenda in effect at the time of purchase, unless otherwise stated.
4. definitions
4.1 Air Products and Chemicals, Inc. and its subsidiary and associated companies will be referred to herein as Air Products.
4.2 The insulation contractor who supplies and installs the insulation will be referred to herein as the contractor.
4.3 Approved equal in this specification means “approved in writing by Air Products.”
4.4 All temperatures and dimensions in the text of this document are given in metric units with US customary units in parenthesis. In the figures, dimensions are only given in mm for clarity (divide by 25.4 to convert mm to inches).
4.5 “Field-I” thermal insulation is a polyurethane insulation with a fiberglass jacket for a vapor barrier and protective jacket. “Field-I” differs from “Pre-I” insulation in that it is installed in the field after pipe erection, inspection, and pressure testing is complete.
5. waivers
5.1 Applications for waivers of the requirements contained in this specification, or to supply alternative items other than those listed, shall be made in writing to the Air Products representative, who will obtain approval and written authorization from the relevant Air Products manager prior to order, supply, or installation by the contractor.
5.2 In order that any alternative material requested by the contractor may be evaluated, the contractor shall complete and submit an “Information Sheet for Alternative Material Request” in Appendix B, providing full details of the properties of the recommended alternative.
6. warranty
6.1 Upon completion of the installation, the contractor shall provide to the Air Products site manager a completed “Certificate of Conformity” as shown in Appendix C listing all materials used.
7. Materials
7.1 Supply
7.1.1 The contractor shall supply all insulating materials and accessory materials unless otherwise stated in the contract. Appendix A provides full names and addresses of suppliers. As materials may differ in availability by location of supply, Appendix A contains lists per geographical area of supply. The location of supply will be stated in the contract documents from Air Products. Appendix D provides guidance to the contractor in estimating the following materials to be ordered from the respective suppliers listed in Appendix A. Pipe Insulating Material [1] Cavity Fill Material [3] Fiberglass Jacket Adhesive [5] Fiberglass Jacket [10]
7.1.2 Whenever any material is specified by manufacturer’s name, only that material shall be used.
7.1.3 All materials are indicated in the text and figures of this and other specifications by the numbers shown in square brackets, thus [0], that refer to the materials in Sections 7 and 8, and are identified in Appendix A of this specification.
7.2 Pipe Insulating Material [1]
7.2.1 Insulation shall be two-component, rigid polyurethane foam with the following properties: Density of 38 kg/m3 (2.4 lb/ft3) measured according to ASTM D 1622. Closed-cell content of 86 to 91% determined by ASTM D 6226. Aged thermal conductivity of 0.024 to 0.032 W/m-K (0.165 to 0.225 Btu-inch/hr-ft2-°F) at 24°C (75°F) determined by ASTM C 518. Minimum compressive strength of 140 kPa (20 psi) determined by ASTM D 1621.
7.2.2 Preformed 3 meter (9.84 feet) long sections shall be supplied. The supplier may control the insulation’s expansion by employing molds or may trim the insulation layer to result in a uniform thickness.
7.2.3 Longitudinal and circumferential gaps between adjacent insulation pieces shall be tapered a 8 mm (1/4 in) wide gap at the inside diameter of the pipe and a 13 mm (1/2 in) wide gap at the outside of the insulation. This is to prevent air from becoming trapped while filling the cavity with the foam kit.
7.2.4 Acceptable materials and suppliers are listed in Appendix A.
8. accessory Materials
8.1 Cavity Fill Material [3]
8.1.1 The foam kit shall be a two-component polyurethane foam spray. One-component sprays cannot be used.
8.1.2 Acceptable materials and suppliers are listed in Appendix A.
8.2 Auxiliary Cavity Fill Material [3b]
8.2.1 Contraction joint and cavity fill material shall be a 16 kg/m3 (1 lb/ft3) fibrous glass blanket or unbonded, loose, mineral fiber (rock) wool.
8.2.2 Acceptable materials and suppliers are shown in Appendix A.
8.3 Fiberglass Jacket Adhesive [5]
8.3.1 The adhesive shall be an adhesive for bonding fiberglass pipe and fittings.
8.3.2 Acceptable materials and suppliers are listed in Appendix A.
8.4 Insulation Joint Sealer [7]
8.4.1 Insulation joint sealer (see paragraph 7.1.2) shall be a nonshrinking, nonhardening compound.
8.4.2 Acceptable materials and suppliers are listed in Appendix A.
8.5 Insulation Banding Tape [9]
8.5.1 Insulation banding tape shall be a 19 mm (3/4 in) wide, self-adhesive, fiberglass-reinforced tape.
8.5.2 Acceptable materials and suppliers are listed in Appendix A.
8.6 Fiberglass Jacket [10]
8.6.1 Jacketing shall be glass-fiber reinforced, plastic resin (fiberglass) pipe using polymer resin.
8.6.2 Vapor barrier jacketing shall have UV inhibitors to prevent degradation from sunlight.
8.6.3 Vapor barrier jacketing shall be gray to minimize surface absorptivity.
8.6.4 This fiberglass jacketing also functions as the vapor barrier.
8.6.5 Acceptable materials and suppliers are listed in Appendix A.
8.7 Metal Bands [11]
8.7.1 Metal bands shall be 12 mm (1/2 in) wide x 0.5 mm (0.020 in) thick for 500 mm (20 in) outside diameter of insulation and smaller or 20 mm (3/4 in) wide x 0.6 mm (0.024 in) thick for larger than 500 mm (20 in) outside diameter, stainless steel with matching seals.
8.7.2 Acceptable materials and suppliers are listed in Appendix A.
8.8 Releasing Agent [26]
8.8.1 The releasing agent shall be a clear plastic wrap. The wrap must be clear to provide visibility when filling the cavities between pieces the insulation.
8.8.2 Acceptable materials and suppliers are listed in Appendix A.
8.9 Permanent End Seals [28]
8.9.1 Permanent end seals shall be provided by the contractor at termination points of the “Field-I” insulation to provide a proper vapor barrier. These will be located on the engineering drawings sent to the contractor.
8.9.2 Permanent end seals shall be flat plate constructed of the same material as the fiberglass jacket [10].
9. insulation thickness and limits
9.1 The insulation thickness and the extent to which the insulation shall be provided and installed on piping shall be as stated on the Insulation Summary and/or isometrics and drawings provided by Air Products. The thickness may be varied by + 3 mm (1/8 in) to suit the manufacturer’s nearest available standard sizes. When the insulation thickness stated is unavailable, the next larger thickness available shall be used.
9.2 When the insulation thickness is not stated in paragraph 9.3, the piping that requires insulation shall be insulated with a thickness determined on a case-by-case basis in consultation with the Air Products representative.
9.3 Insulation thickness for “Field-I” insulation shall be as specified in Table 1 below:
Table 1 Standard Insulation – Minimum Thickness
| Nominal Carrier Pipe Diameter | Insulation Thickness | ||
| in | mm | in | mm |
| 1 | 25 | 3 1/2 | 89 |
| 1 1/2 | 40 | 4 | 102 |
| 2 | 50 | 4 | 102 |
| 2 1/2 | 65 | 4 1/2 | 114 |
| 3 | 80 | 4 1/2 | 114 |
| 4 | 100 | 4 1/2 | 114 |
| 6 | 150 | 6 | 152 |
| 8 | 200 | 6 | 152 |
Appendix A Insulation Material Suppliers Table A1/01 Insulation Materials and Names of Suppliers (USA)
| Item No. | Material Description | Acceptable Materials | Manufacturer |
| [1] | Pipe Insulating Material | Preformed rigid polyurethane | Perma-Pipe, Inc. |
| [3] | Cavity Fill Material | Froth-Pak | Dow Chemical |
| Touch N Seal 2 Component Insulating Foam | Convenience Products | ||
| [3b] | Auxiliary Cavity Fill Material | MicroliteÒ Type 100 plain | Johns Manville |
| Duct Wrap, Unfaced | Knauf Fiber Glass GmbH | ||
| All-Service Duct Wrap, Type 100 unfaced | Owens Corning Fiberglas Corporation | ||
| [5] | Fiberglass Jacket Adhesive | Bondstrand RP105B Adhesive Kit | Ameron International |
| [7] | Insulation Joint Sealer | Chilbyl CP-76 | Foster Products Corporation (Childers Brand Products) |
| Foster Foamseal Sealant
30-45 |
Foster Products Corporation (Foster Brand Products) | ||
| [9] | Insulation Banding Tape | 898 ‘Scotch’ Filament Tape | 3M Company |
| [10] | Fiberglass Jacket | Fiberglass pipe | Perma-Pipe, Inc. |
| [11] | Metal Bands | See paragraph 8.7 | Band-It Idex, Inc. |
| See paragraph 8.7 | Foster Products Corporation (Childers Brand Products) | ||
| See paragraph 8.7 | Gerrard Packaging Systems | ||
| [26] | Releasing Agent | See paragraph 8.8 | various |
| [28] | Permanent End Seals | Fiberglass plate | Perma-Pipe, Inc. |
Appendix A (continued) Insulation Material Suppliers Table A2/01 Names and Addresses of Insulation Material Suppliers (USA)
| 3M Company
St. Paul Minnesota USA Tel: (001) 800 364 3577 |
Ameron International
Fiberglass Composite Pipe Division Americas P.O. Box 878 Burkburnett , TX 76354 Tel: (940)-569-1471 |
| Band-It-Idex, Inc.
Denver Colorado USA Tel: (001) 303 320 4555 |
Convenience Products
866 Horan Drive Fenton, MO 63026 USA Tel: (800) 325-6180 |
| Dow Chemical Company
1881 West Oak Parkway Marietta, GA 30062 USA Tel: 1-800-800-3626 |
Foster Products Corporation
subsidiary of the H. B. Fuller Company Foster and Childer Brand Products Suite C7 601 West Campus Drive Arlington Heights, IL 60004 Tel: (001) 800 231 9541 |
| Gerrard & Company
Des Plaines Illinois USA Tel: (001) 800 800 6763 |
Perma-Pipe, Inc.
subsidiary of MFRI, Inc. 7720 North Lehigh Avenue Tel: (001) 847 966 2235 |
Appendix B Information Sheet for Alternative Material Requests
| Original Material Specified |
| Reference No. |
| Reason for Change Request |
Proposed Alternative Material (when appropriate, provide national standard, e.g., ASTM, BS, DIN)
| Name |
| Manufacturer/Supplier |
| General Description |
| Use or Application |
| Application Method (brush, trowel, or other) |
| Operating Temperature Limits +/-°C (or °F) |
| Physical Form (liquid, solid) |
| Color |
| Specific Gravity |
| Solids Content |
| Solvent |
| Water Vapor Permeance |
| Flash Point |
| Fire Rating |
| Health and Safety Precautions |
| Remarks |
REQUESTED BY
| Company | Date |
| For Use on Project | Project No. |
APPROVED BY AIR PRODUCTS
| Signed | Date |
| Position |
Appendix C Certificate of Conformity
| Contract Reference | Air Products Project No. |
The following insulating materials according to Air Products Engineering Specification 4WPI-INS006 were supplied:
| Ref. No. | Description | Manufacturer | Mfg. Ref. No. |
| [1] | Pipe Insulating Material | ||
| [3] | Cavity Fill Material | ||
| [3b] | Auxiliary Cavity Fill Material | ||
| [5] | Fiberglass Jacket Adhesive | ||
| [7] | Insulation Joint Sealer | ||
| [9] | Insulation Banding Tape | ||
| [10] | Fiberglass Jacket | ||
| [11] | Metal Bands | ||
| [26] | Releasing Agent | ||
| [28] | Permanent End Seals |
| Contractor’s Name |
| Signed by | Date |
Appendix D Insulating Material Calculation Worksheet
| Pipe Size mm (NPS) | Number of Elbows per Pipe Size | Number of Tees Per Pipe Size | Equivalent # of 3 Meter Sections for Elbows & Tees | Straight Length (Meters) per Pipe Size | Number of 3 Meter Sections Required for Straight Length |
Total Number of 3 Meter Sections Required |
| — | E | T | M1 = (E + T)/4 | L | M2 = L/3 | MT = M1 + M2 |
| 25 (1) | ||||||
| 40 (1 ½) | ||||||
| 50 (2) | ||||||
| 75 (3) | ||||||
| 100 (4) | ||||||
| 150 (6) | ||||||
| 200 (8) |
Order Quantities: Estimated Pipe Insulating [1] and Fiberglass Jacket [10] Material Required:
The total number of 3 meter sections to be ordered per pipe size should be rounded up to the next number that is evenly devisable by 4. Example: Pipe Size = 50 mm (2″ NPS) # of Elbows (E) = 3 # of Tees (T) = 5 M1 = (E+T) / 4 = (3 + 5) / 4 = 2 sections Length = 33 meters M2 = L / 3 = 33 / 3 = 11 sections MT = M1 + M2 = 2 + 11 = 13 three meter sections Order Quantity = 13 + 3 = 16 (Sixteen (16) is the next quantity evenly devisable by 4) Estimated Cavity Fill Material [3] Required:Cavity Fill Material (Foam packs) to be ordered = (Number of 3 meter sections ordered) x 3 Example: Cavity Fill Material (Foam Packs) = Sixteen (16) 3 meter sections x 3 = 48 Estimated Fiberglass Jacket Adhesive [5] Required: Fiberglass Jacket Adhesive to be ordered = (Number of 3 meter sections ordered) x 1 Example: Fiberglass Jacket Adhesive = Sixteen (16) 3 meter sections x 1 = 16