1. purpose
1.1 This specification defines requirements for the supply of mineral wool for use as insulation in enclosures containing equipment or piping in the temperature range -254 to 316C
(-425 to 600F).
2. scope
2.1 This specification defines Air Products’ requirements for the physical, chemical, and mechanical properties of mineral wool, as well as requirements for testing, certification, packaging, and shipment.
3. related documents
3.1 Air Products Engineering Documents 4ACB-685002 pH Determination of Mineral Wool (Rockwool) 4ACB-685003 Packed Density Determination of Mineral Wool VDR Report Vendor Document Requirements
3.2 American Society for Testing and Materials (ASTM) C 177 Standard Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the Guarded-Hot-Plate Apparatus
3.3 British Standards Institution (BSI) BS 2972 Methods of Test for Inorganic Thermal Insulating Materials
3.4 Knowledge Library – (For Air Products Internal Use Only)
4. Definitions
4.1 Certificate of compliance: A document in which the manufacturer certifies that the products supplied are in compliance with the requirements of the order, without mention of any test results.
4.2 Inspection and testing, nonspecific: Inspection and testing performed by the manufacturer in accordance with his own procedures to assess whether products made by the same manufacturing process meet the requirements of the order. The products inspected and tested need not be the products actually supplied.
4.3 Inspection and testing, specific: Inspection and testing performed before delivery in accordance with the technical requirements of the order on the products supplied to verify whether these products meet the requirements of the order.
4.4 Inspection certificate: A document in which the manufacturer certifies that the products supplied are in compliance with the requirements of the order. It shall include the results of specific inspection and testing performed or supervised by authorized personnel independent of the manufacturing department and shall be validated by an authorized representative of this independent staff.
4.5 Random sample: A sample taken without bias, so that every item has an equal chance of inclusion. For the purpose of this document, a random sample shall consist of one portion of mineral wool extracted from the center of one shipping package or from the production line immediately preceding the packaging operation. Care shall be taken to ensure that the sample includes a proportional amount of shot and any other particles that separate while extracting the sample.
4.6 Representative sample: A sample resulting from planned action taken to ensure that specified proportions of its contents are drawn from different subportions. In this document, a representative sample shall mean a quantity of mineral wool composed of a minimum of three random samples. The total quantity shall be thoroughly mixed.
4.7 Specimen: A suitably sized portion of a sample that is used for a specific test. A specimen shall include a proportional amount of shot and any other particles that separate during mixing.
5. physical, chemical, and mechanical properties
5.1 Composition
5.1.1 Mineral wool shall be made only from mineral substances such as rock, slag, or glass, or a combination of these ingredients. It shall be processed from the molten state into an incombustible fibrous form. The fibers shall be mechanically processed into nodules (granulated).
5.1.2 The mineral wool may be treated to improve the physical and chemical properties. The addition of any substance other than rock, slag, or glass shall be done only with the approval of Air Products Cold Box Engineering.
5.1.3 The wool shall be of uniform texture. It shall not contain trim or waste from mineral wool boards, batts, or other products, and shall be free from foreign material and large nonfibrous particles.
5.1.4 The chemical composition shall be in accordance with Table 1.
Table 1 Chemical Composition
| Percent by Weight | ||
| Minimum | Maximum | |
| Silica (SiO2) | 35 | 48 |
| Alumina (Al2O3) | – | 20 |
| Iron Oxides (FeO and Fe2O3) | – | 25 |
| Calcium Oxide (CaO) | – | 41 |
| Magnesium Oxide (MgO) | – | 15 |
| Sulphur (S) | – | 1.6 |
5.2 Moisture Content
5.2.1 The moisture content, as measured in accordance with BS 2972, Section 11, shall not exceed 0.2% by weight at the time of packaging.
5.3 Organic Matter Content
5.3.1 The preferred organic matter content, as measured in accordance with BS 2972, Section 16, Method 1, is 0.2% by weight. The maximum allowable organic matter content is 0.4% by weight.
5.4 pH of Water Extract
5.4.1 The pH of a water extract, as measured in accordance with Air Products Specification 4ACB-685002 shall be in the range 6 to 9.5. Please see Knowledge Library – (For Air Products Use Only) for more information.
5.5 Shot Content
5.5.1 The coarse shot content, as measured in accordance with BS 2972, Section 14, shall not exceed 10% by weight.
5.6 Packed Density
5.6.1 The packed density, as measured in accordance with 4ACB-685003 shall not exceed 240 kgf/m3 (15 lbf/ft3).
5.7 Thermal Conductivity
5.7.1 The thermal conductivity of the mineral wool, when packed to a density in accordance with paragraph 5.6, and when tested in accordance with ASTM C 177 at a mean temperature of 0°C (32°F), shall not exceed 0.039 W/m·K (0.023 Btu/hr·ft·°F).
5.8 Mechanical Performance
5.8.1 When packed to a density in accordance with paragraph 5.6, the mineral wool shall neither settle after packing nor collapse under its own weight when tunneling through it.
6. testing by the manufacturer
6.1 Required Testing
6.1.1 Specific testing for packed density is required.
6.1.2 Specific testing for pH of water extract is required.
6.1.3 Specific testing for organic matter content is required for any mineral wool to which any organic materials are added.
6.1.4 Air Products reserves the right to require specific or nonspecific testing for any other properties given in this specification. The requirement for additional testing will be specified on the purchase order.
6.2 Other Testing
6.2.1 Testing not required per paragraph 6.1 shall be performed as deemed necessary by the manufacturer to meet the certification requirements given in Section 8.
6.3 Sample Types
6.3.1 Specimens taken from representative samples shall be used in tests to measure chemical composition, organic matter content, and pH of water extract.
6.3.2 Tests to measure shot content, moisture content, packed density, thermal conductivity, and mechanical performance may be performed on specimens taken from representative or random samples.
6.4 Frequency of Testing
6.4.1 Required testing shall be performed throughout the manufacture of mineral wool.
6.4.2 The test for packed density shall be performed once for each production run. The test shall be performed after the organic matter content and pH have been found to be in accordance with paragraphs 5.3 and 5.4.
6.4.3 The test for pH of water extract shall be performed once at the beginning of each production run and shall be repeated thereafter at a rate of one test for every 10 tonnes (or 10 tons) of mineral wool produced. At least two tests are required for each production run.
6.4.4 The test for organic matter content shall be performed once at the beginning of each production run and shall be repeated thereafter at a rate of one test for every 30 tonnes (or 30 tons) of mineral wool produced. At least two tests are required for each production run.
6.4.5 The frequency of other testing that Air Products might require will be specified on the purchase order.
7. Testing by Air Products
7.1 Testing in the Field
7.1.1 Air Products reserves the right to test mineral wool for pH of water extract in accordance with paragraph 5.4 upon arrival at the shipping destination. Mineral wool found to be outside of the specified pH range shall be replaced by the manufacturer at no cost to Air Products.
7.2 Testing at Air Products
7.2.1 Air Products reserves the right to require the manufacturer to submit samples to Air Products (or to an independent laboratory designated by Air Products) for testing for any property listed in Section 5. Mineral wool found not to be in compliance with this specification shall be replaced by the manufacturer at no cost to Air Products. The requirement to submit samples for testing by Air Products will be specified on the purchase order.
7.2.2 Air Products reserves the right to further require that shipment of the product be held by the manufacturer pending the outcome of such testing. The requirement to hold shipment will be specified on the purchase order.
7.2.3 Submitting Samples to Air Products
7.2.3.1 Representative samples, each with a total minimum weight of 0.5 kg (or 1 lb), shall be taken throughout the manufacture of mineral wool. One representative sample shall be taken at the beginning of each production run. One additional representative sample shall be taken for every 10 tonnes (or 10 tons) of mineral wool produced.
7.2.3.2 Each sample shall be placed in a clear, airtight plastic bag and sealed. Each bag shall be clearly tagged with the following information: Air Products purchase order number Destination of the mineral wool Size of the production run Date and time that the sample was taken Production run number for this purchase order (for example, 1st, 2nd, 3rd)
7.2.3.3 Instructions for shipping samples will be given on the purchase order.
8. certification and reporting
8.1 For each production run, the manufacturer shall complete the Manufacturer’s Basic Certification document given in Appendix A.
8.2 The manufacturer shall supply any other information which is requested on the VDR Report attached to the purchase order.
8.3 One copy of the documentation shall be sent to Air Products.
8.4 Instructions for use of the Manufacturer’s Basic Certification document are on the document. Other certification requirements, if required, will be on the VDR Report attached to the purchase order.
9. packaging and shipment
9.1 The mineral wool shall be packed in bags to a density not exceeding 190 kgf/m3 (12 lbf/ft3).
9.2 Bags shall be moisture, puncture, and tear-resistant, suitable for shipment by common carrier, and of a size and weight readily handled by a single person.
9.3 Bags used for overseas shipment of mineral wool shall have polyethylene (polythene) liners. Appendix A MANUFACTURER’S BASIC CERTIFICATION Sheet 1 of 3 Instructions to Air Products engineering Data Control: In the event that there is no VDR Report accompanying this document, contact the technician assigned to the project. Minimum distribution includes Cold Box Engineering, Purchasing, and Project Engineering. instructions to the manufacturer: Complete Parts 1 through 4 of this document. Supply any other certification requested on the VDR Report attached to purchase order. Send one copy of certification along with the mineral wool to the shipping destination specified on the purchase order. Send one copy of certification to: Air Products and Chemicals, Inc. Engineering Data Control Center 7201 Hamilton Boulevard Allentown, PA 18195-1501 S. A.
Part 1: Manufacturer Information Name: Address: c. Phone:
Part 2: Order Information Air Products purchase order number: Destination of mineral wool: Size of production run: Production run number for this purchase order (for example, 1st, 2nd, 3rd): Appendix A (continued) MANUFACTURER’S BASIC CERTIFICATION Sheet 2 of 3
Part 3: Inspection Certificate (see paragraph 4.4) Packed density as measured in accordance with this specification: pH as measured in accordance with this specification:
| Test | Test | ||||||
| Number | Date | Time | pH | Number | Date | Time | pH |
| 1 | 7 |
| 2 | 8 |
| 3 | 9 |
| 4 | 10 |
| 5 | 11 |
| 6 | 12 |
The manufacturer may, in lieu of completing the preceding table, attach a printout from a statistical process control (SPC) software package, only if the printout contains the date, time, pH, Air Products purchase order number, production run number for this purchase order (for example, 1st, 2nd, 3rd), and the authorized signature as described in paragraph 4.4. Were any organic materials added to the mineral wool during or after manufacture? If answer is no, skip to Part 4. If answer is yes, continue to Part 3d. Organic matter content as measured in accordance with this specification:
| % | % | |||||||
| Test | Organic | Test | Organic | |||||
| Number | Date | Time | Matter | Number | Date | Time | Matter |
| 1 | 4 |
| 2 | 5 |
| 3 | 6 |
The manufacturer may, in lieu of completing the preceding table, attach a printout from a statistical process control (SPC) software package, only if the printout contains the date, time, % organic matter, Air Products purchase order number, production run number for this purchase order (for example, 1st, 2nd, 3rd), and the authorized signature as described in paragraph 4.4. Part 3 Authorized Signature and Title (See paragraph 4.4): Date: Appendix A (continued) MANUFACTURER’S BASIC CERTIFICATION Sheet 3 of 3
part 4: certificate of compliance (see paragraph 4.1) This is to certify that the mineral wool furnished under the purchase order listed in Part 2 is in compliance with the requirements of that order. Part 4 Authorized Signature and Title: Date: