ASTM E1222-22 PDF
Standard Test Method for Laboratory Measurement of the Insertion Loss of Pipe Lagging Systems
Standard Test Method for Laboratory Measurement of the Insertion Loss of Pipe Lagging Systems
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 5
- Дата публикации:
- 1 ноября 2022 г.
- Издание:
- E1222
- ICS:
- 17.140.20
SIGNIFICANCE AND USE 5.1 The insertion loss of a pipe lagging system depends upon the lagging system materials, the method used to apply the materials, the pipe wall thickness, the size and shape of the bare and lagged pipe, and the mechanisms causing noise radiation from the pipe. Insertion losses measured using this test method should be used with some caution. In the laboratory, measurements must be made under reproducible conditions, but in practical usage in the field, the conditions that determine the effective insertion loss are difficult to predict and they may lead to slightly different results. Insertion losses measured with this test method can be used successfully for acoustical design purposes. Insertion losses measured with this test method are most useful for pipes and lagging systems which are similar to those used in the laboratory configuration. 5.2 This test method may be used to rank-order pipe lagging systems according to insertion loss or to estimate the field insertion loss of pipe lagging systems installed in the field. 5.3 This test method assumes that pipe wall stresses resulting from different methods of supporting the test pipe in the laboratory do not have a significant effect upon the measured insertion loss. 5.4 Pipe lagging systems typically have small insertion loss, and sometimes negative insertion loss, at frequencies below 500 Hz. The results obtained at frequencies below 500 Hz may be somewhat erratic. Sound sources used with this test method normally have a low frequency limit in the range from 300 to 500 Hz. For these reasons, the lowest band of frequencies for which results are required is centered at 500 Hz. SCOPE 1.1 This test method covers the measurement of the insertion loss of pipe lagging systems under laboratory conditions. 1.2 A procedure for accrediting a laboratory for purposes of this test method is given in Annex A1. 1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses are provided for information only and are not considered standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Abstract
Overview
ASTM E1222-22: Standard Test Method for Laboratory Measurement of the Insertion Loss of Pipe Lagging Systems provides a systematic approach for quantifying the noise reduction (insertion loss) achieved when a pipe is wrapped with a lagging system. Developed by ASTM International, this standard sets out laboratory procedures and required reporting for measuring the effectiveness of insulation and soundproofing materials applied to piping. The method assists acoustical designers, specifiers, and manufacturers in evaluating and comparing different lagging systems under controlled laboratory conditions.
This standard is essential for professionals seeking accurate, reproducible measurements of insertion loss, helping to inform product selection and acoustical design in mechanical systems. It addresses laboratory measurement techniques, specimen installation, apparatus requirements, and considerations for reporting results.
Key Topics
- Insertion Loss Measurement: The core concept is measuring the reduction in noise radiated from a pipe after lagging (insulation) is installed, compared to the bare pipe.
- Controlled Laboratory Conditions: Measurements are taken in a reverberation room using standardized procedures for reproducibility.
- Apparatus and Setup: Details include requirements for the reverberation room, pipe assembly, sound sources, microphones, and measurement filters.
- Testing Frequency Range: Accurate results are emphasized for frequencies centered at 500 Hz and above, as lower frequencies can yield erratic results.
- Specimen Preparation: Guidelines for installing test specimens-including seams and joints-mimic field practice to ensure practical relevancy.
- Flanking Transmission: The method addresses the minimization and measurement of sound transmission via unintended paths, which could skew results.
- Reporting Requirements: The standard specifies what test conditions, specimen details, and data must be included in laboratory reports.
Applications
ASTM E1222-22 is widely used in scenarios such as:
- Product Development: Manufacturers apply this standard to develop and validate new pipe lagging systems, ensuring their products offer reliable noise reduction performance.
- Acoustic Design: Engineers utilize the measured insertion loss data for selecting appropriate pipe lagging materials in the design of building services and industrial facilities.
- Specification Compliance: Construction and engineering projects reference this standard when specifying noise control measures, ensuring that products meet recognized performance metrics.
- Laboratory Accreditation: Testing laboratories use the accreditation procedures outlined in the standard to demonstrate competence and compliance with best practices in acoustical measurement.
- Ranking and Comparison: The method enables comparative ranking of pipe lagging systems, supporting informed decisions in procurement and system upgrades.
Related Standards
ASTM E1222-22 references and aligns with several standards and documents that together support comprehensive acoustical testing:
- ASTM C423 - Test Method for Sound Absorption and Sound Absorption Coefficients by the Reverberation Room Method
- ASTM C634 - Terminology Relating to Building and Environmental Acoustics
- ASTM E90 - Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements
- ANSI S1.4 - Specification for Sound Level Meters
- ANSI S1.11 - Specification for Octave Band and Fractional-Octave-Band Analog and Digital Filters
- ASTM E548 - Guide for General Criteria Used for Evaluating Laboratory Competence (Withdrawn)
- ASTM E717 - Guide for Preparation of Accreditation Annex of Acoustical Test Standards
Practical Value
Implementing ASTM E1222-22 supports:
- Consistency and Reproducibility: Laboratories and manufacturers ensure reliable, comparable results across tests and facilities.
- Accurate Design Data: Acoustic consultants receive trustworthy insertion loss values for use in noise control engineering.
- Product Transparency: End-users and specifiers gain confidence in product claims about pipe noise reduction.
- Compliance and Best Practice: Using standardized test methods aligns projects with industry and international expectations, improving overall quality and regulatory compliance.
Keywords: ASTM E1222, pipe lagging systems, insertion loss, laboratory measurement, acoustical design, noise control, standard test method, building acoustics
Технические детали
- Технический комитет
- E33 - Building and Environmental Acoustics
- SKU
- ASTM E1222-22
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