SIST ISO 8528-10:2023 PDF

Overview

SIST ISO 8528-10:2023 specifies acoustic test codes for measuring airborne noise from reciprocating internal combustion (RIC) engine driven generating sets. It defines how to determine the sound power level of the generator set and the emission sound pressure level at the workstation for constant- and variable-speed RIC-driven AC and DC generating sets used in fixed and mobile land and marine applications (excluding aircraft and propulsion for vehicles/locomotives). The standard provides a consistent, auditable basis for declaring, verifying and comparing noise emissions for manufacturers, test laboratories, purchasers and safety professionals.

Key topics and technical requirements

• Scope and applicability - RIC engine driven generating sets with rigid or flexible mountings; supplementary requirements may be needed for critical applications (e.g., hospitals, high-rise buildings).
• Selection of measurement method and accuracy grades - guidance on choosing between engineering grade (grade 2) and survey grade (grade 3) sound power measurements.
• Measuring equipment & calibration - requirements for instrumentation, calibration procedures and verification of acoustic adequacy.
• Measuring environment & background noise - criteria to assess test environment suitability and methods for correcting background noise.
• Definition of noise source & operating conditions - specifying the source under test, mounting, installation and operating modes during measurement.
• Reference box & measurement surface - rules for defining the reference box around the source and measurement surfaces (hemispherical, parallelepiped) including microphone orientation and reduction of microphone positions where appropriate.
• Measurement procedures - measurement of sound pressure levels, calculation of time-averaged levels, A-weighted sound power level and surface non-uniformity index.
• Uncertainty & guaranteed sound power level - evaluation of measurement uncertainty, statistical treatment and calculation of guaranteed sound power declarations.
• Emission sound pressure level at the workstation - locating workstation(s), microphone positions (standing, bending, crouching), normalization to reference meteorological conditions and reporting requirements.
• Annexes - normative application of ISO 3744 and ISO 3746 for generating sets and informative sound intensity methods.

Practical applications

• Product noise declaration and certification for generator manufacturers.
• Acoustic compliance testing and verification by independent labs.
• Noise-abatement planning and building acoustic design (specifying generating sets to meet site limits).
• Occupational health & safety assessments for operator exposure.
• Selection and procurement of generator sets for sensitive environments (hospitals, residential towers, marine installations).

Who should use this standard

• Generator set manufacturers and R&D teams
• Accredited acoustical test laboratories
• Acoustic and mechanical engineers
• Health & safety officers and compliance managers
• Building services consultants and equipment specifiers

Related standards

• ISO 3744:2010 (Sound power determination - engineering methods)
• ISO 3746:2010 (Sound power determination - survey methods)
• ISO 12001:1996 (steady noise source considerations)
• ISO 8528-13:2016 (design and verification aspects related to noise)

Keywords: SIST ISO 8528-10:2023, sound power level, emission sound pressure level, noise measurement, generating set, reciprocating internal combustion engine, acoustic testing, measurement uncertainty.