ISO 15664 pdf download.Acoustics — Noise control design procedures for open plant
1 Scope
This International Standard defines the procedures for noise control of mainly open plants. It is applicable to the following: – specification of procedures for noise control during engineering of a new plant and modification/extension of existing plants (construction noise procedures are outside the scope of this International Standard but should be considered); ? definition of responsibilities of parties involved, viz. “end-user”, “engineering contractor” and “equipment supplier”; – description of general procedures to arrive at noise requirements for individual equipment, on the basis of overall noise requirements for the plant. A schematic flowchart, reviewing the noise control process, is presented in annex A and a summary of action items is presented in annex B. NOTE Concerning specific engineering methods for the acoustic design and analysis of plants, use should be made of other standards and textbooks.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 1 996-1 , Acoustics — Description and measurement of environmental noise — Part1: Basic quantities and procedures ISO 1 996-2, Acoustics — Description and measurement of environmental noise — Part2: Acquisition of data pertinent to landuse ISO 3864, Safetycolours and safety signs
3 Terms and definitions
For the purposes of this International Standard, the following terms and definitions apply. 3.1 General terms 3.1.1 end-user party which initiates the project and ultimately owns or operates the plant, or pays for its design and construction NOTE The end-user will generally specify the technical objectives and/or requirements. 3.1.2 contractor party which carries out all or part of the design, engineering, procurement, construction and commissioning for the project 3.1.3 manufacturer supplier party which manufactures or supplies equipment and services to perform the duties specified by the contractor 3.1.4 work area any position not less than 1 m from equipment surfaces accessible to personnel, and any position where a worker’s ear may be exposed to noise in the normal course of his duty NOTE The work area includes any platform, walkway or ladder. 3.1.5 project specification document defining the scope of a project NOTE It can contain descriptions of the process, project management, responsibilities and engineering requirements. These include safety and environmental requirements. 3.1.6 governing authorities local, regional, national or other authorities that specify and enforce criteria for environmental and occupational health noise 3.2 Terms specific to noise 3.2.1 noise limit noise levels not to be exceeded and given as a sound power level, sound pressure level or noise exposure level 3.2.1.1 authority noise limits noise limits set by governing authorities 3.2.1.3 contractual noise limits noise limits set by the end-user as part of a legal contract between the end-user and the contractor, considering authority noise limits and company requirements 3.2.1.4 equipment noise limits noise limits set by an end-user or contractor for a manufacturer/supplier for an individual equipment item 3.2.2 tonal noise noise which is dominated by one or several clearly distinguishable tone(s) NOTE See ISO 1 996-2. 3.2.3 impulsive noise noise consisting of one or more bursts of sound energy of duration less than about 1 s NOTE See ISO 1 996-2 (environmental noise), ISO 1 999 (in-plant noise) and ISO 1 2001 (equipment emission). 3.2.4 fluctuating noise noise whose level varies continuously and to an appreciable extent during the period of observation [ISO 1 2001 :1 996, definition 3.1 9.1 ] 3.2.5 intermittent noise noise whose level abruptly drops to the level of the background noise several times during the period of observation [ISO 1 2001 :1 996; definition 3.1 9.2] NOTE The time during which the level remains at a constant value different from that of the ambient is of the order of 1 s or more.