Metalliteollisuuden Standardisointiyhdistys

 

This document specifies a method for calculating the expected hearing threshold levels of adult populations due to various levels and durations of noise exposure; it provides the basis for calculating the risk of hearing impairment according to various formulae when the hearing threshold levels at commonly measured audiometric frequencies, or combinations of such frequencies, exceed some certain values. This document is based on statistical data and therefore cannot be applied to the prediction of the hearing loss of individual persons. The measure of exposure to noise for a population at risk is the equivalent continuous A-weighted sound pressure level normalized to an 8 h working day, or A-weighted noise exposure level, Lp,A,8 h or L p,A,8?h ' , for a number of years of exposure. This standard applies to noise at frequencies less than 10 kHz that is steady-state, intermittent, fluctuating, irregular, or complex with A-weighted noise exposure levels between 70 and 100 dB (daily A-weighted sound exposures between 0,115 × 103 and 115 × 103 Pa2s). Formulae are presented to calculate the statistical distributions of hearing threshold levels at a range of audiometric frequencies due to exposure to noise as a function of level of noise exposure and duration of exposure (in years). Values of effect of noise, N, do not distinguish between male and female populations. The database for values of N in Table 1 was derived from people who typically started work around age 20 and whose noise exposures continued for many years; thus, this database is most accurate for populations of workers whose age minus years of exposure is about 20. To calculate hearing threshold levels and also to calculate the risk of acquiring hearing impairment due to noise exposure, it is necessary to make use of a database for age-associated hearing threshold levels for a comparable population. This document includes a highly screened otologically normal population (in accordance with ISO 7029) and examples of unscreened populations of five typical industrialized societies. The users of this document may choose a comparable population according to their particular requirements.

 

This document specifies how a preliminary welding procedure specification (pWPS) for hyperbaric wet welding is qualified by welding procedure tests.

 

ISO 17201-4:2006 provides a computational model for determining the acoustical source level of projectile sound and its one-third-octave-band spectrum, expressed as the sound exposure level for nominal mid-band frequencies from 12,5 Hz to 10 kHz. It also gives guidance on how to use this source level to calculate the sound exposure level at a receiver position. ISO 17201-4:2006 is intended for calibres of less than 20 mm, but can also be applied for large calibres. Additionally, the data can be used to compare sound emission from different types of ammunition used with the same weapon. This part of ISO 17201 is meant for weapons used in civil shooting ranges, but is also applicable to military weapons.

 

 

This document establishes requirements for the design; material selection and characterization; fabrication; testing and inspection of all structural items in space systems, including expendable and reusable launch vehicles, satellites and their payloads. This document, when implemented for a particular space system, will assure high confidence in achieving safe and reliable operation in all phases of its planned mission. This document applies specifically to all structural items, including fracture-critical hardware used in space systems during all phases of the mission, with the following exceptions: adaptive structures, propulsion systems, nuclear systems, and thermal protection systems.

 

ISO 16828:2012 defines the general principles for the application of the time-of-flight diffraction (TOFD) technique for both detection and sizing of discontinuities in low alloyed carbon steel components. It can also be used for other types of materials, provided the application of the TOFD technique is performed with necessary consideration of geometry, acoustical properties of the materials, and the sensitivity of the examination. Although it is applicable, in general terms, to discontinuities in materials and applications covered by ISO 16810, it contains references to the application on welds. This approach has been chosen for reasons of clarity as to the ultrasonic probe positions and directions of scanning. Unless otherwise specified in the referencing documents, the minimum requirements of ISO 16828:2012 are applicable. Unless explicitly stated otherwise, ISO 16828:2012 is applicable to the following product classes as defined in ISO 16811: a) class 1, without restrictions; b) classes 2 and 3, restrictions apply as stated in Clause 9. The inspection of products of classes 4 and 5 requires special procedures. These are also addressed in Clause 9. Techniques for the use of TOFD for weld inspection are described in ISO 10863. The related acceptance criteria are given in ISO 15626.

 

ISO 16809:2017 specifies the principles for ultrasonic thickness measurement of metallic and non-metallic materials by direct contact, based on measurement of time of flight of ultrasonic pulses only.

 

This part of ISO 19232 specifies the minimum image quality values to ensure a uniform radiographic quality. It applies to the two types of image quality indicator as detailed in ISO 19232-1 for wire-type IQIs and ISO 19232-2 for step/hole-type IQIs and for the two testing classes A and B as described in ISO 5579. Values are specified for these two testing classes of radiographic techniques as specified in ISO 5579.

 

This document specifies personnel qualification criteria for the theoretical and practical assessment of designers covering multiple metal Additive Manufacturing (AM) processes. The activities and procedures foreseen to be performed by the designer are also part of the standard. This document is intended to provide guidance for qualification designers in general industrial applications.

 

This document contains requirements for dosing systems for chlorine dioxide generation according to the chlorite-chlorine gas process, the chlorite-acid process and the chlorite-sodium peroxodisulphate process, which are used for the disinfection and oxidation of substances in water. The chlorine dioxide (ClO2) solution is produced on site (in situ) by automated mixing of chemical precursors. This document applies to the treatment of water for human consumption, rinsing water for filters for swimming and bathing pools as well as for other uses (e.g. cooling water, process water, etc.

 

This document specifies the technical delivery requirements for bright steel products in the drawn, peeled/turned or additional ground condition and they are intended for mechanical purposes, for example for machine parts.

 

This document provides detailed and rigorous procedures for the impartial/independent performance testing for all forms of in-water cleaning (IWC) (i.e. both proactive and reactive systems, and with or without capture, processing, and disposal of debris), of all types of biofouling (i.e. biofilms/microfouling and macrofouling), and on all external submerged surfaces (i.e. hull and niche areas). This document aims to provide standardized, science-based test procedures that produce the data (and level of confidence) needed by permitting, approval, or regulatory authorities when assessing applications for IWC systems. This document is based on recent, related international efforts to develop IWC system testing protocols (e.g. [50][57][58]) and describe how to produce data and reporting (see ISO 17025) on the efficacy and safety of IWC systems for cleaning of various ship surfaces and for the capture and disposal of cleaning debris, when applicable. The impartial data and reporting from testing under this document should readily inform IWC service providers, ship operators, and jurisdictional agencies on the performance of IWC. The following procedures and methods could also serve as a resource for technology developers, environmental regulators, and other stakeholders interested in the safe and effective use of IWC systems.

 

This document specifies basic requirements for hydraulic part-turn valve actuators, both double acting and single acting, used for on-off and modulating control duties. It includes guidelines, recommendations and methods for enclosure and corrosion protection, control and testing. It does not apply to hydraulic actuators which are integral parts of control valves and to hydraulic actuators designed for permanent immersion in fresh or sea water as well as electro-hydraulic actuators. Other requirements, or conditions of use, different from those indicated in this document can vary upon request.

 

This document specifies requirements for storm water management systems on wastewater treatment plants. It does not refer to storm water management systems in wastewater collection and conveyance networks (sewer systems). This document specifies requirements for separation, storage, treatment, discharge and return of storm water within wastewater treatment plants. NOTE A storm water management system at the wastewater treatment plant is only required where such a system is not provided within the sewer system, limiting the flow to the wastewater treatment plants, see EN 752 and EN 16933 (all parts).

 

This document applies to flushing valves for WCs and valves for urinals, with automatic hydraulic closure, intended for: - WC pans EN 997; - single flush urinals EN 13407; - siphon acting urinals EN 13407. It does not apply to no-contact detection valves. It is intended to specify: - marking and identification, physico-chemical, dimensional, leaktightness, pressure behaviour, hydraulic, mechanical endurance and acoustic characteristics of flushing valves for WCs and urinals with automatic closure; - test methods used to verify these characteristics; - and to determine requirements for the atmospheric interrupter which shall be an integral part of the WC flushing valve. It applies in the following pressure and temperature conditions: Table 1 — Conditions of use for tapware Dynamic Pressure range recommended for a good working Urinals WC DN 15 WC DN 20 0,1 MPa = P = 0,5 MPa (1 bar = P = 5 bar) WC DN 25 0,08 MPa = P = 0,25 MPa (0,8 bar = P = 2,5 bar) WC DN 32 0,08 MPa = P = 0,25 MPa (0,8 bar = P = 2,5 bar) Maximum static pressure 1 MPa (10 bar) Water temperature = 25 °C NOTE 1 Although this document limits the pressure for WC DN 25 and WC DN 32 valves till 0,25 MPa (2,5 bar), some European countries have legislation and recommendations for higher pressures. Health and quality requirements in accordance to European and national legislation for final materials in contact with water intended for human consumption are not covered by this document.

 

This document specifies design and performance criteria arising out of the combination of a reciprocating internal combustion (RIC) engine and an alternating current (AC) generator when operating as a unit. This unit can run in parallel to the grid or not. This document applies to AC generating sets driven by RIC engines for land and marine use, excluding generating sets used on aircraft, or to propel land vehicles and locomotives. For some specific applications (e.g. essential hospital supplies and high-rise buildings), supplementary requirements can apply. The provisions of this document are a basis for establishing any supplementary requirements. For generating sets driven by other reciprocating-type prime movers (e.g. steam engines), the provisions of this document can be used as a basis for establishing these requirements.

 

This document covers arc stud welding of metallic materials subject to static and fatigue loading. It specifies requirements that are particular to stud welding, in relation to welding knowledge, quality requirements, welding procedure specification, welding procedure qualification, qualification testing of operators and testing of production welds. This document is appropriate where it is necessary to demonstrate the capability of a manufacturer to produce welded construction of a specified quality. This document has been prepared in a comprehensive manner, with a view to it being used as a reference in contracts. The requirements contained within it can be adopted in full, or partially, if certain requirements are not relevant to a particular construction (see Annex A). For the working range of stud welding, see Annex B.

 

This document specifies requirements for calibration, verification and validation of equipment used for where the resulting output cannot be readily or economically documented by subsequent monitoring, inspection and testing. This involves process variables influencing the fitness-for-purpose and in particular the safety of the fabricated product. Some guidance is, in addition, given in Annex B as regards requirements for calibration; verification and validation as part of acceptance testing of equipment used for welding or allied processes. Requirements to calibrate, verify and validate as part of inspection, testing, non-destructive testing or measuring of final welded products performed in order to verify confirm product compliance are outside the scope of the present document. The subject of this document is limited to calibration, verification and validation of equipment after installation, as part of the workshops’ and site operations for maintenance and/or operation. It needs to be stressed that this document has nothing to do with manufacture and installation of equipment for welding. Requirements for new equipment are formulated in directives and product codes (standards), as necessary. Annex C provides information when other parties are involved in calibration, verification and validation activities.

 

ISO 17662:2016 specifies requirements for calibration, verification and validation of equipment used for - control of process variables during fabrication, and - control of the properties of equipment used for welding or welding allied processes where the resulting output cannot be readily or economically documented by subsequent monitoring, inspection and testing. This involves process variables influencing the fitness-for-purpose and in particular the safety of the fabricated product. NOTE 1 This International Standard is based on the lists of process variables stated in International Standards for specification of welding procedures, in particular, but not exclusively in the ISO 15609- series. Future revisions of these International Standards can result in addition or deletion of parameters considered necessary to specify. Some guidance is, in addition, given in Annex B as regards requirements for calibration; verification and validation as part of acceptance testing of equipment used for welding or allied processes. Requirements to calibrate, verify and validate as part of inspection, testing, non-destructive testing or measuring of final welded products performed in order to verify confirm product compliance are outside the scope of the present International Standard. The subject of this International Standard is limited to calibration, verification and validation of equipment after installation, as part of the workshops' and site operations for maintenance and/or operation. It needs to be stressed that this International Standard has nothing to do with manufacture and installation of equipment for welding. Requirements for new equipment are formulated in directives and product codes (standards), as necessary. Annex C provides information when other parties are involved in calibration, verification and validation activities.

 

ISO 14555:2017 covers arc stud welding of metallic materials subject to static and fatigue loading. It specifies requirements that are particular to stud welding, in relation to welding knowledge, quality requirements, welding procedure specification, welding procedure qualification, qualification testing of operators and testing of production welds. ISO 14555:2017 is appropriate where it is necessary to demonstrate the capability of a manufacturer to produce welded construction of a specified quality. NOTE General quality requirements for fusion welding of metallic materials are given in ISO 3834-1, ISO 3834-2, ISO 3834-3, ISO 3834-4 and ISO 3834-5. ISO 14555:2017 has been prepared in a comprehensive manner, with a view to it being used as a reference in contracts. The requirements contained within it can be adopted in full, or partially, if certain requirements are not relevant to a particular construction (see Annex B). For processing of stud welding, see Annex A.