Metalliteollisuuden Standardisointiyhdistys

 

This document describes the procedures to prepare plutonium sources and  to measure the activity ratio of 238Pu to (239Pu + 240Pu) by alpha spectrometry. The alpha spectrometry method is used for the determination of isotopic abundance of 238Pu in combination with isotope amount ratios determined by mass spectrometry and eliminates the possible isobaric interferences of 238U in the latter method. It is applied to the analysis of purified solutions of plutonium in 2 mol/l to 4 mol/l nitric acid containing 50 µg to 200 µg of plutonium per millilitre, as may result from the chemical treatment and purification preceding plutonium isotopic analysis by mass spectrometry. This document is applied to plutonium solutions free from 241Am and those containing less than 10 % of other non-volatile impurities relative to the plutonium content. Otherwise purification should be carried out in accordance with ISO 8299[1]. The methods provided in this document are intended for use in conjunction or in parallel with mass spectrometry for the isotopic analysis of plutonium in spent-fuel solutions or nuclear-grade plutonium products.

 

This document specifies the mechanical properties of wrought aluminium and wrought aluminium alloy sheet, strip and plate for general engineering applications. It does not apply to semi-finished rolled products in coiled form to be subjected to further rolling (reroll stock) or to special products such as corrugated, embossed, painted, sheets and strips or to special applications such as aerospace, can stock, finstock, for which mechanical properties are specified in separate European Standards. The chemical composition limits of the alloys are specified in EN 573 3. Temper designations are specified in EN 515.

 

This document specifies the definition and classification of steels. It defines the term "steel" (see clause 3) and it classifies the steel grades as main criteria by the chemical composition into non-alloy, low-alloy and high-alloy steels. Micro-alloy steels are a subclass of low alloy steels and stainless steels are a subclass of high-alloy steels.

 

This document provides guidance and requirements for risk assessment and implementation of prevention and protection measures relating to material extrusion-based additive manufacturing with polymer materials. The risks covered by this document concern all sub-processes composing the manufacturing process, including the management of waste. This document does not specify requirements for the design of machinery and equipment used for additive manufacturing.

 

This document describes methods for the measurement of the insertion loss of hearing protection devices at supra-threshold levels of impulsive noise using an acoustical test fixture (ATF). The ATF is an anthropometric fixture and contains two ear simulators for the purpose of testing hearing protection devices. The standard establishes uniform instrumentation, calibration, and electroacoustic requirements including details regarding the sound field of test facilities, and the acoustical characteristics of ATFs. The procedures described utilize signals at sound levels representative of applications in which hearing protection devices are worn, ranging from 130 dB to 170 dB peak sound pressure level (SPL). These procedures are intended to provide quick, economical, and repeatable objective (not psychophysical) measurement techniques that can be used as additions or complements to the real-ear attenuation at threshold (REAT) measurement method specified in ISO 4869-1. Methods for estimating attenuation values are provided, combining the measured insertion loss with real-ear attenuation measurements of the device with deliberate active or passive sound transmission mechanisms occluded or disabled, resulting in the impulsive level-dependent attenuation (ILDA). Other metrics are defined (the impulsive A-weighted level attenuation (ILAA) and impulsive peak-level attenuation (IPLA)); these are intended for use in estimating effective SPLs when hearing protectors are worn.

 

This document provides guidance and requirements for risk assessment and implementation of prevention and protection measures relating to material extrusion-based additive manufacturing with polymer materials. The risks covered by this document concern all sub-processes composing the manufacturing process, including the management of waste. This document does not specify requirements for the design of machinery and equipment used for additive manufacturing.

 

This part of ISO 27327 establishes uniform methods for laboratory testing of air curtain units to determine aerodynamic performance in terms of airflow rate, outlet air velocity uniformity, power consumption and air velocity projection, for rating or guarantee purposes. This part of ISO 27327 is not applicable to the specification of test procedures to be used for design, production or field testing.