Rechercher

This document defines a number of object classes and name forms which may be found useful across a range of applications of the Directory. The definition of an object class involves listing a number of attribute types which are relevant to objects of that class. The definition of a name form involves naming the object class to which it applies and listing the attributes to be used in forming…

1 Scope 1.1 This Standard specifies requirements for measuring the heat recovery efficiency and pressure loss for drain water heat recovery (DWHR) units. 1.2 This Standard applies to DWHR units a) of any size; and b) with a configuration where potable water and drain water flow rate is equal; 1.3 In this Standard, “shall” is used to express a requirement, i.e., a provision that the user…

1 Scope 1.1 This Standard specifies requirements for the durability and safety of drain water heat recovery (DWHR) units. 1.2 This Standard applies to DWHR units of any diameter and length and configuration for use with potable water, and to their components and materials supplied by the manufacturer, their assembly and installation instructions, and their operation after assembly in…

1 Scope 1.1 This Standard covers mechanical couplings that are used to axially join pipes and fittings in non-pressure drain, waste, and vent (DWV) piping systems and sewer piping systems located inside or outside buildings and above ground or underground. Notes: 1) Caution should be exercised when installing mechanical couplings at low temperatures. The coupling manufacturer should be…

1 Scope 1.1 This Standard provides requirements for grade-level, in-ground enclosures. The enclosures are made of polymer concrete, composite, or plastic (enclosure covers may be made of metal), intended for conductors and connections at voltages 750 V or less. 1.2 These enclosures are not intended to be installed where vehicular traffic normally occurs. 1.3 These enclosures are intended to…

1 Scope 1.1 This National Standard of Canada applies to the following organic products: a) Unprocessed plants and plant products, livestock and livestock products, to the extent that the principles of production and specific verification rules for them are described in the standard; b) Processed agricultural crop and livestock products intended for human consumption or use and derived from…

1 Scope 1.1 Types of valves in the scope of this Standard The requirements of this Standard apply to automatic valves used in compressed natural gas dispensing systems as specified in Table 1. 1.2 Terminology In this Standard, “shall” is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; “should” is used to express a…

This document specifies a four-pole connector system for implantable cardiac rhythm management (CRM) devices which have pacing, electrogram sensing and/or defibrillation functions. This document includes requirements for the connector portion of an implantable lead as well as for the mating connector cavity attached to an implantable pulse generator. Essential dimensions and performance…

This document specifies a small-scale laboratory screening procedure for comparing the relative burning characteristics of horizontally oriented, small cellular plastic specimens having a density less than 250 kg⋅m−3 determined in accordance with ISO 845, when exposed to a small-flame ignition source. NOTE Another International Standard which covers flexible cellular plastic and cellular…

IEC 60172:2020 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 60172:2020 specifies, in accordance with the provisions of IEC 60216-1, a method for evaluating the temperature…