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IEC 62990-2:2021 gives guidance on the selection, installation, use and maintenance of electrical equipment used for the measurement of toxic gases and vapours in workplace atmospheres. The primary purpose of such equipment is to ensure safety of personnel and property by providing an indication of the concentration of a toxic gas or vapour and warning of its presence. This document is…

1 Scope This document sets the general and dimensional interchangeability requirements for plugs, socket-outlets, connectors and appliance inlets with arcuate contacts of standardized configurations (hereinafter referred to as accessories), with a rated operating voltage not exceeding 600 V AC at a frequency of 50 Hz and 60 Hz and with rated currents of 20 A and 30 A, primarily intended for…

1 Scope 1.1 Inclusions This Standard is intended for industrial slurry pumping systems with the following characteristics: a) electrically driven single and multi-stage slurry pumps; b) flowrate greater than 10 L/s; c) average particle size (d50) between 50 µm and 8 mm; d) settling slurry; e) slurry behaving as a viscous Newtonian fluid (shear stress is linear and proportional to…

1 Scope 1.1 This Standard specifies the framework and calculation models for “essential energy benchmarking” of data centres as a new form of ideal-state benchmarking for energy performance. It provides the specifications necessary to benchmark the energy efficiency performance of a data centre by using a dimensionless indicator called the benchmark energy factor (BEF). This Standard is a…

1 Scope 1.1 Object This Standard provides a method for measuring fireplace, steady-state, and radiant efficiency. 1.2 Appliances included in scope This Standard applies to vented gas fireplaces meeting the requirements of ANSI Z21.50 • CSA 2.22 and to vented gas fireplace heaters meeting the requirements of CSA/ANSI Z21.88 • CSA 2.33 that use natural gas or propane. 1.3 Appliances excluded…

1 Scope 1.1 Inclusions — Compressor packages This Standard describes the general requirements for compressor packages used in compressed natural gas fuelling station service. 1.2 Inclusions — Compressor designs This Standard applies to compressor designs referenced in Clause 5. 1.3 Pressure references All references to pressure throughout this Standard are to be considered gauge pressures…

1 Scope 1.1 General This Standard specifies requirements for open profile polypropylene (PP) storm sewer pipe and fittings for leak-proof applications. Profile wall pipe includes only open profile with smooth interior and sizes based on controlled inside diameter. Open profile pipe is of an annular construction. Notes: 1) Pipe and fittings manufactured in accordance with this Standard…

1 Scope This document specifies mechanisms to establish shared symmetric keys between groups of entities. It defines: — symmetric key-based key establishment mechanisms for multiple entities with a key distribution centre (KDC); and — symmetric key establishment mechanisms based on a general tree-based logical key structure with both individual rekeying and batch rekeying. It also defines key…

1.1 General This Standard specifies requirements for the packaging, collection, handling, storage, and on-site treatment and disposal of health care waste materials. 1.2 Application 1.2.1 General This Standard applies to health care and veterinary-related waste, and health care-related waste generated from traditional health care settings, public settings, and personal service settings,…

This document defines the geometry of the interface of removable 24° cone couplings for fluid systems in aircraft. The connection with the pipe of each one of the connecting elements can be of different design. This document specifies the dimensions which allow the interchangeability of the male and female elements and of the nut used for the connection. The dimensions define the maximum volume…