Rechercher

1 Scope 1.1 This Standard applies to newly produced gas-fired low-pressure steam and hot water boilers with gas inlet pressure ratings not exceeding 0.5 psi (3.5 kPa) and having input ratings of less than 12 500 000 Btu/h (3 663 389 W) (see Clause 3), hereinafter referred to as boilers,* constructed entirely of new unused parts and materials, a) for operation at or below the following…

1 Scope 1.1 General This Standard applies to self-acting spring-operated devices that automatically reduce the initial pressure in water systems to a set lower pressure. It applies to devices that are of the direct-acting diaphragm type with a means for adjusting the pressure setting. Valves can be with or without an integral bypass relief valve or strainer. 1.2 Sizes This Standard applies to…

1 Scope 1.1 These requirements apply to low-voltage AC power circuit breakers as follows: a) Stationary-mounted or drawout-mounted types, b) 2-pole, 3-pole, and 4-pole constructions, c) Manually operated or power operated, and d) With or without electromechanical or solid-state type trip device. 1.2 These requirements apply to drawout-mounted type low-voltage AC integrally fused power…

1 Scope This part of IEC 60079 contains the specific requirements for design, construction and assessment of intrinsically safe systems, Type of Protection “i”, intended for use, as a whole or in part, in locations in which the use of Group I, II or III Ex Equipment is required. NOTE 1 This standard is intended for use by the designer of the system e.g. a person who could be a manufacturer,…

1 Scope 1.1 General This Standard specifies safety requirements for pipelines for medical gases, medical vacuum, medical support gases, and anaesthetic gas scavenging systems in health care facilities, both public and private. It applies to all facilities providing health care services, regardless of type, size, location, or range of services, including, but not limited to a) acute care…

1 Scope This document specifies safety, construction, performance and testing requirements for controls for gas burners and gas burning appliances for use with natural gas, manufactured gas or liquefied petroleum gas (LPG). This document applies to controls for use at maximum operating pressures up to and including 500 kPa. This document provides the general requirements that are intended to be…

IEC 63145-21-20:2022(E) specifies the standard measurement conditions and measurement methods for determining the screen door effect (SDE), which is one of the image quality aspects of eyewear displays of virtual reality (VR) type.

1.1 Products that comply with the requirements of this Standard are intended for use as thermal insulation in building construction. This Standard covers requirements and test methods for closed cell polyurethane and polyisocyanurate foam thermal insulation in the form of flat rigid boards covered on both sides with a facing material which impart some physical characteristics. 1.2 This closed…

1.1 Les produits conformes aux exigences de la présente norme sont conçus pour servir d’isolants thermiques dans la construction de bâtiments. Cette norme porte sur les exigences et les méthodes d’essai pour l’isolation thermique en mousse polyuréthane et en mousse de polyisocyanurate à alvéoles fermés sous forme de panneaux plats rigides dont les deux faces sont couvertes d’un matériau de…

This document establishes terminology for AI and describes concepts in the field of AI. This document can be used in the development of other standards and in support of communications among diverse, interested parties or stakeholders. This document is applicable to all types of organizations (e.g. commercial enterprises, government agencies, not-for-profit organizations).