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IEC 61820-3-4:2023 specifies protective provisions for the operation of lamp systems powered by series circuits in aeronautical ground lighting. The protective provisions described here refer only to secondary supply systems for loads that are electrically separated from the series circuit. This document specifies the level of SELV, and alternatively PELV, under consideration of additional…

This document specifies requirements for information classification, marking and handling (ICMH). This document also defines how such information can be accessed by users, both inside and outside the organization, who own the information. This document is applicable to, but not limited to, the following: a)    organizations of any size that create, store, share or otherwise process information; b…

This document specifies general requirements for the competence and impartiality of proficiency testing (PT) providers and consistent operation of all proficiency testing schemes. This document can be used as a basis for specific technical requirements for particular fields of application. Users of proficiency testing schemes, regulatory authorities, organizations and schemes using peer-…

This document specifies general requirements for the competence and impartiality of proficiency testing (PT) providers and consistent operation of all proficiency testing schemes. This document can be used as a basis for specific technical requirements for particular fields of application. Users of proficiency testing schemes, regulatory authorities, organizations and schemes using peer-…

This standard applies to both public and private sanitary sewer systems. NOTES — 1 Private sanitary sewer laterals are installed on private properties in order to collect sewage from the sanitary sewer pipe of residential (single-family dwellings, multi-unit dwellings), commercial, institutional and industrial buildings, and any other types of property where the sanitary sewer system is not…

1 Scope 1.1 Introduction This Standard describes the test procedures, test set-ups, and calculations required to determine the performance, capacities, energy consumption, and overall efficiency of gas-fired and oil-fired combined radiant space and water heating systems (combos) with hydronic heat distribution. 1.2 Type of standard This Standard establishes laboratory methods for testing and…

1 Scope 1.1 General This Standard applies to free-standing, selective-type storage racks where the principal structural components are upright frames and load support beams. These storage racks include selective racks, double-deep racks, very narrow aisle (VNA) racks, push-back racks, pallet-flow racks, pallet shuttle racks, and automated storage and retrieval system (AS/RS) racks. Note:…

1 Scope 1.1 General 1.1.1 Application This Standard applies to hyperbaric chambers that have as their primary function the subjection of humans to pressure environments exceeding 1 atmosphere absolute, such as those required in a) diving operations; b) work under compressed-air conditions; c) medical treatment; d) training; and e) research. 1.1.2 Minimum requirements This Standard…

1 Scope 1.1 General This Standard assesses the performance of package wastewater treatment plants that are intended to treat either mixed-wastewater or greywater drainage and produce a treated effluent water quality suitable for non-potable water reuse applications with a treatment capacity of up to 10 000 L/d (2650 gal/d) or less. This Standard also covers site-assembled components included…

1 Scope 1.1 Inclusions This Standard sets forth a set of minimum performance requirements for portable engine fuelling systems (PEFS) with a rated capacity of not more than 32 L (8.45 US gal), designed to be connected to gasoline-fueled engines aboard boats by flexible fuel lines that can be disconnected for refilling and portability. It applies to PEFS intended to be used with gasoline…