Optical fibres - Part 1-34: Measurement methods and test procedures - Fibre curl
IEC 60793-1-34:2021 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 60793-1-34:2021 establishes uniform requirements for the mechanical characteristic: fibre curl or latent…
Terrestrial photovoltaic (PV) modules - Design qualification and type approval - Part 1-2: Special r...
IEC 61215-1-2:2021 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 61215-1-2:2021 lays down requirements for the design qualification of terrestrial photovoltaic modules suitable…
Field Device Integration (FDI) - Part 5: Information Model
IEC 62769-5:2021 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 62769-5:2021 defines the FDI Information Model. One of the main tasks of the Information Model is to reflect the…
Nuclear power plants - Instrumentation and control important to safety - Hardware requirements
IEC 60987:2021 provides requirements and recommendations for the hardware aspects of I&C systems whatever the technology and applies for all safety classes in a graded manner (as defined by IEC 61513). The requirements defined within this document guide, in particular, the selection of pre-existing components, hardware aspects of system detailed design and implementation and equipment…
Instrument transformers - Part 13: Stand-alone merging unit (SAMU)
IEC 61869-13:2021 is a product standard and covers only additional requirements for stand-alone merging units (SAMUs) used for AC applications having rated frequencies from 15 Hz to 100 Hz. The digital output format specification is not covered by this document; it is standardized in IEC 61869-9 as an application of IEC 61850, which specifies the power utility communication architecture.
This…
Lever operated non-lubricated plug type gas shut-off valves
1 Scope
1.1
This Standard applies to manual lever operated, gas shut-off valves sizes NPS 1/4 to 8 of metallic
construction with weld and flanged and threaded ends other than pressure lubricated designs for use
with natural gas, manufactured gas, and liquefied petroleum gases.
Notes:
1) Valves covered by this Standard may be used on “digester gas” (methane produced during sewage treatment…
Moderating the effects of permafrost degradation on existing building foundations
1 Scope
1.1 Mitigation strategies and other actions
This Standard covers the following strategies to maintain permafrost or mitigate permafrost degradation related to existing buildings or structures:
a)
site techniques that consist of
i)
site grading and drainage;
ii)
snow management; and
iii)
shading or albedo change.
b)
foundation techniques that consist of
i)
ventilation;
ii)…
Emergency Breakaway Fittings, Swivel Connectors and Pipe-Connection Fittings for Petroleum Products ...
1 Scope
1.1 This Standard sets forth minimum requirements for emergency breakaway fittings, swivel connectors
and pipe-connecting fittings of the threadless compression type. Connectors and fittings covered by these
requirements are intended only for the following services.
1.2 A swivel connector is either a hose swivel or swivel joint. The swivel connector will allow radial
movement and is…
Raccords à rupture d’urgence, les raccords pivotants et les raccords de tuyau pour les produits pétr...
1 Domaine d’application
1.1 Cette norme établit les exigences minimales pour les raccords à rupture d’urgence, les raccords
pivotants et les raccords de tuyau du type à compression sans filetage. Les raccords couverts par les
présentes exigences sont destinés uniquement aux services suivants.
1.2 Un raccord pivotant est un raccord tournant ou un joint à rotule. Le connecteur raccord pivotant…
Privacy protection - Privacy guidelines for smart cities
The document takes a multiple agency as well as a citizen-centric viewpoint.
It provides guidance on:
— smart city ecosystem privacy protection;
— how standards can be used at a global level and at an organizational level for the benefit of citizens; and
— processes for smart city ecosystem privacy protection.
This document is applicable to all types and sizes of organizations,…