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,…
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,…
Safety of machinery — Relationship with ISO 12100 — Part 1: How ISO 12100 relates to type-B and type...
This document provides assistance to the designer/manufacturer of machinery and related components as to how the system of existing type-A, type-B and type-C machinery safety standards should be applied in order to design a machine to achieve a level of tolerable risk by adequate risk reduction.
This document explains the general principles of ISO 12100 and how this type-A standard is used for…
Special Purpose Nonmetallic Containers and Tanks for Specific Combustible or Noncombustible Liquids
1.1 These minimum requirements cover special purpose nonmetallic containers and tanks (vessels) for
specific aboveground use applications for combustible or non-combustible liquids as indicated for each
special purpose type. The requirements address the specific designs, features, limitations, use factors and
other unique characteristics of each type. The types of different special purpose…
