Seal-less rotodynamic pumps — Class II — Specification
1.1 This International Standard specifies the requirements for seal-less rotodynamic pumps that are driven with
permanent magnet coupling (magnet drive pumps) or with canned motor, and which are mainly used in chemical
processes, water treatment and petrochemical industries. Their use can be dictated by space, noise, environment
or safety regulations.
Seal-less pumps are pumps where an inner…
Reaction to fire tests for building products — Determination of the heat of combustion
This International Standard specifies a method for the determination of the heat of combustion of building products at constant volume in a bomb calorimeter.
This International Standard describes a test method for the measurement of the gross heat of combustion (PCS). Annex A describes the calculation of the net heat of combustion ( PCI) when required.
Information on the precision of the test…
Geometrical Product Specifications (GPS) — Indication of surface texture in technical product docume...
This International Standard specifies the rules for the indication of surface texture in technical product documentation (e.g. drawings, specifications, contracts, reports) by means of graphical symbols and textual indications.
It is applicable to the indication of requirements for surfaces by means of profile parameters, according to ISO 4287, related to the R-profile (roughness parameters), W-…
Calculation of load capacity of spur and helical gears — Application for industrial gears
The formulae specified in this International Standard are intended to establish a uniformly acceptable method for
calculating the pitting resistance and bending strength capacity of industrial gears with spur or helical teeth.
The rating formulae in this International Standard are not applicable to other types of gear tooth deterioration such
as plastic yielding, micropitting, scuffing, case…
Standard data element types with associated classification scheme for electric components - Part 1: ...
Provides a firm basis for the clear and unambiguous definition of
characteristic properties (data element types) of all elements of electrotechnical systems from basic components to subassemblies and full systems. Although originally conceived in the context of providing a basis for the exchange of information on electric/electronic components, the principles and methods of this standard may be…
Information technology - Security techniques - Specification of TTP services to support the applicat...
This Recommendation | International Standard will define those TTP services needed to support the application of digital
signatures for the purpose of non-repudiation of creation of documents.
This Recommendation | International Standard will also define interfaces and protocols to enable interoperability
between entities associated with these TTP services.
Definitions of technical services and…
Ophthalmic optics — Specifications for single-vision ready-to-wear near- vision spectacles
This International Standard specifies the minimum requirements for complete single-vision ready-to-wear near-vision spectacles. These spectacles are not intended for regular use without the approval of an eyecare professional.
Information technology — Security techniques — Specification of TTP services to support the applicat...
This Recommendation | International Standard will define those TTP services needed to support the application of digital
signatures for the purpose of non-repudiation of creation of documents.
This Recommendation | International Standard will also define interfaces and protocols to enable interoperability
between entities associated with these TTP services.
Definitions of technical services and…
Mineral insulated cables and their terminations with a rated voltage not exceeding 750 V - Part 1: C...
Applies to mineral insulated general wiring cables with copper or copper alloy sheath and copper conductors and with rated voltages of 500 V and 750 V. Provision is made for a corrosion-resistant extruded outer covering over the copper sheath, when required. This outer covering is not specified for the purpose of electrical insulation of the metal sheath. Requirements for terminations for use…
