Metallurgi

Kommittébeteckning: SIS/TK 289 (Gassystem)
Källa: ISO
Svarsdatum: den 17 aug 2018
Se merSe mindre
 

This document specifies requirements and gives recommendations on the management of geohazard risks of pipeline during the design, construction and operational periods.

This document shall apply to all operators and pipeline systems (existing and proposed/under construction), unless the operator can clearly demonstrate why the document should not apply.

This document applies to onshore gathering and transmission pipelines used in the petroleum and natural gas industries1).

This document is applicable to all reasonable and credible natural hazards and hazards induced by human activity that manifest similarly to natural hazards, collectively referred to as "Geological Hazards" or "Geohazards". Geohazards covered by this document include, but are not limited to (not given in order of significance):

— mass wasting processes, including landslides, rockfalls, debris flows, avalanches, and similar processes whether naturally occurring or anthropogenic;

— land subsidence and/or sinkhole formation, whether naturally occurring such as from dissolution of salt or carbonate rock formations (karst formation) or human caused, such as from underground mining or withdrawal of subsurface fluids such as groundwater and oil and gas;

— seismic hazards, such as ground shaking, fault rupture, liquefaction, flow failures and lateral spreading or associated secondary effects, such as seismically triggered landslides;

— volcanic hazards, such as lahars, pyroclastic flows, lava flows, dam break, and volcanically induced seismicity (excluding ashfall), where such hazards can be reasonably predicted;

— hydrologic processes, such as flooding, vertical scour of river bottoms, channel migration and bank erosion, channel avulsion, rapid lake drainage;

— permafrost/periglacial processes and geothermal effects, such as frost heave or thaw settlement;

— surface and backfill erosion;

— expansion or collapsing process caused by expansive and collapsible soils, such as glaciomarine clays, collapsible loess, etc.

This document does not cover atmospheric effects such as:

— high winds induced from hurricanes and tornadoes and similar storms, except where such events are reasonably predictable and will induce geohazards such as landslides, erosion, etc.,

— lightning,

— forest or brush fires,

1) Piping and pipelines within well-defined plants and facilities, such as pump or compressor stations, processing facilities or refineries are not covered by this document. It is assumed that the facility site as a whole will be subject to a separate geohazard assessment to evaluate applicable natural and man-made hazards. Nevertheless, this document may provide useful guidance for assessing the geohazard threat to facilities, including the pipelines within the facility.

— ashfall from volcanic eruptions,

Furthermore, this document does not cover so-called cascading events, where one remote event leads to a chain of events that eventually induces a geohazard near the pipeline. Only geohazards that directly affect the pipeline or RoW are covered.

Kommittébeteckning: SIS/TK 122 (Kemiska analysmetoder för metaller)
Källa: CEN
Svarsdatum: den 20 aug 2018
Se merSe mindre
 

This document specifies a flame atomic absorption spectrometric method (FAAS) for the determination of calcium content in non-alloy and low alloy steels.

The method is applicable to calcium contents between 0,000 4 % and 0,012 %.

The method can be adapted to higher calcium contents by changing the test portion or the dilution process, provided the criteria in 6.2.2 and 6.2.3 are still met.

Kommittébeteckning: SIS/TK 122 (Kemiska analysmetoder för metaller)
Källa: CEN
Svarsdatum: den 20 aug 2018
Se merSe mindre
 

This document specifies a flame atomic absorption spectrometric method (FAAS) for the determination of lead content in non-alloy and low alloy steels.

The method is applicable to lead contents between 0,005 % and 0,5 %.

The method can be adapted to lower or higher lead contents by changing the test portion or the dilution process, provided the criteria in 6.2.2 and 6.2.3 are still met.

Kommittébeteckning: SIS/TK 142 (Konstruktionsstål)
Källa: CEN
Svarsdatum: den 28 aug 2018
Se merSe mindre
 

This document specifies the technical delivery conditions for flat and long products as well as semi-finished products which are meant for further processing to flat and long products of hot rolled non-alloy quality steels in the grades and qualities given in Tables 1 to 5 (chemical composition) and Tables 6 to 8 (mechanical properties) in the usual delivery conditions as given in 6.3. Three engineering steels are also specified in this document (see Tables 2 and 4) (chemical composition) and Table 7 (mechanical properties). This document does not apply to structural hollow sections (see EN 10210-1 and EN 10219-1) and tubes.

The technical delivery conditions apply to:

— thicknesses ≥ 3 mm and ≤ 150 mm for long products of steel grade S460JR, J0, J2, K2 and S500J0;

— thicknesses ≤ 400 mm for flat products of qualities JR, J0, J2 and K2;

— thicknesses ≤ 250 mm for flat and long products of all other grades and qualities.

The steels specified in this document are not intended to be heat treated except products delivered in the delivery condition +N. Stress relieving is permitted. Products delivered in +N condition can be hot formed and/or normalized after delivery (see Clause 3).

Semi-finished products which are to be converted to rolled finished products conforming to this document should be the subject of special agreement at the time of the order. The chemical composition can also be agreed at the time of the order, however the values should be within the limits of Tables 1 and 2.

For certain grades and product forms suitability for particular applications may be specified at the time of the order (see 7.4.2, 7.4.3 and Table 9).

Kommittébeteckning: SIS/TK 142 (Konstruktionsstål)
Källa: CEN
Svarsdatum: den 28 aug 2018
Se merSe mindre
 

Part 3 of this document, in addition to Part 1, specifies technical delivery conditions for flat and long products of hot rolled weldable fine grain structural steels in the normalized/normalized rolled delivery condition in the grades and qualities given in Tables 1 to 3 (chemical composition) and Tables 4 to 6 (mechanical properties) in thickness ≤ 250 mm.

In addition to prEN 10025-1:2014 the steels specified in this document are especially intended for use in heavily loaded parts of welded structures such as, bridges, flood gates, storages tanks, water supply tanks, etc., for service at ambient and low temperatures.

Kommittébeteckning: SIS/TK 142 (Konstruktionsstål)
Källa: CEN
Svarsdatum: den 28 aug 2018
Se merSe mindre
 

Part 4 of this document, in addition to Part 1, specifies technical delivery conditions for flat and long products of hot rolled weldable fine grain structural steels in the thermomechanical rolled condition in the grades and qualities given in Tables 1 to 3 (chemical composition) and Tables 4 to 6 (mechanical properties) in thickness ≤ 120 mm for flat products and in thickness ≤ 150 mm for long products.

In addition to prEN 10025-1:2014 the steels specified in this document are especially intended for use in heavily loaded parts of welded structures such as, bridges, flood gates, storage tanks, water supply tanks, etc., for service at ambient and low temperatures.

Kommittébeteckning: SIS/TK 142 (Konstruktionsstål)
Källa: CEN
Svarsdatum: den 28 aug 2018
Se merSe mindre
 

Part 5 of this document, in addition to part 1, specifies technical delivery conditions for flat and long products of hot rolled steels with improved atmospheric corrosion resistance in the grades and qualities given in Tables 2 and 3 (chemical composition) and Tables 4 and 5 (mechanical properties) in the usual delivery conditions as given in 6.3.

The thicknesses in which products of the steel grades and qualities specified in this document may be supplied are given in Table 1.

In addition to prEN 10025-1:2014 the steels specified in this document are especially intended for use in welded, bolted and riveted components which shall have enhanced resistance to atmospheric corrosion, for service at ambient temperatures (subject to the restrictions described in 7.4.1).

The steels specified in this Part 5 are not intended to be heat treated except products delivered in the delivery condition +N. Stress relief annealing is permitted (see 7.3.1.1, NOTE). Products delivered in +N condition can be hot formed and/or normalized after delivery (see Clause 3).

Kommittébeteckning: SIS/TK 142 (Konstruktionsstål)
Källa: CEN
Svarsdatum: den 28 aug 2018
Se merSe mindre
 

Part 6 of this document, in addition to part 1, specifies technical delivery conditions for flat products of high yield strength alloy special steels. The grades and qualities are given in Tables 1 to 3 (chemical composition) and Tables 4 to 6 (mechanical properties) and are supplied in the quenched and tempered condition as given in 6.3.

The steels specified in this document are applicable to hot-rolled flat products with a minimum nominal thickness of 3 mm and a maximum nominal thickness of 150 mm for grades S460, S500, S550, S620 and S690, a maximum nominal thickness of 100 mm for grades S890 and S960, in steels which, after quenching and tempering, have a specified minimum yield strength of 460 MPa1) to 960 MPa1).

Kommittébeteckning: SIS/TK 121 (Bestämning av mikrostruktur i stål)
Källa: SIS
Svarsdatum: den 2 sep 2018
Se merSe mindre
 

This standard describes a method for assessment and reporting of quantity, size, morphology and distribution of non-metallic inclusions in plastic wrought steel, metals and alloys with the help of a Light Optical Microscope (LOM) and a comparative chart. The pictures in the chart are based on the logarithmic Gauss-(Galton) distribution with respect to the inclusion size.

The method described in this standard is primarily intended for inclusions in plastic wrought metallic materials but can also be used for cast and sintered steels.

NOTE The chemical composition of the inclusions does not form the basis of categorisation.

Kommittébeteckning: SIS/TK 106 (Hydraulik och pneumatik)
Källa: ISO
Svarsdatum: den 29 sep 2018
Se merSe mindre
 

This document specifies sizes and nominal working pressures for tubes with outside diameters in accordance with ISO 4397, and wall thicknesses and mechanical properties in accordance with ISO 3304 (seamless precision steel tubes} and ISO 3305 (welded precision steel tubes). The nominal working pressures included in this standard reflect a design factor ratio of 4 to 1 applied to the calculated burst pressures.

Kommittébeteckning: SIS/TK 145 (Armering)
Källa: ISO
Svarsdatum: den 2 okt 2018
Se merSe mindre
 

This part of ISO 6935 specifies technical requirements for ribbed bars to be used as reinforcement in concrete.

This part of ISO 6935 is applicable to steel delivered in the form of bars, coils and de-coiled products. It includes both weldable and non-weldable steels.

The production process is at the discretion of the manufacturer.

This part of ISO6935 is not applicable to ribbed bars produced from finished products, such as plates and railway rails.

Ämnesområden: Verktygsstål
Kommittébeteckning: SIS/TK 135 (Rostfria stål)
Källa: ISO
Svarsdatum: den 17 okt 2018
Se merSe mindre
 

This International standard sets out an order for listing elements determined in steels and most other iron-based alloys, excluding foundry irons, where the priorities are different.

NOTE This document is a standard of ISO/TC 17/SC 4, but can also be used by other TC 17 subcommittees.