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prEN ISO 21813 - Fine ceramics (advanced ceramics, advanced technical ceramics) - Methods for chemical analysis of high purity barium titanate powders (ISO/DIS 21813:2026)

Odbor: HZN/TU N1 (Nemetalni materijali 1)

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Rok za komentiranje: 2026-09-12

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ISO 21813 specifies methods for the chemical analysis of fine high purity barium titanate powders used as the raw material for fine ceramics.
ISO 21813 stipulates the determination methods of the barium, titanium, aluminium, cadmium, calcium, cobalt, dysprosium, iron, lead, magnesium, manganese, nickel, niobium, potassium, silicon, sodium, strontium, vanadium, zirconium, carbon, oxygen and nitrogen contents in high purity barium titanate powders. The barium and titanium contents, the major elements, are determined by using an acid decomposition-gravimetric method or an acid decomposition-inductively coupled plasma-optical emission spectrometry (ICP-OES) method. The aluminium, cadmium, calcium, chromium, cobalt, dysprosium, iron, lead, magnesium, manganese, nickel, niobium, potassium, silicon, strontium, vanadium and zirconium contents are simultaneously determined via an acid digestion-ICP-OES method. The nitrogen content is determined by using an inert gas fusion-thermal conductivity method, while that of oxygen is determined via an inert gas fusion-IR absorption spectrometry method. Finally, the carbon content is determined using a combustion-IR absorption spectrometry method or a combustion-conductometry method.

EN ISO 15195:2019/prA1 - Laboratory medicine - Requirements for the competence of calibration laboratories using reference measurement procedures - Amendment 1 (ISO 15195:2018/DAM 1:2026)

Odbor: HZN/TO 555 (Medicinski proizvodi)

Ustanova izvornika:

Rok za komentiranje: 2026-09-13

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prEN 3299 - Aerospace series - Shaft-nut and threaded ring, self-locking, right- or left-hand MJ threads, in heat resisting steel FE-PA2601 (A286), silver plated - Technical specification

Odbor: HZN/TU T1 (Prijevoz, rukovanje materijalima i pakiranje 1)

Ustanova izvornika:

Rok za komentiranje: 2026-09-15

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This document specifies the characteristics, qualification and acceptance requirements for self-locking shaft-nuts and threaded rings, with right- or left-hand MJ threads, in FE-PA2601, silver-plated, for aerospace applications.
Temperature class: 450 °C .
It is applicable whenever referenced.

prEN 3614 - Aerospace series - Bolt, normal hexagonal head, relieved shank, long thread, in heat resisting steel FE-PA2601 (A286), silver plated - Classification: 900 MPa / 650 °C

Odbor: HZN/TU T1 (Prijevoz, rukovanje materijalima i pakiranje 1)

Ustanova izvornika:

Rok za komentiranje: 2026-09-15

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This document specifies the characteristics of silver plated bolts, normal hexagonal head with relieved shank and long thread in heat resisting steel FE-PA2601 (A286), for aerospace applications.
Classification: 900 MPa /650 °C

prEN 3646-011 - Aerospace series - Connectors, electrical, circular, bayonet coupling, operating temperature 175 °C or 200 °C continuous - Part 011: Dummy receptacle - Product standard

Odbor: HZN/TU T1 (Prijevoz, rukovanje materijalima i pakiranje 1)

Ustanova izvornika:

Rok za komentiranje: 2026-09-15

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This document specifies the characteristics of dummy receptacles in the family of bayonet coupling circular connectors, intended for use in an operating temperature range of −65 °C to 175 °C or 200 °C continuous.
It applies to models specified in Table 3.
For plugs associated with these dummy receptacles, see EN 3646 008.

prEN 4072 - Aerospace series - Screw, 100° countersunk normal head, offset cruciform recess, close tolerance shank, short thread in titanium alloy, aluminium IVD coated - Classification: 1 100 MPa (at ambient temperature)/425 °C

Odbor: HZN/TU T1 (Prijevoz, rukovanje materijalima i pakiranje 1)

Ustanova izvornika:

Rok za komentiranje: 2026-09-15

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This document specifies the characteristics of screws, 100° countersunk normal head, offset cruciform recess, close tolerance shank, short thread, in titanium alloy, aluminium IVD coated.
Classification: 1 100 MPa /425 °C .

EN 1794-2:2024/prA1 - Road traffic noise reducing devices - Non-acoustic performance - Part 2: Methods of determination of the general safety and environmental characteristics

Odbor: HZN/TO 509 (Cestovna oprema)

Ustanova izvornika:

Rok za komentiranje: 2026-09-15

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This document specifies methods and criteria for assessing the general safety and environmental performance of road traffic noise reducing devices under typical roadside conditions. Appropriate test methods are provided where these are necessary. The treatment of each topic is covered separately in Annexes A to F.

prEN 14579 - Natural stone test methods - Determination of sound speed propagation

Odbor: HZN/TO 196 (Prirodni kamen)

Ustanova izvornika:

Rok za komentiranje: 2026-09-15

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This document specifies a method for the determination of the velocity of propagation of pulses of ultrasonic longitudinal waves in natural stone, both in laboratory and in situ.

EN 1991-1-6:2026/prA1 - Eurocode 1 - Actions on structures - Part 1-6: Actions during execution

Odbor: HZN/TO 548 (Konstrukcijski eurokodovi)

Ustanova izvornika:

Rok za komentiranje: 2026-09-15

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1.1 Scope of prEN 1991-1-6

(1) prEN 1991-1-6 provides guidance and general rules on the determination of actions relevant for the design of buildings and civil engineering works, including geotechnical structures, for their execution stage.

NOTE Actions for design during execution include those that only arise from execution activities and act during execution, termed construction actions (for example personnel and hand tools, auxiliary structures, equipment and elements used during execution), and others that are present during the service life of the completed structure (for example self-weight, wind, etc.) but which can act differently and/or have different values during execution.

(2) prEN 1991-1-6 provides guidance and general rules for the determination of actions for the design of auxiliary structures, elements and equipment used during execution in case they are designed to the Eurocodes and not to other European Standards.

NOTE Other European Standards (e.g. EN 12810, EN 12811, EN 12812) provide specific rules for certain types of auxiliary structures, equipment and elements used during execution.

(3) prEN 1991-1-6 gives rules for buildings and bridges during execution to supplement the provisions in EN 1990.

NOTE For combination rules for execution, see EN 1990.

1.2 Assumptions

(1) The general assumptions given in EN 1990 apply.

(2) The application of this document follows the limit state principle and is based on the partial factor method, unless explicitly prescribed differently.

(3) The verification of buildings and civil engineering structures in transient design situations is undertaken in accordance with the Eurocodes, accounting for the interaction with any auxiliary structures, elements and/or equipment.

(4) When using European product standards covering auxiliary structures, equipment and elements used during execution, it is assumed that the design basis, design requirements and, if provided, the safety and operational design limits specified in these product standards are taken into account.

(5) Adequate planning, documentation, communication, control and supervision are provided during execution, involving all relevant parties.

NOTE Execution of a structure can involve interaction between several parties from diverse engineering fields, responsible for the design, fabrication, transportation and execution of different subsystems used during the execution of a structure.

EN 1991-1-8:2026/prA1 - Eurocode 1 - Actions on structures - Part 1-8: Actions from waves and currents on coastal structures

Odbor: HZN/TO 548 (Konstrukcijski eurokodovi)

Ustanova izvornika:

Rok za komentiranje: 2026-09-15

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1.1 Scope of EN 1991 1 8

(1) EN 1991 1 8 gives principles and rules to determine the values of wave and current actions on structures and civil engineering works in the coastal zone, i.e. works connected to, or in close vicinity to the shore.

NOTE 1 Provisions in EN 1991 1 8 are limited to hydrodynamic actions that can be directly quantified in terms of wave and/or current induced pressures and associated forces and moments on structures or structural parts.

NOTE 2 As opposed to offshore conditions, waves or currents in the coastal zone are generally affected by the presence of the seabed or shore.

NOTE 3 The coastal zone is typically defined as the area between the shoreline and the deep-water limit.

(2) EN 1991 1 8 describes the principles for defining the hydrodynamic conditions to be used for design, including sea water levels.

(3) EN 1991 1 8 addresses specifically actions from currents and waves on the following structure types:

— cylindrical structures;

— subsea pipelines;

— suspended decks;

— vertical face structures;

— permanently moored floating structures.

NOTE 1 Additional guidance can be needed for:

— moored structures in the coastal zone for renewable energy production or related to oil and gas production or processing;

— moored structures spanning areas with variable wave and current states (e.g. floating aquaculture farms or floating bridges).

NOTE 2 For hydraulic pressures caused by quasi-static water levels, and ground water, see EN 1997 (all parts).

(4) Actions addressed in EN 1991 1 8 do not cover:

— hydraulic resonance in sheltered areas or basins (phenomena also known as harbour resonance);

— translation waves, e.g. tsunamis;

— waves and currents induced by maritime operations, i.e. vessel wake, berthing and mooring;

— hydrodynamic actions induced by earthquakes;

— ice-induced pressures and forces;

— coastal structures where flood risk and/or erosion or sediment management is the dominant function.

1.2 Assumptions

(1) The assumptions given in EN 1990 apply to this document.

(2) In addition, it is assumed that actions from waves and currents on coastal structures are determined by personnel appropriately qualified and experienced in the following fields:

a) physical coastal environment including physics of waves and currents, statistical properties and propagation of such;

b) marine hydrodynamics, wave and current interaction with structures in general and wave and current actions on structures in the coastal zone including i) fixed structures, and ii) floating structures;

c) advanced methods including probabilistic methodology and physical model testing.

EN 1991-3:2026/prA1 - Eurocode 1 - Actions on structures - Part 3: Actions induced by cranes and machines

Odbor: HZN/TO 548 (Konstrukcijski eurokodovi)

Ustanova izvornika:

Rok za komentiranje: 2026-09-15

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1.1 Scope of EN 1991-3

(1) EN 1991-3 defines actions imposed by cranes and other machines including dynamic effects, if relevant, for the structural design of crane or machine supporting structures.

(2) EN 1991-3 provides guidance on crane classification in terms of dynamic factors and fatigue actions.

(3) EN 1991-3 applies to supporting structures of

— bridge cranes, gantry cranes and wall cranes travelling on fixed runways;

— fixed machines that cause a harmonic dynamic loading on fixed supporting structures.

(4) The principles provided in EN 1991-3 can be applied also to determine actions on supporting structures of cranes other than those referred to in (3).

(5) EN 1991-3 does not provide partial factors for actions.

NOTE For partial factors for actions, see EN 1990-1:2023+A1:2026, Clause A.5.

(6) EN 1991-3 does not provide actions or provisions for the design of cranes and machines.

1.2 Assumptions

(1) The general assumptions of EN 1990-1 apply.

(2) The design of structures supporting cranes or machines is undertaken using information on actions provided by the manufacturer of the crane or machine.

EN 1991-4:2026/prA1 - Eurocode 1 - Actions on structures - Part 4: Silos and tanks

Odbor: HZN/TO 548 (Konstrukcijski eurokodovi)

Ustanova izvornika:

Rok za komentiranje: 2026-09-15

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1.1 Scope of EN 1991-4

(1) This document provides rules for calculating actions for the structural design of silos and tanks.

NOTE 1 Silos are used for the storage of particulate solids. Tanks are used for the storage of liquids.

NOTE 2 For limitations on rules for silos given in this document, see 1.3.

NOTE 3 For limitations on rules for tanks given in this document, see 1.4.

(2) This document includes some provisions for actions on silo and tank structures that are not only associated with the stored particulate solids or liquids (e.g. the effects of thermal differentials) but substantially affected by them.

NOTE Liquid loads on tanks are very precisely defined. Many loads on silos are not known with great precision. This document provides guidance for many practical situations for which very limited certain knowledge is available, and the information is derived from the limited experimental and analytical information available, coupled with conclusions drawn from failure investigations. The information is not based on a sound statistical treatment of experimental data.

(3) This document is intended for use with concrete, steel, aluminium, timber and FRP storage structures.

NOTE FRP is the standard acronym for fibre reinforced polymer materials.

(4) This document is also applicable for the structural assessment of existing silos and tanks, unless otherwise specified by the relevant authority or, if not specified, agreed between the relevant parties for the specific project.

NOTE 1 Changes in filling or discharge arrangements, changes in the wall friction of inner surfaces, or in the use of the silo, including storage of different particulate solids, can be reasons for assessing existing silos.

NOTE 2 Differentiation of the liquid stored can be a reason for assessing existing tanks.

1.2 Assumptions

(1) The assumptions of EN 1990-1 apply.

(2) This document is intended to be used in conjunction with EN 1990 1, with the other parts of EN 1991, EN 1992, EN 1993, EN 1995, EN 1997, EN 1998 and EN 1999 where relevant to the design of silos and tanks.

1.3 Limitations on silos

1.3.1 Geometrical limitations

(1) The following geometrical limitations apply to the design rules for silos and silo batteries (see 3.2.59 and 3.2.60) covered by this document:

- the silo planform cross-section shapes are limited to those shown in Figure 1.1c.

NOTE 1 Further information concerning planform cross-section geometries is given in Clause 7.

NOTE 2 For the determination of the effective diameter dc of the silo see Figure 1.1c;

- the following dimensional limitations on the aspect ratio for free-standing single cell silos hc/dc, the overall height hb and the effective diameter dc apply (see Figure 1.1):

hc/dc ; < 10 (1.1)

hb ; < 100 m (1.2)

dc ; < 60 m (1.3)

NOTE 3 See Figure 1.1 for hc, dc and hb.

- the structural transition lies in a single horizontal plane (see Figure 1.1a).

[Figure 1.1 - Silo forms showing dimensions and pressure notation]

(2) Only hoppers that are conical (i.e. axisymmetric), rectangular pyramidal with a/b ≤ 1,5, wedge-shaped (i.e. with two vertical end walls on opposite sides) or oblique are covered by this document. Other hopper shapes and hoppers with internal structures require special considerations.

(3) Silos with an oblique conical hopper used to achieve an eccentric outlet are covered by this document.

(4) Silos with an oblique hopper are covered, but generally silos with a systematically non-symmetric geometry are not specifically covered by this document. These situations include a chisel hopper (i.e. a wedge hopper beneath a circular cylinder) and hoppers with an elongated outlet other than wedge shaped.

1.3.2 Limitations on the stored particulate solids

(1) The following limitations on the stored particulate solids apply to the design rules for silos contained in this document:

...

EN 14125:2025/prA1 - Thermoplastic and flexible metal pipework for underground installation at petrol filling stations

Odbor: HZN/TO 534 (Spremnici za teret)

Ustanova izvornika:

Rok za komentiranje: 2026-09-15

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This document specifies requirements for underground pipework systems used to transfer liquid fuels and their vapours at petrol filling stations. Minimum performance requirements covering fitness for purpose, safety and environmental protection are given.

This document is applicable to pipework made from thermoplastics, which can include some degree of reinforcement, and to flexible metal pipework. It does not apply to fibre reinforced thermosets, commonly referred to as glass fibre reinforced plastic (GRP), nor to rigid metals.

This document is applicable to:

- delivery pipes from tanks to dispensers, including positive pressure, vacuum suction and siphon modes;

- fill pipes from road tankers to tanks;

- vapour recovery and vent pipework;

- pipework for secondary containment;

- fittings.

It does not apply to pipework for use with liquefied petroleum gas.

prEN 16723 - Biomethane and other renewable and low-carbon methane rich gases - Specifications for injection in the natural gas network and for mixtures with natural gas as automotive fuel

Odbor: HZN/TU N1 (Nemetalni materijali 1)

Ustanova izvornika:

Rok za komentiranje: 2026-09-15

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This document specifies for

- renewable and low-carbon methane rich gases for injection in the gas network

- natural gas, renewable and low-carbon methane rich gases and mixtures thereof as fuel for engines

This documents also specifies necessary related methods for sampling, analysis, and testing.

This document applies to the previously mentioned gases irrespective of the storage state (compressed or liquefied). To check compliance with some requirements set by the standard, LNG or liquefied biomethane should be re-gasified prior to testing.

prEN 10048 - Hot-rolled narrow steel strip - Tolerances on dimensions and shape

Odbor: HZN/TO 503 (Metalni materijali)

Ustanova izvornika:

Rok za komentiranje: 2026-09-15

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This document specifies tolerances on dimensions and shape for hot rolled uncoated narrow strip and cut lengths of non-alloy and alloy steel grades in accordance with Table 1.

It is usually produced in thickness of 0,8 mm up to and including 16 mm and generally has a rolled width less than 600 mm but is also produced in rolled widths up to and including 720 mm.

Hot-rolled narrow strip has a symmetrical thickness profile with tight crown tolerances and therefore cannot be compared to slit wide strip.

This document also applies to hot-rolled strip for cold rolling.

Table 1 — Field of application

[...table not represented...]

This document can also be used for other steels, e.g.: steels from standards not mentioned in Table 1.

This document does not apply to:

— continuously hot-rolled wide strip and plate/sheet cut from wide strip of non-alloy and alloy steels and narrow strip obtained by slitting wide strip (EN 10051);

— hot-rolled patterned steel strip and plate/sheet cut from wide strip (see EN 10363);

— uncoated or electrolytically coated cold rolled sheet and strip (see EN 10131);

— hot-dip coated steel sheet and strip (EN 10143).

prEN ISO 19085-15 - Woodworking machines - Safety - Part 15: Presses (ISO/DIS 19085-15:2026)

Odbor: HZN/TO 562 (Alatni strojevi i alati)

Ustanova izvornika:

Rok za komentiranje: 2026-09-19

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1.1 This document specifies the safety requirements and measures for
— cold presses,
— hot presses,
— bending presses,
— edge/face gluing presses,
— membrane presses, and
— embossing presses,
where the pressing force is applied by hydraulic, pneumatic or electrical actuators pushing two flat or shaped surfaces against each other, capable of continuous production use, altogether referred to as “machines”.
This document deals with all significant hazards, hazardous situations and events as listed in Annex A, relevant to machines, when operated, adjusted and maintained as intended and under the conditions foreseen by the manufacturer, including reasonably foreseeable misuse. Also, transport, assembly, dismantling, disabling and scrapping phases are taken into account.
1.2 This document is applicable to machines fitted with one or more of the following devices or additional working units, whose hazards have been dealt with:
a) a device for hot gluing;
b) a device for high-frequency gluing in the frequency range from 1 MHz to 400 MHz;
c) a device for high-frequency shaping in the frequency range from 1 MHz to 400 MHz;
d) an automatic workpiece loading and unloading system;
e) an intermediate additional platen;
f) a workpiece extractor;
g) a horizontal pressing system;
h) split moveable platens.
1.3 The machines are designed to process workpieces consisting of:
a) solid wood;
b) materials with similar characteristics to wood (see ISO 19085-1:2021, 3.2), except those with light alloy laminates/edges/profiles for high-frequency presses;
c) wood-based material such as chipboard, fibreboard and plywood composed/laminated with steel sheets/edges/profiles, except for high-frequency presses;
d) honeycomb board;
e) composite boards made from the materials listed above.
1.4 This document does not deal with any hazards related to:
— specific devices that differ from the list above;
— hot fluid heating systems internal to the machine other than electrical;
— any hot fluid heating systems external to the machine;
— operation of taking intermediate platens out and in again;
— the combination of a single machine being used with any other machine (as part of a line).
1.5 This document is not applicable to:
— frame presses;
— membrane presses where the pressing force is applied by vacuum only;
— presses for producing chipboard, fibreboard, OSB;
— machines intended for use in potentially explosive atmosphere;
— machines manufactured before the date of publication of this document.

prEN ISO 3269 - Fasteners - Acceptance inspection (ISO/DIS 3269:2026)

Odbor: HZN/TO 544 (Strojni elementi)

Ustanova izvornika:

Rok za komentiranje: 2026-09-19

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This document specifies an inspection procedure to be used by the purchaser where no prior agreement exists.
It also specifies a reference acceptance procedure for acceptance or rejection of an inspection lot, when no agreement can be reached between the purchaser and the supplier, or where conformance to specification is disputed.
It applies to inspection lots of bolts, screws, studs, nuts, pins, washers, rivets and other related fasteners.
This document applies to fasteners not intended for high volume machine assembly, special-purpose applications or specially engineered applications requiring more advanced in-process control and lot traceability.
For in-process control or final inspection by the manufacture and sorting, see ISO 16426.

prEN ISO 13160 - Water quality - Strontium 90 and strontium 89 - Test methods using liquid scintillation counting or proportional counting (ISO/DIS 13160:2026)

Odbor: HZN/TO 147 (Kvaliteta vode)

Ustanova izvornika:

Rok za komentiranje: 2026-09-19

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This document specifies conditions for the determination of 90Sr and 89Sr activity concentration in samples of environmental water using liquid scintillation counting (LSC) or proportional counting (PC).
The method is applicable to test samples of drinking water, rainwater, surface and ground water, marine water, as well as cooling water, industrial water, domestic, and industrial wastewater after proper sampling and handling, and test sample preparation. Filtration of the test sample and a chemical separation are required to separate and purify strontium from a test portion of the sample.
The detection limit depends on the sample volume, the instrument used, the sample count time, the background count rate, the detection efficiency and the chemical yield. The method described in this document, using currently available LSC counters, has a detection limit of approximately 10 mBq l−1 and 2 mBq l−1 for 89Sr and 90Sr, respectively, which is lower than the WHO criteria for safe consumption of drinking water (100 Bq·l−1 for 89Sr and 10 Bq·l−1 for 90Sr)[3]. These values can be achieved with a counting time of 1 000 min for a sample volume of 2 l.
The methods described in this document are applicable in the event of an emergency situation. When fallout occurs following a nuclear accident, the contribution of 89Sr to the total amount of radioactive strontium is not negligible. This document provides test methods to determine the activity concentration of 90Sr in presence of 89Sr.
The analysis of 90Sr and 89Sr adsorbed to suspended matter is not covered by this method.
It is the user’s responsibility to ensure the validity of this test method selected for the water samples tested.

prEN ISO 11494 - Jewellery and precious metals - Determination of platinum - ICP-OES method using an internal standard element (ISO/DIS 11494:2026)

Odbor: HZN/TU N1 (Nemetalni materijali 1)

Ustanova izvornika:

Rok za komentiranje: 2026-09-20

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This document describes an analytical procedure for the determination of platinum in platinum alloys with a nominal content up to 990 ‰ (parts per thousand), including alloys according to ISO 9202.

prEN ISO 11495 - Jewellery and precious metals - Determination of palladium - ICP-OES method using an internal standard element (ISO/DIS 11495:2026)

Odbor: HZN/TU N1 (Nemetalni materijali 1)

Ustanova izvornika:

Rok za komentiranje: 2026-09-20

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This document describes an analytical procedure for the determination of palladium in palladium alloys with a nominal content up to 990 ? (parts per thousand), including alloys according to ISO 9202.

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