Items starting with H Files

File size: 152.03 KB Download

Heating plants, small primary: Annual efficiency (NT VVS 107

NT VVS 107

  • This Nordtest method shows a test and calculation model for the assessment and comparison of annual efficiencies of small primary heating plants, especially non-condensing oil or gas fired boilers for central heating plants in one or two-family houses.

File size: 56.92 KB Download

Heating systems, deaerators: Capacity and efficiency, various water flows (NT VVS 090)

NT VVS 090

  • This NORDTEST method describes tests of maximum deaeration capacity and deaeration efficiency at various water flows for deaerators.

File size: 312.58 KB Download

Heat meters: Combined or complete instrument,performance test (NT VVS 085)

NT VVS 085

  • This NORDTEST method is designed for evaluating heat meters for the purpose of pattern approval.

File size: 141.18 KB Download

Heat recovery units: Functioning at low outdoor temperatures (NT VVS 025)

NT VVS 025

  • This NORDTEST method describes a test for testing the functioning of a heat recovery unit at low outdoor temperatures.

File size: 141.01 KB Download

Heat recovery units: Temperature efficiency (NT VVS 024)

NT VVS 024

  • This NORDTEST method describes a test for the determination of the temperature efficiency of a heat recovery unit.

File size: 35.93 KB Download

Heat recovery units: Air flow capacity (NT VVS 023)

NT VVS 023

  • This NORDTEST method describes a test for the determination of the air flow capacity of a heat recovery unit.

File size: 207.44 KB Download

Heat recovery units: Internal leakage (NT VVS 022)

NT VVS 022

  • This NORDTEST describes a test for the determination of internal leakage of air between the exhaust air and supply air systems of the unit.

File size: 147.99 KB Download

Heat recovery units: External leakage (NT VVS 021)

NT VVS 021

  • This NORDTEST method describes a test for the determination of air leakage between a heat recovery unit and the atmosphere.

File size: 123.17 KB Download

Heat meters - liquid flow: Calibration (NT VVS 020)

NT VVS 020

  • This NORDTEST method is designed to evaluate heat meters for the purpose of pattern approval.

File size: 66.96 KB Download

Hot water heaters, enamelled: Internal corrosion resistance (NT VVS 017)

NT VVS 017

  • This NORDTEST method may be used for the testing and estimation of resistance against corrosion obtained by internal enamelling in hot water heaters made from steel.

File size: 72.22 KB Download

Hot water supply systems – compression fittings for plastic pipes: Tightness (NT VVS 011)

NT VVS 011

  • This NORDTEST method specifies a test method to check whether or not joints between unions and pipes are watertight when subjected to temperature changes with and without tension in the joints, such as, bending, water hammering etc which occur in water pipes.

File size: 4.52 MB Download

HANDBOOK - Environmental Assessment of Construction Products - An introduction to test methods and other procedures related to CE-marking (NT TR 618)

NT TR 618

  • This handbook presents an overview of the technical, regulatory and administrative framework within which CE marking of construction products takes place and offers guidance on the selection of test methods for assessment of release of regulated dangerous substances from construction products to soil, surface water and groundwater. The handbook includes information on how test results can be used, e.g. by regulators when comparing regulatory limit values with test results.

File size: 2.09 MB Download

Harmonized methods for assessment of release of dangerous substances from construction products - Nordic status (NT TR 598)

NT TR 598

  • This project was developed in the context of the new standardisation work under CEN related to the third essential requirement (ER3) concerning Hygiene, Health and the Environment stipulated by the Construction Products Directive (CPD). The project aims particularly to evaluate the importance of harmonising test methods for regulated substances in the Nordic countries and also to address the Nordic interest for CE-labelling of construction products.

File size: 2.41 MB Download

Handbook for calculation of measurement uncertainty in environmental laboratories (NT TR 537 - Serbian version)

NT TR 537 - Serbian version

  • This handbook is written for environmental testing laboratories in the Nordic countries, in order to give support to the implementation of the concept of measurement uncertainty for their routine measurements.

File size: 3.09 MB Download

Handbook for calculation of measurement uncertainty in environmental laboratories (NT TR 537 - Greek version)

NT TR 537 - Greek version

  • This handbook is written for environmental testing laboratories in the Nordic countries, in order to give support to the implementation of the concept of measurement uncertainty for their routine measurements.

File size: 750.93 KB Download

Håndbok for beregning af måleusikkerhed på miljølaboratorier (NT TR 537 - Danish version)

NT TR 537 - Danish version

  • This handbook is written for environmental testing laboratories in the Nordic countries, in order to give support to the implementation of the concept of measurement uncertainty for their routine measurements.

File size: 905.02 KB Download

Handbook for calculation of measurement uncertainty in environmental laboratories (NT TR 537 - Edition 3.1)

NT TR 537

  • This handbook is written for environmental testing laboratories in the Nordic countries, in order to give support to the implementation of the concept of measurement uncertainty for their routine measurements.

File size: 1.60 MB Download

Hydrogen monitoring in geothermal plants and oil and gas refineries (NT TR 474)

NT TR 474

  • The effluent hydrogen flux from a pressure vessel or pipe in hydrogenating service is a measure of the diffusible hydrogen concentration in the steel, and hence also of the possible hydrogenation reactions on the inside and the propensity to hydrogen induced disintegration of the steel wall.

File size: 49.63 KB Download

Hot surfaces: Ultrasonic testing (NT NDT 012)

NT NDT 012

  • This Nordtest method specifies procedures for weld testing and wall thickness measurements on hot surfaces by manually operated as well as automated ultrasonics.

File size: 145.10 KB Download

High temperature components in power plants: Remnant lifetime assessment, replica inspection (NT NDT 010)

NT NDT 010

  • This instruction covers the method to be used in production and evaluation of field metallographic replicas.

File size: 20.57 KB Download

Helmets - fall test equipment: Calibration (NT MECH 008)

NT MECH 008

  • The method is used to calibrate fall test machines used for the testing of certain types of safety helmets.

File size: 55.43 KB Download

Hand-operated hoists: mechanical strength, functioning and safety (NT MECH 003)

NT MECH 003

  • This NORDTEST method is intended for the testing of mechanical strength, functioning and safety of hand-operated hoists.

File size: 518.81 KB Download

Heat flux meters: Calibration (NT FIRE 050)

NT FIRE 050

  • This is a method for calibration of heat flux meters which are exposed to a well defined radiation from a radiant heat source.

File size: 31.13 KB Download

Heat meters - temperature sensors: Evaluation (NT ELEC 026)

NT ELEC 026

  • This Nordtest method is designed to evaluate heat meters - temperature sensors for the purpose of pattern approval.

File size: 47.71 KB Download

Hygroscopic properties of fire-retardant treated wood and wood-based products (NT BUILD 504)

NT BUILD 504

  • This test method prescribes the procedure for determining the equilibrium moisture content of fire-retardant treated (FRT) wood and wood-based product samples after exposure to a standard high relative humidity condition of 90 ± 3% at 27 ± 2°C.

File size: 56.78 KB Download

Hearing aids: Electroacoustical properties using broad band input signals (NT ACOU 096)

NT ACOU 096

  • This NORDTEST method applies to hearing aids having automatic gain control (AGC) or similar adaptive circuitry. The method uses broad band noise to give reproducible characteristics of the electroacoustical properties of a hearing aid.

File size: 99.19 KB Download

Hearing aid - induction loop systems: Measurement of the magnetic field characteristics (NT ACOU 014)

NT ACOU 014

  • This NORDTEST method applies to complete audio induction loop systems for hearing aid purposes, permanently installed in rooms and consisting of signal sources (e.g. microphones), amplifiers and induction loops. Parts of the method described may, where relevant, also apply to other induction loop systems.

Nordtest

Nordtest is a trademark of Nordic cooperation in conformity assessment. The emphasis of Nordtest is to develop, promote and innovate Nordic test methods and pre-normative activity. Nordtest endeavours to remove technical barriers to trade and promotes the concept: “Approved once, accepted everywhere”.