Items starting with U Files

File size: 1.92 MB Download

Uncertainty calculations for calibration of water and heat flow meters (NT VVS 131)

NT VVS 131

  • The aim of this method is to provide a basis for uncertainty calculations for testing/calibrating/verifying the flow measurement part of water and heat meters. The method is designed for being used as a guideline in combination with existing standards for flow measurement and uncertainty calculations.

File size: 2.42 MB Download

Uncertainty from sampling - A NORDTEST handbook for sampling planners on sampling quality assurance and uncertainty estimation (NT TR 604)

NT TR 604

  • The handbook provides practical guidance on sampling uncertainty estimation in the Nordtest TR handbook format. The handbook is an extract of and based upon the principles, methods and text of the international Eurachem Guide Estimation of measurement uncertainty arising from sampling. The Eurachem guide is more extensive and provides details on theory and additional examples. The basic reference for the text in this handbook is the above-mentioned Eurachem guide.

File size: 1.30 MB Download

Undersøgelse af mulighederne for automatisering af kolonnetesten NT ENVIR 002 (NT TR 519a)

NT TR 519a

  • The column test NT ENVIR 002 is used to obtain information on the leaching behaviour and characteristics of solid materials especially at low liquid/solid (L/S) ratio. The column test can therefor be used to evaluate the leachability of different compounds under landfill-like conditions.

File size: 1.28 MB Download

Undersøgelse af mulighederne for automatisering af kolonnetesten NT ENVIR 002 (NT TR 519)

NT TR 519

  • The column test NT ENVIR 002 is used to obtain information on the leaching behaviour and characteristics of solid materials especially at low liquid/solid (L/S) ratio. The column test can therefor be used to evaluate the leachability of different compounds under landfill-like conditions.

File size: 2.52 MB Download

Uncertainty in heat flux calibrations performed according to NT FIRE 050 (NT TR 494)

NT TR 494

  • The combined expanded uncertainty for calibrations according to NT FIRE 050 performed in the furnace at SP is calculated and presented. The result is presented in tables so that the parameters that contributes most to combined uncertainty is easily recognized.

File size: 1.38 MB Download

Uncertainties in measuring heat and smoke release rates in the room or corner test and the SBI test (NT TR 477)

NT TR 477

  • When performing fire testing and classifying materials, Heat Release Rate (HRR) and Smoke Production Rate (SPR) are two of the most important quantities to determine. In this work, the individual sources of errors are defined for the HRR and the SPR calculations, with regard to the Room/Corner Test and the Single Burning Item (the SBI) test.

File size: 2.51 MB Download

Use of lysimeters for characterisation of leaching from soil and mainly inorganic waste materials (NT TR 473)

NT TR 473

  • The understanding and interpretation of leaching processes have improved significantly during the past two decades and several Nordic countries have implemented the use of leaching tests in recent or pending legislation on utilisation and landfilling of waste and contaminated soil. This progress is based mainly on experience from laboratory experiments in combination with modelling work but also on the use of field lysimeters.

File size: 714.73 KB Download

Undersøgelse af grundlaget for anvendelse af batchudvaskningstesten NT ENVIR 005 i forbindelse med testning af udvaskningen af sporelementer fra jord (NT TR 461a)

NT TR 461a

  • The project has resulted in a proposal for a test protocol for a batch leaching test applicable to soil, based on an experimentally based study of the influence of various test conditions on the performance and results of the test.

File size: 758.61 KB Download

Undersøgelse af grundlaget for anvendelse af batchudvaskningstesten NT ENVIR 005 i forbindelse med testning af udvaskningen af sporelementer fra jord (NT TR 461)

NT TR 461

  • In the Nordic countries there is an increasing interest in the use of leaching-based criteria in the regulation of utilisation and landfilling of waste materials and contaminated soil. The project has resulted in a proposal for a test protocol for a batch leaching test applicable to soil.

File size: 249.71 KB Download

Upholstered furniture: Burning behaviour - Full scale test (NT FIRE 032)

NT FIRE 032

  • This method is intended to be used for the evaluation of fire behaviour of upholstered furniture in full scale. The specimen is ignited by a specified ignition source and burns freely under well ventilated conditions.

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”.