NT Technical Reports Archive - This is the subtitle

Here you can find and download all published NT Technical Reports.

NT Technical Reports Files - Subtitle above the items

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Method of Software Validation (NT TR 535 - Appendix 3)

NT TR 535 - Appendix 3

  • This Method of Software Validation is a tool intended to assist in validation of small and medium scale software used in accredited and other laboratories where software validation is required. The tool encompasses this technical report, which describes how to use the method and a Microsoft® Word 2000 report template, which guides the user through the validation task.

File size: 235.72 KB Download

Method of Software Validation (NT TR 535 - Appendix 2)

NT TR 535 - Appendix 2

  • This Method of Software Validation is a tool intended to assist in validation of small and medium scale software used in accredited and other laboratories where software validation is required. The tool encompasses this technical report, which describes how to use the method and a Microsoft® Word 2000 report template, which guides the user through the validation task.

File size: 236.50 KB Download

Method of Software Validation (NT TR 535 - Appendix 1)

NT TR 535 - Appendix 1

  • This Method of Software Validation is a tool intended to assist in validation of small and medium scale software used in accredited and other laboratories where software validation is required. The tool encompasses this technical report, which describes how to use the method and a Microsoft® Word 2000 report template, which guides the user through the validation task.

File size: 513.25 KB Download

Inter-laboratory comparison of fatigue test with evaluation of the participating laboratories calculations of measurement uncertainty (NT TR 533)

NT TR 533

  • In this paper a fatigue testing inter-laboratory comparison is presented. Six Nordic laboratories performed fatigue tests on steel specimens. The specimens were tested with different stress levels (460 MPa, 430 MPa and 400 MPa) and with the load ratio R=Smin/Smax =0.1. On each level four specimens were tested. The participating laboratories reported the results together with measurement uncertainty.

File size: 3.05 MB Download

Round Robin test on heat exchanger or district heating (NT TR 532)

NT TR 532

  • Four partners from three Nordic countries carried out for the first time a Round Robin test on a heat exchanger designed for district heating applications. The aim was to investigate the level of uncertainty achieved in determining the thermal capacity and pressure losses in a heat exchanger.

File size: 922.79 KB Download

Field test method for the easurement of filter efficiency (NT TR 531)

NT TR 531

  • Ventilation filters are normally classified with the aid of standard laboratory tests. The most well known standards are the European standard EN779 (Anon. 1993) and the corresponding American standard ASHRAE 52.2 (Anon. 1999). Standard tests, however, produce information which may be insufficient for estimating the true filter performance.

File size: 579.54 KB Download

Nordic Round Robin and Investigation on IMO Resolution A 653 (16) (NT TR 529)

NT TR 529

  • This Nordtest Project critically examines the deviations from the IMO resolution A.653 (16) method, which the participating laboratories either uses or has been using, that being deviations from: the equipment, the procedures or the interpretation of data. These deviations are in many cases a result on the imprecise and equivocal description of the method described in the IMO resolution A.653 (16) in FTP Code.

File size: 960.76 KB Download

Methods for test of reinforcement material properties based on mix of stainless steel and carbon steel (NT TR 528)

NT TR 528

  • The project describes methods for testing of corrosion resistance and mechanical properties of reinforcing steel consisting of stainless steel and carbon steel. Methods for testing of mechanical properties (tensile strength and fatigue) are based on the existing standards for traditional carbon steel reinforcement, NS 3420, NS 3575, NS-EN 288-3, NS 480, NS 3473 and ASTM E 739-1.

File size: 4.01 MB Download

Improving heat fluxmeter calibration for fire testing laboratories (HFCAL) (NT TR 527)

NT TR 527

  • Tests of resistance to fire, representing fully developed fires, use more and more often heat flux gauges. In reaction to fire testing the initial stages of the fire are considered, ranging from smouldering cigarettes to small flames and "Single Burning Items". To characterise the thermal load to the test specimen, all national and international test methods need a direct measurement of the heat flux incident on the specimen.

File size: 7.76 MB Download

Method for measurement of complex microstructures using image processing (NT TR 526)

NT TR 526

  • The objective of the Nordtest project is to come up with recommended guidelines for sample preparation, image acquisition and analysis of the ?-phase of the microstructure. The outset of our study is based on questionnaire to nine laboratories in Europe active in the field. The routines used are reviewed.

File size: 1.34 MB Download

Transport and fate of surfactants in the aquatic environment (NT TR 524)

NT TR 524

  • A literature review of environmental properties of surfactants is given. The fate of surfactants in sewage systems was investigated, i.e. the anaerobe biodegradability, bioaccumulation and toxicity towards aquatic and sediment-living organisms.

File size: 729.09 KB Download

Environmental risk assessment of genetically modified organisms (GMOs) - Identification of Data Needs (NT TR 523)

NT TR 523

  • It was the aim of this NordTest project to propose improvements that prepare us to assess ecological risks to the environment associated with releases of existing and coming GMO cases.

File size: 805.87 KB Download

An experimental comparison between isothermal calorimetry, semi-adiabatic calorimetry and solution calorimetry for the study of cement hydration (NT TR 522)

NT TR 522

  • This is the final report from NORDTEST project 1534-01 in which four Nordic and one US partners have made hydration measurements on two types of cement with different calorimetric methods.

File size: 1.55 MB Download

Calibration of the electrochemical methods for the corrosion rate measurement of steel in concrete (NT TR 521)

NT TR 521

  • In this study, steel bars were embedded in concrete slabs with different chloride introductions (0%, 1.5%, 3% and 6 % by mass of cement) in order to induce corrosion at different rates.

File size: 1.33 MB Download

Acceptance criteria for landfilling of waste under nordic conditions (NT TR 520)

NT TR 520

  • In the report the various classes and sub-categories of landfills that are possible within the framework of the EU Landfill Directive are presented and discussed, and the need within the Nordic countries for sub-categories of the three main classes of landfills (inert, non-hazardous and hazardous waste landfills) is evaluated.

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: 858.82 KB Download

Biotests and guidelines for investigations of biochemical disorders based upon characterisation of pollutants in landfill leachates (NT TR 518)

NT TR 518

  • The objective of this project is to investigate if leachate from Norwegian landfills affect the reproductive system in fish, similar to what is found in Lake Molnbyggen in Sweden, and to evaluate and, if necessary, to adapt existing tests for biological characterisation of leachate to see whether they are suitable for detecting such disorders.

File size: 1.14 MB Download

Whole body vibration in mobile machinery - A pilot study of consequences of new evaluation methods (NT TR 516)

NT TR 516

  • Whole-body vibration emission from mobile workplaces must, in order to meet the EU ‘Machinery Directive’, be declared. A number of methods for the evaluation of whole-body vibration exposure have been standardised. Depending on the choice of evaluation method different conclusions as to the vibration exposure can be reached.

File size: 533.32 KB Download

Determination of work place noise exposure - Consideration of measurements, calculations and uncertainty (NT TR 515)

NT TR 515

  • The aim of the present work is to prepare a Nordtest-method in two parts, namely a simple method for use to safety deputies, persons in industrial or occupational hygiene or in occupational health care etc., and a more advanced method requiring a great deal of competence in acoustics in order to achieve better accuracy in measurement results, if needed.

File size: 718.65 KB Download

Nordic standard interface for transfer of data and graphics between proficiency test webs and statistical software (NT TR 513)

NT TR 513

  • In this project an XML/DTD standard has been tested for exchange of data and graphics between web pages and statistical software. It has been demonstrated how the most common and essential dataset/structures used in proficiency testing, could be specified.

File size: 928.38 KB Download

Grunnlag for revisjon av prøvemetoden NT BUILD 307 (NT TR 510rev)

NT TR 510rev

  • The report accounts for judgements and tests that are carried out as a background for the revision of method NT Build 307 "Roof Coverings; Wind load resistance" originally published in November 1986. The goal of the revision was to define the method more precisely, to give a better description of the test rig and the routines concerning applying and testing.

File size: 948.86 KB Download

Grunnlag for revisjon av prøvemetoden NT BUILD 307 (NT TR 510)

NT TR 510

  • The report accounts for judgements and tests that are carried out as a background for the revision of method NT Build 307 "Roof Coverings; Wind load resistance" originally published in November 1986. The goal of the revision was to define the method more precisely, to give a better description of the test rig and the routines concerning applying and testing.

File size: 5.06 MB Download

Grunnlag for revisjon av prøvemetoden NT BUILD 306 (NT TR 507)

NT TR 507

  • The method NT Build 306 is a small-scale test method for determination of pull out strength of mechanical fasteners. On behalf of Nordtest a project has been carried out to create the basis to revise the method.

File size: 739.95 KB Download

Consensus meeting on chemical testing of emission from building products (NT TR 506a)

NT TR 506a

  • This report gives the results and recommendations of NT project 1484-00 on establishment of a consensus concerning test conditions for chemical emission testing in the Nordic countries.

File size: 647.39 KB Download

Consensus meeting on chemical testing of emission from building products (NT TR 506)

NT TR 506

  • This report gives the results and recommendations of NT project 1484-00 on establishment of a consensus concerning test conditions for chemical emission testing in the Nordic countries.

File size: 2.25 MB Download

Study to characterize thermal convection effects in water (NT TR 501)

NT TR 501

  • The careful hydrostatic weighing measurements with alternative preparations performed could not verify the working hypothesis of an existing very thin air layer on objects immersed into water, a problem that occurs whenever primary density determinations are carried out.

File size: 2.34 MB Download

Method for determination of chloride threshold values for steel in concrete (NT TR 500)

NT TR 500

  • The aim with this project was to establish a common Nordic test method for determining chloride threshold values in concrete.

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