CEN/TR 16988:2016

Estimation of uncertainty in the single burning item test

The measuring technique of the SBI (single burning item) test instrument is based on the observation that, in general, the heats of combustion per unit mass of oxygen consumed are approximately the same for most fuels commonly encountered in fires (Huggett [12]). The mass flow, together with the oxygen concentration in the extraction system, suffices to continuously calculate the amount of heat released. Some corrections can be introduced if CO2, CO and/or H2O are additionally measured.

Messunsicherheit - Thermische Beanspruchung durch einen einzelnen brennenden Gegenstand (SBI)

Ocena negotovosti s preskusom enega samega gorečega predmeta

Merilna tehnika instrumenta za preskušanje gorljivosti posameznega predmeta (SBI) temelji na ugotovitvi, da je toplota zgorevanja na enoto mase porabljenega kisika na splošno približno enaka za večino goriv, ki so običajna pri požarih (Huggett [12]). Masni pretok skupaj s koncentracijo kisika v sistemu za odvajanje zadostuje za neprekinjeno izračunavanje količine sproščene toplote. Nekateri popravki se lahko uporabijo, če se dodatno izmerijo vrednosti CO2, CO in/ali H2O.

General Information

• Status: Published
• Publication Date: 26-Jul-2016
• ICS: 17.200.01 - Thermodynamics in general
• Technical Committee: CEN/TC 127 - Fire safety in buildings
• Drafting Committee: CEN/TC 127/WG 4 - Reaction to fire
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 27-Jul-2016
• Due Date: 30-Jan-2017
• Completion Date: 27-Jul-2016
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Mandate: M/117 - Horizontal complement to the mandates to CEN/CENELEC concerning the execution of standardization work for the valuation of construction products and elements in respect of their resistance to fire
• Ref Project: SIST-TP CEN/TR 16988:2016 - Estimation of uncertainty in the single burning item test

Standards Content (Sample)

SLOVENSKI STANDARD
SIST-TP CEN/TR 16988:2016
01-november-2016
2FHQDQHJRWRYRVWLVSUHVNXVRPHQHJDVDPHJDJRUHþHJDSUHGPHWD
Estimation of uncertainty in the single burning item test
Messunsicherheit - Thermische Beanspruchung durch einen einzelnen brennenden
Gegenstand (SBI)
Ta slovenski standard je istoveten z: CEN/TR 16988:2016
ICS:
13.220.40 Sposobnost vžiga in Ignitability and burning
obnašanje materialov in behaviour of materials and
proizvodov pri gorenju products
SIST-TP CEN/TR 16988:2016 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TP CEN/TR 16988:2016

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SIST-TP CEN/TR 16988:2016


CEN/TR 16988
TECHNICAL REPORT

RAPPORT TECHNIQUE

July 2016
TECHNISCHER BERICHT
ICS 17.200.01
English Version

Estimation of uncertainty in the single burning item test
 Messunsicherheit - Thermische Beanspruchung durch
einen einzelnen brennenden Gegenstand (SBI)


This Technical Report was approved by CEN on 4 July 2016. It has been drawn up by the Technical Committee CEN/TC 127.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. CEN/TR 16988:2016 E
worldwide for CEN national Members.

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SIST-TP CEN/TR 16988:2016
CEN/TR 16988:2016 (E)
Contents Page
European foreword . 4
1 Scope . 5
1.1 General . 5
1.2 Calculation procedure . 5
1.2.1 Introduction . 5
1.2.2 Synchronization of data . 5
1.2.3 Heat output . 5
2 Uncertainty . 9
2.1 Introduction . 9
2.2 Elaboration of terms and concepts . 11
2.2.1 Mean and variance . 11
2.2.2 Estimation of the confidence interval for the population mean . 12
2.2.3 Sources of uncertainty . 12
2.2.4 Standard uncertainties for different distributions . 12
2.2.5 Combined uncertainty . 15
2.2.6 Expanded uncertainty . 16
2.2.7 Uncorrected bias . 16
2.3 Combined standard uncertainties . 17
2.3.1 Combined standard uncertainty on su
...