Study of Technology for Detecting Pre-Ignition Conditions of ... - NIST

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attenuation trends, and heating periods were similar for each of these tests.
3.9 Re-Ignition Behavior
CPSC-JAG95-1145
Re-ignition occurred frequently for the tests with oil cooked on the electric range in
stainless steel pans after the oil was extinguished with the lid. The residual heating ability of the
de-energized electric burner built up very high temperatures within the closed pans. Attention
should be given to this phenomenon because current recommended safety practices may not take
it into account. A high capacity fire extinguisher maybe necessary to completely extinguish such
a fire with or without initial extinguishment with the lid.
4.0 Literature Search
4.1 Objectives
The second major activity of this project was the identification of methods, materials, and
devices with potential to detect and react to pre-ignition conditions. This was accomplished with
a literature and patent search. The search focused on technologies capable of detecting one or
more cooking-related signatures and the control technologies capable of shutting off gas and
electric ranges in the event of a danger signal from a detector. The bibliographical reference
itiormation related to these technologies is provided in Append~x A.
4.2 Search Databases and Strategies
4.2.1 Databases
The databases that were searched were NIST’S fire document collection (FIREDOC),
Engineering Index (EI), National Technical Information Service (NTIS), and Derwent World
Patent Index (WPI). FIREDOC is a database managed by the Fire Research Information Services
at NIST. The documents contained in FIREDOC primarily are related to fire, smoke, flame, and
combustion fields, although the database has started to include research literature associated with
building technology as well. FIREDOC was the primary resource for investigating technologies
related to smoke detection because the subject has been thoroughly researched and documented
at NIST and elsewhere. FIREDOC was not helpfi.d at all, however, in the investigation into
control technologies.
The EI and NTIS databases, while covering the broad range of all scientific research, also
contain several orders of magnitude more papers than FIREDOC. These databases were very
helpfil in finding research reports that are indirectly related to or unrelated to fire or smoke, but
could have bearing on this project’s objectives. NTIS also contains literature that has limited
publication and distribution. EI and NTIS were more helpful than FIREDOC in obtaining
controls references. The detector patent search was limited to smoke detectors. A controls search
was also conducted using the patent database.
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