Re: Hot Flaming Oil Test related to test for escape of flaming gasses ?
Richard, Having witness several GR-63-CORE Fire resistance test I can tell you that this theory seems to be true but only at the early stage of the fire. As the metal heats up then flames start to be able to pass through the holes. The opinion expressed here are my own and does not necessarily reflect that of my employer. Daniel Sicard Compliance Engineer / Ingénieur Certification Marconi Communications - Optical Network Corp Tel: 514-685-1737 Ext. 4631 Fax: 514-822-4077 E-mail: mailto:daniel.sic...@marconi.com Web: http://www.marconi.com wo...@sensormatic.com on 09/11/2000 12:58:21 PM Please respond to wo...@sensormatic.com To: emc-p...@majordomo.ieee.org cc:(bcc: Daniel Sicard/MAIN/MC1) Subject: Hot Flaming Oil Test related to test for escape of flaming gasses ? Great information on the hot oil test. I only wish for a similarly well defined test for checking top and side openings to see if they extinguish flames from burning gases, but such a procedure does not seem to exist. The theory is that the temperature of the flaming gas is lowered below the ignition point as the gas passes through the holes. Thus, the theory is similar to that of flaming oil. Does anyone have a clue as to the affect of the flame variables (temperature, flame cone location relative to the holes, gas type, etc.), hole variables (shape, size, spacing, material, thickness, etc) and time have on the extinguishing effect? I have some data on the size and spacing someone posted in the past for punched metal. I mention time as a variable, since it seems that the exiting gas would increase in temperature as the enclosing material increases with time. I am about to run some tests , so any thoughts you have would be appreciated. Richard Woods --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: Hot Flaming Oil Test
Hi Ed: Great description of your test technique. BTW, I would think that the temperature of the oil in the ladle should be specified, as this seems to be a critical variable. The temperature of the oil is established by the 1-minute burn period (in the ladle) BEFORE the oil is poured on the openings. This assumes that you heat the oil just enough to ignite, and no more. That is why, in my description, I said to heat the oil and continuously attempt to ignite the oil. I believe the oil ignites and burns at something like 55 C. So, it doesn't take much pre-heating to ignite the oil. After it is ignited, the procedure calls for the oil to burn (in the ladle) for one minute before pouring the oil onto the hole pattern. Best regards, Rich --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: Hot Flaming Oil Test
Rich: Great description of your test technique. BTW, I would think that the temperature of the oil in the ladle should be specified, as this seems to be a critical variable. Regards, Ed -Original Message- From: Rich Nute [mailto:ri...@sdd.hp.com] Sent: Wednesday, September 06, 2000 1:13 PM To: kmccormick...@hotmail.com Cc: emc-p...@majordomo.ieee.org Subject: Re: Hot Flaming Oil Test Hi Ken: The standards specify the oil as being: distillate fuel oil which is a medium volitile distillate having a mass per unit volume between 0.845 g/ml and 0.865 g/ml, a flash point between 43.5C and 93.5C and an average calorific value of 38MJ/l. I've found that this is equivalent to ordinary diesel fuel or #2 fuel (heating) oil. I've bought The tools for performing this test in almost any kitchen goods store: all-metal ladle with side-lip (for pouring the oil) large aluminum-foil roasting pan (to contain the poured oil) I found that the standard kitchen ladle was not configured for this test, so I chose an all-metal ladle so I could bend the handle to better suit a controlled pour. The height of the ladle above the holes under test must be controlled to 100 mm. The height is critical to pass/fail. I found that I could better control this parameter by using a rest for the ladle handle adjusted for 100 mm above the holes. The rate of pour is also critical to pass/fail. You should practice the pour several times. I found a big help if someone counted the seconds aloud for me as I poured. (You can't watch a clock and watch the pour at the same time!) The cheesecloth must be located 50 mm below the openings under test. I found that it was best to suspend or support the cheesecloth above the bottom of the pan so as to prevent saturation with the oil collecting in the bottom of the pan. I also used a dam of plumber's putty on the test panel to prevent the oil from spilling over the edge of the test panel. This helps control spilling the oil outside the roasting pan. The test panel needs to be independently supported and level so as to allow the oil to collect over the holes. Note that you are dealing with 3 parameters: hole diameter hole-to-hole spacing metal thickness All of these are critical to pass/fail. As near as I can tell, the process of passing the test is that of cooling the flaming oil by the heat-sinking action of the metal, and by quenching the flame as the oil passes through the hole (i.e., the oil fills the hole such that no oxygen can pass through the hole with the oil and sustain the burning as the oil emerges from the bottom of the metal). Note that you get to repeat the test for a total of 3 successes in succession. Due to the variablility of the test, if you get some passes and some fails, keep testing until you get 3 passes in succession! You'll find that passing is a matter of controlling the test parameters, especially the location above the holes, the rate of pour, and the pour height. Be sure to perform the test in a suitable area such as a fume hood. Also, be prepared to deal with spilled oil, and with spilled burning oil. Have someone standing by with a fire extinguisher at the ready. In the event of a failure, you'll need it to extinguish the oil in the pan (otherwise, it will burn for a long time!). By the way, the hole patterns (Table 15) specified as acceptable in the standard do not necessarily pass the test! Good luck! Let us know how you do! Best regards, Rich ps: Note that the oil will not ignite at room temperature. You can dunk a match in the oil, and the match will be extinguished. You do need to heat the oil slightly before it will burn. Don't heat the oil too much -- just enough to ignite it. Then, you let it burn for 1 minute before the pour; this is all the heat you want for the oil. Any more, and you'll tend to fail the test. Be sure to extinguish the flame you use to heat the oil BEFORE you proceed with the test. Disclaimer: The hot-flaming-oil test is a dangerous test. The preceding comments, observations, and opinions are not complete, are not necessarily accurate, may be ambiguous, and must not be relied upon for the safety of persons conducting such a test or for the accuracy of the test results. :-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-):-) Ed Price ed.pr...@cubic.com Electromagnetic Compatibility Lab Cubic Defense Systems San Diego, CA. USA 858-505-2780 (Voice) 858-505-1583 (Fax) Military Avionics EMC Services Is Our Specialty Shake-Bake-Shock - Metrology - Reliability Analysis
RE: Hot Flaming Oil Test
I hope you don't live in the UK, the cost of the fuel would make the test far too expensive to perform$1.22 for a litre of diesel! Regards Chris Colgan EMC Safety TAG McLaren Audio Ltd mailto:chris.col...@tagmclarenaudio.com -Original Message- From: Kenneth McCormick [SMTP:kmccormick...@hotmail.com] Sent: 08 September 2000 15:06 To: emc-p...@majordomo.ieee.org Subject: RE: Hot Flaming Oil Test I am glad that I was able to assist in allowing Rich to earn his keep. I received several responses both public and privately...most said the same thing, it is a difficult test to conduct and comply with. Many thanks to those that responded, your advice and expertise have given me several good ideas on how to conduct the test and addressed several of the concerns (safety and repeatibility) that I had about the test. Now I'm off to purchase some Diesel... Regards, Ken From: Grant, Tania (Tania) tgr...@lucent.com Reply-To: Grant, Tania (Tania) tgr...@lucent.com To: emc-p...@majordomo.ieee.org, 'John Juhasz' jjuh...@fiberoptions.com Subject: RE: Hot Flaming Oil Test Date: Thu, 7 Sep 2000 12:43:05 -0700 So it took hot flaming oil to assess Rich's worth! _ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org = Authorised on 09/08/00 at 15:50:16; code 37f48bf3F846D393. ** Please visit us at www.tagmclarenaudio.com ** The contents of this E-mail are confidential and for the exclusive use of the intended recipient. If you receive this E-mail in error, please delete it from your system immediately and notify us either by E-mail, telephone or fax. You should not copy, forward or otherwise disclose the content of the E-mail. TAG McLaren Audio Ltd The Summit, 11 Latham Road Huntingdon, Cambs, PE29 6ZU Telephone : 01480 415600 (+44 1480 415600) Facsimile : 01480 52159 (+44 1480 52159) ** Please visit us at www.tagmclarenaudio.com ** --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: Hot Flaming Oil Test
I am glad that I was able to assist in allowing Rich to earn his keep. I received several responses both public and privately...most said the same thing, it is a difficult test to conduct and comply with. Many thanks to those that responded, your advice and expertise have given me several good ideas on how to conduct the test and addressed several of the concerns (safety and repeatibility) that I had about the test. Now I'm off to purchase some Diesel... Regards, Ken From: Grant, Tania (Tania) tgr...@lucent.com Reply-To: Grant, Tania (Tania) tgr...@lucent.com To: emc-p...@majordomo.ieee.org, 'John Juhasz' jjuh...@fiberoptions.com Subject: RE: Hot Flaming Oil Test Date: Thu, 7 Sep 2000 12:43:05 -0700 So it took hot flaming oil to assess Rich's worth! _ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. Share information about yourself, create your own public profile at http://profiles.msn.com. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: Hot Flaming Oil Test
So it took hot flaming oil to assess Rich's worth! My personal respect and gratitude goes out to Rich because he does his own empirical evaluations and tests, something that many of us either do not bother to do or do not have the bandwidth to do because we are busy pushing equipment out the door. Thank you Rich. Tania Grant, tgr...@lucent.com Lucent Technologies, Switching Solutions Group Intelligent Network and Messaging Solutions -- From: John Juhasz[SMTP:jjuh...@fiberoptions.com] Reply To: John Juhasz Sent: Thursday, September 07, 2000 8:16 AM To: emc-p...@majordomo.ieee.org Subject: RE: Hot Flaming Oil Test I second that. Rich is indeed and asset to this board . . . . Thank you Rich. John Juhasz Fiber Options Bohemia, NY -Original Message- From: pgodf...@icomply.com [ mailto:pgodf...@icomply.com] Sent: Thursday, September 07, 2000 9:42 AM To: ri...@sdd.hp.com; kmccormick...@hotmail.com Cc: emc-p...@majordomo.ieee.org Subject: RE: Hot Flaming Oil Test Rich, As many times in the past, I have found your explanation very concise, interesting and informative (noting your 'disclaimer'). Thanks for sharing this with all of us. Phil Godfrey -Original Message- From: Rich Nute [SMTP:ri...@sdd.hp.com] Sent: Wednesday, September 06, 2000 4:13 PM To: kmccormick...@hotmail.com Cc: emc-p...@majordomo.ieee.org Subject: Re: Hot Flaming Oil Test Hi Ken: The standards specify the oil as being: distillate fuel oil which is a medium volitile distillate having a mass per unit volume between 0.845 g/ml and 0.865 g/ml, a flash point between 43.5C and 93.5C and an average calorific value of 38MJ/l. I've found that this is equivalent to ordinary diesel fuel or #2 fuel (heating) oil. I've bought The tools for performing this test in almost any kitchen goods store: all-metal ladle with side-lip (for pouring the oil) large aluminum-foil roasting pan (to contain the poured oil) I found that the standard kitchen ladle was not configured for this test, so I chose an all-metal ladle so I could bend the handle to better suit a controlled pour. The height of the ladle above the holes under test must be controlled to 100 mm. The height is critical to pass/fail. I found that I could better control this parameter by using a rest for the ladle handle adjusted for 100 mm above the holes. The rate of pour is also critical to pass/fail. You should practice the pour several times. I found a big help if someone counted the seconds aloud for me as I poured. (You can't watch a clock and watch the pour at the same time!) The cheesecloth must be located 50 mm below the openings under test. I found that it was best to suspend or support the cheesecloth above the bottom of the pan so as to prevent saturation with the oil collecting in the bottom of the pan. I also used a dam of plumber's putty on the test panel to prevent the oil from spilling over the edge of the test panel. This helps control spilling the oil outside the roasting pan. The test panel needs to be independently supported and level so as to allow the oil to collect over the holes. Note that you are dealing with 3 parameters: hole diameter hole-to-hole spacing metal thickness All of these are critical to pass/fail. As near as I can tell, the process of passing the test is that of cooling the flaming oil by the heat-sinking action of the metal, and by quenching the flame as the oil passes through the hole (i.e., the oil fills the hole such that no oxygen can pass through the hole with the oil and sustain the burning as the oil emerges from the bottom of the metal). Note that you get to repeat the test for a total of 3 successes in succession. Due to the variablility of the test, if you get some passes and some fails, keep testing until you get 3 passes in succession! You'll find that passing is a matter of controlling the test parameters, especially the location above the holes, the rate of pour, and the pour height. Be sure to perform the test in a suitable area such as a fume hood. Also, be prepared to deal with spilled oil, and with spilled burning oil. Have someone standing by with a fire extinguisher at the ready. In the event of a failure, you'll need it to extinguish the oil in the pan (otherwise, it will burn for a long time!). By the way, the hole patterns (Table 15) specified as acceptable in the standard do not necessarily pass the test! Good luck! Let us know how you do! Best regards, Rich ps: Note that the oil will not ignite at room temperature. You can dunk a match
RE: Hot Flaming Oil Test
I second that. Rich is indeed and asset to this board . . . . Thank you Rich. John Juhasz Fiber Options Bohemia, NY -Original Message- From: pgodf...@icomply.com [mailto:pgodf...@icomply.com] Sent: Thursday, September 07, 2000 9:42 AM To: ri...@sdd.hp.com; kmccormick...@hotmail.com Cc: emc-p...@majordomo.ieee.org Subject: RE: Hot Flaming Oil Test Rich, As many times in the past, I have found your explanation very concise, interesting and informative (noting your 'disclaimer'). Thanks for sharing this with all of us. Phil Godfrey -Original Message- From: Rich Nute [SMTP:ri...@sdd.hp.com] Sent: Wednesday, September 06, 2000 4:13 PM To: kmccormick...@hotmail.com Cc: emc-p...@majordomo.ieee.org Subject: Re: Hot Flaming Oil Test Hi Ken: The standards specify the oil as being: distillate fuel oil which is a medium volitile distillate having a mass per unit volume between 0.845 g/ml and 0.865 g/ml, a flash point between 43.5C and 93.5C and an average calorific value of 38MJ/l. I've found that this is equivalent to ordinary diesel fuel or #2 fuel (heating) oil. I've bought The tools for performing this test in almost any kitchen goods store: all-metal ladle with side-lip (for pouring the oil) large aluminum-foil roasting pan (to contain the poured oil) I found that the standard kitchen ladle was not configured for this test, so I chose an all-metal ladle so I could bend the handle to better suit a controlled pour. The height of the ladle above the holes under test must be controlled to 100 mm. The height is critical to pass/fail. I found that I could better control this parameter by using a rest for the ladle handle adjusted for 100 mm above the holes. The rate of pour is also critical to pass/fail. You should practice the pour several times. I found a big help if someone counted the seconds aloud for me as I poured. (You can't watch a clock and watch the pour at the same time!) The cheesecloth must be located 50 mm below the openings under test. I found that it was best to suspend or support the cheesecloth above the bottom of the pan so as to prevent saturation with the oil collecting in the bottom of the pan. I also used a dam of plumber's putty on the test panel to prevent the oil from spilling over the edge of the test panel. This helps control spilling the oil outside the roasting pan. The test panel needs to be independently supported and level so as to allow the oil to collect over the holes. Note that you are dealing with 3 parameters: hole diameter hole-to-hole spacing metal thickness All of these are critical to pass/fail. As near as I can tell, the process of passing the test is that of cooling the flaming oil by the heat-sinking action of the metal, and by quenching the flame as the oil passes through the hole (i.e., the oil fills the hole such that no oxygen can pass through the hole with the oil and sustain the burning as the oil emerges from the bottom of the metal). Note that you get to repeat the test for a total of 3 successes in succession. Due to the variablility of the test, if you get some passes and some fails, keep testing until you get 3 passes in succession! You'll find that passing is a matter of controlling the test parameters, especially the location above the holes, the rate of pour, and the pour height. Be sure to perform the test in a suitable area such as a fume hood. Also, be prepared to deal with spilled oil, and with spilled burning oil. Have someone standing by with a fire extinguisher at the ready. In the event of a failure, you'll need it to extinguish the oil in the pan (otherwise, it will burn for a long time!). By the way, the hole patterns (Table 15) specified as acceptable in the standard do not necessarily pass the test! Good luck! Let us know how you do! Best regards, Rich ps: Note that the oil will not ignite at room temperature. You can dunk a match in the oil, and the match will be extinguished. You do need to heat the oil slightly before it will burn. Don't heat the oil too much -- just enough to ignite it. Then, you let it burn for 1 minute before the pour; this is all the heat you want for the oil. Any more, and you'll tend to fail the test. Be sure to extinguish the flame you use to heat the oil BEFORE you proceed with the test. Disclaimer: The hot-flaming-oil test is a dangerous test. The preceding comments, observations, and opinions are not complete, are not necessarily accurate, may be ambiguous, and must not be relied upon for the safety of persons conducting such a test or for the accuracy of the test results. --- This message is from
RE: Hot Flaming Oil Test
Rich, As many times in the past, I have found your explanation very concise, interesting and informative (noting your 'disclaimer'). Thanks for sharing this with all of us. Phil Godfrey -Original Message- From: Rich Nute [SMTP:ri...@sdd.hp.com] Sent: Wednesday, September 06, 2000 4:13 PM To: kmccormick...@hotmail.com Cc: emc-p...@majordomo.ieee.org Subject: Re: Hot Flaming Oil Test Hi Ken: The standards specify the oil as being: distillate fuel oil which is a medium volitile distillate having a mass per unit volume between 0.845 g/ml and 0.865 g/ml, a flash point between 43.5C and 93.5C and an average calorific value of 38MJ/l. I've found that this is equivalent to ordinary diesel fuel or #2 fuel (heating) oil. I've bought The tools for performing this test in almost any kitchen goods store: all-metal ladle with side-lip (for pouring the oil) large aluminum-foil roasting pan (to contain the poured oil) I found that the standard kitchen ladle was not configured for this test, so I chose an all-metal ladle so I could bend the handle to better suit a controlled pour. The height of the ladle above the holes under test must be controlled to 100 mm. The height is critical to pass/fail. I found that I could better control this parameter by using a rest for the ladle handle adjusted for 100 mm above the holes. The rate of pour is also critical to pass/fail. You should practice the pour several times. I found a big help if someone counted the seconds aloud for me as I poured. (You can't watch a clock and watch the pour at the same time!) The cheesecloth must be located 50 mm below the openings under test. I found that it was best to suspend or support the cheesecloth above the bottom of the pan so as to prevent saturation with the oil collecting in the bottom of the pan. I also used a dam of plumber's putty on the test panel to prevent the oil from spilling over the edge of the test panel. This helps control spilling the oil outside the roasting pan. The test panel needs to be independently supported and level so as to allow the oil to collect over the holes. Note that you are dealing with 3 parameters: hole diameter hole-to-hole spacing metal thickness All of these are critical to pass/fail. As near as I can tell, the process of passing the test is that of cooling the flaming oil by the heat-sinking action of the metal, and by quenching the flame as the oil passes through the hole (i.e., the oil fills the hole such that no oxygen can pass through the hole with the oil and sustain the burning as the oil emerges from the bottom of the metal). Note that you get to repeat the test for a total of 3 successes in succession. Due to the variablility of the test, if you get some passes and some fails, keep testing until you get 3 passes in succession! You'll find that passing is a matter of controlling the test parameters, especially the location above the holes, the rate of pour, and the pour height. Be sure to perform the test in a suitable area such as a fume hood. Also, be prepared to deal with spilled oil, and with spilled burning oil. Have someone standing by with a fire extinguisher at the ready. In the event of a failure, you'll need it to extinguish the oil in the pan (otherwise, it will burn for a long time!). By the way, the hole patterns (Table 15) specified as acceptable in the standard do not necessarily pass the test! Good luck! Let us know how you do! Best regards, Rich ps: Note that the oil will not ignite at room temperature. You can dunk a match in the oil, and the match will be extinguished. You do need to heat the oil slightly before it will burn. Don't heat the oil too much -- just enough to ignite it. Then, you let it burn for 1 minute before the pour; this is all the heat you want for the oil. Any more, and you'll tend to fail the test. Be sure to extinguish the flame you use to heat the oil BEFORE you proceed with the test. Disclaimer: The hot-flaming-oil test is a dangerous test. The preceding comments, observations, and opinions are not complete, are not necessarily accurate, may be ambiguous, and must not be relied upon for the safety of persons conducting such a test or for the accuracy of the test results. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad
Re: Hot Flaming Oil Test
Hi Ken: The standards specify the oil as being: distillate fuel oil which is a medium volitile distillate having a mass per unit volume between 0.845 g/ml and 0.865 g/ml, a flash point between 43.5C and 93.5C and an average calorific value of 38MJ/l. I've found that this is equivalent to ordinary diesel fuel or #2 fuel (heating) oil. I've bought The tools for performing this test in almost any kitchen goods store: all-metal ladle with side-lip (for pouring the oil) large aluminum-foil roasting pan (to contain the poured oil) I found that the standard kitchen ladle was not configured for this test, so I chose an all-metal ladle so I could bend the handle to better suit a controlled pour. The height of the ladle above the holes under test must be controlled to 100 mm. The height is critical to pass/fail. I found that I could better control this parameter by using a rest for the ladle handle adjusted for 100 mm above the holes. The rate of pour is also critical to pass/fail. You should practice the pour several times. I found a big help if someone counted the seconds aloud for me as I poured. (You can't watch a clock and watch the pour at the same time!) The cheesecloth must be located 50 mm below the openings under test. I found that it was best to suspend or support the cheesecloth above the bottom of the pan so as to prevent saturation with the oil collecting in the bottom of the pan. I also used a dam of plumber's putty on the test panel to prevent the oil from spilling over the edge of the test panel. This helps control spilling the oil outside the roasting pan. The test panel needs to be independently supported and level so as to allow the oil to collect over the holes. Note that you are dealing with 3 parameters: hole diameter hole-to-hole spacing metal thickness All of these are critical to pass/fail. As near as I can tell, the process of passing the test is that of cooling the flaming oil by the heat-sinking action of the metal, and by quenching the flame as the oil passes through the hole (i.e., the oil fills the hole such that no oxygen can pass through the hole with the oil and sustain the burning as the oil emerges from the bottom of the metal). Note that you get to repeat the test for a total of 3 successes in succession. Due to the variablility of the test, if you get some passes and some fails, keep testing until you get 3 passes in succession! You'll find that passing is a matter of controlling the test parameters, especially the location above the holes, the rate of pour, and the pour height. Be sure to perform the test in a suitable area such as a fume hood. Also, be prepared to deal with spilled oil, and with spilled burning oil. Have someone standing by with a fire extinguisher at the ready. In the event of a failure, you'll need it to extinguish the oil in the pan (otherwise, it will burn for a long time!). By the way, the hole patterns (Table 15) specified as acceptable in the standard do not necessarily pass the test! Good luck! Let us know how you do! Best regards, Rich ps: Note that the oil will not ignite at room temperature. You can dunk a match in the oil, and the match will be extinguished. You do need to heat the oil slightly before it will burn. Don't heat the oil too much -- just enough to ignite it. Then, you let it burn for 1 minute before the pour; this is all the heat you want for the oil. Any more, and you'll tend to fail the test. Be sure to extinguish the flame you use to heat the oil BEFORE you proceed with the test. Disclaimer: The hot-flaming-oil test is a dangerous test. The preceding comments, observations, and opinions are not complete, are not necessarily accurate, may be ambiguous, and must not be relied upon for the safety of persons conducting such a test or for the accuracy of the test results. --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
