Archive for the ‘Safety’ Category

Flashpoint of corrugated

November 16, 2012

Curtis asks:

I have a quick question. What is the flashpoint of corrugated board? Are there industry articles on this?

Ray Bradbury forever ingrained this piece of data in the minds of millions in his novel Fahrenheit 451.

Under normal conditions it should be 451 degrees Fahrenheit. However… If the board has been treated with some type of fire-retardant coating, or a coating that has an ignition point lower than 451 degrees, then the flash, or ignition, point of the product could possibly be affected.

You may also want to read the discussions on this blog about combustible dust as well. Paper in dust form highly combustible and brings a new set of potentially explosive variables into play.

Food Grade Pallets

September 18, 2012

Ted asks;

Where can I get info on food grade pallets? I understand there are different standards of Food Grade pallets.

I had never heard of ‘Food Grade Pallets’ so I had to do a little research on this one. While one might think that food grade pallets would be regulated by the FDA, it appears that it is a specification set by the GMA (Grocery Manufacturers Association). GL Pallets and Ox Box in Chicagoland might be able to offer some more information.

You can also visit the GMA website (www.gmaonline.org) . You may be able to find additional information there.
-Ralph

Auto Ignition Point (Temperature) of Corrugated

February 9, 2012

Sam asks;

We have a customer that is asking us to confirm the auto ignition point (temperature) of corrugated. Dan you tell me what it is or where I can find some information about it? Is it 451 degrees Fahrenheit?

You are correct Sam, the auto ignition point for corrugated is 450-451 degrees Fahrenheit.

Here are several references for your client:

http://en.wikipedia.org/wiki/Autoignition_temperature

http://en.wikipedia.org/wiki/Talk%3AAutoignition_temperature

http://chemistry.about.com/od/chemistryglossary/g/Autoignition-Temperature-Definition.htm

As a side topic, paper dust shares the same 451 degree auto ignition point. So, if a sheet of corrugated and a layer of paper dust were both exposed to an indirect heat source, such as an oven, they would both ignite at the same temperature.

However… If a direct heat source such as a spark or flame is applied, the much higher oxidation rate of the dust will cause rapid ignition with potentially explosive results.

-Ralph

Combustible Dust

January 4, 2012

The last time we published an update on this issue was December 2009. It has been relatively quiet since then, but OSHA will be coming out with new standards based on the National Fire Prevention Association Standard 654 (last revision 2006) now that they have concluded their rounds of industry stakeholder input. Two years ago the conversation that we picked up was that the regulation would be focused on milling, metal processing and coal based electrical utilities. Unless a member or a supplier can give us a more definitive update for the corrugated or solid fibre industries, it is still our understanding that good housekeeping and the use of vacuums with negative air flow and not positive air systems with blow off stations, can make a positive impact on an OSHA inspector. No more than 1/32 inch of dust may accumulate at any place in the plant. This information is included in the Federal Register and falls under 29 CFR part 1910.