Do you know about the "FM Global Property Loss Prevention Data Sheet 7-76"?

OSHA has many standards regarding combustible dust and many refer to other standards and documents by outside groups or organizations. One such document is the "FM Global Property Loss Prevention Data Sheet 7-76". This document addresses the prevention and mitigation of combustible dust explosion and fire. It is also a property loss and prevention data sheet. FM Global provides comprehensive global commercial and industrial property insurance, engineering-driven underwriting and risk management solutions, property loss prevention research and , claims handling.

With a wide variety of safety requirements the FM Global Property Loss Prevention Data Sheet 7-76 covers such things as building explosion hazards, dust collectors, ducting,silos,

and many other items regarding dust explosion and fire. The detail of specific recommendations makes the document a useful resource for the prevention of dust explosions. One specific issue is fugitive dust in a room or building. The dust must have a enclosure separate from the surrounding building. Explosion resistant materials must be used and no open holes or openings in which a fire or explosion could pass through. All explosion venting devices must be inspected periodically to prevent impairment. Such possible impairments as corrosion, improper painted movable parts, icing, snow, obstruction, and equipment that is located near the venting device.

To view the complete document FM Global Property Loss Prevention Data Sheet 7-76.

FM Global website.

OSHA website.

Research actual equipment and venting devises for combustible dust and air pollution control.

Preliminary First Draft of the Proposed 2015 Edition of NFPA 652 Standard

The National Fire Protection Association (NFPA) has released the Preliminary First Draft of the proposed 2015 edition of NFPA 652. The standard will provide the basic principles of and requirements for identifying and managing fire and explosion hazards of combustible dusts and particulate solids. The standard will provide the user with general requirements and direct the user to the appropriate industry or commodity-specific NFPA standard for additional requirements.

The document establishes the basic principles and requirements that shall be applied to all facilities where combustible dusts or particulate solids are present. Where an industry or or commodity specific NFPA standard exists, its requirements shall be applied in addition to those in this standard. The proposed 2015 edition of NFPA 652 is very detailed in explaining specific definitions of all items contained in the document and applications where the standard will be applied.

You can read the entire document and learn even more at the links below.

Proposed 2015 Edition of NFPA Standard 652

National Fire Protection Association

Industrial Dust Collectors and Fume Collection Equipment

OSHA Firefighting Precautions at Facilities with Combustible Dust

Often the first responders are at an immediate disadvantage upon arriving at a combustible dust explosion and/or fire.  This week OSHA released a booklet outlining safety procedures for emergency responders who may experience fires and explosions caused by combustible dust.

"The primary purpose of this document is to protect emergency responders from harm by giving them a framework for gathering the necessary information prior to an emergency and converting it into safe operating procedures.  In this document, emergency responders include firefighters, fire brigade members, hazardous materials teams, and others who might be called upon to respond when a fire or explosion occurs."states the OSHA booklet.

The booklet explains combustible dust explosions and how they occur.  Preparation that can be made before a response and precautions that can be made during an emergency response are detailed.  Another concern for first responders is the proper use of fire extinguishers, hose stream, equipment compatibility, and ventilation that are used.  The OSHA document details combustible dust and the reactions of usual fire fighting chemicals.  In some incidents the combination of explosive dust and water can escalate the incident resulting in injury or death.

Ventilation is a widely used practice by firefighters to remove heat and smoke, but can have catastrophic consequences when combustible dust is involved.  Actions such as appropriate power shutdown, safety procedures and normally used tools that can ignite combustible sources are addressed.

With more than 130 workers killed and 780 injured in combustible dust explosions since 1980, the booklet should immediately impact the safety concerns of emergency responders, workers and employers.

Links:
To download the complete booklet:  "OSHA Firefighting Precautions at Facilities with Combustible Dust".
To learn more about "Combustible Dust Collection"
Website: Occupational Safety and Health Administration

News Article: Charges Considered In Grain Elevator Blast

It seems that we are seeing and reading about combustible dust explosions weekly and even daily at times.  A recent article by Mike McGraw with the Kansas City Star revisited the deadly Bartlett Grain Elevator explosion of 2011 that killed four workers and two inspectors at the Atchison facility.    Federal prosecutors are now considering criminal charges against the grain operation owners.

This does not guarantee that criminal case will be filed.  Criminal charges in most workplace deaths are rare.   Many safety advocates contend that charges may avoid future deaths.  William Kauffman, a retired University of Michigan professor and aerospace engineer who has investigated grain elevator explosions for OSHA states “Criminal charges in these cases do change behavior.”  

Although Kansas is one of the leading states in grain elevator deaths, federal officials are not aware of such charges being brought before.  A statement released by the company reads  “Bartlett Grain has done everything in its power to learn the truth about this accident and we look forward to proving that the OSHA allegations are untrue and unfounded.”  According to research at Kansas State University, Kansas ranks third in the nation in grain dust explosions, with 64 since 1958.  Grain dust can be six times as explosive as black powder, often being ignited by overheated motors, misaligned conveyor belts, sparks or overheated bearings.   In 1987 OSHA revamped its regulations by reducing the amount of explosive grain dust in the elevators and by eliminating ignition points.  

OSHA can refer a matter to the local U.S. attorney for criminal prosecution, but the final decision to prosecute is up to U.S. attorney.  If federal prosecutors decide to take a criminal case and prove an employer “willfully” violated a safety standard that resulted in a worker’s death, the company can be fined up to $500,000.  The top company officials can also be sentenced up to six months in prison as a federal misdemeanor.

For more information click the links below.

To read the full article with video "Charges Considered In Grain Elevator Blast" 
Combustible dust testing information "Understanding Your Dust" 
OSHA "Prevention of Future Elevator Explosions"

Article: From Dust To Death - Six tips to stop dust collector explosions

Preventing combustible dust explosions has been an industry concern for years.   Increasing the stress for emergency health and safety managers trying to find the correct solution and maintain that solution for the future as well.  With so many standards, regulations, and codes one can get easily overwhelmed.  A recent article in ISHN Magazine by industry experts Tony Supine and Mike Walters condense the tedious task into a few informative tips.   

Reviewing the NFPA 654 standard will give you information on how to design a safe dust collection system.  It will also guide you to other NFPA standards regarding deflagration venting, explosion protection where venting is not possible, as well as standards for specific types of combustible dust and industries.   The NFPA has incorporated performance-based options, since 1995 using calculations in its standards for explosion protection equipment.   Since 2006 the NFPA has been allowing real world destructive test data to be used in place of the calculations data, as long as adequate testing has been proven.   Although often overlooked, real world data is permissible and your dust collection supplier may help you with cost savings and from over engineering,  all while not compromising safety.  

A hazard analysis is required to determine the level of fire and explosion protection required.  Testing the dust to determine the KST rating and Pmax by ASTM E 1226-10 standard needs to be established.  Quality is often overruled by a low price.   Is the value what it seems?  As documented a low-end dust collector will most likely need replacing after an explosion, where as a high quality gauge collector often only requires replacing only the explosion vent and filter cartridges.   High quality compliant equipment is reassurance and an investment in the future.   Keeping a clean facility is another key element in preventing dust explosions.  Hazardous levels of dust accumulation are the most common of all OSHA violations, often ending with fines.  The NFPA definition of hazardous surface dust is now 1/64 inch or 0.4mm in depth.   Staying alert of any changing conditions that can contribute to potential explosive problems should be normal practice.

You can read the full article here From Dust To Death - Six tips to stop dust collector explosions.

Video - Inferno: Dust Explosion at Imperial Sugar

This month is the four year anniversary of the deadly combustible dust explosion at Imperial Sugar Refinery in Georgia. We wanted to depart from our dust collection series this week to remember the 14 employees that were fatally burned. This explosion was preventable and sadly there have been many more deadly combustible dust explosions elsewhere since.

This video is part of a safety video series put out by the CSB (U.S. Chemical and Safety Board). The video report contains footage, animations, and interviews surrounding that investigation and details of how the explosions happened.

OSHA Bulletin - Combustible Dust in Industry: Preventing and Mitigating the Effects of Fire and Explosions

Recently the US Chemical Safety Board has called on the Occupational Health and Safety Administration to develop and publish a combustible dust standard that includes coverage for metal dusts by the end of 2012. As of today no such standard exists. OSHA Bulletin labeled "Combustible Dust in Industry: Preventing and Mitigating the Effects of Fire and Explosions" is not a standard or regulation. The purpose of the bulletin is to highlight the hazards associated with combustible dust. Work practices and guidelines that reduce the potential for a combustible dust explosion, or that reduce the danger to employees if such an explosion occurs, and training to protect employees from such hazards.

The bulletin covers accidents that occurred, elements needed for a combustible dust explosion, how to access for combustible dust, dust control, and education of management and employees. It's important to know what OSHA has in place currently and hopefully this will help prevent combustable dust incidents until the standards are released.

You can view the CSB video titled, Combustible Dust: An Insidious Hazard, at http://www.farrapc.com/comply/.

Free NFPA Webinar on Dust Explosion Hazards 8/23/11

The NFPA (National Fire Protection Association) is offering a FREE 90-minute Webinar, “Identify and Prevent Dust Explosion Hazards”, on 8/23/11. Synopsis:

"Combustible dusts pose a significant fire and explosion hazard for any industry that manufactures, handles, stores, or recycles solid materials.During this webinar, NFPA's Guy Colonna will discuss NFPA 654, Standard for the Prevention of Fire and Dust Explosions from the Manufacturing, Processing, and Handling of Combustible Particulate Solids, and related standards to identify dust explosion hazards and review safety practices so you can recognize the potential for a dust hazard condition and outline the various controls."

If you are considering the purchase of a dust collection system for your factory, this is an excellent opportunity to learn. Register at https://www2.gotomeeting.com/register/455405003.

In The News: Imperial Sugar Reopens GA Refinery

Factory dust explosions are real. On February 7, 2008, a massive explosion killed 14 workers and injured dozens more at Imperial Sugar's Georgia refinery plant when accumulated sugar dust ignited like gun powder. Sixteen months later, Imperial has rebuilt their plant and just reopened.

Dust explosions and fires in factories occur frequently, though you don't often hear about them. (try this: Google "factory dust explosion"). The more catastrophic ones like at Imperial make national headlines. Don't minimize or dismiss this risk factor. If you are considering the purchase of an industrial dust collector from any manufacturer, please have your dust tested and your application carefully reviewed. Don't rush just to get any dust collection system installed to get OSHA off your back. You likely already have some idea if you have combustible dust. Do some homework. Please prevent another tragedy.