Turn to the nation's most objective and informative daily environmental news resource to learn how the United States and key players around the world are responding to the environmental...
May 19 — Initial government field studies on hydraulic fracturing operations suggest that workers could be exposed to hazardous levels of volatile hydrocarbons from used fracking fluids, the National Institute for Occupational Safety and Health said May 19.
At least four workers have died since 2010, apparently from acute chemical exposures during flowback operations, which involve transferring, storing and measuring fluids that return to the surface after fracking, NIOSH said in a blog post.
The institute assessed worker exposure to other chemicals mixed into fluids that are injected into the earth during fracking, said Max Kiefer, director of NIOSH Western States Office. Those findings will be detailed in later publications, including a peer-reviewed case study this summer, Kiefer said.
“But right now, the exposures of concern from a worker standpoint are from endogenous hydrocarbons that can be emitted from returned flowback fluids, not from other chemicals,” Kiefer told Bloomberg BNA May 19.
NIOSH highlighted how little is known about the potential health hazards associated with fracking, such as chemical exposure, in contrast to the well-developed knowledge about safety hazards from accidents common to oil and gas extraction.
Fracking operators mix silica sand and chemicals into water, which is injected underground to fracture shale formations. The liquid mix is removed and the sand remains in the broken shale, acting as a “proppant” to keep the fractures open and allow oil or natural gas to flow. The liquid that flows back can contain volatile hydrocarbons picked up from the shale formations, NIOSH found.
The institute has studied the health hazards of silica exposure at fracking well pads, but its research thus far into flowback operations is far less comprehensive, Kiefer said. Researchers would like to look at different types of shale formations, climactic conditions, factors that led to exposure and other variables, he said.
NIOSH asked oil and gas companies and other stakeholders to help further characterize risks associated with flowback operations, as well as to assist with developing and implementing exposure controls as necessary.
Kiefer said reports from media sources and the Occupational Safety and Health Administration about fatalities triggered the research into flowback operations. Some of the fatality investigations are incomplete, but thus far the workers likely were gauging flowback or production tanks, or transferring flowback fluids, NIOSH said in the blog post. The workers, who were located at well sites in the Williston Basin in North Dakota and Montana, often died when working alone.
Dan Neal, director of Equality State Policy Center in Wyoming, said health hazards pose a particular risk to fracking workers—known as roughnecks—because the work is temporary, and the worksites are transient.
A roughneck could get sick after work with a company has finished, plus it could be difficult to establish a causal connection between exposure at a particular site and an illness, Neal said. These factors could conspire to make worker compensation impossible to obtain, he said.
“Roughnecks are sort of your ultimate temp worker,” Neal told Bloomberg BNA May 19. “Fracking doesn't fit the traditional employment model, which is what safety and health regulations are built around.”
Moreover, Neal questioned whether health hazards from chemical exposure is something the industry has examined.
Safety and health is important to oil and gas companies, said Shawn Bennett, a spokesman for Energy in Depth, a research and advocacy organization launched by Independent Petroleum Association of America.
Many oil and gas operators and contractors are involved with OSHA in the National Service, Transmission, Exploration and Production Safety Network, which looks for opportunities to improve environmental, safety and health issues, Bennett told Bloomberg BNA May 19.
To contact the reporter on this story: Robert Iafolla in Washington at firstname.lastname@example.org
To contact the editor responsible for this story: Jim Stimson at email@example.com
The NIOSH blog post on flowback operations is available at http://blogs.cdc.gov/niosh-science-blog/2014/05/19/flowback/.
All Bloomberg BNA treatises are available on standing order, which ensures you will always receive the most current edition of the book or supplement of the title you have ordered from Bloomberg BNA’s book division. As soon as a new supplement or edition is published (usually annually) for a title you’ve previously purchased and requested to be placed on standing order, we’ll ship it to you to review for 30 days without any obligation. During this period, you can either (a) honor the invoice and receive a 5% discount (in addition to any other discounts you may qualify for) off the then-current price of the update, plus shipping and handling or (b) return the book(s), in which case, your invoice will be cancelled upon receipt of the book(s). Call us for a prepaid UPS label for your return. It’s as simple and easy as that. Most importantly, standing orders mean you will never have to worry about the timeliness of the information you’re relying on. And, you may discontinue standing orders at any time by contacting us at 1.800.960.1220 or by sending an email to firstname.lastname@example.org.
Put me on standing order at a 5% discount off list price of all future updates, in addition to any other discounts I may quality for. (Returnable within 30 days.)
Notify me when updates are available (No standing order will be created).
This Bloomberg BNA report is available on standing order, which ensures you will all receive the latest edition. This report is updated annually and we will send you the latest edition once it has been published. By signing up for standing order you will never have to worry about the timeliness of the information you need. And, you may discontinue standing orders at any time by contacting us at 1.800.372.1033, option 5, or by sending us an email to email@example.com.
Put me on standing order
Notify me when new releases are available (no standing order will be created)