Fluid Power Journal

Hydraulics and the Environment

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Component failure is often the root cause of hydraulic spills to the environment. In this article, we won’t discuss environmentally friendly fluids, but instead lean more toward the effects of failure and prevention.

Spill control methods for hydraulic failure are containment, adsorbents, and establishing protocols. Stepping back to the root cause is where we should focus in an effort to prevent failure and the use of these post controls. Hydraulic component failure is inevitable if you let it happen, however, it is also preventable. A hydraulic component will never get more reliable after its first use; in fact, the moment it is put to use, its life expectancy declines. There is a whole profession and organization that focuses on component and machine reliability, and these reliability experts convey that knowledge and comprehensive maintenance procedures will reduce failures by 90%. Every minute in North America, a hydraulic hose will fail, expelling hydraulic fluid to the surrounding environment. Even if the lost fluid is contained and the area is remediated, the lost fluid should never be returned to the system due to contamination.

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This lost fluid, however, can be recycled, but in most cases, the fluid and adsorbents end up in landfill sites for natural breakdown. There is really no upside to component failure and release to the environment. HSAC recently released a safety poster titled “Near Miss,” which simply states: “If an injury did not result…it’s a reportable near miss.” The image on the poster is a failed hose assembly. We believe recording hydraulic hose failures in the near-miss category will eventually bring this phenomenon real serious attention, as it should! Hydraulic component manufacturers are very good at explaining reliability and the requirements of maintaining a failure-free system.

These pointers from manufacturers become industry best practices, which we hope will eventually be adapted into a standard. For more information on containment, adsorbents, biodegradable fluid, spills reporting, and effects on the environment, contact info@hsac.ca.

Question: I work in a mine running a piece of equipment with many hydraulic hoses in a “track” system. The hoses in the “track” and elsewhere show damage to the outer covers, and the braided reinforcement wire is exposed and, in many cases, badly corroded. Could you please help me maintain safety in my workplace by providing your input into this situation?

Answer: When the outer shell of a hydraulic hose has been damaged or has begun to break down, exposing the wire reinforcement, the steel wire immediately begins to corrode. The inner layer of rubber has no strength without sound wire reinforcement. Any hoses that are damaged should be replaced.

There is no act or standard that states you must replace the hose, however, legal repercussions can result in the event of a failure causing injury or death, including property and environmental damage. Liability may fall on the persons, supervisor, and company responsible for using components that are visibly damaged where the manufacturer and industry best practices state that they are not safe. A “fraying” hose is not safe and can fail at any time. The overall costs are much higher when failure occurs.

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* The above articles have been reprinted with permission. Images courtesy of Hydraulic Safety Authority of Canada, Inc.

For more information

The mission of Hydraulic Safety Authority of Canada Inc. (HSAC) is to provide proactive health and safety awareness programs specific to hydraulic systems and components. These programs provide a guideline for companies to follow as they show the necessary due diligence required for providing a safe work environment and improving their existing health and safety systems. Contact by phone: 416-363-7272; e-mail: info@hsac.ca; web: www.hsac.ca. The IFPS is now an authorized provider of HSAC’s Hydraulic Safety Awareness e-learning courses.

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2 Comments

  1. Jimmy Chow09/18/2014 at 8:38 amReply

    I handle used machinery. I experienced a lot of hydraulic failures in this industry. In many instances, boxes only interested to do breakdown repairs. Everybody wanted to save cost. I agree it is penny wise pound foolish situation and also shortage of hands on hydraulic workers because it is dirty, tough & dangerous work.

  2. Suresh Patel09/18/2014 at 8:42 amReply

    very useful article. apart from visual hose damage, the crimping process and the dimensional and metallurgical properties of the fittings contribute to fluid spillage and associated safety issues.

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