Hand-Arm Vibration Standards: ANSI S2.70 Standard
Reprinted by kind permission of Donald E. Wasserman, MSEE, MBA, Human Vibration Consultant, Cincinnati Ohio. An update to the "What You Don't Know" article below, Mr. Wasserman explains the history of HAVS standards, the relationship between ANSI S2.70-2006 and the EU Vibration Directive, and provides an overview of Hand-Arm Vibration measurement basics.
What You Don't Know About Occupational Vibration CAN Hurt You. . .
Prepared by the European Committee for Standardization "in response to the growing demand to protect people from the risks of vibration damage caused by exposure to hand-transmitted vibration." Our full-finger Gfôm gloves have been tested and approved to meet this standard.
Hand-Arm Vibration Syndrome (HAVS) - Poster
Plastics that won't be around forever.
A new process was developed in New Mexico that entices bacteria to snack on plastic. Scientists figured out how to modify plastics to retain the beneficial elements of plastic, but don’t allow them to hang around in landfills for thousands of years.
How it works:
With this new process, a tiny amount of bio-additive material is added to plastic during manufacturing, in the same way a color is added to create green or purple plastic. This additive's chemistry is designed to attract hungry microbes to plastic surfaces. It is such a small amount of food for such tiny diners that it doesn’t affect clarity or strength, which is why we can use this treated plastic to make clear safety glasses that pass the most current ANSI eyewear safety standards.
When the plastic item is thrown away into an appropriate landfill, bacteria sense the food in the plastic, and begin to congregate for a feast. (This won’t happen until the item is thrown away and buried, because the conditions outside of the landfill aren’t “feast-friendly.”) Bacteria gather on the plastic, and when enough of them gather, a process called “quorum sensing” takes place.
True practitioners of “the more, the merrier” philosophy, bacteria secrete a substance that works like a chemical cell phone. They call all their friends to come over for dinner.
The microbial crowd gathers and breaks down the structure of the plastic, degrading it into the final products of stable humus (which balances soil pH and helps keep soils aerated) and methane (in anaerobic) or carbon dioxide (aerobic conditions).
We’ve all heard a lot about increased amounts of methane gas harming the environment, but the methane produced as microbes degrade a product containing this additive is a normal byproduct of microbial metabolism. Just as you produce and exhale carbon dioxide (whether you’ve eaten an apple or a triple bacon cheeseburger), anaerobic bacteria will produce methane, whether they’ve degraded (digested) a banana peel or a pair of plastic safety glasses.
Don’t worry, unless you wear these safety glasses 10 feet underground, with your head stuck in the dirt, they won’t begin to disintegrate until they are buried in a landfill.
Support your local microbes. Without them, the Earth’s surface might be buried deep beneath leaves, grass clippings, and leftover tuna casserole.
Review of 2001 NIOSH Back Support Study:
The Effect of Wearing a Back Belt on Spine Kinematics During Asymmetric Lifting of Large and Small Boxes
Information on the 2001 NIOSH back support study by Division of Safety Research:
Physiological Effects of Wearing a Back Belt During Asymmetric Lifting
Body Movements and Events Contributing to Accidental and Non-Accidental Injuries
A Controlled Trial of an Educational Program to Prevent Low Back Injuries
Fatigue Identification from Low Back Surface EMG Signals Using Wavelets
Back Belts Pay Off for Nurses
As Published in Occupational Health & Safety January 1996
The Material Handling Solution to Back Injuries
As Published in Material Handling Engineering, February 1996
Blind About Back Belts?
As Published in Occupational Hazards, February 1996
The Effectiveness of Back Belts on Occupational Back Injuries and Worker Perception
As Published in Professional Safety, September 1995
Back Support Belts: Are They Material Handling Equipment?
As Published in Material Handling Equipment, September 1995
Employers Speak Out on Back Supports
Published in Industrial Safety & Hygiene News, November 1994
Overview of Recent Back Support Studies, 2nd edition
Published by Chase Ergonomics, Inc., 1996
How to Correctly Wear a Back Support - Poster