How to use H2S Monitor at work site

I have seen them on pant pockets,  to hard hat, the proper location of a H2S Monitor for heaven’s sake is in the breath zone! AND ON THE VERY OUTSIDE OF YOUR CLOTHES!

Equipping workers with personal gas detectors is similar to equipping cars with seatbelts: they can only protect workers if they are used properly and consistently. A recent toxic gas fatality in Canada illustrates that buying gas detectors for workers does not automatically ensure worker safety. In order to protect workers, the instruments have to be used correctly. A critical part of safety programs that include use of gas detectors are the procedures used to verify that the instruments are being used properly. Failure to surveil and enforce proper use of gas detectors that had been issued to workers was one of the root causes of the Canadian accident. The accident occurred at an oil-drilling site characterized by the potential presence of hydrogen sulfide. 

Hydrogen Sulfide (HS) - A flammable, toxic, colorless and corrosive sulfur based gas recognizable by its rotten egg odor. Detection by odor is unreliable since it rapidly deadens the sense of smell.  Recognized exposure limits are:
 OSHA Acceptable Ceiling Concentration: 20 ppm

 Threshold Limit Value (TLV): 10 ppm
 Short Term Exposure Limit (STEL): 15 ppm

Hydrogen sulfide (H2S) is a colorless gas that at low concentrations famously has an odor similar to rotten eggs. At higher concentrations, H2S rapidly deadens the sense of smell. For most persons, a concentration of 150 PPM is enough to immediately deaden the sense of smell. At air concentrations of about 750 PPM, inhalation of hydrogen sulfide gas can cause immediate collapse and unconsciousness. If exposure is very brief, for example, transitory envelopment by a passing gas cloud, the victim may awaken promptly and experience no adverse effects at all. In industries where hydrogen sulfide exposure is commonplace, for example oil field work, employees often refer to this phenomenon as “knockdown”. A single breath at a concentration of 1,000 PPM results in immediate loss of consciousness, followed by cardiac arrest and death unless the unconscious individual is successfully revived. Because of the poor warning properties, extreme toxicity, and pervasiveness of this hazard, at many oil production sites and refineries every worker is required to wear a personal gas detector for H2S at all times while they are on site. Wearing an H2S “Clip” or “Badge” at these facilities is as routine as wearing a hardhat and eye protection. 

Personal Hydrogen Sulfide (HS) Monitor -

 A sensor worn within 18 inches of the nose on the outside of the clothing equipped with a visual read out and audible and vibration alarms that continuously measures HS levels in the air space around the wearer.  The initial alarm of these monitors is activated at 10 ppm and a second alarm activated at 15 ppm. OSHA  defines the breathing zone as the area “within a 10-inch radius of the worker’s nose and mouth.”   That would indicate that an instrument used primarily for personal protection from toxic hazards such as H2S should be worn on the collar, the lapel, on a breast pocket or even on the brim of a hard hat – or simply within a 10-inch radius of your nose and mouth.

Some would suggest that because gases like H2S are heavier than air that the instrument used to protect against them should be worn  lower on the body, around the knees or attached to the top of the boot.  While there may be some validity to this argument, I believe that this puts the instrument itself in danger of being damaged in the working environment or even lost without notice and may make it more difficult to recognize that the instrument is alarming in high noise areas.   

Power Tools safety Topic

Because of the diversity of hand tools and the situations in which they are used, supervisors often fail to train employees on their safety, maintenance, and replacement. Because of multiple worksites and various employees using the same tools, it’s important to pay special attention to accountability for tools. Unfortunately, this type of neglect will lead to higher accident rates, loss of production, lower quality of production, and higher business costs. The essential elements of a good hand tool safety program are:
Image result for power tools
  1. Using the appropriate tool for its intended use
  2. Keeping the tool in good working condition
  3. Using the tool correctly
  4. Storing the tool properly
In addition to having hand tools in excellent condition and using them for the correct purpose, your employees must also be taught to use them correctly. Be sure they use the proper personal protective equipment for the job and the tools being used.
And Safe storage and handling of tools checklist
  • Has the person who is going to be using the tools been authorized to do so, and have they checked out the tools?
  • Are sheaths or guards available for sharp-edged or pointed tools such as knives and axes?
  • Is a tool crib or box available when delivering tools to an outside worksite?
  • Are tools separated from the passenger compartment when being transported?
  • Are tools checked in and put back in their appropriate place after use? (Some shops have an outline of a tool to easily identify missing items.)
  • Are all tools accounted for and checked for defects prior to the end of each workday/workweek?

Important Definition for tools safety at worksite

The bottom of a tool such as a circular saw that must be guarded except for when the tool is in use.
A sharp metal tool that is used to cut or chip workpiece materials. Chisels must remain clean and sharp.
A material that is very effective at conducting electricity. When using electric tools, do not wear or stand on objects that are conductors.
Full-ear coverings connected by a headband that require a perfect seal around the ear. Hair, facial hair, or facial movements may disrupt this seal.
Ear wear that protects hearing. Earplugs are inserted inside the ear to muffle outside noises.
The flow of electricity through the body. Severe electric shock can be fatal.
A power tool that is powered by electricity. Electric tools require observing electric safety guidelines.
The study of designing devices to decrease operator discomfort or fatigue and increase productivity.
A designated station in an easily accessible area in which employees may flush their faces with water in the event of an emergency.
A rigid, transparent plastic sheet that covers the worker's entire face to protect against dust or splashes. Because face shields do not protect against impacts, they are often worn with goggles.
A portable device that uses a rapid spray of chemicals to put out small fires.
A flame-resistant, tarp-like device that is used to isolate a work area and protect bystanders and nearby equipment from applications that throw sparks.
An object that can quickly catch fire if it comes in contact with sparks or fire.
A flat or raised metal disk that helps deflect mounting stresses from the hole in a grinding wheel.
A tool that is powered by fuel, usually gasoline. Fuel-powered tools require proper ventilation.
A cloud of particles suspended in a gas. Applications that emit fumes require proper ventilation.
Portable ground fault circuit interrupters. A type of switch that is disabled if the electricity should come into contact with water. GFCIs should be used whenever there is a chance for electricity to come into contact with water.
Safely connected to a neutral body, like the earth, which can absorb a stray electrical charge. Electric tools must be grounded to help prevent electric shock.
A tool that is "powered" by an operator, such as a hammer or screwdriver. Hand tools must be kept clean and sharp in order to avoid injury.
A designated station in an easily accessible area in which employees may wash their hands.
A lightweight, protective head covering, usually made of plastic, used to protect the head from impacts, bumps, and electrical shock.
A tool that is powered by a liquid. Hydraulic tools must be used within their proper specifications.
A powerful pneumatic tool that is used to chisel or hammer away at surfaces. Because of their vibrating motion, jackhammers require special safety considerations.
A safety procedure required by OSHA that takes steps to dissipate all stored energy during maintenance work. Never try to operate a machine that is under lockout.
The device on which an abrasive wheel rests. The abrasive wheel must be able to move freely without obstruction on the mounting.
A condition that occurs commonly to chipping tools where the head of the tool is flared out due to excessive use. Using tools with mushroomed heads is dangerous because pieces can fly off and hit the employee or other bystanders.
A safety guard that protects employees from coming into contact with dangerous parts of the tool. For example, a muzzle covers a nailgun until it is pressed against a workpiece.
A component, usually made of metal, with a threaded hole that mates with a bolt. Using the proper tool for tightening nuts is an important safety precaution.
Any example of various safety equipment that workers wear or use to prevent injury in the workplace. Safety glasses are common personal protective equipment.
Any place where two components meet that can cause an injury if you come into contact with the area.
A tool that is powered by compressed air.
The area where the tool comes into contact with the workpiece. Employees must never place anything in the path of the point of operation.
Sitting or standing in a proper upright position. Many ergonomic injuries are avoided by assuming proper posture.
A tool that is powered by gunpowder. Because they require special safety considerations, only approved personnel may use powder tools.
A tool that is powered by an external source, such as electricity or compressed air. Power tools must receive regular maintenance and be properly handled to avoid injury.
A breathing device worn to prevent inhalation of hazardous substances.
To rebound from a surface. Employees must make provisions to ensure that fasteners can not ricochet off a surface.
Another term used to describe a sound test for grinding wheels.
A protective screen that isolates a work area to protect bystanders and nearby equipment. Safety screens are similar to fire shields.
A raised platform on which employees can work at elevated heights.
A type of hand tool that tightens and loosens screws. Screwdrivers contain a grip on one end and a blade on the other end that corresponds to the head on the screw.
A safety device used on power tools. Sensor switches can have different designs, but the most common type allows the tool to operate while pressure is applied and does not allow the tool to operate when pressure is released.
Another term used to describe the base plate of a tool.
A test performed on an abrasive wheel to ensure that it is not cracked. If the wheel "rings" when a non-metallic object is lightly tapped on it, then it is not cracked.
The component of a tool that spins. For safety, spindles must be properly tightened and able to move freely without obstruction.
The visible labeling of a machine or equipment indicating that it is locked out and should not be used by unauthorized workers.
A designated area where extra tools and accessories are kept. The tool crib is also typically where tools can be serviced or repaired.
A safety device that grips a tool to ensure that it is properly attached to its power source.
Another term for the tool crib.
A means of providing fresh air.
A workholding device with two jaws that grip and hold a workpiece in place.
A type of hand tool that tightens and turns bolts and nuts. Wrenches contain fixed or moving jaws or a round attachment that grips the nuts or bolts.

Top Most