Guide to hand protection

Transcription

1 Guide to hand protection Protecting against substances in the workplace The most effective and reliable way to prevent skin problems is to design and operate processes to avoid contact with harmful substances. Protective gloves tend to be less effective than other control measures but if avoiding contact is impractical or is not enough to protect employees then gloves may be needed. When you select protective gloves, base your choice on the work, the wearer and the environment they work in. You need to consider the following five factors: Identify the substances handled. Identify all other hazards. Consider the type and duration of contact. Consider the user - size and comfort. Consider the task. Identify the substances handled Gloves differ in design, material and thickness. No glove material will protect against all substances and no gloves will protect against a specific substance forever. Water/ wet work Prolonged or frequent contact with water, particularly in combination with soaps and detergents, can cause dermatitis. Wet work is the term used to describe tasks in the workplace that can cause this. To protect the hands from wet work choose a glove that meets the European Standard EN This shows that the gloves are waterproof. Substances in products, created by work processes and natural substances Substances in products. Some products contain substances that can harm the skin or enter the body through skin contact. The product label or material safety data sheet should tell you if this is the case. These may also give information on what protective gloves to use. If this is missing then try contacting the product supplier or manufacturer for help. Substances created by work processes and natural substances. Not all harmful substances come in labelled containers. Substances can be generated during work activities (eg wood dust from sanding, solder fumes). Remember that handling some natural substances like foods and flowers can cause skin problems too. If you are unsure if a substance produced by a work process or a natural substance you are handling is harmful, seek additional information, To protect hands from substances/chemicals choose a glove that meets the European Standard EN But make sure the glove material you choose protects against the substances being handled. Glove manufacturers usually produce charts to show how well their gloves perform against different substances. Manufacturers use three key terms, breakthrough time, permeation rate and degradation: - Breakthrough time is the time a chemical takes to permeate through the glove material and reach the inside. Permeation is a process by which a chemical can pass through a material without going through pinholes or pores or other visible openings. This tells you how long you can use a glove for. - The permeation rate is the amount that then permeates through. The higher the rate the more of the chemical will move through the glove. Choose a low rate. - Some chemicals can destroy the glove material. It may get harder, softer or may swell. Degradation indicates the deterioration of the glove material on contact with a specific chemical. Choose gloves with an excellent or good degradation rating. You can use manufacturers charts to identify the best gloves for the chemicals being handled or contact Anderco to help with this step. The performance of glove materials can vary slightly from manufacturer to manufacturer, so base your selection on the correct manufacturers data. Keep in mind that the manufacturers data is typically for pure chemicals, not mixtures. When you mix chemicals, their properties can change. As a rule of thumb, base your glove selection on the component in the mixture with the shortest breakthrough time. However, the only way to be absolutely sure that a glove performs well against the mixture is to have it tested. Some people develop an allergy to gloves made of natural rubber latex. Choose non-latex gloves unless there are no alternatives that give the protection needed. If you must use latex, choose low-protein, powder-free gloves. Identify all other hazards for hands Identify any other hazards present. For example, is there a risk of, abrasion, cuts, puncture or high temperature? There are chemical protective gloves that also give protection against mechanical hazards (those marked EN388) and thermal hazards (those marked EN407) Contact us today for all your health and safety needs...

2 Consider the type and duration of contact Will gloves be worn for a short time intermittently or for long periods? Comfort is more important for longer wear. Generally, thicker, robust gloves offer greater protection than thinner gloves but thinner gloves offer better dexterity. Will contact be from occasional splashes or by total immersion? Short gloves are fine to protect against splashes. If hands are immersed (and you can justify that this is unavoidable), choose a length greater than the depth of immersion. Consider the user - size and comfort Gloves should fit the wearer. Tight gloves can make hands feel tired and lose their grip. Too large gloves can create folds; these can impair work and be uncomfortable. It can help to use sizing charts. Comfortable gloves are more likely to be worn. Involve employees in the selection process and give them a reasonable choice to pick from. This can sometimes promote buy-in to wearing them. Hands can sweat inside gloves making them uncomfortable to wear. Getting staff to take glove breaks, removing gloves for a minute or so before hands get too hot and sweaty, can help air the hands. You could also consider supplying separate cotton gloves to wear under protective gloves. These can increase comfort by absorbing sweat. They can be laundered and reused. Consider the task Gloves should not hamper the task. If wet/oily objects are handled, choose gloves with a roughened/textured surface for good grip. Select gloves that balance protection with dexterity. Ensure the gloves selected meet any standards required for the task, eg sterile gloves, food grade gloves. Consider whether colour is important, eg to show up contamination. Once you have selected your gloves tell your employees how to use them properly to protect themselves. Tell them when they should be replaced, and if they are reusable gloves ask them to rinse them before removal (if practical) and tell them how they should be stored. Review their use periodically and get employee feedback, this can help check that the gloves are performing properly. The following are examples of some factors that may influence the selection of protective gloves for a workplace. Type of chemicals handled. Nature of contact (total immersion, splash, etc.). Duration of contact. Area requiring protection (hand only, forearm, arm). Grip requirements (dry, wet, oily). Thermal protection. Size and comfort. Abrasion/ requirements. Gloves made from a wide variety of materials are designed for many types of workplace hazards. In general, gloves fall into four groups: Gloves made of leather, canvas or metal mesh; Fabric and coated fabric gloves; Chemical, liquid and particle resistant gloves; Insulating gloves. Leather, Canvas or Metal Mesh Gloves Sturdy gloves made from metal mesh, leather or canvas provide protection against cuts and burns. Leather or canvas gloves also protect against sustained. Leather gloves protect against sparks, moderate, blows, chips and rough objects. Aluminized gloves provide reflective and insulating protection against and require an insert made of synthetic materials to protect against and cold. Aramid fibre gloves protect against and cold, are cut and abrasive resistant and wear well. Synthetic gloves of various materials offer protection against and cold, are cut and abrasive resistant and may withstand some diluted acids. These materials do not stand up against alkalis and solvents. Fabric and Coated Fabric Gloves Fabric and coated fabric gloves are made of cotton or other fabric to provide varying degrees of protection. Fabric gloves protect against dirt, slivers, chafing and abrasions. They do not provide sufficient protection for use with rough, sharp or heavy materials. Adding a plastic coating will strengthen some fabric gloves. Coated fabric gloves are normally made from cotton flannel with napping on one side. By coating the unnapped side with plastic, fabric gloves are transformed into general-purpose hand protection offering slip-resistant qualities. These gloves are used for tasks ranging from handling bricks and wire to chemical laboratory containers. When selecting gloves to protect against chemical exposure hazards, always check with the manufacturer or review the manufacturer s product literature to determine the gloves effectiveness against specific workplace chemicals and conditions. Chemical- and Liquid-Resistant Gloves Chemical-resistant gloves are made with different kinds of rubber: natural, butyl, neoprene, nitrile and fluorocarbon (viton); or various kinds of plastic: polyvinyl chloride Tel: Irl: UK: info@gsksafety.com Online:

3 (PVC), polyvinyl alcohol and polyethylene. These materials can be blended or laminated for better performance. As a general rule, the thicker the glove material, the greater the chemical but thick gloves may impair grip and dexterity, having a negative impact on safety. Some examples of chemical-resistant gloves include: Butyl gloves are made of a synthetic rubber and protect against a wide variety of chemicals, such as peroxide, rocket fuels, highly corrosive acids (nitric acid, sulfuric acid, hydrofluoric acid and red-fuming nitric acid), strong bases, alcohols, aldehydes, ketones, esters and nitrocompounds. Butyl gloves also resist oxidation, ozone corrosion and abrasion, and remain flexible at low temperatures. Butyl rubber does not perform well with aliphatic and aromatic hydrocarbons and halogenated solvents. Natural (latex) rubber gloves are comfortable to wear, which makes them a popular general-purpose glove. They feature outstanding tensile strength, elasticity and temperature. In addition to resisting abrasions caused by grinding and polishing, these gloves protect workers hands from most water solutions of acids, alkalis, salts and ketones. Latex gloves have caused allergic reactions in some individuals and may not be appropriate for all employees. Hypoallergenic gloves, glove liners and powderless gloves are possible alternatives for workers who are allergic to latex gloves. Neoprene gloves are made of synthetic rubber and offer good pliability, finger dexterity, high density and tear. They protect against hydraulic fluids, gasoline, alcohols, organic acids and alkalis. They generally have chemical and wear properties superior to those made of natural rubber. Nitrile gloves are made of a copolymer and provide protection from chlorinated solvents such as trichloroethylene and perchloroethylene. Although intended for jobs requiring dexterity and sensitivity, nitrile gloves stand up to heavy use even after prolonged exposure to substances that cause other gloves to deteriorate. They offer protection when working with oils, greases, acids, caustics and alcohols but are generally not recommended for use with strong oxidizing agents, aromatic solvents, ketones and acetates. Choosing gloves that conform to EN Standards Glove sizes in accordance with EN 420 A It is very important that the correct glove size is provided and worn and clear guidance is provided to ensure that sizing is right first time. Two measurements are required to establish the correct size - the hand diameter (A) and length (B = distance between wrist and tip of middle finger). B Measurements are given in mm. Glove sizes in accordance with EN Measurements in mm Glove length Hand diameter (A) Hand length (B) Contact us today for all your health and safety needs...

4 Complex protection - PPE for protection against lethal dangers or serious and irreversible injury, eg. protection against chemicals. The European Directive 89/686/EEC specifies the fundamental requirements for PPE. Norms for safety gloves were devised for these different requirements. EN Heat and fire 0 to 4 0 to 5 0 to 4 0 to 4 0 to 4 0 to 4 Behaviour regarding /fire Contact Convective Radiant Resistance to small molten metal splash Resistance to large molten metal splash Performance levels given in numbers: the higher the number, the better the test results. EN Mechanical risks 0 to 4 0 to 5 0 to 4 0 to 4 Abrasion Cut Tear Penetration Performance levels given in numbers: the higher the number, the better the test results. EN 374 (1-3) - Chemical risks Letter symbol Test chemical J K L A B C D E F G H I J K L Methanol Acetone Acetonitrile Dichloromethane Carbon disulphide Toluene Diethylamine Tetrahydrofurane Ethyl acetate n-heptane Sodium hydroxide 40% Sulphuric acid 96% the pictogram with the beaker stands for waterproof safety gloves with low protection against chemical dangers. A glove is considered to be resistant to chemicals if it attains a protection index of at least Class 2 (i.e. > 30 min) with three test chemicals. Tel: Irl: UK: info@gsksafety.com Online:

5 Guide to glove standards EN :1996 knives - Part 1: Chain mail gloves and arm guards. EN 381-7:1999 Protective clothing for users of hand-held chainsaws - Part 7: Requirements for chainsaw protective gloves EN 510:1993 Specification for protective clothing for use where there is a risk of entanglement with moving parts. EN 659:2003+A1:2008 Protective gloves for firefighters. EN 12477:2001/A1:2005 Protective gloves for welders. EN 421:2010 Protective gloves against ionizing radiation and radioactive contamination. EN 659:2003+A1:2008/ AC:2009 Protective gloves for firefighters. EN 374-3:2003/AC:2006 micro-organisms - Part 3: Determination of to permeation by chemicals. EN 420:2003+A1:2009 Protective gloves - General requirements and test methods. EN 388:2003 Protective gloves against mechanical risks. EN :2000 knives - Part 3: Impact cut test for fabric, leather and other materials. EN 374-2:2003 micro-organisms - Part 2: Determination of to penetration. EN 374-1:2003 micro-organisms - Part 1: Terminology and performance requirements. EN :2000 knives - Part 2: Gloves and arm guards made of material other than chain mail. EN 374-3:2003 micro-organisms - Part 3: Determination of to permeation by chemicals. EN :2004 Protective clothing - Electrostatic properties - Part 3: Test methods for measurement of charge decay. EN 13594:2002 Protective gloves for professional motorcycle riders - Requirements and test methods. EN 12477:2001 Protective gloves for welders. EN :1997 Protective clothing - Electrostatic properties - Part 2: Test method for measurement of the electrical through a material (vertical ). EN 511:2006 Protective gloves against cold. EN 407:2004 Protective gloves against thermal risks ( and/or fire). EN 455-1:2000 Medical gloves for single use - Part 1: Requirements and testing for freedom from holes. EN 455-2:2009+A1:2011 Medical gloves for single use - Part 2: Requirements and testing for physical properties. EN 455-3:2006 Medical gloves for single use - Part 3: Requirements and testing for biological evaluation. EN 455-4:2009 Medical gloves for single use - Part 4: Requirements and testing for shelf life determination. EN ISO 21171:2006 Medical gloves - Determination of removable surface powder (ISO 21171:2006). 68 Contact us today for all your health and safety needs...