safety

Health and Safety& Risk Assessment for users of Brunel 007 - Composites Manufacturing Laboratory: 

Health and Safety & Risk Assessment for users of Brunel 007 - Composites Manufacturing Laboratory

Staff associated with composite modules: 

Staff associated with composite modules Academic Stephen Grove, John Summerscales Mike Miles (MATS320), Miggy Singh, Wayne Hall, Hom Nath Dhakal (projects) Technician Greg Nash Researchers Richard Cullen, Elodie Garone, Chris Hoppins, Nilmini Dissanayake

Principal material groups: 

Principal material groups Resins unsaturated polyester (UPE) epoxide/epoxy (Ep) phenolic Thermoplastics polypropylene (PP) nylon (PA: polyamide) polyester (PET: polyethylene terephthalate) poly ether ether ketone (PEEK) Fibres aramid (Kevlar, Twaron) carbon glass (usually E-glass) Solvents, release agents, etc

Health and Safety: 

Health and Safety Control of Substances Hazardous to Health (COSHH) can you substitute a safer material can you use an engineering solution are you using appropriate personal protection Environmental Protection Act you must dispose of materials in the correct manner A clean and tidy workplace is a safer workplace if you are not using it put it away if you must leave anything out, make sure it is clearly labelled

Health and Safety: Unsaturated PolyEster resin (UPE): 

Health and Safety: Unsaturated PolyEster resin (UPE) base resin: polymer chains with reactive sites (50%) styrene: reactive diluent (50%) volatile flammable: flash point 31 degrees Centigrade, explosive limits 1.1-8.0% NO SMOKING, no naked flames toxic: (inhalation) ODOUR threshold 25 ppm (Scandinavian Occupational Exposure Limit) little inhalation irritation <210 ppm (UK OEL is 100 ppm 8h TWA) irritating to nose and throat above 500 ppm (ingestion) IRRITATING to mouth, throat and stomach may lead to vomiting and dizziness harmful effects at >4 g/kg of body weight (skin contact) IRRITATING: evident as itching and redness frequent or prolonged contact leads to dermatitis degreases skin (eye contact) IRRITATION may last several hours

Health and Safety: Unsaturated PolyEster resin (UPE): 

Health and Safety: Unsaturated PolyEster resin (UPE) COSHH substitution: resin without styrene (eg epoxy) or low styrene emission resin Engineering controls general ventilation to reduce background level local exhaust ventilation with flow away from operator use shielded rollers to reduce droplet cloud protection:lab coat, barrier cream, gloves, goggles Disposal to waste solvent bottle if resin uncured

Health and Safety: Unsaturated PolyEster resin (UPE): 

Health and Safety: Unsaturated PolyEster resin (UPE) Peroxide Initiator (usually added as 1-2%) acetyl acetone peroxide (AAP), benzoyl peroxide (BzO2), hydrogen peroxide (H2O2), methyl ethyl ketone peroxide (MEKP) SEVERE IRRITANTS to skin CAUSE BURNS: wash immediately for 15 minutes with water and obtain doctors attention CORROSIVE to moist tissue (eyes, nose, throat, airways to lungs) Irreversible damage may be caused to eyes by prolonged contact avoid contact between MEKP and rust BzO2: EXTREME RISK OF EXPLOSION by shock, friction, fire or ignition COSHH substitution: different resin system? engineering controls: use as a dilute solution if practicable protection: protective clothing, face/eye protection Handle and open container with care Ignition: contact with combustible material may cause fire do not mop up with e.g. paper cloths Disposal do not empty into drains

Health and Safety: Unsaturated PolyEster resin (UPE): 

Health and Safety: Unsaturated PolyEster resin (UPE) Accelerators (1-2%) cobalt-based solutions in styrene (cobalt naphthenate or cobalt-octoate) amine-based 25% solution in styrene TOXIC if swallowed, inhaled or allowed to remain in contact with the skin FUMES from burning accelerators contain toxic materials

Health and Safety: Unsaturated PolyEster resin (UPE): 

Health and Safety: Unsaturated PolyEster resin (UPE) NEVER, NEVER mix initiator directly with accelerator, they will form an EXPLOSIVE mixture

Health & Safety: Epoxy resin (Ep): 

Health & Safety: Epoxy resin (Ep) Base resin mild to moderate primary skin irritants irritation potential increased by prolonged skin contact EPOXY SENSITIZATION: skin reddens in close proximity to uncured resin For all curing agents wear protective clothing and goggles ventilation is essential

Health & Safety: Epoxy resin curing agents: 

Health & Safety: Epoxy resin curing agents Aliphatic amines alkaline caustic materials cause burns and severe tissue damage to skin, mucous membranes and eyes ALL contact should be avoided Solid aromatic amines less caustic, less irritating and less sensitising than aliphatic amines diaminodiphenylmethane (DAPM) is toxic/known to cause liver damage in humans DAPM can be absorbed through the skin so all contact should be avoided Cycloaliphatic amines variable in their irritation and sensitising effect extremely irritating to the eyes Polyamides skin irritants of varying sensitivity, but generally non-sensitising to the skin extremely irritating to the eyes

Health & Safety: thermoplastics: 

Health & Safety: thermoplastics generally chemically inert need to be processed at high temp. beware of molten polymer (hot!)

Health & Safety: Reinforcement Fibres : 

Health & Safety: Reinforcement Fibres all reinforcements should be regarded as a nuisance dust when cutting/machining control limits are 10 mg/m3 total dust 5 mg/m3 for man-made mineral fibre respirable dust is believed to have a particle size of <3 μm for safety a value of 5 μm is assumed the major reinforcement fibre diameters are in the range 6-15 μm carbon and glass fibres are not expected to break into lengths shorter than the diameter aramid (and polyethylene) fibres have a complex microstructure and may fibrillate into particles of <3 μm (respirable?) disposal All man-made fibres are a notifiable waste and must be disposed of into the bagged bins provided

Health & Safety: ancillary materials: 

Health & Safety: ancillary materials you are also likely to use .... solvents release agents etcetera read the Material Safety Data Sheet and compile your own risk assessment before you start work

Health & Safety:  sharps: 

Health & Safety: sharps You will be working with potentially dangerous chemicals They need not be harmful if they are treated with respect The most common entries in the Accident Book are cuts from knives or from sharp edges on demoulding

First Aid at Work plus ...: 

First Aid at Work plus ... The nominated First Aiders for Brunel are: Steve Edmonds,  2.32536 Brunel W15 Tony Tapp,  2.32539 Brunel W14 both in laboratories near to the South door Cumberland Centre Minor Accident Unit  567999 Royal Eye Infirmary  315159 In an emergency, call Security first on 3333, (Security can than expedite the services once on site) then ring for external services using 9.999

Health & safety: summary: 

Health & safety: summary Remember to: read and follow suppliers safety sheet and instructions for use store and handle materials in the appropriate safe way consider alternative materials and engineering controls use ventilation and fume/dust control equipment properly wear appropriate personal protection good housekeeping is essential for your safety and that of your colleagues

Health & safety: summary: 

Health & safety: summary Do not: smoke, eat or drink in the laboratory or storage areas mix peroxide initiator with accelerators allow waste to accumulate use solvents for cleaning skin use combustible materials to soak up spillage

And ...: 

And ... if in doubt ASK !!

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Risk assessment: 

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Risk assessment: 

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