Machine And Machine Shop Safety Guide-Books Pdf

MACHINE AND MACHINE SHOP SAFETY GUIDE
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D TRAINING, All persons that operate machines and equipment must be trained by a qualified and experienced. person Training must be documented Training records must include the specific machine or. equipment the individual is trained on the date of training and the signature of trainee and. trainer Training must cover, General machine safety as outlined in Section E and F of this Guide. Individual machine training to include, o Use of PPE machine maintenance and machine operation. o A description and identification of the hazard s associated with the machine s. o Guard positioning how they provide protection and the hazards for which they. are intended to protect against, o What to do if a guard is damaged missing or unable to provide adequate. protection, o Under what circumstances guards can be removed and by whom.
Retraining must be provided if, There is a change in job assignment or activity that requires different machinery. There is a change in machine s or equipment available for use. Additional job tasks or activities that present a new hazard. The supervisor designated trainer or EHS determines that retraining is necessary. E GENERAL SAFETY, The following general safety guidance applies to all types of machine equipment and must be. observed whenever operating machinery, Inspect machines and their accessories prior to use for missing parts guards or shields. grips or other damage such as frayed or damaged electrical cords or belts that may affect. If a defect is discovered the machine must be placed out of service until it is repaired or. discarded Out of service machines must be identified Out of Service Do Not Use. Safety glasses or goggles must be worn at all times when operating machinery. Face protection must be worn when the face is exposed to flying particles. Wear work gloves capable of protecting against cuts and punctures from materials. Wear appropriate clothing that fits correctly and is free from loose material Confine. loose clothing ties long hair or jewelry that can become caught in moving parts. Wear sturdy closed toe footwear Establish good footing and maintain good balance. while working, Wear a machinist s apron tied in a quick release manner. Clear unnecessary scrap tools and other objects from the work area before working. Always keep hands a safe distance away from moving parts. Environmental Health Safety Office, Machine and Machine Shop Safety Guide.
Stop the machine immediately if an odd noise excessive vibration or unusual machine. operation or performance occurs, Disconnect the machine from the power sources prior to making repairs or service. Follow George Mason University s Lockout Tagout Program if applicable. When finished working shut off power the machine must come to a complete stop. before leaving it unattended, Keep observers at a safe distance away from the work area. F GENERAL REQUIREMENTS FOR ALL MACHINES, The following general requirements for all machines should be followed in conjunction with the. general safety guidance outlined in Section E of this Guide. All machines must have proper guards capable of protecting persons from potential. hazards and all guards must be in conformity with appropriate OSHA standards If. specific standards are not available the machine design and guards should prevent the. operator from having any part of their body in the danger zone during the operation. The following three areas on all machines danger zones must be guarded. o The point of operation the area on a machine where work is performed such as. cutting shaping boring or forming of stock The guard here should also protect. against flying chips and sparks, o Power transmission apparatus all components of the mechanical system which. transmits energy to the part of the machine performing the work These. components include flywheels pulleys belts connecting rods couplings cams. spindles chains cranks and gears, o Other moving parts all parts of the machine which move while the machine is.
working These can include reciprocating rotating and transverse moving parts. ingoing nip and pinch points as well as feed mechanisms and auxiliary parts of. the machine, Environmental Health Safety Office, Machine and Machine Shop Safety Guide. Hand tools i e feeders push sticks must be available if they increase the users safety. Equipment that requires containment such as revolving barrels ovens spray booths. lasers or other physical hazards must be equipped with an enclosure interlocked with the. drive mechanism or energy source, When the periphery of the blades of a fan is less than seven feet above the floor or. working level the blades must be guarded The opening of the guard must be no larger. than one half inch, A machine designed for a fixed location must be securely anchored. Barricades or enclosures must be in place around automated machinery that poses a risk. to the operator s safety, G ABRASIVE WHEEL MACHINERY. The following safety procedures should be used in conjunction with the general safety tips. outlined in Section E of this guide, Eye protection must be worn at all times.
Guards must cover the spindle end nut and flange projections of the wheel. When mounting a wheel the flanges the collars discs or plates between which wheels. are mounted cannot be less than one third 1 3 the diameter of the wheel. Abrasive wheel machinery must be equipped with secure rigid and adjustable work. rests The work rest must be securely clamped and adjustments cannot be made with the. wheel in motion The work rest must be kept as close to the wheel as possible with a. Environmental Health Safety Office, Machine and Machine Shop Safety Guide. maximum opening of one eighth 1 8 inch, Before using abrasive wheel machinery the wheel must be closely inspected for damages. and a ring test should be performed, o Tap the wheel gently with a light nonmetallic implement such as the handle of a. screwdriver for light wheels or a wooden mallet for heavier wheels If the wheel. sounds cracked dead the wheel must be replaced A sound and undamaged. wheel will give off a clear metallic tone, o Wheels must be dry and free from. sawdust when performing the ring test, otherwise the sound will be deadened.
o The wheels should be tapped at 45 on, each side of the vertical centerline of the. wheel Then the wheel should be, rotated 45 and the test repeated again. The spindle speed of the machine must be checked before mounting the wheel to be. certain that it does not exceed the maximum operating speed marked on the wheel. Before using the machine make sure that the adjustable tongue at the top of the wheel. opening is located within one fourth 1 4 inch of the wheel. All contact surfaces of wheel must be flat and free of foreign matter. The maximum exposure angles specified in the following table must not be exceeded. Guard Exposure Angles, Type of Abrasive Wheel Machinery Exposure Shall Begin at a Point Maximum Exposure Angles. No more than 65 above the, Bench and Floor Stands 90. horizontal plane of the wheel spindle, 125 only when the nature of the.
No more than 65 above the work requires contact with the wheel. Bench and Floor Stands, horizontal plane of the wheel spindle below the horizontal plane of the. No more than 65 above the, Cylindrical Grinders 180. horizontal plane of the wheel spindle, Surface Grinders and Cutting Off No less than 15 below the. Machines horizontal plane of the wheel spindle, Top half of the wheels shall be. Swing Frame Grinders 180, enclosed at all times, Top half of the wheels shall be.
Automatic Snagging Machines 180, enclosed at all times. Where the work is applied to the, Top Grinding wheel above the horizontal 60. centerline, Stand to one side of the wheel when turning on the power. Do not use the side of the grinding wheel to shape stock. Feed the stock into the wheel with light to medium pressure Do not force the piece. Environmental Health Safety Office, Machine and Machine Shop Safety Guide. H GENERAL REQUIREMENTS FOR WOODWORKING MACHINERY, Each woodworking machine must have a mechanical or electrical power control so that.
the operator can turn off the power without leaving the normal working position. For machines where injury to the operator might result if motors were to restart after. power failures provisions must be made to prevent machines from automatically. restarting upon restoration of power, Power and operating controls must be within reach of the operator when occupying the. normal working position, Saws are one of the more commonly used woodworking machines The following safety. procedures should be used in conjunction with the general safety tips outlined in Section E of. this guide, Radial saws must have the sides of the lower exposed portion of the blade guarded to the full. diameter of the blade by a device that will automatically adjust itself to the thickness of the stock. and remain in contact with stock being cut When used for ripping non kickback fingers or dogs. located on both sides of the saw must be present and adjusted properly Also the cutting head. must return to the starting position when released by the operator. Table saws used for ripping and crosscutting must have the portion of the saw above the table. equipped with a self adjusting guard The guard must adjust to the thickness of the material. being cut and remain in contact with it For table saws used for ripping a spreader must be. installed to prevent material from squeezing the saw or kicking back and must also be equipped. with anti kickback fingers to hold the stock down in the event that the saw kicks back the. Environmental Health Safety Office, Machine and Machine Shop Safety Guide. Band saws must be equipped with a self adjusting guard for the portion of the blade between the. sliding guide and the upper saw so that it raises and lowers with the guide. Planers must have all cutting heads and saws if used covered by a metal guard no less. than one sixteenth 1 16 inch thick if sheet metal is used or three sixteenth 3 16 inch. thick if cast iron is used, The loading and unloading ends of planers must be guarded to keep hands out of the.
point of operation, An anti kickback finger device must be in place on the in feed side across the width of. the machine, Environmental Health Safety Office, Machine and Machine Shop Safety Guide. Do not feed stocks of different thickness through the planer simultaneously Thinner. stock will be kicked back, Stand back after putting the stock through the feed to avoid injuries from kickback and. flying splinters, Use a barrier or guardrail when the machine is running. K DRILLS PRESSES BORING MORTISING MACHINES, Secure stock to the working surface using a clamp whenever possible.
An emergency shut off switch must be located near or on the equipment. Only use safety bit chucks with no projecting screws. Bits must be enclosed with a guard that covers the bit and chuck above the material being. The top of the mortising cutting chain and driving mechanism must be covered. If a counterweight is used prevent it from dropping by bolting it to the bar or attaching a. safety chain to it, Operating treadles must be covered with an inverted U shaped guard. For automatic wood turning lathes with rotating knives the cutter head must be. completely covered with a metal shield or hood, For manual lathes the cutter heads must be covered as completely as possible with a. hood or shield, Lathes that are used for turning long stock must be covered with long curved guards that. extend over the top of the lathe, The tool rest must be set closely to the stock and should only be adjusted when the lathe. is not running, Environmental Health Safety Office.
Machine and Machine Shop Safety Guide, On hand fed lathes the tool and the point of operation must be guarded with a Plexiglas. tool guard See image below, The information contained in this Guide is not inclusive of all OSHA regulations Please contact Environmental. Health and Safety Office at 703 993 8448 or visit www OSHA gov for more information regarding workplace. hazards safety precautions and regulations, Environmental Health Safety Office. Machine and Machine Shop Safety Guide, Appendix A Machine Shop Inspection Form. Environmental Health, Safety Office, Machine Shop Inspection Form.
Building Room Inspected By, Supervisor Date, SECTION 1 GENERAL SAFETY INFORMATION. General Safety Tips Yes No N A Comments, Safety glasses worn at all times. Face protection is worn when necessary, Loose clothing loose neck wear and jewelry are not. worn while operating or in proximity to machinery, Long or loose hair contained in a scarf cap or other. appropriate fashion, Sturdy closed toe footwear is worn at all times.
A machinist s apron is worn and tied in a quick release. Appropriate work gloves are worn, Electrical cords and belts are in good condition. No missing parts guards or shields or other damage that. may affect operation, Damaged equipment is withdrawn from service for. repair or destruction and has been appropriately tagged. or marked as Out of Service Do Not Use, Defective machinery equipment or hand tools have. been reported to the supervisor, Hand tools i e feeders push sticks are only used for. their designed purposes, Unnecessary scrap tools and other objects are removed.
Machine and Machine Shop Safety Guide 07 2015 4 Hand tools i e feeders push sticks must be available if they increase the users safety Equipment that requires containment such as revolving barrels ovens spray booths lasers or other physical hazards must be equipped with an enclosure interlocked with the

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