Portable Power Tools Health Safety and Environment Training Course Rev. 05/12/2018

DEFINITION Portable Power Tool: A tool that can be held in the operator's hands but is not hand powered. Common sources of power: Electricity (Alternate Current) Electricity (Batteries) Engine Hydraulic Pneumatic There are advantages and disadvantages for each type of power source

Tools are common in “day-to-day” work HAZARD RECOGNITION Tools are common in “day-to-day” work Difficult to spot hazards due to familiarity Most tools manufactured with safety devices, which are often removed Users must inspect the tool daily Tools are often misused I. Background for the Trainer: If tools are available, show them (both good and damaged) to the class. Ask the class to identify potential hazards with the various tools. II. Speaker’s Notes: It is easy to overlook hazards on hand tools, or figure that it is no big deal. You might think, “I’ll just use it this once.” Another favorite, “I’ll send this in for repair as soon as I finish this job.” Most tool manufacturers will build them with adequate safety devices. As an employee who uses power tools, one of your jobs is to inspect tools before each use to be sure there is no damage. It’s important to use tools only for the jobs they were intended to do. Otherwise, important safety features may be useless. It is also a good idea to have a tool checklist attached to the cord, if powered, as a daily reminder to inspect the tool for problems.

THE FIVE BASIC RULES FOR POWER TOOLS Keep all tools regularly verified and maintained Use the right tool for the job Examine each tool for damage before use Operate tools in accordance with the manufacturer’s instructions Provide and use the proper personal protective equipment I. Background for the Trainer: Display or pass around some examples of operation manuals for various tools used at your facility. If inspection sheets are available, pass around samples to the audience. There is another PowerPoint presentation available on PPE. II. Speaker’s Notes: Remember these five keys to power tool safety. In doing so, you’re helping to protect yourself, as well as your co-workers, from injury.

CARRYING OR TRANSPORTING TOOLS Use a tool box, tool-holder, belt or pouch, this will protect the person and the tool Carry pointed or sharp tools with the point or cutting edge away from the body Do not carry tools by hand up ladders Do not lay tools down where people can trip on them or they can fall on someone Hand tools off, do not throw them Use always proper bags to lift power tools at height

ELECTRICAL POWER TOOLS

ELECTRICITY’S EFFECT ON THE HUMAN BODY… CONTROL MEASURES Use Low Voltages Tools Insulation/enclosure of live parts Earthing Fuse Circuit breaker Residual Current Device (RDC) Right PPE 7

When possible batteries power tools should always be preferred! Low Voltages Tools Unless really specific cases, Power Tools Electric Voltage shall not exceed 220 Volts. When possible batteries power tools should always be preferred!

INSULATION/ENCLOSURE Live parts cannot be touched. Live parts of electrical equipment operating > 50 volts must be guarded against accidental contact If equipment has a metal enclosure, precautions must be taken to prevent metalwork becoming live. This is achieved by double insulation. Live parts are covered by two layers of insulator. Each layer is capable of adequate insulation. Double Insulated Marking 9

Never carry an electrical tool by its cord. ELECTRICAL CORDS Inspect cords regularly for signs of stretching, insulation damage and kinking. Never carry an electrical tool by its cord. Always remove the cord at the plug. Do not pull on the cord. 10

EXTENSION ELECTRICAL CORDS Always use the correct extension cord for the job. An undersized cord can cause a drop in tool power and overheating. Hands must be dry when plugging and unplugging flexible cords. For temporary work only. Do not use as a rope to pull or lift objects. Should not be fastened with staples or hung over hooks. 11

PNEUMATIC POWER TOOLS

Powered by compressed air PNEUMATIC TOOLS Powered by compressed air Main hazard - getting hit by a tool attachment or by a fastener the worker is using with the tool Take the same precautions with an air hose that you take with electric cords 13

PNEUMATIC TOOLS - FASTENING Ensure tool is fastened securely to the air hose to prevent a disconnection Use a whip check to connect hoses or positive locking device attaching the air hose to the tool 1926.302(b)(1) Whip check used to secure hoses Positive locking device to attach hose to the tool 14

PORTABLE POWER TOOLS – INSPECTION AND MAINTENANCE

USER CHECKS User checks must be performed every time before tool is take into use (i.e. every shift): Is there any visible damage to the outer case of the tool? Is electric cable / air hose free from cuts and abrasions? Is the plug / couplings in good condition? Are there any overheating or burn marks? Are “dead-man” devices working properly? Are all guards and safety features in place? Was equipment subjected to conditions for which it is not suitable, e.g. it is wet or excessively contaminated? 1926.303 (c)(7) A stable and undamaged wheel when tapped will give a clear metallic tone or “ring.” 16

FORMAL INSPECTION BY COMPETENT PERSON The most important component of a maintenance regime is the FORMAL visual inspection, carried out routinely by a trained person; PERIODS of such inspection shall be defined in site specific procedures depending on the type of equipment and conditions of use; Formal inspection by competent person must be RECORDED.

COLOR CODING SYSTEM To maximize the maintenance and inspection of tools, therefore Color Coding system to be applied as below: If there is no color coding appeared on tools or color coding tag on defect, therefore the inspector shall check the first register came from each tools

Grinding

GRINDING SAFETY DEFINITION A grinding machine, often shortened to grinder, is a machine tool used for grinding, which is a type of machining using an abrasive wheel as the cutting tool; each grain of abrasive on the wheel's surface cuts a small chip from the workpiece via shear deformation 20

GRINDING SAFETY HAZARDS Eyes & face injury, cut & scratches, legs & fits injury Sparks can cause burn Fire and explosion Irritation of skin Dust Vibration White finger Noise Electric shock 21

GRINDING SAFETY Employers are responsible for the safe condition of machines Eye and finger loss is a common result of improper abrasive wheel machine usage Rotating or flying objects injure and even kill daily Abrasive wheel machines are often downplayed in the workplace 22

GRINDING SAFETY SAFETY MEASURES A fire blanket or similar means must be used to ensure sparks do not fall on areas below A fire extinguisher (foam or powder) must be available Sparks must be contained to protect other operatives Eye protection must be worn

automatically returns to OFF GRINDING SAFETY CHECKING THE GRINDER double insulated emblem spindle speed rating of the machine CE standard size of disk designed for no cracks in the casing “deadman” switch automatically returns to OFF grip handle is secure casing screws intact guard secure no more than 150° exposure of the wheel

GRINDING SAFETY THE ANGLE GRINDER direction of rotation locking spigot to be used for locking mechanism when changing wheel guard adjusted so that fingers cannot be caught in the rotating wheel air vents for cooling must be clear “t” bar to be used for all operations failure to use this may result in loss of control of the machine threaded hole for “t” bar may be used for power brushing

GRINDING SAFETY domestic 3 pin plugs are not to be used, plug tops are to be of the industrial locking variety inspection colour coding a spindle flange spanner is to be used to loosen and tighten the flange; hammer and punch must never be used; the flange is not to be overtightened but to be tightened to a firm tightness by hand

GRINDING SAFETY trade mark dimensions in mm referring normative speed manufacturing or expiring date

GRINDING SAFETY INFORMATION all this information must be clearly reported on the face of the grinding wheel, in case they are not, report immediately to the supervisor and HSE; anyway do not use it

CONSEQUENCES for YOU and/or COLLEAGUES could be OUT OF SCALE! GRINDING SAFETY NEVER, NEVER and NEVER use an abrasive disc as a cutting disc, it may explode!!! CONSEQUENCES for YOU and/or COLLEAGUES could be OUT OF SCALE!

GRINDING SAFETY CONSEQUENCES

GRINDING SAFETY cutting disk is thinner grinding disk is thicker

GRINDING SAFETY TESTING A DISK FOR DEFECT Before using any disks a visual inspection must be done. disk is supported on a wooden spindle and tapped lightly with a wooden striker a dull sound is indicative that the disk is flawed or damaged and may shatter when used

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z GRINDING SAFETY order of marking 1 nature of abrasive A - C 2 grain size 36 3 grade L 4 structure 5 5 nature of bond V Aluminium oxide abrasive - A Silicon carbide abrasive - C coarse medium fine very fine 8 30 70 220 10 36 80 240 12 45 90 280 14 54 100 320 16 60 120 400 20 150 500 24 180 600 spacing from the closest to open 0 5 10 1 6 11 2 7 12 3 8 13 4 9 14 V: vitrified S: silicate R: Rubber B: resinoid (synthetic resin) BF: resinoid (reinforced synthetic resin) RF: rubber reinforced E: shellac M: magnesia A B C D E F G H I J K L M N O P Q R S T U V W X Y Z SOFT MEDIUM HARD

GRINDING SAFETY REMEMBER Never operate a grinder before have compared the speed rating of the machine to that one on the disk, the rated speed of the disk must be equal or at least greater than the spindle rating of the grinding machine When not in use electrical tools are to be isolated from the power source Cutting disks are not to be used for grinding under any circumstance Feed the disk into the cut slowly allowing the weight of the grinder to do the work, never force the grinder into a cut! Every few minutes of operation dress the disk When stopping the grinder make sure the disk has come to a complete stand before putting the grinder down Changing the disk place the plug in the pocket in order there can be no accidental energisation of the machine On board Vessels and any other Offshore realities it is matter of common sense to use air powered portable tools or at least 48V electrical portable tools! IF IN DOUBT, ASK!