OSHA Subpart I Tools - Hand & Power

Transcription

1 OSHA Subpart I Tools - Hand & Power

2 General Requirements (b) Guarding (1) When power operated tools are designed to accommodate guards, they shall be equipped with such guards when in use. Guards on power tools shall not be removed. This includes table saws, circular saws, nailers, and joiners.

3 General Requirements (b) Guarding (5) Exposure to blades. ½ inch mesh <7 ft

4 General Requirements (c) Personal protective equipment: Employees using hand and power tools and exposed to the hazard of falling, flying, abrasive, and splashing objects, or exposed to harmful dusts, fumes, mists, vapors, or gases shall be provided with the particular PPE necessary to protect them from the hazard.

5 Hand Tools (c) Impact tools, such as drift pins, wedges, and chisels, shall be kept free of mushroomed heads.

6 Power-Operated Hand Tools (b) Pneumatic power tools This standard covers pneumatically powered tools with automatic fastener feed, which operate at more than 100 psi Muzzle to be depressed to eject nails or staples

7 Power-Operated Hand Tools (b) Pneumatic power tools (4) Compressed air shall not be used for cleaning purposes except when reduced to less than 30 psi. This does not apply to concrete forms, mill scale and similar cleaning purposes.

8 Power-Operated Hand Tools (c) Fuel powered tools Turn off power tools when refueling

9 Power-Operated Hand Tools (e) Powder-actuated tools (5)Tools shall not be loaded until just prior to the intended firing time. Neither loaded nor empty tools are to be pointed at any employees. Hands shall be kept clear of the open barrel end.

10 Grinding Wheels Use Work Rests To Support Work Maximum Gap Not over 1/8

11 Mechanical Power Transmission Apparatus (o) Approved materials (5) Guardrails and toeboards (i) Guardrails shall be 42 in height with midrails between top rails and floor

12 Wood Rails: 2 X 4 s Minimum or two 1 X 4 s 1 X 4 Midrail (Min) Toe board 4 high Wood Posts: 2 X 4 s Spaced not over 8 Feet Pipe Posts: 1-1/4 I.D.

13 OSHA Subpart J Welding and Cutting

14 Hoisting: cylinders secured in a cradle, not with chokers Acetylene Bottle Valve protection caps shall be in place (when stored or being moved) To move cylinders by hand, tilt them and roll them on their bottom edges

15 No lifting by the valve protection caps secured in vertical position

16 Valve to be closed: 1. When Finished With Task 2. When Cylinders are Empty 3. When Moving Cylinders Use a cylinder truck to keep cylinders from being knocked over while in use. Cylinders secured upright at all times, unless being hoisted or carried.

17 Placement of Cylinders 20 ft from combustibles (wood shavings or oil) Cylinders kept far from welding or cutting operations (or use shields) Place cylinders so they cannot become part of an electrical circuit

18 or 5 foot barrier 20 minimum Fuel Gas Oxygen In storage

19 Regulator Valve Valve shall always be opened slowly to prevent damage to the regulator Before removing the regulator from the cylinder valve, shut the valve and release the gas from the regulator Hose couplings shall be such that they cannot be unlocked or disconnected by means of a straight pull without rotation

20 Arc Welding cable free from repair or splices 10 ft (minimum) except if standard insulated connectors are used or if slices have comparable insulating quality

21 Employers shall instruct employees in the safe means of arc welding and cutting. When electrode holders are left unattended, electrodes shall be removed. Holders so placed that they cannot make electrical contact with employees or conducting objects.

22 In confined spaces quick extraction should be arranged An attendant shall be stationed outside to observe the welder at all times. Have pre-planned rescue procedures in place.

23 Welding, cutting or heating of metals of toxic significance (zinc, lead, cadmium, or chromium-bearing metals) in enclosed spaces use proper exhaust ventilation All workers in the area have the same protection or use air line respirators

24 Ventilation And Protection In Welding, Cutting, And Heating. (d) Inert-gas metal-arc welding (1)(ii) Employees in the area not protected from the arc by screening shall be protected by filter lenses. When welders are exposed to the arcs of other welders, filter lens goggles are to be worn under the helmets.

25 Welding, Cutting, And Heating In Way Of Preservative Coatings (c)(1) In enclosed spaces, all surfaces covered with toxic preservatives shall be stripped of all toxic coatings for a distance of at least 4 inches from the area of heat application or provide workers with air line respirators area of heat application 4 4

26 OSHA Subpart K Electrical

27 General Requirements (e) Splices: Conductors shall be spliced or joined with splicing devices designed for the use or by brazing, welding, or soldering with a fusible metal or alloy. Soldered splices shall first be so spliced or joined as to be mechanically or electrically secure without solder and then soldered. (i) 600 Volts, nominal, or less (1)(i) Working clearances: The dimension of the working space in the direction of access to live parts operating at 600 V or less and likely to require examination, adjustment, servicing, or maintenance while live shall not be less than indicated in Table K-1. Workspace (clearance) not to be less than 30 inches wide in front of the equipment.

28 General Requirements (i)(1)(v) Headroom: The minimum headroom of working spaces above service equipment, switchboards, panelboards, or motor control centers shall be 6 feet 3 inches

29 Wiring Design And Protection (a) Use and identification of grounded and grounding conductors (1) A conductor used as a grounded conductor shall be identifiable and distinguishable from all other conductors. (2) No grounded conductor shall be attached to any terminal or lead so as to reverse designated polarity. (3) A grounding terminal or grounding-type device on a receptacle, cord connector, or attachment plug shall not be used for purposes other than grounding.

30 Wiring Design And Protection (b) Branch circuits (1) ground-fault protection (i) Employer shall use either ground fault circuit interrupters (GFCI) or an assured equipment grounding conductor program. (b)(1) ground-fault protection (ii) All 120-volt, single-phase 15 and 20 amp receptacle outlets on construction sites, which are not part of the permanent wiring of the facility and which are in use by workers shall have approved GFCI for personnel protection. GFCI are not needed on receptacles of 2-wire, single-phase portable generators rated not more than 5kW where circuit conductors of the generator are insulated from the generator frame and other grounded surfaces.

31 Wiring Design And Protection (1) Ground-Fault Protection (iii) Employer shall establish and implement an assured equipment grounding conductor program on construction sites covering all cord sets and receptacles which are not a part of the facility. (b)(1)(iii)[c] Each cord set shall be visually inspected before each day s use for external defects, such as deformed or missing pins or insulation damage, and for indications of possible internal damage. Equipment found damaged or defective shall not be used until repaired. (b)(1) (iii) [E] All required tests shall be performed: [1] before first use; [2] before equipment is returned to service after repairs; [3] before equipment is used after any incident that could do damage; and [4] every 3 months (cord sets not exposed to damage shall be tested every 6 months).

32 Wiring Design And Protection (c) Outside conductors and lamps (1)(ii) Clearance (minimum) from the ground to open conductors shall be as follows: [A] 10 ft above finished grade or sidewalks; [B] 12 ft above vehicles (not trucks); [C] 15 ft above trucks; and [D] 18 ft over public streets, roads, etc. (c)(1)(iv) Clearance over roofs: Conductors above roof space accessible to workers on foot shall have clearance from the highest point of the roof of not less than 8 feet vertical distance for insulated conductors, not less than 10 feet vertical or diagonal clearance for covered conductors, and not less than 15 feet for bare conductors.

33 Wiring Design And Protection (c)(1)(iv)[b]&[c] Exception: If roof is not normally accessible on foot, fully insulated conductors shall have a vertical or diagonal clearance of at least 3 ft. When voltage between conductors is 300 volts or less, and roof slope is not less than 4 in 12, the clearance from roofs shall be at least 3 feet. (f) Grounding (6) Grounding path: The path to ground from circuits, equipment, and enclosures shall be permanent and continuous.

34 Wiring Methods, Components, And Equipment For General Use (a)(1)(ii) No wiring systems of any type shall be installed in ducts used to transport dust, loose stock or flammable vapors. No wiring system of any type shall be installed in any duct used for vapor removal or any shaft containing only such ducts. (a)(2)(ii)[f] Temporary lights shall not be suspended by their electric cords unless cords and lights are designed for this means of suspension. [G] Portable electric lighting used in wet and/or other conductive locations (drums, tanks, vessels) shall be operated at 12 volts or less. 120-volt lights can be used if protected by GFCI.

35 Wiring Methods, Components, And Equipment For General Use (a)(2)(ii)[j] Extension cord sets used with portable electric tools and appliances shall be of 3-wire type and shall be designed for hard or extra-hard usage. Flexible cords used with temporary and portable lights shall be designed for hard or extra-hard usage. (c) Knife switches: Single-throw knife switches shall be so connected that the blades are dead when the switch is in the open position. They shall be so placed that gravity will not tend to close them.

36 Wiring Methods, Components, And Equipment For General Use (j) Equipment for general use (1)(iii) Portable lamps shall be wired with flexible cord and an attachment plug of the polarized or grounding type. [C] Handlamps shall be equipped with a substantial guard attached to the lampholder or handle. Where the exact location of underground electric power lines is unknown, employees using jack-hammers, bars, or other hand tools which may contact a line shall be provided with insulated protective gloves.

37 General Requirements (e) Cords and cables (e)(1) Worn or frayed electric cords or cables shall not be used. (e)(2) Extension cords shall not be fastened with staples, hung from nails, or suspended by wire.

38 Staples Nails Wire Plastic Ties