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1910.263(d) Flour-Handling Equipment

OSHA 1910 General Industry > R Special Industries > 1910.263 Bakery Equipment > 1910.263(d) Flour-Handling Equipment

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1910.263(d)(1) General Requirements for Flour Handling

1910.263(d)(1)(i)

Wherever any of the various pieces of apparatus comprising a flour-handling system are run in electrical unity with one another the following safeguards shall apply:

Wherever a flour-handling system is of such size that the beginning of its operation is far remote from its final delivery end, all electric motors operating each apparatus comprising this system shall be controlled at each of two points, one located at each remote end, either of which will stop all motors.

1910.263(d)(1)(i)(c)

[Reserved]

1910.263(d)(1)(i)(d)

Control circuits for magnetic controllers shall be so arranged that the opening of any one of several limit switches, which may be on an individual unit, will serve to deenergize all of the motors of that unit.

1910.263(d)(2) Bag Chutes and Bag Lifts (Bag-Arm Elevators)

1910.263(d)(2)(i)

Bag chutes (gravity chutes for handling flour bags) shall be so designed so as to keep to a minimum the speed of flour bags. If the chute inclines more than 30 deg. from the horizontal, there shall be an upturn at the lower end of the chute to slow down the bags.

1910.263(d)(2)(iii)

[Reserved]

1910.263(d)(2)(iv)

Man lifts shall be prohibited in bakeries. Bag or barrel lifts shall not be used as man lifts.

1910.263(d)(2)(ii)

Bag-arm elevators with manual takeoff shall be designed to operate at a capacity not exceeding seven bags per minute. The arms on the conveyor chain shall be so spaced as to obtain the full capacity of the elevator with the lowest possible chain speed. There shall be an electric limit switch at the unloading end of the bag-arm elevator so installed as to automatically stop the conveyor chain if any bag fails to clear the conveyor arms.

1910.263(d)(3) Dumpbin and Blender

1910.263(d)(3)(i)

[Reserved]

1910.263(d)(3)(iii)

[Reserved]

1910.263(d)(3)(iv)

[Reserved]

1910.263(d)(3)(v)

All dumpbin and blender hoods shall be of sufficient capacity to prevent circulation of flour dust outside the hoods.

1910.263(d)(3)(vi)

All dumpbins shall be of a suitable height from floor to enable the operator to dump flour from bags, without causing undue strain or fatigue. Where the edge of any bin is more than 24 inches above the flour, a bag rest step shall be provided.

1910.263(d)(3)(vii)

A control device for stopping the dumpbin and blender shall be provided close to the normal location of the operator.

1910.263(d)(3)(ii)

[Reserved]

1910.263(d)(4)

[Reserved]

1910.263(d)(5)

[Reserved]

1910.263(d)(6) Storage Bins

1910.263(d)(6)(i)

[Reserved]

1910.263(d)(6)(iii)

Storage bins where the side is more than 5 feet in depth shall be provided with standard stationary safety ladders, both inside and outside, to reach from floor level to top of bin and from top of bin to inside bottom, keeping the ladder end away from the moving screw conveyor.

1910.263(d)(6)(iv)

[Reserved]

1910.263(d)(6)(v)

[Reserved]

1910.263(d)(6)(vi)

The main entrance cover of large storage bins located at the interior exit ladder shall be provided with an electric interlock for motors operating both feed and unloading screw, so that these motors cannot operate while the cover is open.

1910.263(d)(6)(ii)

Storage bins shall be provided with gaskets and locks or latches to keep the cover closed, or other equivalent devices in order to insure the dust tightness of the cover. Covers at openings where an employee may enter the bin shall also be provided with a hasp and a lock, so located that the employee may lock the cover in the open position whenever it is necessary to enter the bin.

1910.263(d)(7) Screw Conveyors

1910.263(d)(7)(i)

[Reserved]

1910.263(d)(7)(iii)

The covers of all screw conveyors shall be made removable in convenient sections, held on with stationary clamps located at proper intervals keeping all covers dust-tight. Where drop or hinged bottom sections are provided this provision shall not apply.

1910.263(d)(7)(ii)

[Reserved]

1910.263(d)(8) Sifters

1910.263(d)(8)(i)

Enclosures of all types of flour sifters shall be so constructed that they are dust-tight but readily accessible for interior inspection.

1910.263(d)(9) Flour Scales

1910.263(d)(9)(i)

[Reserved]

1910.263(d)(9)(iii)

Traveling or track-type flour scales shall be equipped with bar handles for moving same. The bar should be at least 1 inch in diameter and well away from trolley track wheels.