Loading (50 kb)...'
(continued)
(c) 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 floor, a bag rest step shall be provided.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4532. Storage Bins.
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.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4533. Screw Conveyors.
The covers of all screw conveyors shall be made removable in convenient sections, held on with clamps at proper intervals keeping all covers dust-tight. Where drop or hinged bottom sections are provided this provision shall not apply.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4534. Enclosures of Flour Sifters.
Enclosures of all types of flour sifters shall be so constructed that they are dust-tight but readily accessible for interior inspection.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4535. Trough Hoists.
(a) Safety catches shall be provided for the chain so that the chain will hold the load in any position.
(b) Safety hooks shall be used.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4536. Air Conditioning Units, Bread Coolers, Fermentation Rooms, and Other Similar Locations.
On large units with doors to chambers large enough to be entered, all door locks shall be operable from both inside and outside.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4537. Locking Devices on Steam Kettles.
Positive locking devices shall be provided to hold steam kettles in the desired position.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4538. Pan Washing Tanks.
Power ventilated exhaust hoods shall be provided over the tanks.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4539. Pomace Pumps.
(a) The auger or screw mechanism located at the bottom of the intake hopper of a wine pomace pump shall be either enclosed, guarded by location or guarded by the use of the following methods:
(1) A grille or grating with a maximum opening size of 6 inches by 6 inches securely installed over the top of the intake hopper, and at least 6 inches above the auger or screw mechanism,
(2) Electrical/mechanical interlock switches that will de-energize the pump when the grille or grating is not in a secured position above the pump's auger flight, and
(3) An effective emergency "stop system" installed adjacent to the safety grilles or grates at a location readily accessible to the operator.
(b) In lieu of the use of the methods in (a), hopper sides shall be provided that extend at least 36 inches above the auger flight and have rolled or smooth edges free of sharp projections.
(c) Shear pins on the pumps shall be maintained in accordance with the manufacturers' specifications.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4540. Pressure Bottling Machine.
Pressure bottling machines shall be provided with an enclosure. The enclosure shall extend downward at sides and rear to a point level with that part of the machine on which the bottle stands while being filled, and upward to a point of at least four inches higher than the top of the bottle, and be so constructed that each bottle, when being filled, shall be protected similarly by a solid guard on the side facing the operator. When the bottling is done under a pressure of more than 75 pounds per square inch, such enclosure shall be constructed of metal not less than No. 12 U.S. Standard gage.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4541. Cake Cutter (Band Knife).
Band wheels of band knives shall be completely encased and all portions of the blade shall be enclosed or guarded except that portion between the guide and the table that is necessary for the thickness of the material being cut.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4542. Mixers.
(a) Horizontal food mixers shall have a cover/enclosure with an interlocking device so arranged that power cannot be applied to the agitators unless the cover/enclosure is in place on the mixer. Only minor openings in the cover/enclosure, such as ingredient doors, flour inlets, etc., each representing less than 1 1/2 square feet in area shall be capable of being opened while the mixer is in operation.
(b) Horizontal nontilting dough mixers with front discharge doors shall have safety controls so arranged that power cannot be applied to the agitator with the front discharge doors in the open position unless two-handed controls are concurrently utilized.
(c) Horizontal tilting food mixers, when tilted, shall be operated with the cover open only:
(1) If equipped with an electrical "inch" device designed to prevent the operator from reaching into the mixer by requiring the concurrent use of both hands to actuate the mixer or by being a single control protected against accidental actuation and so located that the operator cannot reach into the mixer while operating the single control, or
(2) If belt driven, the belt shifter shall be so arranged that it will move the belt to the loose pulley and hold it there while the mixer bowl is tilted and uncovered, unless the operator holds the belt on the tight pulley. The belt shifter must be so located that the operator cannot reach into the bowl while holding the shifter, or
(3) If clutch driven, the clutch lever shall be so arranged that it will move the clutch out of engagement and hold it out while the mixer is tilted or uncovered, unless the operator holds the clutch in engagement. The clutch lever shall be so located that the operator cannot reach into the bowl while holding the lever.
Note: When a push button circuit is used, it is recommended that there should be installed in the circuit a loose fitting piston type inverse time relay designed to open the circuit at the end of one second operation.
Exception: Mechanically fed and discharged horizontal tilting type food mixers in inaccessible locations.
(d) Vertical mixers shall have bowl locking devices of a positive type which require the attention of the operator for unlocking. Devices shall be made available for moving bowls weighing more than 80 pounds, with contents, into and out of the mixing position on the machine.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4543. Guarding of Meat Cutting Band Saw Blades.
A guard for the portion of the blade between the sliding guide and the upper-saw-wheel guard shall be provided which will protect the saw blade at the front and outer side. This portion of the guard shall be self-adjusting to raise and lower with the guide.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4544. Dough Brake.
(a) Rolls on dough brakes shall be guarded when in motion; and
(b) A stop-bar shall be installed at the end of the dough table which, when actuated, will automatically shut off power and apply a brake to the rolls.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4545. Dividers.
(a) Guards at the front of a divider shall be so arranged that the weight of the dough can be adjusted without removing the guard.
(b) The back of the divider shall have a complete cover to enclose all of the moving parts or each individual part shall be enclosed or guarded. The rear cover shall be provided with an interlock so arranged that the machine cannot operate when this cover is open.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4546. Moulders.
(a) Mechanical feed moulders shall be provided with hoppers so designed and connected to the proofer that an employee's hands cannot get into the hopper where they will come in contact with the inrunning rolls.
(b) Hand-fed moulders shall be provided with a belt-feed device or the hopper shall be extended high enough so that the hands of the operator cannot get into the feed rolls. The top edge of such a hopper shall be well rounded to prevent injury when it is struck or bumped by the employee's hand.
(c) There shall be a stopping device within easy reach of the operator who feeds the moulder and another stopping device within the reach of the employee taking the dough away from the moulder.
(d) Where a removable crank is used to adjust the moulder for different sizes of loaf, by adjusting a nut on the moulder drum, brackets shall be provided on the side of the machine for holding the crank when it is not in use.
Note: The brackets should be connected to a limit switch so that when the crank is removed the current is broken and the machine cannot run unless the crank is returned to the resting position on the bracket.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4547. Rotary Dough Kneaders.
(a) Each direct-driven rotary dough kneader shall be equipped with a guard across the entire length of the down-running side of each corrugated kneading roll so arranged and installed that when struck will cause the machine to stop.
(b) All dough kneaders other than those direct driven shall be equipped with a guard across the entire length of the down-running side of each corrugated kneading roll and a device which will quickly disengage the power. The device shall be located so the operator can readily reach it from any working position.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4548. Slicers and Wrappers.
(a) Where necessary to manually push the last loaf through the slicing knives, the operator shall be provided with and shall use a suitable and adequate device by which the loaf can be pushed through the knives without danger to hands or fingers.
(b) The cover over the knife head of reciprocating-blade slicers shall be provided with an electrical control switch so that the machine cannot operate unless the cover is in place.
(c) On slicers with endless band knives, the wiring for the motor shall be so arranged that a brake will be applied each time the motor is shut off, or it shall be so arranged by means of a limit switch that it cannot be run with the side door open. All doors and removable panels to the cutting head shall be either connected to electric switches or shall have no latch openings and be so fastened that they cannot be opened from the outside except through the side door.
(d) When it is necessary to sharpen slicer blades on the machine, a barrier shall be provided leaving only sufficient opening for the sharpening stone to reach the knife blades.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4549. Candy Cutter (Roller Type).
(a) The rolls, or knives of roller and fan type candy cutters, shall be provided with;
(1) a cover or guard, so arranged that the fingers of the operator cannot come in contact with the rollers; and
(2) a safety bar at the infeed side.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4550. Caramel Slitter (Circular Knife Type).
(a) The knives shall be completely covered with an adjustable guard (wire mesh openings not to exceed 1/4 inch)
(b) The material shall be fed through the knives by either;
(1) a feed belt to carry the material under and away from the knives, or
(2) a slide feed set at an incline that will permit the material to pass by gravity against the knives on the intake side and away from the knives on the discharge side.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4551. Nougat Cutter.
A hood shall cover at least the top half of the knife or disc at all times and be so constructed that the cutting operation can be performed without danger to the operator.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4552. Meat, Fish and Other Food Grinders.
(a) Every power-driven food grinder of the worm type shall be so constructed, installed, or guarded that the employee's finger cannot come in contact with the worm. This shall be accomplished by one of the following methods:
(1) A mechanical method of feeding the worm which will prevent an employee's contacting the worm during the feeding operation.
(2) A permanently attached neck to the cylinder enclosing the worm the circular opening of which is not more than 2 1/2 inches in diameter at a point at least 4 1/2 inches above the worm.
(3) A grating of parallel bars permanently attached to the hopper and spaced not more than 1 1/4 inches apart providing the grating is not less than 4 1/2 inches above the worm or more than 1 1/2 inches above the hopper rim. Grilles or gratings attached to pans shall completely cover the hopper opening except for openings in the grille and shall be not more than 1 1/2 inches above the bottom of the pan.
Note: Other types of grilles or gratings are acceptable, provided the greatest dimension in any opening does not exceed 2 1/2 inches, and is located not less than 4 1/2 inches above the worm, or more than 1 1/2 inches above the hopper rim.
(4) A hinged interlocking grille or grating over the hopper or pan which will open the power circuit when the grille or grating is lifted. Such grilles or gratings shall be designed and located as provided in (3) above.
(5) In large hand-fed grinders of the type used in the wholesale or manufacturing trade, where the neck exceeds 2 1/2 inches in diameter and the opening is not guarded by grilles or gratings, the distance from the top of the neck to the worm shall be not less than 36 inches or the minimum accessible distance from the working level to the worm shall be not less than 88 inches.
(6) Any other type of guard or device which will prevent the employee's finger from reaching into the point-of-operation when the machine is in operation.
(b) A pusher shall be provided for each grinder and shall be used during the feeding operation wherever it is possible to increase the safety of the operation. Under no circumstance shall a pusher be used in lieu of the above methods of guarding.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4553. Meat Choppers (Class A).
Knives or choppers shall be enclosed.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4554. Hand-Fed Food Patty Machines.
(a) Feed trays shall be interlocked to stop operation of the machine when the tray is removed, and shall be equipped with a permanently affixed finger guard which will prevent the operator's fingers from coming in contact with the point of operation.
Exception: Machines in which the throat opening to the feeding mechanism is permanently guarded.
(b) The shear and nip point(s) on the discharge side of the machine created by the reciprocating plate and the machine frame in the area of the knockout cup shall be guarded.
(c) Contact with the shear and nip point(s) formed by the reciprocating plate and machine frame at the discharge side of the machine shall be prevented by one of the following means:
(1) By a skirt-type guard on both sides of the reciprocating plate which extends at least 3 inches below the lowest point on the reciprocating plate;
(2) By a full enclosure guard with a manual or automatic means to remove the food patties without employees placing their hands into the danger zone; or,
(3) By any other type of guard or device which will prevent inadvertent finger contact with the shear and nip point(s) when the machine is in operation.
(d) The machine shall be equipped with electrical interlocks which are designed to stop operation when the shear and nip point guards in subsections (b) and (c) are open or have been removed.
Note: A jogging device may be provided where necessary to make adjustments to the machine.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4555. Ice Cubing and Ice Scoring Machines (Class A).
Ice cubing and ice scoring machines shall be enclosed on all sides to a height of not less than six feet.
Exceptions:
1. Machines also enclosed or guarded on top.
2. The necessary openings to feed and discharge the ice.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4556. Ice Breaker or Crusher.
A hopper shall be provided of such size and arrangement that the hand of the operator cannot come into contact with the revolving teeth or prongs while the machine is in operation. If the top of the hopper is less than 42 inches above the floor or working level, a standard railing shall be provided to prevent an employee from stepping or falling into the hopper.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4557. Tobacco Stem Crusher (Class A).
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4558. Cigar Cutter.
(a) The knives shall be provided with a cover that will enclose the knives, or
(b) A feed hopper which completely encloses the knives shall be provided through which the material may be fed without the operator's fingers coming in contact with the knives.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4559. Garbage Disposal Equipment.
(a) All freestanding, counter, or sink mounted disposal units shall have the feed throat guarded so that an employee's hand cannot contact the moving parts. (This does not apply to household type garbage disposals of less than one horsepower.) This shall be accomplished by:
(1) The installation of a hood, grate, shield or offset feed throat which will prevent the employee from reaching directly into the shredding chamber, or
(2) Providing that the distance from the floor or work level up over the counter and down into the point of hazard in the grinder is not less than 88 inches, or
(3) The use of an indirect method of feeding the grinder, such as a water wash or a properly guarded mechanical conveyor, or
(4) By the use of other methods which will prevent employees hands from contacting moving parts.
(b) When a screw conveyor is used to feed the grinder, the screw shall be guarded so that employees cannot contact any nip point created by the flight of the screw. This shall be accomplished by:
(1) Installing the screw in the bottom of a hopper with sides so arranged that the distance from the floor up over the side of the hopper and down to any nip points created by the flight of the screw is not less than 88 inches, or
(2) Guarding the screw by barrier-type guards which will prevent the employee from contacting the screw and still permit entry of garbage, or
(3) By installing a screw with not less than 2 1/4 inches clearance between the housing structure and the metal screw flight. The intervening space may be occupied by a flexible elastomer sheet extension of the screw flight which reaches to a point not closer than 1/4-inch from the conveyor trough or housing. The flexibility of the elastomer portion shall be such that it cannot entrap an employee's hand or fingers. The speed of screw rotation shall not exceed 5 rpm.
(A) A positive emergency stop control system shall be installed and located so that it may be actuated from any position occupied by the operator to stop screw rotation.
Note: The emergency stop control may consist of a spring-loaded bar switch or mushroom buttons.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4565. Extractors.
(a) Extractors shall not be operated at a speed greater than the manufacturer's rating, which shall be stamped on the basket where easily visible, in letters not less than one-quarter inch in height. The maximum permissible speed shall be given in revolutions per minute.
(b) Each individually driven extractor shall be provided with an effective stop and speed limit governor.
(c) The exterior of the basket including hoops or bands shall be inspected at least every six months to determine condition of the basket. The extractor shall be dismantled and the bearings, bearing blocks, and basket shall be inspected at least once a year and all necessary repairs or replacements made. A record of the inspection including the date and name of person who made inspection shall be kept on file in the plant.
Exception: Automatic loading and unloading extractors which are equipped with a full enclosure of sufficient strength to retain the basket in the event of rupture.
(d) Each extractor shall be effectively secured to the floor or foundation so as to eliminate unsafe vibration.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4566. Extractors (Screw Cover Type).
(a) Screw cover type extractors shall be equipped with a metal cover of at least No. 20 gage or its equivalent which shall cover the entire opening to the outer shell and shall be kept in its closed position when the extractor is in motion.
(b) The cover for the revolving container shall be held securely in place by a locknut on the spindle or the container shall revolve in the direction that will tend to tighten the spindle nuts.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4567. Extractors (Automatically Fed and Discharged).
The revolving bowl shall be completely enclosed or guarded to prevent contact during operation.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4568. Extractors (Open Top, Bottom Discharge).
Every extractor equipped with removable plate valve in bottom of shell shall be provided with an interlocking device which will prevent the introduction of the plow into the basket until the plate valve has been removed.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4569. Rolls.
(a) Rolls on all machines which require the continual presence of the operator to feed the machine shall be provided with:
(1) a cover or guard, or
(2) a quick stopping or reversing device which the operator can actuate while in his or her usual work station.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4570. Soap Presses.
Hand fed presses shall be guarded at point of operation, as specified in Section 4208.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4579. Definitions.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4580. Calender Rolls (Not Paper).
(a) Safety trip devices, located not more than 72 inches nor less than 66 inches above the working floor or platform, shall be provided across the front and back of all calenders. The devices shall extend the full length of the face of the rolls and be designed to initiate instantly the process of stopping the calendar when either pushed or pulled.
(b) On each side of all calenders near both ends of the face of the roll there shall be a vertical tight wire cable connecting with the bar tripping mechanism at the top and fastened to the frame within 12 inches of the floor and at a distance of not less than one inch from calender frame.
(c) At the "bite" of in-running open rolls where sheeting, duck or other fabric is fed by hand, a safety bar or cable, connected to the stopping device, shall be placed across the full length of the face of the rolls. It shall be so located that the operator's fingers will trip the stopping device before coming into contact with the bite.
(d) Calender equipment such as windups, idler rolls and cooling drums shall be provided with a safety trip device by which the operator can disconnect the power and stop the equipment in case of emergency.
(e) Mechanical and electrical equipment and auxiliaries shall be installed in accordance with this section and the Electrical Safety Orders.
(f) Safety devices listed in this section shall not be required when a calender is so installed that persons cannot normally reach through, over, under, or around to come in contact with the roll bite or be caught between a roll and an adjacent object.
(g) All trip and emergency switches shall require manual resetting.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4581. Stopping Limits for Calenders.
All calendars, irrespective of the size of the rolls, or their configuration, shall be stopped within a distance, as measured in inches of surface travel, not greater than 1 3/4 percent of the no-load surface speeds of the respective calendar rolls as determined in feet per minute.
Exception: Where speeds above 250 feet per minute as measured on the surface of the drive roll are used, stopping distances of more than 1 3/4 percent are permissible when acceptable to the division. Such stopping distances shall be subject to engineering determination.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4582. Rubber Mills.
(a) Mills shall be provided with a hopper of such size and arrangement that it will protect the operator's hands against inadvertent contact with the in-running nip point of the rolls when feeding material, or
(1) Safety trip rods or tight wire cables for each individual mill shall be provided at front and back of all mills extending the length of the face of the rolls. When either pushed or pulled, they shall immediately initiate the process of stopping the rolls.
Note: Safety rods or cables may be protected against accidental tripping by the stock being processed, provided such protection does not interfere with the purposes of the safety devices.
(2) The normal location of the safety trip over the front roll shall be within two inches in from the edge of the front roll, and not more than 72 inches nor less than 66 inches above the floor or platform on which the operator stands.
(3) The normal location of the safety trip at the back of the mill shall be within two inches in from the edge of the back roll and shall be in the same horizontal plane as the safety trip over the front roll. When rods are used the length of the lever from the fulcrum shall be the same on the front and back of the mill.
Note: Pressure-sensitive body bars may be used in conjunction with safety trip rods or tight wire cables.
(b) After the effective date of these orders, all new mill installations shall not be less than 50 inches above the level on which the operator stands, irrespective of the size of the mill. This distance shall apply to the actual working level, whether it be at the general floor level, in a pit, or on a platform.
(c) All auxiliary equipment such as mill divider, support bars, spray pipes, feed conveyors, strip knives, etc., shall be located in such a manner as to avoid interference with access to and operation of safety devices.
Exception: Safety control devices listed in this section shall not be required when a mill is so installed that persons cannot normally reach through, over, under, or around to come into contact with the roll bite or be caught between a roll and an adjacent object.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4583. Stopping Limits.
(a) All mills irrespective of the size of the rolls or their arrangement (individually or group-driven) shall be stopped within a distance, as measured in inches of surface travel, not greater than 1 1/2 percent of the peripheral no-load surface speeds of the respective rolls as determined in feet per minute.
(b) All measurements on mills and calenders shall be taken with the rolls running empty at maximum operating speed. Stopping distances shall be expressed in inches of surface travel of the roll from the instant the emergency stopping device is actuated.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 1423, Labor Code.
s 4584. Stopping Limits -New Mills.
s 4585. Bale Cutters -Guillotine.
(a) All guillotine bale cutters shall be equipped with a two-hand continuous control, or
(b) A one-hand continuous control so located that the operator cannot reach the control and the point of operation at the same time.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4586. Bevel Cutters -Circular Knife -Nonautomatic.
The circular knife shall be covered with a metal hood which shall guard the cutting edge down to a point not more than one-half inch above the thickest portion of the material being cut. A positive stop shall be provided to prevent the knife from passing the front edge of the table.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4587. Cutter-Sheet Rubber (Horizontal Cutter Type).
The exposed portion of the knife at the sides of the sliding table shall be covered with a metal enclosure (if not of solid type, openings shall not exceed one-quarter inch) so that the fingers of the operator cannot come into accidental contact with the knife when feeding the machine.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4588. Power-Driven Rotary Saws and Slitters (Hand Fed).
A metal hood shall cover the cutting edge to a point not more than one-half inch above the thickest portion of the material being cut.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4589. Tubing Machines.
(a) All hand-fed extrusion machines, including tubing machines, shall be provided with hoppers of such height and size of opening as to make it impossible for the operator's fingers to reach the worm, or
(b) A bar or other device, connected with the switch, so arranged that the operator's fingers cannot reach the worm without first actuating the switch, or
(c) A bar, lever, or other device arranged to be operated by knee, thigh, foot or hand pressure, which will stop the machine.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4590. Tire Machine.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4591. Tube Splicer.
Tube splicers shall be equipped with a two-hand control.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4592. Testing and Maintenance.
(a) The stopping device on each mill and on each calender shall be tested to insure safe operation during each shift.
(b) Each rubber mill in a group of mills driven by a single motor shall be equipped with a safety braking device.
A lamp or other visible signal device shall be automatically actuated when the motor circuit opening switch is in the open position.
Note: The signal devices may be used as indicators to show the proper function of the tripping devices and motor switches.
(c) Each stopping device shall be tested for braking distance once a week by a competent person, and a record of such tests shall be made and kept on file for at least one year. Such records shall be available to the Division or its employees.
(d) The employer shall cause all defects or substandard conditions revealed by the tests to be corrected.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4600. Injection Molding Machine.
Every injection molding machine shall be guarded:
(a) By a sliding gate guard so designed and installed that it interposes a barrier between the dies and the operator before the dies can close and shall be so arranged that if the gate can be opened during the die closing cycle the die motion will be immediately stopped by the opening of the gate.
The sliding gate guard shall extend over the top and to each side of the dies to prevent the operator from placing his/her hands between the dies while they are closing. The danger zone on the side of the machine opposite the operator's working position shall also be guarded, or
(b) By two-handed constant pressure devices or controls which require the simultaneous use of both the operator's hands during the entire die closing cycle.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4601. Thermo-Setting Plastic Molding Presses.
Thermo-setting plastic molding presses shall be guarded by any one of the methods covered in Section 4208.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4625. Pug Mills.
Pug mills shall be guarded by:
(a) A substantial grating with openings not greater than 2 inches, or
(b) A hopper completely encircling the opening through which the machine is fed and extending 18 inches or more above the blades. In no case shall the top of the hopper be less than 36 inches from any floor or working level used by the pugmill operators or attendants.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4626. Wet and Dry Pans, Mullers, Chasers and Similar Mixing and Grinding Mills.
When top of pan is less than 36 inches above charging floor or platform, a standard railing or enclosure shall be provided.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4640. Saws.
(a) All gin stands used in processing field cotton or seed cotton shall be provided with a positive guard which shall be designed to preclude contact with the gin saws while in motion.
Note: The saw blades in the roll box shall be considered guarded by location if they do not extend through the ginning ribs into the roll box when breast is in the out position.
(b) Before accessing lint cleaner saws, the saw cylinder rotation shall be stopped.
(c) Each lint cleaner shall be equipped with a vision panel in the drive covers or guards, unless the drive pulleys are readily visible through the guard material (e.g. expanded metal or wire mesh) to confirm that saw cylinder rotation has stopped. The vision panel or "see-through" guarding material shall permit the employee to observe rotation of the drive pulley spokes. One spoke of the drive pulley shall be of a contrasting color to enhance the employee's ability to readily detect rotation.
(d) Access doors, panels, or covers on lint cleaners which guard or provide access to the lint cleaner saw shall be secured in place by one or more of the following methods:
(1) Padlock(s) or other keyed lock(s); or,
(2) Bolts which have been torqued down and require the use of a tool to remove the bolts; or,
(3) Retainers and/or special fastening devices which require tools to remove; or,
(4) An interlock which is designed to permit access to the saw cylinder(s) only after the saw cylinder has come to a complete stop.
(e) All tools, specialized tools, and keys to locks and/or padlocks used to access lint cleaner saw openings shall be kept in the custody of a qualified person. The qualified person shall provide tools, specialized tools, or keys to the employee after verifying the lint cleaner has been deenergized, locked out and the saw cylinder(s) have stopped rotating.
(f) Employees shall work under the direct supervision of a qualified person while accessing lint cleaner saws.
(g) Warning signs shall be conspicuously posted at each lint cleaner stating that employee access to lint cleaner saws is prohibited until the lint cleaner has been deenergized and locked out from its energy source and saw cylinder rotation has stopped.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4641. Gin Stands, Main Drive and Miscellaneous Drives.
(a) Such drives shall be completely enclosed or guarded by means of standard railings or equivalent protection provided. When guarded by standard railing where the drive approaches the railing by less than 15 inches shield guards shall be installed on the railing extending at least 15 inches beyond the impairment on either side.
(b) V-belt drives within standard railing enclosures shall have the pulleys guarded. The open end of the pulley guard shall be not less than 4 inches from the periphery of the pulleys.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4642. Elevated Platforms and Transmission Enclosures.
(a) Elevated platforms shall be guarded as provided in Section 3210 of these orders.
(b) Where belts, pulleys, chains, sprockets, gears or shafting are within 15 inches horizontally or less than 7 feet above the platform, shield guards as provided in 4641 shall be used in addition to standard railing guards.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4643. Power Drives.
(a) Drives between gin stands shall be guarded. Where complete enclosure of a component is likely to cause a fire hazard due to excessive deposits of lint or other material, only the face section of nip point and pulley guards is required. The guard shall extend at least six inches beyond the rim of the pulley on the in-running and off-running sides of the belt, and at least two inches from the rim and face of the pulley in all other directions.
(b) Drives which are accessible above the shield guard shall be individually guarded.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4644. Warning Device.
A warning device which will sound an audible signal before machinery is started shall be installed in all gins. Such signal shall be intense enough to be heard above the general noise level.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4645. Baler.
An automatic interlock shall be installed on all lint gates so that the tramper cannot operate while the gates are open.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4646. Burr Machines.
Top panels of burr extractors shall be hinged and equipped with a sturdy positive latch.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4647. Screw Conveyors.
All accessible screw conveyors shall be guarded by substantial covers or gratings or with an inverted horizontally slotted guard of the trough type which will prevent personnel from coming into contact with the screw.
Note: Such guards may consist of horizontal bars spaced to allow material to be fed into the conveyor and supported by arches which shall be not more than 8 feet apart.
Exception: Screw conveyors under gin stands shall be considered guarded by location.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4648. Definitions.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4649. Construction and Marking of Cylinders.
(a) All portable cylinders used for the storage and shipment of compressed gases shall be constructed and maintained in accordance with the regulations of the U. S. Department of Transportation 49 CFR Parts 171-179.
(b) Compressed gas cylinders shall be equipped with connections that are approved as defined in Section 3206 of the General Industry Safety Orders.
(c) All cylinders with a water weight capacity of over 30 pounds shall be equipped with means of connecting a valve protection device or with a collar or recess to protect the valve.
(d) Compressed gas cylinders shall be legibly marked, for the purpose of identifying the gas content, with either the chemical or the trade name of the gas. Such marking shall be by means of stenciling, stamping, or labeling, and shall not be readily removable. Whenever practical, the marking shall be located on the shoulder of the cylinder.
Note: This method conforms to ANSI Z48.1-1954(R1971), "Method for Marking Portable Compressed Gas Containers to Identify the Material Contained."
(e) The numbers and markings stamped into cylinders shall not be tampered with.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4650. Storage, Handling, and Use of Cylinders.
(a) Cylinders of compressed gas shall be stored in areas where they are protected from external heat sources such as flame impingement, intense radiant heat, electric arc, or high temperature steam lines.
(b) Inside of buildings, cylinders shall be stored in a well-protected, well-ventilated, dry location, at least 20 feet from highly combustible materials such as oil or excelsior. Assigned storage spaces shall be located where cylinders will not be damaged by passing or falling objects, or subject to tampering by unauthorized persons. Note:Cylinders should be stored in definitely assigned places away from elevators, stairs, or gangways.
(c) Cylinders shall not be kept in unventilated enclosures such as lockers and cupboards.
Exception: Cylinders of fire suppressant gases.
(d) Oxygen cylinders in storage shall be separated from fuel gas cylinders or combustible materials (especially oil or grease) a minimum distance of 20 feet or by a non-combustible barrier at least 5 feet high, or a minimum of 18 inches (46 centimeters) above the tallest cylinder and having a fire-resistance rating of at least one hour.
(e) Compressed gas cylinders shall be stored or transported in a manner to prevent them from creating a hazard by tipping, falling or rolling. Liquified fuel-gas cylinders shall be stored or transported in a position so that the safety relief device is in direct contact with the vapor space in the cylinder at all times.
(f) All cylinders which are designed to accept valve protection devices shall be equipped with such devices when the cylinders are not in use or connected for use.
(g) Unless cylinders are secured on a special truck or rack, regulators shall be removed and valve-protection devices, when provided for, shall be put in place before cylinders are moved.
(h) Compressed gas cylinders in portable service shall be conveyed by suitable trucks to which they are securely fastened; and all gas cylinders in service shall be securely held in substantial racks or secured to other rigid structures so that they will not fall or be knocked over.
Exception: When it is not practicable to transport cylinders by truck, nor to bring in racks to point of operation, as in some construction work, cylinders may be carried in, and properly secured in an adequate manner. For short distances, cylinders may be moved by tilting and rolling them on their bottom edges.
(i) Gas cylinders transported by crane, hoist or derrick must be handled in suitable cradles, nets or skip boxes, and shall never be lifted by magnet or by slings, unless the slings are designed and constructed to prevent accidental release of the cylinders.
(j) Valve protection devices shall not be used for lifting cylinders.
Exception: Valve protection devices may be used for manual lifting if they were designed for that purpose.
Bars shall not be used under valves or valve protection caps to pry cylinders loose when frozen to the ground or otherwise fixed; the use of warm (not boiling) water is recommended. Note:Valve protection devices are designed to protect cylinder valves from damage.
(k) Cylinder valves shall be closed before moving cylinders.
(l) Cylinder valves shall be closed when work is finished.
(m) Valves of empty cylinders shall be closed.
(n) Cylinders shall not be dropped or struck or permitted to strike each other violently.
(o) Cylinder valves not provided with fixed handwheels shall have keys or handles on valve spindles or stems while cylinders are in service. In multiple cylinder installations only one key or handle is required for each manifold.
(p) Leaking regulators, cylinder valves, hose, piping systems, apparatus and fittings shall not be used. Note:(1) Cylinder valves shall not be tampered with nor should any attempt be made to repair them. If trouble is experienced, the supplier should be sent a report promptly indicating the character of the trouble and the cylinder's serial number. Supplier's instructions as to its disposition shall be followed. Note:(2) Complete removal of the stem from a diaphragm-type cylinder valve shall be avoided.
(q) Cylinders shall never be used as rollers or supports, whether full or empty.
(r) Cylinders must not be placed where they might form part of an electric circuit.
(s) No one shall use a cylinder's contents for purposes other than those intended by the supplier.
(t) Acetylene shall never be brought into contact with unalloyed copper, except in a blowpipe or torch.
(u) When flammable gas lines or other parts of equipment are being purged of air or gas, open lights or other sources of ignition shall not be permitted near uncapped openings.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4651. General.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4652. Low Pressure Cylinders.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4653. Hydrostatic Testing.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4654. High-Pressure Cylinders.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4657. General.
(a) Compressed gas cylinders, portable tanks, and cargo tanks shall have pressure relief devices installed and maintained in accordance with Compressed Gas Association Pamphlets S-1.1-1963 and 1965 addenda and S-1.2-1963. Types of safety relief devices as covered by this section are designated as follows:
(1) Type CG-1: Frangible disc.
(2) Type CG-2; Fusible plug or reinforced fusible plug utilizing a fusible alloy with yield temperature not over 170 <> F, nor less than 157 << degrees>> F (165 <> F nominal).
(3) Type CG-3; Fusible plug or reinforced fusible plug utilizing a fusible alloy with yield temperature not over 220 <> F, nor less than 208 << degrees>> F (212 <> F nominal).
(4) Type CG-4: Combination frangible disc-fusible plug, utilizing a fusible alloy with yield temperature not over 170 <> F, nor less than 157 << degrees>> F (165 <> F nominal)
(5) Type CG-5: Combination frangible disc-fusible plug, utilizing a fusible alloy with yield temperature not over 220 <> F nor less than 208 << degrees>> F (212 <> F nominal).
(6) Type CG-7: Safety relief valve.
(7) Type CG-8: Combination safety relief valve and fusible plug.
(b) All safety relief devices covered by this section shall meet the design, construction, marking and test specification of the "Compressed Gas Association Safety Relief Device Standards Part I -Cylinders for Compressed Gases: S1.1- 1963."
s 4658. Relief Devices.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4659. Handling and Storage.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4660. Refilling.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
s 4663. General.
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code. (continued)