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s 6344. Log Hauls.
(a) Log conveyors shall be solidly built, kept in good repair, and of sufficient strength to support five times the maximum load.
(b) Log conveyor bull chains or cables shall be designed and built with an adequate safety factor.
(c) The return strand of chain log conveyors in the basement shall be guarded so that in the event of breaking, they cannot fall on anyone beneath.
(d) Log conveyor controls shall be identified and arranged to be operated from a position where the operator is in the clear of logs, machinery, lines, and rigging.
(e) A positive stop or bulkhead shall be installed on all log conveyors to prevent logs traveling too far ahead in the mill.
(f) Employees shall not work under logs which are being hoistedto the log deck.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6345. Decks.
(a) Where deck saws are provided, they shall be arranged so that they do not project into any walkway or aisle.
(b) In existing installations where the deck saw is located so that it blocks the entrance to the log haul runway, the entrance doorway shall be guarded by a substantial timber or an automatic bar or gate operated by the saw frame to close the entrance while the saw is in operation.
(c) When a stationary chain saw is used, either at the pond or log deck, the top run of the chain shall be guarded.
(d) Log decks shall be provided with adequate chocks, chains, or other safeguards, to prevent logs from accidentally rolling down the deck and onto the carriage or its runway, or off the yard end of the deck.
(e) A barricade or other positive stop shall be erected at the mill end of the log deck to protect the sawyer from rolling logs. Such barricade or stop shall be of sufficient strength to stop any log.
(f) Where scaling is done on the log deck, the scaler shall be protected by some means of stopping all log moving equipment in the immediate vicinity.
(g) Loose chains from overhead canting gear or other equipment shall not be allowed to hand over the log deck in such a manner as to create a hazard.
(h) Employees shall not cross or work on log decks where they are likely to be struck by rolling logs.
(i) Deck surfaces shall be kept reasonably clean.
(j) A clear walkway along the upper side of the log deck and around the head rig shall be provided. An overhead walkway or underpass may be substituted.
(k) When it is necessary to cross log hauls or chutes, overhead grablines shall be installed.


Note: Authority cited: Section 142.3 Labor Code. Reference: Section 142.3, Labor Code.





s 6346. Barkers.
(a) Mechanical barking devices shall be guarded to protect employees from flying objects.
(b) Logs shall not be removed from the barker until the barking head has ceased to revolve, unless the barker is designed, arranged, or located so that the barking head will not create a hazard to employees.
(c) The elevating ramp, or gate, shall be provided with a safety chain and hook, or other positive means of suspension, for use while employees are working under the gate.
(d) Hoop barriers, or other adequate means strong enough to contain a whipping log, shall be installed on both sides of ring barkers.
(e) Steel barriers, or other positive means of stopping a rolling or thrown log, shall be installed between the operator and revolving head barkers where the operator is exposed to this hazard.
(f) Hydraulic barkers shall be enclosed with strong baffles at the inlet and the outlet. The operator shall be protected by at least five-ply laminated glass, or material of equivalent strength.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6347. Sawyer.
(a) Positive means shall be provided for securing the sawyer's control levers in neutral position when not in use.
(b) All control levers, except those on steam or shotgun feed, shall be arranged so that when released they will return to the neutral position.
(c) Carriage control levers shall be guarded against interference from moving objects.
(d) The sawyer shall be protected from flying chips and knots.
(e) An audible signal device, mirror, or other means shall be used for transmitting signals between the sawyer, offbearer, and setter where logs may be of such size as to block visibility.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.





s 6348. Carriages.
(a) Carriages shall be substantially constructed, kept in proper adjustment, and floored or decked over to afford secure footing where employees are required to ride.
(b) The sheaves on rope-driven carriages shall be guarded at the floor line with substantial housings. Sheaves of cable operating rope-feed setworks and setworks pinion, at the rear of the carriage head blocks, shall be guarded in a similar manner.
(c) On a shotgun-fed carriage drive, the following are required:
(1) Valves on shotgun feeds shall be positively secured before the sawyer leaves the station. The use of leaking steam valves or piping on saw carriage drives is prohibited. Adequate provision shall be made to prevent the carriage from creeping.
(2) When steam boilers are located above the shotgun feed, provision shall be made for preventing condensation from collecting in the shotgun feed cylinder.
(3) Heads of shotgun cylinders shall be substantially blocked.
(4) Means shall be provided whereby the sawyer or other members of the head rig crew may stop the head saw, in an emergency.
(d) When the mill is shut down, the carriage on shotgun feed mills shall be positively secured at the end of the run.
(e) Where employees ride the carriage, and the distance from the rear edge of the carriage to the wall of the building is not more than 18 inches, the side wall shall be boarded over smoothly to a height of no less than 6 feet 6 inches above the carriage platform, and for at least the length of the carriage travel. Where overhead knee braces or timbers come to within 6 feet 6 inches above the carriage platform, such braces or timbers shall be boarded over smoothly for the length of the carriage run. No roof truss, roof timber, or other projection shall be located less than 6 feet 6 inches above the platform on any carriage.
(f) Where a walkway is provided behind the carriage, there shall be no less than a 4-foot clearance between the rear of the carriage and the building wall, unless guardrails or barriers are provided to eliminate possible contact with the moving carriage.
(g) The carriage run, if exposed, shall be protected by a guardrail of the same height as the carriage platform, the rail to be of 1 1/4-inch pipe or 2-inch by 4-inch lumber. The guardrail shall clear the carriage blocks when they are in their rear position.
(1) Doors which lead to a passageway at the end or side of the carriage run shall be provided with standard guardrails opposite the doorways. A warning sign shall be posted at the entrance of such doorways.

(2) Where employees ride the carriage, a substantial spring or a pneumatic stop shall be installed at each end of the carriage travel. Riderless carriages shall be provided with substantial stops to protect employees in the vicinity of the ends of the carriage run.
(3) Substantial sweeps of metal, wood, or other suitable material shall be provided in font of the wheels at each end of the carriage. The sweeps shall extend to within 1/4-inch of the rails.
(h) Where a steam-operated, Hill-type log-turning device is used, carriage knees shall be provided with goosenecks, unless the carriage crew is otherwise protected against climbing logs.
(i) Logs which are not long enough to reach at least two carriage blocks shall not be sawn on carriages.
(j) Dogging devices shall be adequate to secure logs, cants, or boards during sawing operations.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.






s 6349. Band Saws.
(a) Band saws 7 inches or wider shall not be run at speeds in excess of the manufacturer's recommendation.
(b) When the saws are repaired, remanufactured, or retensioned to change their operating speeds, they shall be tagged, painted, marked or otherwise flagged to indicate the new safe operating speed.
(c) Saws that develop a crack greater than one-tenth the width of the saw shall be repaired or replaced.
(d) Saws shall not be continued in use on the head rig after they have been reduced 30 percent in width. They may be used for other purposes if properly conditioned. They shall not be circumferentially welded together to increase their width, except by a manufacturer.
(e) Guides shall be kept in proper conditions and alignment at all times.
Note: For band saws less than 7 inches wide, see Section 4310 of the General Industry Safety Orders, Title 8, California Administrative Code.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.





s 6350. Band Saw Wheels.
(a) Every band wheel shall be carefully inspected at least once a month for defects; proper repairs shall be made, or the wheel removed from service.
(b) A band wheel in which a crack is found shall be immediately discontinued from service until properly repaired.
(c) Band wheels 7 inches or wider shall have a minimum rim thickness of 5/8- inch if made of cast iron, or 1/2-inch if of cast steel, or equivalent material, except for a distance no more than 1-inch from the edge of the wheel.
(d) No band wheel saw shall be run at a peripheral speed in excess of that recommended by the manufacturer.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.





s 6351. Guarding Head Saw.
(a) Band wheels shall be encased or guarded, except for the lower front quadrant on the off bearing side of the upper wheel where the blade leaves the wheel and the blade itself from that point down to the lower point of support or guide. The guard shall be constructed of no less than No. 7 gauge steel plate, or of wood. If wood is used, the guard shall be of at least 2-inch boards, secured to frame members no less than 2 inches by 4 inches.
(1) The opening in the upper band wheel guard shall be no larger than 12 inches horizontally toward the center of the wheel, and 6 inches vertically above the point of contact of the blade with the wheel.
(2) Suitable ventilating ports no larger than 2 inches by 4 inches shall be permissible.
(3) Every band mill shall be equipped with a saw catcher or rest of substantial construction.
(4) Saw hoists shall have brakes and an upper travel limit switch.
(b) Band resaws and rip saws shall be guarded as provided in (a). Vertical feed rolls exposed to contact shall be guarded on the sides and in front by an enclosure extending to within 1/2-inch of the surface of the work passing through the rolls. Horizontal feed rolls exposed to contact shall be enclosed by a cover over the front and open sides. The lower edge of the cover shall come down to a point within 1/2-inch of the surface of the work passing through the rolls.
(c) Provisions shall be made for alerting and warning employees before starting band head saws, and measures shall be taken to ensure that all persons are in the clear.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6352. Circular Head Saws.
(a) Circular head saws shall not be operated at speeds in excess of 10,000 peripheral feet per minute, unless specially tensioned and recommended by the manufacturer for the higher speeds, in which case the saw shall be distinctively marked to indicate the higher speed.
(b) When saws are repaired, remanufactured, or retensioned to change their operating speeds, the saw shall be tagged, painted, marked, or otherwise flagged to indicate the new operating speed.
Note: The following table shows revolutions per minute of saws operated at the rim speed of 10,000 feet per minute:
Diameter of Diameter of
saws, inches R.P.M. saws, inches R.P.M.
8........... 4,774 46 830
9........... 4,244 48.......... 800
10.......... 3,819 50.......... 764
11.......... 3,472 52.......... 734
12.......... 3,183 54.......... 707
14.......... 2,728 56.......... 682
16.......... 2,387 58.......... 658
18.......... 2,122 60.......... 636
20.......... 1,910 62.......... 616
22.......... 1,736 64.......... 597
24.......... 1,592 66.......... 579
26.......... 1,469 68.......... 562
28.......... 1,364 70.......... 546
30.......... 1,273 72.......... 530
32.......... 1,193 74.......... 516
34.......... 1,123 76.......... 502
36.......... 1,061 78.......... 490
38.......... 1,005 80.......... 477
40.......... 955 82.......... 465
42.......... 910 84.......... 455
44.......... 868




Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.





s 6353. Guarding Head Rigs.
(a) Where rock saws are provided, the upper portion of the saw shall be guarded.
(b) Wherever practicable, the rock saw shall be provided with an exhaust hood.
(c) Circular headrigs shall be equipped with safety guides which permit adjustment without the use of a wrench or other hand tool.
(d) Brackets or edging support shall be provided between the saw and the side of the husk or frame.
(e) Circular headrigs shall have horizontal clearance from the side of the saw to the nearest post of the husk frame. Horizontal clearance shall be 1-inch greater than the vertical distance between the saw collar and the cutting edge of the saw.
(f) The opening in the off-bearing side between the husk and the saw shall be guarded.
(g) There shall be a hood or canopy over the upper saw of every double circular head saw.
(h) There shall be a guard over the saw of single circular head saws.
(i) Splitters shall be used on all circular headsaws, unless the dogging and turning of logs and cants are done by mechanical means and the roll cases are power-driven.

Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.





s 6354. Guarding.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.





s 6355. Splitter.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.





s 6356. Circular Saw Crack.
Circular saws shall be inspected for cracks each time the teeth are filed or set. Any circular saw found to have developed a crack equal to the following table shall be repaired or replaced.
Length of Crack Saw Diameter
1/2-inch........ 12 inches
1-inch.......... 24 inches
1 1/2-inch...... 36 inches
2-inches........ 48 inches
2 1/2 inches.... 60 inches
3 inches........ Over 60 inches




Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.





s 6357. Live Rolls and Roll Cases.
(a) Employees shall not cross over or pass through gaps in moving sorting chains, green chains, cross conveyors, roll conveyors, or bridge rolls, except where crossovers or walkways are provided.
Exception: Decked-over green chains or sorting chains.
(b) Stops or guides shall be installed where necessary to prevent lumber from running off conveyors.
(c) The space between live rolls for a distance of at least one roll on either side of crossovers or runways shall be filled in with materials to support a load of 250 pounds applied at any one point.
(d) The use of spike rolls is prohibited, either in mill or yards. Rough shaker rolls are permitted where no employees are exposed to contact.
(e) No employees shall ride a moving sorting chain or similar type of equipment.
(f) No less than 24 inches of the head saw roll case shall be joined to the husk.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.





s 6358. Edgers.
(a) Edgers shall be housed with a guard of No. 8 gauge metal plate, or material of equivalent strength, to close the openings in the end frames, cover the top, and guard the front and back as far down as is practicable.
(b) On edgers equipped with automatic setworks, the circuits which control the saw setting mechanism shall be interlocked with the pressure rolls and the edger picker in such a manner as to prevent shifting of the saws while there is stock in the edger. In the event of power failure, the saws and picker should lock in position without shifting.
(c) All edgers with saw arbors mounted below the feed rolls shall be equipped with an anti-kickback device installed on the in-feed side, designed and maintained to be effective for all thicknesses of materials. The tips of the fingers shall be hardened and kept sharp. See Edger Anti-kickback Device Plate in Appendix A.
Exception: Edgers having counter rotating arbors which are mounted above and below the feed rolls and act in conjunction with constant pressure hold down rolls.
Note: This may not apply when the location of the edger renders the use of these devices unnecessary.
(d) All edgers with saw arbors mounted above the feed rolls shall be equipped with effective anti-kickout devices or barriers located on the outfeed side of the edgers.
(e) Edgers shall not be located in the main roll case behind the head saws. They shall be offset at least 6 feet the husk or mill side of the roll cases.
(f) The pressure roll on edgers shall not be raised while stock is being run, or when any person is in line with the saws.
(g) The edgerman shall not raise feed rolls or fingers while standing in front of the edger, or reach between saws while the edger is in operation.
(h) The edgerman shall not put hands on cants being run through the edger after the cant has become engaged by feed rolls.
(i) Live rolls in back of the edger shall operate at a speed no less than the speed of the edger feed rolls.
(j) Tables in back of the edger shall be kept clear of cants, edging, and obstacles that impair processing.
(k) Saws shall not be sharpened on the arbors or changed, until the machine is positively disconnected from the power and cannot be started without the knowledge of the employee doing the sharpening.
( l) A controlling device shall be installed and located so that the operator can stop the feed mechanism without releasing the tension of the pressure rolls.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.





s 6359. Jump, Underhung, and Overhead Swing Saws.
(a) All saws shall be effectively guarded above and below the table or roll case.
(b) Stops shall be installed to prevent timber from being thrown off the roll case.
(c) A positive stop shall be installed to prevent the saw from passing the front edge of the roll case, guard, barrier, or table. The throat in the table or roll case shall be only wide enough to permit unobstructed operation of the saw.
(d) Foot-treadle operated saws shall have a treadle guard fastened over the treadle. A safety block shall be placed under the treadle while adjustments are being made.
(e) Swing cutoffs saws shall be provided with an effective device that automatically returns the saw to the back of the table when the saw is released at any point in its travel; such device shall not depend upon a fiber rope for its proper functioning.
(f) If a counterweight is used on overhead swing saws, all bolts supporting the bar and weight shall be provided with cotter pins. A bolt shall be put through the extreme end of the bar to prevent dropping the weight; where the weight does not enclose the bar, a safety chain shall be attached to prevent dropping.
(g) If an overhead counterweight and arm are used, the arm shall be provided with a safety chain or chains to prevent the counterweight falling if the arm breaks.
(h) Swing cutoff or trim saws shall not be located so that they operate directly in line with stock coming from the edger.
(i) Saws that are fed by other than hand power shall be so designed that they can be locked, or rendered inoperative to unauthorized persons.
(j) Swing saws on log decks shall be equipped with a positive stop for the protection of persons who may be on the opposite edge of the log haul chute.
(k) Tables or roll casings for swing saws shall be provided with stops or line-up rail to prevent material being pushed off the opposite side.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6360. Slasher Saws.
(a) Substantial guards of no less than 2-inch planking, heavy wire mesh mounted in a steel frame, or the equivalent, shall be placed in front of gang slasher saws. A second barricade of planking 2 inches or thicker, or its equivalent, shall be provided at the rear of the saws and constructed to provide full protection to anyone working or passing in the rear of the saws. If end saws are on passageways, they shall be guarded against contact.
(b) Slasher saw feed chains shall be arranged so that they can be controlled from the spotter's station.
(c) Slasher feed chains shall be stopped while employees are on the slasher feed table, unless the operator is stationed at the feed chain control.
(d) The slasher should be fenced off at the end opposite the operator.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6361. Underhung and Drop Trimmer Saws.
(a) Trimmer saws shall not be run at a rim speed in excess of the manufacturer's recommended speed.
(b) Gang trimmer saws shall be guarded in front by a flat or round steel framework with a rigid metal screen or light iron bars attached thereto, or by wood baffles no less than 2 inches and securely bolted to a substantial frame or equivalent means.
(c) Front guards for a series of saws shall be set as close to the top of the trimmer table as is practical, considering the type of machine and the material being cut. The end saws on these trimmers shall be either guarded or railed off wherever employees are exposed to contact.
(d) The rear of the saws shall have a stationary or swinging guard of no less than 2-inch wood material, or equivalent, the full width of the saws and extending as much as possible to protect all persons at the rear of the trimmer.
(e) Push, pull, or two-saw trimmers shall be arranged so that the operator may make trim adjustment without coming close to the saw; or shall be provided with hood guards that cover the saw at all times, at least to the depth of the teeth. The guard should adjust itself automatically to the thickness of the material being cut, and remain in contact with the material at the point where it encounters the saw. That part of the saw located below the table shall also be enclosed.
(f) Automatic trimmer saws shall be provided with safety stops or hangers to prevent saws dropping below their sawing position.
(g) Saws shall not be propped up at quitting time, or for the convenience of the filers, until they have completely stopped. All controls shall be locked while the saws are filed.
(h) Trimmer feed chains shall be stopped while employees are on the trimmer feed table.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6362. Gang Saws.
(a) Cranks, pitman rods, and other moving parts shall be shielded from contact by the frame of the machine or by adequate guards.
(b) The drive mechanism to the feed rolls shall be completely enclosed.
(c) Carriage cradles of whole-log gang saws shall be of adequate height to prevent logs kicking out while being loaded.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6363. Hog Mills.
(a) To minimize jamming, hog mills shall be provided with feed chutes and conveyors designed to handle the material being processed.
(b) Chutes shall be arranged so that the distance from any place on the rim to the cutter knives is no less than 40 inches.
(c) The feed chutes shall be provided with suitable baffles, screens, or barriers which shall prevent material being thrown from the mill, unless the mill is located so that thrown material is not a hazard.
(d) The top rim of the chute shall extend no less than 36 inches above the floor or working platform, unless the chute opening is protected by other adequate means.
(e) Employees feeding or tending hog mills shall be provided with and required to use safety belts and lines, unless they are otherwise protected from falling into the mill.
(f) All conveyor-fed hog mills shall be equipped with a trip bar or emergency stop located where employees can readily reach it to immediately stop the conveyors.
(g) A metal detector shall be installed whenever possible.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6364. Wood Chippers.
(a) Wood chippers shall be provided with a feed throat extending not less than 36 inches from the knives, and the minimum access distance from the ground or other working level to the knives (measured vertically and horizontally) shall not be less than 88 inches.
(b) Chippers shall be provided with a swinging baffle at the mouth of the chipper or hopper, a screen between the chipper and operator, or some other means of protecting employees from material thrown back by the chipper knives.
(c) All conveyor-fed chippers shall be equipped with a trip bar or emergency stop located where employees can readily reach it to immediately stop the conveyor.
(d) A metal detector shall be installed whenever possible.
(e) Access covers or doors shall not be opened until the drum or disk is at a complete stop. A permanent plate carrying this instruction shall be attached in a prominent place on or near the covers or doors.
(f) Employees feeding or tending chippers shall be provided with and required to use safety belts and lines, unless the employees are otherwise protected from falling into the chipper.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.





s 6365. Conveyors.
(a) Troughs in which the working strands of a conveyor operate shall be of ample dimension and strength to carry a broken chain, and shall afford effective protection to all employees.
(b) Return strands of all conveyors that are within 7 feet of the floor and subject to contact by employees shall be provided with a trough guard.
(c) Return strands of conveyors higher than 7 feet and located over or near passageways or work areas shall have rollers or guards underneath that effectively protect employees.
(d) When the working strands of conveyors cross within 3 feet of the floor level in passageways, they shall be completely enclosed or bridged over along the full length of the exposure.
(e) Elevated slab or wood conveyors shall have sidewalls of ample height to prevent material being thrown from the conveyor. In lieu of this, the area under the conveyor may be fenced off.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6366. Stationary Tramways and Trestles.
(a) Tramways and trestles shall have substantial mud sills or foundations which shall be frequently inspected and kept in repair. When vehicles are operated on tramways and trestles which are used for foot passage, traffic shall be controlled, or there shall be provided a walkway with standard handrails at the outer edge and shear timber on the inner edge. The walkway shall be wide enough to allow adequate clearance for vehicles. When walkways cross over other thoroughfares, they shall be solidly fenced at the outer edge to a height of 42 inches over such thoroughfares.
(b) Stationary tramways and trestles shall have a vertical clearance of 22 feet above railroad rails. When constructed over carrier docks or roads, they shall have a clearance of 6 feet above the driver's footrest on the carrier, and in no event shall this clearance be less than 12 feet above the roadway. In existing operations where it is impractical to obtain such clearance, telltales, electric signals, or other precautionary measures shall be installed.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6367. Dry Kilns.
(a) Dry kilns shall be constructed upon solid foundations to prevent tracks from sagging. Transfer car, kiln car, and dolly tracks shall be maintained in good repair and condition at all times.
(b) Transfer, kiln car, and dolly tracks shall not have a grade steeper than 1 1/4 percent, and shall be provided with substantial bumpers or stops to prevent cars from running off the ends of the rails.
(c) When loaded kiln cars are standing on inclined track, the wheels shall be effectively blocked.
(d) Where tram or kiln cars are gravity-traveled, effective mechanical braking devices shall be used.
(e) Track grades in kilns shall not exceed 15 inches in 100 feet, unless a winch and line are used for snubbing and pulling the cars to or from the kiln.
(f) Each kiln car shall be equipped for easy attachment and detachment to transfer cables.
(g) An adequate means shall be provided for chocking cars.
(h) Tracks shall be clear before cars are shunted into the unstacker.
(i) Cars shall not be moved while employees are in the bight of transfer lines.
(j) Stickers shall not be allowed to hazardously protrude.
(k) Dry kilns shall be provided with suitable walkways. Each kiln shall have a door easily operated from the inside, or a special exit door operated from the inside shall be located in or near the main loading doors.
( l) A clearance of no less than 18 inches shall be maintained between loaded cars and the walls of the kilns.
(m) Main kiln doors shall be provided with a method of holding them open while the kiln is loaded. To prevent toppling, adequate means shall be provided to firmly secure the main doors when they are disengaged from carriers and hangers.
(n) Pickup and unloading points and paths for lumber packages on conveyors transfers, and other areas where accurate spotting is required, shall be plainly marked and wheel stops provided where necessary.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.





s 6368. Fuel Houses, Chip Bins, and Hoppers.
(a) Fuel houses shall be provided with at least two exits.
(b) Fuel houses, chip bins, and hoppers shall be constructed or equipped with tunnels, chains, mechanical diggers, vibrators, or other effective means of removing the material so that employees are not required to work where there is a possibility of being trapped in a cave-in.
(c) Platforms and walkways shall be provided where employees work over material stored in fuel houses. They shall be constructed as required in the General Industry Safety Orders.
(d) No employee shall leave the walkways or protected areas in fuel houses, bins and hoppers, without wearing an approved safety belt and a line attended by another employee.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6375. Barking and Peeling Pits.
(a) Hooks used for handling logs shall be equipped with hand holds and kept in good repair.
(b) Spiked hooks without a bell shall not be used.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6376. Veneer Lathe.
(a) The area under the elevating ramp (tipple) from the lathe to stock trays, shall be provided with railings or other suitable means of preventing employees from entering.
(b) A positive means shall be provided and used to prevent the back-up roll from closing until activated by the operator.
(c) A guard or positive interlock and necessary hydraulic or air controls shall be provided to prevent forward movement of the charger, if such movement is hazardous.
(d) Positive means shall be provided to hold the head in the open position while servicing the knife.
(e) A protective device for the knife edge shall be provided for transporting the knife.
(f) Where there is a hazard from exploding logs, both lathe operator's and charger operator's stations shall be protected against flying slabs and chips.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6377. Veneer Slicer.
The veneer slicer knife shall be guarded at front and rear to prevent accidental contact with the knife edge.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6378. Veneer Clipper.
(a) Clippers shall be provided with a guard on both in-feed and out-feed sides to protect the operator and helper.
(b) Each operating treadle for veneer clippers shall be covered by a treadle guard.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6379. Tray System.
The tray system shall be equipped with controls at each end so that the system cannot be operated unless both switches are in the one position.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6380. Core Saws.
All unused portions of band saws or circular saws used to trim panel core shall be guarded.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6381. Veneer Glue Spreaders.
(a) Spreaders shall be equipped with an automatic stopping device which will stop the spreader rolls when contact is made with the device.
Note: A roll-release device is recommended.
(b) Spreader cleanup persons shall be prohibited from cleaning the rolls from the in-feed side while the machine is running.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6382. Veneer Presses.
(a) Hot-press hoists shall be provided with a braking and holding mechanism which will operate automatically in case of failure of the lifting chains or cables.
(b) On a hot-press equipped with an automatic charger, an electrically interlocked gate or chain shall be provided across the opening between the charger and the press which, when opened, will open the circuit to prevent the charger from moving.
(c) Where two workers are employed in loading the press, closing control devices shall be provided within reach of each work station. These devices shall interconnect so that activation of both controls is required to operate the press. A quick-opening device shall be provided at each work station on the press hoist platform.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6383. Stripsaw.
An anti-kickback device and hood guard shall be provided on the veneer stripsaw.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6384. Patch Machine.
The patch machine shall be guarded to prevent the operator's hands entering the punch area, and the foot treadle shall be guarded.


Note: Authority cited: Section 142.3 Labor Code. Reference: Section 142.3, Labor Code.



s 6385. Veneer Chipper.
The top feed roll shall be equipped with a guard, and a shield or panel shall be provided on the operator's side to prevent contacting the roll.
Note: See Section 6364, Chippers.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.







s 6386. Edge Gluer Jointer.
(a) A barrier shall be installed at the end of the travel of the head to prevent flying splinters from injuring personnel.
(b) A gate shall be installed to prevent access between the edge gluer jointer and the grasshopper, arranged so that when the gate is opened, all electricity, air, and hydraulic lines will be shut off and the cylinders bled.
(c) A device shall be positioned across the front of the in-feed nip point, arranged to shut off the equipment if contact is made with it.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6387. Sanders.
Wide-belt sanders shall be equipped with anti-kickback devices, and a barrier at the in-feed side adjusted to prevent more than one panel entering the sander at a time.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6388. Scissors Lift.
For purposes of cleaning and repair, all scissors lifts, regardless of size, shall be provided with mechanical means of supporting the lift in a raised position, independent of the hydraulic system.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6395. Shingle Saws.
(a) Shingle saws shall have a metal guard covering the edge of the saw to at least the depth of the teeth, except for the part of the cutting edge that is essential for sawing.
(b) A die piece shall be substantially attached to this rim guard, on the side next to the sawyer. In lieu of this, both sides shall be guarded up to the part which must be left open to clear the stock, provided the front and back guards extend 6 inches beyond the points of the teeth.
(c) When a bolt is not in the cut, a wood or metal guard should be secured to the sliding table at the side nearest the sawyer to protect from contact with the cutting edge of the saw.
(d) The bottom spault catcher shall be no less than 1/4-inch thick, and kept sharp at all times.
(e) Shingles saws, when reduced in size to less than 40 inches in diameter, shall no longer be used as shingle saws.
(f) Such reduced shingle saws may be reconditioned for use as clip saws, provided the surfaces are reground and the proper balance attained.
(g) Clip saws shall be entirely housed, except for the operating edge.
(h) All clip saws shall be provided with an approved metal bar guard above the operating edge of the saw, and clipper board finger guard.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6396. Hansen Saws.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.






s 6397. Bolter and Equalizer Saws.
(a) Bolter and equalizer saws shall be provided with guards of 1-inch wood or equivalent material. The guard shall be secured to the carriage and entirely cover the saw disc when the carriage is in the loading position. Wipers shall be installed on both sides of the saw.
(b) A device shall be provided to automatically return, secure and hold the carriage in the neutral position.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.






s 6398. Knee Bolter Saw.
Knee bolter saws shall be provided with guards of 2-inch wooden or equivalent material secured to the carriage. Guards shall entirely cover the saw disc when the carriage is in the loading position. The saw shall be located so that there is no hazard of flying materials, or a barricade of no less than 2-inch planking shall be placed at the rear of the saws.


Note: Authority cited: Section 142.3, Labor Code. Reference:Section 142.3, Labor Code.



s 6399. Shingle Jointer.
The front or cutting face of knife-type shingle jointers shall be fully guarded, except for a narrow slot through which the shingles may be fed against the knives.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6400. Circular Shake Saws.
(a) An effective splitter shall be installed behind the shake saw.
(b) A canopy guard shall be installed over the top of the shake saw. This may be a 2-inch by 6-inch timber of a length equal to the diameter of the saw, and of a height to clear the moving pats of the carriage.
(c) Grooving or edging saws shall be completely protected against contact, except for that portion against which the stock is fed.
(d) That portion of all such saws which is below and behind the saw table shall be effectively guarded. Hinged or removable doors or gates will be permitted where necessary for machine adjustment and oiling.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6401. Lath and Shingle Mills.
Lath mills shall be arranged so that stock pickers are protected from slabs and blocks that come from the slasher and trimmers.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



s 6402. Bolters and Lath Machines.
(a) Bolters and lath machines shall be provided with a shield of no less than 2-inch wood or equivalent material and built in front of the machines.
(b) Lath bolters and lath mill saws shall be provided with a metal hood guard no less than 1/8-inch thick. These hoods may be hinged so that they can be turned back to permit changing the saws.
(c) A substantial metal plate baffle, finger device, or other acceptable device shall be installed to prevent kickbacks.
(d) Feed rolls and feed mechanisms shall be arranged so that it is not necessary to push the stock through the machine. The feed rolls shall not be raised while any employee is in line with the saws.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.



Appendix A Radio Control Signaling Devices
Radio equipment at cable logging sites which is used primarily for voice communication shall be assigned a frequency separate from radio equipment used primarily to: initiate whistles and other audible signaling devices; control any machine, material handling device, or other equipment hazards to workers.
Frequencies at 72.44, 72.48, 72.52, 72.56, 72.60, 75.44, 75.48, 75.52, 75.56, 75.60, 154.57 and 154.60 megahertz (MHz) are to be retained for channels using coded modulation to provide secure signalling for the purpose of activating signalling devices and machine functions in cable logging with a maximum one half watt output. Voice transmission on these radio frequencies will be limited to emergency situations only.
All radio devices that are tone coded for signal and/or machine functions or used for voice communications, shall meet or exceed the following requirements, specifications, tolerances and tests:
(1) Transmitters and receivers shall be Federal Communications Commission (FCC) type accepted and certified.
(2) Radio coded systems which activate audible signals or machine functions shall transmit and decode only on authorized codes.
(3) The receiver tone signaling threshold sensitivity shall be .35 micro-volt or better to initiate the signal function.
(4) The receiver spurious attenuation shall be no less than 50 dB.
(5) The receiver selectivity shall be more than 60 dB at the adjacent channel.
(6) In tone coded systems the receiver decode tone frequency stability shall not exceed plus or minus ( + ) .006 (.6 percent) of the assigned tone frequency.
(7) In tone coded systems, the transmitter encoder tone frequency stability shall not exceed plus or minus ( + ) .006 (.6 percent) of the assigned tone frequency.
(7.5) In systems which use coded modulation other than tone coding, tolerances on modulation/code parameters shall be such as to guarantee security against code falsing and/or interference with systems of the same or different coding format.
(8) Radio systems (transmitters and receivers) shall operate in accordance with the specifications over an ambient temperature range of minus 30 ° C to plus 60 ° C.
(9) Switches of transmitters used to send whistle signals or activate equipment associated with high lead, slackline, or skidder systems of logging shall be designed so that two buttons, motions, or a combination of these are required simultaneously to cause activation of the system. Arrangement of the activating switches shall be such that the operator can transmit signals easily by the use of either hand, but cannot easily activate the transmitter accidentally.

(10) All receivers intended to be mounted on or in the yarder or similar equipment shall continue to operate satisfactorily and shall suffer no mechanical damage after being subjected to a series of no less than 10 impacts in each plane (total 30). Each impact shall be no less than 20 g acceleration.
(11) All receivers intended for mounting in the yarder or similar equipment, and all portable transmitters, shall continue to maintain specified mechanical and electrical performance during and after being subjected to vibration of the magnitude and amplitude as prescribed in ANSI/TIA/EIA-603-1992, Section 3.3.4, Vibration Stability, which is hereby incorporated by reference.
(12) All portable transmitters shall continue to maintain specified mechanical and electrical performance after being subjected to the following test:
The equipment shall be dropped once on each of 5 surfaces from a height of 4 feet.
(13) At least one model of each radio system shall be tested, and certified that it meets or exceeds the minimum requirements for performance specified in this Appendix. The model shall be selected at random from stock.


Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.





Appendix A
Whistle -Signals

The following standard signals shall be adopted and used for the type of operation listed. If a standard signal is not listed to cover an unusual or new situation, a new signal may be adopted and used for that specific situation.
HIGH-LEAD LOGGING WHISTLE SIGNALS


1 short........................... Stop all lines
3 short -3 short.................. Ahead slow on mainline
3 short........................... Ahead on mainline
2 short........................... Ahead on haulback
2 short -2 short.................. Ahead slow on haulback
3 short -1 short.................. Ahead on strawline
3 short -1 short -3 short......... Ahead slow on strawline
4 short........................... Slack mainline
2 short -4 short.................. Slack haulback
3 short -1 short -4 short......... Slack strawline
3 short -2 short.................. Tight line
3 short........................... When rigging is in:strawline
back on haulback
3 short plus "X" number of When rigging is in: Indicates
shorts..........................
number of sections of
strawline back on rigging
3 short -1 short -2 short......... Strawline back on rigging
1 short........................... When rigging is in: Chaser inspect
and repair rigging
2 short........................... When rigging is in: No chokers back
2 short -1 short plus "X" number Number chokers back
of shorts.......................
2 short -4 short.................. When rigging in: Slack haulback -
hold all lines until 2 short blown
3 medium.......................... Hooker
3 medium -4 short................. Hooker and his crew
5 long............................ Climber
4 long............................ Foreman
1 long -1 short................... Start or stop work
7 long -2 short................... Man injured, call transportation and
stretcher
1 long -1 short repeated.......... Fire


GRABINSKI SYSTEM


2 short -1 short.... Slack mainline and haulback together
2 long.............. Take off or put on rider block


SLACK LINE WHISTLE SIGNALS


2 short -2 short -2 short........ First cable up when road has been
changed and tail hold made fast
2 short -2 short -2 short........ Drop skyline
1 short.......................... Stop any moving line
1 long........................... When logging, slack skyline
2 short.......................... Ahead on skyline
1 long -2 short.................. Ahead easy on skyline
3 short.......................... Ahead on skidding line,
holding haulback
3 short -3 short................. Ahead easy on skidding line
with slack haulback
4 short.......................... Slack skidding line
2 short -2 short -repeated Ahead easy on haulback with
once...........................
slack skidding line
2 short -2 short................. Ahead on haulback
2 short -2 short -4 short........ Slack haulback
2 short -pause -3 short.......... Pick up skyline and skid
2 short -pause -2 short -2 Pick up skyline and skid
short..........................
3 short -1 short................. When carriage is in: strawline
back on haulback
3 short -1 short -2 short........ When carriage is in: strawline
back on carriage
3 short -1 short................. When strawline is out: ahead on strawline
3 short -2 short................. Tight line
3 short -1 short -4 short........ Slack strawline
3 short -1 short -3 short........ Pull easy on strawline
2 long........................... Ahead on transfer
2 long -4 short.................. Slack transfer
2 long -2 short -2 short......... When carriage is in: transfer
back on carriage
1 long -1 short.................. When carriage is in: number of coils
2 short -2 short -1 or more short When carriage is in
spaced.........................
number of chokers
1 short.......................... When carriage is in: inspect rigging,
repair, and send back
2 short -2 short -4 short........ When carriage is in: slack haulback
and hold all lines until 1 short
is blown; then send back
3 short -3 short................. When carriage is in: send back powder
5 medium......................... Tail rigger
5 medium -4 short................ Tail rigger and his crew (continued)