Washington Administrative Code › Title 296 - Labor and Industries, Department of › Chapter 296-304 - Safety standards for ship repairing, shipbuilding and shipbreaking › Section 296-304-07011 - Use of gear

Current through Register Vol. 24-14, July 15, 2024
(1) Loads must be
			 safely rigged before being hoisted.
(2) Plates must be handled on and off hulls
			 by means of shackles whenever possible. Clips or pads of ample size must be
			 welded to the plate to receive the shackle pins whenever there are no holes in
			 the plate. When it is not possible to make holes in or to weld pads to the
			 plate, alligator tongs, grab hooks, grab clamps or screw clamps may be used. In
			 such cases special precautions must be taken to keep employees from under such
			 lifts.
(3) Tag lines must be
			 provided on loads likely to swing or to need guidance.
(4) When slings are secured to eyebolts, the
			 slings must be so arranged, using spreaders if necessary, that the pull is
			 within 20 degrees of the axis of the bolt.
(5) Slings must be padded by means of wood
			 blocks or other suitable material where they pass over sharp edges or corners
			 of loads so as to prevent cutting or kinking.
(6) Skips must be rigged to be handled by not
			 less than 3 legged bridles, and all legs must always be used. When open end
			 skips are used, means must be taken to prevent the contents from
			 falling.
(7) Loose ends of idle
			 legs of slings in use must be hung on the hook.
(8) Employees must not be permitted to ride
			 the hook or the load.
(9) Loads
			 (tools, equipment or other materials) must not be swung or suspended over the
			 heads of employees.
(10) Pieces of
			 equipment or structure susceptible to falling or dislodgement must be secured
			 or removed as early as possible.
(11) An individual who is familiar with the
			 signal code in use must be assigned to act as a signalman when the hoist
			 operator cannot see the load being handled. Communications must be made by
			 means of clear and distinct visual or auditory signals except that verbal
			 signals must not be permitted.
(12)
			 Pallets, when used, must be of such material and construction and so maintained
			 as to safely support and carry the loads being handled on them.
(13) A section of hatch through which
			 materials or equipment are being raised, lowered, moved, or otherwise shifted
			 manually or by a crane, winch, hoist, or derrick, must be completely opened.
			 The beam or pontoon left in place adjacent to an opening must be sufficiently
			 lashed, locked or otherwise secured to prevent it from moving so that it cannot
			 be displaced by accident.
(14)
			 Hatches must not be opened or closed while employees are in the square of the
			 hatch below.
(15) Before loads or
			 empty lifting gear are raised, lowered, or swung, clear and sufficient advance
			 warning must be given to employees in the vicinity of such
			 operations.
(16) At no time will an
			 employee be permitted to place himself or herself in a hazardous position
			 between a swinging load and a fixed object.
TABLE E-1
DIMENSIONS AND SPACING OF WOOD INDEPENDENT-POLE SCAFFOLD
				MEMBERS
Structural Members
Light duty (Up to 25 pounds per square
						  foot)
Heavy duty (25 to 75 pounds per square
						  foot)
Height in feet
Height in feet
< 24
>24<40
40<60
<24
>24<40
40<60
Poles or uprights (in inches) ..........
2x4
3x4 or 2x6
4x4
3x4
4x4
4x6
Bearers (in inches) .....
2x4
2x6
2x6
2x8
2x8
2x10
Ledgers (in inches) .....
2x6
2x6
2x6
2x8
2x8
2x8
Stringer (not supporting bearers) (in inches)
						  ..........
1x6
1x6
1x6
1x6
1x6
1x6
Braces (in inches) ......
1x4
1x6
1x6
1x6
1x6
1x6
Pole spacing-longitudinally (in feet) ............
7 1/2
7 1/2
7 1/2
7
7
7
Pole spacing-transversely (in feet) ............
6 1/2 min
7 1/2 min
8 1/2 min
6 1/2
10
10
Ledger spacing-vertically (in feet) . . . .
7
7
7
4 1/2
4 1/2
4 1/2
TABLE E-2
SPECIFICATIONS FOR SIDE RAILS OF LADDERS
Length (in feet)
Cross section (in inches)
At ends
At center
15 ..............
1 7/8 x 2 3/4
1 7/8 x 3 3/4
16 ..............
1 7/8 x 2 3/4
1 7/8 x 3 3/4
17 ..............
1 7/8 x 3
1 7/8 x 4
18 ..............
1 7/8 x 3
1 7/8 x 4
20 ..............
1 7/8 x 3
1 7/8 x 4 1/2
24 ..............
1 7/8 x 3
1 7/8 x 4 1/2
TABLE E-3
SPECIFICATIONS FOR THE CONSTRUCTION OF HORSES
Structural Members
Height in feet
<10
>10>16
16<20
Inches
Inches
Inches
Legs ..................
2x4
3x4
4x6
Bearers or headers
2x6
2x8
4x6
Crossbraces ............
2x4 or 1x8
2x4
2x6
Longitudinal braces ......
2x4
2x6
2x6
TABLE E-4
SAFE CENTER LOADS FOR SCAFFOLD PLANK OF 1,100 POUNDS FIBRE
				STRESS
[Codification note: The graphic presentation of this table has
				been varied in order that it would fall within the printing specifications for
				the Washington Administrative Code. The following table had lumber dimensions
				in the table heading typed in vertically across the page while the remainder of
				the table was typed horizontally on the page. The "Span in Feet" materials (6
				through 16) which ran top to bottom has been switched to run left to right on
				the page. The "Lumber dimensions in inches" which ran left to right on the page
				has been switched to run top to bottom on the page.]
Lumber dimensions in inches
Span in Feet
6
8
10
12
14
16
A-2 x 10
B-1 5/8 x 9 1/2
256
192
153
128
110
...
A-2 x 12
B-1 5/8 x 11 1/2
309
232
186
155
133
116
A-3 x 8
B-2 5/8 x 7 1/2
526
395
316
263
225
197
A-3 x 10
B-2 5/8 x 9 1/2
667
600
400
333
286
250
A-3 x 12
B-2 5/8 x 11 1/2
807
605
484
404
346
303
(A)-Rough lumber.
(B)-Dressed lumber.
TABLE G-1
NUMBER AND SPACING OF U-BOLT WIRE ROPE CLIPS
Improved plow steel rope diameter inches
Number of Clips
Drop forged
Other material
Minimum spacing (inches)
* ..........
...
...
1/2 ........
3
4
3
5/8 ........
3
4
3 3/4
3/4 ........
4
5
4 1/2
7/8 ........
4
5
5 1/4
1 ...........
4
6
6
1 1/8 ........
5
6
6 3/4
1 1/4 ........
5
7
7 1/2
1 3/8 ........
6
7
8 1/4
1 1/2 ........
6
8
9
*Three clips shall be used on wire size less than
						  1/2-inch diameter.
TABLE G-2
MAXIMUM ALLOWABLE WEAR AT ANY POINT OF LINK
Chain size in inches
Maximum allowable wear in fraction of inches
1/4 (9/32) ............................
3/64
3/8 ..................................
5/64
1/2 ..................................
7/64
5/8 ..................................
9/64
3/4 ..................................
5/32
7/8 ..................................
1/64
1 ...................................
3/16
1 1/8 ................................
7/32
1 1/4 ................................
1/4
1 3/8 ................................
9/32
1 1/2 ................................
5/16
1 3/4 ................................
1/32
Statutory Authority:
				  RCW
				  49.17.010,
				  49.17.040,
				  49.17.050,
				  49.17.060 and chapter 49.17 RCW.
				  12-24-071, § 296-304-07011, filed 12/4/12, effective 1/4/13. Statutory
				  Authority:
				  RCW
				  49.17.010,
				  49.17.040,
				  49.17.050, and
				  49.17.060. 03-04-099, §
				  296-304-07011, filed 2/4/03, effective 8/1/03; Order 74-25, §
				  296-304-07011, filed 5/7/74.