OAR 437-007-0635
Shackles

(1)

Shackle pin diameter must be:

(a)

1⁄8- inch larger than the indicated shackle size for shackles up to 1 3⁄4 inches.

(b)

1⁄4- inch larger than the indicated shackle size for shackles 1 3⁄4-inch up through 3 inches.

(2)

Replacement shackle pins must meet the manufacturer’s original specifications for strength and design for the size of shackle being used.

(3)

Shackle pins and nuts must be replaced when the threads are worn or stripped.

(4)

Worn shackle pins must be replaced when the original diameter is reduced by 15 percent.

(5)

The opening size between the jaws of shackles used to hang blocks, jacks, rigging, and join or attach lines, cannot be more than 1-inch greater than the size of the line, swivel, shackle, or similar device to which it is attached.

(6)

Safety pins must secure shackles used to hang blocks, jacks, or rigging on trees, anchor guylines and join guyline or deadman strap eyes.
Figure 7-7 — Shackle — Safety Pin [Figure not included. See ED. NOTE.]

(7)

When skylines are attached with a shackle using a knockout pin, the pin must be one size larger than the skyline and secured with a molly, latchpin, or cotterkey. (See Figures 7-8 and 7-9.)

(8)

Sleeve shackles or choker bells must be used where choked lines are permitted.
Figure 7-8 — Shackle — Sleeve with Knockout Pin
Figure 7-9 — Shackle — Bell with Knockout Pin
Figure 7-10 — Skyline Attachments with Knockout Pins
Figure 7-11 — Shackle — Sleeve with Safety Pin [Figures not included. See ED. NOTE.]

(9)

When a line is passed around an anchor without the use of a strap, the shackle pin must be inserted through the line eye and the “U” part of the shackle placed around the bight of the line.

(10)

Sleeve shackles must not be used to join two or more eyes together.

(11)

A flush pin, straight-sided shackle must be used to connect the eyes of lines if:

(a)

The shackle will be crossed by a sheave; or

(b)

A sheave will be crossed by the shackle.
Figure 7-12 — Shackle — Flush Pin, Straight Side [Figure not included. See ED. NOTE.]

(12)

When shackles are crossed by carriages, the pin must be facing the landing.

(13)

Shackles used to join three or more lines must be hung with the:

(a)

Pin through the single eye.

(b)

“U” part through two or more line eyes.

(14)

When attaching a guyline, mainline, or skyline eye to two or more strap eyes, the:

(a)

Shackle pin must be placed through the guyline, mainline, or skyline eye.

(b)

“U” part of the shackle must be placed through the strap eyes.

(15)

After a strap is passed around an anchor and the two eyes are contained in the “U” part of the shackle, the angle created by the strap eyes must not be greater than 90 degrees.
Figure 7-13 — Shackle — Straps within 90 Degrees [Figure not included. See ED. NOTE.]
NOTE: If the angle created by the strap eyes is greater than 90 degrees, the strap is too short. The shackle containing the strap eyes should be hung at least half the diameter of the anchor away from the anchor.

(16)

Shackles used to connect tipping plate anchor lines to the eye of a guyline, mainline, or skyline must be:

(a)

1⁄8-inch larger than the largest line.

(b)

Rated for a load equal to or greater than the expected working load.

(c)

Large enough to accommodate all line eyes.

(17)

Shackles attached to tipping plate anchors must have the shackle pins inserted through the anchor pad-eyes.

(18)

A shackle must have a rated breaking strength greater than the rated breaking strength of the line that they are used with.

(19)

The manufacturer’s rated breaking strength of shackles must be used in determining oversize requirements when the make, size and steel classification of the shackle can be identified.

(20)

Shackles listed in Tables 7-4, 7-5 and 7-6 must be made of alloy steel which develops 120,000 PSI ultimate tensile strength or better.
NOTE: Shackles sizes are listed for extra improved plow steel wire rope.

(21)

The minimum size of shackles required to hang or attach single sheave blocks or jacks are shown in Table 7-4.
Table 7- 4 — Bell Shaped and Sleeve Shackles Used to Hang or Attach Single Sheave Blocks or Jacks [Table not included. See ED. NOTE.]

(22)

The minimum size of shackles required for joining or attaching lines are shown in Table 7-5.
Table 7-5 — Bell Shaped and Sleeve Shackles Used to Join or Attach Lines [Table not included. See ED. NOTE.]

(23)

The minimum size of flush pin straight-sided shackles for joining or attaching skyline extensions are shown in Table 7-6.
Table 7-6 — Flush Pin Straight-Sided Shackles Used for Attaching Skyline Extensions [Table not included. See ED. NOTE.]
[ED. NOTE: Figures and Tables referenced are available from the agency.]

Source: Rule 437-007-0635 — Shackles, https://secure.­sos.­state.­or.­us/oard/view.­action?ruleNumber=437-007-0635.

437‑007‑0001
Authority of Rules 437‑007‑0002
Purpose of Rules 437‑007‑0003
Scope of Rules 437‑007‑0004
Applicability of Rules 437‑007‑0010
Worker Protection Standard 437‑007‑0025
Definitions 437‑007‑0100
Safety and Health Program 437‑007‑0105
Management Commitment 437‑007‑0110
Supervisory Responsibilities 437‑007‑0125
Accident Investigation 437‑007‑0130
Employee Involvement 437‑007‑0135
Hazard Identification and Control 437‑007‑0140
Training 437‑007‑0145
Annual Program Evaluation 437‑007‑0200
Site Planning and Implementation 437‑007‑0205
Hazard Identification 437‑007‑0210
Checking System 437‑007‑0215
Working Alone 437‑007‑0220
Medical Services and First Aid 437‑007‑0225
Working Near Unstable Objects and Danger Trees 437‑007‑0230
Power Line Safeguards 437‑007‑0235
Working Conditions 437‑007‑0240
Night Logging 437‑007‑0245
Field Sanitation For Reforestation Activities 437‑007‑0300
General Requirements 437‑007‑0305
Head Protection 437‑007‑0310
High-Visibility Color 437‑007‑0315
Eye and Face Protection 437‑007‑0320
Hand Protection 437‑007‑0325
Leg Protection 437‑007‑0330
Foot Protection 437‑007‑0335
Hearing Protection 437‑007‑0340
Personal Floatation Devices 437‑007‑0345
Respiratory Protection 437‑007‑0350
Respiratory Protection When Machines Are Operated 437‑007‑0400
Hand and Portable Power-Driven Tools 437‑007‑0405
Chain Saws 437‑007‑0410
Fire Extinguishers 437‑007‑0415
Explosives and Blasting Agents 437‑007‑0500
Roads 437‑007‑0505
Bridges 437‑007‑0510
Flagging 437‑007‑0515
Signs 437‑007‑0520
Vehicle General Requirements 437‑007‑0525
Vehicle Warning Devices 437‑007‑0530
Vehicle Windshields, Windows and Mirrors 437‑007‑0535
Vehicle Passenger Compartments 437‑007‑0540
Vehicle Brakes 437‑007‑0545
Vehicle Exhaust Systems 437‑007‑0550
Vehicle Guards and Controls 437‑007‑0555
Vehicle Safety Chains 437‑007‑0560
Vehicle Seat Belts 437‑007‑0565
Vehicle Inspection, Maintenance and Repair 437‑007‑0570
Vehicle Operation 437‑007‑0575
Transportation of Personnel 437‑007‑0580
Flammable and Combustible Liquids 437‑007‑0600
Inspection and General Requirements for Rigging 437‑007‑0605
Out-of-Service Requirements for Wire Rope 437‑007‑0610
Line Cutting and Splicing 437‑007‑0615
Pressed Eyes and End Fittings 437‑007‑0620
Cable Clamps 437‑007‑0625
Mollies 437‑007‑0630
Connectors 437‑007‑0635
Shackles 437‑007‑0640
Metal Spar Guyline Safety Straps 437‑007‑0645
Chokers and Straps 437‑007‑0650
Guylines — General Requirements 437‑007‑0655
Guylines — Tail Tree Guying 437‑007‑0660
Intermediate Support Trees 437‑007‑0665
Anchoring 437‑007‑0670
Spiking and Releasing Spiked Guylines or Skylines 437‑007‑0675
Selecting, Preparing and Rigging Trees 437‑007‑0680
Blocks and Hanging Blocks. 437‑007‑0690
Metal Towers 437‑007‑0700
General Work Practices 437‑007‑0705
General Machine Operator Requirements 437‑007‑0710
General Machine Requirements 437‑007‑0715
Attaching and Spooling Line (Wire or Synthetic Rope) 437‑007‑0720
Fairleads 437‑007‑0725
Securing Machines. 437‑007‑0730
Loading Machines 437‑007‑0735
Chippers 437‑007‑0740
Machine Exhaust Systems 437‑007‑0745
Windows and Windshields on Machines 437‑007‑0750
Drum Brakes 437‑007‑0755
Machine Travel Brakes 437‑007‑0760
Outriggers 437‑007‑0765
Hauling or Moving Machines 437‑007‑0770
Protective Structure for Operators, General Requirements 437‑007‑0775
Protective Structure For Operators, Machines Manufactured On Or After July 1, 2004 437‑007‑0780
Protective Structures for Operators, Machines Used On Or After July 1, 2014 437‑007‑0800
General Requirements 437‑007‑0805
Mechanical Falling 437‑007‑0810
Manual Falling 437‑007‑0815
Wedges 437‑007‑0820
Bucking Trees/Logs 437‑007‑0825
Tree Jacking 437‑007‑0830
Tree Pulling 437‑007‑0900
General Landing Work Practices 437‑007‑0905
Landings 437‑007‑0910
Landing Logs 437‑007‑0915
Log Decks 437‑007‑0920
General Cable Yarding and Ground Skidding Work Practice 437‑007‑0925
Cable Yarding Work Practices 437‑007‑0927
Working Near Standing Tree Anchors, and Tail/Intermediate Support Trees 437‑007‑0930
Grapple Yarding 437‑007‑0935
Operation of Ground Skidding Machines and Vehicles 437‑007‑0940
Signaling and Communications 437‑007‑0945
Electrical Signal Systems 437‑007‑0950
Voice Communication on Combined Signal/Voice Transmitters 437‑007‑1000
General Requirements 437‑007‑1005
Loading 437‑007‑1010
Securing Loads for Transport 437‑007‑1015
Binders and Wrappers 437‑007‑1020
Log Truck General Requirements 437‑007‑1025
Log Truck Safety Chains or Cables 437‑007‑1030
Log Truck and Trailer Hitches (Couplings) 437‑007‑1035
Log Truck and Trailer Brakes 437‑007‑1040
Log Truck Trailer Reaches and Drawbars 437‑007‑1045
Log Truck Trailers 437‑007‑1050
Log Truck and Trailer Bunks and Stakes 437‑007‑1055
Log Truck and Trailer Bunk Chains and Cables 437‑007‑1060
Additional Requirements for Log Trucks Equipped With Self-Loaders 437‑007‑1100
General Work Practices 437‑007‑1105
General Requirements for Log and Wood Fiber Unloading, Handling and Storage Areas 437‑007‑1110
Wrappers Removal General 437‑007‑1115
Barriers For Securing Log Loads 437‑007‑1120
Removing Wrappers From Barrier Secured Loads 437‑007‑1125
Removing Wrappers From Machine Secured Loads 437‑007‑1130
Removing Center Wrappers From Unsecured Loads 437‑007‑1135
Unloading Logs 437‑007‑1140
Split Loads 437‑007‑1145
Loading or Unloading Trailers 437‑007‑1150
Trailer Hoists 437‑007‑1155
Dry Land Log and Fiber Handling and Processing 437‑007‑1160
Water Dumps, Log Ponds and Booms 437‑007‑1165
Boats 437‑007‑1200
Helicopter Operation 437‑007‑1205
Aircraft Refueling/Maintenance Area 437‑007‑1300
Scope of Rules 437‑007‑1303
Application of Rules 437‑007‑1305
General Requirements 437‑007‑1310
Personnel Assignments 437‑007‑1315
Single Personnel Assignments 437‑007‑1320
Personal Protective Equipment 437‑007‑1325
Training 437‑007‑1330
Equipment, Vehicles and Machines, General Requirements 437‑007‑1335
Vehicle Operation 437‑007‑1340
Machine Operation 437‑007‑1345
Helicopter Operations 437‑007‑1400
Jerk Wire Whistle System 437‑007‑1405
Radio Signal Systems 437‑007‑1500
Tree Climbing General Requirements 437‑007‑1505
Climbing Equipment General Requirements 437‑007‑1510
Climbing Procedures General Requirements 437‑007‑1515
Rigging Trees for Cable Logging Systems 437‑007‑1520
Four Inch Tie-In Systems 437‑007‑1525
Belayed (Snubbing) Climbing System 437‑007‑1530
Three Point Climbing System 437‑007‑1535
Storage and Transportation of Climbing Equipment General Requirements
Last Updated

Jun. 8, 2021

Rule 437-007-0635’s source at or​.us