RIGGING GUIDELINES Lifting Equipment Policy

Proper equipment is to be used to off-load cargo (i.e., slings and shackles of adequate size, manufactured pallet bars and casing hooks, etc.).

Off-Loading Policy

Pipe bundles are not to be off loaded from a supply vessel under any circumstances if any of the following conditions exists:

• Pipe bundle has slings that have only a single wrap around the pipe bundle,

• Pipe bundle has short slings, which result in a crane hook angle of more than 30 degrees.

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• Pipe bundle has slings around the pipe bundle, which is more than 25% of the pipe length from the end of the pipe bundle.

Sling Rigging Policy

Slings that have a plastic covering are not to be used under any circumstances. Covering may allow corrosion to occur which can go undetected.

Tubular Off-Loading Guidelines

Dependent on the size of tubular, utilize the following sling arrangements:

• 30" Use only slings attached to shackles, 1 joint per lift maximum

• 20" Use only casing hooks, 1 joint per lift maximum

• 13-3/8" " Use only casing hooks, 2 joints per lift maximum

• 9-5/87" Use only casing hooks, 2 joints per lift maximum

• 5" Use either casing hooks or slings, 4 joints per lift maximum Use pre--slung, reasonable number of joints (or smaller)

Note: Pre-slung bundles are to have two slings, each having two wraps around the pipe with a minimum of five pipe joints per bundle for sizes up to and including 5".

Note: Pre-slung bundles for casing larger than 5" up to 7" casing is to have a minimum of four joints per bundle.

Note: Do not pre-sling casing 7" and larger.

General Rigging Guidelines

1. Use manufactured pallet bars to lift pallets (i.e., not styles made at the rig site.).

2. Lift a maximum of two pallets at a time and do not exceed 6 ft in height (i.e., total for two pallets).

3. Use slings with the same number of legs as the number of straps on the bags to lift big bags.

Connect all bag straps individually to the sling legs.

Note: Do not shackle together the bag straps on the same sling leg and do not lift a bag unless using all straps on the bag to share the load between straps.

4. Off-load only one bag per lift.

5. Leave bags that have damaged straps on the supply vessel.

6. Use a four-leg sling arrangement for lifting cargo containers and baskets.

7. Shackle each sling leg to the designated lifting padeyes on cargo containers and baskets.

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8. Use slings, chains, and links that are adequate for the particular lift.

9. Use the Tables at the end of this section for additional information and specifications.

• Table No. I - Wire Rope Sling Safe Working Loads

• Table No.2 - Chain Sling Safe Working Loads

• Table No.3 - Master Link Safe Working Loads

• Table No.4 -Installation of Wire Rope Clips Cargo Transportation Guidelines

1. Ensure cargo containers are the primary method for transporting drums. Drums should be placed on and secured to pallets inside of a cargo container for forklift capability.

Note: Removing drums from a basket is difficult and hazardous.

Note: In critical or emergency situations and if a cargo container is not available, sling only one drum at a time per lift using proper drum hooks.

2. Transport gas bottles (i.e., oxygen, acetylene, nitrogen, etc.) using a proper bottle rack which has a single point lifting padeye.

Note: Do not transport loose gas bottles.

3. Only transport radioactive and explosive materials in proper containers that are made specifically for such material.

Sling Rigging Guidelines

1. Calculate the safe working load of slings by dividing the catalog breaking strength of the lifting gear by a Safety Factor.

2. Use the following to determine which Safety Factor applies.

Operation Safety Factor

Wire Rope Slings 5.0

Chain and rigging tackle 3.5

Personnel baskets 10.0

3. Calculate the load per sling leg by dividing the total vertical load by number of slings then dividing again by the cosine of the lift angle (i.e., angle between slings at crane hook).

4. Ensure that the slings are of sufficient length so that the maximum angle between the slings at the crane hook is 60 degrees for containers, etc. and a maximum of 30 degrees for bundled pipe (i.e., 50 ft sling lengths for 40 ft pipe bundles and 40 ft sling lengths for 30 ft pipe bundles).

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Note: If the sling leg length equals or exceeds the horizontal distance between load attachment points (i.e., padeyes), the lift angle is 60 degrees or less.

5. Locate each sling leg a distance equal to 15 percent of the bundled pipe length when lifting a pipe bundle (i.e., 6 ft. from the end for 40 ft pipe joints).

6. Use wire rope slings.

Note: Wire rope slings break one strand at a time whereas chain slings break with little or no warning. Also, chains are less resistant to shock loading.

7. Use galvanized wire rope when possible.

8. Ensure that galvanized chain is not used in offshore environments as the strength deteriorates to some unknown value over time.

9. Use wire rope choker hitches that utilize a slip through or reeve eye thimble.

10. Only use sliding choker hooks that are of the safety latch design.

11. Do Not use a safety shackle through a soft-line eye to make a hitch connection.

12. Ensure that sling hooks as well as crane hooks have a fail safe hook latch.

13. Ensure loads engage fully about the throat of the hook and that point loading does not occur for the sling on the crane hook.

14 Use shackles that are either the screw type or pin-bolt-nut type.

Note: Loads, which have permanently dedicated shackles, are to have a cotter pin outside the shackle nut.

15. Use casing hooks that are self-tightening with a pressure lock and manual release.

Note: If open type hooks are necessary, use an interconnecting pull line longitudinally between the hooks.