pass the word tubing block warnings and use …€¦ · tubing block warnings and use limitations...

Copyright © Gunnebo Johnson IncorporatedAll rights Reserved

GUNNEBO JOHNSON CORPORATION 1240 NORTH HARVARD AVE.TULSA, OK 74115 USA 800-331-5460 www.gunnebojohnson.com

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INFORM A RIGGER -- PASS THE WORD

Tubing Block Warnings and Use LimitationsThis document contains warnings and use limitation information applicable to Gunnebo Johnson Corporation Tubing Blocks and is furnishedwith all Gunnebo Johnson Corporation tubing block shipments. Tubing Block distributors and rig manufactures must pass on this informationin their warnings and use limitation literature where Gunnebo Johnson Corporation Tubing Blocks are involved.

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Each employer shall furnish to each of his employeesemployment and a place of employment which are free fromrecognized hazards that are causing or are likely to cause deathor serious physical harm to his employees. -OSH Act of 1970;General Duty Clause, Section 5 Duties (a)(1).

Each employee shall comply with occupational safety andhealth standards and all rules, regulations, and orders issuedpursuant to this Act which are applicable to his own actions andconduct - OSH Act of 1970; General Duty Clause, Setion 5Duties (b).

• ALWAYS inform yourself….Ask your employer for tubingblock safe use instruction.Companies and contractors should establish safe use proceduresfor handling and operating drilling equipment and train workersin how to follow those procedures. Training program shouldinclude general worksite procedures in addition to individualjob specific requirements.

Employee training programs should include informationavailable in training courses, educational programs, and trainingmaterials and resources offered by the OSHA Directorate ofTraining and Education and found on OSHA website www.osha.gov/dte/index.html, and API RP 8B RecommendedPractice and this document.

NEVER use a tubing block without training…Trainingreinforces responsible work practice.

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ALWAYS comply with applicable regulations…SelectiveFederal, State and Maritime regulations may govern worksiteactivity.

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Land based oil and gas drilling operations are regulated byCompany Policies and Procedures, and may be regulated byselective Federal and State OSHA regulations, The Jones Actand Maritime Law.

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The maximum required drill string pulling force shall be withinthe rated load of the tubing block and must be known fordetermination of proper reeving and rigging of the tubing block.

• NEVER use tubing block without legible load rating marking.

Each item of hoisting equipment shall be marked with loadrating/pressure rating. -API 8C section 10.2.

Example: A PSL 1 travelling block with a load rating of 150short tons, manufactured by Gunnebo Johnson is marked asfollows: GJC 150 ton API 8C, PSL 1.

ALWAYS know maximum required pulling force...Avoid tubingblock failure.

NEVER overload a tubing block…Understand Working LoadLimits

•Overload can cause tubing block failure or permanent damage.Maximum tubing block Work Load Limit (Rated Load) is validonly when all tubing block sheaves are reeved.

NEVER ride on a tubing block or other drill string equipment…Avoid death or injury.

•All employees shall be kept clear of tubing block during drillstring pulling operation.

NEVER rig a tubing block to a derrick or drill stringimproperly… Avoid drill string disengagement and tubing blockdamage.

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Each item of hoisting equipment shall be marked with "API Spec8C", the manufacture's name or mark, the relevant PSL numberand the rating specified in 10.2. Additional markings shall beapplied in accordance with Section 9 and 10.4 - API 8C section10.1.



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For inspection categories and recommended inspectionfrequency for the critical load carrying components of GunneboJohnson tubing blocks, see pages 3-7.

Tubing block shall not:

• be allowed to “two- block”, • be unsymmetrically reeved, • be used with reeving off lead greater than

2.5 degrees, • be severely shock loaded, • be used with elevator links unlatched, • be used with hook locking device disengaged, • have load line terminated to top hood.

Elevator links shall be centered in the base (bowl/saddle) of thehook to avoid improper loading and the hook latches shall besecured to avoid disengagement.

NEVER use a worn-out or damaged tubing block…Avoidstructural or mechanical failure.

•In accordance with API RP 8B, Recommended Practice forProcedures for Inspections, Maintenance, Repair, andRemanufacture of Hoisting Equipment, it is recommended thatthe owner or user of the equipment develop his own schedule ofinspections based on experience, manufacture'srecommendations, and consideration of one or more of thefollowing factors: environment; load cycles; regulatoryrequirements; operating time; testing; repairs; andremanufacture.

For disassembly and assembly instructions to conduct internalinspection and make repairs of Gunnebo Johnson tubing blocks,see pages 8-10.

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Drill string pulling above 75% of the Working Load Limit(WLL), at temperatures between the service temperature given onthe identification tag and -40 degrees F, must be done at a slowand steady rate to avoid stress spikes common in normal drillstring pulling dynamics.

75% of theWLL must not be exceeded, when drill string pullingin temperatures below -40 degrees F.

NEVER use a tubing block in alkaline or acidic conditions.

Gunnebo Johnson Corporation Tubing Blocks shall not be used inalkaline or acidic conditions. Resulting metal embrittlement andaccelerated corrosion can cause sudden failure.

•

Additional drill string pulling precautions are required below theservice temperature given on the identification tag because coldtemperature begins to affect the tubing block material properties.

Tubing blocks shall not be heated above 180 degrees F. Tubingblock Working Load Limit is valid between 180 degrees F andservice temperature given on the identification tag with normaldrill string pulling precautions.

NEVER use tubing block in extreme temperatures…Suddenfailure can occur.

Inspection Category and Frequency ScheduleThe user/owner of the Gunnebo Johnson Corporation (GJC)Tubing Block should a develop an inspection schedule based onexperience, GJC recommendations, and one or more of thefollowing factors: environment; load cycles; regulatoryrequirements; operating time; testing; repairs; remanufacture.

Inspection category and frequency guidelines recommended inAPI RP 8B section 5.3.3 are incorporated in Table 1 given onpage 5 for GJC Tubing Blocks and may be used as aninspection schedule initially until an experience basedinspection category and frequency schedule can be established.

The existence of visible cracks and areas of wear, which areindicators of possible structural deterioration and impendingfailure, require prompt evaluation to determine if the tubingblock and/or bail is suitable for continued use.

A complete inspection following Category III or Category IVguidelines should be made before and after Tubing Block useinvolving, running heavy casing strings, jarring, pulling onstuck pipes and/or operating at extreme low temperatures.

Prior to Category III and Category IV Tubing Block inspections,components are to be clean of all dirt, paint, grease, oil, scale, andother contaminates. that prevent an effective examination.Cleaning is to be done with an appropriate method such as; paint-stripping, steam-cleaning, grit-blasting.

See section entitled Gunnebo Johnson Tubing Block InspectionRequirements for specific areas to be inspected and thecorresponding acceptance criteria or remedy.



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Category IThis category involves observing the equipment duringoperation for indications of inadequate performance.

When in use, equipment shall be visually inspected on a dailybasis for cracks, loose fits or connections, elongation of parts,and other signs of wear, corrosion or overloading. Anyequipment found to show cracks, excessive wear, etc., shall beremoved from service for further examination.

The equipment shall be visually inspected by a personknowledgeable in that equipment and its function.

Category IIThis is Category I inspection plus further inspection forcorrosion, deformation, loose or missing components,deterioration, proper lubrication, visible external cracks, andadjustment.

Category IIIThis is Category II inspection plus further inspection, whichshould include NDT of critical areas and may involve somedisassembly to access specific components and to identify wearthat exceeds the manufacturer's allowable tolerances.

Category IVThis is Category III inspection plus further inspection for whichthe equipment is disassembled to the extent necessary to conductNDT of all primary-load-carrying components as defined bymanufacturer.

Equipment shall be:

- disassembled in a suitably-equipped facility to the extentnecessary to permit full inspection of all primary-load-carryingcomponents and other components that are critical to theequipment;

- inspected for excessive wear, cracks, flaws and deformations.

Gunnebo Johnson Tubing Block Inspection Requirements

The following Figure 1 illustrates the areas of GJC Tubing Blocks to be considered critical and that require 100% inspection.



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The following tables contain the Inspection Characteristic, Inspection Method, Acceptance Criteria or Remedy for each of the criticalinspection areas illustrated in Figure 1.

The definition of “relevant indication” when used in the following tables and associated with Magnetic Particle Inspection is a linearindication associated with a surface rupture in which the length is equal to or greater than three times its width. An indication isconsidered “rounded” and not linear when it has a circular or elliptical shape with its length less than three times its width.

For any questions regarding the inspection and acceptance criteria for GJC Tubing Blocks, please contact Gunnebo Johnson TechnicalSupport staff at 1-800-331-5460 or [email protected]

Figure 1



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Tubing Block Assembly and Disassembly Instructions

Following are general disassembly and assembly instructions for all models of Gunnebo Johnson Corporation (GJC) Tubing Blocks. Theinstructions are provided for the disassembly and assembly necessary to carry out thorough inspections and replacement of rejected parts.See figure 2 for Tubing Block parts referenced in the following disassembly and assembly instructions. For part replacement, see table 5for part numbers by model.

Figure 2



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Upper Block Body Unit

Lower Hook and Housing Unit

Disassembly Instructions

6. Remove center pin spacer if there is one.

7. Remove top sheave (1) complete with bearing cones and seals (7, 8 & 9).

8. Repeat step 6 and 7 for remaining sheaves.

9. Remove inner weight (5) if present (Model TB100Q24TTA only).

1. Position upper block body on flat surface with sheave center pin (10) vertical.

2. Remove upper and lower tie bolt nuts (3 & 14).

3. Remove cap screw (15) and lock washer (16) and unscrew right hand threaded center pin star nut (12).

4. Remove top side plate (11).

5. Remove dome (1) and reeving guide (17)

10. Lift lower side plate (11) off center pin (10) and tie bolts (2 & 13) to complete the upper block disassembly. Remove star nut (12) and tie bolt nuts (3 & 14) if required.

1. Suspend tubing block from the dome pin and rotate the hook to align the barbs parallel to the sheaves and engage locking device (33).

2. Disassemble rod bail from hook by removing keeper (36) and rod pin (38).

3. Place blocking under the hook index plate on both sides of the hook to support the housing (30) and hook assembly (31) when housing latch pins (22) are removed.

4. Lower tubing block unit on to the blocking such that the pressure on the housing latch pins (22) is relieved.

5. Remove housing latch pin snap rings (21).

6. Drive out latch pins (22) to disconnect the hook and housing (30 & 31) from the upper block body.

7. Remove both shroud latch pin keepers (20) and latch pins (18) and remove shrouds (19).

8. Lift upper block body unit off of hook and housing (30 & 31)

Tubing Block Unit

1. With housing (30) and hook assembly (31) supported as described in Tubing Block Unit step 3, remove retaining cap screws (23), cap screw seals (24) and hook nut cover plate (25).

2. Thoroughly clean any debris out of the drilled hole between the hook shank OD and hook nut ID with compressed air or solvent before attempting to remove hook nut.

3. Firmly tap around the outside surface of hook nut with a brass hammer or weighted rubber mallet to loosen any bound threads.

4. Remove the hook nut (26) using a strap wrench if more than hand tight. (Threads are right handed). If hook nut begins to be difficult to turn, STOP. Continuing will seize the nut and damage the threads. Rotate the nut backward while firmly tapping the nut with the brass hammer or weighted rubber mallet to loosen the bind. Rotate the nut back and forth until it loosens and progressively unthreads.

5. Seal (27) is installed on the hook nut (26) and will be removed with the hook nut.

6. Remove the hook thrust bearing (28) from the housing (30). Note the upper and lower orientation of the top and bottom races of the thrust bearing for proper reassembly.

7. Uninstall hook locking plunger (33) if required.

8. Uninstall hook latch (32) by removing latch pins and keepers (34 & 35) if required.

9. Note: Hook index plate and housing bushing (29) are installed with interference fits and can only be removed by special procedure. Contact Factory for assistance.



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1. Install a star nut (12) on the end of the center pin (10)with the anti-rotation dowel pin.

2. Install a nut (3) to one end of each upper tie bolt (2)and a nut (14) to one end of each lower tie bolt (13).

3. Install side plate (11) over center pin (10) and upperand lower tie bolts (2 & 13) and place on a flathorizontal surface with center pin and tie bolts vertical.Be sure center pin anti-rotation dowel pin is positionedinto the side plate (11) bore slot.

4. Preassemble all sheaves (6) with bearing cones (7) andseals (9) if previously disassembled.

5. Install one sheave assembly (6, 7, 8 and 9) on to thecenter pin (10).

6. Install one center pin sleeve (7).

7. Install remaining sheave assemblies (6, 7, 8 and 9) ontothe center pin. Install one center pin sleeve (7) betweeneach sheave.

8. Assemble dome (1) over upper two tie bolts (2).

9. Install reeving guide (17) over lower two tie bolts (13).

10. Install side plate (11) over center pin (10) and four tiebolts (2 & 13).

11. Install and tighten center pin star nut (12) to drawsheave bearings together. Note: sheave bearings arenon-adjustable type tapered roller bearings and areonly required to be drawn tight.

12. Install and tighten tie bolt nuts (14) on lower tie bolts(13) drawing side plate (11) against reeving guide (17)spacers. Torque to 35-40 ft-lbs. Step 12 must be doneahead of step 13.

13. Install and tighten tie bolt nuts (3) on upper tie bolts (2)drawing side plate (11) against dome (1) spacers.

Upper Block Unit Lower Hook and Housing Unit

1. Reassemble hook latches (32) if previously disassembledwith pins (34 & 35).

2. Reassemble locking device (33) if previouslydisassembled.

3. Support hook assembly (31) on blocking as described inTubing Block Unit step 3.

4. Install hook housing (30) onto hook shank with housinglatch pin (22) holes centerline perpendicular to the hookbarbs and engage locking device (33).

5. Install thrust bearing (28) into the large bore of the hookhousing (30). Note the lower bearing race has a larger IDthan the upper race and MUST be assembled into thehook housing (30) bore first. Be very certain the lowerbearing race is properly seated into the slightly smallerdiameter at the bottom of the hook housing bore.

6. Install seal (27) on hook nut (26) if previously removed.

7. Clean hook and hook nut threads thoroughly before re-installing. Debris in the threads will cause hook nut tolock up and seize.

8. Apply anti-seize lubricant to hook and hook nut threadsbefore reassembly taking care to prevent threadcontamination.

9. Install hook nut (26) taking care not to damage leadthread.

10. Turn hook nut against hook shank shoulder and adjust toline up the keeper cap screw holes between the hook nutand hook shank.

11. Install hook nut cover (25) with cap screw (23 and seal(24) and tighten hand tight.

12. Lower upper block body unit over hook housing (30)lugs, align and install housing pins (22). Note: It may benecessary to loosen tie bolt nuts (3 & 14) to align hookhousing and block body holes. If so loosen, adjust andre-torque nuts (3 & 14).

13. Install snap rings (21) onto housing pins (22).

14. Lubricate hook and sheave bearings.

Re-assembly Instructions

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