sop iii-200 r00

Effective Date August 1, 2005

SOP No. III-200

VOLUME III USED DRILL PIPE Revision 0 Page No. 1 of 22

STANDARD OPERATING PROCEDURE

(Company Confidential) Magnetic Particle Inspection

Copyright 2005 Tuboscope, P.O. Box 808, Houston, Texas 77001

MAGNETIC PARTICLE INSPECTION


FOR USED DRILL PIPE INSPECTION NOTE: This document is considered COMPANY CONFIDENTIAL and is not to be distributed

in whole or in part outside the Company, without the express, written consent of the undersigned authority.

PROCEDURE APPROVAL: ___________________________ DATE: _____________

Vice President Inspection & Coating Product Line PROCEDURE APPROVAL: ___________________________ DATE: ______________ Director Quality & Technical Services


SOP No. III-200





INTRODUCTION The intent of this document is to serve as an operation guide for Magnetic Particle Inspection of Used Drill Pipe, BHA and related components. Accuracy in adherence to these minimum requirements for preparation and operation to detect flaws will provide for optimum performance and ease of operation. Utilization of this document will require a thorough understanding of the content by the user.


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TABLE OF CONTENTS 1.0 Scope............................................................................................................................................ 5 1.2.1 Wet Fluorescent Magnetic Particle Tool Joint Inspection, Type I - Residual

Technique .............................................................................................................................. 5

1.2.2 Wet Fluorescent Magnetic Particle Tool Joint Inspection, Type II - Residual Technique

.............................................................................................................................. 5 1.2.3 Wet Fluorescent Magnetic Particle Tool Joint Inspection, Type I - Active

Technique ........................................................................................................5 1.2.4 Wet Fluorescent Magnetic Particle Tool Joint Inspection, Type II - Active

Technique ........................................................................................................5 1.2.5 Dry Magnetic Particle Slip/Critical Area Inspection - Active Technique ...........5 1.2.6 Wet Magnetic Particle Slip/Critical Area Inspection - Active Technique...........5 1.2.7 Wet Magnetic Particle Slip/Critical Area Inspection Residual Technique......5 1.2.8 Dry Magnetic Particle Inspection of Upsets After EMI....................................... 6 2.0 Personnel Requirements.............................................................................................................. 6 3.0 Equipment Requirements............................................................................................................. 6 3.1 Magnetizing Equipment...................................................................................................... 6 3.2 D.C. Coils ........................................................................................................................... 7 3.3 A.C. Coil ............................................................................................................................. 7 3.5 Magnetic Particle Field Indicators ...................................................................................... 7 3.6 Light Sources...................................................................................................................... 7 3.8 Wet Magnetic Particles ...................................................................................................... 7 3.8.2 Wet Fluorescent Magnetic Particles..................................................................... 8 3.8.3 Suspension Medium............................................................................................. 8 3.8.4 Concentration ....................................................................................................... 8 3.8.5 Water Break Test.................................................................................................. 9 3.8.6 Particle Contamination ......................................................................................... 9 3.8.7 Suspension Contamination .................................................................................. 9 3.9 Dry Magnetic Particles ....................................................................................................... 9 3.11 Equipment Calibration...................................................................................................... 10 4.0 Surface Preparation.................................................................................................................... 10 5.0 Material Identification ............................................................................................................11 6.0 Tool Joint Magnetic Field Induction ......................................................................................11 6.1 Tool Joint Magnetic Field Induction - Residual ...........................................................11 6.2 Tool Joint Magnetic Field Induction - Active................................................................12 7.0 Wet Fluorescent Magnetic Particle Tool Joint Inspection, Type I - Residual ......................... 13 7.1 Cleaning ........................................................................................................................... 13 7.3 Inspection of Pin Threads ................................................................................................ 13 7.4 Inspection of Box OD ....................................................................................................... 14 8.0 Wet Fluorescent Magnetic Particle Tool Joint Inspection, Type II - Residual ........................ 14 9.0 Wet Magnetic Particle Tool Joint Inspection, Type I - Active .................................................. 15


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10.0 Wet Magnetic Particle Tool Joint Inspection, Type II - Active ................................................. 17 10.1 Cleaning ........................................................................................................................... 17 10.2 Inspection of Pin Threads ................................................................................................ 17 11.0 Dry Magnetic Particle Slip/Critical Area Inspection Active Technique ................................ 18 11.1 Cleaning ........................................................................................................................... 18 11.2 A.C. Yoke Inspection Procedure...................................................................................... 18 11.3 Coil Inspection Procedure................................................................................................ 19 12.0 Wet Magnetic Particle Slip/Critical Area Inspection Active Technique................................ 19 13.0 Wet Magnetic Particle Slip/Critical Area Inspection - Residual Technique ............................ 20 14.0 Dry Magnetic Particle Inspection of Upsets After EMI............................................................. 21 15.0 Evaluation of Imperfections 22 16.0 Acceptance Criteria .................................................................................................................... 22 17.0 Post Inspection Procedures ....................................................................................................... 22


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1.0 SCOPE 1.1 This procedure establishes the minimum requirements for magnetic particle

inspection of drill pipe rotary shouldered connections (RSC), tool joints, upsets and slip/critical areas. The purpose is to locate fatigue cracking in the roots of the threads, upsets and slip/critical areas and heat check cracking, in tool joints.

1.2 Specifically, this procedure covers the following inspection techniques. Only

1.2.8 is mandatory by Tuboscope policy. All other techniques in this procedure are invoked when specified by the customer, DS-1 or NS-2.

1.2.1 Wet Fluorescent Magnetic Particle Tool Joint Inspection, Type I -

Residual Technique For detection of transverse service-induced cracks in the pin threads only, utilizing the wet fluorescent method and longitudinal cracking on the OD surface of the box only, using dry magnetic particles. See 7.0.

1.2.2 Wet Fluorescent Magnetic Particle Tool Joint Inspection, Type II -

Residual Technique - For detection of transverse service-induced cracks in the pin and box threads, using wet magnetic particles. See 8.0.

1.2.3 Wet Fluorescent Magnetic Particle Tool Joint Inspection, Type I - Active

Technique For detection of transverse service-induced cracks in the pin threads only, utilizing the wet fluorescent method and longitudinal cracking on the OD surface of the box only, using dry magnetic particles. See 9.0.

1.2.4 Wet Fluorescent Magnetic Particle Tool Joint Inspection, Type II - Active

Technique - For detection of transverse service-induced cracks in the pin and box threads, using wet magnetic particles. See 10.0.

1.2.5 Dry Magnetic Particle Slip/Critical Area Inspection - Active Technique -

For detection of transverse service-induced cracks in the slip/critical areas of the tube body, using dry magnetic particles and a residual magnetic field. See 11.0.

1.2.6 Wet Magnetic Particle Slip/Critical Area Inspection - Active Technique

For detection of transverse service-induced cracks in the slip/critical areas of the tube body, using wet magnetic particles and an active magnetic field. See 12.0.

1.2.7 Wet Magnetic Particle Slip/Critical Area Inspection Residual Technique

For detection of transverse service-induced cracks in the slip/critical


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areas of the tube body, using wet magnetic particles and a residual magnetic field. See 13.0.

1.2.8 Dry Magnetic Particle Inspection of Upsets After EMI - For detection of

transverse service-induced cracks in the upset areas of the tube body, using dry magnetic particles. See 14.0.

1.3 Tuboscope document is the controlling document whenever any other like kind

prior-dated Tuboscope inspection procedures are in conflict. 1.4 The latest revision of the following documents were used as references for

establishing this procedure: 1.4.1 API Specification 7 - Rotary Drill Stem Elements. 1.4.2 API Recommended Practice 7G - Drill Stem Design and Operating

Limits. 1.4.3 A.S.T.M. E 709 - Standard Guide for Magnetic Particle Examination. 1.4.4 A.S.T.M. E 1444 - Standard Practice for Magnetic Particle Examination. 1.4.5 Standard DS-1 - Drill Stem Design and Inspection. 1.4.6 NS-2 North Sea Drillstring Inspection Standard. 1.4.7 SOP III-001 - General Requirements.

2.0 PERSONNEL REQUIREMENTS

Personnel performing the inspection techniques outlined in this procedure shall be certified in Magnetic Particle Testing in accordance with 4.0 of SOP III-001.

3.0 EQUIPMENT REQUIREMENTS 3.1 Magnetizing Equipment 3.1.1 Any one (1) of the following types of direct current (DC) magnetizing

equipment listed below may be utilized at the discretion of the Tuboscope location.

a. Battery Bank Pulse Magnetizing System.


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b. Rectified AC Magnetizing System. c. Capacitor Discharge (CD) Magnetizing System. 3.2 D.C. Coils

3.2.1 A 500-turn SONOSCOPE buggy coil (or equivalent) shall be used to induce a longitudinal field.

3.2.2 A 165-turn drill collar mag coil may be used instead of the SONOSCOPE

coil. 3.2.3 A coil made from welding cable may also be used instead of the

SONOSCOPE coil. The conductor cable shall be tied or taped to keep the turns close together. The insulation shall be inspected each shift and maintained to prevent arcing to the material being examined.

3.2.4 For pre-manufactured coils, the number of turns shall be permanently

marked on the exterior of the coil body. 3.3 AC Coil. The number of turns shall be permanently marked on the exterior of

the coil body. 3.4 An electromagnetic A.C. yoke with adjustable legs shall be used for material with

an outside diameter of five (5) inches (127 mm) or less. Fixed leg yokes may be used on material with an outside diameter of 5-1/2 inches (140 mm) and larger.

3.5 Magnetic Particle Field Indicators. A mechanical magnetometer or Hall-effect

electronic gauss meter shall be used to verify the adequacy of magnetization. 3.5.1 The magnetometer shall have a range of " 50.0 gauss (5,0 millitesla). 3.6 Light Sources. Overhead lighting, black light (UV-A) sources, hand held white

light fixtures and light meters shall meet the requirements in 9.2 and 9.3 in SOP III-001.

3.7 For mobile work, a black light cape, capable of blocking out visible light to the

levels required in 9.2 of SOP III-001.

3.8 Wet Magnetic Particles. Mix particles and the suspension medium according to the manufacturers recommendations.


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3.8.1 The particles shall fluoresce greenish-yellow under black light. 3.8.2 Wet Fluorescent Magnetic Particles.

a. For water baths, Magnaflux 20B or Mi-Glow #810 (or equivalent)

particles shall be used. Smoother test surfaces (machined) require a greater percent of wetting agent than rough test surfaces.

b. For Petroleum Distillate (solvent)/Oil Baths. Magnaflux 14A or Mi-

Glow #800 (or equivalent) particles shall be used. c. The bath concentration shall be in the range of 0.1 to 0.4 mL of

particles per 100 mL of bath, using a 100 mL centrifuge tube (with a 1 mL stem and 0.05 mL divisions).

3.8.3 Suspension Medium. The suspension medium for wet fluorescent

particle baths shall be a light petroleum distillate (solvent) with low natural fluorescence or water with conditioning agents. Diesel or gasoline shall not be used. Mix particles and the suspension medium according to the manufacturers recommendation.

a. Water baths shall be prepared from materials (magnetic particles,

wetting agent, corrosion inhibitor, defoamer, etc.) based on the manufacturer's recommendations.

3.8.4 Concentration. Check the concentration as follows:

a. The inside surfaces of the centrifuge tube shall be cleaned and

rinsed prior to each use. b. Non-circulating baths shall be agitated frequently and prior to a

settling test. c. For recirculating systems, the suspension should be run a minimum of

30 minutes before taking the sample. d. Run the solution through the system to bleed off any old solution or

dried particles. e. Fill the centrifuge tube to the 100 mL line.


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f. Let the solution sit undisturbed in an area free from vibration and magnetism for the applicable dwell times:

For water based suspensions, 30 minutes. For petroleum distillate based suspensions, 60 minutes. g. Add particles or carrier fluid as necessary to achieve the proper

concentration. h. The bath concentration results shall be documented. i. The settling test shall be repeated after any additions of particles or

liquid and at the beginning and ending of each inspection shift. All pieces inspected between an acceptable check and an unacceptable check shall be re-inspected after the bath has been corrected.

3.8.5 Water Break Test. Water baths shall be tested for proper conditioning

by performing a water break test. A Water Break Test shall be performed, as described below, after each new bath is mixed:

a. After covering the surface of the material to be inspected with the

conditioned vehicle, note the appearance of the surface after the vehicle flow has been stopped. If a continuous film forms over the entire part, sufficient wetting agent is present. If the film of suspension breaks, exposing bare surface, insufficient wetting agent is present or the part is not adequately clean.

3.8.6 Particle Contamination. Examine the graduated portion of the centrifuge

tube with a black light. If the test shows particle contamination that fluoresces or settles in an amount greater than 30% of the settled magnetic particles, the bath shall be changed.

3.8.7 Suspension Contamination. The suspension vehicle above the

precipitate shall be examined with a black light for fluorescence.

NOTE: For mobile inspections, the test shall be completed at the end of each job or shift, if the inspection job lasts the entire shift.

3.9 Dry Magnetic Particles. The particles shall provide high contrast with the

surface being examined. Use of re-cycled dry particles is prohibited.


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3.9.1 The mixture of dry magnetic particles shall consist of particle sizes with a minimum of 75 percent by weight being finer than 100 ASTM sieve size and a minimum of 15 percent by weight being finer than 325 ASTM sieve size. The mixture shall not contain undesirable fillers such as moisture, dirt, sand, etc.

a. Each Tuboscope location shall maintain the particle size certificate

on file for verification by customers or customer representatives. 3.9.2 Dry particles used from open containers shall be verified, by touch

(clump free), as moisture free prior to use. 3.9.3 For application of dry magnetic particles onto outside surfaces (and

inside surfaces when practical), dispensers shall provide a light dusting action.

3.10 A small magnifying mirror for assistance in inspecting the roots of the threads in

the box connection. A flat mirror may be used if a magnifying mirror is not available.

3.11 Equipment Calibration. Equipment calibration/verification shall be in accordance

with 9.1 of SOP III-001. 3.11.1 Magnetizing source ammeters and Hall-effect electronic gauss meters

shall be calibrated after any repairs and whenever an erratic response is indicated and at the frequency specified in Table 9.1 in SOP III-001.

3.11.2 Mechanical magnetometers shall have their accuracy verified when

repaired and whenever the zero position deviates more than " one (1) division and at the frequency specified in Table 9.1 in SOP III-001.

3.11.3 AC Yokes shall be verified when repaired and at the frequency specified

in Table 9.1 in SOP III-001. 4.0 SURFACE PREPARATION 4.1 Thread protectors shall be removed and cleaned (if required) in accordance with

13.0 of SOP III-001. 4.2 Thread compound, grease, dirt and other hard foreign deposits, except

manufacturer applied thread coatings (phosphate), shall be removed from surfaces to be inspected.


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4.3 Final cleaning of thread roots should be performed using a soft wheel made from fibreboard < 1/8 inch (3 mm) thick. Care shall be exercised when using the wheel not to remove any metal from the thread form.

4.4 If the outside surface of the tool joints are to be dry magnetic particle inspected,

the area from the upset to the shoulder shall be cleaned in accordance with 14.0 of SOP III-001.

4.5 When Critical and Slip Areas are to be dry magnetic particle inspected, the

areas identified in Figure 3.3, in SOP III-001, shall be cleaned in accordance with 14.0 of SOP III-001.

4.6 Surfaces to be inspected with dry magnetic particles shall be completely dry. 5.0 MATERIAL IDENTIFICATION Material identification shall be in accordance with 11.0 of SOP III-001. 6.0 TOOL JOINT MAGNETIC FIELD INDUCTION 6.1 Longitudinal Magnetic Field Induction - Residual 6.1.1 Each connection shall be magnetized with a longitudinal magnetic field

using one (1) of the magnetizing sources described in 3.1 and a coil configuration which meets the requirements of 3.2.

6.1.2 Place the coil over the threads to the edge of the tool joint pin (and/or box,

as applicable) torque shoulder. 6.1.3 The amp-turns of the coil shall be adjusted to provide a residual field of >

30 gauss (3 millitesla) everywhere around the end of the connection, when measured with a mechanical magnetometer touching the end face of the connection or > 110 gauss (11 millitesla), when measured with a Hall-effect electronic gauss meter probe touching the end face.

6.1.4 At the drill pipe buggy desk (or mag power supply), place MAG switch in

the ON position. 6.1.5 Turn MAG switch to OFF position and remove the coil. 6.1.6 Additionally, during magnetization of the pin ends, ensure that the coil

polarity is reversed on each length that is energized. To originate the


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maximum residual field the coil must be reversed on each length by alternating the north and south field with a south to north field. If the coil direction is not reversed, the residual field may become weak or the length could be reduced by the adjacent length.

6.1.7 During and after magnetization with a coil, each end shall be positioned

no closer than 1 foot (31 cm) to another piece of ferromagnetic material, until inspection of the magnetized area has been completed.

6.1.8 The magnetization levels achieved in 6.1.4 shall be verified:

a. On the first five (5) pieces of the same material description to assure

the maximum current value is achieved and b. A minimum of once every 50 ends magnetized and on the last piece

of the same material description. 6.1.9 All pieces magnetized between an acceptable check and an

unacceptable check, as described in 6.1.8, shall be re-magnetized prior to inspection.

6.2 Longitudinal Magnetic Field Induction - Active 6.2.1 Each connection shall be magnetized with a longitudinal magnetic field

using one (1) of the magnetizing sources described in 3.1 and a coil configuration which meets the requirements of 3.2.

6.2.2 Place the coil over the shoulder of the tool joint pin (and/or box, as

applicable). 6.2.3 Energize the coil and simultaneously apply magnetic particle solution to

the thread area and observe the particle mobility. Adjust the magnetizing current to produce a field as high as possible without the particles being prematurely pulled out of suspension. Turn OFF the current. Particle mobility should continue for at least 6 seconds.

NOTE: Excessive ampere-turns may cause a lack of mobility of fluorescent particles on the thread surface. This impairs in two (2) ways; the particles may create a background that makes detection of cracks more difficult and the lack of particles in the fluid may reduce the intensity of the indications.


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6.2.4 Additionally, during magnetization of the pin ends, ensure that the coil polarity is reversed on each length that is energized. To originate the maximum residual field the coil must be reversed on each length by alternating the north and south field with a south to north field. If the coil direction is not reversed, the residual field may become weak or the length could be reduced by the adjacent length.

6.2.5 During and after magnetization with a coil, each end shall be positioned

no closer than 1 foot (31 cm) to another piece of ferromagnetic material, until inspection of the magnetized area has been completed.

7.0 WET FLUORESCENT MAGNETIC PARTICLE TOOL JOINT INSPECTION, TYPE I

RESIDUAL TECHNIQUE (DRY MAGNETIC PARTICLE INSPECTION OF BOX OD) Magnetic Particle Inspection of Tool Joints, Type I, is performed to detect transverse service-induced cracks in the pin threads only, utilizing the wet fluorescent method and longitudinal cracking on the OD surface of the box only, using dry magnetic particles. Threads and shoulders are visually examined for identifiable damage in accordance with 5.5.1 and 5.5.2 in SOP III-100.

7.1 Cleaning 7.1.1 Pin threads, shoulders and the box OD must be cleaned to perform the

magnetic particle inspection in accordance with 4.0. 7.1.2 Burrs and rough spots should be smoothed with a soft grinding wheel. 7.2 Induce a longitudinal magnetic field in the pin tool joint in accordance with 6.1.

7.3 Inspection of Pin Threads.

7.3.1 Position cape cover over person and surface to be inspected. Hold the black light 4 to 5 inches (10 to 13 cm) from the surface to be inspected and direct the black light at the surface.

NOTE: For inplant inspections, capes are not required if black light booths are used. NOTE: Ultraviolet absorbing eyeglasses shall be worn to prevent unnecessary exposure of the eye to ultraviolet radiation. Eyeglasses which are photochromic (darken with increased light exposure) or that are permanently dark (sunglasses) are prohibited.


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7.3.2 Vigorously agitate the magnetic particle solution and apply the solution with low velocity, uniformly over the applicable surfaces of the connection.

7.3.3 Particular attention shall be paid to the area of the last engaged thread

on each connection. The material shall either be rolled or rotated a minimum of 1-1/4 revolutions.

7.3.4 Any fatigue cracks noted in the connection are cause for rejection. 7.3.5 If an indication is questionable, the area should be re-cleaned or buffed

with a nonmetallic and nonabrasive buffing wheel and re-inspected.

7.4 Inspection of Box OD 7.4.1 Apply the electromagnetic yoke such that the handle is oriented at 90 to

the longitudinal axis of the tool joint. 7.4.2 As the yoke is moved over the outside surface of the box tool joint,

sprinkle a fine cloud of dry powder on the tool joint surface between the yoke legs. The pipe shall be rolled or rotated a minimum 1-1/4 turns.

7.4.3 Inspect the entire outside surface of the box tool joints, except areas of

hard banding. Overlap the legs of the yoke 50% to ensure complete coverage of the surface.

7.4.4 Any cracks noted in the tool joint are cause for rejection. 7.5 Upon completion of the inspection remove all magnetic particle inspection

materials from the inspected surfaces. 8.0 WET MAGNETIC PARTICLE TOOL JOINT INSPECTION, TYPE II - RESIDUAL

TECHNIQUE Magnetic Particle Inspection of Tool Joints, Type II, is performed to detect transverse service-induced cracks in the pin and box threads, using wet magnetic particles. Threads and shoulders are visually examined for identifiable damage in accordance with 5.5.1 and 5.5.2 in SOP III-100.

8.1 Pin and box threads, shoulders and the box OD must be cleaned to perform the

magnetic particle inspection in accordance with 4.0.


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8.2 Burrs and rough spots should be smoothed with a soft grinding wheel. 8.3 Induce a longitudinal magnetic field in the pin tool joint in accordance with 6.1. 8.4 Position cape cover over person and surface to be inspected. Hold the black light

4 to 5 inches (10 to 13 cm) from the surface to be inspected and direct the black light at the surface.


8.5 The wet magnetic particle solution shall be applied with low velocity flowing

uniformly over the applicable surfaces of the connection. 8.6 Particular attention shall be paid to the area of the last engaged thread on each

connection. The material shall either be rolled or rotated a minimum of 1-1/4 revolutions.

8.7 Any fatigue cracks noted in the connection are cause for rejection. 8.8 If an indication is questionable, the area may be re-cleaned or buffed with a

nonmetallic and nonabrasive buffing wheel and re-inspected. 8.9 Repeat 8.2 and 8.3 for the Box tool joints. 8.9.1 A small magnifying mirror shall be used to inspect the roots of the box

threads.

8.10 Upon completion of the inspection remove all magnetic particle inspection materials from the inspected surfaces.

9.0 WET FLUORESCENT MAGNETIC PARTICLE TOOL JOINT INSPECTION, TYPE I

ACTIVE TECHNIQUE (DRY MAGNETIC PARTICLE INSPECTION OF BOX OD) Magnetic Particle Inspection of Tool Joints, Type I, is performed to detect transverse service-induced cracks in the pin threads only, utilizing the wet fluorescent method and longitudinal cracking on the OD surface of the box only, using dry magnetic particles. Threads and shoulders are visually examined for identifiable damage in accordance with


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5.5.1 and 5.5.2 in SOP III-100. 9.1 Pin threads, shoulders and the box OD must be cleaned to perform the magnetic

particle inspection in accordance with 4.0. 9.2 Burrs and rough spots should be smoothed with a soft grinding wheel. 9.3 Position cape cover over person and surface to be inspected. Hold the black light



9.4 Energize the coil and simultaneously apply magnetic particle solution to the

thread area. Periodically, vigorously agitate the magnetic particle solution and apply the solution with low velocity, uniformly over the applicable surfaces of the connection.

9.5 Turn OFF the magnetizing current. 9.6 Inspect entire threaded area. Particular attention shall be paid to the area of the

last engaged thread on each connection. The material shall either be rolled or rotated a minimum of 1-1/4 revolutions.

9.7 Any fatigue cracks noted in the connection are cause for rejection. 9.8 If an indication is questionable, the area should be re-cleaned or buffed with a

nonmetallic and nonabrasive buffing wheel and re-inspected.

9.9 Inspection of Box OD. Repeat 7.4 for longitudinal cracking on the OD surface of the box.

9.10 Upon completion of the inspection remove all magnetic particle inspection

materials from the inspected surfaces.


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10.0 WET FLUORESCENT MAGNETIC PARTICLE TOOL JOINT INSPECTION, TYPE II ACTIVE TECHNIQUE Magnetic Particle Inspection of Tool Joints, Type II, is performed to detect transverse service-induced cracks in the pin and box threads, using wet magnetic particles. Threads and shoulders are visually examined for identifiable damage in accordance with 5.5.1 and 5.5.2 in SOP III-100.

10.1 Cleaning 9.1.1 Pin threads, shoulders and the box OD must be cleaned to perform the

magnetic particle inspection in accordance with 4.0. 9.1.2 Burrs and rough spots should be smoothed with a soft grinding wheel. 10.2 Inspection of Pin Threads 10.2.1 Position the cape cover over person and surface to be inspected. Hold the

black light 4 to 5 inches (10 to 13 cm) from the surface to be inspected and direct the black light at the surface.


10.2.2 Energize the coil and simultaneously apply magnetic particle solution to

the thread area. Periodically, vigorously agitate the magnetic particle solution and apply the solution with low velocity, uniformly over the applicable surfaces of the connection.

10.2.3 Turn OFF the magnetizing current. 10.2.4 Inspect entire threaded area. Particular attention shall be paid to the

area of the last engaged thread on each connection. The material shall either be rolled or rotated a minimum of 1-1/4 revolutions.

10.2.5 Any fatigue cracks noted in the connection are cause for rejection.


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10.2.6 If an indication is questionable, the area should be re-cleaned or buffed with a nonmetallic and nonabrasive buffing wheel and re-inspected.

10.3 Repeat 10.2 for the Box tool joints.

10.3.1 A small magnifying mirror shall be used to inspect the roots of the box

threads.

10.4 Upon completion of the inspection remove all magnetic particle inspection materials from the inspected surfaces.

11.0 DRY MAGNETIC PARTICLE SLIP/CRITICAL AREA INSPECTION ACTIVE

TECHNIQUE Magnetic Particle Inspection of the slip/critical areas of the tube body, to detect transverse service-induced cracks using dry magnetic particles and an A.C. Yoke which meets the requirements of 3.4, an A.C, Coil which meets the requirements of 3.3 or a D.C. Coil which meets the requirements of 3.2. 11.1 Cleaning. The inspection area shall be free of scale, oil or other foreign materials

and dry. 11.2 A.C. Yoke Inspection Procedure 11.2.1 Apply the electromagnetic yoke such that the handle is oriented at 90 to

the transverse axis of the pipe. 11.2.2 As the yoke is moved through the slip area, sprinkle a fine cloud of dry

powder on the pipe surface between the yoke legs. The pipe shall be rolled or rotated a minimum 1-1/4 turns. Overlap the legs of the yoke 50% to ensure complete coverage of the surface. The Slip areas defined in 3.3 in SOP III-001 shall be inspected.

11.2.3 If an indication is questionable, the area should be re-cleaned or buffed

with a nonmetallic and nonabrasive buffing wheel and re-inspected. 11.2.4 Repeat 11.2.2 and 11.2.3 for the critical area on the opposite end of the

tube, for the distance defined in 3.3 in SOP III-001.


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11.3 Coil Inspection Procedure 11.3.1 Slide the Coil over the tool joint and position it at the end of the tool joint

taper. 11.3.2 Adjust the amp-turns of the coil to provide at least 500 amp-turns per

inch of connection O.D. NOTE: Excessive ampere-turns (NI) can produce furring of dry magnetic particles on the outside surface that can conceal indications.

11.3.3 Energize the coil and simultaneously sprinkle a fine cloud of dry powder

on the pipe surface, under the coil. The pipe shall be rolled or rotated a minimum 1-1/4 turns. The Slip areas defined in 3.3 in SOP III-001 shall be inspected.

11.3.4 If an indication is questionable, the area should be re-cleaned or buffed

with a nonmetallic and nonabrasive buffing wheel and re-inspected. 11.3.5 Repeat 11.3.3 and 11.3.4 for the critical area on the opposite end of the

tube, for the distance defined in 3.3 in SOP III-001. 11.4 Any suspect crack indications shall be investigated in accordance with 9.0 in SOP

III-002. 11.5 Upon completion of the inspection remove all magnetic particle inspection

materials from the inspected surfaces. 12.0 WET MAGNETIC PARTICLE SLIP/CRITICAL AREA INSPECTION ACTIVE

TECHIQUE Magnetic Particle Inspection of the slip/critical areas of the tube body, to detect transverse service-induced cracks using wet magnetic particles and an A.C, Coil which meets the requirements of 3.3 or a D.C. Coil which meets the requirements of 3.2.

12.1 Surfaces to be inspected must be clean and free of oil, rust, scale and other

foreign materials. 12.2 Slide the A.C. or D.C. Coil over the tool joint and position it at the end of the tool

joint taper.


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12.3 Adjust the amp-turns of the coil to provide at least 500 amp-turns per inch of connection O.D.

NOTE: Excessive ampere-turns (NI) can produce lack of mobility of fluorescent particles on the outside surface that can conceal indications.

12.4 Position the cape cover over person and surface to be inspected. Hold black light


NOTE: For inplant inspections, capes are not required if black light booths are used. NOTE: Ultraviolet absorbing eyeglasses shall be worn to prevent unnecessary exposure of the eye to ultraviolet radiation. Eyeglasses which are photochromic (darken with increased light exposure) or that are permanently dark (sunglasses) are prohibited. 12.5 Vigorously agitate the magnetic particle solution. 12.6 Energize the coil and simultaneously apply the solution with low velocity,

uniformly on the pipe surface, under the coil. The pipe shall be rolled or rotated a minimum 1-1/4 turns. The Slip areas defined in 3.3 in SOP III-001 shall be inspected.

12.7 If an indication is questionable, the area should be re-cleaned or buffed with a

nonmetallic and nonabrasive buffing wheel and re-inspected. 12.8 Repeat 12.6 and 12.7 for the critical area on the opposite end of the tube, for the

distance defined in 3.3 in SOP III-001. 12.9 Any suspect crack indications shall be investigated in accordance with 9.0 in SOP

III-002. 12.10 Upon completion of the inspection remove all magnetic particle inspection

materials from the inspected surfaces. 13.0 WET MAGNETIC PARTICLE SLIP/CRITICAL AREA INSPECTION RESIDUAL

TECHNIQUE Magnetic Particle Inspection of the slip/critical areas of the tube body, to detect transverse service-induced cracks using the wet magnetic particle method.


SOP No. III-200





13.1 Surfaces to be inspected must be clean and free of oil, rust, scale and other foreign materials.

13.2 Place the drill pipe coil over the slip area. 13.3 Adjust the amp-turns of the coil to provide at least 800 amp-turns per inch of

connection O.D. Remove coil turn OFF current. 13.3.1 For the SONOSCOPE buggy coil, activate the coil to 15 amps. 13.4 Position the cape cover over person and surface to be inspected. Hold black light



13.5 Vigorously agitate the magnetic particle solution and apply the solution with low

velocity, uniformly over the slip area. 13.6 If an indication is questionable, the area should be re-cleaned or buffed with a

nonmetallic and nonabrasive buffing wheel and re-inspected. 13.7 Any suspect crack indications shall be investigated in accordance with 9.0 in SOP

III-002. 13.8 Repeat 13.2 through 13.2.7 for critical area on the opposite end of the tube. 13.9 Upon completion of the inspection remove all magnetic particle inspection

materials from the inspected surfaces. 14.0 DRY MAGNETIC PARTICLE INSPECTION OF UPSETS AFTER EMI

After completion of an EMI (buggy or automated full length EMI) inspection it is mandatory to inspect the upset runout area, using the residual field and dry magnetic particles. 14.1 The inspection area shall be free of scale, oil or other foreign materials and dry.


SOP No. III-200





14.2 Sprinkle a fine cloud of dry powder on the pipe upset surfaces, covering the area of tube not inspected by the EMI unit, up to the tool joint. The pipe shall be rolled or rotated a minimum 1-1/4 turns.

14.3 Repeat 14.2 for the upset on the opposite end of the tube. 14.4 Any suspect crack indications shall be investigated in accordance with 9.0 in SOP

III-002. 15.0 EVALUATION OF IMPERFECTIONS

All indications shall be evaluated in accordance with 9.0 in SOP III-002. 16.0 ACCEPTANCE CRITERIA

Imperfections shall be evaluated in accordance with the requirements of the applicable Table 7.2.3 - 1 through 7.2.3 18 in SOP III-002, unless specified otherwise by the customer.

17.0 POST INSPECTION PROCEDURES

The applicable requirements of Sections 15.0 and 18.0 in SOP III-001 shall be followed when the last inspection service is completed on each piece.

sop iii-200 r00

Documents

drill pipe revision

operation guide

ease of operation

minimum requirements

personnel requirements

equipment requirements

written consent

related components