MANAUL-9407_B

(1)

(2)

Hydril makes no warranties of any kind, expressed or implied, including any warranty of mechanical fitness for any particular purpose, that the work performed pursuant to this manual will be free from defects in workmanship or material.

Hydril retains for itself all proprietary rights in and to all designs, engineering details, data, and proce-dures set forth herein. This manual is intended for the sole use of Hydril customers, and they shall strictly control copying of same, as this manual and all copies thereof may be recalled by Hydril at any time.

This manual makes recommendations only. The customer is at all times responsible for actual

disas-sembly, inspection, reasdisas-sembly, and testing of the blowout preventer. The customer also is solely re-sponsible for providing competent and qualified per-sons, equipment and facilities to perform such opera-tions, and for workmanship and safety. If at any time the customer is unable to understand recommenda-tions made in this manual or is unable to follow those recommendations, they should consult the nearest Hydril Authorized Repair Facility or Hydril Headquar-ters. The addresses, telephone numbers, FAX num-bers of the repair facilities as well as Hydril Headquar-ters are listed in Section 10 of this manual.

(3)

PAGE

Please contact Hydril Pressure Control Products for any assistance or questions concerning the information in this manual. All information contained in this manual is the exclusive property of Hydril Company LP.

HYDRIL COMPANY LP/P.O. BOX 60458/HOUSTON, TEXAS 77205 TELEPHONE: (281) 449-2000

FAX: (281) 985-2828

Preface . . . . ii Revision Record . . . . iv 1.0 INTRODUCTION . . . . 1-1 2.0 INSPECTION SCHEDULE . . . . 2-1 3.0 VISUAL INSPECTION . . . . 3-1 4.0 GAUGE INSPECTION . . . . 4-1

5.0 BOP OPERATING TEST . . . . 5-1 6.0 HYDRAULIC SYSTEM TEST . . . . 6-1

7.0 WELLBORE PRESSURE TEST . . . . 7-1

8.0 MPL LOCK TEST . . . . 8-1

9.0 INSPECTION FORMS . . . . . 9-1

10.0 HYDRIL REPAIR FACILITIES . . . . 10-1

(4)

SECTION

DATE

REVISION

1.0 INTRODUCTION

2.0 INSPECTION SCHEDULE 3.0 VISUAL INSPECTION

4.0 GAUGE INSPECTION 10-06-97 A

5.0 BOP OPERATING TEST 6.0 HYDRAULIC SYSTEM TEST 7.0 WELLBORE PRESSURE TEST 8.0 MPL LOCK TEST

9.0 INSPECTION FORMS 10.0 HYDRIL REPAIR FACILITIES

(5)

1.0 INTRODUCTION

PAGE

1.1 General . . . . 1-2 A. Purpose . . . . 1-2 B. Ram BOP Configuration . . . . 1-2 C. Initial Safety Precautions . . . . 1-2 D. Part Identification . . . . 1-2 E. Required Equipment . . . . 1-2 F. BOP Control System Requirements . . . . 1-2 G. Cleaning . . . . 1-2 H. Lubrication . . . . 1-2 I. Part Replacement . . . . 1-2 J. Inspection Records. . . . . 1-3 1.2 How To Use This Manual . . . . 1-3 A. Normal Use . . . . 1-3 B. Revision . . . . 1-3

(6)

1.1 General A. Purpose

The purpose of this manual is to provide detailed instructions on how to perform scheduled inspections of Hydril ram blowout preventers when they are not in service. For in-service inspections, refer to the BOP operator's manual.

B. Ram BOP Configuration

Instructions in this manual are provided for single ram BOPs with one ram compartment . Therefore, if the BOP being inspected has more than one ram com-partment, repeat the instructions as many times as necessary.

C. Initial Safety Precautions

WARNING: DO NOT OPEN THE BONNETS OF A RAM BOP UNLESS THE RAM BOP IS INSTALLED ON THE TEST STUMP OR SECURED TO THE FLOOR. THE WEIGHT OF AN OPEN BONNET CAN CAUSE AN UNSECURED BOP TO TURN OVER.

D. Part Identification

Parts referenced in this manual are identified by referring to Figures 4-2 through 4-5 in Section 4 of this manual. These figures contain exploded views and parts lists of typical ram blowout preventers, pipe rams, variable rams, and shear rams. However, these figures do not contain part numbers. For part numbers, refer to the part number stamped in the surface of the component. If the component does not have the part number stamped in its surface, refer to the parts list and assembly drawing in the BOP operator's manual.

E. Required Equipment

Adequate facilities and equipment are required to safely lift and move the assembled ram BOP and to pressure test the BOP. Hydril recommends the lifting configuration shown in Figure 1-1.

F. BOP Control System Requirements

Opening and closing of the BOP rams is accom-plished by applying hydraulic pressure to the Open or Close port on the BOP. When pressure is applied to the Open port, the Close port must be piped in a manner that allows the free flow of operator fluid from the BOP as the pistons move to open the rams. This requirement is the same for the application of hydrau-lic pressure to the Close port.

Figure 1-1 Ram BOP Lifting Confinguration Use light weight hydraulic oil or a mixture of clean fresh water and a fluid concentrate composed of soluble oil and rust inhibitor. In freezing temperatures (below 0oC /32oF), add antifreeze (ethylene glycol) to any fluid concentrate and water mixtures.

[CAU-TION: Do not use synthetic fluids or fuel oil. Use of

these will result in damage to the seals.] Use clean tap water as bore fluid.

G. Cleaning

Clean the ram BOP(s) as soon as possible after removing the BOP stack from the wellhead. Remove caked drilling mud and cuttings from the ram compartment(s) and exterior of the BOP with high pressure water or steam.

H. Lubrication

Lubricate all metal surfaces with light machine oil such as Gulf Harmony No. 46 or Exxon Coray 100 or equivalent. Use Never-Seez thread lubricant or equiva-lent with a coefficient of friction of .069. Coat all seals and nonextrusion rings with silicone grease or castor oil. CAUTION: Use of petroleum base oil or grease will reduce seal life.

I. Part Replacement

Only Hydril replacement parts should be used to insure expected performance and service life. Refer to the part number stamped on the part or to the parts lists in your BOP operator's manual.

(7)

Inspection forms are provided in Section 9. These forms are designed to be used along with the inspec-tion procedures. To make the recording of results easy, each form has step numbers that correspond to the steps used in the inspection procedure. Each form should be treated as a master for photocopying. Make as many copies as are needed.

1.2 How To Use This Manual A. Normal Use

This manual is designed to be used in conjunction with the BOP operator's manual for disassembly and as-sembly instructions, operation specifications, bolt torques, and part numbers. If an operator's manual is not available, contact Hydril Headquarters in Hous-ton, Texas for a copy (refer to Section 10 for address information). This manual is divided into sections for ease of use. The section headings are listed in the Table Of Contents at the front of this manual.

To use this manual, turn first to the inspection schedule in Section 2. Find the desired inspection interval on the schedule. The procedure for each inspection on the schedule is found in Sections 3 through 8. Find the inspection form in Section 9, photocopy it, and use it as you follow the correspond-ing inspection procedure. If the BOP requires major repairs that cannot be made in the field, contact Hydril at one of the Hydril Repair Facilities listed in Section 10.

B. Revision

Occasionally, Sections 1 through 10 of this manual may be revised. Revisions are identified in two ways. First, by a letter of the alphabet (Rev. A, B, C, etc.) on page 1 of each section and in the Revision Record. The Revision Record follows the Table Of Contents in the front of this manual.

Second, the revised portion will be indicated by an 8-pt. grey bar in the margin (see example in the left margin). This bar is intended to aid the user in finding the parts of the section that have been changed from the previous version.

Furthermore, to make the updating of this manual easier when revisions are made, whole sections will be replaced rather than individual revised pages.

NOTE: The revision letter indicated in the revision box

on page 1 of each section should match with the letter shown in the Revision Record. If not, contact Hydril

manual for the address, telephone, and FAX num-bers.

(8)

PAGE

2.1 General . . . . 2-2 2.2 Inspection Schedule . . . . 2-2

(9)

Inspection Interval Description Manual Section

AS REQUIRED 1. Inspect Visually. 3

2. Perform BOP Operating Test. 5

3. Perform Hydraulic System Test. 6

4. Perform Wellbore Pressure Test. 7

BETWEEN WELLS 1. Inspect Visually. 3

YEARLY 1. Disassemble BOP. *

2. Inspect Visually. 3

a. Replace All BOP Seals.**

b. Replace Ram Packers And Seals.**

3. Assemble BOP. *

FOUR YEARS 1. Disassemble BOP. *

2. Inspect By Gauge. 4

a. Replace BOP Spare Parts.** The inspection schedule provides the inspection

in-terval and type of inspection required in tabular form. The procedures for performing the inspections are located in Sections 3 through 8 (see Table Of Con-tents for listing). To use the schedule, find the inspection interval on the schedule and the associ-ated inspections. Next, photocopy the inspection form(s) from Section 9. Begin the inspections by turning to the section that contains the procedure for

performing the first inspection listed. Perform the inspection using the inspection form and the corre-sponding procedure. Continue to perform each in-spection in the same manner until all inin-spections have been completed.

2.2 Inspection Schedule

Refer to Table 2-1.

TABLE 2-1

(10)

b. Replace Ram Spare Parts.** c. Replace parts as required.**

3. Assemble BOP. *

6. Perform Wellbore Pressure Test. 7 7. Perform MPL Lock Test (MPL Models 8

Only).

* Refer to operator's manual for disassembly and assembly instructions.

** Parts for a typical ram BOP are listed in Figures 4-2 through 4-5 in Section 4. Recommended spare parts, including seals, are also indicated. Refer to the ram BOP operator's manual for part numbers.

(11)

3.0 VISUAL INSPECTION

PAGE

3.1 General . . . . 3-2 A. Inspection Record . . . . 3-2 B. Repairs . . . . 3-2 C. Cleaning . . . . 3-2 D. Handling . . . . 3-2 E. Inspection Criteria for Nuts, Studs, Bolts, and Threaded Holes . . . . 3-2 3.2 Visual Inspection Procedure . . . . 3-3

(12)

The procedures in this section cover the visual in-spection of the Hydril ram BOP.

A. Inspection Records

During the inspection of the ram BOP, keep records of the inspections and the actions taken. Use the inspection form(s) in Section 9.

B. Repairs

Minor repairs can be performed in the field. However, major repairs requiring welding must be performed at an approved Hydril Repair Facility. Refer to Section 10 for a list of facility locations.

C. Cleaning

Prior to inspection, clean caked drilling mud, loose rust, and scale from the exterior of the ram BOP with high pressure water or steam.

D. Handling

Lift the ram BOP using two slings of adequate strength in a basket configuration. Position the slings one on each side of the ram BOP from just inside the hinges, under the BOP body, and up the off hinge side (refer to Figure 3-1). CAUTION: To prevent damage, do not position slings under the multiple position locks or the manual locks when lifting the ram BOP.

WARNING: USE EXTREME CAUTION WHEN

LIFT-ING THE RAM BOP. THIS IS VERY HEAVY AND BULKY EQUIPMENT. DO NOT PLACE HANDS OR OTHR BODY MEMBERS WHERE THEY CAN BE INJURED BY CONTACT WITH OTHER EQUIPMENT DURING THE LIFTING OPERATION.

E. Inspection Criteria for Nuts, Bolts, and Threaded Holes.

Clean threads thoroughly because dirt and grit may account for symptoms that otherwise appear to be due to thread damage. Replace nuts and bolts if threads are damaged or if the hex surfaces are seriously rounded. A part with threaded holes with unacceptable threads may require replacement or repair of the part. Contact Hydril for advice. Refer to Section 10 for a list of Hydril Authorized Repair Facilities.

(13)

A. Tools and Materials Required

1. Emery cloth, 240 grit or finer

2. Light machine oil (Gulf Harmony No. 46 or Exxon Coray 100)

3. Never-Seez thread lubricant (coefficient of friction is .069) or equivalent

4. Inspection form(s) (refer to Section 9)

B. Inspection Procedure

Refer to Figure 3-2 while following this procedure. 1. Inspect the ring grooves and the mating

faces of the top connection, bottom connec-tion, and side outlets.

a. Inspect the ring grooves for pitting, scratches, indentations, and washouts. Minor damage to the grooves may be repaired in the field by polishing with 240 grit or finer emery cloth. After polishing, wipe ring groove with a clean cloth soaked in light machine oil. Any damage requir-ing weldrequir-ing or machinrequir-ing must be re-paired at a Hydril Authorized Repair Fa-cility. Record findings on the inspection form.

Figure 3-2. Typical Ram BOP — Visual Inspection Bolt Heads

Ring Groove & Mating Surfaces (Top & Bottom)

Studs and Nuts

TOP VIEW

SIDE VIEW

Ring Grooves & Mating Surfaces (Side Outlets) b. Inspect the mating faces for upset metal

and raised edges. Minor metal upset or raised edges can be repaired in the field by grinding until flush. Major metal upset or raised edges that require machining or welding must be repaired at a Hydril Authorized Repair Facility. Record find-ings on the inspection form.

c. Inspect outlets for interior wall collapse. 2. Inspect nut and bolt heads for damage. Re-place any nut or bolt that has hex corners on the head that are rounded off. If a nut or bolt requires replacement, apply Never-Seez thread lubricant to the threads of the new nut or bolt before installing. Refer to BOP operator's manual for torque specifications. 3. Clean the threads of any studs that are ex-posed and inspect the threads for cracks, galling, wear, and deformity. Replace as required. If a stud requires replacement, apply Never-Seez thread lubricant to the threads of the new stud before installing. Refer to BOP operator's manual for torque specifications.

(14)

Sealing Area

Bonnet Bolt Hole

Body

Figure 3-3. Ram BOP With Bonnet Open. Ram Bore Bonnet Bolt Ram Bonnet Bonnet Seal

WARNING: DO NOT OPEN A BONNET

UNLESS THE RAM BOP IS INSTALLED ON A SECURED TEST STUMP OR SECURED TO THE FLOOR. THE WEIGHT OF AN OPEN BONNET CAN CAUSE AN UNSE-CURED RAM BOP TO TIP OVER.

a. Inspect the area on the body where the bonnet seal contacts for pitting, scratches, and corrosion. Minor damage can be removed by polishing with 240 grit or finer emery cloth. After polishing, wipe surfaces with light machine oil. Any damage requiring welding or machining must be repaired at a Hydril Authorized Repair Facility. Record findings on the inspection form.

b. Inspect bottom surface of ram bore for damage and wear. Minor damage can be removed by polishing with 240 grit or finer emery cloth. After polishing, wipe surfaces with light machine oil. Any damage requiring welding or machining must be repaired at a Hydril Authorized Repair Facility. Record findings on the inspection form.

5. Inspect the bonnet as follows:

a. Remove the bonnet seal and Inspect the bonnet seal groove for pitting, scratches, indentations, and washouts. Minor dam-age can be removed by polishing with 240 grit or finer emery cloth. After polish-ing, wipe groove clean with light machine oil. Any damage requiring welding or machining must be repaired at a Hydril Authorized Repair Facility. Record find-ings on the inspection form.

b. Inspect front and back of bonnet seal for cracks, cuts, hard skin, and deformity. Replace seal if necessary. Record find-ing on inspection form.

c. Clean and inspect the threads of the bonnet bolts for cracks, galling, wear, and deformity. Replace any damaged bolt. Lubricate threads with Never-Seez thread lubricant.

d. Clean and inspect the threads of the bonnet bolt holes in the body of the ram BOP for damage and wear. If threads are damaged or worn, contact a Hydril Authorized Repair Facility.

(15)

Pipe Ram Variable Ram

Packer

Top Seal

Shear Ram Assemblies

Packer Top Seal

Upper Shear Blade

Lower Shear Blade Lateral T-Seal

Top Seal 6. Inspect the pipe ram, shear ram, variable

ram as follows:

NOTE: If replacement of parts is required,

refer to the disassembly and assembly pro-cedures in the BOP operator's manual. Re-fer to the operator's manual for part numbers.

a. Pipe Ram and Variable Ram:

1) Inspect front packer on ram assem-bly for wear, cracking, and hard skin. Check variable ram packers for insert separation. Replace if necessary. Record findings on the inspection form. 2) Inspect top seal groove and vertical packing slots for burrs. Remove burrs with 240-grit emery cloth. Wipe clean with rag soaked in light machine oil. 3) Inspect upper seal on pipe ram as-sembly for wear, cracking, and hard skin. Replace if necessary. Record findings on the inspection form.

4) Inspect bottom surface of pipe ram for wear and pitting. Minor damage can be removed by buffing. After buffing, wipe surfaces with light machine oil. Any damage requiring welding or machining must be repaired at a Hydril Authorized

Repair Facility. Record findings on the inspection form.

b. Shear Ram:

1) Inspect shear blades for wear and damage. Replace if necessary. Record findings on the inspection form.

2) Inspect lateral T-Seal for wear, crack-ing, and hard skin. Replace if neces-sary. Record findings on the inspection form.

3) Inspect upper seal on shear ram assembly for wear, cracking, and hard skin. Replace if necessary. Record findings on the inspection form.

4) Inspect bottom surface of shear ram for wear and pitting. Minor damage can be removed by polishing with 240 grit or finer emery cloth. After polishing, wipe surfaces with light machine oil. Any damage requiring welding or machining must be repaired at a Hydril Authorized Repair Facility. Record findings on the inspection form.

5) Inspect sealing surface of lower car-rier for scaring and pitting. Minor dam-age can be removed by polishing with

(16)

ing, wipe surfaces clean with light ma-chine oil. For major damage, contact a Hydril Authorized Repair Facility. Record findings on the inspection form.

7. Retract ram assembly and close the bonnet. Torque the bonnet bolts as per Section 10. 8. Open, visually inspect, and close the

remain-ing bonnets as instructed above, beginnremain-ing with Step 4.

(17)

PAGE

4.1 General . . . . 4-2 A. Inspection Record . . . . 4-2 B. Repairs . . . . 4-2 C. Cleaning . . . . 4-2 D. Handling . . . . 4-2 E. Part Identification and Replacement . . . . 4-2 4.2 Gauge Inspection . . . . 4-11

A. Tools And Materials Required . . . . 4-11 B. Inspection Procedure . . . . 4-11 C. Wear Limits . . . . 4-24

(18)

The procedures in this section cover the gauge in-spection of the Hydril ram BOP. To complete this inspection, the ram BOP operator's manual is re-quired for disassembly, assembly, and part number identification. If a manual is not available, contact the nearest Hydril Repair Facility for a copy. Refer to Section 10 for a list of locations.

A. Inspection Records

During the inspection of the ram BOP, keep records of the inspections and the actions taken. Use the inspection form(s) in Section 9.

B. Repairs

Minor repairs can be performed in the field. However, major repairs requiring welding must be performed at an approved Hydril Repair Facility. Refer to Section 10 for a list of locations.

C. Cleaning

Prior to inspection, clean caked drilling mud, loose rust, and scale from the exterior of the ram BOP with high pressure water or steam.

D. Handling

Lift the ram BOP using two slings of adequate strength in a basket configuration. Position the slings one on each side of the ram BOP from just inside the hinges, under the BOP body, and up the off hinge side (refer to Figure 4-1). CAUTION: To prevent damage, do not position slings under the multiple position locks or the manual locks when lifting the ram BOP.

WARNING: USE EXTREME CAUTION WHEN

LIFT-ING THE RAM BOP. THIS IS VERY HEAVY AND BULKY EQUIPMENT. DO NOT PLACE HANDS OR OTHER BODY MEMBERS WHERE THEY CAN BE INJURED BY CONTACT WITH OTHER EQUIPMENT DURING THE LIFTING OPERATION.

E. Part Identification and Replacement

The parts of a typical Hydril ram BOP are illustrated in Figures 4-2 and 4-3 for the purpose of identifying the components that are discussed in the Gauge Inspec-tion Procedure. Although the parts are identified by name, quantity, and recommended spares, no part numbers are provided. Refer to the illustrated parts lists in the ram BOP operator's manual for accurate representation and part numbers.

(19)

Figure 4-2. Typical Hydril Ram BOP With Manual Lock.

Qty. Per Cavity**

Rec. Spare Part Item

No. Part Name*

1 Year 4 Year

1 Body, Single 1 2 Nameplate (not shown) 1 3 Screw, Drive (not shown) 4 4 Seat, upper Seal 1 5 Ring, Lock 1

6 O-Ring, Lower, Seat To Body 1 1 1 7 Backup Ring, Lower, Seat To Body 1 1 1 8 O-Ring, Upper, Seat To Body * 1 1 1 9 Screw, Socket Head Set, Seal Seat*** 4** 4** 10 Hydraulic Connection 1

11 O-Ring, Hydraulic Connection 2 2 2 12 Cap Screw, Socket Head *** 8

(20)

Figure 4-2 Continued

13-20 Reserved For Future Use

21 Hinge, Load 2 22 Pin, Locator 4 23 Cap Screw, Socket Head *** 8 24 Hinge, fluid 2 25 Sub, Fluid Hinge 4

26 O-Ring, Sub To Bonnet Hinge 4 4 4 27 Sub, Energizer 4

28 O-Ring, Sub To Energizer 4 4 4 29 Back-Up Ring, Sub To Energizer 4 4 4 30 O-Ring, Energizer To Fluid Hinge 4 4 4 31 Back-Up Ring, Energizer To Fluid Hinge 4 4 4

32 Spring 4

33 Screw, Socket Head Set, Fluid Hinge *** 4 34 Plug, Hex Head Pipe 4

35 O-Ring, Fluid Hinge To Body 4 4 4 36 Cap Screw, Hex Head *** 4

37 Bearing, Hinge Pin 4 4 4 38 Washer, Thrust 4 4 4 39 Washer, Fluid Hinge 4

40 O-Ring, Fluid Hinge To Bonnet Hinge 4 4 4 41-50 Reserved For Future Us

51 Ram Assembly 1 set

52 Bonnet 2

53 Bolt, Bonnet 20

54 Retainer, Bonnet Bolt 20 20 20 55 Seal, Bonnet 2 2 2 56 Pin, Ram Guide 4

57 Seal, Piston Rod Mud 2 2 2 58 Ring, Spacer 2 2 2 59 Ring, Retainer 2 2 2 60 Seal, Bonnet To Piston 2 2 2 61 Pin, Hinge 4

62 O-Ring, Hinge Pin 4 4 4 63 O-Ring, Pin 8 8 8 64 Screw, Socket Head Set, Hinge Pin 4

65 Ring, Plastic Packing ▼ 2 2 2 66 Ring, Plastic Energizing ▼ 2 2 2 67 Valve, Check ▼ 2 2 2 68 Packing, Plastic ▼ 2 2 2 69 Screw, Socket Head Set ▼ 2 2 70 Plug, Hex Head Pipe

71 Hinge, Bonnet 2 72 Hinge, Bonnet 2 73 Cap Screw, Bonnet Hinge *** 16

74 O-Ring, Bonnet Hinge 4 4 4 75-80 Reserved For Future Use

121 Piston, Manual Lock 2

122 Seal, Piston 4 4 4 123 Lock, Mechanical 2

No. Part Name*

(21)

124 Washer, Thrust 2

125 O-Ring, Cylinder Liner To Bonnet 2 2 2 126 Liner, Cylinder 2

127 O-Ring, Cylinder To Bonnet 2 2 2 128 Ring, Retaining 2 2 2 129 Ring, Spacer 2 2 2 130 Seal, Cylinder To Mechanical Lock 2 2 2 131 Stud, Cylinder 12

132 Nut, Heavy Hex 12 133 Cylinder, Manual Lock 2

134 Scraper 2 2 2

▼ Available on models used in surface applications only. * Item has been deleted on some BOPs.

** Quantities vary per BOP. Refer to ram BOP operator's manual.

*** Use only Hydril replacement parts. Commercial grade fasteners will fail in service due to the loads experienced.

No. Part Name*

(22)

1 Body, Single 1 2 Nameplate (not shown) 1 3 Screw, Drive (not shown) 4 4 Seat, Upper Seal 1

5 Ring, Lock 1

6 O-Ring, Lower, Seat To Body 1 1 1 7 Backup Ring, Lower, Seat To Body 1 1 1 8 O-Ring, Upper, Seat To Body * 1 1 1 9 Screw, Socket Head Set, Seal Seat *** 4** 4** 10 Hydraulic Connection 1

11 O-Ring, Hydraulic Connection 2 2 2 12 Cap Screw, Socket Head *** 8

Figure 4-3. Typical Hydril Ram BOP With MPL

52

No. Part Name*

(23)

21 Hinge, Load 2 22 Pin, Locator 4

23 Cap Screw, Socket Head *** 8 8 24 Hinge, fluid 2

25 Sub, Fluid Hinge 4 4 4 26 O-Ring, Sub To Bonnet Hinge 4 4 4 27 Sub, Energizer 4 4 4 28 O-Ring, Sub To Energizer 4 4 4 29 Back-Up Ring, Sub To Energizer 4 4 4 30 O-Ring, Energizer To Fluid Hinge 4 4 4 31 Back-Up Ring, Energizer To Fluid Hinge 4 4 4

32 Spring 4

33 Screw, Socket Head Set, Fluid Hinge *** 4 4 34 Plug, Hex Head Pipe 4

35 O-Ring, Fluid Hinge To Body 4 4 4 36 Cap Screw, Hex Head *** 4 4 37 Bearing, Hinge Pin 4 4 38 Washer, Thrust 4 4 39 Washer, Fluid Hinge 4 4 40 O-Ring, Fluid Hinge To Bonnet Hinge 4 4 4 41-50 Reserved For Future Us

51 Ram Assembly 1 set

52 Bonnet 2

53 Bolt, Bonnet 20

54 Retainer, Bonnet Bolt 20 20 20 55 Seal, Bonnet 2 2 2 56 Pin, Ram Guide 4

57 Seal, Piston Rod Mud 2 2 2 58 Ring, Spacer 2 2 2 59 Ring, Retainer 2 2 2 60 Seal, Bonnet To Piston 2 2 2 61 Pin, Hinge 4

62 O-Ring, Hinge Pin 4 4 4 63 O-Ring, Pin 8 8 8 64 Screw, Socket Head Set, Hinge Pin 4

65 Ring, Plastic Packing ▼ 2 2 2 66 Ring, Plastic Energizing ▼ 2 2 2 67 Valve, Check ▼ 2

68 Packing, Plastic ▼ 2 2 2 69 Screw, Socket Head Set ▼ 2 2 70 Plug, Hex Head Pipe

71 Hinge, Bonnet 2 72 Hinge, Bonnet 2 73 Cap Screw, Bonnet Hinge*** 16

74 O-Ring, Bonnet Hinge 4 4 4 75-80 Reserved For Future Use

135 Piston, MPL 2

136 Seal, Piston 4 4 4

No. Part Name*

(24)

137 Cylinder, MPL 2

138 O-Ring, Cylinder To Bonnet 2 2 2 139 Liner, Cylinder 2

140 O-Ring, Cylinder Liner To Bonnet 2 2 2 141 Stud, Cylinder 12

142 Nut, Heavy Hex 12 143 Nut, Lock 2 144 Screw, Lock 2 145 Plate, Retainer 2 146 Plate, Front Clutch 2

147 Capscrew, Sock. Hd. Front Clutch Plt.*** 16 16 148 Plate, Rear Clutch 2

149 Bearing, Lock Nut 4 4 150 Spring, Clutch 16

151 Key, Rear Clutch Plate 8

152 O-Ring, Cylinder Head Dirt Seal 2 2 2 153 Backup Ring, Cylinder Liner To Bonnet 4 4 4 154 Head, Cylinder MPL 2

155 O-Ring, Cylinder Head 2 2 2 156 Cap Screw, Cylinder Head 16

157 Pin, Locating, Bonnet (Not Shown) 2 158 Pin, Locating, Retainer Plate 2 159 Stem, Lockout 4 160 Gland, Lockout 4 161 Segment, Lockout 4

162 O-Ring, Lockout Stem 4 4 4 163 Backup Ring, Lockout Stem 4 4 4 164 Ring, Transfer 2

No. Part Name*

1 Year 4 Year

▼ Available on models used in surface applications only. * Item has been deleted on some BOPs.

** Quantities vary per BOP. Refer to ram BOP operator's manual.

*** Use only Hydril replacement parts. Commercial grade fasteners will fail in service due to the loads experienced.

(25)

VARIABLE RAM ASSEMBLY

1 2 4

3

PIPE RAM ASSEMBLY

Figure 4-4. Pipe Ram Assembly

1 Ram Assembly 2 2 Ram Block 2 3 Front Packer 2 1 1 4 Upper Seal 2 1 1 Qty. Per Cavity

No. Part Name

1 Year 4 Year

2 4 1

(26)

1 Upper Blade Shear Ram Block 1 2 Upper Shear Blade 1

3 Upper Blade Cap Screw* 4** 4 4 Upper Blade Top Seal 1 1 1 5 Alignment Pin 2

6 Upper Blade Set Screw* 3

7 Alignment Pin Set Screw* 2 2 8 Lateral T-Seal 1 1 1 9 Not Used

10 Lower Blade Shear Ram Block 1 11 Lower Shear Blade 1

12 Lower Blade Cap Screw* 2 2 13 Lower Blade Top Seal 1 1 1 14 Anti-extrusion Block 2

Figure 4-5. Shear Ram Assembly

Qty. Per Cavity

No. Part Name

1 Year 4 Year

* Use only Hydril replacement parts. Commercial grade fasteners will fail in service due to the loads experienced.

** Quantity varies per BOP. Refer to ram BOP operator's manual.

UPPER BLADE SHEAR RAM ASSEMBLY LOWER BLADE SHEAR RAM ASSEMBLY

(27)

A. Tools and Materials Required

1. Emery cloth

2. Light machine oil (Gulf Harmony No. 46 or Exxon Coray 100)

3. Never-Seez thread lubricant (coefficient of friction is .069) or equivalent

4. Inspection form(s) (refer to Section 9 ) 5. Spare parts (refer to Figures 4-2, 4-3, 4-4,

and 4-5)

B. Inspection Procedure

Refer to Figures 4-2, 4-3, 4-4, and 4-5 while following this procedure. Refer to the figure that corresponds most closely to the ram BOP being inspected. Figure 4-2 has a manual ram lock and Figure 4-3 has a multiple position ram lock (MPL).

1. Disassemble the ram BOP completely fol-lowing the procedure in the BOP operator's manual. Replace all parts indicated as spare parts (refer to Figures 4-2 and 4-3). 2. Clean remaining parts thoroughly and

pre-pare them for inspection.

3. If the ram BOP is equipped with a MPL (multiple position lock), continue with the next step. If equipped with a manual lock, continue to step 7.

4. Inspect the MPL locknut assembly (items 143, 149, 158, 145, 150, 148, 146, and 147 of Figure 4-3).

a. Inspect the lock nut (item 143 of Figure 4-3). Refer also to Figure 4-6

1) Inspect the two bearing surfaces. The bearing surface should be smooth with no gouges or scratches.

2) Measure the thickness of the shoul-der. The thickness should not be less than minimum thickness listed in Table 4-1.

3) Inspect the threads in the thread holes for damage. Record the results on the inspection form.

4) Inspect the through bore threads for damage. Minor ridging of the threads due to wear is acceptable, but not heavy galling or wear. Install the lock nut onto the lock screw (item 144 of Figure 4-3) with timing marks aligned. The lock nut should fit easily on the lock screw and rotate down the length of the lock screw by hand. Record the condition on the

Figure 4-6. MPL Locknut (item 143, Figure 4-3) Minimum Thickness Bearing Surfaces Front Rear

(28)

inspection form.

5) Replace the lock nut if damaged or worn beyond the conditions stated in steps 1) through 4) above. Refer to the ram BOP operator's manual for the part number.

b. Inspect the retainer plate (item 145 of Figure 4-3). Refer also to Figure 4-7.

NOTE: Do not remove the retainer plate

locating pin (item 158 of Figure 4-3). Inspect it for wear and straightness.

1) Inspect the bearing surface. It should be smooth and flat. Record condition on inspection form.

2) Inspect surface A and the key slots for burrs. It should be polished smooth with emery cloth. Record the condition on the inspection form.

3) Inspect Surface B for corrosion. Re-move corrosion with emery cloth. Record condition on inspection form.

c. Inspect front clutch plate (item 146 of Figure 4-3). Refer also to Figure 4-8.

1) Inspect all clutch teeth for dings and dents. CAUTION: Do not attempt repair if damage is present. Replace the clutch plate. Refer to BOP operator's manual for the part number.

2) Measure clutch teeth. If any tooth is worn below the minimum height shown in Table 4-1, replace the clutch plate. Refer to BOP operator's manual for the part number. 3) Record the condition of the front clutch plate on the inspection form.

d. Inspect rear clutch plate (item 148 of Figure 4-3). Refer also to Figure 4-8.

1) Inspect all clutch teeth for dings and dents. CAUTION: Do not attempt repair if damage is present. Replace the clutch plate. Refer to BOP operator's manual for the part number.

2) Measure clutch teeth. If any tooth is worn below the minimum height shown in Table 4-1, replace the clutch plate. Refer to BOP operator's manual for the part number. 3) Record the condition of the rear clutch plate on the inspection form.

Bearing Surface

Retainer Locating Pin

Figure 4-7. Retainer Plate (Item 145 of Figure 4-3) Key Slot Surface A Surface B Minimum Teeth Height

Figure 4-8. MPL Clutch Plate (items 146 and 148 of Figure 4-3)

(29)

of Figure 4-3).

1) Without removing the pin from the re-tainer plate (item 145), inspect the protruding end for rounded-off edges. Replace if neces-sary. Refer to BOP operator's manual for part number.

2) Record results on inspection form. 5. Inspect the MPL cylinder assembly (items 137,

142, 154, 156, 159, 160, 162, and 163 of Figure 4-3).

a. Inspect the MPL cylinder (item 137 of Figure 4-3). Refer also to Figure 4-9.

1) Inspect the seal groove and the sealing surfaces for smoothness. Remove minor pits and scores up to a depth of .015 in (.38 mm) with emery cloth. If major pits and scores are present, contact a Hydril Repair Facility. Refer to Section 10 for a list of locations.

2) Inspect the threaded holes for thread damage such as galling. If damage is present, contact a Hydril Repair Facility. Refer to Section 10 for a list of locations.

3) Record results on the inspection form. b. Inspect the lockout stem (item 159 of Figure

4-3).

1) Inspect the internal threads for damage. 2) Inspect the seal groove for corrosion, nicks, and dings.

3) Inspect square end for damage. 4) Replace the lockout stem if any damage inspected for above is present. Refer to BOP operator's manual for part number.

5) Record the results on the inspection form. c. Inspect the lockout gland (item 160 of Figure

4-3).

1) Inspect the threads on the outside diam-eter of the gland for burrs.

2) Inspect the corners of the hex for rounded-off corners.

3) Replace gland if damage above is present.

Figure 4-9. MPL Cylinder (Item 137 of Figure 4-3)

Seal Groove Sealing Surfaces

(30)

emery cloth as required to remove nicks. 5) Record condition on inspection form. d. Inspect the cylinder head (item 154 of Figure

4-3). Refer also to Figure 4-10 .

1) Inspect the O-ring seal groove and dirt seal groove. Both grooves should be smooth and flat. Remove minor dings, gouges, and pitting up to a depth of .015 in (.38 mm) with emery cloth. For major damage, contact the nearest Hydril Repair Facility. Refer to Sec-tion 10 for a list of locaSec-tions.

2) Smooth the bearing surface with emery cloth as necessary. Measure the depth of the bearing pocket. The depth should be less than shown in Table 4-1. If the depth is more, contact the nearest Hydril Repair Facility. Refer to Section 10 for a list of locations. 3) Record the condition of the cylinder head on the inspection form.

6. Inspect the piston and lock screw assembly (items 135, 136, 138, 139, 140, 144, 153, 161, and 164 of Figure 4-3).

a. Inspect the cylinder liner (item 139 of Figure 4-3). Refer also to Figure 4-11.

1) Inspect the inside diameter for pits, dings, gouges, and wear. Repair minor damage up to a depth of .005 in (.13 mm) with emery cloth. Measure the inside diameter of the cylinder liner. The diameter should be less than the maximum inside diameter shown in Table 4-1. If the diameter is more, replace the cylinder liner.

2) Inspect the inside diameter of the piston entry bevels and the seal groove for pits, handling damage, and gouges. Repair minor damage up to a depth of .015 in (.38 mm) with emery cloth.

3) Inspect cylinder shoulder for burrs and flattened edges. Rework shoulder with a file to return it to its original contour if necessary. Also inspect for line scores and chips in the chrome.

4). Measure the outside diameter of the seal groove. The diameter should be greater than shown in Table 4-1. If less, replace the cylinder liner.

5) For major damage, contact a Hydril Re-pair Facility. Refer to Section 10 for a list of locations.

6) Record condition of cylinder liner and any rework performed on the inspection form.

Bearing Pocket Max. Depth Bearing Pocket O-Ring Seal Groove (155) Dirt Seal Groove (152) Min. Seal Groove O.D.

Figure 4-11. Cylinder Liner (Item 139 of Figure 4-3) Cylinder Shoulder Max. I.D. Seal Groove Entry Bevels

Figure 4-10. Cylinder Head (Item 154 of Figure 4-3)

(31)

4-3). Refer also to Figure 4-12.

1) Inspect transfer ring for corrosion and deformity. Remove minor corrosion with fine emery cloth. Replace if deformed.

2) Measure the thickness of the ring. Refer to Table 4-1 for minimum thickness. Replace if thickness is less.

3) Record condition and thickness on in-spection form.

c. Inspect lockout segment (item 161 of Figure 4-3). Refer also to Figure 4-13.

1) Inspect radius at the base of the threaded stem for cracks.

2) Inspect for damage to threads.

3) Inspect both sides for rounded-off edges. 4) Replace if any of the damage listed above is present.

5) Record condition on inspection form. d. Inspect piston (item 135) and lock screw

(item 144 of Figure 4-3). Refer also to Figure 4-14.

1) Inspect surface A of the piston for pitting, dings, and gouges. Repair minor damage [less than .005 in (.13 mm) deep] with emery cloth. Replace piston if major damage is present.

2) Inspect piston rod for straitness. The rod must be perfectly straight. Verify that end of piston rod is perpendicular to shaft. Replace if necessary. Measure the outside diameter of the piston rod. If it is less than shown in Table 4-1, replace it.

3) Measure the large outside diameter of the piston on the center most land of the three lands. The diameter should not be less than the minimum piston diameter shown in Table 4-1 . Replace if less.

4) Inspect seal grooves for smoothness, pitting, and dings. Repair minor damage with emery cloth. Replace piston if major damage is present.

5) Gauge the screw for wobble or wear by measuring the side to side movement of the matching nut. More than .060 inch move-ment is cause for replacemove-ment. NOTE: Nor-mally, it is nearly impossible to disassemble the lock screw from the piston without the proper tools. Contact a Hydril Repair Facility for instructions. Refer to Section 10 for a list of locations.

6) Inspect area around the lock screw shoul-der for cracks. Replace if cracks are present.

Figure 4-14. Piston And Lock Screw (Items 135 and 144 of Figure 4-3)

Figure 4-12. Transfer Ring (Item 164 of Figure 4-3) Minimum Thickness Inspect for Cracks Inspect Both Sides For Rounded-off Edges

Figure 4-13. Lockout Segment (Item 161 of Figure 4-3)

Min. Rod O.D. Min. Piston O.D. Lock Screw Inspect For Cracks Seal Grooves Piston Rod Surface A

(32)

spection form.

7. If the ram BOP is equipped with a manual lock assembly (items 121 through 134 of Figure 4-2), inspect it as follows. If the ram BOP is equipped with a MPL, skip this step and continue to step 8. a. Inspect the manual lock cylinder (item 133 of

Figure 4-2). Refer also to Figure 4-15. 1) Inspect the seal groove for the cylinder to bonnet seal (item 127 of Figure 4-2) for pitting, dings, and gouges. Repair minor damage with emery cloth. If major damage is present, replace the cylinder. Refer to the ram BOP operator's manual for the part num-ber.

2) Measure the inside diameter of the cylin-der. The inside diameter should be less than the maximum bore shown in Table 4-1. If greater, contact a Hydril Repair Facility. Refer to Section 10 for a list of locations.

3) Record condition on inspection form. b. Inspect the cylinder liner (item 126 of Figure

4-2). Refer also to Figure 4-16.

1) Inspect the seal groove for the cylinder liner to bonnet seal (item 125 of Figure 4-2) for pitting, dings, and gouges. Repair minor damage with emery cloth. If major damage is present, replace the cylinder liner. Refer to the ram BOP operator's manual for the part number.

2) Record condition on inspection form. c. Inspect the mechanical lock piston assembly

(items 121 and 123 of Figure 4-2). Refer also to Figure 4-17.

1) Inspect the unthreaded surface of the mechanical lock for scars, dings, and gouges. Make minor repairs with emery cloth. Re-place if major damage is present. NOTE: Normally, it is nearly impossible to disas-semble the lock screw from the piston without the proper tools. Contact a Hydril Repair Facility for instructions. Refer to Section 10 for a list of locations.

2) Measure the diameter of the unthreaded rod of the mechanical lock screw. The diam-eter should be greater than the minimum rod outside diameter shown in Table 4-1. If the diameter is less, replace the mechanical lock screw. NOTE: Normally, it is nearly impos-sible to disassemble the lock screw from the piston without the proper tools. Contact a Hydril Repair Facility for instructions. Refer to Section 10 for a list of locations.

Inside Diameter

Seal Groove

Figure 4-15. Manual Lock Cylinder (item 133 of Figure 4-2)

Figure 4-16. Manual Lock Cylinder Liner (item 126 of Figure 4-2)

(33)

Figure 4-17. Manual Lock Piston and Lock Screw Assembly (items 121 and 123 of Figure 4-2)

Piston Rod Surface A Min. Rod Dia.

Seal Grooves Inspect for Cracks Lock Screw Minimum Piston O.D. Minimum Dia. (item 123 of Figure 4-2). Refer also to Figure

4-17.

1) Inspect surface A of the piston for pitting, dings, and gouges. Repair minor damage [less than .005 in (.13 mm) deep] with emery cloth. Replace piston if major damage is present.

2) Inspect piston rod for straitness. The rod must be perfectly straight. Verify that end of piston rod is perpendicular to shaft. Replace if necessary. Measure the outside diameter of the piston rod. If it is less than shown in Table 4-1, replace it.

3) Measure the large outside diameter of the piston on the center most land of the three lands. The diameter should not be less than the minimum piston diameter shown in Table 4-1 . Replace if less.

4) Inspect seal grooves for smoothness, pitting, and dings. Repair minor damage with emery cloth. Replace piston if major damage is present.

5) Gauge the screw for wobble or wear by measuring the side to side movement of the matching nut. More than .060 inch move-ment is cause for replacemove-ment. NOTE: Normally, it is nearly impossible to disas-semble the lock screw from the piston with-out the proper tools. Contact a Hydril Repair Facility for instructions. Refer to Section 10 for a list of locations.

6) Inspect area around the lock screw shoul-der for cracks. Replace if cracks are present. 7) Record results of inspections on the inspection form.

(34)

Figure 4-20. Hinge Pin (Item 61 of Figures 4-2 and 4-3) Surface Bonnet Hinge Mounting Face Sealing Surface Sealing Surface

Figure 4-18. Bonnet Hinge (Items 71 and 72 of Figures 4-2 and 4-3)

Bearing Surfaces Figure 4-19. Bonnet Hinge Measurement

Upper Bonnet Hinge Lower Bonnet Hinge Distance Between Hinges 61, 62, 63, 71, 72, 74, and 75 of Figures 4-2 and 4-3).

a. Inspect bonnet hinges (items 71 and 72 of Figures 2 and 3. Refer also to Figures 4-18 and 4-19.

1) Measure the distance between the bon-net hinges. The distance should be less than shown in Table 4-1. If the distance is more, replace the hinges.

2) Inspect all sealing surfaces for corrosion and damage. Repair minor damage up to a depth of .015 in (.38 mm) with emery cloth. Replace hinges if major damage is present. 3) Inspect hydraulic fluid passage for build up. Clean as required to assure full fluid flow. 4) Inspect threads for galling or tearing. Replace bonnet hinges that have damaged threads.

5) Inspect flatness of bonnet hinge mount-ing face. The face should be flat within .015 in (.38 mm) after cleaning.

6) Record inspection results on inspection form.

b. Inspect hinge pin (item 61 of Figures 4-2 and 4-3). Refer also to Figure 4-20.

1) Inspect all seal grooves for corrosion. 2) Inspect the threads for galling and tears. 3) Inspect the hex head for rounded-off edges.

4) Replace the hinge pin if any of the condi-tions listed above are present.

5) Record the conditions on the inspection form.

(35)

56, 57, 58, 59, and 60 of Figures 4-2 and 4-3). a. Inspect bonnet (item 52 of Figures 2 and

4-3. Refer also to Figure 4-21.

1) Inspect the bonnet seal groove for corro-sion, pitting, and dings. Repair minor dam-age with emery cloth. Measure the depth of the bonnet seal groove. The depth should not exceed the maximum depth shown in Table 4-1.

2) Inspect the piston rod bore for pitting, dings, and gouges. Repair minor damage of less than .015 in (.38 mm) in depth with emery cloth.

3) Measure the piston rod bore diameter with pitting and corrosion removed. The diameter should not exceed the maximum diameter shown in Table 4-1.

4) Measure the diameter of the cylinder liner bore. The diameter should not exceed the maximum diameter shown in Table 4-1. 5) Inspect the pilot surfaces for the cylinder (item 137 of Figure 4-3) and the cylinder liner (Item 126 of Figure 4-2 and item 139 of Figure 4-3) for pitting, dings, and gouges. Repair minor damage of less than .010 in (.25 mm) with emery cloth.

6) Smooth the seal surface with emery cloth where the bonnet hinge O-rings (item 74 of Figures 4-2 and 4-3) contact the bonnet. 7) Inspect all hydraulic fluid passages for any buildup. Clean as required to assure full flow.

8) Inspect the cylinder studs (item 131 of Figure 4-2 and item 141 of Figures 4-3) for damaged threads.

Repair or replace as required.

9) Clean and inspect the threaded holes for thread damage.

10) If the bonnet cannot be repaired as di-rected above or wear exceeds specifica-tions, contact a Hydril Repair Facility. Refer to Section 10 for a list of locations.

11) Record conditions on the inspection form. b. Inspect the ram guide pin (item 56 of Figures

4-2 and 4-3).

1) Inspect the pins for wear and damage. Repair minor nicks, burrs, and gouges with a file. If the sides that support the rams are wearing flat, measure the diameter of the pin across the flat. The diameter should not be less than the minimum diameter shown in Table 4-1.

Figure 4-21. Bonnet (Item 52 of Figures 4-2 and 4-3) HINGE SIDE Seal Surface Pilot Surfaces Cylinder Liner Bore Dia. Maximum Piston Rod Dia. Bonnet Seal Groove

(36)

}

pins should be perpendicular to the bonnet face. If one is bent, lay a straightedge along the concave side of the bent pin and measure the standoff distance with a feeler gauge. Straighten or replace the pin if the standoff is greater than .060 in (1.52 mm).

3) Record condition on the inspection form. 10. Inspect the load hinge assembly (items 21, 23,

37, and 38 of Figures 4-2 and 4-3).

a. Inspect the load hinge (item 21 of Figures 4-2 and 4-3). Refer also to Figure 4-4-24-2. 1) Inspect bearing and seal surfaces for corrosion. Remove corrosion with emery cloth.

2) Record condition on inspection form. 11. Inspect the remaining operator and bonnet

com-ponents by repeating this procedure. Begin with Step 4 if the ram BOP is equipped with a MPL or with Step 7 if the ram BOP is equipped with a manual lock. If both sets of operator and bonnet components have been inspected, continue to the next step.

12. Inspect seal seat assembly (items 4, 5, 6, 7, 8, and 9 of Figures 4-2 and 4-3).

a. Inspect seal seat (item 4 of Figures 4-2 and 4-3). Refer also to Figure 4-23. Repair if possible. Otherwise, replace it.

1) Inspect O-ring grooves for damage. Repair minor damage with emery cloth.

NOTE: Some seats do not have an O-ring

groove in the top edge.

2) Inspect lower surface finish for gouges, pitting, and dings. Repair damage less than .015 in (.38 mm) in depth with emery cloth. 3) Inspect the flatness of the seal seat up-per surface. The upup-per surface should be flat within .005 in (.13 mm).

4) Inspect the set screw threaded holes for corrosion.

5) Measure the maximum thickness of the ram sealing flange. Refer to Table 4-1 for the dimension.

6) Inspect and clean the groove for the lock ring.

7) Record condition inspection form.

Seal Surface Bearing Surfaces

Figure 4-23. Seal Seat (Item 4 of Figures 4-2 and 4-3.

Ram Sealing Flange Figure 4-22 Load Hinge (Item 21 of Figures 4-2 and 4-3) Upper Surface O-Ring Groove Lower Surface

(37)

R R OPEN CLOSE OPEN CLOSE Top View Studded Top Connection Hydraulic Connections Ring Grooves Fluid Hinge Sealing Area Bolt Holes Flanged Bottom Connection BOTTOM VIEW SIDE VIEW

Figure 4-24. BOP Body (Item 1 of Figures 4-2 and 4-3)

Refer also to Figures 4-24 through 4-26.

a. Inspect the ring grooves on the top, bottom, and side connections for wear and damage. Minor damage (nicks and scratches not ex-ceeding .015 in (.38 mm) to the grooves may be polished with emery cloth. After polishing, wipe ring groove with a clean cloth soaked in light machine oil. Nicks and scratches ex-ceeding .015 in (.38 mm) must be repaired at a Hydril Repair Facility (refer to Section 10 for a list of locations).

b. Inspect threaded stud and bolt holes for signs of wear and damage. If wear or dam-age is present, contact a Hydril Repair Facil-ity for instructions. Refer to Section 10 for a list of locations.

c. Inspect sealing surfaces where fluid hinges, bonnet hinges, and hydraulic connections mount. Surfaces should be clean and free of pits. Polish out any minor irregularities using emery cloth. If major damage is present, contact a Hydril Repair Facility for instruc-tions. Refer to Section 10 for a list of loca-tions.

d. Inspect body where bonnet seal (item 55 of Figures 4-2 and 4-3) contacts for corrosion, pitting, and scratches (refer to Figure 4-25). Remove any corrosion, minor scratches, or minor pitting with emery cloth. Nicks and scratches exceeding .015 in (.38 mm) must be repaired at a Hydril Repair Facility (refer to Section 10 for a list of locations). Check flatness of areas with a straight edge and feeler gauges. Record findings on the in-spection form.

e. Inspect hydraulic operator fluid passages and flush out to ensure full flow.

Stud Holes Ring Groove Ring Groove Bolt Holes

(38)

F of Figure 4-26) of the seal seat sealing surfaces (item 4 of Figures 4-2 and 4-3) for flatness, pitting, dings, and gouges. Repair minor damage with emery cloth. The flat-ness should be within .010 in (.25 mm). If major damage is present, contact a Hydril Repair Facility. Refer to Section 10 for a list of locations.

g. Measure the wellbore diameter (dimension C of Figure 4-26) of the ram BOP. The diameter should not exceed the maximum bore in Table 4-1. If it does, contact a Hydril Repair Facility. Refer to Section 10 for a list of locations.

h. Measure the distance between the body rails and the seal seat pocket (refer to dimension A of Figure 4-26). This measurement should not exceed the maximum rails to seat pocket dimension in Table 4-1. If it does, contact a Hydril Repair Facility. Refer to Section 10 for a list of locations.

i. Measure the distance between the body rails and the seal seat (refer to dimension B of Figure 4-26). This measurement should not exceed the maximum rails to seal seat di-mension in Table 4-1. If it does, contact a Hydril Repair Facility. Refer to Section 10 for

LEGEND:

A – Maximum Rails to Seat Pocket B – Maximum Rails to Seal Seat C – Maximum Bore

D – Side Outlet Erosion E – Side Outlet Erosion

F – Seal Seat Sealing Surfaces

j. Inspect the side walls of the body ram com-partment for wear and damage. Repair mi-nor damage with emery cloth. If major dam-age is present, contact a Hydril Repair Facil-ity. Refer to Section 10 for a list of locations. k. Inspect side outlet bores (areas D and E of Figure 4-26) for erosion . Contact a Hydril Repair Facility if erosion is greater than .250 in (6.4 mm). A B C D E F Rails

Figure 4-26. Ram BOP Body

Bonnet Seal Contact Areas

(39)

shear ram assemblies (item 51 of Figures 4-2 and 4-3). Refer also to Figures 4-4 and 4-5.

a. Inspect pipe and variable ram blocks as follows:

1) Measure the overall height (refer to dimension A of Figure 4-27). If the height is less than the minimum height given in Table 4-1, contact a Hydril Repair Facility. Refer to Section 10 for a list of locations.

2) Measure the depth of the top seal groove (refer to dimensions B of Figure 4-27). If the depth is greater than the maximum depth given in Table 4-1, contact a Hydril Repair Facility. Refer to Section 10 for a list of locations.

3) Inspect the inlaid pipe hanging inserts for cracks. If cracks are present, contact a Hydril Repair Facility. Refer to Section 10 for a list of locations.

4) Perform NDE and hardness tests on Area X of Figure 4-27.

5) Record the results on the inspection form. b. Inspect the shear ram assemblies as follows: 1) Measure the overall height of the upper and lower carrier assemblies (refer to dimen-sion A of Figure 4-28). If it is less than the measurement given in Table 4-1, contact a Hydril Repair Facility. Refer to Section 10 for a list of locations.

2) Measure the depth of the top seal groove in the upper and lower carrier assemblies (refer to dimensions B of Figure 4-28). If it is greater than the measurement given in Table 4-1, contact a Hydril Repair Facility. Refer to Section 10 for a list of locations.

3) Measure the diameter of the guide pins (refer to dimension C of Figure 4-28) on the upper carrier assembly. If the diameter is less than the minimum diameter shown in Table 4-1, replace the guide pins. Part num-bers are iocated in the Ram BOP Operator's Manual.

4) Measure the distance between the bot-tom of the upper carrier to the top of the guide pins (refer to dimension D of Figure 4-28). If the distance is less than the measurement shown in Table 4-1, contact a Hydril Repair Facility. Refer to Section 10 for a list of locations.

5) Measure the distance between the top of the upper carrier to the hard-faced surface

UPPER CARRIER LOWER CARRIER A B C _D E A B F G X X X B A

Figure 4-27. Pipe/Variable Ram Block Inspection

Figure 4-28. Shear Ram Inspection H

(40)

(refer to dimension E of Figure 4-28). If the distance is less than the measurement shown in Table 4-1, contact a Hydril Repair Facility. Refer to Section 10 for a list of locations. 6) Measure the diameter of the guide pin holes (refer to dimension F of Figure 4-28) on the lower carrier assembly. If the diameter is greater than the maximum diameter shown in Table 4-1, contact a Hydril Repair Facility. Refer to Section 10 for a list of locations. 7) Measure the distance between the bot-tom of the lower carrier to the top of the guide pin holes (refer to dimension H of Figure 4-28). If the distance is greater than the mea-surement shown in Table 4-1, contact a Hydril Repair Facility. Refer to Section 10 for a list of locations.

8) Measure the distance between the top of the lower carrier to the hard-faced surface (refer to dimension G of Figure 4-28). If the distance is greater than the measurement shown in Table 4-1, contact a Hydril Repair Facility. Refer to Section 10 for a list of locations.

9) Inspect the hard-faced sealing surface of the lower carrier for cracks, corrosion, ero-sion, and scratches. If cracks are found, contact a Hydril Repair Facility. Refer to Section 10 for a list of locations.

10) Inspect threaded holes for damage. If damage is found, contact a Hydril Repair Facility. Refer to Section 10 for a list of locations.

11) Inspect the shear blades for nicks and cracks. Grind out any nicks that are present and dress the blade. Replace blades with cracks. Refer to the BOP operator's manual for the part number.

12) Perform NDE and hardness tests on Area X of Figure 4-28.

13) Record the results on the inspection form.

C. Wear Limits

The wear limits discussed in this section are listed in Table 4-1.

(41)

Component Description Wear Limit Standard Shear In MM In MM

BOP Body Maximum Bore 7.126 181.00

Maximum Rails to Seat Pocket Pipe Rams 6.246 158.65 Maximum Rails to Seat Pocket Shear Rams

Maximum Rails to Seat Pocket Variable Rams

Maximum Rails to Seat Pipe Rams 5.583 141.81 Maximum Rails to Seat Shear Rams

Maximum Rails to Seat Variable Rams

Bonnet Maximum Bore Piston Rod 2.386 60.60

Maximum Bore Cylinder Liner 6.512 165.40

Maximum Depth Bonnet Seal Groove 0.344 8.74 Seal Seat MinimumThickness of Ram Sealing Flange 0.625 15.88

Piston Minimum Piston O.D. 5.464 138.79

Minimum Rod O.D. 2.368 60.15

Cylinder Maximum Bore, Manual Lock 1.769 44.93

Cylinder Liner Maximum I.D. 5.511 139.98

Minimum Seal O.D. 6.484 164.69

Cylinder Head Maximum Depth of Bearing Pocket 1.538 39.07

Manual Lock Screw Minimum Rod O.D. 1.742 44.25

MPL Lock Nut Minimum Shoulder Thickness 1.247 31.67

MPL Clutch Minimum Teeth Height 0.045 1.14

MPL Transfer Ring Minimum Thickness 1.423 36.14

Bonnet Hinge Maximum Distance Between Hinges 3.530 89.66

Pipe Rams Minimum Height 4.479 113.77

Maximum Depth of Top Seal Groove 0.655 16.64 Variable Rams Minimum Height

Maximum Depth of Top Seal Groove Shear Rams Minimum Height

Maximum Depth of Top Seal Groove Upper Carrier Minimum Diameter of Guide Pins

Minimum Height from Bottom of Rams to Top of Guide Pins

Minimum Height from Top of Rams to Hardface Surface

Lower Carrier Maximum Diameter of Guide Pin Holes Maxmum Height from Bottom of Rams to Top of Guide Pin Holes

Maximum Height from Top of Rams to Hardface Surface

(42)

(43)

BOP Body Maximum Bore 7.126 181.00 7.126 181.00

Maximum Rails to Seat Pocket Pipe Rams 6.246 158.65 6.246 158.65 Maximum Rails to Seat Pocket Shear Rams 6.239 158.47 Maximum Rails to Seat Pocket Variable Rams

Maximum Rails to Seat Pipe Rams 5.583 141.81 5.583 141.81

Maximum Rails to Seat Shear Rams 5.566 141.38

Bonnet Maximum Bore Piston Rod 2.637 66.98 3.640 92.46

Maximum Bore Cylinder Liner 8.512 216.20 14.265 362.33 Maximum Depth Bonnet Seal Groove 0.451 11.46 0.451 11.46 Seal Seat MinimumThickness of Ram Sealing Flange 0.663 16.84 0.663 16.84

Piston Minimum Piston O.D. 7.486 190.14 12.714 322.94

Minimum Rod O.D. 2.618 66.50 3.618 91.90

Cylinder Maximum Bore, Manual Lock 1.769 44.93 3.110 78.99

Cylinder Liner Maximum I.D. 7.511 190.78 12.764 324.21

Minimum Seal O.D. 8.484 215.49 14.237 361.62

Cylinder Head Maximum Depth of Bearing Pocket 1.538 39.07 1.241 31.53

Manual Lock Screw Minimum Rod O.D. 1.742 44.25 2.992 76.00

MPL Lock Nut Minimum Shoulder Thickness 1.247 31.67 1.042 26.50

MPL Clutch Minimum Teeth Height 0.045 1.14 0.047 1.19

MPL Transfer Ring Minimum Thickness 1.433 36.40 1.433 36.40

Bonnet Hinge Maximum Distance Between Hinges 4.020 102.11 4.020 102.11

Pipe Rams Minimum Height 5.479 139.17 5.479 139.17

Maximum Depth of Top Seal Groove 1.160 29.46 1.160 29.46 Variable Rams Minimum Height

Maximum Depth of Top Seal Groove

Shear Rams Minimum Height 5.492 139.50

Maximum Depth of Top Seal Groove 1.150 29.21

Upper Carrier Minimum Diameter of Guide Pins

Minimum Height from Top of Rams to

Hardface Surface 2.762 70.15

Maximum Height from Top of Rams to

(44)

Standard Shear In MM In MM

Minimum Rod O.D. 3.618 66.50 3.618 91.90

Minimum Seal O.D. 10.983 278.97 14.237 361.62

MPL Clutch Minimum Teeth Height .044 1.12

Upper Carrier Minimum Diameter of Guide Pins

(45)

Cylinder Head Maximum Depth of Bearing Pocket

MPL Lock Nut Minimum Shoulder Thickness MPL Clutch Minimum Teeth Height MPL Transfer Ring Minimum Thickness

(46)

Standard Shear In MM In MM

Cylinder Head Maximum Depth of Bearing Pocket

MPL Lock Nut Minimum Shoulder Thickness MPL Clutch Minimum Teeth Height MPL Transfer Ring Minimum Thickness

(47)

Minimum Rod O.D. 3.243 82.37 4.367 110.92

Minimum Seal O.D. 9.484 240.89 11.986 304.44

Upper Carrier Minimum Diameter of Guide Pins 1.248 31.70

Minimum Height from Bottom of Rams to

Top of Guide Pins 2.762 70.15

Lower Carrier Maximum Diameter of Guide Pin Holes 1.260 32.00

Maxmum Height from Bottom of Rams to

Top of Guide Pin Holes 2.766 70.26

MANAUL-9407_B

CONTENTS

PAGE

SECTION

DATE

REVISION

1.0 INTRODUCTION

PAGE

PAGE

3.0 VISUAL INSPECTION

PAGE

PAGE

}