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CP_111 Smallbore Fittings.pdf

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  • CONTENTS

    SECTION TITLE PAGE 1 SCOPE 2 2 EXCLUSION 2 3 DEFINITIONS 3 3.1 Sour Service 2 3.2 Hazardous service 3 3.3 Corrosive Service 3 3.4 Connection 3 4 SERVICE CATEGORY 4 4.1 Service Category 'A' 4 4.2 Service Category 'B' 4 5 DESIGN AND INSTALLATION 4 5.1 Branch Connections 4 5.2 Design Tolerances 7 5.3. Jointing Methods 8 6 MATERIALS 14 7 INSPECTION AND TESTING 15 7.1 Radiography Quality 15 7.2 Random radiograph 15 7.3 Joint Failure Inspection 15 7.4 Butt Welded Joint Inspection 15 7.5 Screwed Joint Inspection Prior to and Post Seal Welding 16 APPENDICES Appendix I Service Category Selection for Typical ADMA-OPCO 17 Service Conditions. Appendix II Branch Connection Schedule 21 Appendix III Recommended Practices to Modify Small Bore Screwed 22 Connections of Existing Equipment Appendix IV List of reference Standards 24

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  • 1. SCOPE 1.1 This Code of Practice specifies ADMA-OPCO general requirements / recommended practices for the design, installation, inspection and testing of small bore (2" NPS and below) branch connections in carbon steel piping.

    Specification of these requirements is dependent upon the Service Category associated with the fluid and process conditions. A list of fluids and conditions commonly encountered in ADMA-OPCO installations and the Service Category to be applied in each case is given in Appendix I.

    1.2 Problem cases which may arise from small bore connections on the existing

    pressure vessels, heat exchangers, separators etc., should be treated as recommended by this Code. However, special attention should be given to the screwed connections which require repair as illustrated in Appendix III of this Code.

    1.3 This Code of Practice does not directly apply to the items listed below,

    however its recommendation/constraints should be considered when specifying, ordering or installing new equipment package unit/piping system:

    a. Small bore connections on equipment installed in a piping system e.g. pump casings, valve bodies, orifice box connections etc. b. Small bore piping, factory installed as part of an equipment package unit e.g. lube oil coolers piping, air coolers etc. 2. EXCLUSION 2.1 This Code of Practice does not apply to the following:- a. Stainless steel, galvanized steel, non-ferrous and non-metallic piping systems.

    b. Small bore "non flowing" branches downstream of the first isolation valve e.g. instrument/sample connections, vents and atmospheric drains.

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  • 3. DEFINITIONS

    Definitions shall be as given in ANSI/ASME B31.3 except for the following: 3.1 Sour Service

    Includes sour hydrocarbon process fluids as defined in the NACE Standard MR01 75 (paras 1.3.1, 1.3.2 and figs 1 and 2).

    3.2 Hazardous Service

    As defined in API RP14E, subsection 2.7 and extended by (e) & (f) as follows:

    a. Hydrocarbon service above 2000 psig i.e. all pipework class 900 and above. b. Hydrocarbon service above 200 oF. c. Hydrocarbon service piping subject to cyclic vibration. d. Glycol service. e. Lethal, Toxic and dangerous chemicals. f. Steam in all conditions of saturation and superheat. 3.3 Corrosive Service

    Includes any fluid and process condition which may lead to appreciable metal loss corrosion of carbon steel. Assessment of corrosive service is to be made by Quality Assurance Department.

    3.4 Connection Is defined as a branch or joint connection. It normally consists of: a. Joint fitting (weldolet, sockelet, tee etc.) b. Spool, pipe (pup piece) etc. c. Flange or coupling. d. Isolation Valve (flanged type). N.B.

    i. The isolation valve should be fitted as close as possible to the joint fitting.

    ii. In case that the isolation valve cannot be fitted close to the joint fitting, particular attention shall be given to eliminate dead leg piping configuration.

    iii. In extreme cases where the implementation of the requirement in (ii) above is found impossible, Engineering Division shall be consulted.

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  • 4. SERVICE CATEGORY

    The requirements for design, installation, inspection and testing of all small bore carbon steel piping systems are dependent on the Service Category of the system. The service category shall be defined as follows:

    4.1 Service Category 'A'

    This is the most stringent category and is mandatory for all hazardous, sour or corrosive services. Other duties may be specified in this category if additional integrity is required.

    4.2 Service Category 'B'

    This category covers all remaining duties not included in category 'A' which are non-hazardous, not sour and non-corrosive. The requirements for this category are the minimum to be applied to any carbon steel piping system.

    N.B:

    Typical ADMA-OPCO Pipeline Service conditions are tabulated in Appendix I of this Code of Practice.

    5. DESIGN AND INSTALLATION

    Small bore piping and piping connections shall generally be designed in accordance with API RP14E (for Offshore Installation) and ANSI/ASME B31.3 (for Onshore - Das Island Installation) except as modified by this Code of Practice.

    5.1 Branch Connections 5.1.1 The selection of small bore branch connection design type shall be in accordance with Table 1A for Service Category A, and Table 1B for Service Category B (Appendix II of this Code).

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  • 5.1.2 The minimum branch size shall be as follows:

    TABLE 5.1.2

    MINIMUM BRANCH SIZE (NPS )

    LOCATIO N CATEGORY A CATEGORY B

    Das Island

    a. Piping Installation

    2 (DN 50) 1 (DN 25)

    b. Vessels Installation

    b.1 Existing Vessels * 1 (DN 25) 1 (DN 25) b.2 New Vessels 2 (DN 50) 2 (DN 50)

    Offshore

    a. Piping Installation

    2 (DN 50) 1 (DN 25)

    b. Vessels Installation

    b.1 Existing Vessels * 1 (DN 25) 1 (DN 50) b.2 New Vessels 2 (DN 50) 2 (DN 50)

    N.B.

    Where practical each vessel connection shall be provided with a flanged valve close to the connection at full branch size. Downstream of this valve the pipe size and wall thickness may be reduced. (See also NB of Table 5.1.3.) * Whenever an existing vessel is taken out of production for overhaul or repair, the opportunity should be taken, if deemed necessary to modify the nozzles as indicated in the above Table. However, nozzles which require replacement and internal coating should be referred to Engineering Division for possible upgrading of these nozzles to 2 (DN 50) NPS to facilitate internal coating of the same.

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  • 5.1.3 The minimum wall thickness (pipe schedule) for small bore branch

    connections shall be as follows:

    TABLE 5.1.3

    MINIMUM WALL

    THICKNESS/PIPE SCHEDULE

    LOCATION CLASS CATEGORY A CATEGORY B

    Das Island

    a. Piping Installation

    - All Classes - Class 600 and below - Class 900 and above

    Sch. 160

    --

    --

    --

    Sch. 80

    Sch. 160

    b. Vessels Installation b.1 Existing Vessels * - All Classes Sch. 160 Sch. 160 b.2 New Vessels - All Classes Sch. 160 Sch. 160

    Offshore

    a. Piping Installation

    - All Classes - Class 600 and below - Class 900 and above

    Sch. 160

    --

    --

    --

    Sch. 80

    Sch. 160

    b. Vessels Installation b.1 Existing Vessels * - All Classes Sch. 160 Sch. 160 b.2 New Vessels - All Classes Sch. 160 Sch. 160

    N.B:

    The wall thickness of small bore carbon steel pipe downstream of the first branch isolation valve may be reduced subject to the system design conditions/calculation in accordance with ANSI/ASME B31.3. * See N.B. of Table 5.1.2

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  • 5.2 Design Tolerances

    5.2.1 Manufacturers Tolerance The minimum manufacturers allowance to be used in design shall be 12.1/2% applied of the nominal pipe wall thickness. 5.2.2 Threading Allowance

    The minimum threading allowance to be used in wall thickness calculations of threaded piping, where such connections are permitted shall be as follows:

    Minimum Pipe Size (NPS) Minimum Threading Allowance

    Inch mm Inch mm

    1 25 0.07 1.78

    1.1/2 40 0.07 1.78

    2 50 0.07 1.78

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  • 5.3 Jointing Methods

    The jointing methods for small bore carbon steel piping shall be given priority/preference as tabulated below:-

    No. Jointing Method Category A Category B Remarks

    1. Butt Welding Mandatory Preferred -

    2. Socket Welding Not Acceptable First Alternative Shall be installed under closely controlled supervision, Inspection and Testing.

    3. Screwed Not Acceptable Last Alternative - Ditto -

    5.3.1 Flanges

    a. Flanges shall be ANSI, carbon steel, welding neck to ADMA-OPCO STD-108, flange weld face shall be

    compatible with that specified for the run of welded pipe.

    b. Slip-on flanges shall not be used on Service Category A, or on Service Category B at Class 600 and above.

    c. Slip-on flanges shall not be fitted directly to pipe fittings d. API flanges are not recommended for process plant and if

    associated with a piping system e.g. wellheads, no welding on them will be accepted, unless carbon content is restricted in accordance with Section 6.

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  • e. Flanges, 2 NPS (DN 50) and smaller shall normally be

    supplied as follows:

    PIPE DESIGN CLASS

    FLANGE RATING CLASS

    FLANGE FACING

    150 150 RF 300 300 RF 600 600 RF 900 1500 RJ

    N.B.

    The loading of flange bolting is critical and make-up should be done under close supervision using specially regulated torquing tools.

    5.3.2 Butt Welding Joints

    a. Generally, the only acceptable welding technique for small bore piping is Gas Tungston Arc Welding (GTAW). However the Shielded Metal Arc Welding (SMAW) technique may be considered for NPS 2 inch (DN 50) butt welds on Service Category A & P piping, provided that the electrode size is a maximum of 2.5mm and the pipe wall thickness is not less than 3/16 inch (4.75mm ). This electrode diameter restriction does not apply to Service Category B piping.

    b. Welding Procedure Specifications (WPS) and WPS

    Qualifications shall be in accordance with ADMA-OPCO STD 101 and this Code of Practice, and require ADMA-OPCO approval. WPS qualification shall normally be required for Service Category A & B piping.

    c. The maximum mis-alignment of bores shall be 0.8mm

    and a backing ring or fusible insert shall not be used. Weld preparations shall be as given in Figures 5.3.2 (a) and (b).

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  • 5.3.3 Socket Welding Joints

    a. Forged socket welding fittings may be installed subject to the

    constraints of design (Subsection 5.3) , materials (Section 6) and installation stated herein, i.e. for category B only.

    b. Preparation and assembly of the joint for welding shall be

    supervised and inspected (Section 7) to ensure that pipe ends are axially square to the base of the fitting to the dimensions and gaps shown below in Figure 5.3.3. To ensure a 1.6mm root gap the pipe end shall first be fully inserted, the outside surface of the pipe shall then be marked in line with the end face of the socket. The pipe shall then be withdrawn approximately 1.6mm before welding.

    c. Welding Procedure Specifications, (WPS0 Qualifications

    shall be in accordance with ADMA-OPCO STD 101 and this Code of Practice and require ADMA-OPCO approval. WPS qualifications are required for Service Category B piping unless otherwise advised by QAD.

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  • 5.3.4 Screwed Joints

    a. Screwed joints shall not be used in Service Category A and

    should be minimised on Service Category B, especially if vibration can occur with resultant cyclic stress can be applied to the joint.

    b. If screwed joints cannot be avoided in service category B they

    shall be seal welded in accordance with this Section and shall be subject to special inspection per Subsection 7.5 of this code.

    c. Taper pipe thread to ANSI/ASME B1.20.1 shall be used for internal and external screwed pipe and fittings. d. Materials shall be as stated in Section 6 with thicknesses in

    accordance with 5.1.3. Screwed joints for seal welding shall be cleaned with solvent, be rust free and made-up without lubricant or sealant.

    NB

    i. "Handling Tight" is in excess of "hand tight and is defined as sufficiently tight so that a coupling cannot be removed except by use of a wrench.

    ii. "Hand Tight" is defined as made up without the use of tools. The hand tight stand off for the NPS range

    covered herein is nominally three thread turns and is given dimensionally on Table/Diagram 2 of this Code.

    e. If seal welding cannot be applied to screwed joints in service

    category B, they should be made up with thread compounds conforming to API Bull 5A2. Teflon and other tapes shall not be used in screwed joints.

    f. Seal welding shall be carried out as follows:-

    f.1 Seal welding shall be carried out by qualified,

    pipecoded welders. f.2 All exposed thread shall be covered by seal weld. f.3 Seal welds may be used only to prevent leakage of threaded joints. They shall not be considered as contributing any strength to the joint.

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  • 6. MATERIALS

    The materials listed herein are limited to low strength carbon steels for pipe and fittings since these are readily available and their excellent welding qualities will result in the best possible installation. The basic material philosophy is API 5L grade B pipe with forged fittings of compatible yield strength. Within the scope of this philosophy are the following material specifications:-

    SR. No.

    ITEM MATERIAL SPECIFICATIONS

    REMARKS

    1. Pipe API 5L Gr B ASTM A 106 Gr B

    2. Fittings ASTM A 105 1. All fitting are to be forging ASTM A 181 Gr B

    ASTM A 234 Gr WPB 2. Dimensional Standard shall be

    ANSI/ASME B 16.9 for butt-welding and socket welding and ANSI B16.11 screwed fittings

    3. Flanges shall be to the requirement of ADMA-OPCO Standard STD 108.

    4. Substitution of the above pipe and fitting materials for carbon steel piping systems shall be subject to ED/QAD approval.

    3. Stud bolts ASTM A 193 Gr B7 1. Fit to be Class 2 or equal from BS 4882 4. Nuts ASTM A 194 Gr 2H 2. Stud bolts and nuts, 1/2 - 13 UNC and

    larger, are to be Zinc Plated and shall be within the thread tolerance for Class 2A fit after coating as noted in BS 919 Part. I

    3. The manufacturer may also submit an alternative coating specification for approval by QAD.

    N.B. An acceptable coating procedure is

    phosphate treated in conjunction with PTFE coating.

    Mandatory Requirement No. 1

    Materials in contact with sour fluids shall be supplied in the finished condition stated in the NACE Standard MR01 75 and ADMA-OPCO SP-1000 eg. carbon and low alloy steels shall have a maximum hardness of HBN 237 (HRC 22) Mandatory Requirement No. 2 The steel of pipe and fittings for welding (including seal welding of screwed fittings) applications shall be supplied with a carbon content not exceeding 0.25% even if this is a curtailment of any of the above specification.

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  • 7. INSPECTION & TESTING

    The basic requirements of Inspection and Testing shall be that nominated in ANSI/ASME B 31.3 and API RP 14E as modified and extended herein. The acceptance of small bore pipe to this Code of Practice shall be a successful hydrostatic test at a pressure of 1.5 times the maximum allowable working pressure of the system and a minimum of 7 bar. In addition, screwed joints (seal welded) and socket-welded joints shall be radiographed as per Subsection 7.2 to establish that joint make-up is acceptable.

    N.B:

    Radiography is not intended as an inspection of welding quality for acceptance purposes.

    7.1 Radiographic Quality Radiography shall be to BS 2910 and shall be of sufficient quality to give adequate details of the joint make-up. 7.2 Random Radiography

    One in ten, screwed or socket welded joints, selected at random by ADMA-OPCO's Inspection Engineering Representative shall be radiographed.

    7.3 Joint Failure Inspection

    7.3.1 If random radiography reveals unacceptable set up or defects, two further joints in the group shall be radiographed and any further discovery of unacceptable joint shall require the radiography of all joints within the group.

    7.3.2 Defective joints shall be made up again, welded and reradiographed. 7.4 Butt Welded Joint Inspection

    7.4.1 Visual inspection of butt welded joints together with the hydrostatic test indicated above will be sufficient normally for the acceptance of butt welded small bore piping systems. However, ADMA-OPCO reserve the right and at the discretion of the Inspection Engineer to nominate joints for random radiography as per subsection 7.2. If any joint is then found to be defective the provisions of subsection 7.3 shall apply.

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  • 7.4.2 If radiography is applied to butt welded joints, particular attention should be paid to root bead penetration which should not exceed the figures given below in Table 7.4, although an occasional local slight excess of penetration (not more than 0.5mm) is allowance at the discretion of ADMA-OPCOs Inspection Engineer.

    TABLE 7.4 PENETRATION OF ROOT BEAD

    NOMINAL PIPE SIZE MAX PENETRATION IN THE BORE

    mm

    NPS 1 ( DN 25)

    1.5

    1.1/2 (DN 40) upto and including 2 (DN 50) 2.5

    7.5 Screwed Joint Inspection Prior to and Post Seal Welding All screwed joints are to be inspected prior to and post seal welding as

    follows:

    7.5.1 Joints are to be cleaned and degreased. 7.5.2 Ensure by visual inspection that effective thread length is fully

    engaged and only run out or varnish threads are visible. 7.5.3 Wire brush and thoroughly clean the protruding threads and adjacent

    fitting end. 7.5.4 Seal weld as per sub-section 5.3.4 of this Code 7.5.5 On completion of welding, the seal weld shall be proved free of

    defects using full MPI or liquid penetrant dye test.

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  • APPENDIX I

    Service Category Selection for Typical ADMA-OPCO Pipeline Service Conditions

    Pipeline Service Service Conditions * Service Category Designation Description Pressure

    psig (bar) Temperature

    F ( C) (A or B)

    AC Acidiser All All B (See Note 1) AGC Acid Gases All All A ATK Aviation Turbine Kero All All (See Note 2 ) BKF Bunker Fuel All All B (See Note 3) CIN Chemical Injection All All A (See Note 4) CL Chlorine All All B (See Note 5) CO Crude Oil a) Sour All All A b) Wet & Corrosive All All A c) Non-sour >2000 (138) >210 (99) A d) Non-sour

  • Appendix I (Continued)

    Pipeline Service Service Conditions * Service Category Designation Description Pressure

    psig (bar) Temperature

    F ( C) (A or B)

    FO Fuel oil 65 (4.5) All A b) Non-sour > 65 (4.5) 210 (99) A (See Note 3) PW Produced water All All B (See Note 3) RO Recovered Oil All All B (See Note 3) RV Relief Gas a) Sour >65 (4.5) All A b) Non-sour All All B (See Note 3) S Steam a) Superheated or Saturated All All A b) Other All All B (See Note 3) SC Steam Condensate >65 (4.5) >210 (99) A (See Note 3) SEW Sewage All All A (See Note 6) SFG Sweet fuel gas designation FG(b) SUL Sulphuric acid 94% All All A (See Note 5) SW Sea water All All A (See Note 6) TW Treated water All All B (See Note 3) V Flare gas > 65 (4.5) All A > 65 (4.5) All B (See Note 3) * As per ADMA-OPCO current application/operating conditions.

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  • Appendix I Notes

    1. 'AC' Acidising/Kill Lines are not in continuous service and as such can be treated as Service Category B unless the added integrity of service Category A is requested by the user department.

    2. 'ATK' pipework should normally be in stainless steel, or specially lined carbon steel.

    In either case this Code of Practice does not apply and guidance should be sought from Engineering Division.

    3. The maximum specification of this Code of Practice would not normally be required

    unless the user department considers it is necessary for safety or maintenance reasons in the cases listed below. Individual cases as such should be referred to Engineering Division/QAD for Clarification.

    3.1 Non-sour & non-corrosive crude oil and other hydrocarbon pipelines for

    working temperatures and pressures below 99 oC (210 oF) and 138 bar (2000 psi).

    3.2 Drain lines from hydrocarbon processing plant and equipment after the first

    block valve. 3.3 Water and steam condensate lines in which corrosion is not considered to be

    a problem. 3.4 Air and non-hydrocarbon gas lines when toxicity and corrosion are not a

    problem such as "GN" - nitrogen.

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  • 4. CIN chemical injection lines would normally be in plastic or stainless steel (or

    other suitable alloys) by virtue of their corrosive nature or for cleanliness. If carbon steel is proposed for such service, guidelines from the Quality Assurance Department should be sought. If use of carbon steel is acceptable, then Service Category A is required. Chemicals in this category include:

    Designation Service Description

    ANF Antifoaming Agent

    BCD Biocide CRI Corrosion Inhibitor DMF Demulsifier FAD Filter Aid GLC Glycol * KL Kontol MNL Methanol OSC Oxygen Scavenger PHC Cycloexalamine (pH

    control)

    Polyelectrolyte SHC Sodium hyperchlorite SCI Scale Inhibitor TSP Trisodium Phosphate * Hot Glycol associated with reboilers is a special problem.

    5. Special postweld heat treatment may be required for carbon steel piping in, caustic

    soda (50%) and above, chlorine, concentrated sulphuric acid, DEA & Carbonate Services. Such cases should be referred to Quality Assurance Department for evaluation.

    6. Carbon steel pipe fittings are not normally used for sea water, potable water or

    sewage, but if selected shall be treated as Service Category A.

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  • APPENDIX II

    BRANCH CONNECTION SCHEDULE

    NOMINAL RUN OR PIPE (NPS)

    BRANCH SIZE 2 3 4 6+ (NPS) (DN50) (DN 80) (DN 100) (DN 150)

    2 (DN 50)

    ET 1

    UT 1

    UT 1

    WOL

    TABLE 1A

    Branch Connection Schedule for Service Category A

    NOMINAL RUN OR PIPE (NPS)

    BRANCH SIZE 1 1 2 3 4 6+ (NPS) (DN25) (DN 40) (DN50) (DN80) (DN 100) (DN 150)

    1 (DN 25) ET 2 UT 2 UTI/SOL WOL/SOL WOL/SOL WOL/6 SC

    1 1/2 (DN 40) ET 2 UTI/SOL UTI/SOL WOL/SOL WOL/6 SC

    2 (DN 50) ET 1 UT 1 UT1/WOL WOL

    TABLE 1B

    Branch Connection Schedule for Service Category B

    Tables 1A & 1B Legend LEGEND DESCRIPTION

    ET1 Equal Tee - Butt weld

    ET2 Equal Tee - Socket welding or screwed (where allowed)

    UT1 Unequal Tee - Butt weld

    UT2 Unequal Tee (Equal Tee + Insert)

    - Socket welding or screwed (where allowed)

    WOL Weldolet - 6000 lb in Table 1A/3000 lb Table 1B

    SOL Sockolet or Thredolet (where allowed - 3000 lb

    6 SC Socket weld or screwed coupling (where allowed) - 6000 lb

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  • Appendix III

    Recommended Practices to Modify Small Bore Screwed Connections of Existing Vessels 1. Preamble

    Small bore screwed fittings on vessel package unit are susceptible to corrosion which normally causes loss of metal in both the vessel shell and fittings. Unlike piping systems the repair of these vessel's normally entail post weld heat treatment and pressure testing of the whole unit which is difficult to implement in most cases. To overcome such difficulties, this appendix could be used as a guide to prepare the necessary scope of work for future modification works.

    2. Scope

    This appendix recommends methods to resolve/modify whenever deemed necessary the problems arising from small bore screwed fittings/connections on existing pressure vessels, tanks, heat exchangers, coolers and other equipment package units.

    3. Application 3.1 This appendix covers the following screwed connection cases:- 3.1.1 Plugged connection (Case No.1) 3.1.2 Process connection (Case No.2) 3.1.3 Instrument connection (Case No.3)

    3.2 The course of action recommended for each of the above cases is illustrated in the attached diagram.

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  • APPENDIX IV

    List of Reference Standards The latest edition or revision of the following Codes and Standards shall to the extent specified herein, represent a part of this Code of Practice:- ADMA-OPCO ADMA-OPCO STD 101 - APPROVAL OF WELDING PROCEDURE SPECIFICATIONS ADMA-OPCO STD 108 - FLANGES 600 mm (24 inch) NPS AND SMALLER ADMA-OPCO SP-1000 - MATERIALS FOR SOUR SERVICE BSI BS 919 PART 1 - GAUGES FOR SCREW THREADS OF UNIFIED FORM BS 1706 - ELECTROPLATED COATINGS OF CADMIUM AND ZINC ON IRON AND STEEL BS 2910 - METHODS FOR RADIOGRAPHIC EXAMINATION OF FUSION WELDED CIRCUMFERENTIAL BUTT - JOINTS IN STEEL PIPE. BS 4882 - BOLTING FOR FLANGES AND PRESSURE CONTAINING PURPOSES API API BULL 5A2 - BULLETIN ON THREAD COMPOUND API SPEC 5B - SPECIFICATION FOR THREADING GAUGING AND THREAD INSPECTION API SPEC 5L - SPECIFICATION FOR LINE PIPE API RP 14E - DESIGN AND INSTALLATION OF OFFSHORE PRODUCTION PLATFORM PIPING SYSTEMS ANSI/ASME ANSI/ASME B16.9 - FACTORY MADE WROUGHT STEEL BUTT WELDING FITTINGS ANSI/ASME B16.11 - FORGED STEEL FITTINGS SOCKET-WELDING AND THREADED ANSI/ASME B31.3 - CHEMICAL PLANT & PETROLEUM REFINERY PIPING ANSI/ASME Bl.20.1 - PIPE THREADS, GENERAL PURPOSE ASTM ASTM A 105 - FORGED CARBON STEEL FOR PIPE COMPONENTS ASTM A 181 - FORGINGS, CARBON STEEL FOR GENERAL PURPOSE PIPING ASTM A 193 - ALLOY STEEL AND STAINLESS STEEL BOLTING ASTM A 194 - CARBON AND ALLOY STEEL NUTS FOR ASTM A-193 BOLTS ASTM A 234 - PIPE FITTINGS OF WROUGHT CARBON AND ALLOY STEEL NACE NACE MR0175 - SULPHIDE STRESS CRACKING RESISTANT METALLIC MATERIALS FOR OIL FIELD EQUIPMENT

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    CP_111 Rev1.PDFFront SheetContents1-Scope2-Exclusion3-Definitions4-Service Category5-Design and Installation6-Materials7-Inspection & TestingAppendix IAppendix IIAppendix IIIAppendix IV


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