QW- 482 WELDING PROCEDURE SPECIFICATION (WPS)(See QW-200.1, Section IX, ASME Boiler and Pressure Vessel Code)

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Company Name Chevron Chemical Co. LLC By: Robert A. GuthrieWelding Procedure Specification No. 180 Date 11/09/99 Supporting PQR No. (s) 180

Revision No. 0 DateWelding Process(es) GTAW Type(s) Manual

(Automatic, Manual, Machine, or Semi-Automatic)JOINTS (QW-402) DetailsJoint Design Single-Vee GrooveBacking(Yes)

(No) X

Backing Material (Type) N/A(Refer to both backing and retainers.)

Metal Nonfusing MetalNonmetallic Other

Sketches, Production Drawings, Weld Symbols or Written Descriptionshould show the general arrangement of the parts to be welded. Whereapplicable, the root spacing and the details of weld groove may bespecified.(At the option of the Manufacturer, sketches may be attached to illustratejoint design, weld layers and bead sequence, e.g. for notch toughnessprocedures, for multiple process procedures, etc.)*BASE METALS (QW-403)P-No. 45 Group No. to P-No. 45 Group No.

ORSpecification type and grade SB-625 Alloy N08904 (904L)to Specification type and grade SB-625 Alloy N08904 (904L)

ORChem. Analysis and Mech Prop.to Chem. Analysis and Mech Prop.Thickness Range:

Base Metal: Groove 1/16 to 0.688 Fillet UnlimitedPipe Dia. Range: Groove All Fillet Unlimited

Other

*FILLER METALS (QW-404) GTAWSpec. No. (SFA) 5.9AWS No. (Class) ER385F-No. 6A-No. 9Size of Filler Metals 3/32, 1/8Weld Metal

Thickness Range:Groove 0.688 max.

Fillet UnlimitedElectrode-Flux (Class) N/AFlux Trade Name N.AConsumable Insert N/AOther

*Each base metal-filler metal combination should be recorded individually.

1/16"1/16"-3/32"

60o-75o

QW-482 (Back)WPS No. 180 Rev. 0

POSITIONS (QW-405) POSTWELD HEAT TREATMENT (QW-407)Position(s) of Groove All Temperature Range N/AWelding Progression: Up X Down Time Range N/APosition(s) of Fillet All

PREHEAT (QW-406) GAS (QW-408)Preheat Temp. Min 50oF Percent CompositionInterpass Temp Max. 350oF Gas(es) (Mixture) Flow RatePreheat Maintenance Shielding Argon 15-25 CFH(Continuous or special heating where applicable should be recorded) Trailing N/A

Backing Argon 5-10 CFH

ELECTRICAL CHARACTERISTICS (QW-409)Current AC or DC DC Polarity Straight (DCEN)Amps (Range) 60-150 Volts (Range) 14-17(Amps and volts range should be recorded for each electrode size, position, andthickness, etc. This information may be listed in a tabular form similar to that shownbelow.)

Tungsten Electrode Size and Type 3/32, 1/8 EW-Th-2Pure (Tungsten, 2% Thoriated, etc.)

Mode of Metal Transfer for GMAW N/A(Spray arc, short circuiting arc, etc.)

Electrode Wire feed speed range N/A

TECHNIQUE (QW-410)String or Weave Bead StringOrifice or Gas Cup Size 3/8 min.Initial and Interpass Cleaning (Brushing, Grinding, etc.). Wire brushing and grinding. Note: Use only stainless steel wire bushes and

aluminum oxide grinding wheels.Method of Back Gouging N/AOscillation N/AContact Tube to Work Distance N/AMultiple or Single Pass (per side) MultipleMultiple or Single Electrodes SingleTravel Speed (Range) 1-7 IPMPeening N/AOther

Filler Metal Current IPM OtherWeld

Layer(s) Process Class Dia.TypePolar.

AmpsRange

VoltRange

Travel SpeedRange

(e.g., Remarks, Comments, Hot WireAddition, Technique, Torch Angle, Etc.)

All GTAW ER385 3/32, 1/8 DCEN 60-150 14-17 1-7

QW-483 PROCEDURE QUALIFICATION RECORD (PQR)(See QW-200.2, Section IX, ASME Boiler and Pressure Vessel Code)

Record Actual Conditions Used to Weld Test Coupon============================================================================================================

Company Name Chevron Chemical Co. LLCProcedure Qualification Record No. 180 Date November 10, 1999WPS No. 180Welding Process (es) GTAWTypes (Manual, Automatic, Semi-Automatic) Manual

JOINTS (QW-402)

Groove Design of Test Coupon(For continuous qualifications, the deposited weld metal thickness shall be recorded for each filter metal or process used.)

BASE METALS (QW-403) POSTWELD HEAT TREATMENT (QW-407)Material Spec. SB-625 Temperature N/AType or Grade Alloy N08904 (904L) Time N/AP-No. 45 to P-No. 45 OtherThickness of Test Coupon 0.344Diameter of Test Coupon 2.375

Other GAS (QW-408) Percent CompositionFILLER METALS (QW-404) Gas(es) (Mixture) Flow RateSFA Specification 5.9 Shielding Argon 15-25 CFHAWS Specification ER385 Trailing N/AFiller Metal F-No. 6 Backing Argon 5-10 CFHWeld Metal Analysis A-No. 9

Size of Filler Metal 1/8 ELECTRICAL CHARACTERISTICS (QW-409)Other Current DC

Polarity Straight (DCEN)Weld Metal Thickness Amps 62-102 Volts 14-17

Tungsten Electrode Size 1/8Other

POSITION (QW-405) TECHNIQUE (QW-410)Position of Groove 6G Travel Speed 2-4 IPMWeld Progression (Up/Downhill) Uphill String or Weave Bead StringOther N/A Oscillation N/A

Multipass or Single Pass (per side) MultipassSingle or Multiple Electrodes Single

PREHEAT (QW-406) Other N/APreheat Temp. 50oF minimumInterpass Temp. 300o F maximumOther

1/16"1/16"-3/32"

60o-75o

QW-483 (Back)

PQR No. 180Tensile Test (QW-150)

Specimen No. Widthin.

ThicknessIn.

AreaIn.2

Ultimate TotalLoad, lb

Ultimate Unit Stresspsi

Type of Failure &Location

T1 0.748 0.322 0.240 23,400 97,500 Ductile, WM

T2 0.750 0.323 0.242 23,500 97,107 Ductile, WM

Guided-Bend Tests (QW-160)Type and Figure Number Result

RB-1, Root Bend per QW-462.3 (a) AcceptableRB-2, Root Bend per QW-462.3 (a) AcceptableFB-1, Face Bend per QW-462.3 (a) AcceptableFB-2, Face Bend per QW-462.3 (a) Acceptable

Toughness Tests (QW-170)Specimen Notch Specimen Test Impact Values Drop Weight

No. Location size Temp. Ft-Lbs % Shear Mils L.E. Break No Break

Fillet-Weld Test (QW-170)

Result - Satisfactory: Yes No Penetration into Parent Metal: Yes NoMacro - Results

Other Tests

Type of Test Radiographic Acceptable (Report #49260Deposit AnalysisOther

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Welders Name Medric Usey, Jr. Clock No. Stamp No. UU2Tests conducted by: Inspection Specialists, Inc. MTL Div. Laboratory Test No. 2336.90We certify that the statements in this record are correct and that the test welds were prepared, welded, and tested in accordance with therequirements of Section IX of the ASME Code.

Manufacturer Chevron Chemical Co. LLCDate November 10, 1999 By Robert A. tre

(Detail of record of tests are illustrative only and may be modified to conform to the type and number of tests required by the Code.)

Qualified Welding Procedures