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                                                                                                   WPS # 1440 - BP
                        WELDING PROCEDURE                                                          REV. # 0
                         SPECIFICATION                                                             DATE: 06-11-2008
      Welding Process (es) : SMAW + FCAW – Gas Shielded                                            Supporting PQR #
      Type (s): Manual + Semi Automatic                                                            1431+1140
               CODES:                    AWS D1.1
      BASE METALS (QW-403)
                                       AWS Group No. 1                                                      AWS Group No. 1 &
               P. No. 1                                              TO               P. No. 1
                                            &2                                                                     2
                                                                OR
      Specification Type & Grade                        : ABS Grade A/AH36/DH36/EH36/AH40/API 5L X52 or
      similar/lower grades
                                                   TO
      Specification Type & Grade           : ABS Grade A/AH36/DH36/EH36/AH40/API 5L X52 or
      similar/lower grades
      Thickness ranges qualified for        :
      Base Metal:                  Groove: ≥ 5.0 mm                      Fillet: All
      Deposited filler Metal:      Groove: Unlimited                     Fillet: All
      Diameter Range Qualified: ≥ 100mm OD for Circum Seam Welds
      JOINTS (QW – 402)
                                                                                                                     Backing :
                                                                                                                     Retainers :
      The other applicable weld details shall be per clause 3.12 & 3.13 of
      AWSD1.1
      FILLER METALS (QW – 404)
                                                  SMAW                     FCAW – Gas Shielded
      Process(es)
                                                                               Hot pass &
                                                 Root Pass only                                         Fill, Cap & Backweld
                                                                               Backweld
      Spec. No. (SFA)                                   5.1                        5.1                            5.20
      AWS No. (Class)                                E7016-1                    E7018-1                         E71T-1J
      F. NO.                                             4                          4                               6
      A- NO.                                             1                          1                               1
      Size of Filler Metals                        2.5/3.2 mm.               2.5/3.2/4.0mm                      1.2 mm.
      Flux-Wire Class                                   NA                         NA                              --
      Flux Type                                         NA                         NA                              --
      Supplemental Filler Metal                       None                        None                           None
      Flux Trade Name                                   NA                         NA                              --
                                                                                                               KISWEL
      Electrode/Filler Wire Trade
                                                          ---                         ---                  K-71UT/ESAB OK
      Name
                                                                                                           TUBROD 15.13C
      Recrushed Slag                                      NA                          NA                         None
                                                                                                           Flux Cored Wire
      Filler Wire Product Form                            NA                          NA
                                                                                                               (tubular)
      Consumable Insert                                 None                        None                         None
      Closed Out Chamber (P51                            NA                          NA                            NA
thr. P53)
Electrode Spacing                              NA                  NA                                NA
Prepared by:                                                Approved by:
HMI Welding Engineer
                                                                                                  WPS # 1440-BP
                                                                                                      Rev.0
                                                         POSTWELD HEAT TREATMENT (QW-407) :
POSITIONS (QW-405)
                                                         NONE
Position (s) of Groove : All                             Temperature Range :      ---
Welding Progression : Vertical Uphill                    Time Range :                                ---
                                                         Heating Rate/Hr.                   ---
Position (s) of Filler : All
                                                         Cooling Rate/Hr.                   ---
PREHEAT (QW-406)                                         GAS (QW – 408) :
             ≤ 19.0mm. Thk: 24˚C (75˚ F)
Preheat      > 19.0≤ 38.1mm Thk: 66˚C                                      Gas(es)      Mixture            Flow Rate
Temp.        (150˚ F)
(Min) :      >38.1 ≤ 63.5mm. Thk: 107˚C                                                                     25 – 40
                                                         Shielding           CO2            100%
             (225˚ F)                                                                                         cfh
Interpass Temp. (Max): 250˚ C (482˚ F)
Interpass Temp. shall not be less than the                Trailing           NA               NA              NA
Preheat temp
Preheat Maintenance : ---                                 Purging            NA               NA              NA
(Continuous or Special Heating where applicable should
be recorded)                                             Purging Duration : NA
TECHNIQUE (QW – 410)
Stringer or Weave bead: Stringer/Weave                   Oscillation: NA
Max. Weave Width : 3 x Electrode Dia.for                 Contact tube to work distance : 10-15mm for
SMAW                                                     FCAW-GS
Orifice/Gas cup size : 12.7mm                            Multiple/Single pass (per side) : Multipass
Initial Cleaning : Grinding and/or Wire
                                            Multiple/Single Electrode(s) : Single
Brushing
Interpass Cleaning : Grinding and/or Wire   Travel Speed (Range) cm/min : Please see table
Brushing                                    below
Method of back gouging : Air arc gouging
                                            Peening : NA
and/or Grinding (when reqd)
Maximum weld deposit thickness per pass : < Max Time between R&H passes : Refer note -2
12.7 mm                                     below
ELECTRICAL CHARACTERISTICS (QW – 409)
Current (AC / DC) : DC                                   Polarity : Please see table below
Amps (Range) : Please see table below                    Volts (Range) : Please see table below
Tungsten Electrode Size & Type : NA                      Mode of Metal Transfer : Short Circuiting
Pulsing Current : Not used                               (Spray arc, short circuiting arc, etc for
                                                         GAW/FCAW)
Electrode/Wire Feed Speed Range :
                                    Filler Metal              Current                              Travel
    Weld                                                                           Volts           Speed          Othe
                  Process                                Type &        Amp
   Passes                        Class       Dia mm                               (Range)         (Range)          r
                                                         Polarity    (Range)                      cm/min
                                E7016                                 65 –
    Root          SMAW                       2.5/3.2     DC EN                    20 – 26         2.0 – 3.0        ---
                                 -1                                   110
    Hot           SMAW          E7018        2.5/3.2     DC EP        65 –        20 – 26         3.0 – 5.0        ---
                         -1                            110
              FCAW-     E71T-                         150 -
Fill & Cap                          1.2      DC EP             24 - 26   7.0 – 10.0   ---
               G.S        1J                           225
              FCAW-     E71T-                         150 -
Backweld                            1.2      DC EP             24 - 26   7.0 – 10.0   ---
               G.S        1J                           225
 (when
                Or      E7018     2.5/3.2/             65 -
 reqd)                                       DC EP            20 – 26    3.0 – 7.0
              SMAW       -1         4.0                160
              FCAW-     E71T-                         150 -
                                    1.2      DC EP             24 - 26   7.0 – 10.0   ---
               G.S        1J                           225
  Fillets
                Or      E7018     2.5/3.2/             65 -
                                             DC EP            20 – 26    3.0 – 7.0
              SMAW       -1         4.0                160
NOTES:
1. Back gouging and/or grinding shall be done to sound metal prior to backwelding.
2. Hot pass shall be applied immediately after root-pass weld cleaned