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INITIAL PROCESS STUDY




                P/No.   :  49404-A0010-A      P/Name : TRAY, TOOL KIT CAV.1        Supplier : THAI EPP FOAM


                Date     :  20/2/2020         Model   : SPA1 / M001               Incharge : K.Tanongsak

                Standard  Value   :     0        Plus      3             Upr Spec Limit       3.0
                Point Check  :        Point 5   Minus      3             NOMINAL              0.0
                Evaluate By :       T-QA-001                             Lwr Spec Limit       -3.0

                    Two Sided spec. (bilateral)  One Sided (MAX)  One Sided (MIN)
                  Please input data :
                     0.5      0.0       1.1      0.0      0.0      0.2      0.1      0.2      0.3      0.1

                     0.2      0.6       0.5      1.0      0.0      0.0      0.5      0.3      0.4      0.3
                     0.3      0.5       0.3      0.2      0.4      1.0      0.3      0.2      0.1      0.4











                                                              =
                             n   =      30               x        0.333             s =      0.2928
                                                                                      s
                Formulas :

                           Pp  = (USL - LSL ) / 6ss
                           P  = min ( P  , P  )
                            PK
                                             PL
                                        PU
                When   :
                           P  = ( USL -      ) / 3s s        ;  P  = (       -  LSL) / 3s s
                                        x
                                                               x
                            PU
                                                        PL
                Calculate  :
                            P     =    3.04             P     =   3.79
                                                         PL
                             PU
                So ,       P  P                  =          3.41



                                  P PK           =          3.04


                                                                                      Judgement
                  SKETCH
                                                                                     X     Excellent ( >1.67 )
                                                                                           Good ( > 1.33 )
                                                                                           Fail ( <1.33 )






                                                                                      THAI EPP FOAM CO.,LTD.
                                                                                   Approved  Checked  Reported



                                                                                   20/2/2020  20/2/2020 20/2/2020
                EFM-QA-012                                                                     REV.02;28/10/56
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