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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 14 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 :
-2.0 -2.0 -2.0 -2.1 -2.0 -2.0 -2.0 -2.1 -2.0 -2.1
-2.1 -2.0 -2.2 -2.0 -2.1 -2.0 -2.2 -2.1 -2.2 -2.2
-2.1 -2.1 -2.2 -2.1 -2.1 -2.0 -2.0 -2.2 -2.1 -2.1
=
n = 30 x -2.080 s = 0.0761
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 = 22.25 P = 4.03
PL
PU
So , P P = 13.14
P PK = 4.03
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