Lined Valve Standard

QUALITY ASSURANCE PLAN FOR LINED BALL,PLUG & BUTTERFLY VALVE

SR.NO ITEMS PARAMETER TYPE OF CHECK QUANTUM OF CHECK REFERENCE DOC.
& ACCEPTANCE NORMS		 DOCUMENT OF RECORD UNP SCOPE TPIA OR CUSTOMER SCOPE
(P) (W) (R) (W) (R)
1 RAW MATERIAL - (A) Non Metalic Parts, (B) Metalic Parts
A) LINING MATERIAL
Intactness Visual 100% P.O. Specification & Product Data sheets Supplier MTC or COC ✖ ✖ ✔ ✖ ✔
Grade confirmation ✖ ✖ ✔ ✖ ✔
Physical verification ✖ ✖ ✔ ✖ ✔
B) VALVE BODY, SIDE-PIECE, BALL(INSERT), PLUG(INSERT) & DISC(INSERT). Chemical & Mechanical Properties per approved GAD / QAP / PO Specification Chemical & Mechanical Property 1 Sample / Size / Heat or as per PO Specification Manufacturer / Supplier TC or NABL Lab. TC EN-10204 -TYPE - 3.1 TC ✖ ✖ ✔ ✖ ✔
2 IN-PROCESS
A) VALVE BODY,SIDEPIECE, PLUG, BALL (INSERT)
Porosity Check Spark Test(NA for Anti.Static Material) 100% UNP Spark Test Procedure Final Insp. Report ✔ ✔ ✔ ✖ ✖
Physical verification Visual
Dimensions Measurement 100% UNP Mfg. Drawings UNP Inward IR ✔ ✔ ✔ ✖ ✖
2 FINISHED PRODUCTS
CS+PFA LINED BALL VALVE. CS+PFA LINED PLUG VALVE. CS+PFA LINED BUTTERFLY VALVE.
Leakage Test (Shell or Body Test) Hydrostatic Test 100% UNP Hydro Test Procedure or Approved GAD Final Insp. Report ✔ ✔ ✔ ✔
(10%)		 ✔
Leakage Test (Seat Test)
1. Hydrostatic Test 100% UNP Hydro Test & Pneumatic Test Procedure or Approved GAD Final Insp. Report ✔ ✔ ✔ ✔
(10%)		 ✔
2.Pneumatic test pressure ✔ ✔ ✔ ✔
(10%)		 ✔
Lining Intactness Spark Test (NA for Anti.Static Material) 100% UNP Spark Test Procedure or Approved GAD or @20 KVDC Final Insp. Report ✔ ✔ ✔ ✔
(10%)		 ✔
Lining thickness Thickness Check 100% 3.2 MM Minimum ✔ ✔ ✔ ✔
(10%)		 ✔
Dimension Measurement Dimension Inspection 100% As per Approved GAD or As per UNP Assly. As Built Drawing Final Insp. Report ✔ ✔ ✔ ✔
(10%)		 ✔
Workmanship Visual 100% ✔ ✔ ✔ ✔
(10%)		 ✔
3 FINAL INSPECTION
3.1 PAINTING
3.1 LINED VALVE DFT Final Shade,Visual DFT Final Shade,Visual 100% UNP Painting Procedure or Customer PO specification/As per Approved Drawing/As per Approved Data Sheet IR ✔ ✔ ✔ ✖ ✖
  • The above said QAP is our internal procedure of Quality Assurance & Control.
  • We provide our Final Inspection Report & MTC or COC to Customers.
  • Based on Inspection Report we allow our customer to Check following :
  • 1. Physical Verification of Valves & Quantity Check
  • 2. Witnessing a leakage Test i.e Hydro Test as per our Standard Test Procedure & pressure rating confirmed per QAP Scope
  • 3. Dimension Check of final assly. of Valve as per our standard or as built drawings.

LEGENDS

P : PERFORM

W : WITNESS

R : REVIEW