CSWIP 3.1 CODES, WPS, WELD REPAIR

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Key notes:

Definitions:

STANDARD: Document established by concensus/ agreement and approved by recognised body (class/third parties )
Ex: Yard standard/ Subcon standard approved by Owner & Class, or JIS/AISI
HARMONISED STANDARD: Document established for interchangability of products, processes, services
Ex: ISO/IACS/IEC
CODE OF PRACTICE, or Set of Manufacture rule Procedure for design/manufacture/installation/utilization.
CAN BE A STANDARD, PART OF STANDARD OR INDEPENDENT OF A STANDARD
Ex: ASTM/ ASME/ ANSI/ DIN/ JIS
REGULATION: Ligislative rules adopted by authority
Ex: IMO/ILO/MARPOL/OCIFM
SPECIFICATION: Meanningful data supporting stating needs & expectation with obligatory
Ex: Contract specification/ project specification
PROCEDURES: Established specified way/process activites following Spec/Code/Standard
Ex: WPS, PWHT, Hydrotest
INSTRUCTION: Established description steps/activites following Spec/Code/Standard/Procedure.
Ex: Vendor instruction
QUALITY PLAN: Which procedure/ Who apply/Which project/When process
Ex: ITP, NDT plan

WPS/WPQR:

pWPS made for qualifying a Weld procedure weld test

WPS accessed by 3 pers (welder/Inspectors/NDT party)

Essential Variables –> affect to Joint Strength/Ductility

Additional variables (EN) –> affect to Toughness and Hardness

Supplementary variables (ASME/AWS) –> affect to Toughness (not refer to Hardness)

Welder Cert expired automatically in case of over 6 months without welding activities.

Tack-welder to be qualified if tack-weld incorporated with final welds

Tack-welder not need to be qualified if tack-weld is temporary attached (Exclude: Heavy lift eyes tack-welds, Thicker (>50mm) section or Special material such as Casting, Forging, Duplex ect., those are seriously affect by Heat).

 

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