ANALISIS IMPLEMENTASI WPS & PQR PADA PENGELASAN MATERIAL A333 DAN X65 PT X
DOI:
https://doi.org/10.53026/prosidingsntem.v5i1.817Keywords:
WPS, PQR, GTAW, ASME Section IX, Upstream Process PipingAbstract
Pelaksanaan pengelasan pada pekerjaan perbaikan pipa proses di sektor upstream minyak dan gas memerlukan pengendalian mutu yang ketat untuk menjamin integritas sambungan dan keselamatan operasi. Penelitian ini mengevaluasi implementasi Welding Procedure Specification (WPS) dan Procedure Qualification Record (PQR) pada pengelasan material Carbon Steel ASTM A333 Gr.6 dan API 5L X65 menggunakan proses Gas Tungsten Arc Welding (GTAW) pada posisi 6G. Evaluasi dilakukan berdasarkan ASME Section IX dan ASME B31.3 melalui uji visual, radiografi, serta pengujian mekanik (tensile, bend, dan Charpy impact). Hasil menunjukkan seluruh parameter pengelasan berada dalam rentang WPS, dan semua spesimen memenuhi kriteria penerimaan kode. Uji tarik menghasilkan nilai 524–543 MPa dengan patahan pada base metal, uji lengkung menunjukkan discontinuity 0,7 mm, dan uji impak pada −46 °C memenuhi syarat ketangguhan material. Analisis makro juga menunjukkan fusi sempurna dan HAZ yang sempit. Implementasi WPS dan PQR terbukti efektif dalam meningkatkan kualitas sambungan, meminimalkan potensi cacat, dan memastikan keandalan perpipaan proses di fasilitas upstream migas.
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