Experimental Study on Post-Fire Mechanical Response of SA516 Grade 70 Pressure Vessel Support Material after Applying Passive Fire Material

Tsurayya, Ghaida Haifa (2023) Experimental Study on Post-Fire Mechanical Response of SA516 Grade 70 Pressure Vessel Support Material after Applying Passive Fire Material. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Passive Fire Protection (PFP) adalah jenis proteksi kebakaran yang dapat memberikan alternatif yang efektif untuk sistem aktif untuk melindungi dari kegagalan pressure vessel. Pada penelitian ini, evaluasi material PFP dengan lapisan intumescent dilakukan untuk mencegah keruntuhan support pressure vessel jika terjadi kebakaran. Spesimen baja SA516 Gr. 70 yang terpapar pada periode pemanasan yang lebih lama dilakukan pengujian tarik, kekerasan, dan metalografi. Integritas struktural, sifat mekanis, dan rekomendasi teknis yang sesuai untuk spesimen paska kebakaran yang dilapisi dengan Dry Film Thickness (DFT) mengikuti dan di bawah perhitungan standar minimum BS-476 dan tidak dilapisi diperiksa untuk semua waktu pemanasan, yaitu selama 20, 30, 40, 50, 60, dan 70 menit. Hasil uji metalografi menunjukkan bahwa kebakaran pada baja SA516 Gr. 70 tanpa PFP secara signifikan mengubah struktur mikro material dan SA516 Gr. 70+PFP memiliki perubahan struktur mikro yang relatif sedikit. Spesimen dengan nilai uji tarik dan kekerasan terbaik yang disebabkan oleh perubahan struktur mikro ini adalah baja SA516 Gr. 70 yang diaplikasikan PFP dengan DFT sesuai dengan perhitungan standar minimum BS-476. Hasil uji tarik menunjukkan bahwa nilai uji paska kebakaran yang berlangsung selama 50 hingga 60 menit masih memenuhi persyaratan tarik SA516 Gr. 70 ASME Section II-A. Selain itu, hasil uji kekerasan menunjukkan penurunan nilai kekerasan pasca kebakaran selama 70 menit hanya sebesar 6,34%. Berdasarkan hasil pengujian, support pressure vessel SA516 Gr. 70 yang mengaplikasikan material PFP memiliki integritas struktur dan sifat mekanik pasca kebakaran yang lebih baik dibandingkan dengan yang tidak mengaplikasikan material PFP. Selain itu, material pasca kebakaran SA516 Gr. 70+PFP dengan DFT yang sesuai masih dapat digunakan. Namun, analisis mikroskop dari logam dasar dan pengganti PFP baru harus dilakukan untuk memastikan perlindungan integritas struktural terbaik. Melalui penelitian ini juga dapat disimpulkan bahwa penerapan material PFP secara signifikan berdampak pada integritas struktural dan sifat mekanik support pressure vessel SA516 Gr. 70 ketika terpapar temperatur tinggi akibat kebakaran.
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Passive Fire Protection (PFP) is a type of fire protection that can provide an effective alternative to active systems to protect against pressure vessel failures. In this study, PFP material evaluation with intumescent coatings was carried out to prevent pressure vessel support collapse in the event of a fire. SA516 Gr. 70 steel specimens exposed to more extended heating times underwent tensile, hardness, and metallographic testing. The structural integrity, mechanical properties, and suitable technical recommendations for post-fire specimens coated with Dry Film Thickness (DFT) follow and below the BS-476's minimum standard calculation and uncoated specimens were examined for all heating times, i.e., for 20, 30, 40, 50, 60, and 70 min. The metallography test results reveal that fire in SA516 Gr. 70 steel without PFP significantly changes the material's microstructure and SA516 Gr. 70+PFP has relatively few significant microstructure changes. The specimen with the best tensile and hardness test values due to these microstructure changes is the SA516 Gr. 70 steel applied PFP with DFT follows BS-476's minimum standard calculation. The tensile test results show that the post-fire test value lasting 50 to 60 minutes satisfies SA516 Gr. 70 ASME Section II-A tensile requirements. Moreover, the hardness test results show a decrease in the post-fire hardness value of 70 minutes by only 6.34%. Based on the test result, SA516 Gr. 70 pressure vessel support that applied a PFP material has better structural integrity and post-fire mechanical properties than those without a PFP material. In addition, SA516 Gr. 70+PFP post-fire material with the appropriate DFT can still be used. Still, a microscope analysis of the base metal and new PFP replacements must be created to ensure the best structural integrity protection. Through this research, it can also be concluded that the application of PFP material significantly impacts the structural integrity and mechanical properties of SA516 Gr. 70 pressure vessel support when exposed to high temperatures due to fire.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Passive Fire Protection, Pressure Vessel, SA516 Gr. 70
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA418.16 Materials--Testing. T Technology > TA Engineering (General). Civil engineering (General) > TA418.42 Hardness properties and tests. Hardness--Testing. T Technology > TA Engineering (General). Civil engineering (General) > TA418.9.C57 Coatings T Technology > TA Engineering (General). Civil engineering (General) > TA660.T34 Tanks. Pressure vessels
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Tsurayya Ghaida Haifa
Date Deposited:	21 Jul 2023 02:08
Last Modified:	21 Jul 2023 02:08
URI:	http://repository.its.ac.id/id/eprint/98818

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