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Abstrak :
Noise Induced Hearing Loss (NIHL) atau gangguan pendengaran akibat bising merupakan penyakit akibat kerja yang paling umum diderita di dunia. Diperkirakan 1,3 miliar orang menderita gangguan pendengaran akibat paparan kebisingan. PT. XYZ merupakan perusahan manufaktur industri pulp and paper yang memiliki pajanan kebisingan tinggi. Penelitian ini bertujuan untuk melakukan penilaian pajanan kebisingan dengan menggunakan pendekatan Bayesian Decision Analysis (BDA) dengan menentukan distribusi prior, distribusi likelihood dan distribusi posterior pada kedua SEG. Penelitian ini merupakan penelitian deskriptif analitik dengan pendekatan kuantitatif yang dilaksanakan pada bulan April - Mei 2023. Pengumpulan data dilakukan melalui observasi, pengukuran dosis kebisingan personal, dan expert judgment. Data dianalisis dengan menggunakan software IHData Analyst-AIHA dan EXPOSTATS. Hasil penelitian menunjukan bahwa terdapat variasi yang moderate pada kedua SEG. Distribusi probabilitas prior pajanan kebisingan pada SEG recovery boiler memiliki certainty level 1 pada kategori 4 (poor control) sedangkan pada SEG power boiler memiliki certainty level 0,995 pada kategori 4 (poor control) dan certainty level 0,005 pada kategori 3 (controlled). Distribusi probabilitas likelihood pada kedua SEG recovery boiler dan power boiler memiliki certainty level 1 pada kategori 4. Sehingga distribusi probabilitas posterior kedua SEG recovery boiler dan power boiler adalah masing-masing pada kategori 4 (poor control) dengan certainty level 1. Hal ini menunjukan bahwa pajanan kebisingan pada kedua SEG tidak dapat diterima (unacceptable). Peneliti menyarankan untuk melakukan pengendalian segera dengan menerapkan Hearing Consevation Program, melakukan refining SEG dengan uji variasi individual compliance test dan menggunakan metode BDA dalam melakukan penilaian pajanan kerja. ......Noise Induced Hearing Loss (NIHL) caused by noise is the most common occupational disease worldwide. It is estimated that 1.3 billion people suffer from hearing disorders due to noise exposure. PT. XYZ is a pulp and paper manufacturing company with high noise exposure. This study aims to assess the noise exposure using Bayesian Decision Analysis (BDA) approach by determining the prior distribution, likelihood distribution, and posterior distribution in both SEGs. This is descriptive analytic research with a quantitative approach conducted in April - May 2023. Data collection was done through observation, personal noise dosimetry measurement, and expert judgment. The data were analyzed using IHData Analyst-AIHA and EXPOSTATS software. The results of the study showed a moderate variation in both SEGs. The prior probability distribution of noise exposure in the recovery boiler SEG had a certainty level of 1 in category 4 (poor control), while in the power boiler SEG, it had a certainty level of 0.995 in category 4 (poor control) and a certainty level of 0.005 in category 3 (controlled). The likelihood probability distribution in both the recovery boiler and power boiler SEGs had a certainty level of 1 in category 4. Thus, the posterior probability distribution in both the recovery boiler and power boiler SEGs was categorized as 4 (poor control) with a certainty level of 1. This indicates that the noise exposure in both SEGs is unacceptable. The researchers suggest immediate control measures by implementing a Hearing Conservation Program, refining the SEGs through individual compliance test variations, and using the BDA method for occupational exposure assessment.

Abstrak :
Noise Induced Hearing Loss (NIHL) merupakan kejadian yang cukup banyak terjadi pada industry manufaktur yang diakibatkan oleh pajanan kebisingan. Pada PT NGK Busi Indonesia, Jakarta terdapat bahaya kebisingan yang bersumber dari mesin dan peralatan kerja. Penelitian dilakukan secara Cross-sectional atau potong lintang terhadap dosis pajanan bising harian dan keluhan gangguan pendengaran dengan melibatkan faktor perancu berupa usia, masa kerja, APT, merokok, hoby menembak, memakai head-set, menonton konser music rock, mengunjungi diskotik, riwayat penyakit telinga, obat oto/neurotoksik, dan penyakit degeneratif. Dengan metode pengukuran dosis pajanan bisisng harian dan pengisian kuisioner. Berdasarkan analisis hubungan dua variable hanya kebisaan merokok yang memiliki perbedaan yang nyata dengan keluhan gangguan pendengaran dengan nilai p-value < 0,05. Perlu ditingkatkan pelaksanaan Hearing Loss Prevention Program berupa audit awal, identifikasi dan analisi sumber bising, peningkatan pengawasan penggunaan APT, audiometry berkala, program motivasi dan edukasi, dokumentasi dan audit program HLPP.

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Noise Induced Hearing Loss (NIHL) is the most event that happen in industrial of manufacture. This event mostly associated by noise exposure. Many noise hazard in PT. NGK Busi Indonesia, Jakarta that sourced from machinery and other working equipment. This study designed by cross-sectional method againts daily noise dose exposure and hearing loss complaints that there are confounding factors such as working period, ear protective equipment, smoking, shooting hobby, listening music with head-set, watching rock concert, discotic, history of hearing illness, neurotoxic drugs, and degenerative illness. This study was using tools such as result of daily noise dose exposure measurement and fullfillment questionaire. According to relationship analysis of two variable there is only factor of smoking habit that have strongly associated with hearing loss complaints with p-value <0,05. This should be improvement of Hearing Loss Prevention Program Implementation such as initial audit, identification and analize noise source, supervise enhancement of ear protective equipment utilization, periodical audiometry, education and motivation programs, documentation and program audit of hearing loss prevention program.