PENGKAJIAN UNJUK KERJA KOMPONEN NEAR SURFACE DISPOSAL: COVER UNTUK DEMOPLANT DISPOSAL

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STUDY OF PERFORMANCE ASSESSMENT OF NEAR SURFACE DISPOSAL
COMPONENT: COVER FOR DEMOPLANT DISPOSAL. Near Surface Disposal (NSD) has three
components as main barrier system such as waste package, site and disposal facilities. At this
year, study of cover performance as part of the engineering barrier system in the NSD disposal
facilities has been conducted for recommendation suit cover in the Demoplant Disposal facilities.
Method of work is description method by literature study, gathering information about various
disposal type that has been applied in another countries with the purpose to obtain supporting data
in the development of Demoplant NSD in Serpong Nuclear Zone. Performance assessment of
cover has been analysed by software HELP version 3.07 with weather data based on Serpong area
and using default soil texture from database. Serpong Nuclear Zone are an area that has fairly high
rainfall and the site of Demoplant NSD are located in SP4 with an area 6.300 m2 that having a
slope area in the west side of Demoplant NSD site. So that recommendation for cover type is multilayered
cover with dome type design (slope 2-3 %) that accompanied with drainage system. Cover
material consists of vertical percolation layer that also as protection layer (consists of vegetated
soil, coarse rock and gravel), two drainage layer (primer and secondary consists of sand layer) that
separated by membran liner, and barrier layer that is low-impermeability material such as bentonite
or clays.
Keywords: Near Surface Disposal, cover, engineering barrier, hydrologic.

ENGKAJIAN UNJUK KERJA KOMPONEN NEAR SURFACE DISPOSAL: COVER UNTUK
DEMOPLANT DISPOSAL. Near Surface Disposal (NSD) memiliki tiga komponen barrier utama
yaitu kemasan limbah, tapak dan fasilitas disposal. Pada tahun ini telah dilakukan pengkajian unjuk
kerja cover sebagai bagian dari penghalang teknis pada fasilitas disposal NSD untuk rekomendasi
cover fasilitas Demoplant Disposal. Metode yang diterapkan adalah metode deskripsi dengan cara
penelusuran pustaka, mengumpulkan informasi tentang berbagai tipe disposal dari negara lain
dengan tujuan mendapatkan data untuk mendukung pembangunan Demoplant NSD di IPLR
Kawasan Nuklir Serpong. Analisis unjuk kerja cover menggunakan perangkat lunak HELP
(Hydrologic Evaluation of Landfill Performance) versi 3.07 dengan basis data cuaca Serpong dan
karakteristik tanah default perangkat lunak. Kawasan Nuklir Serpong merupakan daerah yang

memiliki curah hujan yang cukup tinggi dan lokasi calon Demoplant NSD terletak di SP4 dengan
luas area 6.300 m2 dan memiliki kemiringan lereng di bagian Barat sehingga rekomendasi tipe
cover yaitu multi-layered cover dengan bentuk desain berupa kubah (slope 2-3 %) disertai dengan
sistem drainase. Komponen cover terdiri dari layer resapan yang juga berfungsi sebagai layer
proteksi biologis berupa vegetasi dengan tanah, batuan dan kerikil, dua layer drainasi (primer dan
sekunder berupa lapisan pasir) yang dipisahkan oleh layer membran, dan layer barrier dengan
impermeabilitas rendah berupa lempung atau bentonit terkompaksi.
Kata kunci: Near Surface Disposal, cover, penghalang teknis, hydrologic.
ABSTRACT
STUDY OF PERFORMANCE ASSESSMENT OF NEAR SURFACE D