Pendugaan Reliability Waduk Nadra Krenceng PT. Krakatau Tirta Industri
Abstract: The increasing of
high population rate, plus there was a new steel industry named PT. Krakatau
Posco in Cilegon has made higher demand of
clean and raw water. The Volume of Nadra Krenceng reservoir used by PT.
Krakatau Tirta Industri is still doubted to fulfill water demand in Cilegon.
The purpose of this research to analyze
how much the reservoir volume capacity that will always be available and makes
the program with Visual Basic Application in Microsoft Excel. The reliability
calculation of Nadra Krenceng reservoir was conducted using three methods; F.J
Mock, NRECA dependable discharge, and simulation the result of both methods use
Weibull Method. The simulation result of Weibull Method shows for F.J Mock
dependable discharge with probability of 95%, 90%, 80% and 50% are 5,023,095
m3; 5,733,905 m3; 7,215,525 m3; and 11,600,385 m3 respectively. For NRECA
Method simulation, the result with the same series probabilities are 3,831,718
m3; 4,531,326 m3; 5,930,542 m3; and 10,128,191 m3 respectively. The
Probabilities used by PT. KTI to guarantee the water availability in Nadra
Krenceng reservoir is 80%. To conclude, the available volume of Nadra Krenceng
reservoir now 7,215,525 m3 for F.J Mock Method and 5,930,542 m3 for NRECA
Method. Both of calculation of water availability of Nadra Krenceng reservoir
could achieve good enough accuracy. The R2 values for F.J Mock Methods is 0.685
and 0.653 for NRECA method.
Penulis: Yanuar Chandra
Wirasembada, Satyanto Krido Saptomo, Muhamad Budi Saputra
Kode Jurnal: jptsipildd160350
