Garuda - Garba Rujukan Digital

KECELAKAAN KERJA DALAM KEGIATAN EKSPLOITASI HUTAN DI KALIMANTAN TENGAH Maman Mansyur Idris; Soenarno Soenarno
Jurnal Penelitian Hasil Hutan Vol 5, No 1 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Logging in Central Kalimantan is generally mechanized, utilizing modern machines. Involved in these activities are local labourers, many among which have not benefited any adequate training for their jobs. They are originally farmers or farm labourers, and most of them had very little, if any education. It is therefore, not surprising that they can't operate or handle the machines properly.The logging industry is characterized by hard work requiring, high skill and alertness.Shortcomings in these qualities leads to accidents caused by inumerable factors that are constantly present in the tropical high forests. To develop safety programs research is needed to gather information on work accidents at various logging companies through the years. The aim of this study is to find out about the effects of mechanized logging systems on accident occurrences. The study was conducted in Central Kalimantan, resulting in the following conclusions :1. Accident frequency rate according to ANSI standard for 500 labourers ranges from 95 to 151 accident per million work hours.2. Accident severity rate according to ANSI standard for 500 labourers ranges from 4, 000 to 8, 000 days lost per million work hours

PENGARUH PENYARADAN KAYU DENGAN TRAKTOR RANTAI KELABANG TERHADAP PENGGESERAN DAN PEMADATAN TANAH HUTAN Maman Mansyur Idris; Yahya Fakuara; Gunarwan Suratmo; Rahardjo S Suparto
Jurnal Penelitian Hasil Hutan Vol 5, No 7 (1988): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

The study of the effect of log skidding by crawler tractors on forest soil displacement and compaction wall carried out in one logging company in West Kalimantan in 1986. The results of the study are as the following :The average volume of soil displacement was 0.06 cu.m/m of skid road, it i6 equal to 0.061 ton/sq.m. This level of soil displacement iis higher than the soil loss tolerance of 0.0002 ton/sq.m.Soil compaction as indicated by the average soil bulk density is 0.16 g/cu.cm. At this level of compaction, the porosity is 56% (far higher than 10% minimum porosity), which means that the growth of vegetation will be still favourable.The role of soil water content and slope on forest soil displacement was positively significant. The role of skidding intensity on forest soil compaction was positively significant and the role of soil water content and slope on forest soil compaction was negatively significant.

PEMBALAKAN RAMAH LINGKUNGAN UNTUK MINIMASI KERUSAKAN TEGAKAN TINGGAL: KASUS DI SATU PERUSAHAAN HUTAN DI KALIMANTAN TIMUR Maman Mansyur Idris; Sona Suhartana
Jurnal Penelitian Hasil Hutan Vol 15, No 3 (1997): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Pembalakan yang berdampak minimal terhadap lingkungan merupakan isu sentral dalam era ekolabel dan perdagangan bebas. Untuk itu penelitian ini telah dilakukan di satu perusahaan hutan di Kalimantan Timur pada tahun 1997. Tujuan penelitian adalah untuk menciptakan kondisi tegakan tinggal yang menjamin tercapainya pemanfaatan yang berkelanjutan dengan cara untuk meminimalkan kerusakan tegakan tinggal yang terjadi.Data yang dikumpulkan: (1) pohon ditebang, pohon berdiameter 20 cm dan ke atas, pohon yang rusak; (2) jumlah dan keadaan tiang; (3)jumlah dan keadaan pancang; (4) jumlah dan keadaan semai. Analisis data dilakukan dengan membandingkan kerusakan tegakan tinggal yang diakibatkan oleh teknik pemanenan konvensional dengan teknik terkontrol.Hasil penelitian menunjukkan bahwa rata-rata kerusakan tegakan tinggal tingkat pohon, tiang, pancang dan semai berturut-turut adalah 11,2%; 4,9%; 4,5% dan 5,7% untuk yang terkontrol. Sedangkan untuk konvensional besaran tersebut adalah 13, l %; 11, 9%; 12, 9% dan 14,4%. Telah terjadi penurunan kerusakan berturut-turut untuk tiang, pancang dan semai sebesar 7, l %; 8, 4% dan 8, 7% (berbeda sangat nyata pada taraf 99%).Berdasarkan hasil penelitian, maka dalam pelaksanaan pemanenan kayu seyogyanyalah menggunakan teknik terkontrol yang sesuai dengan aturan TPTl karena dapat meminimalkan kerusakan yang terjadi.

PRODUKTIVITAS DAN EFISIENSI PEMANENAN KAYU DENGAN TEKNIK PENEBANGAN POHON SERENDAH MUNGKIN DI HUTAN PRODUKSI ALAM: STUDI KASUS DI TIGA PERUSAHAAN HUTAN DI KALIMANTAN TENGAH Maman Mansyur Idris; Sona Suhartana
Jurnal Penelitian Hasil Hutan Vol 13, No 3 (1995): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1995.13.3.94-100

This paper presents the results of the study of wood harvesting productivity and efficiency when practicing the lowest possible felling technique. The case study was selected in three logging companies in Central Kalimantan in 1994. Then, the results are compared lo those obtained from conventional felling technique.the results of the study are as follow :1.The results of wood harvesting productivity is 25,2 m3/hr for lowest possible felling technique and 28,8 m3/hr for conventional felling. This difference is statisticallv significant.2.The average of wood harvesting efficiency is 86, 1 % for lowest possible felling technique and 82,1 % for conventional felling technique. This difference of 1,28 m3/tree is highl significant.3.The average of stwnp height when practicing the lowest possible felling technique is 0,45 m, while for conventional felling technique is 1,21 m.

PENGGUNAAN GERGAJI RANTAI PADA PENEBANGAN JATI DAN DAMPAKNYA TERHADAP KEBISINGAN DAN BEBAN KERJA Soenarno Soenarno; Maman Mansyur Idris
Jurnal Penelitian Hasil Hutan Vol 9, No 4 (1991): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1991.9.4.139-143

It is obvious that the use. of chainsaw in teak felling has some advantages not only in increasing productivity but also in reducing felling defects.Nevertheless, uaing chainsaw in teak felling has also created a lot of inconveniences to forest worker. Thess inclu de the distruction of physical climatic conditions and heavier phsycological stress of forest workers due to combined physical workload, noise and fear of accident effects.Base on the above reasons research on noise and forest workers' workstress. is needed. this research is intended to determine a better method of felling technique in the efforts of controlling noise to provide a more favourable conditions for the workers. This research was carried out in Saradan Forest District, East Java.The results of the research reveal that both noise and the workers' streu rate occurinf at teak felling ia higher than at acceptable by the "World medical conventiont" (Grandjean, 1982). The avercwe noise level rate it about 110 dB(A), and the average forest workers' streu is about 126 heart beats/min for chainsaW operator and about 98 heart beats/min for the helper.

KAJIAN FAKTOR EKSPLOITASI BERDASARKAN JENIS POHON : STUDI KASUS DI SATU PERUSAHAAN HPH DI KALIMANTAN BARAT (A study on Exploitation Factor in Forest Harvesting Based on Trees Species : A case study in one forest concession holder in West Kalimantan) Wesman Endom; Maman Mansyur Idris
Jurnal Penelitian Hasil Hutan Vol 14, No 1 (1996): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1996.14.1.16 – 23

Natural production forests in Indonesia have been harvested since 1970. In carrying out the harvesting of the forests, the goverment used a parameter so called Exploitation Factor (FE) as a basic calculation of annual allowable production. Currently the value of FE is 0. 7 regardless the species. The value means that only about 70% of log volume can be extracted from the forest in the cutting operation.In this study an analysis of FE was carried out to see whether it is necessary to differentiate the value based on tree species. Data were collected from real logging activity in the forest. An analysis using Honest by Significant Difference test showed that in reality there is no signifi cant difference among the means of FE. This result justifies the use of single value of FE for all species.Keywords: Forest, harvesting, logs, conversion factor.

ANTROPOMETRIK PENEBANG JATI DI BKPH BANDUNGSARI KPH PURWODADI PERUM PERHUTANI UNIT JAWATENGAH Sona Suhartana; Maman Mansyur Idris
Jurnal Penelitian Hasil Hutan Vol 7, No 1 (1990): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1990.7.1.28 - 33

Anthropometric data of the workers are essential in the practice of ergonomics, especially for the design of work places, machines and equipment in order to attain work comfort and increased work productivity.Anthropometric measurements were carried out to 18 teak loggers aging between 20-35 years. The measurements included: body, shoulder, elbow and hip height; shoulder and hip width; length of arm and. hand, length of upper arm, lower arm and hand;upper reach and arm span (measurements in standing position). In sitting position, the body measurements comprised sitting, elbow, hip and knee height; length of upper and lower log.The result shoures that elbow height of teak logger has high variability and decreo,se their working comfort and productivity. Lenght of arm and hand which are longer than axe handle on the other hand speed up working fatique and infficient work.

BEBERAPA MASALAH ERGONOMIK DALAM KEGIATAN PENEBANGAN DI KALIMANTAN BARAT Maman Mansyur Idris; Zakaria Basari
Jurnal Penelitian Hasil Hutan Vol 1, No 3 (1984): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1984.1.3.15-21

Preliminary study on ergonomics of forest concession was emphasized on mechanic operator activities with 62 respondents. The quetioneire consits of ten problem areas, namely audiometry, pollution, vibration, phisycal work load, logging equipment operation, work capacity, psychology of work load, accident, safety, and the inventory of past ergonomic research. In general, the research indicated that the forest concession holders were not well aware of the importance of ergonomic aspect in their ventures.

KONDISI TEGAKAN TINGGAL DI KAW ASAN DUA PERUSAHAAN HUTAN DI RIAU Sona Suhartana; Maman Mansyur Idris
Jurnal Penelitian Hasil Hutan Vol 14, No 4 (1996): Buletin Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.1996.14.4.129-137

Log skidding activities using tractors usually caused high residual stand damages. To reduce the residual stand damages, the factors influencing them must be identified. A study was carried out at two forest concessions in Riau in 1995. The aims of the study are : 1) to find the level of residual stand damages caused by felling ang skidding, 2) to identifY the factors influancing the residual stand damages and 3) to find the way of reducing residual stand damages.Data collected were the number of felled tress, trees with diameter 20 cm and up and damaged trees. The data was analysed by using the multiple regression.The results of the study show : 1) The average of residual stand damages caused by fellingis 11.5 %; 2) The average of residual stand damages caused by skidding is 15.4 %; and 3) The influence of the number of felled tress, stand density and the slope were highly significant to residual stand damages.Knowing the factors influencing the residual stand damages, ones should be easy to find the way of reducing that damages.Key words : felling, skidding, felled trees, residual stand damage

PENERAPAN SISTEM MEKANISASI DALAM KEGIATAN PENEBANGAN JATI UNTUK MENGURANGI KETERGANTUNGAN TERBATASNYA PENYEDIAAN TENAGA BLANDONG DI JAWA Maman Mansyur Idris; Soenarno Soenarno
Jurnal Penelitian Hasil Hutan Vol 6, No 8 (1990): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Sastrodimedjo, (1975) pointed out that the present trend of wood processing industry development and formal education of younger generation caused some problems, especially in the sustainabiliy of forest worker supply in Java.Based on this consideration an alternatif for most widely applied felling system, i.e. manual felling system, needs to be sought. With regard to this problem a study was conducted at three Sub Forest District (RPH), namely Temenggeng, Pasar Sore and Sumberogo in Central Java to compare 3 (three) felling systems in teak forest.The result of the study revealed that the teak felling productivity averages on 2 years gilrded teak with mechanical, manual and combination systems applied to flat terrain were 2.5359 m3/hour, 0.7128 m3/hour and 0.8186 m3/hour, respectively. But those on hilly terrain were 1.5540 m3/hour, 0.7374 m3/hour and 0.796 m3/hour, respectively. The average cost of full mechanical felling system applied to flat terrain was Rp 1,586.23/m3, while that of on hilly terrain was Rp 2,l 65.93/m3

Title

Found 38 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 38 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 38 Documents
Search