Analysis of Geothermal Gas Testing Service Time Using Value Stream Mapping at Quality Testing Laboratory

DOI

10.2991/978-94-6463-618-5_2How to use a DOI?

Keywords

Renewable Energy Laboratory; Lean; Value Stream Mapping

Abstract

Quality Testing Laboratory is a central geothermal laboratory at PT XYZ. In 2020 the company implement centralization policy which led to significant increase of gas analysis demand, resulting in 45% of gas analysis were not complied with laboratory service level agreement (30 days). This study focuses on analyzing lead time and wastes in geothermal gas testing and provide improvement suggestion. This study utilizes lean concepts through value stream mapping. The results indicate that the current state value stream mapping shows a process efficiency of 10.39%, a total lead time of 1068.38 min, non value added time of 1049.67 min, and value-added (VA) time of 111.03 min. The highest waste is delay/waiting (675.90 min), evidenced by high batch size for each analysis activity. The improvement suggestions are two scenarios of FS VSM. Scenario 1 provides process of optimization through one-piece flow implementation. Scenario 2 provides process optimization through one-piece flow implementation, increase equipment utilization & technology, and additional personnel. FS VSM 1 provides a process efficiency of 27.55%, a total lead time of 376.08 min, NNVA and NVA of 358.073 min, VA of 103.79 min, with an estimated implementation without additional operational and investment costs. FS VSM 2 offers a process efficiency of 68,36%, a total lead time of 94.642 min, NNVA and NVA of 75.932 min, an estimated implementation time of 12 months, with estimated investment cost Rp 2.295.000.000 in the first year with BCR 1,98 in ten years.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Muhammad Iqbal Alkindi
AU  - Didit Damur Rochman
PY  - 2024
DA  - 2024/12/29
TI  - Analysis of Geothermal Gas Testing Service Time Using Value Stream Mapping at Quality Testing Laboratory
BT  - Proceedings of the Widyatama International Conference on Engineering 2024 (WICOENG 2024)
PB  - Atlantis Press
SP  - 7
EP  - 16
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-618-5_2
DO  - 10.2991/978-94-6463-618-5_2
ID  - Alkindi2024
ER  -