ANALYSIS AND MANAGEMENT OF POLYCHLORINATED BIPHENYLS (PCBS) AT TEMPORARY STORAGE OF HAZARDOUS AND TOXIC WASTE OF PLN UP3

(United Nations Industrial Development Organization), and GEF (Global Environment Facility) 2001 has implemented the "Introduction of an Environmentally-sound Management and


Introduction
Persistent Organic Pollutants (POPs) are organic compounds that are resistant to environmental degradation through chemical, biochemical and photo-oil processes (Zacharia, 2019). Therefore, POPs can survive in the environment, travel long distances, accumulate biologically in human and animal tissues, participate in the food chain, and have a significant impact on human health and the environment (Soto et al., 2013).
The government through the Ministry of Environment and Forestry has ratified international environmental agreements related to persistent organic pollutants (Yadav et al., Disposal System for PCB-Wastes and PCB-Contaminated Equipment" project where one of the activities carried out are the PCBs Inventory (Thomas, 2017 (Kurniawati, 2022). In carrying out its business PT PLN (Persero) also produces waste that has a direct connection with relevant environmental sustainability issues such as environmental pollution, B3 waste, carbon emissions, use of natural resources, and others (Basuki, 2015). One of the B3 wastes produced is transformer oil waste originating from used transformers that are no longer usable and are included in the ATTB (Not Operating Fixed Assets) category. Transformer waste production year < 1997 is indicated to contain PCBs (Polychlorinated Biphenyls) which are Persistent Organic Pollutants (POPs) that are harmful to the environment and humans.

Research methods Materials and Tools
The equipment used in this research is the Dexsil L2000DX/Chloride Analyzer. Dexsil L2000DX/Chloride Analyzer is one of the PCBs detection equipment (Kattel & Devkota, 2015). This test kit detects the presence of chlorinated organic materials and not PCBs. The result categories are; if the result is negative it indicates the absence of PCBs, if the result is positive it indicates the presence of PCBs, and further confirmation is required using procedures with more sophisticated laboratory equipment (Rodrigues et al., 2015).

Sampling Methods
The samples used were 12 (twelve) offline transformer oils in the B3 Waste Temporary Storage and 32 questionnaires from K3 and Environment employees related to the important role of technology in the offline transformer inventory system.

Research Variables
The research analysis was carried out using descriptive qualitative methods. Primary and secondary data collection is done by (Meirinawati et al., 2018); a) Collecting secondary data (from the management report of the related company's temporary storage of hazardous and toxic waste materials). b) Conducting a literature review from published scientific journals, c) Make direct observations, d) Using questionnaire questions to employees who work in related departments. Not all PCBs must be destroyed. The criteria for PCBs that must be destroyed are PCBs that exceed the threshold, namely > 50 ppm. Meanwhile, if the content of PCBs is <50 ppm, Retrofit is carried out, which is emptying the oil from the transformer and replacing the oil with non-PCBs.

Results and Discussion
Management of hazardous and toxic waste (B3) must be managed properly to prevent environmental pollution (Exposto & Sujaya, 2021 (Hansen et al., 2022). Transformer oil that is not contaminated with PCBs can be transported by transformer oil transport and management companies that already have permits from the Ministry of Environment and Forestry and the local Transportation Service (Granberg et al., 2017).

Offline Transformer Setup
In the Environmental Safeguard program, there are several programs, one of which is the placement and labeling of B3 waste (Offline Transformer Oil) following the year of transformer production, namely ≤1997, >1997 and transformer oil which has been indicated to contain Polychlorinated Biphenyls (PCBs). Transformer oil which contains Polychlorinated Biphenyls (PCBs), is given a special label with the symbol (Dangerous for Environment and Carcinogenic, Tetragenic, Mutagenic') and PCBs labeled. For transformers < 1997, testing must be carried out first because it is indicated to contain PCBs (Polychlorinated Biphenyls). If the content is > 50 ppm, it can cause cancer, decreased endurance, and increased risk of heart disease, hypertension, diabetes, reproductive system disorders, and nervous system disorders.

Figure 2 Arrangement of Offline Transformers in Temporary Storage of Hazardous and Toxic Waste Materials
In the Environmental Safeguard program, there are several programs, one of which is the placement and labeling of B3 In Figure 2

Conclusion
Management of B3 waste (offline transformer oil) must be carried out properly so that there is no pollution to the surrounding environment and its management must be following the applicable laws and regulations. The test results on twelve samples of offline transformer oil were 66.7% undefined PCBs and 33.3% contaminated PCBs.
The results of environmental monitoring on all parameters are still below the Environmental Quality Standard, it can be concluded that there is no pollution in the surrounding environment.