This study aims to analyze the possibility of using geothermal energy as an alternative energy source for the egg incubator hatchery with capacity of 400 eggs. Geothermal resource used in the process of retrofitting has a temperature of 70°C with a maximum flow of 2 liters/s in accordance with the data of geothermal resources at Tangeung -Cibugur, Cianjur regency. Based on the results of the feasibility studies that have been done, the source of geothermal energy can be used for heating egg incubator in order to reach adequate incubation conditions (temperature 36 to 38.5 ° C and a relative humidity of 50-60%). In the process of retrofitting, the design of the incubator used is forced draft incubator. Its components are heat exchanger, fans, and a water tray. The type of heat exchanger that used is cross flow, one fluid mixed, one fluid unmixed. It uses a staggered arrangement of copper pipe as a heat exchange surface. Incubator with geothermal energy is well used by using 5 fans with volume flow rate 0,0094 -0,0141 m 3 /s on the condition of the inlet air temperature is 23-27°C and a minimum pipe temperature is 65°C.

Shrimp is one of commodity that has a great demand by consumers both domestically and abroad as an export commodity. There are 2 types of shrimp that are cultivated in North Sumatra, namely Vannamei shrimp and tiger prawns. Cultivation of Vannamei shrimp has grown rapidly, replacing tiger prawns’ cultivation. The objective of the study is to analyse the affecting production factors for cultivating Vannamei shrimp. The research location was determined purposively in Medang Deras District, as it is one of the production centres for Vannamei shrimp. The entire population in the study area was sampled (using the census method). The multiple linear regression analysis method is used to analyse the data that has been collected through a survey using a questionnaire. The results showed that simultaneously, the feed amount, fry number, medicine amount and lime amount significantly affected the production. And partially, the feed amount, medicine amount and lime amount also significantly affected the production, while the fry number insignificantly affected the Vannamei shrimp production. The food amount significantly affected the production with the greatest coefficient value. The lime application at the research location was crucial because it negatively affected the Vannamei shrimp production.

Survey implementation is a way to get data of controlling fish pests and diseases. The impact of fish pests and diseases attacked cause of losses for aquaculture activity. However, there is no job safety analysis in implementation survey of fish pest and disease management. The aim of this study was to determine the job safety analysis in implementation survey to control fish pests and diseases. This research was conducted in 7 regencies/cities in Bangka Belitung Province from February to September 2021. This research used descriptive qualitative survey. Data collected by Walk Through Survey (WTS), interviews and documentation. Then, analyzed with Job Safety Analysis so the level of risk and impact on job safety can be assessed. The results of this study are the implementation survey of fish pests and disease management has low to high risk of work accidents. Some control efforts such as through administration, substitution and personal protective equipment (PPE) can prevent to work accidents.Key words : Analysis, Fishery, Job, Safety.