Wastewater treatment plant (WWTP) is considered one of the most dangerous sectors in the industrial field. Many workers still die each year due to poor awareness of workers about occupational health. Safety performance became important for different projects in the industrial field. Safety performance is concerned about the general behaviour of the workers in the worksite, usually, the performance can be evaluated by managing systems and identifying health hazards that can happen in the field. Many researchers tried to summary different methods to rate the safety performance. This paper describes the significant topics in risk assessment and hazard identification that have been done in the field of wastewater treatment plant (WWTP). The collected investigations have been arranged and sorted in this paper to set up strong basic information for the works in the field. Unlike the other studies, this paper is focused mainly on the safety performance, health hazard and risk assessment in the wastewater treatment plant (WWTP). This study has found the specific factors that can affect the performance of workers since the workers in general workplaces are facing difficulties in determining the hazards that can be resulted in serious problems such as injuries and death.

In response to rising public demand for corporate, industrial, and private expansion, as well as low- cost residential construction, Turkey's development sector has burst in recent decades, and the Turkish government has placed a significant focus on industry. As a result, a methodical approach is required to cut down on money, time and waste. In the building business, dealing with the problem appears to be critical. It is debatable whether Supply Chain Management), a concept that first appeared and progressed in the automobile manufacturing industry, where it has found success, is one of the reliable practices that could primarily be the remedy for the construction industry's dispute, time, and cost excess. According to the construction sector, supply chain management has a lot of promise for increasing project productivity. This method, however, has not been effective in many nations, notably in Turkey. The major purpose of this study is to evaluate and examine the SCM implementation process in the Turkish construction sector based on previous studies, with an emphasis on efficient building procurement and supply. This will be accomplished by a rigorous literature analysis that will distinguish the industry's flaws and strengths. The benefits of SCM application in the construction sector, hurdles to successful SCM implementation in the purchase and delivery of building materials, and elements that reinforce the implementation will all be part of our study's model framework.