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BOD test bottles at the laboratory of a wastewater treatment plant. Biochemical oxygen demand (also known as BOD or biological oxygen demand) is an analytical parameter representing the amount of dissolved oxygen (DO) consumed by aerobic bacteria growing on the organic material present in a water sample at a specific temperature over a specific time period.
The advantage of the PSEM is that it eliminates the need for noise assessors to follow up with workers when the assessors measure the noise levels of the work areas. [ 26 ] Excessive noise can lead to occupational hearing loss . 12% of workers report having hearing difficulties, making this the third most common chronic disease in the U.S.
Construction phase plans (CPP or CPHP) must contain health and safety management systems and arrangements, and risk assessments and method statements for initial work activities. On non-notifiable projects involving demolition or high risk levels, a written plan, approximating the construction phase plan is recommended.
The construction industry is responsible for 5-15% of the economy of most countries. Working as a construction worker is one of the most dangerous occupations, with nearly more than 60,000 annual fatalities worldwide. [58] This is why it is not only essential for construction workers to use PPE, but it’s important that they use them properly.
Cain, C. T. (2004b). 'Performance Measurement for Construction Profitability'. ISBN 1-4051-1462-2. A detailed action-learning guidebook aimed at supply-side construction firms (including trades contractors) explaining why performance measurement is the key to lean construction. Cain, C.T. (2004a). ISBN 1-4051-1086-4. 'Profitable Partnering for ...
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The decision to recommission may be triggered by a change in building use or ownership, the onset of operational problems, or some other need. Ideally, a plan for recommissioning is established as part of a new building's original commissioning process or an existing building's retro-commissioning process."
In the construction and testing stage, the main activity of requirements management is to make sure that work and cost stay within schedule and budget, and that the emerging tool does in fact meet the requirements set. A main tool used in this stage is prototype construction and iterative testing.