tailieunhanh - MANAGING FIRE WATER AND MAJOR SPILLAGES: POLLUTION PREVENTION GUIDELINES

Ozone is a gas that is composed of three oxygen atoms (O3). It is created by the oxides in the air’s nitrogen reaction with volatile organic compounds (VOC). Normally we think of ozone being higher in the atmosphere, also known as “good” ozone. However, when the conditions are right, ozone can occur at ground level, which is known as “bad” ozone. Sunlight and hot weather cause “bad” ozone in harmful concentrations. Thus in the summertime, urban areas have to be concerned about the amount of “bad” ozone. Why do you think urban areas are more. | Scottish environment protection agency Environment Agency ENVIRONMENTAL ALLIANCE - WORKING TOGETHER MANAGING FIRE WATER AND MAJOR SPILLAGES PPG18 POLLUTION PREVENTION GUIDELINES These guidance notes have been drawn up to assist in the identification of the equipment and techniques available to prevent and mitigate damage to the water environment caused by fires and major spillages. They are jointly produced by the Environment Agency for England and Wales the Scottish Environment Protection Agency SEPA and the Environment and Heritage Service for Northern Ireland referred to as the Agency or Agencies. Please contact your local Agency Office for further information. Contact details will be found at the end of these guidelines. 1. INTRODUCTION a. The Agencies guidance on industrial sites PPG11-Reference 1 provides basic advice on pollution prevention. This guidance document gives examples of good practice for the protection of the environment in the management of run-off generated in the event of fire or fire water and major spillages. It aims to help site operators consider what is appropriate for a specific site taking into account the risks and site layout. It is intended principally for those with responsibility for both new and existing medium to large sites. However much of the information will be relevant for smaller sites especially those where high risk activities are carried out. It focuses on containment strategies physical structures that can be used to contain firewater and spillages so called secondary containment facilities and equipment. Other approaches to protect the environment such as operational and management controls should also be considered. All of these measures physical operational and managerial should be supported by contingency or pollution incident response plans see PPG21-Reference 2 to reduce the impact of any unplanned event that does occur. b. Most industrial and commercial sites have the potential to cause significant environmental

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