Environmental Codes of Practice. Sewage Interception Pipeline

Transcription

1 Public Disclosure Authorized Public Disclosure Authorized Public Disclosure Authorized Public Disclosure Authorized World Bank-financed Jiangxi Poyang Lake Basin and Ecological Economic Zone Small Town Development Demonstration Project Ruijin City Mianjiang River (Lucao Lake) Wetland Protection and Utilization Subproject Environmental Codes of Practice For E4011 V17 rev Sewage Interception Pipeline Institute of Poyang Lake Eco-economics, Jiangxi University of Finance and Economics Beijing Huaqing Lishui Environmental Technology Co., Ltd. Environmental Engineering Technology Development Center, Jiangxi Academy of Sciences September 2012

2 Table of Contents Chapter 1 General Project Background... 3 Chapter 2 Construction Site Management Setting of Construction Nameplate Setting of Construction Enclosure Setting of Construction Curb Fender Setting of Interim Road... 6 Chapter 3 Regulations on Management in Operation Period Risk Prevention and Control Environment Management at Operation Stage... 7 Appendix 1 Checklist of Construction Management... 8 Map 1 Project Location Map... 12

3 Chapter 1 Overview 1.1 Project Background World Bank-financed Jiangxi Poyang Lake Basin and Ecological Economic Zone Small Town Development Demonstration Project is a demonstration project of Jiangxi Province, which aims to promote the harmonious development of ecological protection and urban construction, to improve urban and rural infrastructure, and to accelerate the urban and rural integration of the province by introducing international experiences with loan project as carrier, and according to Chinese urbanization development strategy as well as the urbanization demand of Jiangxi Poyang Lake Basin and Ecological Economic Zone. This Annex is the Environmental Codes of Practice for sewage interception pipeline network in Xianghu Yaoqianba Wetland Utilization Component under Ruijin City Mianjiang River (Lucao River) Wetland Protection and Utilization Subproject, World Bank-financed Jiangxi Poyang Lake Basin and Ecological Economic Zone Small Town Development Demonstration Project; and together with the Environmental Codes of Practice for Small Civil Works (Annex 1.1), it forms complete Environmental Codes of Practice for sewage interception pipeline network. For detailed engineering contents, please refer to Table 1. Project name Sewage interception pipe network Inspection well Table 1 Engineering Contents Contents DN600mm, 0.5km long; DN800mm, 1km long; DN1000mm, 1.3km long Φ1000mm, 15 wells, brick; Φ1200mm, 28 wells, concrete; Φ1400mm, 35 wells, concrete. Chapter 2 Construction Site Management As the main content of the Environmental Codes of Practice, this chapter brings forward the special environmental protection measures to be adopted by contractor in municipal pipeline network and the basic requirements on environmental management. This chapter briefly introduces the requirements on management of construction site, mainly including the construction nameplate, construction enclosure, curb fender, interim road, construction camp, and accident risk prevention and management. Construction unit must observe the management regulations of local environmental protection department, and accept the frequent inspection of environmental supervisor. 3

4 2.1 Setting of Construction Nameplate (1) On construction nameplate, the construction unit shall provide the information on construction and work schedule, service interruption, traffic detours and interim public traffic lines, and relocation, etc.; (2) Limit construction activities at night; (3) If necessary, control the impacts of construction at night on surrounding areas, and notify the surrounding communities in advance so that the people there can take necessary actions; (4) Inform the public of service interruption (including of water, electricity, fuel gas, and public traffic lines) at least five days ahead by putting up a notification at project site, public traffic stops, as well as affected residents and enterprises. 2.2 Setting of Construction Enclosure (1) The enclosure set up shall be straight, orderly, clean, beautiful, and damage-free, and the appearance shall be harmonious with surrounding environment; (2) The enclosure constructed on road shall be within 5m range of visibility at crossroad. Straight and rigid enclosure of metal mesh panel shall be set up without blocking the visual line of drivers and pedestrian, and in the precondition of guaranteeing traffic safety. Within 5m range of visibility, it s forbidden to stack any article. (3) In case the enclosure is equal to or less than 5m from residence, or the construction point is equal to or less than 15m from sensitive buildings like residence, hospital and school, etc., proper measures shall be taken to lower the noise, such as raising the enclosure, etc., and the enclosure in sensitive areas shall be up to 3m high; and the scope of 5m outside the enclosure shall be kept clean. (4) Never stack materials, tools, and earthwork, etc. within the scope of 1m inside the enclosure. (5) For works with construction period of more than 30 days, the boundary of construction site shall be enclosed and have color plate enclosure; the enclosure shall be at equal to or more than 2.5m/ 3m at construction site of common areas/ key areas respectively; (6) Never use the enclosure as retaining wall or the support of other facilities and equipment; (7) For pipeline works in key areas, the boundary of construction site shall be closed 4

5 down, and shall have enclosure. (8) In case hidden well cover is opened or raised for construction on urban road maintained open to traffic, folding construction curb fender shall be adopted at the boundary of construction area; (9) Never stack materials, tools and earthwork, etc. within the scope of 1m at the internal side of enclosure. 2.3 Setting of Construction Curb Fender (1) There shall be curb fender at the construction boundary for road-occupied pipeline works with construction period equal to or more than 30 days; (2) Never use red and white flag, safety isolation rope, or other materials to replace the construction curb fender. (3) Enclosure shall be closed down continuously when construction curb fender is used; and all construction curb fenders shall be fastened solidly and uniformly, and maintained clean and damage-free; (4) In case hidden well cover is opened or raised for construction on urban road maintained open to traffic, folding construction curb fender shall be adopted at the boundary of construction area; (5) The setting of construction curb fender shall surely make the long-side section of channel steel on the foundation face towards construction area; in case construction passageway is set up between construction curb fender and construction area, the passageway shall be equal to or more than 0.6m wide; (6) Construction unit s name shall be printed horizontally on construction curb fender. Never use construction curb fender non-accordant with the unit s name at construction site; (7) In case the external surface of buildings (structures) is painted, refurbished, or cleaned, construction curb fender shall be used as fully-closed enclosure at the boundary of construction area, and various mechanical equipment, tools, and materials shall be placed within the scope of enclosure; (8) Never remove construction curb fender before the road construction takes interim passing measures or the works is completed; (9) In key areas, road pipeline shall be constructed by means of excavating a section, paving a section, and renovating a section, and the whole pipeline shall never be excavated simultaneously. 5

6 2.3 Setting of Interim Road (1) For construction occupying urban road, the construction unit shall observe relevant regulations of public security, traffic department, and road administration department, handle relevant examination and approval formalities, and set up interim road according to specifications; (2) Construction unit shall observe the license regulations on construction period strictly, and shall never execute construction by occupying road or exceeding the licensed construction period; (3) Set up interim road according to regulations for construction occupying urban road and impacting the travel of vehicles and pedestrian; (4) For construction occupying footway, the construction unit shall build up solid, flat and continuous pedestrian shortcut with safety edge enclosure at the access side neighboring to commerce, enterprises, office building or residence, etc., and dispatch special personnel to guide the traffic at peak period of traveling, in order to guarantee the safe passing of the pedestrian; (5) The construction unit shall adopt sheet flattening method for construction in case the ditch or pipeline slot is excavated on urban road which is used as traffic road, and the works can not be completed on the very day; (6) The supporting and consolidation scheme shall pass safety argumentation, and be reported to construction unit for approval; the steel plate covering road shall be at least equal to or more than 0.03m thick. The edge of the steel plate and metal slope rack adopted shall be burnished to remove sharp edges and burrs, in order to ensure the safety of personnel and vehicles; (7) Metal shape shall be adopted for supporting and consolidating the lower end of covering steel plate in case the excavation width of ditch (pit) is equal to or more than 0.8m. Chapter 3 Regulations on Management in Operation Period 3.1 Risk Prevention and Control The risk prevention and control measures mentioned herein mainly aim at the examination & repair and cleaning of inspection wells in project operation. Inside inspection wells, there are gases like methane, CO, and hydrogen sulfide, etc., so the project has risks in operation period, and corresponding measures shall be adopted in this period: 6

7 (1) Surely set up warning sign and eliminate barriers from the surface of pool to ensure the smoothness of traffic before cleaning inspection wells, and evacuate non-operating personnel before lifting the pool cover; (2) Never use drilling steel and anus anvil, etc. to pry the cover on inspection wells, in order to avoid sparkle, combustion and explosion; (3) In case electric motor is used to draw and drain sewage, check whether the motor, power source, circuit, and knife switch, etc. are of creepage, in order to avoid electric shock; (4) Before desilting in a well, operating personnel shall eliminate harmful gases like CO, CO2, hydrogen sulfide and methane, etc. from the well by means of natural ventilation, and use relevant instrument to test the well and to confirm that the well is safe and harmless; (5) Operators of wells shall wear anti-static clothes, and shall never bring hard metal objects like keys, etc. into the well; (6) Personnel operating above the well shall hold safety belt in the hand, and keep contact with the personnel in the well anytime; (7) After completion of cleaning, restore the well cover and execute renovation; in case the works can not be completed on the very day, operating personnel shall set up warning sign or protective enclosure here. 3.2 Environment Management at Operation Stage (1) Inspection wells shall be cleaned periodically, inspected frequently, and repaired in time, in order to ensure the smoothness and soundness of sewage interception pipelines and inspection wells; (2) Never pour garbage, pollutants, and impurities into inspection wells, or stack impurities or house above inspection wells, or reconstruct the pollution discharge pipeline at random; (3) Inspection wells shall be covered airtight in order to prevent stink and accidents; (4) Never use open fire nearby inspection wells; (5) Mud residue cleared off from inspection wells shall be transported to the specialized treatment factory specified by the municipal environmental health authorities, with relevant records made, in order to avoid cross contamination. 7

8 Appendix 1 Checklist of Construction Management No.: Contract No. and name: Project name: CC: Current construction stage: Checked by: Date: Inspection items Whether metal shape is adopted for supporting and consolidating the lower end of covered steel plate in case the excavation width of ditch (pit) is equal to or more than 0.8m 2. Whether construction activities at night are limited; whether the impacts of construction at night on surrounding areas is controlled, and whether the surrounding communities are notified in advance so that the people there can take necessary actions 3. Whether the public are informed of service interruption (including of water, electricity, fuel gas, and public traffic lines) at least five days ahead by putting up a notification at project site, public traffic stops, as well as affected residents and enterprises 4. Whether the enclosure is set up straight, orderly, clean, beautiful, and damage-free, with the appearance harmonious with surrounding environment 5. Whether the enclosure constructed on road is within 5m range of visibility at crossroad; whether straight and rigid enclosure of metal mesh panel is set up without blocking the visual line of drivers and pedestrian, and in the precondition of guaranteeing traffic safety; whether it s forbidden to stack any article within 5m range of visibility 6. In case the enclosure is equal to or less than 5m from residence, or the construction point is equal to or less than 15m from sensitive buildings like residence, hospital and school, etc., whether proper measures are taken to lower the noise, such as raising Impl eme nted Implementation condition Not implem ented Inappli cable Remark/ suggested action 8

9 Inspection items the enclosure, etc., whether the enclosure in sensitive areas is up to 3m high; and whether the scope of 5m outside the enclosure is kept clean 7. Whether it s forbidden to stack materials, tools, and earthwork, etc. within the scope of 1m inside the enclosure. 8. For works with construction period of more than 30 days, whether the boundary of construction site is enclosed and has color plate enclosure; whether the enclosure is at equal to or more than 2.5m/ 3m at construction site of common areas/ key areas respectively 9. Whether the setting of construction curb fender surely makes the long-side section of channel steel on the foundation face towards construction area; in case construction passageway is set up between construction curb fender and construction area, whether the passageway is equal to or more than 0.6m wide 10. Whether the construction unit s name is printed horizontally on construction curb fender; whether it s forbidden to use construction curb fender non-accordant with the unit s name at construction site 11. In case the external surface of buildings (structures) is painted, refurbished, or cleaned, whether construction curb fender is used as fully-closed enclosure at the boundary of construction area, and whether various mechanical equipment, tools, and materials are placed within the scope of enclosure 12. Whether construction curb fender is removed before the road construction takes interim passing measures or the works is completed 13. Whether metal shape is adopted for supporting and consolidating the lower end of covering steel plate in case the excavation width of ditch (pit) is equal to or more than 0.8m 14. Whether it is forbidden to use the enclosure as Impl eme nted Implementation condition Not implem ented Inappli cable Remark/ suggested action 9

10 Inspection items retaining wall or the support of other facilities and equipment 15. For pipeline works in key areas, whether the boundary of construction site is closed down, and shall has enclosure 16. In case hidden well cover is opened or raised for construction on urban road maintained open to traffic, whether folding construction curb fender is adopted at the boundary of construction area 17. Whether there is curb fender at the construction boundary for road-occupied pipeline works with construction period equal to or more than 30 days 18. Whether it s forbidden to use red and white flag, safety isolation rope, or other materials to replace the construction curb fender 19. Whether the enclosure is closed down continuously when construction curb fender is used; and whether all construction curb fenders are fastened solidly and uniformly, and maintained clean and damage-free 20. In key areas, whether road pipeline is constructed by means of excavating a section, paving a section, and renovating a section, and whether the whole pipeline is never excavated simultaneously 21. For construction occupying urban road, whether the construction unit observes relevant regulations of public security, traffic department, and road administration department, handles relevant examination and approval formalities, and sets up interim road according to specifications 22. Whether the construction unit observes the license regulations on construction period strictly, and never executes construction by occupying road or exceeding the licensed construction period 23. Whether interim road is set up according to regulations for construction occupying urban road and impacting the travel of vehicles and pedestrian 24. For construction occupying footway, whether the Impl eme nted Implementation condition Not implem ented Inappli cable Remark/ suggested action 10

11 Inspection items construction unit builds up solid, flat and continuous pedestrian shortcut with safety edge enclosure at the access side neighboring to school, commerce, enterprises, office building or residence, etc., and dispatches special personnel to guide the traffic at peak period of traveling, in order to guarantee the safe passing of the pedestrian 24. Whether the construction unit adopts sheet flattening method for construction in case the ditch or pipeline slot is excavated on urban road which is used as traffic road, and the works can not be completed on the very day 25. Whether the supporting and consolidation scheme passes safety argumentation, and is reported to construction unit for approval; whether the steel plate covering road is at least equal to or more than 0.03m thick; whether the edge of the steel plate and metal slope rack adopted is burnished to remove sharp edges and burrs, in order to ensure the safety of personnel and vehicles 26. Whether metal shape is adopted for supporting and consolidating the lower end of covering steel plate in case the excavation width of ditch (pit) is equal to or more than 0.8m 27. Others Impl eme nted Implementation condition Not implem ented Inappli cable Remark/ suggested action 11

12 Map 1 Project Location Map Xianghu Yaoqianba Wetland Renovation, Protection and Utilization Area 12