Presentation on theme: "1 Air Pollution Control « Air Pollution Control Ordinance » ( Chapter 311 )"— Presentation transcript:
1 Air Pollution Control « Air Pollution Control Ordinance » ( Chapter 311 )
2 (Construction Dust) Regulation (Specified Processes) Regulation (Smoke) Regulation (Fuel Restriction) Regulation (Open Burning) Regulation « Air Pollution Control Regulations » Relevant to the Construction Industry
4 (Smoke) Regulation (Fuel Restriction) Regulation « Air Pollution Control Regulations » Relevant to the Construction Industry
5 Air Pollution Control (Open Burning) Regulation Purpose Prohibit / Control Open Burning Activities Effective date 26 Feb 1996
6 Disposal of construction Waste Site clearance Disposal of Tyres Salvage of metal Prohibited Open Burning
7 1. Allow at least 28 days for application 2.The applicant shall prove a.an absolute need for the burning; b.there is no other practical alternative means of waste disposal; and c.there will not be adverse environmental impact. 3.The Authority may impose terms and conditions in the permit. Application for Open Burning Permit
9 Purpose Employ effective dust abatement measures to Reduce dust emission, Reduce air nuisance, and Improve general air quality. Set out appropriate dust control measures and make them as standard practice in the construction industry. « Air Pollution Control (Construction Dust) Regulation »
10 Classification of Construction Works Three main types of construction works: –Notifiable work: building demolition, construction of superstructure, site formation, reclamation, etc. –Regulatory work (Notification not required) : road opening /resurfacing, external renovation, slope stabilization. –Excluded work (Notification not required) : internal renovation, specified process, etc.
11 Notifiable Work Road construction work Demolition of a building Construction of building foundation Construction of building superstructure Site formation Reclamation Work carried out in any part of a tunnel that is within 100 m of any exit to the open air
12 Form NA Air Pollution Control Ordinance (Chapter 311) Notification pursuant to Section 3(1) of the Air Pollution Control (Construction Dust) Regulation Notification Form
13 Dust Control Requirement
14 Part III of Schedule General Control Requirements
15 Stop operating the relevant plant or dusty process if there is breakdown of air pollution control equipment. Avoid using compressed air jet to clean off dust. General Requirements
16 Vehicle washing Automatic washing machine Hoarding Site Boundary and Exit Provide vehicle washing facilities. Pave the area between site exit & the vehicle washing facilities. Provide 2.4 m hoarding along site boundary.
17 Main Haul Road (4 or more vehicles passing in any 30 minutes) Pave with concrete, bituminous materials, hard cores, etc. and keep clear of dusty materials; or Maintain entire road surface wet.
18 Road Leading Only to A Construction Site Clear dusty materials from the portion of any such road within 30 m of vehicle entrance / exit.
19 Do not store in open area Store in sheltered area Provide cover Bagged cement exceeding 20 nos should be covered or enclosed in area sheltered on the top and the 3 sides. Cement
20 Bulk Cement or PFA stored in closed silo with high level alarm. Cement
21 Exposed earth compacted Exposed earth treated with hydroseeding Treat by compaction, hydroseeding, vegetation planting, etc. within 6 months after the last construction activity. Exposed Earth
22 Dusty Materials Collected by Fabric Filters or Other Equipment Dispose of in enclosed containers. Do not store in open area.
23 Part IV of Schedule Control Requirements for Individual Activities
24 Stockpiling of Dusty Materials Cover entirely by impervious sheeting; Place in an area sheltered on the top and the 3 sides; or Maintain entire surface wet.
25 Loading, Unloading or Transfer of Dusty Materials Wet dusty materials with water spraying prior to operation.
26 Enclose the belt conveyor from the top and the 2 sides. Enclose the transfer point between conveyors. Install belt scraper and bottom plates. Maintain vertical distance between belt conveyor outlet and material landing point at <1 m. Enclose the unloading area. Transfer of Dusty Materials with a Belt Conveyor System Transfer point enclosed
27 Use of Vehicles Wash every vehicle before leaving the site to remove dusty materials from body and wheels. Cover any load of dusty materials. Wash vehicle before leaving site Load on truck covered Load on truck inadequately covered
28 Dust collection system to control dust emission Wet the breaking area to control emission Drilling, Cutting & Polishing, etc Spray surface continuously with water. Equip with effective dust extraction and filtering device. Drilling without watering
29 Debris Handling Cover or store debris in area sheltered on the top and the 3 sides. Enclose the debris chute. Wet debris before dumping into chute. Enclosed debris chute and collection area
30 Excavation or Earth Moving Spray the working area with water or chemicals before, during and immediately after the operation to maintain entire surface wet.
31 Concrete production in open area is NOT allowed Concrete Production Carry out de-bagging, batching and mixing of cement and PFA in area sheltered on the top and the 3 sides.
32 Site Clearance Wet the working area before, during and immediately after the operation. Cover all demolished items or place in area sheltered on the top and the 3 sides within a day of demolition. Dusty material should be covered or removed
33 Blasting Wet area within 30 m before blasting. No blasting during the strong wind signal or tropical cyclone warning No.3 or above is hoisted unless permitted by Commissioner of Mines.
34 Part I of Schedule Control Requirements for Notifiable Works
35 Reclamation Treat or seal any stockpile of dusty materials (>1.2 m high & <50 m from site boundary) with bitumen or other suitable surface stabilizer.
36 Demolition of a Building Wet the working area prior to, during and immediately after demolition. Enclose the building with impervious dust screens to a height of at least 1 m higher. Wet remaining dusty materials after removal and clear the road surface. Wet the working area Enclose the building under demolition
37 Construction of the Superstructure of Building Provide effective dust screen where a scaffolding is erected. Enclose the skip hoist.
38 Part II of Schedule Control Requirements for Regulatory Works
39 Renovation on Outer Surface of External Wall or Roof Provide dust screen where there is scaffolding. Enclose the skip hoist. Wet remaining dusty materials after removal and clear the road surface. Screen effectively reduce dust nuisance
40 Road Opening Resurfacing Work Cover dusty material. Spray, remove / backfill / reinstate dusty materials within 24 hours. Dusty materials shall not be extended beyond pedestrian barriers, fencing or traffic cones. Any remaining dusty materials after removal shall be wetted and cleared from road surface. Remaining dusty materials should be wetted and cleared
41 Exemption Road construction work exempt from hoarding requirement. Road opening or resurfacing work exempt from vehicle washing facilities and hoarding requirements. Slope stabilization exempt from vehicle washing facilities requirement, and exempt from hoarding requirement if the site boundary adjoins road for vehicular traffic.
42 Where there is a threat to human life or building safety. Immediate repair of utility services, road collapse or road blockage due to accidents. Exemption for Emergency Work
44 Include the plan and budget of implementation of dust control measures in the tender. Arrange delivery of dust suppression materials and equipment to site at an early stage. Ensure good communication between frontline workers and management staff. Promote staff awareness on dust control measures. Supervise frontline workers. Tips to Reduce Dust Emission