Management Plan. Blast

Transcription

1 Management Plan Blast Doc ID No. Version No. Owner Next Review Date No.1 HSEF Manager 1 May 15 Management Plan Blast Risk Statement: High This document will be reviewed on a yearly basis, unless a process change occurs earlier than this period. The information in this document relates to management, monitoring and associated reporting required by Development Consent 11_0600 and Mining Leases 1247, 1367 and THIS DOCUMENT IS UNCONTROLLED WHEN PRINTED Page 1 of 15

2 Revision Summary First Issue Issue Date 0 Feb 03 L O Larsen Implementation Requirements Approved By Version No. Revision Date Clause No. Revision Details Approved By 1 May 14 Review and Updated by Bharath Ramakrishnappa changes made to comply with Project Approval 11_0600. Approval Position Automatic Notifications Hard Copy Locations Associated Documents to be reviewed THIS DOCUMENT IS UNCONTROLLED WHEN PRINTED Page 2 of 15

3 No.1 HSEF Manager 1 May 15 Document Hierarchy {Topic} Standard {Topic} Management Plan {Topic} Management Plan Procedure Procedure Procedure Procedure Procedure Procedure Form/Template/ Register Form/Template/ Register Form/Template/ Register Form/Template/ Register Form/Template/ Register Form/Template/ Register Training Material/Data Sheet Training Material/Data Sheet Training Material/Data Sheet Training Material/Data Sheet Training Material/Data Sheet Training Material/Data Sheet Work Instruction/ Guidance Note Work Instruction/ Guidance Note Work Instruction/ Guidance Note Work Instruction/ Guidance Note Work Instruction/ Guidance Note Work Instruction/ Guidance Note THIS DOCUMENT IS UNCONTROLLED WHEN PRINTED Page 3 of 15

4 No.1 HSEF Manager 1 May 15 Table of Contents 1. OVERVIEW Introduction Location SCOPE OBJECTIVES Regulatory Requirements RESPONSIBILITY Key issues Potential Impacts Potential Sources Blast Criteria Northparkes Mine Extension Project, Project Approval 11_ Non-compliance and Exemptions Control Measures Operational Identifying Hazards Risk Assessments Monitoring Blast Noise Monitoring Reporting Community Liaison Review / Continuous Improvement RELATED DOCUMENTS List of Tables Table 1 NSW Development Consent Conditions Schedule Table 2 Blasting criteria... 7 Table 3 NPM responsibilities for Blast Management... 9 Table 4 Blasting criteria...10 Table 5 Blast Monitoring Locations...13 List of Figures Figure 1 Northparkes Mine Location... 6 THIS DOCUMENT IS UNCONTROLLED WHEN PRINTED Page 4 of 15

5 1. OVERVIEW 1.1 Introduction Northparkes Mines (NPM) is a copper and gold mine located 27 kilometres North West of Parkes in the Central West of New South Wales, Australia. Northparkes is a joint venture between China Molybdenum Co., Ltd (CMOC) (80%) and the Sumitomo Groups (20%). NPM has been operating since 1993 following the grant of the original development consent (504/90) by the NSW Land and Environment Court. Since that time, seven additional development consents, inclusive of modification notices have been issued and have been surrendered to Parkes Shire Council. Combined, these approvals permitted the development and operation of two open cut mines, two underground block cave mines, construction of an additional Tailings Storage Facility and storage warehouse, a mine and mill upgrade to increase production to 8.5 million tonnes per annum and associated works. NPM was granted project approval (Northparkes Mine Extension Project 11_0600) under Section 75J of the Environmental Planning and Assessment (EP&A) Act 1979 in May 2014 in accordance with the supporting document Environmental Assessment Northparkes Mines Step Change Project (2013). This approval permits the ongoing operation of existing activities and the continuation of underground block cave mining in two existing ore bodies, the development of underground block cave mining in the E22 resource, additional campaign open cut mining located in existing mining leases, augmentation to approved Tailings Storage Facilities (TSFs) and an extended mine life of seven years until 2032 at the approved ore processing rate of up to 8.5 Mtpa. 1.2 Location Northparkes Mines is located 27 kilometres North West of Parkes in the Central West of New South Wales, Australia, located on the edge of the inland slopes west of the Great Dividing Range. The NPM site is generally flat, with some low undulations, ranging in elevation from 288 metres Australian Height Datum (mahd) to 301 mahd. The area surrounding the NPM site is also generally flat with the most significant regional feature being Goonumbla Hill, which extends to a height of 386 mahd, located approximately 4 kilometres south of the Project Area. THIS DOCUMENT IS UNCONTROLLED WHEN PRINTED Page 5 of 15

6 Doc ID No. Version No. Owner No.1 HSEF Manager Next Review Date 1 May 15 Figure 1 Northparkes Mine Location THIS DOCUMENT IS UNCONTROLLED WHEN PRINTED Page 6 of 15

7 2. SCOPE This Management Plan applies to all activities undertaken by Northparkes Mines including mining and exploration activities; processing of copper / gold ore resources; project development; maintenance activities; mine closure; logistics; associated service and support function. 3. OBJECTIVES The objectives of the Blast Management Plan (NMP) are: ensure that vibration impacts from operations is minimised and appropriately controlled ensure that impacts on surrounding residents are minimised keep the local community and regulators informed of activities where required and respond quickly and effectively to issues or complaints protect the safety of people and livestock in the surrounding area protect public or private infrastructure/property in the surrounding area from any damage minimise the dust and fume emissions of any blasting 3.1 Regulatory Requirements The Blast Management Plan (NMP) addresses the relevant components of conditions 6 13 of the NSW Project Approval (PA11_0600) for the Northparkes Mines Step Change Project. These conditions are outlines in Table 1and Table 4 below. Table 1 NSW Development Consent Conditions Schedule 3 Condition Blasting Criteria 1. The Proponent shall ensure that blasting on site does not cause exceedances of criteria in Table below Table 2 Blasting criteria Location Airblast overpressure (db(lin Peak)) Ground vibration (mm/s) Allowable exceedance Related Section in BMP Section Residence on privately owned land % % of the total number of blasts over a period of 12 months All public infrastructure - 50 (or a limit determined by the structural design methodology in AS , or its latest version, or other alternative limit for public infrastructure, to the satisfaction of the Secretary) 0% Note: To interpret the land referred to in Table 1 see the applicable figures in Appendix 4. THIS DOCUMENT IS UNCONTROLLED WHEN PRINTED Page 7 of 15

8 No.1 HSEF Manager 1 May 15 However, these criteria do not apply if the Proponent has a written agreement with the relevant owner to exceed these criteria, and has advised Planning & Infrastructure in writing of the terms of this agreement Blasting Hours 2. The Proponent shall only carry out blasting on site between 9 am and 5 pm Monday to Saturday inclusive. No blasting is allowed on Sundays, public holidays, or at any other time without the written approval of the Secretary. Section Blasting Frequency 3. The Proponent shall only carry out 1 blast per day on site. This condition does not apply to blasts that generate ground vibration of 0.5 mm/s or less at any residence on privately-owned land, or blasts required to ensure the safety of the mine or its workers. Note: For the purposes of this condition, a blast refers to a single blast event, which may involve a number of individual blasts fired in quick succession in a discrete area of the mine. Property Inspections 4. If the Proponent receives a written request from the owner of any privately-owned land within 2 kilometres of any approved open cut mining pit on site for a property inspection to establish the baseline condition of any buildings and/or structures on his/her land, or to have a previous property inspection updated, then within 2 months of receiving this request the Proponent shall: a) commission a suitably qualified, experienced and independent person, whose appointment is acceptable to both parties to: establish the baseline condition of any buildings and other structures on the land, or update the previous property inspection report identify measures that should be implemented to minimise the potential blasting impacts of the project on these buildings and/or structures b) give the landowner a copy of the new or updated property inspection report If there is a dispute over the selection of the suitably qualified, experienced and independent person, or the Proponent or the landowner disagrees with the findings of the property inspection report, either party may refer the matter to the Secretary for resolution. Property Investigations Section 6 Section 6 & Section 7 5. If the owner of any privately-owned land claims that buildings and/or structures on his/her land have been damaged as a result of blasting on the site, then within 2 months of receiving this claim the Proponent shall: a) commission a suitably qualified, experienced and independent person, whose appointment is acceptable to both parties to investigate the claim b) give the landowner a copy of the property investigation report If this independent property investigation confirms the landowner s claim, and both parties agree with these findings, then the Proponent shall repair the damage to the satisfaction of the Secretary. If there is a dispute over the selection of the suitably qualified, experienced and independent person, or the Proponent or the landowner disagrees with the findings of the independent property investigation, then either party may refer the matter to the Secretary for resolution. 6. The Proponent shall: a) implement best management practice to: Operating Conditions protect the safety of people and livestock in the surrounding area; protect public or private infrastructure/property in the surrounding area from any damage minimise the dust and fume emissions of any blasting b) operate a suitable system to enable the public to get up-to-date information on the proposed blasting schedule on site, To the satisfaction of the Secretary. THIS DOCUMENT IS UNCONTROLLED WHEN PRINTED Page 8 of 15

9 7. The Proponent shall not undertake blasting on site within 500 metres of: a) any public road; b) any land outside the site not owned by the Proponent, unless the Proponent has: demonstrated to the satisfaction of the Secretary that the blasting can be carried out closer to the infrastructure or land without compromising the safety of people or livestock or damaging the infrastructure and/or other buildings and structures; and updated the Blast Management Plan to include the specific measures that would be implemented while blasting is being carried out within 500 metres of the infrastructure or land; or a written agreement with the relevant infrastructure owner or landowner to allow blasting to be carried out closer to the infrastructure or land, and the Proponent has advised Planning & Infrastructure in writing of the terms of this agreement Blast Management Plan 8. The Proponent shall prepare and implement a Blast Management Plan for the project to the satisfaction of the Secretary. This plan must: a) be prepared in consultation with the EPA, and submitted to the Secretary for approval prior to conducting any blasting on site; b) describe the measures that would be implemented to ensure compliance with the blast criteria and operating conditions of this approval; c) propose and justify any alternative ground vibration limits for public infrastructure in the vicinity of the site (if relevant); and d) include a monitoring program for evaluating and reporting on compliance with the blasting criteria and operating conditions of this approval 4. RESPONSIBILITY Specific accountabilities in relation to management of blast at NPM are outlined in Table 1. Personnel carrying out work under this Management Plan must be familiar with and comply with it in full. General role responsibilities under this Procedure are outlined in HSE Accountabilities Procedure (3-3563). Personnel carrying out work under this Management Plan must be familiar with and comply with it in full. Table 3 NPM responsibilities for Blast Management All Personnel Role Manager Director Responsibility Be familiar with and comply with this Management Plan; Assess blast requirements; Ensure that a system exists throughout NPM that covers the Blast Management Plan, and that the system is subjected to regular review. HSEF Manager Superintendents / Contract Superintendents / Team Leaders Departmental Managers Environment & Farm Superintendent Environment Team Ensure that the system and this Management Plan are consistent with CMOC Standards, the site HSEQMS and meets the requirements of relevant legal obligations. Ensure relevant employees and contractors under their direction are trained and comply with this Management Plan Ensure relevant personnel and contractors within their responsibility are aware of and comply with this Management Plan. Monitor the implementation and use of this standard in their department and implement corrective action for any deviations found. Report against performance criteria in the Annual Environmental Management Report (AEMR). Report complaints and outcomes of investigations in the AEMR. Manage activities on site in accordance with this management plan. Maintain and co-ordinate reporting for the monitoring program. Provide advice on effective and efficient blast management controls. Communicate blast noise monitoring results at relevant community forums. THIS DOCUMENT IS UNCONTROLLED WHEN PRINTED Page 9 of 15

10 5. KEY ISSUES 5.1 Potential Impacts Monitoring conducted to date has established that underground blasts of the magnitude intended would be unlikely to be detected at any of the four surrounding residences. A review of blast monitoring records revealed that ongoing open cut operations should not cause any adverse blasting-related impacts. 5.2 Potential Sources The potential sources of blast impacts generated by activities include: surface blasting underground blasting 5.3 Blast Criteria Northparkes Mine Extension Project, Project Approval 11_0600 As per Schedule 3, condition 6 of Northparkes Mine Extension Project, Project Approval 11_0600, NPM shall ensure that the blasting does not cause exceedances of the criteria in Table 4 at any residence on privately-owned land. Table 4 Blasting criteria Location Airblast Overpressure (db(lin Peak)) Ground Vibration (mm/s) Allowable Exceedance Residence on privately owned land % % of the total number of blasts over a period of 12 months All public infrastructure - 50 (or a limit determined by the structural design methodology in AS , or its latest version, or other alternative limit for public infrastructure, to the satisfaction of the Secretary) However, these criteria do not apply if NPM have an agreement with the relevant owner/s of the residences to exceed these criteria, and has advised the Department of Planning and Infrastructure in writing of the terms of the agreement. Blasting Hours As per Schedule 3, condition 7 of Northparkes Mine Extension Project, Project Approval 11_0600, NPM shall only carry out blasting on site between 9 am and 5 pm Monday to Saturday inclusive. No blasting is allowed on Sundays, public holidays, or at any other time without the written approval of the Secretary. Blasting Frequency As per Schedule 3, condition 8 of Northparkes Mine Extension Project, Project Approval 11_0600, NPM shall only carry out 1 blast per day on site, six days per week. This condition does not apply to blasts that generate ground vibration of 0.5 mm/s or less at any residence on privately-owned land, or blasts required to ensure the safety of the mine or its workers. For the purposes of this condition, a blast refers to a single blast event, which may involve a number of individual blasts fired in quick succession in a discrete area of the mine. THIS DOCUMENT IS UNCONTROLLED WHEN PRINTED Page 10 of 15

11 Property Inspections As per Schedule 3, condition 9 of Northparkes Mine Extension Project, Project Approval 11_0600, if the NPM receives a written request from the owner of any privately-owned land within 2 kilometres of any approved open cut mining pit on site for a property inspection to establish the baseline condition of any buildings and/or structures on his/her land, or to have a previous property inspection updated, then within 2 months of receiving this request NPM will: commission a suitably qualified, experienced and independent person, whose appointment is acceptable to both parties to: o o establish the baseline condition of any buildings and other structures on the land, or update the previous property inspection report identify measures that should be implemented to minimise the potential blasting impacts of the project on these buildings and/or structures Give the landowner a copy of the new or updated property inspection report. If there is a dispute over the selection of the suitably qualified, experienced and independent person, or NPM or the landowner disagrees with the findings of the property inspection report, either party may refer the matter to the Secretary for resolution Property Investigations As per Schedule 3, condition 8 of Northparkes Mine Extension Project, Project Approval 11_0600 if the owner of any privately-owned land claims that buildings and/or structures on his/her land have been damaged as a result of blasting on the site, then within 2 months of receiving this claim NPM will: commission a suitably qualified, experienced and independent person, whose appointment is acceptable to both parties to investigate the claim give the landowner a copy of the property investigation report If this independent property investigation confirms the landowner s claim, and both parties agree with these findings, then NPM will repair the damage to the satisfaction of the Secretary. If there is a dispute over the selection of the suitably qualified, experienced and independent person, or NPM or the landowner disagrees with the findings of the independent property investigation, then either party may refer the matter to the Secretary for resolution. 5.4 Non-compliance and Exemptions If there is an exceedance of the blast criteria as set out in Northparkes Mine Extension Project, Project Approval 11_0600 and shown in Table 4 then NPM will notify the Secretary of the incident as soon as practicable after the incident. Within 7 days of the date of the incident, NPM is to provide the Secretary with a detailed report on the incident as per Northparkes Mine Extension Project, Project Approval 11_0600 Schedule 6 Condition 7 THIS DOCUMENT IS UNCONTROLLED WHEN PRINTED Page 11 of 15

12 6. CONTROL MEASURES Control measures for the management of blast during construction, operation and decommissioning are essential in minimising blast related impacts. 6.1 Operational Operational control measures include: NPM has a private agreement in place with the owners of Avondale for the property to remain unoccupied over mine life major works scheduled undergo a risk assessment prior to commencing work environmental inductions and training to ensure workforce awareness regular contact with local residents to enable the public to get up-to-date information on the proposed blasting schedule on site blasting will not be conducted on site within 500 metres of: o o any public road any land outside the site not owned by NPM blasting will only be conducted on site within 500 metres of the above if NPM has: o o o 6.2 Identifying Hazards demonstrated to the satisfaction of the Secretary that the blasting can be carried out closer to the infrastructure or land without compromising the safety of people or livestock or damaging the infrastructure and/or other buildings and structures updated this Blast Management Plan to include the specific measures that would be implemented while blasting is being carried out within 500 metres of the infrastructure or land a written agreement with the relevant infrastructure owner or landowner to allow blasting to be carried out closer to the infrastructure or land, and the Proponent has advised the Department in writing of the terms of this agreement NPM will monitor blasts as mining progresses in accordance with the blast monitoring programs, during campaign open cut mining operations. Monitoring will be undertaken to determine compliance with relevant criteria. Blast designs will be optimised when more detailed site planning is available. By adopting this approach, in conjunction with the adoption of improved blasting products and methods, as they are introduced, it is anticipated that blast emissions criteria can be met without imposing any significant constraints on blast designs throughout the operation of the mine. NPM own and manage large areas within and surrounding the site. This includes all areas of land within the vicinity of proposed blasting practices, which is managed for agricultural uses, primarily cropping. As such there is no risk of blast impacts to livestock. NPM will consult with landholders prior to campaign blasting activities to minimise potential blast impacts to residents, agricultural improvements and public infrastructure. 6.3 Risk Assessments Multiple surface blasting techniques will be utilised at NPM during the development and mining of open pits. Risk assessments for various blasting techniques will be undertaken before works commence. THIS DOCUMENT IS UNCONTROLLED WHEN PRINTED Page 12 of 15

13 No.1 HSEF Mnanger 1 May MONITORING The blast monitoring program is implemented using blast units which measure ground vibration and air overpressure at the residences on the four closest privately-owned lands. The program is designed to measure the effectiveness of control measures and ensure compliance with consent and licence conditions, relevant standards and corporate requirements. All over pressure and vibration monitoring instrumentation employed shall be designed to comply with the requirements of AS and carry current NATA (or similar) or manufacturer calibration certificates. All instrumentation should be programmed to record continuously overpressure (dbl) and vibration (mm/s) over the period of the blast. Monitoring is undertaken in accordance with the following procedures: Measuring and Monitoring Procedure (DOCID ) Environmental Monitoring and Measuring Schedule (DOCID ) Work Instruction Blast and Vibration Monitoring (DOCID ) Environmental Data Collection SOP (DOCID ) Results of the monitoring program are communicated to relevant personnel and external stakeholders, where required. The monitoring results are used to: verify compliance with legal and other requirements review and verify impacts to the environment and alert personnel of the need to modify operations accordingly any proposed changes will be done in consultation with the Department of Planning Infrastructure in accordance with Northparkes Mine Extension Project, Project Approval 11_0600 an ongoing monitoring program provides a basis for compliance auditing and for the continuous improvement of blast objectives by identifying activities that have the potential to exceed blast standards The locations for blast monitoring are outlined in Table 5 below. Table 5 Blast Monitoring Locations Location Name Easting Northing Real Time 24/7 Attended Quarterly Monitoring Unattended Quarterly Hubberstone Y Y Y Lone Pine Y Y Y Milpose Y Y Y Hillview Y Y Y 7.1 Blast Noise Monitoring NPM will utilise mobile real-time noise monitoring with alarm / SMS capabilities at four locations as shown in Real time noise monitors to monitor and record the noise levels generated from the blasts. THIS DOCUMENT IS UNCONTROLLED WHEN PRINTED Page 13 of 15

14 8. REPORTING Blast monitoring results are reviewed by the Environment Advisor within 48 hours of collecting the data and a weekly results summary provided to the Environment Superintendent. In the case of an exceedance of criteria or a failure to monitor a blast, the incident should be reported as soon as practical to the Environment and Farm Superintendent. As a minimum, blast monitoring records to be kept should include the following: the size of the blast in terms of the number of blast holes and the quantity of explosives the method of initiation and the timing sequence to be used in the blast the date and time of the blast the location of the monitoring equipment Instrument trigger levels measurement equipment and operator details the location of the blast the location of any structures and/or persons who may be affected by the blast the measured ground vibration and airblast values including the peak particle velocity values and the peak airblast levels weather conditions, especially wind speed, cloud cover and direction and any other notable conditions such as rain any subjective information from the shotfirer and any persons who may be affected by the blast The results of the monitoring program and any complaints received are communicated to relevant personnel and externally through the Annual Environmental Management Report. In accordance with Condition 8 and Condition 11, Schedule 6 of the Northparkes Mine Extension Project, Project Approval 11_0600, a summary of monitoring results will be made publicly available at the mine and on the website and updated on a quarterly basis. In the event of an exceedance of the relevant blast impact assessment criteria, or a failure to monitor the blast, the incident reporting system is used for internal reporting. Incident reporting (including any exceedences and complaints) will be in accordance with Condition 7, Schedule 6 of Northparkes Mine Extension Project, Project Approval 11_0600, and the Procedure Incident Management (DOCID ). 8.1 Community Liaison NPM recognises that blast impacts generated by mining activities can impact on adjacent properties and communities. A community relations program (via the Neighbours Meetings and Community Consultative Committee) shall be maintained to ensure two-way communication on blast management. Prior to blasting activities, NPM will contact nearby residents to outline the nature and duration of works and to provide contact details should they have any queries. All blast related complaints will be registered, investigated and responded to promptly. THIS DOCUMENT IS UNCONTROLLED WHEN PRINTED Page 14 of 15

15 9. REVIEW / CONTINUOUS IMPROVEMENT The Blast Management Plan will be reviewed and updated annually or in the case of a significant operational change. The review will include an assessment of the effectiveness of control measures and performance against the Plan s objectives. The objectives of a review are: to maintain compliance with statutory requirements to identify opportunities for improvement in the management plan incorporate community considerations The NMP review will include: this Document Legislation, Approval, Licence changes community complaints and enquiries 10. RELATED DOCUMENTS Reference Title Document Number HSEQ MS Measuring and Monitoring Procedure DOCID HSEQ MS Environmental Monitoring and Measuring Schedule DOCID HSEQ MS Work Instruction Blast and Vibration Monitoring DOCID HSEQ MS Environmental Data Collection SOP DOCID HSEQ MS Annual Environmental Management Reports HSEQ MS Procedure Incident Management DOCID Approvals Northparkes Mines Project Approval 11_0600 Environmental Assessment Environmental Assessment Environmental Assessment Environmental Assessment Northparkes Mines Step Change Project (2013) Corkery, R.W. (2006) Environmental Assessment Northparkes Mines E48 Project Heggies Pty Ltd, Northparkes Mines E48 Project Noise and Blasting Assessment. THIS DOCUMENT IS UNCONTROLLED WHEN PRINTED Page 15 of 15