LPC Commercial Buildings Transportation LIGHTNING PROTECTION CONCEPTS Medical Facilities Mining. Oil & Gas CONSULTANCY Power Generation DESIGN INSTALLATIONS Sports & Education TRAINING Telecommunications Renewable Energy
WORLD CLASS LIGHTNING PROTECTION SOLUTIONS Through Engineering Know How Lightning Protection Concepts provides a full range of lightning protection solutions across all industry sectors. Protecting people is our number one priority and a topic which is embedded in the hearts of our two principles. The combination of the expertise of our two principles offers all of the planning, design, training, components and certifications that are required to successfully implement lightning protection solutions. The partnership between Trevor Manas and Alexis Barwise brings together exceptional expertise in lighting protection, surge protection and earth-termination system solutions., this collaboration offers our clients most comprehensive and up-to-date solutions and services using highly innovative design principles that comply with the relevant standards. Trevor Manas Alexis Barwise Director Director Trevor Manas, started his career as a lightning Alexis Barwise received his bachelor`s degree in protection specialist in 1994. His experience, insight Electrical and Electronic Engineering in 2007. He and in-depth knowledge as well as his ability to stay currently serves on various national and international abreast of the latest developments in the earthing and standard and technical committees such as IEC TC81 lightning protection industry has helped him to and SANS 10142. Alexis is a founding member and develop his reputation as a lightning protection currently Board Chairman of ELPA (Earthing and professional. Lightning Protection Association). His work in introducing new technologies such as In 2012, Alexis was appointed as Managing Director isolated lightning protection systems through of DEHN Africa and in 2017, he was appointed as insulated cabling into South Africa has been one of Area Director for DEHN & SOHNE+Co for the many significant milestones in Trevor`s career. Americas, Middle-East and Africa regions where he was exposed to different standards, design Over the past 20 years, Trevor has been the chief philosophies, and technologies. lightning protection designer for over 5000 projects worldwide. He has also written over 20 white papers Alexis has written several technical articles and on various aspects of earthing and lightning provided training courses in lightning and surge protection. protection in several countries around the world. Trevor served as National Director of ELPA (Earthing While working for Schneider Electric, a global and Lightning Protection Association) in 2017 and specialist in energy management. Alexis filled 2018 where he developed the accreditation courses numerous roles as an electrical engineer. for lightning protection installers, designers and Throughout his career, Alexis has gained an in-depth inspectors. knowledge as an electrical design engineer, systems engineer and lightning protection engineer across Trevor is also a member of the SABS TC 067/ SC06 several different industry sectors. lightning protection working group. LPC`s designs are project specific packages which include earthing and lightning protection design drawings (High level & 3D), mounting and assembly details, soil resistivity reports, risk assessments and bills of quantities. LPC Page 1
Engineered Designs 3D Designing of Lightning Protection Systems Planning complex objects and structures by means of a 3D program allows us to efficiently design air-termination systems while taking into consideration all parts of the structure. This way, the air-termination systems can be installed more effectively than if the 2D method AutoCAD is used. Due to the increasing requirements regarding the building architecture, 3D planning is a very good solution for visually representing lightning protection measures. Based on our 3D planning, customers get an idea of how to integrate the lightning protection measures into the building architecture. Another advantage is the clear visualisation of the protected volume of the air-termination systems. 2D drawings and 3D planning 3D planning ensures component-optimised design. No individual views and details of building outlines are drawn, but the building is virtually designed on the computer. In this process, a detailed 3D model is created. 2D drawings can also be generated from this 3D model. This procedure has numerous benefits: • All drawings always correspond to the latest version of the 3D model • Faults are minimised due to a 360 degree view of the protected volumes around the building • The installation company can improve coordination of the mounting process • Any number of 2D and 3D view drawings can be generated from the 3D model • In addition to the view drawings, any number of mounting details can be generated LPC Page 2
Engineered Designs 3D Designing of Lightning Protection Systems LPC Page 3
Risk Assessments Risk Assessments According to SANS / IEC 62305-2 Risk management for structures and buildings according to SANS/IEC 62305-2 In accordance with the LPS standards a lightning protection risk assessment must be performed on all structures under consideration. The risk assessment process is designed to evaluate the need for a LPS and thereafter determine the level of lightning protection required. The risk potential of structures is assessed in a risk analysis. The result of this analysis allows us to take measures which reduce the risk. The aim is to select economically reasonable protection measures which are adapted to the properties and utilisation of the building. A risk analysis defines the level of LPS and a complete protection concept including the necessary shielding measures against lightning electromagnetic impulses (LEMP). The risk assessment process reduces the existing risk to a tolerable risk. The tolerable risk is defined when selecting the risks. These tolerable risks are specified in the standard. Risks To Be Considered At the start of the risk analysis process, the focus is on the utilisation of the structure which allows us to calculate the risks which have to be considered for the object to be protected. There are four different categories which are distinguished in a risk analysis: • Risk R1: Loss of human life • Risk R2: Loss of service to the public • Risk R3: Loss of cultural heritage • Risk R4: Loss of economic value One or more risks can be relevant for the structure. The LPS designer decides which risks are to be considered. LPC designs an efficient state-of-the-art lightning protection concept based on this risk analysis LPC Page 4
Soil Resistivity Wenner Method of Sounding Survey Location Plan Supply A V C1 P1 P2 C2 a a a CURRENT LINES OF FLOW EQUIPOTENTIAL LINES Soil Resistivity Analysis Earth Termination Design Soil Resistivity Survey, Analysis and Earth Termination System Design Soil resistivity surveys provide valuable information in the design of the earth termination system. GPR Voltage Analysis The soil resistivity values prevailing on a site are utilised to determine the various layers of soil, corrosiveness and homogeneousness of the soil. The GPR (grid potential rise) and the step and touch voltages are calculated using the soil resistivity values. The method of determining the soil resistivity distribution of the earth on the site for the purpose of designing an earthing system is the four-electrode sounding method called the ‘Wenner’ method of sounding: • Carry out on-site soil resistivity surveys – Depending on the size of the site, various surveys are conducted to a sufficient depth to enable calculation of optimum rod lengths. All Step Voltage Analysis surveys are to be checked with traverse readings. • Analyse resistivity readings and calculate the following : - Resistivity in Ohms and Ohm/metres - Determine top soil depth – layered soil conditions - Appraise corrosiveness based upon soil resistivity & other site factors • Design earthing system based upon application, soil conditions (rock etc.), resistivity values and other external factors (corrosiveness etc.). • Calculate D.C. resistance of earthing system. • Analyse Grid Potential Rise and Step and Touch Potentials to ensure safety factors for the earthing system. LPC Page 5
Training LPC Training Program Delivers Certified LPS Designers & Installers The training program as offered by Lightning Protection Concepts is designed to enable designers and installers of lightning protection systems to become ELPA accredited practitioners. Training courses currently offered: - Lightning protection installers training workshop - Lightning protection designers training program - Surge protection installers training workshops - CPD accredited seminars The LPC lightning protection training programs are in strictest accordance with the latest codes of practice, follow the most up to date lightning protection methods and technologies, giving lightning protection designers and installers the ability to competently complete projects. Tubular air-termination rod dia. 22 / 16 / 10 mm (aluminium) Air-termination rod dia. 16 / 10 mm (aluminium) Locking screws M8 Air-termination rod dia. 40 mm (aluminium) Fixing element Adapter grey sheath Supporting braces Hexagon nut HVI long Conductor Locking screw 4 x M10 Clamp Connection point solid/stranded copper conductor Screw and nut M10 threaded pins (coated), tigh- tening torque of 5 Nm 30 mm DESIGNER 35 mm max. 10° head piece aligned in parallel aligned in parallel LPC Page 6
Site Assessments Inspections, Fault Finding, Problem Solutions and Maintenance Through many years of experience, our ability to solve problems and provide effective solutions in preventing lightning damage is unparalleled. Our on-site evaluations provide an essential service in the maintenance of LPS and the provision of problem solving solutions to prevent further damage to structures and their operational systems. The on-site assessments utilises various inspection and testing techniques to verify the compliance of LPS to the relevant standards. We use various tolls to achieve a total evaluation including the use of drone technology to inspect inaccessible areas of the roof structure. All assessments include detailed inspection reports, test reports, certificates (part of maintenance), recommendations and findings. Continuity Test - FLUKE 1621 Earthing Resistance Meter GEOHM C LPC Page 7
Installations Our Installation Network LPC has a vast network of ELPA accredited lightning protection installers located in all of the major centres in South Africa and in certain regions of Africa. LPC`s network of accredited installers has developed through years of working together with our installers on many projects and the development of a high level of understanding of the quality standards that LPC requires on all projects. The combination of LPC`s expertise and ELPA accredited installers ensures that all projects are correctly designed and implemented. As part of our execution policy, LPC actively manages all installations that are carried out by our network of accredited installers. LPC Page 8
Certification All LPC projects are ELPA certified by means of submitting an ELPA Lightning Protection Installation Safety Report. This means that all LPC lightning protection projects also carry the ELPA guarantee of compliance. LIGHTNING PROTECTION SYSTEM INSTALLATION SAFETY REPORT (as per SANS 10313:2012 Edition 3.2) PROJECT DETAILS Physical address: Province, Country: ELPA No. Postal Code Unit / Building No.: Issue Date Customer / Owner details: Company name: Expity Date GENERAL Protected space (details): Type of Certification: Acceptance Re-certification Type of Inspection: Visual Testing Additional 2 Lightning ground flash density (N G ) (Flashes/km /year): Accepted annual lightning flashes to structure (N D ): RISK ASSESSMENT Has a risk assessment been done for system? Yes No Is the risk assessment report attached? Yes No Calculated Risk Are the calculated Calculated Risk with User-specified acceptable risks (R T ) R x risks acceptable? Protection R x R 1 Loss of human life 1.00E-05 Yes No User-calculated R 2 Loss of services 1.00E-03 Yes No risks R X Tolerance on risk R T Loss of cultural heritage R 3 1.00E-04 Yes No R 4 Loss of economic value 1.00E-03 Yes No Lightning Protection System (LPS) level: LPL 1 LPL 2 LPL 3 LPL 4 Risk mitigation Lightning Equipotential Bonding (LEB) level: LPL 1 LPL 2 LPL 3 LPL 4 methods required Coordinated surge protection device (SPD) level: LPL 1 LPL 2 LPL 3 LPL 4 LIGHTNING PROTECTION SYSTEM (LPS) Has the LPS design been done in accordance with SANS 62305:2011 Yes No Is the LPS design drawing attached? Yes No Are all LPS components tested and certified in accordance with SANS Are the test certificates of these components 62561:2012 Yes No attached? Yes No AIR-TERMINATION SYSTEM (ATS) Thatched roof: Yes No Roof used as ATS: Yes No Hazardous location: Yes No External conductors installed: Yes No Type of roof/striucture: Type of ATS used: Metal roof: Yes No Free-standing masts: Yes No Other: Yes No Isolated ATS: Yes No Protective angle (ᶿ): Yes No Details: ATS size and or detail (mm ) 2 Rolling sphere radius (m): Yes No Details: Steel(St/tZn,StSt) ATS method used: Mesh method (grid): Yes No Details: ATS material used: Copper (Cu) Aluminium (Al) Hybrid (mix of methods) Yes No Details: Zinc (Zn) Other Overall Comments: DOWN CONDUCTOR SYSTEM (DCS) Natural conductive element used as DCS Yes No DCS size and or detail (mm ) 2 Reinforcement used as DCS: Yes No Spacing between down conductors (m): Type of DCS used: External DCS used: Yes No Number of down conductors in the system: Existing structure used as DCS: Yes No Accessible test joints/terminations: Yes No DCS material used: Steel (St/tZn, StSt) Copper (Cu) Aluminium (Al) Zinc (Zn) Other Overall Comments: NOTES: The following codes have been referenced in this report SANS 10142, SANS 10199, SANS 10313, SANS 60364, SANS 62305, SANS 62561 Page 1 of 2 LPC Page 9
LPC LIGHTNING PROTECTION CONCEPTS P.O. Box 3080 Northcliff 2115 Tel: 0833772844 E-mail: [email protected] E-mail: [email protected] Website: www.lpconcepts.com Download PDF
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