INITIAL ELECTRICAL ASSESSMENT REPORT (EAR)

Transcription

1 INITIAL ELECTRICAL ASSESSMENT REPORT (EAR) Address: Plot & 70-73, Sector 02, KEPZ Karnafully, North Patenga, Chittagong Chittagong Chittagong Bangladesh The Alliance for Bangladesh Worker Safety Page 1/23

2 Introduction to the Report The following report contains a site profile and summary of non-conformities identified during an onsite assessment commissioned by the Alliance for Bangladesh Worker Safety (Alliance) and conducted by a third-party Qualified Assessment Firm (QAF). The assessment was conducted against the Alliance for Bangladesh Worker Safety Assessment Protocols (APs) and Fire Safety and Structural Integrity Standard, which is harmonized with the factory assessment guidelines developed by Bangladesh University of Engineering and Technology (BUET) for the Bangladesh National Tripartite Plan of Action (NTPA). The goal of the Alliance process is to provide clear and practical technical requirements by which Bangladeshi Ready Made Garment (RMG) Factories producing for Alliance members may be consistently and fairly evaluated for fire, structural, and electrical safety in a non-duplicative manner. Each assessment will prompt action plans that will be used by RMG factories to systematically and sustainably improve safety conditions for garment workers. Beyond tracking and reporting on action steps taken in a transparent manner, the Alliance organization and its members will seek to further support factory improvements through technical assistance, training, implementation support for functional Worker Committees, and in some cases financial assistance and wage support for workers if factories are closed for remediation. The contents of the report do not constitute a guarantee of compliance with the applicable laws, the Alliance Standard or the absolute or continued safety against fire, electrical and/or structural integrity issues that may lead to injury or loss of life. The report is designed to provide a non-exhaustive summary of risk issues, based on a limited sampling and duration of time onsite by the named QAF. Neither the QAF nor the Alliance can certify or guarantee the quality, outcome, or effectiveness of actions taken in response to the report. For more information and report feedback please go to: The Alliance for Bangladesh Worker Safety Page 2/23

3 GENERAL INFORMATION General Information Address: Country: Province: City: Plot & 70-73, Sector 02, KEPZ Karnafully, North Patenga, Chittagong Chittagong Chittagong Bangladesh Bangladesh Chittagong Chittagong Zip Code: 4204 Audit Duration: Re-Audit: 1 Days Re-Audit After 0 Months Draft Report Date : 06/25/2014 Final Report Date : 07/06/2014 Are all action items from previous assessment complete? : Buildings in Complex : Is the building(s) owned or rented by the?: Number of Building Levels (Stories) : Approximate Building Area (SF) : Date of Building Construction : Date of Last Building Renovation/Addition : N/A There are eight buildings in the factory premises out of which one is main production building and seven are ancillary buildings. The buildings are named as: 1. Two story prefab main production shed, 2. Three story prefab office shed, 3. Two story utility building, 4. Single story boiler building, 5. Single story RCC security building-1, 6. Single story RCC security building-2, 7. Single story oil tank store building, 8. Single story child care building. Owned There are eight buildings in the factory premises out of which one is main production building and seven are ancillary buildings. The buildings are named as: 1. Two story prefab main production shed, 2. Three story prefab office shed, 3. Two story prefab utility shed, 4. Single story boiler building, 5. Single story RCC security building-1, 6. Single story RCC security building-2, 7. Single story oil tank store building, 8. Single story child care building July, June,2013 No renovation The Alliance for Bangladesh Worker Safety Page 3/23

4 Ancillary Structures in Complex : Approximate Ancillary Structures Area (SF) : Number of Occupants : 1457 Provide brief description of the electrical system for each building.: Physical location of Substation? : What equipment/loads does the UPS serve? : External Power Source feed from Bangladesh Export Processing Zones Authority(BEPZA). Dry Type Transformer(1000 KVA): 01 No; Diesel Generator(825 KVA): 01 No; Low Tension(LT)Panel: 02 Nos; Main Distribution Board(MDB): 11 Nos; Sub Distribution Board (SDB) : 15 Nos; Power Factor Improvement(PFI) Panel :01 No; Auto Change Over Switch(ACOS):01 No Beside the generator room. UPS used for fire alarms and computer back up. The Alliance for Bangladesh Worker Safety Page 4/23

5 ASSESSMENT FINDINGS Electrical System Information Are as-built electrical drawings indicating information such as panel and circuit locations throughout the building(s) available for review? Alliance Standard Part 10 Section Electrical System Maintenance Have workers that operate and maintain the electrical system received electrical safety training? Is training documentation on site? Workers that operate and maintain the electrical system have not received electrical safety training. Worker Interviews: No electrical safety training. Develop and implement an electrical safety program. Include key topics such as lock out tag out procedures, personal protective equipment requirements, etc. Reference NFPA 70e for example program requirements. Reference NFPA 70e for example Have items identified in previous thermographic inspection reports been addressed? The Alliance for Bangladesh Worker Safety Page 5/23

6 Items identified in previous thermographic inspection reports have not been addressed. Worker Interviews: No thermographic items have been addressed Complete action items identified from previous thermographic inspection report. Not Applicable Are periodic safety inspections of the electrical system components completed and documented? No periodic safety inspections of the electrical system components is completed. Document Review: No periodic safety inspections of the electrical system. Establish a periodic inspection program to ensure the electrical systems are free from damage, debris, dirt, lint, etc. Maintain records concerning inspections and follow up actions. Alliance Standard Part 10 Section Inspection and Testing and Part 13 Section 13.6 Housekeeping Electrical System Conditions All equipment is efficiently earthed and properly connected to the required number of earth electrodes. There are four earth electrodes found in this factory which are not adequate for the whole system. Visual Assessment: Inadequate earthing system. Provide earthing of equipment at required locations and connect to required number of electrodes. Refer to the BNBC for required number of electrodes Alliance Standard Part 10 Section Inspection of Substation The Alliance for Bangladesh Worker Safety Page 6/23

7 Installations. Indications of overheating, overloading, or signs of burning were not observed. a) Burning sign observed at circuit breaker & cable. Location:MDB(01)(Main Shed,Ground Floor),SDB(08)(Main Shed,First Floor). b) Indication of overheating were observed at some locations during thermography. Location: 1. SDB(10)(Upper Side) (Main Shed, First Floor, HR Office Side. 2. SDB(08) (Main Shed, First Floor, Sewing Section) 3. SDB(07)(Main Shed, First Floor, Sewing Section) Note: Detail thermography report is uploaded here under General Information section,namely '' Photograph: Burning sign observed., Uploaded Document, Photograph: Burning sign observed., Uploaded Document Find out cause of overheating and take proper action considering replacement of cable or equipment where necessary. Alliance Standard Part 10 Section No multi looping of wiring/cables observed at circuit breakers within switchboards and/or distribution boards. 1.Multi looping of wiring observed at circuit breakers within distribution boards. Location: MDB (01) (Office Building, Ground Floor), MDB (02)Main Shed, Ground Floor), MDB(03)(Ground Floor, Sample Section), MDB (06) ( Pump Room), MDB(07)(Ground Floor, Sample Section), SDB (01) (Main Shed, Ground Floor), SDB (02)(Main Shed, Ground Floor), SDB (04)(Main Shed, First Floor), SDB (06)(Main Shed, First Floor), SDB (07)(Main Shed, First Floor), SDB (08)(Main Shed, First Floor), SDB (02)(Office Building, Second Floor), SDB (03)(Office Building, Second Floor) 2.Bunching of wiring observed at circuit breakers within distribution boards. Location: MDB (01) (Office Building, Ground Floor) Photograph: Multi looping of wiring at circuit breakers., Visual Assessment, Photograph: Multi looping of wiring at circuit breakers., Visual Assessment Remove multi looping and Bunching of cables at circuit breakers within distribution boards. Alliance Standard Part 10 Section 10.3 Electrical Wiring and Cabling The Alliance for Bangladesh Worker Safety Page 7/23

8 All metal in the building is connected to the building earthing/grounding system such as metal rebar in concrete, metal frame of building, or metal water pipe. All metal in the building is not connected to the building earthing system such as metal rebar in concrete, metal frame of building, or metal water pipe. Location: All over the building. Visual Assessment: Not all metal in the building is connected to the building earthing. Connect all metal in the building to the building earthing system such as metal rebar in concrete, metal frame of building, or metal water pipe. Alliance Standard Part 10 Section Earthing Light fixtures without protective covers are not installed in storage areas or in any area where the Inspector of the Factories Rules ( ) Part 53 disallows these fixtures. Light fixtures without protective covers are installed in Fuel (oil) tank Storage room and Finished goods Area. Location: Ground Floor(Finished goods Area). Photograph: Light fixtures without protective covers. Ensure light fixtures without protective covers are not installed in storage areas or in any area where the Inspector of the Factories Rules ( ) Part 53 disallows these fixtures. Alliance Standards Part 10 Section Naked Lights Wiring systems are selected and erected so that no damage is caused by the ingress of water. Water is dropping on the panel. Location: Generator room, Boiler room and all floors of the shed. Photograph: Damage due to ingress of water. The Alliance for Bangladesh Worker Safety Page 8/23

9 Ensure wiring systems are selected and erected so that no damage is caused by the ingress of water. Alliance Standards Part 10 Section Presence of Water The substation room has the required fire rating/protection and is physically separated from the remainder of the building. Substation room is not fire rating but 12 feet physically separated from the remainder of the building. Photograph: The substation room is not fire rated. Provide adequate fire rating for substation room and make it separated from rest of the building Alliance Standard Part 3 Section Do switchboards and/or distribution boards have a minimum clearance of 1 m (39 in) in front? Alliance Standards Part 10 Section 10.7 Main Switch, Switchboards and Metal Clad Switchgear Are all switchboards and/or distribution boards metal enclosed with a dead front construction? Distribution boards are metal enclosed without dead front construction. The Alliance for Bangladesh Worker Safety Page 9/23

10 Location:LT PANEL-01(Substation room),lt PANEL-02(Substation room),mdb (01)(Main Shed, Ground Floor), MDB(03)(Ground Floor, Sample Section), MDB (06) ( Pump Room), MDB(07)(Ground Floor, Sample Section), SDB (07)(Main Shed, First Floor), SDB (08)(Main Shed, First Floor), MDB (01) (Office Building, Ground Floor), SDB (03)(Office Building, Second Floor). Photograph: No dead front construction. Ensure distribution boards are metal enclosed with a dead front construction. Alliance Standards Part 10 Section 10.7 Main Switch, Switchboards and Metal Clad Switchgear No circuits are drawn for loads without the incorporation of a overcurrent protection device (circuit breaker). Few of circuit breaker rating found unknown./ Need to use circuit breaker for fire pump. Alliance Standards Part 10 Section 10.9 Protection of Circuits Is electrical wiring/cables sized according to capacity of circuit breakers (No higher rated circuit breakers with lower rated wiring)? Electrical cables are not sized according to capacity of circuit breakers. Location: MDB (01) (Office Building, Ground Floor) 2.5 rm BYA cable connected to 125 TP MCCB. Photograph: er rated circuit breakers with lower rated wiring. Consult with a qualified Electrical Engineer and ensure electrical wiring/cables are sized according to capacity of circuit breakers. The Alliance for Bangladesh Worker Safety Page 10/23

11 Alliance Standard Part 10 Section Electrical Connections. Shielding or additional insulation is provided for wiring exposed to external heat sources. Additional insulation required where cable channel attached heat source. Alliance Standards Part 10 Section External heat sources. The substation room has adequate illumination levels. There is no lighting fixture in the substation room. Location: Substation room. Photograph: No light in substation room. Provide light fixtures to increase illumination levels provided in the BNBC. Alliance Standard Part 10 Section Inspection of Substation Installations. Do switchboards and/or distribution boards have clear identification markings? Distribution boards have no clear identification markings. Location: All distribution boards. Photograph: No clear identification markings. Ensure clear and permanent identification marks are painted in all distribution boards, switchboards, sub main boards and switches. The Alliance for Bangladesh Worker Safety Page 11/23

12 Alliance Standard Part 10 Section 10.7 BNBC Part 8 Section Do switchboards and/or distribution boards have capacity information labels? Distribution boards have no capacity information labels. Location: All distribution boards Photograph: No distribution board capacity information labels. Provide capacity information labels (Maximum current rating, no of circuit breakers etc.) for distribution boards. Alliance Standard Part 10 Section 10.7 Main Switch, Switchboards And Metal Clad Switchgear and Inspection of the Installation Are switchboards and/or distribution boards provided with physical means to prevent the installation of more over current devices than that number for which the panel board was designed, rated, and listed. As there is no capacity information available on distribution panel boards, so physical means to prevent the installation of more over current devices is not considerable right now. When available the electrical concern should consider the given suggestive plan of action. Location: All distribution boards. Visual Assessment: No capacity information available on distribution panel boards. Ensure switchboards and/or distribution boards provided with physical means to prevent the installation of more over current devices than that number for which the panel board was designed, rated, and listed. Alliance Standards Part 10 Section 10.7 Main Switch, Switchboards and Metal Clad Switchgear Are electrical wiring/cables properly identified? Electrical cables are not properly identified. Location: All distribution boards. The Alliance for Bangladesh Worker Safety Page 12/23

13 Photograph: Electrical cables are not identified. Ensure the means of identification is obtained by separate color coding, marking tape, tagging, or other approved means. Bangladesh Electricity Rules 1937 Rule 51 and 56 Transformers are properly grounded (earthed). One transfromer frame earthing found. Alliance Standards Part 10 Section 10.5 Substation Are all internal components of switchboards and/or distribution boards properly concealed (No missing circuit breaker or knockout covers)? Internal components of distribution boards are not properly concealed. Location:LT PANEL-01(Substation room), LT PANEL-01(Substation room), MDB (01)(Main Shed, Ground Floor), MDB (02)Main Shed, Ground Floor), MDB(03)(Ground Floor, Sample Section), MDB (06) ( Pump Room), MDB(07) (Ground Floor, Sample Section), SDB (01) (Main Shed, Ground Floor), SDB (02)(Main Shed, Ground Floor), MDB (04)(Main Shed, First Floor), SDB (08) (Main Shed, First Floor), SDB (09)(Main Shed, First Floor), SDB (11)(Main Shed, First Floor), SDB (03)(Office Building, Second Floor) Photograph: Internal components are not properly concealed. Provide covers or blanks to conceal all live internal components of switchboards and/or distribution boards. Alliance Standard Part 10 Section Sub-Distribution Boards The Alliance for Bangladesh Worker Safety Page 13/23

14 Electrical wiring and conduit is properly supported. Electrical wiring and conduit is not properly supported. Overhead Line Mounted pole(beside Substation Room), Ground Floor(Top of the CAD Office), 1st Floor(Sewing section,beside office area), 1st Floor(Finishing Section), 1st Floor(Top of the Doctor Room), 1st Floor(Top of time keeper office), Sample Section(Ground Floor). Photograph: Inadequate cable support. Provide adequate supports for electrical wiring and conduit. Alliance Standard Part 10 Section , , and Cable joints are through porcelain/pvc connectors with PIB tape wound around joint. Improper cable joints were found. Location:MDB (01)(Main Shed, Ground Floor), MDB (02)Main Shed, Ground Floor), MDB(03)(Ground Floor, Sample Section), MDB(07)(Ground Floor, Sample Section), SDB (01) (Main Shed, Ground Floor), SDB (02)(Main Shed, Ground Floor), SDB (04)(Main Shed, First Floor), SDB (06)(Main Shed, First Floor), SDB (08)(Main Shed, First Floor). Photograph: Improper cable joint. Ensure cable joints through porcelain/pvc connectors with PIB tape wound around joint. Alliance Standards Part 10 Section Cable Joints Lighting fixtures are supported from the structure and seismic bracing is installed as required. The Alliance for Bangladesh Worker Safety Page 14/23

15 Alliance Standards Part 10 Section Lighting Fittings Is all electrical wiring/cable properly terminated at its point of termination (No un-terminated wires, lugs are provided at terminals, etc)? Electrical cable is not properly terminated. Location: SDB (04)(Main Shed, First Floor), SDB (06)(Main Shed, First Floor),Ground Floor(Beside The Sample Section), Ground Floor(Cutting section), Ground Floor(Sample Section_Sewing Machine), 1st floor(cutting Section), 1st Floor(Beside Doctor room), 1st Floor(Sewing Section), 1st Floor(Top of the Elevator). Photograph: Un-terminated cables. Ensure all electrical cable properly terminated at its point of termination. Alliance Standards Part 10 Section Wiring of Sub-distribution Boards Are all switchboards and/or distribution boards properly grounded (earthed)? Distribution boards are not properly grounded. Incoming earth wire is connected to the panel body withput any bus bar and door is not connected to earth wire. Location: SDB (07)(Main Shed, First Floor), SDB (03)(Office Building, Second Floor). Photograph: Inadequate grounding. Provide grounding (earthing) for Switchboards and/or distribution boards. Alliance Standard Part 10 Section Circuit and System Earthing The Alliance for Bangladesh Worker Safety Page 15/23

16 Are switchboards and/or distribution boards free of dust and debris? Distribution boards are not clean. Location: MDB (01)(Main Shed, Ground Floor), MDB (02)Main Shed, Ground Floor), MDB(03)(Ground Floor, Sample Section), MDB (06) ( Pump Room), MDB(07)(Ground Floor, Sample Section), SDB (01) (Main Shed, Ground Floor), Photograph: Distribution boards are not clean. Disconnect the panel from the electrical service and clean interior components of all dust and debris. Seal all openings within the enclosure to prevent dust and debris from entering. Alliance Standard Part 10 Section Enclosures Stranded conductors having a nominal cross-sectional area 6mm2 or greater are provided with cable sockets. Conductors below 6 mm2 without cable sockets, all strands at the exposed ends are soldered together or are crimped using suitable sleeve or ferrules. Cable sockets are not provided for stranded conductors. Location:SDB (01) (Main Shed, Ground Floor), MDB (01) (Office Building, Ground Floor), Photograph: No cable socket. Provide cable sockets for stranded conductors having a nominal crosssectional area 6mm2 or greater. Conductors below 6 mm2 without cable sockets, solder all strands at the exposed ends together or crimp using suitable sleeve or ferrules. Alliance Standards Part 10 Section Cable Ends Electrical connections at equipment, fixtures, etc are properly secured. Electrical connections at fixtures are not properly secured. Location: Ground Floor(Fabric Store), Ground Floor(Sample Section), Ground Floor(Compressor room). The Alliance for Bangladesh Worker Safety Page 16/23

17 Photograph: Electrical connections are not secured. Ensure electrical connections at equipment, fixtures, etc. are properly secured. Alliance Standards Part 10 Section Electrical Connections Are junction boxes and other electrical devices provided with covers? Need to re-arrange all consumer box/control panel. Alliance Standard Part 10 Section and Are there additional areas of non-compliance to report? Combustible material in the distribution board. Wooden strip is placed beside circuit breaker. Location: SDB(02)(Office building, Second floor) Photograph: Combustible material in the distribution board. Remove all combustible materials from from distribution boards. Not Applicable Required equipment and safety signage is posted within the room. Low Required equipment and safety signage is not posted within substation room. Location: Substation room. The Alliance for Bangladesh Worker Safety Page 17/23

18 Photograph: No required equipment and safety signage. Indoor electrical installations that are accessible to unqualified persons shall be made with metal-enclosed equipment. Switchgear, unit substations, transformers, pull boxes, connection boxes, and other similar associated equipment shall be marked with a Alliance Standard Part 10 Section , Section , and , NFPA 70 Chapter 1 Article , and Bangladesh Electricity Rules of 1937 Rule 46 Signage indicating the prohibition of light fixtures without protective covers is installed at required locations. Low No signage indicating the prohibition of light fixtures without protective covers is installed at required. Location: Ground Floor(Fabric Store), Ground Floor(Trim and Accessories room). Photograph: No signage indicating. Light fixtures without protective covers (otherwise known as naked lights) shall not be allowed in storage areas or in any area where the Inspector of the Factories Rules disallows these fixtures. Install signs posted in Bengali and English, indicating th Alliance Standards Part 10 Section Naked Lights Are electrical insulation mats provided in front of substation, switchboards and/or distribution boards? Low Electrical insulation mats are not provided in front of distribution boards. Location: SDB (01) (Main Shed, Ground Floor), MDB (01) (Office Building, Ground Floor), MDB (01)(Office Building, First Floor), SDB (02)(Office Building, Second Floor), SDB (03)(Office Building, Second Floor). Photograph: No mats provided in front of distribution boards. Provide electrical insulation mats in front of distribution boards. The Alliance for Bangladesh Worker Safety Page 18/23

19 Alliance Standard Part 10 Section Inspection of the Installation. Are meters and other electrical devices (Ammeter, Voltmeter, PFI Auto Controller, etc) installed on the main electrical equipment operational? Low Need to install ammeter/voltmeter where required. Alliance Standard Inspection of the Installation Phase separators are provided between terminals on circuit breakers. Low Phase separators are not provided between terminals on circuit breakers. Location: LT PANEL-01(Substation room),lt PANEL-02(Substation room),mdb(07)(ground Floor, Sample Section), MDB (04)(Main Shed, First Floor), MDB (01) (Office Building, Ground Floor), SDB (03)(Office Building, Second Floor). Photograph: No phase separators. Install phase separators between terminal connections. Verify phase separators are installed at all remaining locations. Alliance Standard Part 10 Section Electrical Connections Emergency Power System Is the generator room clean and free of dirt, debris, and improperly stored materials? Generator room is not clean. Location: Generator Room. Photograph: Generator room is not clean. The Alliance for Bangladesh Worker Safety Page 19/23

20 Ensure the generator room clean and free of dirt, debris. Alliance Standards Part 10 Section Generator Room Is the generator room properly ventilated Although the heat generated from radiator is discharged safely but no other exhaust available. Photograph: Generator room is not properly ventilated. Consult a qualified electrical engineer to determine the required ventilation rates and reconfigure exhaust fans per recommendations of the qualified electrical engineer. Alliance Standards Part 10 Section Generator Room Fuel storage tanks located within the building have a maximum combined capacity of 2500L (660 gal) or less. Fuel storage tanks located within the building have more than 2500 Liter and there is no permission from the department of explosive. Location: Ground Floor_Fuel tank Storage room. Photograph: The capacity of the Fuel storage tank is more than 2500 liter. Ensure fuel storage tanks located within the building have a maximum combined capacity of 2500 Liter or take permission from the department of explosive for storage required amount of fuel. Alliance Standards Part 3 Section Generators Are emergency power switchboards, distribution boards, and circuits properly identified? The Alliance for Bangladesh Worker Safety Page 20/23

21 Emergency power switchboards, distribution boards, and circuits are not properly identified. Visual Assessment: No identification of emergency Distribution Boards. All boxes and enclosures (including transfer switches, generators, and power panels) for emergency circuits shall be permanently marked so they will be readily identified as a component of an emergency circuit or system. The required marking can be by col NFPA 70 Chapter 7 Article Wiring, Emergency System Is the generator room properly rated and physically separated from the remainder of the building? The generator room is not properly rated but physically separated and 12 ft away from the remainder of the building. Photograph: Generator room is not rated. Ensure the generator room properly rated and physically separated from the remainder of the building. Alliance Standards Part 10 Section Generator Room Is the generator frame earthing (grounding) provided at two separate points? Generator frame earthing provided at only one point. Photograph: Inadequate generator frame earthing. Provide two separate points earthing (grounding) provided for generator. Alliance Standard Are inspection, maintenance, and testing procedures of the emergency generator being completed and documented? The Alliance for Bangladesh Worker Safety Page 21/23

22 Low Inspection and maintenance procedures of the emergency generator are not being completed. Document Review: Inspection and maintenance and testing procedures of the emergency generator are not completed. Establish a routine maintenance and testing program for the emergency generator. The program shall be based on all of the following: (1) Manufacturer's recommendations (2) Manufacturer's Instruction manuals NFPA 110 Chapter 8 Are inspection, maintenance, and testing procedures of the UPS being completed and documented? Low Inspection, maintenance, and testing procedures of the UPS are not completed. Document Review: No documentation on UPS testing and maintenance. Establish an inspection testing, and maintenance program for the Uninterruptable Power Supply (UPS) and associated components. The program must based on the following: (1) Manufacturer's recommendations (2) Manufacturer's instruction manuals Alliance Standard Part 13 Section NFPA 111 Chapter 8 NFPA 70B Chapter 28 Lightning Protection System Is a lightning protection system installed on the building? There is no lighting protection systems inatalled on both production shed and office building. Photograph: No lighting protection system. Have a qualified electrical engineer design a lightning protection system The Alliance for Bangladesh Worker Safety Page 22/23

23 according to the BNBC requirements. Have a licensed electrician install the designed system. Alliance Standards Part 10 Section Lightning Protection. Calculate Risk Index to determine if required. The lightning protection ground terminals are bonded to the building or structure grounding. Need to ensure external metal bonding with lightning protection system. Alliance Standards Part 10 Section Lightning Protection The Alliance for Bangladesh Worker Safety Page 23/23