SOW_191N6525Q0120.pdf

SCOPE OF WORK

1. SITC OF UNINTERRUPTED POWER SUPPLY (UPS) SYSTEM

The scope of work for supply and installation, testing and commissioning of 100kW IGBT Rectifier and IGBT Invertor Modular Live Swappable UPS system scalable to 250kW within frame. Having battery backup of minimum 2-4 Hours complete with cabling between UPS and the battery according to the cable routing. Input/Output Cabling of the UPS with Copper flexible cables. Work shall include supply, installation, testing and commissioning of all related equipment together with all accessories and auxiliaries as per specifications.

The contractor will be responsible for laying of GI Conduits and pulling cables from the identified Power source to the UPS and Output of the UPS to identified Load side. All Conduiting and cabling work must be neatly completed by qualified professional electricians. All cables must be properly terminated in the switchgear using thimbles and crimped properly. No cable joints are permitted.

All cables selected must be copper flexible and rated to carry 125% of the full load current. Spare capacity must be considered in the conduit size selection also to leave space of future cable pulling. Cable pulling rope must be left in the conduits for future usage.

The system shall be fully operational and shall comply with the specified codes and standards.

The contractor shall be responsible for providing all materials, equipment and engineering services specified or which are required to fulfill the intent of ensuring reliability of the total work covered under these specifications within his quoted price.

Before submitting the bid contractor is advised to visit the site and understand the requirements, cable routes, feasibility of installing conduits, pulling cables and checking of supply side and load side switchgear compatibility required, new MCCB with Box must be installed on supply and load side to connect the UPS to Embassy’s electrical distribution system.

GENERAL REQUIREMENTS

The contractor shall submit an offer for UPS systems as indicated in the document. Contractor must be authorized channel partner of the OEM.

All components of the UPS equipment shall have Surge Withstand Capability (SWC) to meet the requirements of EMC Approval IEC 62040-2 Cat C3, Surge :IEC 61000-4-5 CE.CB Report ,Safety Standard IEC 62040-1,performance IEC 62040-3 and Environment ROHS, REACH, WEEE, Green Premium, PEP and must be Live

Swap Qualified by TUV Rhineland. ANSI C62.41-1980, ANSI C 37.90a and IEEE Standard 472-1974 having minimum 1 year warranty.

2. References

A. General: The publications listed below form a part of this Specification to the extent referenced. The publications are referred to in the text by the basic designation only. The edition/revision of the referenced publications shall be the latest date as of the date of the Contract Documents, unless otherwise specified.

B. International Organization for Standardization (ISO):

1. ISO 9001, "Quality Management Systems - Requirements"

2. ISO 14001, “Environmental Management Systems - Requirements

With Guidance for Use” C. International Electrical Commission (IEC):

1. IEC 62040-1: 2017, Edition 2.0, Uninterruptible Power Systems (UPS) - Part 1: General and safety requirements for UPS

2. IEC 62040-2: 2016, Edition 3.0, Uninterruptible Power Systems (UPS) - Part 2: Electromagnetic compatibility (EMC) requirements.

3. IEC 62040-3: 2021-03, Edition 3.0, Uninterruptible Power Systems (UPS) - Part 3: Method of specifying the performance and test requirements

3. Submittals

A. Proposal Submittals:

1. Itemized System bill of materials.

2. Product technical specifications or equipment brochures.

3. Product specifications.

4. System operation diagram.

5. Installation manual.

6. Drawings for requested optional accessories.

7. Compliance report showing 100% Compliance to the technical specifications.

8. OEM’s Authorized channel partner certificate.

9. Past performance certificate showing completion of similar work of similar or higher magnitude.

10. Project timeline mentioning time taken for supply, installation and commissioning.

B. Delivery /Installation /Commissioning Submittals:

1. Installation manual, which includes installation of all systems.

2. Operation manual, which includes start-up and operating instructions.

3. As built drawings/Shop Drawings.

4. Warranty certificate-Minimum 1 year for UPS and 5 years for batteries from the date of handover.

5. Conduct 2 hours of training for Embassy Employees.

Performance period : 120 working days (No Work on Saturday, Sunday and Mission Holidays). Official working hours 08:30 to 17:00. The supply of the UPS must be completed withing 10 weeks from the date of drawing and product approval.

4. Payment Milestones:

10%: Submission of project Schedule, Submission of Selected UPS’s technical Brochure and catalogue. Submission of technical details of Switchgear, Cables and conduits.

20%: Submission of shop drawings and SLD.

20%: Completion of Electrical Conduiting and cable pulling work along with installation of Switchgear, boxes

40%: Upon successful installation, testing and commissioning of the UPS.

10%: Training of embassy staff, Submission of As built drawings, mandatory spare list as recommended by manufacturer.

5. Quality assurance

A. Qualifications

1. Manufacturer experience: The manufacturer shall have a minimum of 20 years’ experience in the design, manufacturing, and testing of UPS systems.

2. ISO 9001 Certification: The manufacturer shall be ISO 9001 & 14001 certified. Certification assures that the vendor’s quality control & environmental measures have been certified by an accredited registrar and meet internationally recognized standards.

3. Installer Qualifications: Installer shall be a firm that shall have a minimum of five years of successful installation experience with projects utilizing solid state UPS similar in type and scope to that required for this Project.

B. Regulatory requirements Comply with applicable requirements of the laws, codes, ordinances, and regulations of Federal, State, and local authorities having jurisdiction. Obtain necessary approvals from such authorities.

1. Safety:

a. IEC 62040-1: 2017, Edition 2.0, Uninterruptible Power Systems (UPS) - Part 1: General and safety requirements for UPS.

b. EN IEC 62040-1: 2019 | A11:2021.

2. EMC/EMI/RFI:

a. IEC 62040-2: 2016, Edition 3.0, Uninterruptible Power Systems (UPS) - Part 2: Electromagnetic compatibility (EMC) requirements.

b. EN 62040-2:2018, Uninterruptible power systems (UPS) - Part 2: Electromagnetic compatibility (EMC) requirements

3. Performance: IEC 62040-3: 2021-03, Edition 3.0, Uninterruptible Power Systems (UPS) - Part 3: Method of specifying the performance and test requirements.

4. Transportation: IEC 60721-4-2 Level 2M2 C. Factory testing

Prior to shipment the manufacturer shall complete a documented test procedure to test functions of the UPS module, when supplied by the UPS manufacturer, and warrant compliance with this Section.

D. Pre-installation conference Conduct pre-installation conference prior to commencing the installation, meet at the Project site to review the material selections, installation procedures, and coordination with other trades. Pre-installation conference shall include, but shall not be limited to, the Contractor, the Installer, and any trade that requires coordination with the work. The date and time of the pre-installation conference shall be acceptable to COR of the project.

E. Source responsibility Materials and parts comprising the UPS shall be new, of current manufacture, and shall not have been in prior service, except as required during factory testing. Active electronic devices shall be a solid state and shall not exceed the manufacturer’s recommended tolerances for temperature or current to ensure maximum reliability.

Semiconductor devices shall be sealed. Relays shall be provided with dust covers. The manufacturer shall conduct inspections on incoming parts, modular assemblies, and final products.

F. Accessories: Electrical Cables: Lapp Cable/Havells/ Polycab or equivalent Switchgears: Schneider/ABB/Siemens or Equivalent.

GI Conduits: AKG or Equivalent Thimble and Lugs : Dowels or Equivalent.

6. Delivery, storage, and handling

6.1 Deliver materials to the Project site in supplier’s or

manufacturer’s original wrappings and containers, labeled with supplier’s or manufacturer’s name, material or product brand name, and lot number, if any.

6.2 Store materials in their original, undamaged packages and containers, inside a well-ventilated area protected from weather, moisture, soiling, extreme temperatures, and humidity.

6.2.1 Products shall be packaged in a manner to prevent penetration by debris and to allow safe delivery by modes of ground transportation and air transportation where specified. Prior to shipping, products shall be inspected at the factory for damage.

Equipment shall be protected against extreme temperature and humidity and shall be stored in a conditioned or protected environment.

6.2.2 Equipment containing batteries shall not be stored for a period exceeding three months without powering up the equipment for a period of eight hours to recharge the batteries.

6.2.3 Any Material received at site in damaged condition will be summarily rejected and will have to be replaced at no extra cost to the US Government.

7. Detailed technical specifications of the UPS System:-

A. General

1. The UPS shall be housed in a freestanding cabinet with casters.

Maintenance shall be possible from the front and the rear.

2. The UPS shall be in a self-contained cabinet

3. Output power factor: 1.0.

4. Back feed contactor included for input. Mandatory bypass back feed protection must be implemented by:

a. Installation of upstream circuit breaker with shunt-trip connected to the UPS, or

b. Installation of optional breaker kit

5. The UPS shall support installation with either 3-wire (L1, L2, L3, PEN) or 4-wire (L1, L2, L3, N, PE).

6. The UPS shall contain a static bypass switch and a display. The UPS shall be of the double conversion on-line topology with power factor corrected inputs.

a. The UPS shall be sized for 100kW load.

b. The UPS battery shall be sized for 100kW at a power factor of

0.95 for 30 minutes.

7. The UPS shall be using a modular design in which power functions, static bypass, and system control are embedded in modules for optimal MTTR.

8. The UPS shall have a maximum input short-circuit level of 35 kA Icc.

9. The UPS shall be tested against EMC (electromagnetic compatibility) category C3.

B. System input

1. Nominal input voltage rating: 415 V 3-phase (adjustable for 380 V, and 415 V).

Input voltage window:

a. 380 V: 304 V to 437 V

b. 400 V: 320 V to 460 V

c. 415 V: 332 V to 477 V

2. Earthing principle: [TN-S] [TN-C] [TN-C-S].

3. Input frequency range: 50 Hz.

4. Input power factor:

a. 0.99 at load >25%

b. 0.95 at load >15%

5. Total harmonic distortion: < 3% (full linear load)

C. System output

1. Nominal output voltage rating: 415 V 3-phase (adjustable for 380 V, and 415 V).

2. Output voltage tolerance:

a. +/- 1% for symmetrical loads.

b. +/- 3% for asymmetrical loads.

3. Dynamic load response:

a. +/- 5% after 2 ms

b. +/- 1% after 50 ms

4. Output frequency: 50Hz.

5. Output voltage harmonic distortion:

a. <1% at 100% linear load

b. <5% at 100% non-linear load

6. Overload capability:

a. 150% for 1 minute (normal operation)

b. 125% for 10 minutes (normal operation)

c. 125% for 1 minute (battery operation)

d. 110% continuous (bypass)

e. 125% for 10 minutes (bypass)

7. Output power factor: 1.0

8. Audible noise at full load:

a. 68 dBA at 70% load

b. 74 dBA at 100% load

UPS and Battery system supplied must be complete with Movable OEM supplied Racks.

8. Operation Modes

i. Normal: In double conversion operation, the UPS supports the load with conditioned power.

ii. Battery: If the utility/mains supply fails, the UPS transfers to battery operation and supports the load with conditioned power from the DC source.

iii. Requested static bypass: The UPS can be transferred to the requested static bypass following a command from the display.

During static bypass operation, the load is supplied from the bypass source. If a fault is detected, UPS will transfer to normal operation or forced static bypass operation. If there is an interruption to the utility/mains power supply during requested static bypass operation, the system will transfer to battery operation.

iv. Forced static bypass: The UPS is in forced static bypass following a command from the UPS system or because the user has pressed the inverter OFF button on the UPS. During forced static bypass operation, the load is supplied directly by the bypass source.

v. Internal Maintenance Bypass: When the internal maintenance breaker (IMB) is closed, the UPS transfers to internal maintenance bypass operation. The load is supplied with unconditioned power from the bypass source. Service can be performed only on power modules, the static bypass switch module, and on the controller box during internal maintenance bypass operation. The internal maintenance breaker IMB can only be used in single systems with no external maintenance bypass breaker.

vi. External maintenance bypass: When the maintenance bypass breaker (MBB) is closed in the external maintenance bypass panel/cabinet, the UPS transfers to external maintenance bypass operation. The load is supplied with unconditioned power from the bypass source. Service can be performed on the entire UPS during external maintenance bypass.

vii. Static Bypass Standby: The UPS enters static bypass standby if the UPS is prevented from entering forced static bypass and the other UPS units of the parallel system can support the load. In static bypass standby, the output of the specific UPS is off. The UPS automatically changes to the preferred operation mode when possible.

viii. ECO mode: ECO mode allows the UPS to be configured to use requested static bypass, with the load supplied through the bypass, as the preferred operation mode under predefined circumstances.

If a fault is detected (bypass voltage out of tolerance, output voltage out of tolerance, etc.), the UPS will immediately transfer to double conversion operation or forced static bypass. The main advantage of ECO mode is a reduction in the consumption of electrical power.

In case of interruption to the utility/mains supply, the UPS transfers to inverter operation for a continuous supply of the load. The batteries are charged when the UPS is in ECO mode.

9. Components

i. Rectifier

1. UPS shall include an active power factor corrected rectifier.

2. The input current limiter shall be designed to:

a. Fast battery recharge:

1) 50% of the UPS output rating at up to 20% load for

415 V

2) 40% of the UPS output rating at up to 40% load for

415 V

3) 30% of the UPS output rating at up to 60% load for

415 V

4) 20% of the UPS output rating at up to 80% load for

415 V

5) 10% of the UPS output rating at up to 100% load for

415 V

b. Provide regulation with input deviation of up/down to +/-15% of the nominal input voltage @ 40 °C.

3. The battery charging shall keep the float voltage of:

a. 545 VDC for 40 blocks.

b. 654 VDC for 48 blocks.

4. The battery charging voltage shall be compensated against temperature variations (battery temperature compensation) to always maintain optimal battery float charging. Temperature compensation rate shall be 3.3 mV/degree/cell for ambient temperatures > 25 °C and 0mV/°C for ambient temperatures < 25 °C.

5. Input power factor shall be 0.99 lagging at 100% load without the use of passive filters. Rectifiers employ electronic waveform control technology to maintain the current sinusoidal.

6. Pulse Width Modulation (PWM) current control shall be used. Digital Signal Processors (DSP) shall be used for all monitoring and control tasks. Analog control shall not be acceptable.

ii. Inverter

1. The inverter shall consist of fast switching IGBTs.

2. The inverter shall be a 3-level hybrid inverter.

3. Inverter shall be PWM controlled using DSP logic. Analog control shall not be acceptable.

4. The inverter modules shall be rated for an output power factor at 1.0.

5. The nominal output voltage shall be 415 V 3-phase (adjustable for

380 V, and 415 V).

iii. Static bypass switch

1. The static bypass switch shall consist of fully rated Silicon Controlled Rectifiers (SCRs). Partly rated SCRs with a wraparound contactor shall not be acceptable.

2. The static bypass switch shall be of modular design with connectors at the rear.

3. The static bypass switch shall automatically transfer the load to bypass supply without interruption after the logic senses one of the following conditions:

a. Inverter overloads beyond rating.

b. Battery runtime expired and bypass available.

c. Inverter inoperable.

d. Control system is inoperable.

4. The static bypass switch shall automatically retransfer from bypass to the inverter.

5. The inverter shall be active (on).

6. The static bypass switch shall be equipped with a manual means of transferring the load to bypass and back to inverter once conditions allow it.

D. Battery

1. General: The UPS shall use an open cell, a valve-regulated sealed lead-acid heavy duty industrial battery, designed for auxiliary power service in a UPS application.

a. End of discharge voltage:

1) 384 VDC for 40 blocks (full load).

2) 420 VDC for 40 blocks (no load).

b. Battery charge current limit: The selection shall be made from the display. The battery charge current limit should be software and hardware current limit.

c. The battery charging circuit shall remain active when the PFC operates normally.

2. Battery monitoring:

a. Battery monitoring shall be provided at the system level.

b. The UPS shall incorporate a battery capacity test that will determine the available runtimes.

10. Mechanical

A. The UPS shall be housed in a freestanding cabinet with casters.

B. Dust filter shall be available.

C. The cable entry shall be from the top of the UPS. A bottom entry cabinet is available as an option.

D. The cabling section shall be large enough to accept copper cables.

E. The UPS shall have the following dimensions: 1991x600x850 mm and shall meet an ingress level of minimum IP20.

F. The UPS shall have a seismic kit option.

11. Display, controls, and alarms

A. A color touch screen display shall be located on the front of the UPS.

B. The following metered data shall be available on the display:

1. Year, month, day, hour, minute, second of occurring events.

2. Input voltage.

3. Input current.

4. Input frequency.

5. Output voltage.

6. Output current.

7. Output frequency.

8. Battery voltage.

9. Battery current.

10. Battery temperature.

11. Energy monitoring.

C. The display shall allow the user to display active alarms.

D. The following controls or programming functions shall be accomplished by the use of the display unit.

1. Silence audible alarm.

2. Set the alphanumeric display language.

3. Display and set the date and time.

4. Enable or disable the automatic restart feature.

5. Transfer load to and from static bypass.

6. Test battery condition on demand.

E. For purposes of remote communications with the UPS, a network management card shall be integrated.

12. Accessibility

A. Software and connectivity

1. The Ethernet Web/SNMP Adaptor shall allow one or more network management systems (NMS) to monitor and manage the UPS in TCP/IP network environments. The management information base

(MIB) shall be provided in MIB formats. The SNMP interface adaptor shall be connected to the UPS via the RJ45 serial port on the standard communication interface board.

2. UPS shall offer a Modbus interface compatibility.

3. The UPS shall be equipped with nine dry contacts (four inputs, five outputs) for user-assignable alarms or remote monitoring.

B. Software compatibility The UPS manufacturer shall have available software to support shutdown.

13. Execution

13.1 Examination

C. Verification of conditions: Examine areas and conditions under which the UPS is to be installed and notify the COR in writing of any conditions detrimental to the proper and timely completion of the work. Do not proceed with the work until unsatisfactory conditions have been corrected. The beginning of the work shall indicate acceptance of the areas and conditions as satisfactory by the Installer.

13.2 Installation

Preparation and installation shall be in accordance with approved product data, final shop drawings, manufacturer’s written recommendations, and as indicated on the Drawings.

13.3 Manufacturer assisted start-up

A manufacturer assisted UPS start-up shall be available, manufacturer trained service personnel shall perform the following inspections, test procedures, and on-site training:

13.3.1 Visual Inspection:

13.3.1.1 Inspect equipment for signs of damage.

13.3.1.2 Verify installation per manufacturer’s instructions.

13.3.1.3 Inspect cabinets for foreign objects.

13.3.1.4 Inspect batteries.

13.3.2 Mechanical Inspection:

13.3.2.1 Check all UPS, external battery cabinets internal power wiring connections.

13.3.2.2 Check all UPS, external battery cabinets terminal

screws, nuts, and/or spade lugs for tightness.

13.3.3 Electrical Inspection:

13.3.3.1 Verify correct input and bypass voltage.

13.3.3.2 Verify correct phase rotation of all mains

connections.

13.3.3.3 Verify correct UPS control wiring and terminations.

13.3.3.4 Verify voltage of batteries.

13.3.3.5 Verify neutral and ground conductors are properly

landed.

13.3.4 Site Testing:

13.3.4.1 Ensure proper system start-up.

13.3.4.2 Verify proper firmware control functions.

13.3.4.3 Verify proper firmware bypass operation.

13.3.4.4 Verify proper internal switch(es) operation.

13.3.4.5 Verify system set points.

13.3.4.6 Verify proper inverter operation and regulation

circuits.

13.3.4.7 Simulate input power failure.

13.3.4.8 Verify proper charger operation.

13.3.4.9 Document, sign, and date all test results.

13.3.5 On-Site Operational Training: During the manufacturer assisted start-up, operational training for site personnel shall include LED indicators, start-up and shutdown procedures, maintenance bypass and AC disconnect operation, and alarm information.

14. Manufacturer field service

14.1 Worldwide service: The UPS manufacturer shall have a worldwide service organization available, consisting of factory trained field service personnel to perform start-up, preventative maintenance, and service of the UPS system and power equipment. The service organization shall offer 24 hours a day, 7 days a week, 365 days a year service support.2 hours emergency service shall be available in case of a breakdown.

14.2 Demonstration

Provide the services of a manufacturer-authorized service representative of the manufacturer to provide start-up service and to demonstrate and train the Owner’s personnel.

14.2.1 Test and adjust controls and safety. Replace damaged or inoperable controls and equipment.

14.2.2 Train the Owner’s maintenance personnel on procedures and schedules related to start-up and shutdown, troubleshooting, servicing, and preventive maintenance.

14.2.3 Review data in operation manual with the Owner’s personnel.

14.3 Maintenance

14.3.1 Maintenance contracts: A complete offering of preventative and full-service maintenance contracts for the UPS system and the battery system shall be available. All contract work shall be performed by OEM’s Electric trained service personnel.

14.3.2 The manufacturer shall, upon request, provide spare parts kits for the UPS module in a timely manner as well as provide access to qualified and trained service personnel to provide preventative maintenance and service on the UPS module when required.

14.3.3 The UPS shall be repairable by replacing standard subassemblies requiring no adjustments.

14.3.4 The UPS shall be designed to support power module insertion and removal in any mode of operation when performed by a qualified person following safety related work practices. A recognized accreditation laboratory shall certify basic touch compliance to IEC62040 & IEC60950 through all stages of the swap. A recognized accreditation laboratory shall witness arc flash incident energy exposure testing in compliance with IEC TR 61641 and verify that the qualified person is not exposed to incident energies exceeding 1.2cal/cm² through all stages of the swap.

14.3.5 UPS subassemblies shall be accessible from the front and the rear.

UPS design shall provide maximum reliability and minimum MTTR (mean time to repair). To that end, the UPS shall be equipped with a self-test function to verify correct system operation. The self-test function shall identify the subassembly requiring repair in the event of an alarm condition. The electronic UPS control and monitoring assembly shall therefore be fully microprocessor-based, thus doing away with potentiometer settings. This shall allow:

14.3.5.1 Auto-compensation of component drift.

14.3.5.2 Self-adjustment of replaced subassemblies.

14.3.5.3 Extensive acquisition of information vital for computer-aided diagnostics (local or remote).

14.3.5.4 Socket connection to interface with computer-aided

diagnostics system.

15. Training

UPS service training workshop: A UPS service training workshop shall be provided by the UPS manufacturer. The service training workshop shall include a combination of lecture and practical instruction with hands-on laboratory sessions. The service training workshop shall include instruction about safety procedures, UPS operational theory, sub-assembly identification and operation, system controls and adjustment, preventative maintenance, and troubleshooting.

16. UPS Testing

a. The Contractor shall perform the following tests, as a minimum, at site prior to handing over, to confirm the functional and the performance specification of the UPS as specified. All required test equipment like Digital Oscilloscope, Voltage Regulator, Measurement Meters etc. shall be the responsibility of the Contractor without any additional cost.

b. The Contractor shall demonstrate as a minimum the following features on site by providing all required test equipment, such as power factor improvement, input current THD, output voltage THD, output frequency and all other performance monitoring requirements detailed before as required by the Owner.

c. All tests should be witnessed by the COR and reports be submitted for records.

17. Safety

• The contractor is responsible and shall continue management and implementation of a safety and health program throughout construction.

• The Contracting Officer and the Post Occupational Safety and Health Officer [POSHO] reserve the right to suspend work when and where Contractor's safety and health program is operating in an inadequate or non-complying manner.

• Fire extinguishers shall be always kept on site during torch applied installations.

• The contractor shall provide all Personal Protective Equipment for the workers as per the requirement of the site. Work will be stopped in case the proper protection equipment is not found with the workers and the lapse of time shall be at the Contractor’s expense.

SAFETY STANDARDS FOR USG CONTRACTS

Safety standards to be followed at construction and renovation sites

Activity Hazard Analysis (AHA)

1. The contractor must document in the bid for the work how the control of each hazard will be implemented and maintained during the project by submission of a safety plan and activity hazard analysis (AHA) for high hazard activities. The POSHO or qualified Post representative must review the contractor's proposal and provide feedback to the responsible project manager and Contracting Officer prior to acceptance of the bid.

2. Any situation where in the work in progress can pose a threat to the user of work area in emergency, contractor shall ensure proper barricading (sturdy enough for the purpose) to avoid any risk.

Covid 19 Precautions

1. Every worker on site shall wear a mask all the time.

2. Workers shall maintain social distancing all the time.

3. No worker shall be in close proximity with other workers for more than 10 minutes and that too with the mask and gloves on.

4. The contractor shall ensure temperature testing of all workers coming on site in the morning to make sure that no one is suffering from fever.

General

1. All workers on the work site must wear shoes. No worker with flip flops will be allowed to work at site.

2. All the workers should wear full clothes. No half pants and other non- appropriate clothing (Dhoti) will be accepted.

3. Malba / trash accumulated on the site should be removed at a regular interval (if possible on daily basis) so that it should not pose any trip hazard.

4. Employees exposed to hazards created by different works environment shall be protected by personal protective equipment. Appropriate protective clothing for any operation varies with the size, nature and location of work to be performed.

5. In extreme hot conditions drinking water must be made available to the worker and working duration in exposed conditions should be scheduled accordingly.

6. It is the responsibility of the contractor to make available all the PPE (Personal Protective Equipment) as per the requirement of the work site and as directed by the COR. Any mishap due to negligence on the part of the contractor will be entirely the contractor’s responsibility.

Machinist / Welding Jobs

1. Hot work permits are required to be filled for each hot work to be performed on USG site.

2. The contractor shall follow the attached standards regarding different type of welding to be done on the site.

3. All workers who are arc welding must use a full-face shield with #10 or darker lenses. No worker will be allowed to arc weld with sunglasses, no matter how dark the lenses.

4. All the workers working on grinding and sanding job should have approved face masks and goggles for face and eye protection.

5. Workers who handle heavy metallic material should have appropriate gloves and safety shoes as per the job requirement.

6. Lifting and shifting of the heavy material to be done with the help of appropriate machines.

7. Compressed gas cylinder shall be properly marked and should always be kept in standing positing with guard against fall.

8. Hoses connected to the cylinder should be in good condition.

9. In case Arc welding is done inside the premises proper ventilation should be arranged in the vicinity.

10. Contractors should use welding shields during the work to protect the people around against any potential vision hazard.

11. Always keep an approved fire extinguisher near the site of welding.

12. Workers working with metal sheets must wear appropriate gloves to avoid any cuts on the hands or mishap on the site.

13. Electrical connections for the welding set and the grounding for the same shall be done properly to the satisfaction of the embassy electrician.

Please refer to the electrical section in the document.

Ladders Safety

1. Contractors will use aluminum or fiber glass ladders for all purposes.

Wooden ladders are not allowed on the site.

2. Proper ladder for a specific job should be used (for example fiber glass ladders for electrical work etc.).

3. Damaged ladders or ladders with missing supports, shoes etc should not be used on the site.

4. The height of the ladder should be at least two feet above the required height for the work.

Electrical

1. All the equipment / machines to be used for the execution of the job should be properly grounded.

2. All the extension boards to be used at the site should have proper earthing.

3. All connections to any of the outlets should be through three pin plug.

Direct connection of wires in not allowed on the site.

4. Damaged wiring/ cabling for the machines / tools to be used at site are not acceptable. The extension cord or wire with the machines should be one core.

5. Electricians working on the site should wear shoes with rubber soles and should use rubber gloves during execution of the work.

6. Any heavy equipment to be plugged in for the work should be done under supervision of the embassy electrician. Contractor on his own should not plug in heavy equipment.

7. No taped joints or undersize wiring is allowed at the site for the work.

Carpentry

1. Carpenters should have dust masks to protect them from the potential hazard from saw dust. In case a sanding machine is used at the site the machine should have proper guards, and the operator should have suitable PPE (personal protective equipment) with them, e.g. safety goggles, safety shoes, gloves etc.

2. All the wood to be used at the site should be properly stacked at one side. It should not be scattered around and pose a threat to a trip hazard.

3. Entire site should be kept clean from the saw dust at the end of the day.

4. Carpenters shall use machine guards if at all machines are used at the site.

5. All the care should be taken to protect the flooring against any kind of potential damage.

6. All the drill machines or other electrical tools to be used at the site should be properly grounded and wired.

7. Contractors should use proper tools and tackles for the execution of the work at site.

8. Nails and other sharp material which can pose a threat of accident should not be scattered on the site.

Fire

1. Contractors shall provide and place fire extinguishers as per the requirement of the site (as recommended by the COR).

2. No flammable material should be kept inside the premises at any given point of time.

Lock Out / Tag Out

1. Lock out devices should be used during the testing of the electrical points and wiring.

Confined spaces

1. If at all contractors has to work in a confined space they should contact COR before proceeding with the work. Contractors should arrange all the equipment as instructed by the COR to accomplish the job in a safe manner.

Hearing Protection

1. Contractor should assure that all the workers working in noisy surroundings should wear earmuffs or other approved devices.

Height Protection

1. Any work to be carried out over and above 8’-0” needs a sturdy metal pipe scaffolding to carry out that work. Ladder or any other arrangement needs to a preapproval from COR to be implemented on the site.

For any further clarification please contact POSHO (Post Occupational Safety and Health Officer) at # 011-24198280 OR APOSHO Ms. Vidushi Sharma at # 8714.

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