Site Safety Instructions

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General Safety Guideline Sites implementation/maintenance work involves working at remote location, height, different site scenario & working environment. Hence it is important that all personnel are aware of safety requirement & comply with the same.

General safety requirement & local regulations are to be complied in all conditions.

Equipment manuals have specific safety instructions relevant to that equipment & these manuals shall also be referred while working with respective equipment.

The safety instruction compiled below shall be referred & used as addition to above.

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Warning sign There are symbols used at equipment & in the manuals to indicate the hazardous activity & relevant safety instructions shall be followed. Common hazard symbols are:

Hazard symbol This denotes danger/ warning or caution & means that an accident may occur, if safety precautions are neglected.

Electrical Hazard

Electrostatic Discharge

Personnelshould pay attention to hazard symbol labels on the equipment. First Aid kit shall be available with installation team for administering the first aid in case of injury.

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Working At Height/Tower Sites implementation work involves working on Tower/height for equipment installation, alignment & testing etc. Working on tower/height has risk of falling objects, tools, and individual if not adequately protected. This can lead to accidents.

Following precautions shall be complied while working on tower/height: Personnel working on tower/mast/roof/height must have attended requisite training & medically fit . Full Body safety harness, Helmet, anti slippery shoes must be used.

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Adequate protecting clothing is must in winter/ cold weather All lifting devices are inspected & approved for the load capacity.

All personnel working/present near tower/mast shall wear helmet.

Climbing ladder & structure is safe for working.

Tower/mast metallic structure is earthed properly for discharging the lightening energy safely.

In case of adverse weather condition like thunderstorm, rain, cyclone, etc, no climbing/working on tower/height is permitted.

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Always keep 3 points of contact (2 feet & 1 hand or 2 hands & 1 foot), when climbing/working on ladder to reduce risk of falling.

Team leader/supervisor shall inspect the lifting devices & safety harness, equipment worn by person, before allowing them to climb the tower/height.

While lifting the load, make sure that angle between strap is not more then 90° at a point where they are attached to lifting device.

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Electrical Hazards Sites implementation work involves working with site electrical & power system & precautions to be taken while working with Electrical system & devices. Following safety rules shall be complied to ensure Electrical safety: Person working on electrical & power system shall be qualified & trained. Power supply to equipment shall be switched off if feasible or equipment is damp inside & caution board to be placed on main switch stating “Do not switch on – Person at work”.

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Metallic items like wrist watch, rings, bracelet, chains etc to be removed to prevent accidental short circuiting.

Upper pockets of shirt/jackets shall not have any metallic items like coin, pen etc.

Insulated tools to be used while working with live systems. Tools can be insulated by covering/wrapping with insulation tape.

Suitable shoes/sandals/slipper of rubber sole to be worn while working with electrical system, to provide insulation between foot & ground.

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Earthing of equipments to be insured & verified before connecting power/working with internal electrical systems.

Electrical powered tools like drill machine etc shall be used in accordance with manufacturer operating & safety guidelines.

Check before if there are any concealed power cables in the wall/floor/equipment, where you need to drill. In that case no drilling is allowed.

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Working with Batteries Sites implementation work involves installation, assembly & connection, termination of Batteries & precautions to be taken while working with Batteries.

Following safety rules shall be complied to ensure safety: Person working shall be qualified & trained. Power supply to equipment shall be switched off if feasible or equipment is damp inside & caution board to be placed on main switch stating “Do not switch on – Person at work”. Other safety rules applicable for Electrical safety

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Suitable shoes/sandals/slipper of rubber sole to be worn while working with electrical system, to provide insulation between foot & ground.

Batteries may give off explosive gases, hence battery area must be adequately ventilated (E.g. keep doors open) & protected from fire.

Battery can leak electrolyte, if improperly handled. Hence use the requisite protective equipment. Electrolyte in contact with skin/eyes can cause injury. In that case rinse the affected area with water & seek medical attention immediately.

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Fire Safety Sites implementation/maintenance work is carried out at site location. These could be green field, roof top, room, prefab shelter/equipment room/container etc. The locations can have danger of fire because of various reasons/cause. Installation/Maintenance team needs to take following precautions to observe fire safety: Before starting work, Personnel shall check the site for fire/ emergency exits, fire extinguisher system/equipments available at site & emergency contact numbers apart from general awareness. All the packaging/ wooden boxes etc shall be stored/ arranged at a safe place, as this may become fuel to fire & can spread the fire. Use the powder/carbon dioxide type extinguisher for electrical fire.

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Electrostatic discharge (ESD) Sites implementation/maintenance work involves working with sensitive devices/cards & modules, which can get damaged due to static electricity. Precautions for electrostatic discharge shall be taken while working with such devices.

Following precautions shall be complied while working with Electrostatic sensitive devices: ESD wrist strap shall be worn & connected to earth, before touching/handling ESD sensitive devices. ESD sensitive devices/cards etc. shall be stored in ESD bags/original packaging.

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RF safety Sites implementation/maintenance work involves working on live site, where antennas are radiating RF energy.

Following precautions shall be observed whileworking at/nearby active RF antennas/RF energyradiating source:

Do not stand/work in front of operational antenna, unless verified that RF energy levels are within safe limits.

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Laser safety Sites implementation/maintenance work may involve working with optical devices/interface having laser source which is harmful for the human beings.

Following precautions shall be observed while working at optical devices/interface having laser source: Never look at the laser source/at the end of fiber optic. Switch off the unit producing laser rays before disconnecting the optical fiber cable/patch cords.

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