Como identificar riscos elétricos ao planejar um projeto de construção?

Site visit or investigation during design phase is a crucial step , to have a full picture about the area and site infrastructure. Most of the time we don't have accurate drawing for the current existing services like underground cables , water pipes. So site visit and survey is required to ensure that no accidents might happen.

Great comments on site assessment. Site planning is as crucial though. It goes hand in hand with the risk assessment and mitigation strategies. I am keeping site planning in parallel with risk mapping cause in my experience, a perfect site plan doesn’t exist and there’s always room for improvement especially in a big, complex project. The site also changes as the project progresses. The areas where the risks are more for e.g., a fabrication yard which will be housing welding machines and other high voltage equipments will need a specific health and safety plan, auditing strategy and mitigation plan (as and when needed). This area can further be cordoned off to make it even more secure/vice versa.

When planning a construction project, it is important to identify electrical hazards to ensure the safety of workers and the public. Some common electrical hazards found on construction sites include improper grounding, exposed electrical parts, inadequate wiring, overhead power lines, damaged insulation, overloaded circuits, and wet conditions. To identify these hazards, it is recommended to thoroughly inspect all electrical systems, equipment, and installations on the construction site. Look for any signs of damage, wear, and tear, or improper installation. Take note of any exposed wiring, overloaded circuits, inadequate grounding, or damaged equipment that could pose a risk of electric shock or fire hazards. site.

Completely agree that a thorough site investigation is key to identifying potential hazards and helping refine the onward brief, however before we even consider stepping foot onto the site its important you assess the risk to your own team through a detailed site risk assessment supported by discussion with, and information supplied by, your end client. Asbestos registers, installation plans, previous inspection reports or ppm registers are all documents you can request prior to your visit to provide your team the fullest picture of the site, and its risks, before they further refine those hazards via site survey. This process may identify a need for specialisms and expertise that you might not be able to safely offer. Safety First 👍

initially we will have the execution plan which will illustrate the areas and activities sequence, then based on that site facility plan will be built according to it, safty plan will be belt after that to be align with those plans and will dedicate the potential hazard for example based on the execution plan area one will be executed first then area 2 will follow after 2 weeks from area 1 start then the site facility plan will select a location for the generator will respect the areas execution sequins even the cable route will respect that which considered in the safty plan and illustrate all the proaction’s which should be taken to minimize the electrical hazard

Electrical Hazards are all around us, and electricity is not very forgiving when an incident occurs. Make sure you plan out your Temporary Power needs and requirements with your Electrical Contractor. Sit down and have a discussion with each Trade/Contractor and understand what type of lighting and power will be needed for Construction. Not only for the needs of Building and Installing, but what equipment will need power for Commissioning and Startup. Once that is accomplished the plan can start to go in place for the different power demands, and for the safety of everyone on the Job-Site. How will this project need to be phased to meet these requirements and have robust controls in place for protection of people and equipment.

Fail to plan is a plan to fail. Having proper planning and pre-installs allow all parties to get on the same page. A proper plan lines out the work and expectations. You can share what you found during your early access visit.

In my perspective, a systematic and sequential approach, accompanied by rigorous quality checks and the allocation of requisite manpower and materials, is pivotal for the progressive execution of any project. The nature of electrical hazards is such that they not only disrupt work schedules but, in certain instances, can extend beyond temporal inconveniences, impacting both time and, critically, the safety of individuals involved. It is imperative, therefore, to incorporate safety planning into every facet of the project. Considering the potential ramifications of power failure, it becomes essential to devise contingency plans, ensuring a backup power source is readily available.

Most important is once you plan the work, work the plan. Sounds corny but very useful plans fall apart whenever a delay develops.

This is the most important step before any electrical work is envisaged. Ensuring proper LOTO (Lock out tag out) process along with toolbox talks and proper PPE plus supervision is MUST.

1.Intial site survey . 2.Follow Road assignment chk list as per sii. 3.*Look for any signs of damage, wear, and tear, or improper installation. Take note of any exposed wiring, overloaded circuits, inadequate grounding, or damaged equipment that could pose a risk of electric shock or fire hazards. Consider the proximity of power lines and whether work will be done near them . 4.Follw LOTO and CTC (Test before touch)

All personnel involved in this process must be open to being questioned on the status of the electrical equipment and isolation in place. When you are confident that you have carried out the correct isolation and have identified all that is required you will be happy to be questioned as this will only enhance everyone's understanding of what is in place.

"In my professional perspective, prioritizing all essential electrical work that does not carry immediate significance and can be conducted by isolating power is paramount for ensuring safety. Conversely, activities performed without proper isolation demand heightened safety precautions, given that electrical hazards pose a significant risk along charge lines. The risk associated with electrical hazards in charge lines necessitates the implementation of comprehensive safety protocols. Additionally, whenever discharging any electrical line, it is essential to ensure a meticulous grounding process, eliminating any potential differences and ensuring that no residual charge is left unaccounted for.

all relevant disciplines must be involved in the LOTO procedure including the operators in any centralized Control Rooms before any repair or installation work can begin.

In terms of protection equipment, we should identify the normative under which the equipment is manufactured. As an example, the IEC and the NEMA normative are quite differents for MV and LV equipments; NEMA considers cabinet protection as passive, so operator must wear protective clothes, which are divided in 4 types depending on the potential amount of energy involved (cal/cm2). In other hand IEC normative consider the active protection of the equipment and identify different Internal arc classification "IAC" according to the IEC 62271-200 (A - F - L - R).

A escolha dos equipamentos é de fundamental importância para a proteção tanto das estruturas e dos funcionários. Uma atenção especial deverá ser dada em relação a classe dos equipamentos a serem selecionados.

Agree PPE is one of the last in hierarchy of measures to control the risk. Guess the workforce and management is constantly exposed to a myriad of marketing messages promoting PPE as a ‘panacea’ - sadly this does skew perception of the well documented controls methodology.

I agree with this article and supporting risk assessments should be developed to identify the hazards and risks associated with the work practices - this can ensure specific requirements for personal protective equipment is resourced and used by the operatives. Furthermore, employees should have received suitable training and site supervision in place to ensure the controls implemented are followed and adhered too. Employees should understand the process for reporting faulty PPE received and able to identify any faults with the PPE provided, this also leads onto the correct storage arrangements for the PPE.

Identify potential risks such as electric shock, arc flashes, arc blasts, burns, and exposure to flying debris or chemicals to determine the most appropriate types of PPE needed. Determine the voltage levels involved in the electrical work since different voltage levels require different levels of insulation and protection. Ensure that the selected PPE is rated for the voltage levels present to provide adequate protection. Consider the size, fit options, comfort and assess the specific tasks to be performed and the PPE requirements for each because some tasks may require additional or specialized PPE. Choose reputable suppliers that provide reliable and high-quality electrical PPE. Understand the certification labels and it's rating.

While safe practices are taught and rehearsed, the key is being compliant to without having anybody oversee or check. Self discipline and right habits are must. Since lot of electrical related work is in close confines, will not be possible to always have somebody looking over.

In construction, it involves consistently following established safety protocols to mitigate potential hazards. This includes conducting thorough risk assessments before commencing any task, utilizing appropriate PPE, and adhering to lockout/tagout procedures when working with machinery or electrical systems. Communication is key, and workers should be well-informed about potential risks, emergency procedures, and safe work practices. Regular training sessions and toolbox talks can reinforce safety awareness and help prevent accidents. Additionally, maintaining a clean and organized workspace, properly storing tools and equipment, and reporting any unsafe conditions contribute to a culture of safety.

Delimitar las zonas de trabajo, socializar procedimientos e identifucar condiciones y actos inseguros. Usar todos los EPP adecuados y además implementar la distancia mínima para evitar estar cerca de fuentes de exposición eléctrica.

One of the most important things to avoid electrical hazards is that only qualified personnel should work on live electrical wires and always follow your company’s electrical safety work practices.

Developing and implementing working procedures is vital in ensuring common safe practices and procedures are adopted by contractors and sub contractors working on a project. This can include suitable isolation procedures deemed necessary for the working environment and any permit requirements to identify additional safe systems of work.

Train workers, provide workers the necessary information and show them return of experiences from other projects and how the hazards happened before. Don't forget to do small quiz by end of training to ensure that they have basics information at least.

Treinar os colaboradores e essencial para os mesmos está ciente ao riscos da sua área , treinamento, capacitação e diálogo nunca é perdido um grande empresa treinar seus funcionários para o futuro

Provide Training and Awareness: Properly train all construction personnel about electrical hazards, arc flash, safe work practices, and emergency procedures. Encourage workers to report any potential electrical hazards they encounter.

Seguramente el sexto paso deberia ser el primero. Si el equipo conoce el trabajo que realiza y los riesgos que conlleva, esta mucho mas capacitado para reaccionar y actuar.

Employees should be provided with sufficient and suitable training related to the work they are undertaking. The training should be up to date and clearly communicated to ensure the information has been effectively taken in. To support the training documented procedures should be implemented to further assist with the controls measures applicable to the training requirements and clearly identify the emergency arrangements to follow. Organisations should also look at lessons learned and improve on incidents which may have occurred in the past to allow proactive measures for future controls.

First step in Safety for any project or organization is to have Project head who is serious and sincere about Safety of every staff / workmen on his / her project. Safety is driven from TOP and implemented from bottom. Safety must be the top most priority for the leader and must be having Safety team which can prepare best Safety plan including best safe practice like Hazard identification / HAZOP / Task risk assessment/ TBT / Safety awards / measurements etc. Unless top leadership is serious, no safety culture can be developed and project can’t be safe.

1. Be vigilant even if it is just repitition activity 2. Don't rush but be well prepared 3. Make the lists, asks your counterpart to review them & follow them before you start the work 4. Conduct the pre-work brief meeting, ensure all your team member are there and listening

Careful consideration must be given while choosing Location for of Electrical Equipment/ meters/ installation room. It is frequently seen that due to acute paucity of space [especially at locations like Mumbai], such room(s) doubles up as a storage space. Management and concerned technical workers must ensure to avoid it being used for such other purposes. As, in case of emergency movement within such room is hazardous and may leads to mishaps. These rooms to be properly identified with the signages and warnings so that access to these room(s) should been restricted. The staff deployed to look after these room(s) should be well trained and sensitised so that they know the importance of access and use of such vital installations.

while doing grounding on your site i think you could financially benefit this and do a grounding system for lightning and thunderstorms specially if we talk about construction sites and oil and gas sites which have a very wide open spaces with compostable/explosive materials present.

LOTO is a great tool/program in such situations. An effective LOTO saves many lives. No electrical energization should happen without LOTO.