In an industry, every hour of downtime is expensive. Imagine a scheduled maintenance shutdown: in just a few days, a piece of equipment weighing several tonnes has to be replaced, a machine base reinforced, a new mezzanine assembled and teams cleared to work at height on the roof. All at the same time, safely and without delaying the restart of production.

That only works with engineering beforehand. Here you will meet the engineering services that industry, construction sites and fuel stations require, and why each of them protects people, equipment and deadlines.

Industrial design

In industry, the structure does not carry only people and furniture. It carries vibrating machines, silos full of material, overhead cranes and equipment running twenty-four hours a day.

  • Machine bases: must resist not only the weight of the equipment but the dynamic loads of operation. If the base is not properly sized, vibration spreads, misaligns the equipment, wears out bearings and cracks the surrounding floor. So it is calculated from the manufacturer's data and is often isolated from the rest of the floor.
  • Steel mezzanines: are a quick way to gain area inside a warehouse, for offices, storage or operating platforms. The design defines the structure for the real working load, the connections, the floor, the stairs and the guardrails.
  • Silos and storage structures: have their own behaviour. The stored material pushes on the walls differently during filling and emptying, and this must be taken into account in the calculation.
  • Warehouses: have large spans, extensive roofs and wind action, which is one of the most important loads on this type of structure (ABNT NBR 6123).

A detail that makes all the difference in industry: the design must consider the work with the factory running. The assembly sequence, interference with the process and shutdown windows are part of the design, and not just of the construction.

Rigging: the lifting plan

Now, the most critical moment of many shutdowns: lifting loads. Raising equipment weighing several tonnes with a crane is not just a matter of having a big crane. It is an operation that requires calculation, and that calculation is the rigging plan, or lifting plan.

  • The load: the weight, the dimensions, the lifting points and the centre of gravity.
  • The crane: where it will work, the boom length, the operating radius and the manufacturer's load chart, which says how much it can lift in each configuration.
  • The accessories: slings, cables, shackles and spreader beams, each with its own capacity.
  • The surroundings: the ground the crane stands on, because the soil must withstand the outrigger pressure, interference such as power lines and nearby structures, the wind limit for the operation, the exclusion zone and the sequence of movements.

The result is a document with drawings, calculations and the ART, which the field team follows step by step. Many companies require this plan signed by a qualified professional before authorizing the operation. And rightly so: many lifting accidents have, at their origin, a step that was not calculated or checked.

Work at height and lifelines

Another risk present in every industry and on every site is work at height. Regulatory standard NR 35 considers work at height to be any activity carried out more than two metres above the lower level where there is a risk of falling.

The priority is always collective protection, such as guardrails and platforms. When that is not possible, personal fall protection systems come in, and that is where the lifeline appears: a cable or rail fixed to the structure, to which the worker connects by harness and lanyard, being able to move around safely.

But a lifeline is not a cable tied between two points. In a fall, the cable transfers very large forces to the anchorages and to the structure they are fixed to. The design calculates these forces, checks whether the structure can take them, and defines the spacing of the anchorages, the sag of the cable and the fall clearance, which is the height needed for the worker not to hit anything before the system stops the fall. NR 35 requires anchorages to be designed by a legally qualified professional, and technical standards for anchorage devices, such as ABNT NBR 16325, set out the requirements and tests.

And, like every safety system, a lifeline needs periodic inspection and records.

PGR and noise reports

Let us now turn to risk management. Since the update of NR 1, companies have had the PGR, the Risk Management Programme, which replaced the former PPRA. In construction, NR 18 requires a PGR for the construction site, in place of the former PCMAT.

The PGR has two main parts: the risk inventory, which identifies the hazards of each activity and assesses the risks, such as falls, burial, electric shock, noise, dust and machinery; and the action plan, which defines the preventive measures, those responsible and the deadlines. It is not a document for the drawer. It is a living programme that must be updated whenever the work or the process changes.

And one of the most common risks in industry and on site is noise. There are two situations here. Inside the company, noise is assessed as a risk to the worker's health, within risk management. Outside it, the noise reaching the neighbourhood is assessed under ABNT NBR 10151, with measurements at defined points, compared with the limits for each type of area and time of day. This environmental noise report is requested in permitting, in neighbours' complaints and in court cases, and indicates whether control measures need to be adopted.

Waste: PGRCC, MTR and CDF

Every construction site and every industry generates waste, and the law requires knowing where each type goes. In construction, the Conama resolution on waste (Conama 307) classifies rubble into classes, according to the possibility of reuse and the risk, and City Halls require, depending on the size of the work, the PGRCC, the construction waste management plan.

The plan defines how each type of waste is separated on site, stored, transported and disposed of: what can be recycled, what goes to a licensed landfill and what needs special care, such as paints, solvents and oils.

And the path of each load must be traceable. The MTR, the waste transport manifest, accompanies the load from the generator to its destination, through an electronic system. And the CDF, the final disposal certificate, proves that the waste arrived and was treated correctly. With these documents, the company demonstrates that it has met its responsibility.

Fuel stations: ANP plan and separator

And a segment with rules of its own: fuel stations. To operate, a station needs authorization from the ANP, the National Petroleum Agency, which requires, among other documents, the plan of the installations, with the location of the tanks, pumps, fuelling islands and other structures. It also goes through environmental licensing, under the Conama resolution specific to fuel stations (Conama 273).

One of the central items is the oil and water separator. All the water that falls on the forecourt can carry fuel and oil. This water is collected by channels and passes through the separator, which retains the oil before releasing the water. The system must be properly sized, correctly installed and maintained with periodic cleaning. A badly sized or unmaintained separator is an environmental liability.

Common mistakes

  • Placing a new machine on the existing floor without checking it.
  • Lifting a load without a plan.
  • Installing a lifeline without an anchorage design.
  • Treating the PGR as paperwork for inspectors.
  • Hiring waste transport without demanding the manifest and the disposal certificate.

Frequently asked questions

What is a rigging plan?

It is the technical planning of a load lift: weight and centre of gravity, crane and load chart, accessories, ground support, interference, wind, exclusion zone and sequence of movements, with an ART.

When is a lifeline mandatory?

When there is work at height (above 2 m with a risk of falling, under NR 35) and collective protection does not eliminate the risk. Anchorages must be designed by a legally qualified professional.

What is the PGR?

It is the Risk Management Programme (NR 1), with a risk inventory and an action plan. In construction, NR 18 requires a PGR for the site, which replaced the PCMAT.

What does a noise report under NBR 10151 assess?

The noise level reaching the surrounding inhabited areas, measured at defined points and compared with the limits for each type of area and time of day.

What are the MTR and the CDF?

The MTR is the Waste Transport Manifest, which accompanies the load from generator to destination. The CDF is the Final Disposal Certificate, which proves correct disposal.

What is the oil and water separator at fuel stations?

It is the system that receives water from the forecourt and retains the oil and fuel before the water is discharged. It needs proper sizing and periodic maintenance.

Do I need a design to install a new machine?

Yes, the base must be checked or designed for the weight and the dynamic loads of the equipment, according to the manufacturer's data.

When do I need a rigging plan?

For every crane lift, and especially with heavy or critical loads or where there is interference.

Does a lifeline need an ART?

Yes, the design and installation of the anchorages must have a technical manager.