24 de Diciembre
24 de Diciembre: workshop with office, do fumes reach the ducts?
In 24 de Diciembre there are plenty of metal, paint and mechanical workshops with a small air conditioned office attached to the shed. That shared wall is also a path for the fumes.
By Limpieza de Ductos Panamá
Yes, fumes from a workshop in 24 de Diciembre reach the ducts of the adjoining office, almost always through the connecting door and the return grille. Welding fumes leave a gray metallic film on the vanes and paint fumes leave a sticky residue that traps dust. The camera confirms it in the first run after the return, and the solution lies in separating the air of both spaces, not in cleaning more often.
The 24 de Diciembre district, created by Law 13 of 2002 out of Pacora, had according to the 2012 partial plan of the Municipality almost 68% of its surface unoccupied. That land availability explains a common type of business: a workshop shed with a zinc roof and, in one corner, a block built office with air conditioning where customers are served and invoices are kept. Workshop and office share a wall, a door and, without anyone planning it, the air.
Welding and paint fumes from the workshop
Welding fumes are an aerosol of very small metal particles that cools and floats at the shed ceiling height. Paint and solvent fumes are vapor that is lighter than air while warm and drifts toward any cooler zone. The grinder adds coarse metal dust. The three reach the office in different ways, but share the same destination: the return grille, which draws air from the point nearest the door.
Adjoining office: how the fumes get in
The office is cooler than the shed. When the door opens, the warm, loaded workshop air enters at the top and the cool office air leaves at the bottom. If the workshop has a large exhaust fan running, the pressure inside the shed drops and pulls air from the office, which in turn draws outdoor air through any crack. If the fan is off, the opposite happens and the fumes pile up against the office wall. OSHA, in its indoor air quality guide for commercial buildings, recommends checking that the emissions of one activity do not affect the other occupants under the same roof, and a workshop with an office is exactly that case.
To coordinate a visit related to 24 de Diciembre, Climatiza answers inquiries and confirms availability according to the schedule of the place.
- Connecting door with no automatic closer, open every time someone walks through with a part.
- Office return grille on the wall facing the workshop, less than two meters from the door.
- Customer service window open toward the shed all day long.
- Office ceiling not closed above the shared wall: the attic space is shared with the shed.
- Cable and pipe penetrations through the shared wall left unsealed.
Signs on grilles and walls
| Sign | What it indicates |
|---|---|
| Gray film with a metallic sheen on the supply vanes | Welding fumes or grinder dust that passed the filter |
| Sticky residue on the grille that traps dust and does not come off with a dry cloth | Paint or solvent vapor condensed in the cold duct |
| Dark stain on the wall above the connecting door | Fumes enter at the top every time it opens |
| Solvent smell in the office first thing, before the workshop starts | Fumes stayed in the duct overnight |
| Return filter with a silver gray tone within weeks | Fine metal particles in the office air |
What the camera checks
The camera inside the duct is used here to answer a single question: how much of the workshop fumes is already deposited in the office ducts. It enters through the return and travels the first run up to the unit, where the metallic film or paint residue shows clearly on the metal. Then it moves to the supply branch nearest the door and compares it with the farthest one. The photo report states whether the deposit is dry and comes off with mechanical cleaning, or sticky and requires another method. With the 75.7% mean humidity of Panama, according to ETESA, solvent residue on a cold duct is usually damp and compacted.
How to separate workshop air from office air
- Door closer and weather strip on the connecting door. It is the cheapest measure and the one that stops the most fumes. The door stays closed except for the second someone walks through.
- Move or shield the return grille. If the return is on the workshop wall, it is moved to the opposite wall or fitted with a prefilter changed monthly.
- Close the attic space above the shared wall. A gypsum board or sheet up to the shed roof cuts the path of fumes above the ceiling.
- Seal cable and pipe penetrations. Mastic or foam in every hole in the wall. They are small, but with the workshop fan running they pull office air all day.
- Coordinate welding and painting hours. If the tasks with the most fumes are grouped in one time slot and the office keeps the door shut then, the duct receives much less.
Once the airs are separated, the office duct is cleaned once and the camera, the following year, shows whether the separation worked. That is the difference from a plant where process dust is agreed with the maintenance lead: here the workshop owner is the same as the office owner and decides both. Anyone comparing with a tower office with several tenants will see the problem is the same, but with a single person responsible. To place the case within the district see what is checked in 24 de Diciembre workshops and offices.
Those who want to go from this reading to a real review can start at the Climatiza service page or write through the main Climatiza site.
Sources
On this site
- Industry and logistics parksHow the work is organized in this sector
- 24 de DiciembreThe area and its building types
- Camera inspectionThe real condition before deciding
Climatiza and Radar Panamá
Frequently asked questions
Does a bigger exhaust fan in the workshop keep fumes out of the office?
It can make it worse. A powerful fan lowers the shed pressure and pulls office air through the door and cracks, and the office replaces that air by drawing from outside. The fan needs its own air inlet in the shed, away from the office wall.
Does paint residue in the duct come off with normal cleaning?
Not always. If the residue is dry and in a thin layer, mechanical brushing removes it. If it is sticky and mixed with dust, a method with a specific cleaning agent is needed, and in lined flexible duct replacing the run is simpler. The camera settles it before starting.
Is a better filter in the office enough?
No, because solvent vapor passes through any particle filter. The filter holds welding fumes and grinder dust, but paint smell is only stopped by closing the door and sealing the wall. Separate first, then upgrade the filter.
Does the workshop have to stop for the office duct check?
No. The camera enters through the office grilles and the work is done at a time when the workshop is not welding or painting, for example first thing in the morning. The workshop carries on with fume free tasks meanwhile.
Keep reading
Request an inspection
Do you want to know the condition of your system?
A camera inspection lets you see the inside of the ducts before deciding what to do. Message us and we will confirm availability.
- +507 6388-2083
- info@climatizapanama.com
- Calle Gervasio García, 8, Panama City