Procedure for cleaning air ducts from alanpoe's blog

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Ducts are channels or pipes through which air circulates. They are a constructive element of ventilation systems that provide indoor conditions suitable for life and work. But the air contains suspended particles of dust, dirt and even microbes. All this settles on the walls of the air ducts, which leads to a narrowing of their clearance. The result is a decrease in thrust, stagnation of air and the creation of conditions hazardous to health. In order not to bring ventilation to such a state, its channels must be cleaned at regular intervals established by law. Check out more about NJ Monmouth County air duct cleaning at the our website.

Ventilation and law

Since people's health largely depends on the state of ventilation in residential and working premises, the law strictly controls all related processes:

  • design;
  • mounting;
  • cleaning;
  • repair.

The measures to be taken to maintain the normal operation of ventilation are defined by the articles of the Federal Law No. 52 of March 30, 1999 “On the sanitary and epidemiological well-being of the population”. Their non-compliance threatens with the onset of civil liability. This law is supplemented by Government Decree No. 390 dated April 25, 2012 “On the fire regime”. It establishes the terms for cleaning ventilation and prohibits the use of flammable and flammable liquids for this.

Stages of cleaning ventilation systems

Ventilation cleaning is carried out in four 4 stages:

  1. inspection of the system to determine the causes of impaired air exchange.
  2. Drawing up a list of works necessary to restore normal air exchange.
  3. Execution of work according to the plan.
  4. Evaluation of the effectiveness of completed work.

Attention! According to regulations, ventilation must be cleaned within 30 days after its inspection .

Ventilation system inspection

The survey includes:

  • study of technical documentation;
  • verification of the conformity of the system to the project;
  • visual inspection for visible damage;
  • measurement of microclimatic parameters and their comparison with established standards.

After completion of the examination, a conclusion is drawn up. It reflects the actual state of the ventilation system, which determines the procedure and types of work to clean it.

Drawing up a work plan

The plan usually includes the following steps:

  1. Choice of cleaning method.
  2. Choice of cleaning products.
  3. Mathematical calculation of the expenditure of these funds.
  4. Collection of cleaning equipment. At the same stage, equipment is prepared to equip the ventilation system, if necessary, to restore or increase its efficiency.
  5. Announcement on the timing of the work.
  6. Dismantling of individual elements of the ventilation system.
  7. Cleaning and disinfection of canals.
  8. Reassembly of the system, installation of previously selected equipment.
  9. Preparation of documentation and registration of entries in the journal.
  10. Checking the effectiveness of work.

The list of works may vary depending on the characteristics of the object, the type of ventilation and the degree of its contamination.

Cleaning procedure

Cleaning of air ducts is carried out in the following order:

  1. Preparation of cleaning agents.
  2. Calculation of the cost of funds for each of the ventilation sections.
  3. System preparation. Dismantling of air intakes, grilles, covers and other elements that interfere with cleaning.
  4. Channel cleaning.
  5. Cleaning of regulating mechanisms (they are not subject to dismantling).
  6. Cleaning filters, their treatment with a disinfectant composition.
  7. Fan cleaning.
  8. Cleaning of heat exchange elements.
  9. Cleaning the drainage system with preliminary removal of the trays.
  10. Cleaning of mixing chambers from the inside.
  11. Cleaning of air conditioners.

The final step is drying the cleaned surfaces. They are collected dry.

Performance analysis

Cleaned ventilation should not have visible contamination. Samples taken from various parts of its inner surface should not contain pathogenic microbes. The system should ensure the formation of indoor microclimate necessary to maintain people's health.

Performance analysis includes:

  • visual inspection of the system;
  • microbiological examination of samples taken from filters, heat exchangers, trays and other ventilation elements;
  • laboratory and instrumental tests to check quality compliance with established standards;
  • comparison of air inflow and outflow (they must be equal).

When checking, it should be borne in mind that different standards are established for different types of objects. If the survey results match them, that's it. If during the check of the system violations were detected, a second cleaning is carried out.


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By alanpoe
Added Apr 28, 12:21PM

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