The act of pressure testing of the heating system is an important document, which is the result of hydraulic testing and a guarantee of the normal functioning of one of the main life support systems of Russians in the cold season.
FILES
In what cases is
The act is required for:
- Commissioning of new equipment. The act will confirm that each element is in its place, the installation was carried out responsibly, the system is working.
- The onset of the heating season. After a summer break in operation, the pipes could fail. After checking them bandwidth and an act is drawn up.
- already carried out repair work Oh.
- The occurrence of stopped emergency situations on the pipeline. Experts thus reveal the volume necessary work, weak spots existing heating network.
For the uninterrupted operation of the heating system, control preventive checks are necessary, reliable information about the quality functioning of the system at startup.
Who produces
Private individuals never carry out pressure testing of the heating system on their own, as this is associated with a health risk. Crimping requires specific skills and knowledge.
Therefore, to carry out a heating check, they turn to specialized organizations. It could be a heating company. A service company also has the right to carry out such work if its staff has a specialist with suitable education and skills.
The essence and types of crimping
Now heating is most often carried out by a "water circuit" system. At the same time, heated water circulates through the works, imparting its thermal energy to the premises. Leaks are unacceptable, the pipeline must be completely sealed for normal operation. Crimping, on the other hand, specifically creates a volume in the pipe that is larger than normal.
When this is done with the help of air, it is called pneumatic pressing.
When using water, then hydropressing. The latter method is considered safer and therefore more popular. For this reason, an example of hydropressure is given as a blank.
When testing, it is recommended not to exceed the pressure inside the pipe by more than 15 MPa. When it comes to raising pressure with water, then there are limitations. The maximum possible pressure should not exceed the usual working pressure by more than 30%.
In multi-storey buildings, they resort to pneumatic pressure testing if the pipes are very old and there is a possibility of flooding. But then there is a level of risk and all residents should be notified of the tests being carried out.
The work process is simple, but multi-stage. The algorithm looks like this:
- Getting ready necessary materials and equipment.
- Draining the liquid that was in the heating system earlier.
- Uploading a new one.
- Creating the highest possible test pressure.
- Removal of control measurements in 10 minutes.
- Flushing, adjustment of the heating system to normal pressure inside.
- Documentation of the work performed, the formation of reports and acts.
But the list of procedures looks like this only if there are no “thin spots” in the heating system and, accordingly, the tightness in it is not broken. If the pressure drops quickly, does not hold, then the system needs to be repaired. In such a situation, the specialist performs necessary actions(replacing pipes, sealing connections, cleaning, etc.), and then starts pressure testing from the very beginning. Only a heating system that has passed the test is admitted to the heating season.
An important nuance! Pressure testing should be carried out after cleaning and flushing the pipes. Otherwise, salt and other deposits inside them can mask possible external damage and breakthroughs.
If there are deposits of the order of 1 cm on the inner surface, then this reduces the overall heat transfer and efficiency by 15 percent or more of the general indicators. To document the cleaning, a special act is also drawn up.
Is paper mandatory
The given form and sample are an example, a recommended form for drawing up an act, but by no means a mandatory document for all. Perhaps, in some cases, other options for fixing the work being done to check utility systems will be more convenient. By the way, also, by hydraulic testing, the hot water supply system is checked.
Components of the act of pressure testing of the heating system
At the top left, information about the organization that conducted the check is indicated. Ideally, there should be a signature for approval by the chief power engineer of the heat supply organization.
At the top right should contain information about the subscriber. That is, who is the client and consumer of heating services. This may be a partnership of residents of a particular house, some organization that occupies the building, the owner of a private house, etc.
It is important that names and other information be accurate and detailed. In this case, an address is required.
The main part of the act states:
- City.
- The number of signing the act (and the crimping itself).
- Heat supply organization: its form of ownership, name, full name of the representative.
- Which of the representatives of the subscriber carried out the acceptance of the heating system after the test: full name, position.
- To what indicators the pressure in the system was raised, kgf / cm2 are indicated.
- To what indicators did it fall after 10 minutes following the shutdown (the units of measurement here are also kgf / cm2, it is also permissible to measure it in MPa if there are accurate data on this).
- The system passed or did not pass the test (the filler needs to underline the correct option).
The final part consists of signatures and seals (if any) of representatives of:
- Subscriber.
- Heat supply organization.
- Service organization.
In general, the act of pressure testing of the heating system is a convenient primary document, the completion of which is the responsibility of the heat supply organization.
Form IGASN No. 21/01
Act
acceptance of the heating system
We checked and accepted the heating system for the effect of the action at the address: ____________________
________________________________________________________________________________________________________________
(administrative district, quarter, street, house and building number, purpose of the object)
and installed:
1. The heating system is installed in accordance with the design and regulatory technical
documentation and tested according to the design and requirement of SNiP 3.05.01-85 hydraulic
pressure on ... atm. (see act dated "__" _____________).
2. The expansion vessel is installed in the central heating station (ITP) in building No. ___ in accordance with the project,
isolated and provided with automatic make-up.
3. Automated node control (AUU) (when connecting the building through the central heating station) mounted
and operates in accordance with the project and regulatory and technical documentation and provides
coolant parameters corresponding to the temperature chart and design pressures.
4. Thermostatic automatic valves for heating appliances are installed in accordance with
with the project and have temporary protective caps or thermocouples (heads). In case of non-installation
thermoelements (heads) for the period of acceptance of the heating system, an agreement was presented with a specialized
organization No. ___ dated _______ on acceptance for storage and subsequent installation of thermoelements (heads).
5. In a two-pipe heating system, installation adjustments have been made on thermostatic valves
valves to the positions corresponding to the design values for each room.
6. If there are balance valves on the sectional units and risers of the heating system,
installation adjustment of valves to positions corresponding to the design values for each riser.
7. Checking the effect of the operation of the entire heating system as a whole (with installed thermostatic
elements) showed that at the outside air temperature Tn = _____ deg. C, supply temperature
water at the control nodes Tk = ___ deg. C, temperature return water That \u003d ___ deg. C, circulation
pressure ___ m, while all devices of the heating system had uniform heating. Temperature during
internal premises amounted to ___ hail. C. Based on inspection and testing
The heating system presented for delivery is considered accepted for operation.
