Saturday 20 February 2016

Pressure Testing of Chilled Water Piping System

Pressure Testing of Chilled Water Piping System:

  1. The Chilled water piping shall be tested according to the system working pressure i.e. 1.5 times the working pressure. and/ or PN ratings of the pipes, pipe fittings and valves used in the piping.
  2. The piping may be tested in sections or total, depending on site requirements and as per consultant advice.
  3. Estimate the piping volume and make arrangement for required quality of clean water.
  4. Arrange for temporary piping/ hose pipe connections for filling and draining water.
  5. Fix the temporary valves at air vent/ drain points and pressure gauges.
  6. Fill the piping system with clean water through a temporary pump and obtain the test pressure if no leakage is observed.
  7. If leakages are observed, arrange the leakage immediately. If leakages are major, isolate the leaking portion with nearest isolating valve and/ or stop the water filling.
  8. Rectify the leakages and again fill with water until no leakages throughout the entire piping system is observed.
  9.  After no leakage is observed pressurize the system using hydraulic test pump up to full pressure.
  10. During pressurization observe the joints and entire piping system for leakages.
  11. Observe the pressure gauges readings for 4 hours and sure that there is no drop in gauge pressure. System pressure to be 1.5 times than the actual working pressure.
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4 comments:

Gilsulate International, Inc. said...

It is very useful information. Thank you.
Chilled Water Distribution
Pipeline Cathodic Protection

24 August 2019 at 11:12
Unknown said...

160psi after 24hrs, 150psi how percentage drop is that?

Can you show me a computation

10 November 2021 at 10:02
Unknown said...

How many percentage drop is that? Can you show me a computaion? Tahnk you

10 November 2021 at 10:03
SEA Global Electromechanical Works said...
This comment has been removed by the author.
26 April 2024 at 11:16

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HVAC is the technology of indoor and vehicular environmental comfort. Its goal is to provide thermal comfort and acceptable indoor air quality. HVAC system design is a subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics, and heat transfer. Refrigeration is sometimes added to the field's abbreviation as HVAC&R or HVACR, (heating,ventilating and air-conditioning & Refrigeration) or ventilating is dropped as in HACR (such as the designation of HACR-rated circuit breakers). HVAC is important in the design of medium to large industrial and office buildings such as skyscrapers, onboard vessels, and in marine environments such as aquariums, where safe and healthy building conditions are regulated with respect to temperature and humidity, using fresh air from outdoors. Ventilating or ventilation (the V in HVAC) is the process of "exchanging" or replacing air in any space to provide high indoor air quality which involves temperature control, oxygen replenishment, and removal of moisture, odors, smoke, heat, dust, airborne bacteria, and carbon dioxide. Ventilation removes unpleasant smells and excessive moisture, introduces outside air, keeps interior building air circulating, and prevents stagnation of the interior air. Ventilation includes both the exchange of air to the outside as well as circulation of air within the building. It is one of the most important factors for maintaining acceptable indoor air quality in buildings. Methods for ventilating a building may be divided into mechanical/forced and natural types.