Refrigeration installation verification procedure

Abstract

The invention entitled: Procedure for checking refrigeration installations is characterized in that: - checks, tests and samples at the periodic control due date (RI - internal inspection + IP - pressure test) in order to extend the operating authorization at IMSP - mechanical installations under pressure - containers and pipes for fluids within industrial refrigeration installations are carried out with the refrigeration installations in working condition, in operation, without being emptied and stopped from operation with working fluid at working pressure; - it is not necessary to stop and empty the refrigeration systems during checks, tests and samples; - checks, tests and samples are carried out based on technical documentation - Specific Instructions which present in logical sequence by stages - operations and phases the sequence of checks, tests and samples for periodic control upon maturity in order to extend the authorization and operation. Checks are made in a separate loop on each separate refrigeration and freezing refrigeration system. From the refrigeration plant (A) to the compressor group (C), the distributor (D) and the discharge pipes (CR) up to the oil separator container (SU) are checked and non-destructively controlled - the oil container (U) is checked and non-destructively controlled by ISCIR authorized non-destructive testing laboratories (VT - visual test, PT - liquid penetrant testing, MT - for ferromagnetic steels, UT - ultrasonic thickness, UTs - ultrasonic circular butt welds and longitudinal to containers with g ≥ 4 mm, fluid pipes from the oil separator to the condenser Cc.1, check and non-destructively control the pipes from the condenser to the liquid tanks (L), check and control the fluid pipes from the liquid tanks (L) to consumers, evaporators, vaporizers, and from consumers: evaporators, vaporizers, check and non-destructively control the fluid pipes on the compressor suction side (CA) and oil separator container to the compressor suction, from the monitoring panel (M) and from the automation panel (PA), from the pressure gauges and pressure transducers, check and install, note pressures and temperatures on the compressor discharge and suction and oil pressures. If the non-destructive testing laboratories have an ADMITTED result and if the minimum measured thicknesses are greater than the minimum allowed resistance thickness, the refrigeration installation inspection report (A) and the annex are drawn up in which the measured and recorded pressures and temperatures are recorded. In the conclusions chapter for each container and fluid pipe, the technical characteristics at which they can operate safely and at which the operating authorization can be extended are specified. Declarations of conformity are issued, all documents will be approved by RADTE - responsible for approving technical expertise documentation. The advantages offered by the invention and the presentation of the technical problem that the invention solves: - It is not necessary to stop, empty the refrigeration system, dismantle the components of the containers and pipes, reassemble the components by sealing and by operation. - It is not necessary to take the refrigeration system out of operation for a period of 25 days 3 months. - Checks, tests and samples are performed with the refrigeration system in working condition - in a distinct loop. - The duration of these checks, non-destructive controls, tests, samples is reduced to 2 - 3 days. - The technical condition of the pressure equipment and the refrigeration system is assessed, technical reports and declarations of conformity are issued.

Description

[0001] 12.2 Description of the invention with the title

[0002] Refrigeration installation verification procedure

[0003] Determining technical characteristics of the invention - parameters, constituent parts, connecting elements

[0004] Refrigeration installations with freon

[0005] Refrigeration capacities: 700kW, various

[0006] Tmax<30 bar; TVOrking< 28 bar

[0007] Tmin - 10 + 12 °C to refrigeration

[0008] Tmin- 36 40 °C when freezing

[0009] Tmax 120 + 150OC

[0010] Fluid: freon; R404A; R134; 5.0.

[0011] - Constituent parts under pressure

[0012] Containers with volume < 8001,

[0013] Pressures p > 0,5 bar

[0014] Tmin- 12°C to refrigeration

[0015] Tmin- 4(PC when freezing

[0016] Tmax < 180°C

[0017] Pipes for fluids: connecting elements: DN < 250 mm

[0018] - Refrigeration installations with CO2

[0019] Refrigeration capacities

[0020] 500 + 800 kW - various - refrigeration

[0021] 250 500 kW various - freezing

[0022] Refrigeration installations with CO2 :

[0023] Technical characteristics parameters

[0024] P max < 130 bar ; P maxworking 120 bar

[0025] Tmin < - 12°C to refrigeration; Tmin <- 40°C when freezing

[0026] Containers with volume < 4001 connecting pipes DN < 250 mm

[0027] Working parameters:

[0028] High pressure system MT: 100 bar

[0029] Intermediate pressure (tank MT): 60 bar

[0030] CO2 gas outlet temperature from the Gas cooler +40°C

[0031] Evaporation temperature MT (Booster A; Booster B) - - 6°C; - 10oC

[0032] Evaporation temperature LT

[0033] Booster A; Booster B: - 36°C; - 26° 12.2. - continuation

[0034] MT (refrigeration) ; LT (freezing)

[0035] Maximum permissible pressure LT Ps45 / 30 bar

[0036] Allowable system temperature MT: Tmin / Tmax = -10oC / +15CPC

[0037] Allowable system temperature LT: Tmin / Tmax = -50°C / +150°C

[0038] - Refrigeration installations with ammonia

[0039] Technical characteristics - Parameters

[0040] - Various refrigerating capacities - on refrigerant temperatures

[0041] 600 kW - 5°CNH3

[0042] 1092 kW - 12°CNH3

[0043] 252 kW - 36°C NH3

[0044] Intermediate refrigerant: propylene glycol in concentration of 35%

[0045] - Various refrigerating capacities

[0046] 650 - 800 kW- - 8°C

[0047] 550 + 700 kW- - 2°C

[0048] 130 + 200 kW 4O°C (heating)

[0049] - Technical characteristics - Technical Parameters maxworking 16 bar refrigeration; Tmm<- 36°C when freezing Fluid ammonia

[0050] Intermediate refrigerant: propylene glycol 35%

[0051] Containers with volume V < 18000 1; various

[0052] Connecting pipes DN < 350 mm

[0053] Condensation system: Evaporation Condensation temperature: max. +35 °C Vaporization temperature

[0054] - 36°C lower level

[0055] - 12°C medium level

[0056] - 5°C high level

[0057] The principle of refrigeration:

[0058] NH3 pumping system for - 36°C; - 12°C; - 5 °C

[0059] NH3 pumping system for glycol - 8°C; +2 °C and heating + 40°C

[0060] Constituent parts, connecting elements Components required for proper operation, protection and safety

[0061] - At refrigeration installations with freon and CO2 12.2. - continuation

[0062] - 3 to 5 refrigeration compressors for refrigerating and freezing circuits, as well as 2 auxiliary refrigeration compressors for regulating the intermediate pressure and vapor compression of the liquid tank

[0063] - oil management system; oil separator, oil tank, oil regulators

[0064] - suction mounted liquid separators

[0065] - liquid sub-coolers

[0066] - liquid reservoir of suitable size for the application, including independent safety cooling unit

[0067] - shut-off and control valves

[0068] - safety valves for overpressure protection on the low pressure, medium pressure and high pressure side

[0069] - electrical command and control panel

[0070] - heat recovery unit including connected plate heat exchangers with electrically operated 2-way and 3-way shut-off valves

[0071] Each refrigeration circuit includes at least 1 compressor with frequency converter.

[0072] The installation is continuously adjustable - continuous adjustment. The high pressure stage is regulated according to the temperature of the refrigerant and the high pressure in the system by means of an electrically and mechanically actuated high pressure control valve (reserve)

[0073] Driving the technological process through programmable controller with parameter settings and monitoring.

[0074] Constituent parts, connecting elements

[0075] Components required for proper operation, protection and safety, interconnections in the ammonia refrigeration plant

[0076] - Low stage compressor (screw)

[0077] - Medium stage compressor (screw)

[0078] - High stage compressor (screw)

[0079] - Evaporation condenser

[0080] - Water pumps for condensation

[0081] Thermosiphon vessel

[0082] - Separator - 5°C; -12°C; -36°C.

[0083] . NH3 Pumps

[0084] Plate heat exchangers

[0085] - NH3 Cooler

[0086] The rest of the refrigeration plant is supplied with intermediate refrigerant. The coolant is propylene glycol 35%

[0087] Structure:

[0088] - Circuit expansion vessels: +40 °C; + 2°C; - 8°C

[0089] - Circuit glycol pumps: +40 °C; + 2°C; - 8°C ntinuation

[0090] Glycol coolers: room + 20°C; refrigeration room - 8°C

[0091] - Air heaters

[0092] Automation and monitoring plant with continuous adjustment. A specially designed Controller - processing control micro unit - is mounted on each compressor assembly.

[0093] This consists of: starting and stopping the compressors, adjusting the capacity, monitoring the operating conditions, activating the acoustic and optical alarm if an abnormal situation occurs.

[0094] Each set of screw compressors shall be equipped with:

[0095] Oil separators, safety valve, service flaps, oil heater, oil pump, oil cooler, thermos-siphon, suction shut-off, suction filter, safety valve on discharge, regulating valve, oil filter, transducer for suction, discharge and oil pressure

[0096] - Temperature sensor for: suction, discharge and oil temperature

[0097] The control unit mounted on each compressor assembly ensures:

[0098] Compressor capacity control

[0099] Start-stop procedure control

[0100] - Numerical display of the instantaneous values of the operating parameters

[0101] Option for automatic or manual control

[0102] - Ability to transmit data ification of the technical field to which the invention refers

[0103] - The food industry

[0104] - Refrigeration cooling installations in breweries (with ammonia)

[0105] - Refrigeration plants in the dairy industry - dairy products

[0106] - Refrigeration installations in the meat and sausage industry

[0107] - - refrigeration; of freezing

[0108] - Cold stores for vegetables and fruits

[0109] Cold stores of sweets

[0110] - Multinational logistics warehouses with refrigeration and freezing facilities

[0111] Cold stores with cold rooms for refrigeration, freezing at hypermarkets, XXL shops

[0112] Cold stores from slaughterhouses

[0113] - Supermarkets, Stores with cabinets and refrigerated display cases 12.2. - continuation

[0114] 3. Specifying the current state of the art

[0115] The current state of the art provides for periodic checks, tests, tests for the safe operation of refrigerating installations, which include pressure vessels, connecting pipes, safety accessories - pressure, temperature, level limiting devices (oil, refrigerant) automation (metrological checks transducers, sensors). AMCs - measuring and control equipment - metrological checks, safety valves, monitoring - in order to assess their technical condition for safe operation

[0116] The current state of the art provides that at CP - periodic control at maturity (RT + IP) RI — internal review; IP - pressure tests of pressure vessels and pipes for pressurized fluids that are components of refrigeration installations, to carry out the checks, hydraulic and / or pneumatic pressure tests on each pressure vessel and pipe independently, so isolated, if possible, removed from the refrigeration plant, dismantled and emptied.

[0117] State-of-the-art testing and testing involve performing tests - hydraulic tests with water and / or performing pneumatic strength and tightness tests with air or nitrogen on each container or pipeline that has been dismantled, removed from the installation and emptied.

[0118] If the tests and samples are ADMITTED, i.e. they were done with good results, these containers and pipes are to be reassembled and installed in the refrigeration plant from which they were dismantled, and then the sealing of the plant, the tests and the commissioning are to be done.

[0119] So, at the current state of the art, the refrigerating plants must be shut down, taken out of operation and emptied, dismantled, and then after checks, tests and tests, reassembly, installation and commissioning of the refrigerating plants. At the same time, at the current state of the art, it was not possible to perform hydraulic tests and tests with water, at refrigeration installations with freon, with CO2, with ammonia as a whole because the refrigeration installations are contaminated and can no longer be used.

[0120] 4. - Presentation of the technical problem that the invention solves

[0121] The invention is characterized in that:

[0122] It is not necessary to stop and empty the refrigerating plant, so taking the refrigerating plant out of operation (for a period of 25 - 30 days, and in the case of complex refrigerating plants in logistics warehouses, taking it out of operation for a period of 2 -5- 3 months.

[0123] The tests, samples, checks are performed with the refrigeration installations in working condition with working fluid at working pressure, in a separate loop, so once for all containers and pipelines under pressure that are part of the separate refrigeration or freezing loop. 12.2. - continuation the duration of time for these checks is substantially reduced from 1 ^- 2 months to 2

[0124] 3 days, the period of time during which the checks, samples, tests are made. After these checks, samples, tests with GOOD results, ADMITTED, the technical condition of each container and pipe is evaluated according to the manufacturing number, - Year of manufacture, Characteristics and technical parameters with their recording in the technical reports with a chapter of conclusions signed by the staff specialist technician RADTE - The technical responsible for approving the technical documentation of technical expertise - technical investigations / examinations - of the ISCIR authorized company for technical investigations / examinations. With the issuance of technical reports, declarations of conformity are also issued according to the requirements of the applicable technical prescriptions PT, ISCIR and the applicable Euro-norms.

[0125] 5. Disclosure of the invention as claimed

[0126] Refrigeration installation verification procedure - procedure - refrigeration installation verification method, presentation of the logical sequence of stages that characterizes the procedure with the presentation of the conditions of deployment of the parameters and technical means used.

[0127] 5.1. Stage 1 - Establishing the constructive parts of pressure containers (oil separator containers, oil containers, liquid phase containers, refrigerant after the condenser), connecting pipes to separator containers, to oil containers, condensers, liquid phase tanks, connecting pipes to consumers - vaporizers, evaporators, cold rooms refrigeration, freezing, refrigerated showcases, refrigerated cabinets and low pressure pipeline system - suction compressors from consumers to oil separator containers, oil tanks, filters, fittings, security accessories, safety valves - group suction compressors, automation and monitoring system.

[0128] Identification by stamp plate, construction technical books, operational technical books, builder's drawings, refrigeration schemes of the pressure part with p > 0.5 bar, pressure vessels and piping system and pressure piping with: name, determined characteristics, technical characteristics: pressure, volume, temperature, Tmin, Tmax, in °C, Dx- nominal pipe diameter, pipe length, essential characteristics determined in order to evaluate the technical condition.

[0129] Verification No. of manufacture, year of manufacture, ISCIR registration number, the agreement between the technical data - characteristics - parameters on the stamp plate and the data in the technical operation and construction books, checking safety valves, fittings, security accessories, AMCs, measurement and control equipment, automation, monitoring, set parameters.

[0130] 12.2. - continuation Checks are carried out at the periodic control at the due date CP (RI - internal review + IP - pressure test) in order to assess the technical condition in order to operate safely for the extension of the AF - authorization of operation at the periodic control at the due date.

[0131] 5.2. Non-destructive control using the specialized method

[0132] - VT

[0133] - UTg

[0134] - UTS

[0135] - MT

[0136] - PT

[0137] Metallographic replica

[0138] Macrostructure control in SITU

[0139] We present in detail these non-destructive tests on the method - the control specialty.

[0140] VT - visual testing 100% - visual control

[0141] UTg- ultrasonic pressure control, according to the sheets

[0142] UTS- ultrasonic control of welds

[0143] MT - magnetic control test - with magnetic powders for ferromagnetic steels

[0144] PT - control with penetrating liquids, being also an alternative to MT

[0145] Control by the metallographic replica method in order to check the macrostructure, according to the applicable Euro reference standard - when there are reasonable suspicions regarding the need to check the macrostructure

[0146] - Microstructure control in situ - with a portable microscope - when there are reasonable suspicions to check the microstructure.

[0147] 5.2.1. During the visual control carried out by VT control operators, certified according to the applicable Euro norm and / or authorized by ISCIR, it will be checked

[0148] - The condition of the surfaces of the pressure vessels (belts, bottoms, connections, supports) and of the pressure pipes (pipes, connections)

[0149] Checking the base material (pipes, sheets) to ensure that there are no bumps, deformations, cracks, exfoliation, leaks - the applicable Euro norm reference for sheets, pipes, equipment under pressure: containers and pipes for pressurized fluids

[0150] Inspection of circular, longitudinal and comer butt welds - for quality level B according to SR EN 5817

[0151] - Verification of dimensional and shape deviations according to SR EN 6520

[0152] The results of the VT check and control will be recorded in a visual control bulletin with the record of the result ADMITTED or REJECTED with the mention

[0153] 12.2. - continuation References to VT and applicable Euro norm SR EN ISO 17637:2011 + SR EN 5717:2015 + SR EN 5717:2015

[0154] Examination techniques + quality level + acceptance level

[0155] The references that establish the respective quality level SR EN 5817:2015, are the same that also establish the discontinuity acceptance level, Weld quality level B. Examination level not specified.

[0156] 5.2.2. UTg thickness measurements according to the non-destructive control bulletin and measurement sheets

[0157] Examination method SR EN 14217;2011

[0158] Examination technique + quality level + acceptance level

[0159] The minimum thickness, measured, will be compared with the minimum thickness calculated in the resistance calculation breviary, establishing the control result

[0160] It is checked that there is no corrosion, exfoliation, unacceptable dimensional deviations.

[0161] 5.2.3. Ultrasonic control of welds using the UT specialty method where the thickness of the base material is > 8 mm and where the thickness of the base material is within the range 4 -^ 8 mm

[0162] SR EN ISO 17640:2011 + SR EN 5817:2015 + SR EN 11666:2011

[0163] Examination technique + quality level + acceptance level 2

[0164] B welds B

[0165] 100% circular and longitudinal butt welds are checked to detect discontinuity, and volume defects, in the depth of the material

[0166] The control results are recorded in a UTs non-destructive control report with the related UTs measurement sheet, with the ADMITTED / REJECTED result

[0167] 5.2.4. Control A / T - Magnetic Test, with magnetic powders to detect possible discontinuities and defects in the approximation of the surface at a depth of 2,5 ^ 3,5 mm

[0168] Control is done with the magnetic yoke and / or permanent magnets at circular, longitudinal, comer, butt welds.

[0169] The MT control is done on ferromagnetic materials according to MT 100%.

[0170] SR EN ISO 17637:2011 + SR EN 5717:2015 + SR EN 23275:2015

[0171] Examination technique + quality level + acceptance level B 2x

[0172] The control result is issued on the MT non-destructive control report with measurement sheets MT.

[0173] 5.2..5. - Penetrating liquid PT non-destructive testing of materials that cannot be magnetized and which can be magnetized on cleaned surfaces

[0174] 2.2.- continuation

[0175] PT control - specialized method according to SR EN ISO 3452-1 :2013, 2,3:2014 + SR EN 5817:2011 Examination techniques + quality level B + SR EN 23277:2015; PT control 100% acceptance level 2 X

[0176] The control results are recorded in the PT non-destructive control report and in the measurement - control sheet PT

[0177] All non-destructive checks will be carried out in compliance with the conditions of performance according to the method examination technique - specialty VT, UTg, UTs, MT, PT of the parameters and technical means used with metrological verification:

[0178] Thickness measuring device

[0179] - Ultrasonic welding control device UTS

[0180] - Magnetic yoke for control MT

[0181] Permanent magnets for control MT

[0182] Control standards PT

[0183] 6. Design code PT ISCIR Applicable, Documentation, documents we refer to

[0184] AD 2000 Regelwerk (AD Merkblatt - German norm

[0185] Specific technical applications

[0186] EN 378 (DIN EN 378) and applicable EN- Refrigeration Systems

[0187] SR EN 13445-1 + 6 / 2003 Non-flammable pressure vessels

[0188] SR EN 13450-1 + 5;2003 Metallic industrial pipes

[0189] Technical prescriptions - ISCIR collection: PTC4 - 2C / C / Containers,

[0190] PTC6 - 2010 Metallic industrial pipes for fluids.

[0191] The technical book for the construction of containers and pipelines under pressure with No. of manufacture, Year of manufacture, technical characteristics, with drawing, assembly drawing, specifications, technical memorandum, Operating instructions, Risk analysis, SSM and PCI instructions.

[0192] - Technical operation book, type ISCIR of containers and pipes under pressure.

[0193] The project of the refrigerating plant in which the containers and pipes under pressure are embedded as a component part - constituents - with functional description, role of equipment, diagram of the refrigerating plant

[0194] Specifications

[0195] - Technical report

[0196] - Operating instructions

[0197] - Risk analysis

[0198] Essential security requirements

[0199] - SSM and P C.I. Instructions

[0200] Checks fittings, security accessories, automation and monitoring installation 12.2.-continuation

[0201] 7. After carrying out non-destructive checks and controls -with Good - Accepted results it is checked:

[0202] Good functional condition of fittings, safety accessories, condition of sensors, transducers, controllers, devices and programmable controllers, process conductors with set parameters, condition of safety valves, condition of AMCs - measuring and control devices in the plant and AMCs from the automation and monitoring panel.

[0203] The security accessories and AMCs must be metrologically checked in time, the refrigeration plant must be connected to the grounding belt with a TRAM check report, the safety valves must have a check report - annual adjustment. The automation and monitoring installation is checked with the agreed related functions, protections, regulation, signaling, monitoring and the result of the check is recorded

[0204] - It is checked if they are exposed: diagram of the refrigeration plant, operating instructions, SSM and PCI, warning plates: dangerous workplace, entry of foreigners strictly prohibited, check of gas security sensors with three optical and acoustic alarm levels, good condition and functional of the system.

[0205] 8. Checks, tests, trials. Records, Archiving

[0206] If these checks have been done with good results - Admitted, it is possible to proceed to carrying out the checks, samples and tests of the refrigerating, freezing installations, in separate loops.

[0207] The set parameters and working parameters are checked and their existence within the limits set by the refrigeration plant project, specifications, technical memorandum.

[0208] The tightness of the refrigerating installation is checked with a portable gas leak detector with metrological verification for Freon, CO 2, ammonia NH3. We proceed to the verification, the pressure test sample of the refrigerating installation, the pneumatic pressure test with working fluid at working pressure, at pneumatic tightness test with working fluid, at working pressure.

[0209] The parameters on the high pressure circuit are checked and recorded on compressor discharge - visualized on AMCs installation, panel AMCs, Monitoring - refrigeration freezing parameters

[0210] Discharge compressors, intermediate liquid phase

[0211] P compressor suction (bar), working temperatures - refrigeration in the range - - 4 + - 12°C, freezing temperatures — 20 + - 36oC (-40°C), oil pressure, resistance test with working fluid at working p (bar) 15 min, leak test with working fluid at working p (bar) 60 minutes, the tightness of the refrigerating installation is checked, of containers and pipes with gas and foaming liquid leak detector, a test report is issued, with the recording of the parameters. The technical expert issues a technical report and declaration of conformity with the assessment of the technical condition of each container and pipe with the specifications of the AF for the characteristics. 12.2. -continuation

[0212] Description of the invention with the title

[0213] Refrigeration installation verification procedure

[0214] In support of the invention we present concrete examples of implementation

[0215] Concrete examples of making the invention according to Annex 1

[0216] Date: 07.07.2024

[0217] Signature

[0218] - Report Nr. 1714 / 12.12.2023

[0219] Technical documentation / Specific instructions for CO2 refrigeration installations -

[0220] Selgros Baia Mare Nr. 1554 / 12.12.2023

[0221] Report for the pneumatic tightness test at the refrigeration plant - CO2 refrigeration plant - Selgros Baia - Mare - PV. No. 1715 / 12.12.2022

[0222] Minutes for the test pressure test of the CO2 refrigerating installation from Selgros Baia - Mare PV - No. 1716 / 12.12.2023

[0223] - Appendices PV No. 1716 / 12.12.2023 with the test pressures of Refrigeration Installations Rack A, Rack B, Rack C

[0224] - Minutes of receipt of works - checks of refrigeration installations PV No.

[0225] 1712 / 12.12.2023

[0226] Signed and taken over by Selgros Baia Mare and RSVTI

[0227] 2. Refrigeration installation verification procedure from ARTIMA Brasov - Carrefour Market Brasov ONI - 6 pages

[0228] - Minute No. 1677 / 26.11.2023

[0229] Delivery and receiving document

[0230] 3. Procedure for checking CO2 refrigeration installations from Hypermarket Pantelimon — Bucharest - Cora Pantelimon — 5 pages

[0231] - Minute No. 1632 / 16.11.2023

[0232] Delivery and receiving document

[0233] 4. Verification procedure, tests, counter-tests at the CO2 refrigeration plant at the Carrefour Hypermarket Park Lake Bucharest.

[0234] - Minute No. 1629 / 16.11.2023

[0235] Delivery and receiving document dated 16.11.2023

[0236] 5. Minutes No. 1583 / 25.10.2023 related to Procedure — from the verification of the refrigeration plant at Carrefour Brasov 1.

[0237] The number of examples can go on and is very high for refrigeration installations from logistics warehouses VDT Bucharest, Focsani, refrigeration installations from Kaufland Romania with freon and CO2, Mehr Romania, Auchan Romania. 12 4 Drawings

[0238] Patent application

[0239] Refrigeration installation verification procedure

[0240] - Explicit drawing with presentations, additions, explanations Figure 1

[0241] - Operating diagram of a refrigeration system with FREON Distinct loop

[0242] The drawing shows the group of refrigeration compressors, of which one compressor is with a frequency converter, the circuits were presented - the high-pressure compressor discharge pipe systems, the oil separator container, the oil container, the condensers - the liquid tank, AMCs - measuring and control devices, piping system to consumers (evaporators, vaporizers, cold rooms, refrigerated display cases) and the low pressure piping system from consumers to suction compressors.

[0243] The refrigeration plant is equipped with security accessories (pressure switches, pressure transducers, temperature regulators, level regulators, programmable controllers, automation and monitoring, AMCs ensuring the parameters set according to the needs of the owner - user.

[0244] The refrigeration plant operates in an automatic cycle with continuous adjustment ensuring the set temperature according to the needs of the owner - the user.

[0245] Checks, tests and samples are made with the refrigeration plant in operating condition in distinct loops, the test being made at the operating pressure of the refrigeration plant with working fluid at working pressure, with the recording of the parameters displayed on the AMCs - measuring devices and control and monitoring

Claims

2. 3 Claims- related to the patent application entitledRefrigeration installation inspection procedureTechnical characteristics - Main parametersDetermined, determining characteristics - Essential requirementsIt is presented in the description of the invention for:Refrigeration systems with freon- Refrigeration systems with CO2- Refrigeration systems with ammonia NH3- The invention entitled: Procedure for checking refrigeration installations is characterized in that: checks, tests and samples for periodic control at the due date are made with the refrigeration systems in working condition, in operation with working fluid at the working pressure in a distinct loop- it is not necessary to stop and empty the refrigeration systems for checks and tests; following the checks, tests and samples, non-destructive controls with good results - ADMITTED, technical reports are issued for each container and fluid pipe separately, specifying in the conclusions, the parameters at which the operation authorization can be extended.Claims1. Exclusive right of use, benefit during the validity period of the patent2. I request that any third party not use the invention without first obtaining the consent of the inventor - the owner of the invention3. The consent of the inventor as owner will be granted only in written form by concluding a contract with the third party for each separate use.

4. I request protection of the invention according to the legislation in force5. The rights and exclusivity are requested from the date of registration with OSIM for the entire validity period of the invention - the patent.

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