Jiangsu Haifa Machinery Manufacturing Co., Ltd.

The nuclear pump is known as the "heart" of a nuclear power plant, this statement is not an exaggeration. For a nuclear power plant, pump equipment undertakes the critical tasks of key medium circulation, heat transfer, and safe system operation. The nuclear pump test rig is like an examination before this "heart" is officially put into operation. Only after verification under high temperature, high pressure, prolonged periods, and complex working conditions can the pump equipment truly enter the engineering site.

Recently, I have a change in industrial sites: robots are beginning to be used for inspections of nuclear pump devices and test rigs. The environment of a nuclear pump test rig is often very complex, with test medium temperatures reaching over 300°C, dense pipelines, confined spaces, and high noise levels. Manual inspections are not only labor-intensive but also involve risks such as high temperature, high pressure, burns, accidental contact, and limited visibility. Public reports also mention that nuclear pump test rig represent an extreme industrial inspection environment characterized by high temperature, pressure, high noise, and high complexity. Traditional manual inspection of a single nuclear pump's entire process typically takes a long time and requires multiple repetitions daily.

In such an environment, inspection robots have clear value. They do not simply replace manual rounds but use high-definition cameras, infrared thermal imaging, sound recognition, instrument reading recognition, vibration monitoring, temperature monitoring, and data transmission to transform inspection tasks that previously relied on human experience into continuous, stable, recordable, traceable data-driven.

For our company, Jiangsu Haifa Machinery Manufacturing Co., Ltd., although we primarily focus on the design and manufacture of API610 chemical process pumps, petrochemical pumps, corrosion-resistant chemical pumps, and high-temperature, high-pressure process pumps, the robotic inspection of nuclear pump devices offers direct inspiration: the future competition in industrial pumps will not only be about whether a pump can achieve the required flow and head but, more importantly, whether it can operate stably over the long term in extreme environments, whether it can be, whether it can be predicted, and whether it can reduce the number of times on-site personnel need to enter hazardous areas.

Nuclear power sites have extremely high safety requirements, and the same applies to chemical sites. Industries such as petrochemicals, coal chemicals, salt chemicals, fine chemicals, metallurgy, power generation, and environmental protection often involve pump equipment operating in high-temperature, high-pressure, flammable, explosive, toxic, highly corrosive, solid-containing, or easily vaporized environments. Examples include high-temperature thermal oil pumps, sulfuric acid pumps, hydrochloric acid pumps, methanol pumps, phenol pumps, diphenyl ether pumps, condensate pumps, high-salt wastewater pumps, liquid sulfur pumps, where the on-site conditions are far from easy. If a pump experiences seal leakage, bearing temperature rise, cavitation, excessive vibration, or unstable outlet pressure, it can affect the operation of the entire system.

The most significant significance of robotic inspection of nuclear pump devices is the shift from "people approaching equipment for inspection" to "equipment status being actively collected." This point is equally important in the chemical pump industry In the past, when evaluating a pump, we mainly looked at performance curves, flow rate, head, efficiency, net positive suction head (NPSH), and motor power. Now, we should pay more attention to temperature, vibration, sound, seal leakage trends, bearing box condition, coupling alignment changes, and pipeline stress effects during pump operation.

From the perspective of a pump manufacturer, intelligent inspection does not exist in isolation Robots can detect anomalies, but the pump itself must have a solid basic design. Otherwise, no matter how advanced the inspection system is, it will only keep issuing alarms without fundamentally improving equipment reliability.

When designing API610 chemical process pumps, our primary focus is on the pump's adaptability to working conditions. Different media, temperatures, pressures, vaporization pressures, and solid content levels impose entirely different requirements on pump type, materials, seals, and bearing structures. API610 and ISO 13709 are important standards commonly used for centrifugal pumps in the petroleum, petrochemical, and natural gas industries. International pump companies typically use API 610 / ISO 13709 as a key design basis for petrochemical process pumps. Taking Jiangsu Haifa's API610 OH2 chemical process pump as an example, we usually select and configure based on customer site parameters:

1. Product type: API610 OH2 chemical pump

2. Applicable industries: Petrochemicals, oil refining, coal chemicals, fine chemicals, salt chemicals, power generation, metallurgy, environmental engineering

3. Execution standard: API 610 / ISO 13709, can be executed according to project technical

4. Flow range Approximately 5–3000 m³/h, based on working conditions

5. Head range: Approximately 10–300 m, can be matched based on hydraulic model

6. Design pressure: 2.5MPa, 4.0MPa, with higher pressure ratings available for special conditions

7. Operating temperature: -80°C to +450°C, determined by materials, seals, and cooling solutions

8. Common materials: WCB 304, 316L, 904L, 2205,2507, CD4MCu,elloy, titanium, etc.

9. Seal types: Single mechanical seal, double mechanical seal, cartridge mechanical seal

-ush plans: API Plan 11, 21, 23, 32, 52, 53, 54, 62, etc.

1. Support types: Foot support or centerline support, determined by temperature and structural requirements

2. Bearing configuration: Heavy-duty bearing box, can be configured with oil bath lubrication, oil mist lubrication, or forced lubrication

3. Applicable media:, alkalis, solvents, oil products, high-temperature liquids, corrosive liquids, flammable and explosive media, partially solid-containing media

For high-temperature media, we focus on pump body thermal expansion, centerline support, bearing box heat insulation, mechanical seal cooling, and hot coupling alignment. For easily vaporized media, we focus on calculating NPSHa and NPSHr to avoid cavitation and flow interruption. For highly corrosive media, we do not simply use the term "stainless steel pump" but instead evaluate whether 316L, 904L, 2205, 2507, Hastelloy, or lined fluoroplastic structures are suitable based on temperature, concentration, chloride ions, pH value, and impurity content.

This aligns with the concept of robotic inspection of nuclear pump devices. Robots focus on on-site conditions, while design focuses on failure sources. One is responsible for detecting problems, and the other for reducing the probability of problems occurring. A truly reliable industrial pump is not one that is repaired after a failure but one that considers cavitation, corrosion, vibration, axial force, seal heat, bearing life, and on-site pipeline conditions during the selection stage.

Currently, intelligent inspection robots are gradually being applied in nuclear power plants, power systems, and high-risk industrial scenarios. For example, some nuclear power projects have already deployed intelligent inspection robot systems to transmit inspection data and enable remote viewing, reducing personnel's on-site trips in harsh environments. Other nuclear-related robots use dual-spectrum thermal imaging, robotic arms, partial discharge sensors, and intelligent recognition technology to complete equipment status checks. These technological trends also hold reference value for the chemical pump industry.

I believe that in the future, users of API610 chemical process pumps will increasingly focus on three issues: First, whether the pump can operate stably under extreme conditions—not just passing short-term tests but maintaining long-term stability in high-temperature, high, corrosive, easily vaporized, and continuous operation environments. Second, whether the pump can be monitored. If data such as bearing temperature, vibration, seal leakage, pump outlet pressure, motor current, and operating noise can be continuously, many failure trends can be detected early. Third, whether the pump can integrate with on-site intelligent operation and maintenance systems. Combining robotic inspections, fixed sensors, DCS systems, cloud platforms, and human experience can truly form predictive maintenance for industrial pumps.

From the side, Jiangsu Haifa Machinery Manufacturing Co., Ltd. also needs to incorporate this thinking into product design and website content expression. When customers see an API610 chemical process pump, they should not only see "flow rate, head, motor power" but also understand how the pump addresses issues such as high temperature corrosion, cavitation, sealing, vibration, maintenance, and long-term operation. For example, under high-temperature conditions, can provide a centerline support OH2 structure to reduce the impact of thermal on coupling alignment high-pressure or critical conditions, we can choose double mechanical seals with Plan 52, Plan 53, or Plan 54 auxiliary systems; under high-salt or highly corrosive conditions, we can choose duplex stainless steel, super duplex stainless steel,elloy, or titanium; under easily vaporized media conditions, we can optimize the impeller inlet design, reduce NPSHr, and recalculate inlet pressure and installation conditions.The inspection robots on nuclear pump devices represent the direction of industrial site intelligence. They show us that equipment management in extreme environments is moving from human experience to data-driven, intelligent, and maintenance. For API610 chemical process pump manufacturers, this is not a distant but a change already occurring in petrochemical, coal chemical, fine chemical, and hazardous medium transport sites. When we produce chemical process pumps, the final delivery is not an isolated mechanical device but a reliable transport solution adapted to on-site conditions. Robotic inspections can help customers detect anomalies earlier, and our task is to minimize anomalies through pump hydraulic design, material selection, mechanical seals, bearing structures, manufacturing precision, and testing verification.

Extreme environments will lower their requirements because manual inspections are difficult, nor will they relax standards because equipment is cheaper. Whether in nuclear pump test rigs or petrochemical plant areas, equipment that is truly recognized by customers ultimately relies on reliability. Jiangsu Haifa Machinery Manufacturing Co.,. will continue to focus on API610 chemical process pumps, high-temperature and high-pressure pumps, corrosion-resistant pumps, and critical condition pumps, providing customers with more suitable products and technical solutions for their sites.

Jiangsu Haifa Machinery Manufacturing Co., Ltd. was restructured from Jiangsu Ligong Group Co., Ltd.'s Jingjiang Stainless Steel Pump and Valve Factory, which was originally established in 1958 under the Central Iron and Steel Research Institute of the Ministry of Metallurgical Industry. The company mainly produces API610 chemical process pumps—OH1 pumps, OH2 pumps, OH3 pumps, OH4 pumps, BB1 pumps, BB2 pumps, BB3, BB4 BB5 double-shell multistage pumps, VS1, VS4, VS5, VS6 barrel pumps, HES-type chemical process pumps, chemical pumps, deep-sea chemical pumps, deep-sea gas-liquid mixing pumps, petrochemical pumps, CQC first-class energy efficiency chemical pumps, sixth-generation ultra-low carbon stainless steel high-quality leak-proof molten urea pumps, urea hydrolyzer feed pumps, high-temperature asphalt pumps, high-temperature sulfuric acid pumps, Pitot tube pumps, rotary jet pumps, low-flow high-head pumps, multistage vortex pumps, high-temperature molten salt pumps, high-temperature nitric acid pumps, vertical sump pumps, magnetic drive pumps, low-temperature liquid hydrogen and methanol pumps, high-pressure liquid hydrogen pumps, low-temperature pumps, high-temperature nitric acid magnetic drive pumps, magnetic drive pumps for solid-containing media, industrial pumps, canned motor pumps, slurry pumps, titanium tetrachloride pumps, self-priming pumps, fluoroplastic-lined pumps, sandwich-lined fluoroplastic pumps, leak-proof pumps, desulfurization and denitrification pumps alkali pumps, pumps, geothermal pumps, oil pumps, axial flow pumps, printing and dyeing pumps, dyeing and finishing pumps, titanium alloy pumps, C-276 material, Hastelloy, 316L material 347 material, forced circulation pumps, fourth nuclear pumps, nuclear island pumps, CCA/IACS marine pumps, filter press-specific pumps, refrigerant pumps, long-shaft vertical sump pumps, high-pressure descaling industrial pumps, Chinese chemical pumps, API610 chemical process pumps, chemical pumps, centrifugal pumps, corrosion-resistant pumps, high-temperature pumps, low-temperature pumps, magnetic drive pumps, vertical sump pumps, double-suction pumps, multistage pumps, first-class energy efficiency pumps, Baidu, 360, Sogou,bao, Douyin, "GB 19762-2025 Energy Efficiency Limits and Energy Efficiency Grades for Centrifugal Pumps," Dun & Bradstreet certification.  
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