Across nearly all industries today, the use of measuring instruments to monitor and control process parameters is imperative. To ensure measurement accuracy and maintain errors within permissible limits, these instruments must undergo initial, routine, or periodic verification and calibration. This practice is essential to mitigate operational risks, minimize downtime costs, and prevent accidents during the operation of machinery and production lines.

Service Background

• Verification: A technical activity conducted according to established procedures to evaluate and confirm the conformity of products or goods with specific technical regulations. Verification is mandatory by law. Instruments that meet the requirements are issued a verification stamp or a legally valid Verification Certificate by State management agencies or designated competent bodies.
• Calibration: The process of establishing a relationship between a measurement standard and a measuring instrument to determine errors and other metrological characteristics. Calibration is not mandatory. Based on the calibration results, the end-user determines the instrument's fitness for purpose in their specific operations.

Mandatory Verification & Calibration Categories

1. Inspection of machinery, equipment, materials and substances subject to strict occupational safety and health requirements
(In accordance with Circular No. 36/2019/TT-BLDTBXH)

• Boilers of all types and thermal oil heaters
• Systems of pipelines for vapour and hot water
• Pressure vessels
• Storage tanks, cisterns, and containers for LPG, CNG, and liquefied gases
• Refrigeration systems
• Bridge cranes, gantry crane, semi-gantry cranes
• Electric and manual hoists
• Forklifts and aerial work platforms (Man-lifts)
• Escalators and elevators of all types
• Passenger ropeway systems
• Winches and hoisting axles
• ...

2. Verification of medical equipment
(In accordance with Decree No. 07/2023/ND-CP amending Decree No. 98/2021/ND-CP)

• Ventilators
• Anesthesia machines with ventilators
• Electrosurgical units (ESU)
• Infant incubators
• Defibrillators
• Hemodialysis machines

3. Verification of electrical equipment and tools
(In accordance with Circular No. 33/2015/TT-BCT)

• Transformers
• Circuit breakers
• Surge arresters
• Disconnecting switch, earthing switches
• Electrical cables
• Insulating poles

4. Verification of lightning protection and grounding resistance in accordance with Decree No. 136/2020/ND-CP

5. Verification of Measuring Instruments (Group 2)
(In accordance with Circular No. 03/2024/TT-BKHCN)

• Analytical balances and technical balances
• Gas gauges (of LPG, industrial, and civil gas)
• Pipettes
• Pressure gauges, sphygmomanometers (blood pressure monitors), and medical thermometers
• ...

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