Practice Questions for Certification Training on Safe Operation of Pressure Vessels**

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(Sections of Chapter 1 and Chapter 2) I. Fill in the blanks (2 points for each blank) 1. In the International System of Units, the unit of force is _, the unit of pressure is _, and the unit of temperature is _; the unit of temperature commonly used in daily life is _. 2. The media contained in pressure vessels are classified in accordance with HG20660. Gases that pose toxic hazards are divided into different categories based on the degree of hazard; flammable media are defined as gases whose lower explosive limit when mixed with air is less than %, or whose difference between the upper and lower explosive limits is greater than or equal to %. 3. According to the pressure class of pressure vessels, their type, as well as the toxicity and flammability of the medium involved, the Code on Pressure Vessels classifies pressure vessels into several categories. 4. The main parameters of pressure vessels are , , . 5. The main mechanical properties used to evaluate materials for pressure vessels are , , and . 6. In pressure vessels, low-temperature vessels refer to those with a design temperature below a certain degree Celsius, while high-temperature vessels refer to those with a design temperature above that same degree Celsius. 7. 1 kgf = N, 1 MPa = kgf/cm2, 0℃ = K. 8. A separator designed for a pressure of 1.0 MPa, an operating temperature of 70℃, and a volume of 50 m3, with oil, gas, and water as the separated substances, should be classified as a pressure vessel of category . II. Term Explanations: (5 points per question) 1. Force: 2. Pressure: 3. Maximum operating pressure: 4. Temperature: III. Essay Questions 1. According to the Pressure Vessel Regulations, under what three conditions simultaneously must be met for something to fall within the scope of these regulations? (10 points) 2. List more than three classification methods for pressure vessels (10 points) 3. List the general components of horizontal steel pressure vessels. (8) 4. List several common pressure vessels according to their structure. (6 points) 5. List one type each of the carbon steel, low-alloy steel, and high-alloy steel sheet materials commonly used in steel pressure vessels. (6 points)