[Q&A] 3/20/2017

(1) Check to confirm whether the pressure gauge is sensitive, clogged, or damaged. (2) Check whether the temperature indication is accurate. (3) Check whether the safety valve attached to the tower is leaking, stuck, or if its components are loose. (4) Check whether the tower foundation has sunk or developed cracks, and whether the bolts are loose. (5) Check whether the insulation of the tower and its associated pipeline valves is damaged or has come loose. (6) Visually inspect the valve packings and pipe flanges of the pipelines attached to the tower for any leaks. (7) Visually inspect, listen, and feel the auxiliary pipeline supports to check for looseness and whether the pipelines are vibrating. (8) Check whether the high-pressure bolts of the tower body and associated pipelines are corroded; anti-corrosion grease should be applied regularly. (9) The rates of heating, cooling, pressure increase, and pressure decrease must be carried out in strict accordance with the regulations ； For those with a catalyst, the catalyst must not be exposed to excessive temperatures, to avoid a decrease in its activity and accelerated aging. (10) During the production of high-pressure tower equipment, bolts must not be tightened under pressure, nor must the safety valves be adjusted. (11) For corrosive media, it is necessary to conduct timely analysis and adjust process parameters promptly to prevent severe corrosion of the equipment. (12) The tower should be shut down in any of the following situations. 1) The pressure exceeds the allowable level; the pressure cannot be reduced even without shutting down the tower, or the pressure gauge is malfunctioning and it is not possible to determine the pressure inside the tower ； 2) Failure of the system safety valve ； 3) Cracks appear in the main components of the tower, or there is air or water leakage ； 4) Other situations occur where continued operation is not permitted according to the safety rules.

1) During the operation of the tower, it is not allowed to exceed the temperature or pressure limits. 2) Safety accessories should be inspected regularly and must be flexible and reliable. 3) Regularly check for leaks at sealing points such as manholes, valves, and flanges. 4) Regularly check the operation of the stressed components

1) During tower operation, overheating and overpressure are not allowed.   2) Safety accessories should be inspected regularly and must be flexible and reliable.   3) Regularly check for leaks at sealing points such as manholes, valves, and flanges. 4) Regularly check the operation of the stressed components. 5) Operate within the elastic range of operation.

1. During the operation of the tower, it is not allowed to exceed the temperature or pressure limits； 2. Regularly inspect safety accessories; they should be flexible and reliable ； 3. Regularly check for leaks at sealing points such as manholes, valves, and flanges ； 4. Regularly check the operation of the stressed components.

(1) Check to confirm whether the pressure gauge is sensitive, clogged, or damaged. (2) Check whether the temperature indication is accurate. (3) Check whether the safety valve attached to the tower is leaking, stuck, or if its components are loose. (4) Check whether the tower foundation has sunk or developed cracks, and whether the bolts are loose. (5) Check whether the insulation of the tower and its associated pipeline valves is damaged or has come loose. (6) Visually inspect the valve packings and pipe flanges of the pipelines attached to the tower for any leaks. (7) Visually inspect, listen, and feel the auxiliary pipeline supports to check for looseness and whether the pipelines are vibrating. (8) Check whether the high-pressure bolts of the tower body and associated pipelines are corroded; anti-corrosion grease should be applied regularly. (9) The rates of heating, cooling, pressure increase, and pressure decrease must be carried out in strict accordance with the regulations ； For those with a catalyst, the catalyst must not be exposed to excessive temperatures, to avoid a decrease in its activity and accelerated aging. (10) During the production of high-pressure tower equipment, bolts must not be tightened under pressure, nor must the safety valves be adjusted. (11) For corrosive media, it is necessary to conduct timely analysis and adjust process parameters promptly to prevent severe corrosion of the equipment. (12) The tower should be shut down in any of the following situations. 1) The pressure exceeds the allowable level; the pressure cannot be reduced even without shutting down the tower, or the pressure gauge is malfunctioning and it is not possible to determine the pressure inside the tower ； 2) Failure of the system safety valve ； 3) Cracks appear in the main components of the tower, or there is air or water leakage ； 4) Other situations occur where continued operation is not permitted according to the safety rules.

(1) Check to confirm whether the pressure gauge is sensitive, clogged, or damaged. (2) Check whether the temperature indication is accurate. (3) Check whether the safety valve attached to the tower is leaking, stuck, or if its components are loose. (4) Check whether the tower foundation has sunk or developed cracks, and whether the bolts are loose. (5) Check whether the insulation of the tower and its associated pipeline valves is damaged or has come loose. (6) Visually inspect the valve packings and pipe flanges of the pipelines attached to the tower for any leaks. (7) Visually inspect, listen, and feel the auxiliary pipeline supports to check for looseness and whether the pipelines are vibrating. (8) Check whether the high-pressure bolts of the tower body and associated pipelines are corroded; anti-corrosion grease should be applied regularly. (9) The rates of heating, cooling, pressure increase, and pressure decrease must be carried out in strict accordance with the regulations ； For those with a catalyst, the catalyst must not be exposed to excessive temperatures, to avoid a decrease in its activity and accelerated aging. (10) During the production of high-pressure tower equipment, bolts must not be tightened under pressure, nor must the safety valves be adjusted. (11) For corrosive media, it is necessary to conduct timely analysis and adjust process parameters promptly to prevent severe corrosion of the equipment. (12) The tower should be shut down in any of the following situations. 1) The pressure exceeds the allowable level; the pressure cannot be reduced even without shutting down the tower, or the pressure gauge is malfunctioning and it is not possible to determine the pressure inside the tower ； 2) Failure of the system safety valve ； 3) Cracks appear in the main components of the tower, or there is air or water leakage ； 4) Other situations occur where continued operation is not permitted according to the safety rules.

Site hygiene, corrosion and insulation protection, regular wall thickness testing

The main aspects of daily maintenance for tower equipment are as follows. (1) Check to confirm whether the pressure gauge is sensitive, clogged, or damaged. (2) Check whether the temperature indication is accurate. (3) Check whether the safety valve attached to the tower is leaking, stuck, or if its components are loose. (4) Check whether the tower foundation has sunk or developed cracks, and whether the bolts are loose. (5) Check whether the insulation of the tower and its associated pipeline valves is damaged or has come loose. (6) Visually inspect the valve packings and pipe flanges of the pipelines attached to the tower for any leaks. (7) Visually inspect, listen, and feel the auxiliary pipeline supports to check for looseness and whether the pipelines are vibrating. (8) Check whether the high-pressure bolts of the tower body and associated pipelines are corroded; anti-corrosion grease should be applied regularly. (9) The rates of heating, cooling, pressure increase, and pressure decrease must be carried out in strict accordance with the regulations ； For those with a catalyst, the catalyst must not be exposed to excessive temperatures, to avoid a decrease in its activity and accelerated aging. (10) During the production of high-pressure tower equipment, bolts must not be tightened under pressure, nor must the safety valves be adjusted. (11) For corrosive media, it is necessary to conduct timely analysis and adjust process parameters promptly to prevent severe corrosion of the equipment. (12) The tower should be shut down in any of the following situations. 1) The pressure exceeds the allowable level; the pressure cannot be reduced even without shutting down the tower, or the pressure gauge is malfunctioning and it is not possible to determine the pressure inside the tower ； 2) Failure of the system safety valve ； 3) Cracks appear in the main components of the tower, or there is air or water leakage ； 4) Other situations occur where continued operation is not permitted according to the safety rules.

(1) During the operation of the tower, overheating and overpressure are not allowed. (2) Safety accessories should be inspected regularly and must be flexible and reliable. (3) Regularly check for leaks at sealing points such as manholes, valves, and flanges. (4) Regularly inspect the operation of pressure-bearing components