I think there are some issues with the operating instructions for filling in the isolation fluid; please help take a look

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This post was last edited by Wang Tianze on 2016-4-7 23:12. Operating Instructions for Refilling the Flush Oil in Transmitters 1. Purpose of the operation: In transmitters with a flush oil system that are in operation, inaccurate readings may occur due to issues such as minor blockages in the pressure sampling ports or freezing of the pressure transmission lines; in such cases, it is necessary to refill the instrument with flush oil. 2 Task requirement: The pressure of the flushing oil must be higher than the pressure of the instrument medium in order to carry out the flushing oil operation. 3 Task content: Fill the instrument flushing oil. 4 Job Preparation and Hazard Identification 4.1 The operators consult with the process team, issue the appropriate work orders based on the instrument circuits and type of work, and implement the safety measures required by those work orders ； Conduct hazard identification and carry out HSE analysis. 4.2 Operators shall wear the appropriate tools and equipment; in the case of smart transmitters, a corresponding handheld terminal is necessary, and appropriate protective gear should be carried depending on the conditions at the site. 4.3 When operators perform flushing with oil under pressure, it is strictly prohibited to release pressure or discharge waste fluid. 4.4 Operators are strictly prohibited from removing the flushing oil pipelines and related facilities. 4.5 A bucket must be used when discharging waste; pay attention to nearby high-temperature equipment and pipelines to prevent sudden outflows, and discharging waste inappropriately is strictly prohibited. 5 Operation method: 5.1 Before starting the operation, the operator checks the operating condition of the instruments and records the values indicated by the transmitters. 5.2 The operators first inspect the appearance of the instruments and pipelines; work can proceed only if no issues are found. The operator first shuts down the transmitter, then closes the positive pressure valves of the three valve assemblies in sequence, opens the balance valve, and closes the negative pressure valve. The transmitter indication should return to zero; when measured with a multimeter, it reads 4mA. Otherwise, open the positive and negative exhaust valves of the transmitter, observe, and make adjustments. Close the positive and negative exhaust valves of the transmitter (ask Manager Jia – these exhaust valves are not those for the isolation tank). Open the main flushing oil valve, and then open the positive and negative secondary flushing oil valves respectively. Observe the indication of the flushing oil pressure gauge; if the flushing oil pressure drops rapidly, the pressure tap or pressure lead pipe is in good condition. Then close the positive and negative secondary valves for the flushing oil, as well as the main valve for the flushing oil. Start the table. The operator must observe the transmitter’s indication for 1 minute to check whether it is normal. (If the instrument does not respond during the above operations, identify the cause and resolve the fault.) ) 5.3 If the instrument readings remain abnormal after injecting flushing oil, the cause should be investigated for that instrument in order to resolve the fault. 6 Inspection and acceptance: 6.1 After the instrument operators have completed their work, it is necessary to verify that the instrument readings are normal, that the valve positions are correct, and that there are no leaks in the pressure lead pipes. Then submit it for process confirmation before commissioning, and sign on the work order. 6.2 After the work is completed, all tools and materials should be removed and the site cleaned up. 7 Requirements and precautions for putting instruments into use: When installing instruments, it is necessary to close the main flushing oil valve as well as the positive and negative secondary valves, and check for any leaks in the pressure guiding system.