Regarding the labeling and management of daily blind flanges: how should 8-character blind flanges be labeled, and is it necessary to use labels for them?

1. Do people think it’s necessary to have a sign? For plug-in type blind plates, there is no need to attach a label; however, ordinary blind plates require a label to be attached. (Note: The most important thing is that whether it is an 8-character blind plate or a regular blind plate, a detailed record sheet for its removal and installation must be maintained.) 2. If a tag is used, should the removal date or the installation date be indicated on the back side? For the 8-character blind flanges here, no labels are used; for ordinary blind flanges, it is necessary to establish and improve the relevant procedures first, and then write down the specific times of removal and installation on the front side of the label. 3. How is the management of blind plates handled on everyone’s equipment? (This refers to normal production conditions): Install warning signs and establish comprehensive electronic records. 4. Do you think it’s necessary to keep a ledger for blind plates? (During the inspection, pointing to blind plate number 10 in the record sheet, it is required that the status indicated in the record sheet match the actual location and status; otherwise, a penalty of 300 will be imposed.) This is very important – sometimes some installations overlook this aspect and end up forgetting to remove or install the blind plates when starting up or shutting down operations.

1. Do people think it’s necessary to have a sign? For access points, blind flanges at these locations do not require labeling. Unless it is an old installation, blind flanges on newly installed devices are generally required to be of the 8-shaped type, with bolts of appropriate length and gaskets that meet the specified standards. 2. If it is listed, should the back side indicate the demolition date or the installation date? If it is determined that listing is necessary, it’s best not to specify a date; however, since this does not meet the standards, it’s better not to list at all. 3. How is the management of blind plates handled on everyone’s equipment? (Referring to normal production conditions,) after a blind flange is installed, it should be recorded promptly in the blind flange management ledger, ensuring that details such as its location, size, and pressure rating are accurate. This provides essential information for later calculations regarding tasks like valve replacement as well as installation and removal operations. As a result, it becomes easier to prepare the necessary materials for maintenance, and these tasks can be carried out on a regular basis, thus avoiding mistakes that might occur under pressure at the last minute. 4. Do you think it’s necessary to keep a ledger for blind plates? (During the inspection, pointing to blank plate No. 10 in the record sheet, it is required that the status indicated in the record sheet match the actual location and status; otherwise, a fine of 300 will be imposed.) This is very necessary, as blank plates are a matter of great importance. Have there not been many accidents in the past due to improper installation of blank plates or their absence? Therefore, during routine inspections, ensuring that the status of the blind flanges on site matches the records kept for them can significantly reduce the workload and improve safety. Thus, I support everyone in recognizing the seriousness and importance of blind flange management.

1. Do people think it’s necessary to have a sign? Regular seats: No signs for regular seats; signs are placed at the blind seats for registration. 2. If it is listed, should the back side indicate the demolition date or the installation date? No listing. 3. How is the management of blind plates on everyone’s equipment handled? (It refers to the registration on blind position tags under normal production conditions, with dynamic management.) 4. Do you think it’s necessary to keep a ledger for blind plates? (During the inspection, pointing to blind plate number 10 in the record sheet, it was required that the status indicated in the record sheet match the actual location and status; otherwise, a fine of 300 would be imposed.) This is absolutely necessary – the records must correspond to the actual situation.

1. Do people think it’s necessary to have a sign? It is definitely necessary to attach labels; for some thin blind plates, if no labels are used, they can easily be mistaken for gaskets, which may result in blockages in the pipelines and other systems. 2. If it is listed, should the back side indicate the demolition date or the installation date? Generally, the time when the blind plate is installed is recorded; when the blind plate is removed, the label attached to it is simply taken off. 3. How is the management of blind plates handled on everyone’s equipment? (Referring to normal production conditions) Assign numbers and keep a ledger for the isolation valves. 4. Do you think it’s necessary to maintain a ledger for the isolation valves? It’s definitely necessary; in some of the current accident investigations, they check the records related to the installation and removal of blind flanges, and that’s also part of avoiding liability, isn’t it? :lol

1. Do people think it’s necessary to have a sign? For access points, blind flanges at these locations do not require labeling. Unless it is an old installation, blind flanges on newly installed devices are generally required to be of the 8-shaped type, with bolts of appropriate length and gaskets that meet the specified standards. 2. If it is listed, should the back side indicate the demolition date or the installation date? If it is determined that listing is necessary, it’s best not to specify a date; however, since this does not meet the standards, it’s better not to list at all. 3. How is the management of blind plates handled on everyone’s equipment? (Referring to normal production conditions,) after a blind flange is installed, it should be recorded promptly in the blind flange management ledger, ensuring that details such as its location, size, and pressure rating are accurate. This provides essential information for later calculations regarding tasks like valve replacement as well as installation and removal operations. As a result, it becomes easier to prepare the necessary materials for maintenance, and these tasks can be carried out on a regular basis, thus avoiding mistakes that might occur under pressure at the last minute. 4. Do you think it’s necessary to keep a ledger for blind plates? (During the inspection, pointing to blank plate No. 10 in the record sheet, it is required that the status indicated in the record sheet match the actual location and status; otherwise, a fine of 300 will be imposed.) This is very necessary, as blank plates are a matter of great importance. Have there not been many accidents in the past due to improper installation of blank plates or their absence? Therefore, during routine inspections, ensuring that the status of the blind flanges on site matches the records kept for them can significantly reduce the workload and improve safety. Thus, I support everyone in recognizing the seriousness and importance of blind flange management.

Actually, this relates to the unit’s regulations regarding the management of blind flanges! Here, we basically implement a registration system for blind plates, especially those at boundary areas!

1. Do people think it’s necessary to have a sign? For access points where no sign is installed, our policy is to collect the blind plate tags after removing the blind plates, using them as proof that the blind plates have been removed. 2. If it is listed, should the back side indicate the demolition date or the installation date? Not listed. 3. How is the management of blind plates handled on everyone’s equipment? (Referring to normal production conditions) A blind plate register should be maintained during normal production, and the register must be updated promptly whenever there are changes to the blind plates. 4. Do you think it’s necessary to keep a ledger for blind plates? (During the inspection, pointing to blind plate No. 10 in the record sheet, it is required that the status indicated in the record sheet match the actual location and status; otherwise, a fine of 300 will be imposed.) This is necessary.

1. Do people think it’s necessary to have a sign? Regarding the identification label: I personally think it’s necessary to put a label on it to indicate its status; otherwise, people will forget about it over time. 2. If a label is used, should the back side indicate the date of removal or the date of installation? This record should be kept in a specialized ledger for the installation and removal of blind flanges. 3. How are blind flanges managed on everyone’s equipment? (Referring to normal production conditions) Under normal circumstances, a label is attached to each blind flange, and these labels have uniform numbers; the time, location, person who installed them, and other details are recorded in a dedicated ledger for blind flanges. 4. Do you think it’s necessary to keep such a ledger for blind flanges? (During the inspection, point to blind plate number 10 in the record sheet; only if the status indicated in the record matches the actual location and status is it considered acceptable, otherwise a fine of 300 will be imposed.) This is absolutely necessary.

It seems everyone still doesn’t agree? Are there any existing regulations and standards that can be used as a reference?

HG 30012-2013 Safety Specifications for Blind Flange Opening and Closing Operations in Production Areas