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P&ID symbol for Internal Fire Safety Valve with Fusible Link

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tsenne

Chemical
Mar 20, 2006
2
Ia anyone aware of a P&ID symbol for an internal fire safety valve, like the Protectoseal 3000 or Morrison Figure 272? It is a normally-open spring-loaded valve with a fusible link that holds it open. Installed on a nozzle at bottom of flammable material AST. Haven't found anything applicable in ISA or PIP.
 
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You can define a symbol yourself on the legend front page
 
Here's a symbol from a company that used to install Greenwood QCV's on LPG tank outlets. Also a fusible link from another company's PID standard. A motor-operated valve symbol with TSE instead of M on the box might work.
Screen_Shot_2024-09-22_at_5.50.48_PM_qel20v.png
Screen_Shot_2024-09-22_at_6.01.18_PM_d0q8ue.png


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