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VFD and starter P&ID symbols
Anyone out there knows what symbols to use for a VFD and for a magnetic starter in a P&ID?- raduval
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- Replies: 3
- Forum: Programmable logic controllers (PLC)
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Caustic + abrasion
I am using Hardwear 400F in a caustic (pH=14) and heavy abrasion application, in the chemical industry (dissolving of sodium silicate). The equipment handles a caustic solution of sodium silicate and water. It is lined with the Hardwear and runs at temps btwn. 250 and 400 deg. F. Hardwear 400F...- raduval
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- Replies: 2
- Forum: Metal and Metallurgy engineering
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PV de-rating
We are running some 30+ year old PV (VIII-1). One of them is getting thin (shell thickness under min. value for MAWP)> I 'm thinking about de-rating the vessel to a lower MAWP. How do I go about doing this ? Your help would be greatly appreciated !!- raduval
- Thread
- Replies: 23
- Forum: Boiler and Pressure Vessel engineering
