Re: PIping Trivia

> ======================================================
>
> Q> Fugure 8 (spectacle blind) and paddle type blanks & spacers -
when do we use
> them?
>
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>
> Ans>
> Figure 8 flanges are used for positive isolation of the lines
[during shutdown]
> where we suspect some valves to pass the fluid which may cause
hindrance to the
> work in the downstream of the valve. This is a safety point.

It is relatively easy to see from a distance a figure 8's position (open or closed). With a paddle blind, not so easy.

Paul Received on Thu Oct 11 21:01:00 2001