2 replies to this topic

[black friday]

Hi All,

I'm looking for some help. I have a few PSVs on site that are below 50 kPag. As I recall 50 kPag is the minimum pressure where the valves are governed by AS1271 requiring a 5 yearly or less service and being considered code safety devices.

However I can't for the life of me remember where exactly in which AS this is stated. Could anyone clarify this matter for me, as I've had no luck trawling through the copies I have and i'm starting to lose my mind from reading to many standards.

Any help would be much appreciated.

Cheers.

[black friday]

No one?

[astro]

AS 1210 (ca. 2010), 1.3 Application, Paragraph (a) states

This Standard is intended to apply to pressure vessels— 

(a)   with design pressures above the curves in Figures 1.3.1 and 1.3.2 for welded, forged, brazed or cast metallic vessels or non-metallic vessels unless otherwise agreed by the parties concerned; and ...

 

Figure 1.3.1 addresses vessels subject to internal pressure, where the 50kPag criteria appears. Note that this pressure should be taken as Design Pressure &/or Maximum Allowable Working Pressure. If the container has a DP below the threshold then AS1210, doesn't apply and (I suspect) that AS1271 may not apply either. I'll leave that to you to confirm, as I'm not across that detail.