rupture disc & PSV combo need same set pressures?
rupture disc & PSV combo need same set pressures?
(OP)
an engineering firm is proposing PSD/PSV combination with the rupture disc (PSD) under the relief valve (PSV).
their planning to set the PSD less than MAWP and have the PSV set at MAWP.
i thought it was an ASME issue to have them set at the same pressure but am having trouble finding it and it may just be a practice that i have seen.
note that the PSD & PSV are in series and are not in parallel.
tia,
their planning to set the PSD less than MAWP and have the PSV set at MAWP.
i thought it was an ASME issue to have them set at the same pressure but am having trouble finding it and it may just be a practice that i have seen.
note that the PSD & PSV are in series and are not in parallel.
tia,





RE: rupture disc & PSV combo need same set pressures?
Good luck,
Latexman
RE: rupture disc & PSV combo need same set pressures?
RE: rupture disc & PSV combo need same set pressures?
RE: rupture disc & PSV combo need same set pressures?
RE: rupture disc & PSV combo need same set pressures?
RE: rupture disc & PSV combo need same set pressures?
Good luck,
Latexman
RE: rupture disc & PSV combo need same set pressures?
52 "Use of a rupture disk device in combination with a pressure relief valve shall be carefully evaluated to ensure that the media being handled and the valve operational characteristics will result in opening of the valve coincident with the bursting of the rupture disk."
This type of installation is extremely common.
RE: rupture disc & PSV combo need same set pressures?
You want the RD and the PSV to actuate at the same time, which not always means identical set points