Page 448 - APPLIED PROCESS DESIGN FOR CHEMICAL AND PETROCHEMICAL PLANTS, Volume 1, 3rd Edition

414 Applied Process Design for Chemical and Petrochemical Plants

pre-assembly
screw pressure
gauge

holddown __

rupture disc -

base :"

Figure 7-SJ. Exploded view of double disk assembly. Usually burst
pressure is same for each disk. Used for corrosive/toxic conditions
to avoid premature loss of process and at remote locations. Note
the use of tell-tale between disks. By permission, Fike Metal Prod-
ucts Div., Fike Corporation, Inc.
r- W' NPT CONDUIT CONNECTION Figure 7-SL. Rupture disk indicator alarm strip breaks when rupture

disk breaks and alarms to monitor. FM system approved. By per-
�:ff � ---- - 1 �
/ mission, Continental Disc Corporation.
� iURSTINDICATORUNIT
...............
_._._..__P_
!
".:: ELECTRICAL
CONNECTIONS
Figure 7-SK. Rupture disk with burst indicator. Several other tech-
niques available. By permission, Fike Metal Products Div., Fike Cor-
poration, Inc.

Rupture Disks

Rupture disks are available in:

1. Practically all metals that can be worked into thin
sheets, including lead, Mone), nickel, aluminum, sil-
ver, Inconel, 18--8 stainless steel, platinum, copper,
Hastelloy and others.
2. Plastic coated metals, lead lined aluminum, lead
lined copper. Figure 7-SM. Ultrex® Reverse Acting Rupture Disc providing instan-
3. Plastic seals of polyethylene, Kel-F®, and Teflon® taneous full opening, non-reclosing. By permission, Continental
4. Graphite, impregnated graphite or carbon. Disc Corporation.