Hog Technologies SK5500, Operation Manual

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Section 2 - Stripe Hog Systems
Typical 50,000 PSI (3,447 BAR) Rupture Disc
On Manual Bypass Valve
Rupture Discs
There are two rupture discs installed on the high
pressure side of the UHP pump that protect the
high pressure water blasting system against un-
usually high spikes in pressure. The rupture discs
are designed to burst and immediately relieve
pressure if the water pressure in the ultra-high
pressure system exceeds the disc burst rating.
One rupture disc is set to rupture or burst at a
higher psi than the other, typically 50,000 psi
(3447 BAR) for one disc and 56,000 psi (3861
BAR) for the other. This design is a safety feature
to ensure both rupture discs do not burst at the
same time which could damage components in
the ultra-high pressure system. The burst rating
for each rupture disc is calculated based on 1.25
times the maximum operating pressure of the UHP
system and 1.4 times the maximum operating
pressure of the UHP pump.
Never operate the system without the properly
rated rupture discs installed. If a rupture disc
bursts it will have to be replaced prior to resum-
ing water blasting operations. (Refer to Rupture
Disc Replacement Procedure in the maintenance
section of this manual). Always find and correct
the problem that caused the rupture disc to burst
before reactivating the machine. Test the high
pressure circuit at low pressure after replacing
a rupture disc to verify proper system operation
before resuming high pressure operations.
WARNING
EXCESSIVE PRESSURE IN THE HIGH PRESSURE BLASTING
SYSTEM CAN CAUSE EXTENSIVE DAMAGE TO EQUIPMENT
AND SEVERE INJURY OR EVEN DEATH TO PERSONNEL.
IF A RUPTURE DISC BURSTS IT USUALLY INDICATES A
PROBLEM THAT NEEDS TO BE CORRECTED BEFORE
WATERBLASTING OPERATIONS CAN RESUME. NEVER
INSTALL RUPTURE DISCS WITH A HIGHER BURST RATING
THAN RECOMMENDED.
Typical 56,000 PSI (3,861 BAR) Rupture Disc
On UHP Manifold
Rupture Discs