Weir SPM - Maintenance and Repair Procedures; General Maintenance Practices; Recommended Service Intervals; Product Vessel Testing

Document P/N: 2A43495
Release Date: 02/27/2018
Revision: IR
15 of 16
WARNING: DISASSEMBLY UNDER PRESSURE CAN CAUSE SERIOUS BODILY INJURY, DEATH,
OR PROPERTY DAMAGE.
Always Remember:
1. Always wear PPE (personal protective equipment).
2. Only qualified technicians should perform maintenance on SPM
®
products.
3. Always use SPM
®
supplied new parts kit for reassembly.
4. Clean all components thoroughly prior to reassembly.
5. Check sealing surface area for pitting, erosion or other flaws.
6. Use only SPM
®
parts on SPM
®
products.
7. This device is intended to discharge atmospherically when it relieves.
Maintenance Requirements:
Weir recommends that the rupture disc be removed from service after 250 working hours or 100 stages,
whichever comes first.
Vessel Test Procedures:
Prior to shipment, product testing procedure 4S12497 requires that each rupture disc body pass a one-time
vessel test at 150% it’s rated working pressure; then, when conducting subsequent vessel tests on used
housings, limit the pressure to 100% of rated working pressure as required by 4S12497.
Housings should always be vessel tested in accordance with product testing procedure 4S12497. Utilize the
correct dummy seat for the appropriate size (2" - 2P42526, 3" - 2P42280). During the vessel testing the O-
ring and hex nut shall be used.
SECTION IV: Maintenance and Re
p
ai
r
Dummy Seat
2" - 2P42526
3" - 2P42280