Equipment under pressure needs special care
The protection of plant operating under pressure and the safety of the personnel operating the plant are not only a matter of concern to management but are requirements by law. The use of bursting discs for this purpose provides an effective and economical solution.
Morganite has developed a range of carbon safety discs which cover working pressures from 0.1 to 84 Kg/cm2 with orifice sizes of 25 mm to 300 mm as standard. Sizes above 300 mm up to 500 mm are special and would be treated as such.
Types 0, 1, 2, 3, 4 and 5 discs have been designed to fit within the bolts of British, American and most continental flanges whilst type 5 discs require larger flanges.
The discs are manufactured out of impregnated graphite in order to achieve the following features:
Important features — your safeguard
Morgan Industrial Carbon’s carbon safety discs are:
- Unaffected by temperature stress effects and are not subject to creep
- Resistant to almost all industrial chemicals even at temperatures as low as —50°C and as high as 200°C
- Will withstand several number of pressure applications at 75% of stated burst pressure without loss of accuracy
- Bursts cleanly allowing maximum escape area
- Easy to install and maintain — plant shut down is thus reduced to a minimum.
Installation - do's and don'ts
- Do ensure that the flange faces are flat, square and parallel to each other and that the pipes are properly aligned
- Do ensure that the flanges and bursting discs or disc components are perfectly clean
- Do ensure that the bursting disc or disc components are installed in the correct direction
- See markings on the discs
- Do ensure that the bolts are evenly pulled up and tightened to the correct torque. (A torque chart will be supplied with a certifi cate of conformance for purchased product)
- Do not use any jointing compound on discs when installing
- Do not use recesses in the flanges to fit over the edge of the disc. This will apply transverse load to the disc if distortion of the piping occurs under pressure. Shrouding of the disc in this fashion also makes it difficult to detect sources of leaks, and makes it difficult to check flanges for flatness. As mentioned above the flatness of the flange face is important