C5.5 Pressure systems Flashcards
Definition of a pressure system
a system comprising one or more pressure vessels of rigid construction, any associated pipework and protective devices
Examples of pressure systems
autoclaves boilers compressed air systems heat exchangers refrigeration plant pressure gauges
What are the regs that cover pressure system
Pressure Systems Safety Regs 2000
Reg 8
only use if written scheme of periodic examination has been drawn up by a competent person
only applies to system where pressure of system multiplied by volume of the pressure system is above 250 bar litres
Reg 9
examinations to be carried out by competent person
Reg 4
requirements of pressure system design
designed / constructed of suitable material
designed / constructed so can be examined
means of access to the interior without danger
protective devices provided to prevent danger and release contents safely
Factors in the design of pressure systems
expected life of equipment
need for examination
adequate sized openings to permit internal exam
means to undertake exam of vessels with small interiors
conditions of operation
system performance requirements
how to deal with abnormal start and shutdown conditions
controls / protective devices to prevent abnormal conditions
measuring devices, eg gauges for pressure, temp
allow for corrosion
suitable pipework to allow for expansion / contraction
What do Pressure Equipment Reg 1999 cover
supply of pressure equipment
requirement for CE marking
apply to all equipment above 0.5 bar
Reg 13
repairs or mods to pressure systems
must not give rise to danger
Repair & mod considerations
original design spec
use of the system after repair / mod
change in fluids used
effects of repairs / mods on system integrity
whether previous protective equipment still adequate
Reg 5
information & marking
provide written info ref design, construction, examination, operation, maintenance
prevents removal of any info marking or plate
Adequate info to provide ref pressure systems
safe operating limits certs of conformity scheme of examination design pressures and temps design standards construction materials intended contents intended flow rates capacity
Required pressure vessel markings
manuf name serial number date of manuf standard to which the vessel is built max allowable pressure min allowable pressure where this is other than atmospheric design temp
Reg 16
requires CE marking
Reg 14
results of inspections must be recorded and stored
