RISK ANALYSIS
Bounderies of the installation (risk analysis) against the proper (legal) background : / Reference:Rev.:Date:
Manufacturer:
On behalf of manufacturer:Signature:
No / Type of hazard / 1)
Rele-vant
Y / N / 2)
Risk estima-tion by / Description of hazard / Risk
No. / Action
Required
Y / N / If applicable: risk reduction by / 4)
Explications
Action number
Design / Use
3)
Construction / Reduction / Additional precautions / Warning
1 / Internal pressure
-normal operating conditions
-regeneration conditions
-thermal liquid expansion
-exothermal reactions/run away
2 / External pressure
-vacuum
-normal operating conditions
-regeneration conditions
-condensing steam/vapour due to cooling down
3 / Ambient temperature
4 / Design temperature
-normal operating conditions
-margin between operating and design temperature to small
-regeneration conditions
-exothermal reactions
-to small responstime of temperature sensors
5 / Temperature changes
-temperature gradiënt
6 / Creep
7 / External fire
(pool, jet)
8 / Static head of the content under operating and test conditions
9 / Dynamic liquid pressure
(waterhammer)
-Condensation of gasous fluids
10 / Mass of content under operating and test conditions
11 / Trafic loadings/geotechnical loadings(underground pressure equipment)
12 / Windloading
-mounting outside
13 / Snow and ice loads
-location (outside)
-due to process
14 / Earthquake loading
15 / Forces and moments from supporting structures
16 / Forces and moments from piping connections (nozzle loads)
17 / Corrosion
-Internal
-External
-Condensation in piping for gasous fluids
18 / Chemical attack of the materials by the proces fluid
19 / Erosion/wear
-pipelines
(high velocity of fluid, turbulence, vortices)
-solids (e.g. coal)
20 / Fatigue
-pressure fluctuations (range)
-vibration of pipelines
-mixures
-pumps
21 / Excessive loadings due to excessive free movement
(pipelines)
22 / Excessive forces/moment on flanges; connections; bellows; hoses
(pipelines)
23 / Decomposition of unstable fluids
24 / Consequences due to deposits
-loss of fluid (level)
-corrosion
-overheating
25 / Unstability during transport or movement
26 / Danger due to internal pressure in relation to opening and closing of pressure equipment
27 / Danger due to the type of fluid in relation to opening and closing of the pressure equipment
28 / Surface temperature, related to the intended use
29 / Adversely effects of opening (for inspection)
30 / Uncontrolled chemical reactions, due to unsufficient ventilation
31 / Danger related to cleaning, inspecting and maintenance
-ventilation
-product remains
32 / Overfilling
33 / Overpressure due to overfilling
(filling ratio and vapour pressure at reference temperature)
34 / Instability of the pressure equipment during filling and emptying
35 / Uncontrolled release of the pressurized fluid
36 / Unsafe connection and disconnection
37 / Dangerous accumulation of ignitable mixures of combustable substances and air (boilers)
38 / Flame blowback
(boilers)
39 / Discharge of static electricity
40 / Dangers due to release of fluids (location and type of fluid):
-safety devices
-leakages
. flange gaskets (type)
. glad gaskets
. due to forces/moments on flange connections
41 / Consequences of dropping the pressure vessel
(related to intended use)
42 / Negative effects of the test fluid
44 / Thermal liquid expansion
(heating up of locked-in liquid)
45 / Freezing up of coil or vessel filled with water.
46 / Handling (packing, lifting, transporting etc.)
47
48
Nrs.
No.s / Combinaties van gevaren
Combination of hazards
Within the scope of the intended use and reasonable foreseable misuse or operation outside the design condities. Hazard identification
When defining the hazards, there has to be a clear distinghus between the causes and the hazards that can result from them. (exemple: auxilary power failure can lead to collapse due to excessive pressure)
The risk reduction shall be carried out against the ALARP principle(as low as reasonable possible)
1)Answer with: Y/N.
Analysing the possibility of the hazard can be done by logical reasoning, when necessary supported by analyse technicques as HAZOP and FMEA
2)Answer withi:
M = manufactureri;
EC = engineering company;
US = user specification
In the framework of the PED, the manufacturer has to bear the main responsibility and has to be supplied with the relevant information in order to establish the hazard identification and risk assessment. Exception to this principle shall be clearly indicated
3)Deze maatregelen dienen opgenomen te worden in de handleiding
These counter measures shall be part of the operation manual
4)See action list
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