Richter KSEA/F Series Safety Valves - Manual (Page 8)

Series KSEA/F
Page 8
9530-052-en Revision 03
TM 7128 Edition 05/2008
5.3 Return consignments
Valves which have conveyed aggressive or
toxic media must be well rinsed and cleaned
before being returned to the manufacturer's
works.
Observe appropriate safety
precautions when cleaning
the valves of toxic or
aggressive media.
Appropriate safety clothing and equipment should be
worn at all times when working with toxic media!
It is imperative to enclose a safety information
sheet / general safety certificate on the field of
application with the return consignment.
Pre-printed forms are enclosed with the installation
and operating manual.
Safety precautions and decontamination measures
are to be mentioned.
5.4 Disposal
Parts of the valve may be contaminated with medium
which is detrimental to health and the environment
and therefore cleaning is not sufficient.
Risk of personal injury or damage to the
environment due to the medium!
Wear protective clothing when work is performed
on the valve.
Prior to the disposal of the valve:
Collect any medium, etc. which has escaped
and dispose of it in accordance with the local
regulations.
Neutralise any medium residues in the valve.
Separate valve materials (plastics, metals, etc.)
and dispose of them in accordance with the local
regulations.
6 Installation
The installation conditions to the ASME Code
Section VIII, Division 1, Appendix M must be
observed. They are major preconditions for the
safe operation of the valve.
Examine valve for in-transit damage, damaged
globe shut-off or control valves must not be
installed.
Before installation the valve and the connecting
pipe must be carefully cleaned to remove any dirt,
especially hard foreign matter.
During installation, pay attention to the correct
tightening torque, aligned pipes and tension-free
assembly.
6.1 Sizing of the inlet line
The admissible pressure loss in the inlet line
must not exceed 3% of the set pressure of
the safety valve.
The determination of the pressure loss relates to the
maximum flow of the valve at 110% of the set
pressure and 110% of the certified coefficient of
discharge.
An excessive pressure loss at the inlet of the
safety valve can cause rapid opening and
reseating of the valve or chattering.
Chattering results in a reduction in the discharge
capacity and may cause an inadmissible rise in
pressure in the system and damage to the seat
sealing surfaces.
The inlet line must never be smaller than the
nominal diameter of the safety valve inlet.
Lay supply lines as short as possible.
Install, if at all possible, the valve directly on the
container to be protected.
At least chamfer the container nozzle in the inlet or
even better provide with a radius.
An inlet nozzle with a tapered design has the best
shape in terms of flow.
6.2 Sizing of the outlet line
Outlet lines are to be sized so that reliable
functioning of the valve is ensured under all
expected operating conditions.
The medium is to be discharged so that there is no
risk to people and the environment. The statutory
provisions (e.g. accident prevention regulations, and
the equivalents of the German Pollution Control Act or
the German Clean Air Code) as well as local
regulations (works standards) are to be observed.
There must be no possibility of the safety valves
becoming ineffective due to shut-off elements.
6.2.1 Admissible back pressure
The outlet line must never be smaller than the
nominal diameter of the safety valve outlet.
The admissible back pressure in the valve outlet
must not be exceeded in order to prevent
destruction of the bellows or a reduction in the
discharge capacity.