9
Note:
Before actioning any installation observe the 'Safety information' in Sections 1 and 2.
FV type ash vessels are supplied with integral support brackets.
Brackets should be fastened rmly to secure mounting points. It is important that external
stresses are not introduced into the vessel a n d s h i m s s h o u l d b e u s e d b e n e a t h t h e s u p p o r t
brackets if necessary to obtain accurate pipeline alignment during installation.
Ensure that the blanking plugs supplied with the vessel are tted securely, both at ambient
and operating temperatures.
The vessel must be mounted with the ash steam outlet uppermost, (see Figure 1). Each
vessel incorporates a " BS P sc rewe d bo s s f o r a pre s s u r e g au g e, U - sy p h o n gau g e an d c o c k .
A separate connection is provided to accommodate a safety valve* and it is recommended
that a oat trap is tted beneath the condensate/residual blowdown outlet. Fitment of a
vacuum breaker may be required to counteract the creation of vacuum conditions by steam
condensation.
* It must not be assumed that the safety valve will be the same size as the connection - refer
to 'Overpressure protection', Section 2.1.
4. Installation
5. Commissioning
Before putting the unit into service, ensure that:
-
Blanking plugs are tight; check for tightness also when vessel has reached operating
temperature. Caution:- Maximum operating temperature is 198 °C (390 °F).
-
All connections to adjoining pipework/plant are sound and secured so that no external
stresses are introduced into the unit
-
No extraneous objects / material are present within the vessel.
-
Any associated safety accessory (e.g. safety valve) has been correctly sized, adequately
tested and is in working order.
-
Check allowable pressure/temperature rating of anges used and ensure operation and
safety accessories are set within this limit.
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