8
YarwaY
A.T.-Temp CryogeniC desuperheATer
InstallatIon and MaIntenance InstructIons
inspection procedUre
spray nozzle assemblies (1) and (2), fastener
rings (5), piston (4), piston rings (32) shall
be considered wear parts. The materials
selected are such that they do cope with the
conditions as found on applications in liquid/gas
environments of cryogenic conditions. Thermal
cycling does occur and users should realize
that the temperature differentials at Cryogenic
desuperheaters can be significant.
it is recommended to check the spray nozzle
assembly, with the integrally vacuum brazed
injection nozzles, fastener ring and tack-welds
after the first year of service.
At the inspection, by use of dye check or fluor
penetrant investigation, these parts shall be
checked for cracks. parts with hair crack
indications shall not be re-used. ‘defect free’
heads in such installations shall be inspected
once per 2 year of operation.
it is advised to replace the above mentioned
components at least once per 5 years
of service.
Taking these precautions has historically
proven to give reliable service.
note:
spray nozzle assemblies may have been
made specifically for the specification. delivery
time of such components will be 8 weeks.
storage procedUre
upon receipt, check both the A.T.-Temp
Cryogenic desuperheater and the packing case
for any transit damage. Any damage to the
A.T.-Temp Cryogenic desuperheater should be
reported immediately to yarway or their local
agent. Any damage to the packing container
should be rectified to prevent the ingress of
dust or water, prior to placing the equipment
into storage.
For long term storage use only a dry indoor
location. ensure that the A.T.-Temp Cryogenic
desuperheater is dry and free from moisture.
retain A.T.-Temp Cryogenic desuperheater in
its original packing and inspect at 3 monthly
intervals to ensure that no deterioration
has occurred.
Before placing the A.T.-Temp Cryogenic
desuperheater into service, stroke valve
spindle a few times and inspect other
components, such as actuator, seals, etc.,
to ensure correct functioning.
Follow the procedure for installation as
detailed in the operating and maintenance
instruction manual.
note:
materials and data of units supplied may
deviated from this instruction manual. please
consult order documents in case of doubt.
A.T.-Temp Cryogenic desuperheater is
classified under european directive 97/23/eC
under category i or ii with Ce-marking.
Check the information contained on
the identification plate-tag plate and
documentation and return the unit to its
packing with protective covers in place.
For short term storage, up to 6 months
duration, no additional preservation
measures are necessary. retain the unit
in its original packing in a clean, dry indoor
location. if outdoor storage is unavoidable,
then the packing case should be enclosed in
a waterproof covering.
neither emerson, emerson Automation solutions, nor any of their affiliated entities assumes responsibility for the selection, use or maintenance of any product.
responsibility for proper selection, use, and maintenance of any product remains solely with the purchaser and end user.
yarway is a mark owned by one of the companies in the emerson Automation solutions business unit of emerson electric Co. emerson Automation solutions,
emerson and the emerson logo are trademarks and service marks of emerson electric Co. All other marks are the property of their respective owners.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be
construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are governed by
our terms and conditions, which are available upon request. We reserve the right to modify or improve the designs or specifications of such products at any time without
notice.
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