| NEW
PROJECTS
1. The inspection of a 60m chimney, in a remote part of the Sind
Province in Pakistan, which serves as a vent for sour gases at a
gas collection and pumping station. The original chimney was designed,
manufactured and erected by F E Beaumont Ltd in 1992 and since then
we have sent operatives on two previous occasions to inspect it.
2. The preparation of a report on the condition of a steel chimney,
the remedial works required to refurbish it and undertake the design
for the fitting of an additional 2no inlets
3. The recommended remedial works to the chimney we inspected last
year for Edenderry Power Operations Ltd, Co Offaly, Eire.
4. The supply and fitting of architecturally designed perforated
cladding to 2no structures, containing flues serving generators,
at a central internet hub / access facility in London.
5. The erection of steelwork which will provide a modern training
facility for Wiltshire Fire Services at their Swindon Fire Station.
6. To prepare a report on a hospital chimney where a split in the
steel windshield as been discovered.
RECENT PROJECTS
1. Flues gas calculations for Zisman Bowyer and
Partners.
2.
Inspection of a 70m high steel chimney for Edenderry Power Operations
Ltd, Co Offaly, Eire.
3.
Demolition of existing flues and supply and installation of new,
for Dalkia Energy and Technical Services.
4.
Inspection of a 52 multiflue chimney for Thames Water Utilities.
5. Inspection works to liners within a concrete
chimney at a hospital in Taunton, Somerset where the client wanted
to install a new boiler and connect it to an unused steel liner.
After an ultra-sonic inspection it was found that the disused
liner appeared to have corrosion problems over the top section
and further works were undertaken to discover the cause and extent
of the problem. The problem was localised to an area under and
around an inspection door which was badly fitted and allowing
the ingress of moisture which held by the mineral wool insulation
had caused the steel surface to corrode. The corrosion was not
severe and a report was submitted recommending that a new door
of a better design be fitted, the corroded areas mechanically
cleaned and painted and new insulation fitted.
5. The design, manufacture and erection of a 27m high mast to
take 3no 600mm diameter twin wall flues for a new boiler house
at the famous Great Ormond Street Hospital for Children. The
mast was located in a courtyard and so the required telescopic
crane had to stand out in the roadway. Because the area is very
busy and congested a road closure was required and the work was
completed on the last Saturday in March this year.
6. Pilkington Ltd were looking at changing a process which was
exhausted via a brick lined steel chimney at a plant in Australia
and technical advice was presented on the viability of carrying
out the modifications the client was considering.
ONGOING PROJECTS
1. Design study and the supply of a tuned mass
damper and steelwork for upgrading a chimney originally built
in 1982 to the current British Standard.
2.
11m high Cor-Ten multiflue chimney and flues for the energy centre
Lennoxlove House, Haddington near Edinburgh. Home to the Duke
of Hamilton.
3. The demolition of an 18m chimney, originally provided by F
E Beaumont Ltd in 1971, and associated flue run. The chimney
is in a very poor condition with a hole visible in the structural
shell, extremely thin steel in places and corroded holding down
bolts. New holding down bolts will be drilled and resin bonded
into the existing concrete base prior to the replacement chimney
and flue being erected.
4. The removal of 4no twin wall chimneys from boilers mounted on
the roof of the Grovesnor House Hotel on Hyde Park, London.
PAST PROJECTS INCLUDE
1. In the early 1980’s F E Beaumont Ltd supplied
a 60m high chimney, in the North West of England, containing
a single small diameter liner which was to vent gasses when tankers
were unloading. The client needed to upgrade the plant and required
a larger vent to be fitted so Beaumont’s undertook a design
study to assess the condition of the chimney and what works were
required to bring it inline with the current BS4076:1989 Specification
for Steel Chimneys. It was found that by removing the existing
helical stabilisers, fitting a tuned mass damper and fitting
strengthening plates and re-bolting at flange levels the chimney
could be refurbished to meet the current standard. Beaumont Technical
Services Ltd is providing the tuned mass damper and additional
steelwork for others to fit.
2. Home to the Duke of Hamilton, Lennoxlove House
is undergoing a major refurbishment and the project includes
a new energy centre with 3no boilers. Beaumont Technical Services
Ltd have been contracted to design, supply and install an 11m
high multiflue chimney with a Cor-Ten windshield and the ducting
between the boilers and chimneys.
3. When Zisman Bowyer and Partners were looking
at a project with regard to larger boilers, than originally envisaged,
having been connected to liners in an existing multiflue chimney
they can to us to perform the calculations relating to the expected
resistances and velocities that would be encountered. Within
three days they had the calculations for both gas and oil firing
at full load and in turndown mode.
4. When originally built in the early 90’s
the Edenderry Power Plant was reputed to be the largest peat
burning plant of its type and the 70m high insulated and clad
chimney was originally designed, manufactured and erected by
F E Beaumont Ltd. In the late summer of this year the chimney
was inspected both internally and externally and an extensive
report complete with photographs and recommended remedial works
presented to the client.
5. When it was found that the flues on a boiler
system, serving a home for the elderly in Greenwich, London,
were holed and in very poor condition Dalkia Energy and Technical
Services contacted us with regard to the replacement. The existing
steel flues were demolished, a plenum box refurbished and new
twin wall flues installed. With the fitting of a temporary flue/chimney
to serve one of the boilers the residents were never without
heating or hot water during the works.
6. In keeping with the clients regular inspection
schedule a 52m high multiflue chimney at the Bacton Sludge
Incineration Plant was inspected during a partial shut-down.
The chimney originally was designed, built and erected by F
E Beaumont Ltd and is unusual as the tuned mass damper is ‘Y’ shaped
and fitted within the windshield avoiding the liners.
SAMPLING PLATFORMS ON CHIMNEYS
Since sampling of flue gases has increased and the
Environmental Agency published Technical Guidance Notice M1 Sampling
Requirements for Monitoring Stack Emissions to air from Industrial
Installations which meant that sampling platforms, where fitted,
became far larger the writer has been extremely concerned with
the safety aspects especially when retro-fitted, and voiced his
concerns at ATLAS (Association of Technical Lightning and Access
Specialists) meetings.
ATLAS REALISING POSSIBLE DANGERS TO OPERATIVES
ATLAS realising the possible dangers to their operatives,
when fitting or inspecting chimneys, to which those platforms
and access had been fitted, decided to bring this to the Public
Notice and started a campaign to this end. A series of articles
and letters appeared in Contract Journal and following this the
Environmental Agency, ATLAS and Source Testing Association had
a very productive meeting and the EA took on board all that ATLAS
said and a revised edition of TGN M1 should hopefully be published
this summer.
It is surprising how many platforms and access ladders have been
fitted to chimneys without a structural analysis being undertaken
to ensure that the additional forces can be accommodated by the
original and in the view of the writer it is only a matter of
time before there is a catastrophic failure due to an owner/operator
not realising this. Most chimneys have been designed with little
additional capacity to allowable stresses, a matter of design
being maximised against cost.
For more information as to whether a sampling platform
is required,
it is surprising how often sampling can be undertaken in the
flue run, contact Dave Curtis of the Source Testing Association
at
dave.curtis@s-t-a.org
If you require a structural analysis of your chimney to check
that it can accept the imposed loads of ladders and platforms
complete the consultation form
on the contact us page. |
