Technical Visit to
Fire Doors Manufacturing Product in Shenzhen
Organizer: HKIE Materials Division
Date,
Time & Venue:
7 April 2018
(Saturday) 9:00 am - 16:30 pm
Assembly: Futian Port , Gate 1 outside China side
immigration building.
Speaker: Representative from
respective host organizers.
Programme Highlights
Visit Sherex Engineering Limited
Shenzhen Factory, which is awarded with ISO9001 & ISO14001 certification,
to have understanding of fabrication progress of sophisticated fire rated
timber, steel and glazed doors complied to the latest fire rated standards
required in Building Departments COP2011.
Attend a fire resistance performance test on doors taking
place in the HOKLAS accredited laboratory-- Forte Testing and Consultants
Company Limited in ShaJin, ShenZhen.
Registration & Enquiries
The number of participants is limited to 25. Pre-registration is required. HK$200 includes
lunch and transportation. For registration,
please fill the HKIE Standard Form and email to lamchising@hotmail.com.
The
successful application must equip with his/her own safety helmet, safety shoes
and safety vest for the visit. Only successful applicant should be notified
on or before 24 March 2018 for the payment. For enquiries, please contact Ir CS
Lam at 91527659. CPD certificate will
be issued.
Note: The host organizer has right to change the itinerary
without prior notice. For personal interest, the participants should purchase
his own insurance. The successful application must equip with his/her own
safety helmet, safety shoes and safety vest for the visit.
Report
Technical visit to
Fire-Rated Door Factory at Shenzhen
By Ir LAM Chi Sing
A technical
visit to a Fire-Rated Door factory at Shenzhen was organized by the Materials
Division on 7 April 2018. The factory - Sherex Fire-Proof Materials was
established in 1996, manufacturing and suppling fire rated glazed metal and
wooden doors. We watched a video showing the fire rated door test in the
furnace at 60, 120, 180 or 240 minutes performed in their laboratory. It
complies with international standards such as BSEN1634-1:2008, BSEN1634-3:2004
and BS476:Part22:1987. Our members then visited their workshops. It is a labour
intensive manufacturing process, with PPE clad skilled workers carrying out
assembly of metal door frames and panels using welding, grinding, measuring,
cutting, fabrication and surface finish techniques.
Calcium
board is the main core, placed between two steel cladding surfaces which acts
as insulation and fire retardant for the fire rated doors. Fire rated
resistance ironmongery was also installed in its final position. We then went
to see the wooden fire rated doors which had been seasoned prior to use.
Perlite cores are placed between two timber plywood/laminated decorative
sheets; this material can resist a minimum of 120 minutes fire exposure. One of
impressive technique was the use of a needle cutter to cut the veneer
/laminated board to expose the glazed panel within the wooden door itself. This
was a high precision operation and managed to cut the board without damage to
the glazed panel installed within door.
The
participants then visited the second floor to understand the spray painting
operation. There were four separate
rooms for carrying out spray painting. The rooms were equipped with a water
curtain and ventilation system to dilute the chemical paint which were sent
down special ducts into environmental water receptor tanks for filtration
before treatment and final discharge into public sewers.
The workshop
had a high standard of housekeeping, with sawdust extracted by an artificial ventilation
system at each of the work stations. All sawdust was collected, bagged and then
sent off to an environmentally friendly waste disposal system.
Special
arrangement was made by Sherex in that two steel fire rated doors specimens of
different sizes were tested for 120 minutes in the furnace by an independent
laboratory. Our members had chanced to observe on-the-spot fire testing of
steel metal doors.
Measurement
were taken at 10 minutes intervals in order to observe any damage or distortion
of the door panel during the test. The furnace temperature was gradually
increased to 931.4 °C within the 120 minute test, with the average surface
temperature reaching 140°C and maximum surface temperature reaching 246 °C.
The visit
was very informative, with members not only now understanding the work process
of fire rated door manufacturing but also look the whole process of the fire
test.