by providing the control cables to various electrical ducts in which suitable contactors have
have been in- stalled.
(4) Wards
Both in single rooms and open wards except those few which are fully airconditioned ceiling fans have been provided for summer cooling.
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Ventilation and heating are gen erally provided by a corridor high level ducted air system.
By each patient a special locally manufactured anodized aluminium bedside panel has been provided which generally incorporates a bed- side light. radio panel, call push, and socket outlet. In a very few V.I.P. rooms telephone jack plugs are also included.
The bedside lamp is easily adjust- able and in addition to the normal use by patients for reading is also suitable for medical examination and
treatments.
The radio panels provide both Chinese and English programmes at a selectable volume by means of stereophonic pillow phones or mo- dern light-weight head phones.
A luminous nurses' call system has been installed which can be operated from each bed by pressing the rub her pear push which is plugged by a flexible cord to the bedside panel. Calls are registered by small ted pilot lights in the corridor or passage nearest to the bed and at the Nurses Station. A master supervising sign- al in the Sisters Office will also show when any calls are outstanding. Reset buttons are below the corridor lights.
Comfortable standard ceiling lights have been provided for the general ward areas and shielded low level glare free lights can be switch- ed on during sleeping hours for use by night duty staff. A special ceil- ing-mounted telescopic
telescopic inspection lamp and a double X-Ray viewer have been provided in the treatment room. At each ward area a 30 amp. flush mounting socket has been pro- vided for portable X-ray equipment.
Foot-operated electrical incinera- tors with automatic cut-off timing
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cycles and large enough to deal with surgical or maternity dressing are provided in all sluice rooms.
(5) Operating Theatres Special electrically conductive floors and mercury type switches and sockets have been provided throughout the zones of risk in the theatre suites to reduce the possibili- ty of inflammable gases exploding as a result of static electrical charges.
Special fully adjustable shadow- less low voltage operating theatre lamps are fitted over each table.
Special operating high intensity with adjustable focus lights which operate from ceiling sliding tracks are provided for the Neurosurgical Theatre unit.
In the event of the tripping of the miniature circuit breaker
or the failure of main electrical supplies. these lamps are automatically and instantaneously fed from battery cubicles until the electricity supply resumes by resetting the M.C.B. when the fault is cleared or the em
the ergency generator can take up supply.
Double X-ray viewers are also
fitted as standard for each theatre.
The sterilizing equipment is nor- mally operated by steam but the standby boiling instrument unit can also be operated electrically if re- quired in the event of steam failure.
(6) Clock System
Throughout the Hospital 380 slave clocks which operate on an impulse system are electronically controlled by a master clock and transistorised relays. All clocks will show the same time and be adjusted by a single operation. The clocks installed in all operating theatre suites are provided with red second hands. In addition four time recorders have been provided and connected to the same system for the use of menial staff. This specially designed system incorporates the latest control equip- ment recently developed in the UK.
(7) Fire Alarm System
A total of 126 fire alarm contacts have been installed throughout the
building over the fire hose boxes situated adjacent to every staircase. If any one of these is broken, the teleplione operators, maintenance en- gineers and the nearest fire station are warned instantly and automa- tically by means of lights and bells. At the same time the alarm bells in the menial staff quarters and sisters" and nurses quarters and the fire booster pumps in the motor rooms are also operated automatically. In addition the flashing warning lights in all nurses stations are also operat- ed automatically. In the telephone operators room the warning light control panel indicates which of the 126 glass contacts has been broken and this information can be passed on by a direct line telephone to the fire station duty officer who, by radio, can inform the fire engine drivers on route of the best and most convenient approach. The building is 600 ft. long and 150 ft. high and access has been arranged to at least two sides of every high rise wing or section. At each fire alarm contact position there are dry fire hydrant riser connection valves and fire fighting hoses and equipment.
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Each of these risers also has twin inlet valves at ground level which can can be supplied by fire appliance pumps from the 11 street fire service pedestals which are located around the hospital at maximum intervals of approx. 100 yards.
A roof level reserve of 10 gallons is exclusively reserved in each of the two towers for fire fighting purposes, and provision has been made for parking a fire tender on the site.
(8) Telephones
A private automatic branch ex- change has been installed to handle 40 external and 400 internal exten- sions capable of expanding to 500 extensions if required. Some of the latter are connected to Staff quar- ters on the site.
Some phones are fitted with secre- tarial extensions and all normal extensions have special holding and
The transferring facilities.
ward sisters calls can be switched direct to the nurses' station where at night a flashing light will signal incoming calls instead of the usual bells.
THE HONG KONG & FAR EAST BUILDER ·
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· VOLUME 18. NUMBER 5