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CARS FOR SALE
HAKLEY DAVIDSON Motorcycle 1983, 1,200 c.e. European owner." In
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For inapeGLIDE
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¦
THE CHINA MAI MONDAY, JUNE 19, 1957.
SCIENCE & ENGINEERING
UK STEELWORKS USES NUCLEAR
NUCLEAR-POWERED SHIP MEASUREMENT
Giant Tanker
Its
Will Pay
Own Way
By TREVOR BLORE
Some of Britain's best scientists, naval architects, engineers and specialist naval officers are now. busy at several centres on the groundwork for building a giant tanker which is expected to be the world's first nuclear-powered merchant ship to operate on a sound commercial basis.
Britain is not competing in the race to produce the first nuclear-powered merchant vessel, irrespective of cost and other economic considera- tions.
They will have the bencil, of
Most advanced projects in Britain still holds first place in this field are the American de- the world.
for velopments
[in atomic merchantman to be completed by carly 1000 and the Russian project for building an atomic powered icebreaker.
But as in the cate 'ESKAMEL'
of a turbine Bel a nanny
marino propulsion,
WANTED KNOWN
APUTS? PIMPINS7
Coke ma m lub Louny L
ALZEA GVHUJUNG
Just ieuang bagiensativa kina biurek,
MUSICAL
THERE IS NO BUSINESS Uke Show Lumiwa We have all the "Days of
Broadway sub Show Bost
bureau Spede, Xing als Kate, Bouti Pacle, Peter Pan, Kamnat, 171 Ab- Bec, Bail are Hingung Arclyd
A 281 JOY," Most lap Faller (complete with diniogue) and #bol of quar tilica. We ses going all out in prouading the intest popular and novelty numbers ibe all to en joy. Cell at Pares, & Co., 780 Alexandra House, Telephones 30166,
Di
TUITION GIVEN
MODERN BALLROOM DANCING: Private jaescola, ali istem deBOOK. Rosure and enjoy socia
Вере Teman outdidence: "Tony Wong, sa Wugbesonang load.
STAMP
STAMPS
بورغ
lessons learned in the years of
.conducted research Admiralty scientists preparing for the construction of Bitain's
first atomic-powered submarine,
where the Shell tanker Auris Dreadnought.
won the first ship to operate ont normal cummercial runs with this form of power-Britain s
the first preparing
atomie merchant vessel which will pay
way OB operational costs.
3
basis
That is why It has been decided to build an atomically powered oil tanker of about 80,000 deadweight tons, costing between £10,000,000 and £12,000,000 and ready for service within six years,
British shipping experts Jang recognised that, at least for ä start, the only type of ship which could economically justify the building and Installation of An atornie furnace to provide driving power would be a giant oll tanker.
This is
because nearly ALBUMS' "Collection | auch ships spend
all their time at sea, since high- speed pumps can load or dis- charge their vast cargoes al tenninal ports in a matter of hours.
Builder" pation New stock now available,... $1. From South China Morning Post Liu,,, Wyndsam Street and Salisbury Road, Kowloon,
SOMETHING EXCLUSIVE, Collec-
packets of ausarted alap From 20 cents per packet upward. An entirely new Price. South China Morning Port Ltd. Wyndham Street Hongkong and Sailsbury Road. uwlogo.
To ADVERTISERS
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ASSOCIATION ··
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For most other cargo-carrying ships there are long periods of lying at a wharf loading tila- charging goods, This requires on uneconomic damping down of the atomic furnace.
The nature and design of an all tanker also lend themselves beller to a size which will accommodate and justify an atumle furnace. The huge expansion in size of oil tankers and ore carriers in recent years, up to 100,000 tons deudweight, has demonstrated the feasibility of such units even with conven- tional machinery.
Britain's
Another feature of atomie tanker will be high speed, probably between 28 and 30 knots, To achieve such speeds with oil-burning boilers for steam or diesel engines is uneconomic in fuel consumption, but with a nuclear reactor us furnace it will be justified.
The reactor for the Brilish lanker will probably bo an Linproved and moduled C43- cooled type, developed from that in use at the Calder Hall power station in Britain, with a heat transfer system to special steam turbines. One engineer- ing group is already worlding on the development of such specia
turbines,
ܐܐA
the
80,000-lon deadweight hull will allow for such installation, and adapting Calder Hall system to Maritime purposes will save much money compored with the reported American Intention of uisng a nuclear reactor similar to the expensive system installed in the Unlied States Navy submarine Nautilus, the firal vessel ever to be powered with nuclear energy.
Much more expensive research would be necessary in Britain to produce a reactor compact enough for a ship of 20,000 tons; and this would also require very highly enriched nuclear fuel, which would add heavily to operational costs.
Although the weight of the reactor and its vital protective pervening againat radiation will be heavy in the projected British tanker, experts predict that it may well be less than that of conventional machinery togulher with the bunker Auct required for a vessel of this size, The positioning of the hogyY. reactor in the hull to bost rect
is the bly problem being studied by rieval architects,
This atonio tanker project is being carried forward as combined 'operativi between the Admiralty and the shipbuliding industry, in which
shipping-
Not
that
the shipping in- dustry itself has been backward In this old, as far
as their conomies have permitted. The
Researen British Shipbuilding Association has had ก team working for a couple of years utt the atomic murine ressarch problem for marine propulsion ot
the main British atomic research centre at Harwell.
And five groups of engineer- Ing companies
United In the Klugdom are engaged in work on design and development studies connected with reactor furnaces suitable for ships.
In one operation this large multipõe machine drills and counter-bores the rivel holes in brake Unings. It is just one of the many machines in use at the British firm of Feredo Limited- fhe world's largest single factory devoted exclusively to the manufacture of friction materials. At this. British firm research engineers are constantly experimenting to find the perfect brake lining in the Interests of road mifely. When now brake lining material is being developed other factors besides the frictional properties must be considered.
MANDRAKE THE MAGICIAN
TUB SAW YOUR ACT TONIGHT, THOUGHT IT WAS GREAT. HES A MAGIC BUG. WANTS TO SEE YOU.
WANTS KY AUTO- GRAPH?
FERDINAND
NANCY
BUT YOU PROMISED
TO TAKE ME TO THE ZOO TO SEE THE ANIMALS
I DUNNO, JUST WANTS TO SEE YOU.
I HATE
ZOQS--
TELL MR.TUB IVA NOT AT THE BECK AND CALLOFA HOODLUM→→
ARE YOU PARTICULAR WHAT KIND OF ANIMALS
YOU' SEE ?
THEY
BORE
ME
NO-- ANY
JOHNNY HAZARD
YIPE! ONE GOT THROUGH TO US Į TAKE
EVASIVE ACTION, "JOHNNY'S
KIND
-THE ONLY PLACE I WANT TO SEE HIM IS BEHIND BARS.
HOW ABOUT BEARS AND BEAVERS ?
SWELL
I WILL IF YOU'LL GIVE MAG SOME POWER, TREV! GOT THE THROTTLE TO THE WALL, BUT WE'RE LOSING AIRSPEEVI
By Lee Falk and Phil Davis
CAN YOU GRE ME, OR ANYONE ELSE, TELLING TUB
THAT'S
LOOK, RAL, STOP THE CHATTER AND COME ALONS. NOBODY ARGUES,
WITH TUB.
HMM-- THE MOST INSISTENT FAN LEVER
METI
By Mik
By Ernie Bushmiller
VS
一つ
By Frank Robbins
G-GOT THE NUCLEAR-POWER CONTROL RODS FULLY RETRACTED, B-BUT OUR TURBINE R.RM'S |ARE,FALLING RAPIDLY{ "FRAID THAT BABY HIT US. WHERE IT HURTS. OUR POWER-PLANTA
Radio-active material is being used at a Shef- field steelworks for measuring the thickness of fast moving hot strip by non-contact means. The effect of the new installation-thought to be the first of its kind in the world-is to improve the quality of steel strip.
Previously strip was measured of recording has the very con- by hand every few minutes at riderable advantage of indient- one end of a coil, the gauge ing clearly in a small space the measures the
thickness of the trend of a large number of sirip at all points,
In general the operator A radio-active source and u dars not net on Individual strips radiation detector are placed on but
observes a trend before
strips.
either side of the strip. The widng action,
intensity of radiation falling en
The equipment comprises ave
the detector varies with strip main units:
thickness causing the detector
electronic cabinet,
output to vary. These varia- display board, operator's control tions, After Passing through ek source unit and delector
electronic equll intring Town of
on a panel
different coloured lights pre-
unit.
The measuring head
consiris senting a "see at a glance ple- of two units, the source turrit
These ture of the longitudinal profile and the detector.
two
of the whole strip. A Creed units are mounted on either teleprinter provides a permanent side of the steel strip so that record in digital form.
the radiation from the source 13 directed at the detector. In passing through the strip, a cer lain amount of the radiation is absorbed, depending on the thickness of the metal, and thus the intensity of radiation reach-
The display board comprise; 48 vertical rows of 5 coloured lamps, The middle, green lamps Indicate that the strip thickness la well inside specified limits: the adjacent amber rows signify that it la just inside, and the Ing the detector is reduced, outer red rows, that it is out- fide limits. The tolerance limit can be set on the Instrument to suit the rolling speelfication which is usuntly in the region of 0.002 inches to 0.010 inches,
Each vertical lamp row FC- presents the mean thickness of that length of strip, which pass- ed through the gauge during » one second integrating. perion, The lampone in each vertical come on at about one row-thus second intervals, until the whole length of the strip has passed the gauge.
L
Any variation thickness causes a corresponding variation in the radiation being measured by the detector and associated electronics. It is therefore f almplc matter to calibrate the instrument directly in units of thickness,
The source unit houses the Indio-active source and is also
fitted with special equipment which is brought into opera llon only when the Instrument uos switches itself to "standardise”. In this condition, a signal from
the electronic unit causes д pneumatic
cylinder to place a cirzular disc ut metal uf By this time the longitudinal standard thickness over the thickness profile of the whole radio-active source. strip is displayed on the lamp boord, which remains alig until the leading edge of The next strip enters the gauge.
The teleprinter has been adapted to print signs represent- ing thickness error. This form
There's More than Magic in
FRY'S 4
FAVOURITES
They Delicious
are
CUTEX
LIPSTICK
IN THE
LATEST
SHADES
ROWNTREES
YORK
A FAMOUS
NAME IN CHOCOLATE
...this situation calls for a
San
Miguel
this
men
The instrument then sures
standard,
and, if necessary, adjusts itself to give correct reading. There are, in fact, six standard metal discu in the source unit and the ap- propriate one is preselected by means of u
controls. The on the
operator'a control compicie unit is housed in a rugged water-cooled jacket,
A cabinet contains the cloc- ---- tronica which
tho amplify signals from the detector. The output from the amplifler is fed to a discriminator which clasal- ties each signal into one of five. levels, depending upon magnitude of the signal, which 1. urn depends upon the
thickness average
of strip passing through the measuring head during the appropiate
second.
the
The five levels are arranged to represent out of tolerance positive, Intermediate positive, Dominal thickness, Intermediate negative, out of tolerance necga- tive. The five levels are re-
presented by Ave banks of uniselector which is stepping round at one second intervals over ility contacts each,”
Once every second, an im- pulse applied to one of the live unselector banką, depend ing on the voltage of the signal entering the discriminator. The Impulse will be fed to one of the uniselector contacts and the appropriate relay. will be operated. Each
uniselector bank therefore representa OBC of the five conditions of thick-
Peech ness.-(Site)
& Tozer Ltd., Rolberham, England,
Gauge developed by the Bald- win Instrument Co. Lid, Dart- ford, Kent, England),'
PORTABLE PUMP FILTER
A new
portable pump alter giving on output of filtered water of high bacteriological purity from impure sources at the rate of 20 gallons per bour was shown for the first time at the 1057
British Industries Fair (Castle Bromwich, Birmingham, May 8 to 17).
Already tried out with markod success a tropical countries, it is now going into quantity pro- duction. It is oday to work, and there is nothing to go wrong if It. Ex properly used weighing only
a little more than five pounds, it is ideal for survey parties, explorers, and for use fa armed services,
The pump filter uses the "Staray process; pathogenic discoso 'gérms are removed from Impure water, supplies by porous cerorale Alter candies and sub- pequently destroyed by the foota process from "Stormark", so that the iter candies do not requira boiling from time to Unins The manufacturers die: kiritish Barkefeld Filters Lid, or TOWE Milla, Connon Lens Copbridge Kont England */ wijk" dia. exhibitig a fill":"zinded of! Filters for industriel:hid÷dón |usor; "aalf-uterilainat medias
wrateur #orsstieni: “modi