1957-06-10 — Page 18

J

Pazó 8

CHINA MAIL

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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

BUNDAY POST-HERALD Врвов for commercial Advertising should be booked not later than noon on Wednesdays.

For the 8OUTH CHINA MORNING POST and the CHINA MAIL, 48 hour before date of publication.

Special Announcements and Classified Adväril@1- mente a VBUB.

THE BOYS & GIRLS' CLUBS

ASSOCIATION ··

of

mybes your support in helping to

the Hongkong citizana to-morrow. BubleripBond 'should be west to:-The Hon. Treasurer, The Boys and Girls' Kisha Amociation, War Memorial Welfare Centra Bothorn Playground, Wanchai

Telephons — 24411.

NEW TERRITORIES

FANLING UN LONG

SHEUNG SHUT DISTRICTS.

THE

CHINA MAIL

is obtainable from the SHEUNG SHUI STATION STALL

· SHEUNG SHUI RAILWAY STATION,

Orders Accepted Deliveries Undertakan,

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