HomeMy WebLinkAboutWingham Advance-Times, 1980-06-04, Page 2•
:.y
j
Mae
° a Rallyi at least,
n a nu4ear power
uld be 'safer than
not In mention
u1ig or construction wgrk.
Qatari() Hydro figures
show the risk of occuPe onal
heath for a radiation worker
receiving an annual dose of
five rems (a unit for
measuring radiation ex-
posure) is 235 in 10,000. By
comparison 295, out of every
10,000 miners can expect to
die as a result, of their work,
while for construction
workers the figure is 265 and
for farmers, 255.
For a worker receiving the
average radiation exposure
at all Ontario Hydro nuclear
power stations, which
amounted to less than one
rem in 1978, the risk of death
is even lower: 02 in 10,000.
The risk to the general
public . •is lower still, with
about 12 persons out of 10,000.
k dying from radiation -caused
cancers over a:lifetime. This
represents about one per
cent -of all cancer deaths, and
much of the radiation ex-
posure comes from natural,
background radiation',
medical X-rays and other
sources.
These and ; other figuTes
were trotted out by Ontario
Hydro last week to convince,
members oaf .the news media
gathered at the Bruce
thielearPower Development
that;,,. despite Widespread
"bile C ice , ttilea
power stations areal sail that
hazardous to your health,'
Gerry Armitage, Scor
health physicist in the heath
and safety division of Hydro,
outlined the nature of
radiation exposure, the
limits placed oil it, and its
effect on humanss.
It is an unnderty ; 144,1
ciple of health physics that ,..
any radiation is ,assumed to
be harmful and exposure,
should occur° only if 'some
benefit is; expected, he said.
Dose omits are ..intended to
assure a low'probability of
biological harm and should
be set as low as practicable.,
Re explained there, are
four basic types of radiation
= alpha add beta particles
and gamma and X-rays —
which are emitted by various
sources and have varying
capabilities of doing harm. A
dose measures the amount of
energy absorbed from
radiation, with a 'rem' set as
the dose unit.
A system of dose limits has
evolved,over 50 years of
workinwith radiation, Mr.
Armitage said. The limit
are recommended by an
international body, with the
federal government" given
the power to legislate limits
for Canada, through the
Morrie` nergy: Control Act.
Some areas of the body are
more susceptible to
raldiatio i damage • : and
cons4nently the limit ' are
lower', The reproductive
°IV* and bone marrow are
mgstsensitive, with the dose
heists for an occupationally
exposed individual set at
three renis quarterly or five
fora full year.
Comparable limits for
exposure of the skin, thyroid
and bone tissue are 15 rems
quarterly and 30 annually ;
for other organs they are
eight and 15 rems; and for
the extremities (hands and
feet) they are 38 and 75 rems.
The exposure limits for the
general public are set at one:
tenth the occupational
limits, none of which include
natural or medical doses.
WHAT ARE
• THE EFFECTS?
Since absolute . safety is
considered impossible, a
'safe' exposurelimit is one at
which the risks are judged to
be acceptable, IVIr. Armitage
said.
The limits are derived
from studying the effects of
radiation exposure on ex-
posed. individuals or
laboratory animals.
There are two basic types
of effects of radiation ex-
posure: 'somatic' effects,
which occur in the exposed
person, and 'genetic,' effects,
which show up in his or her
offspring.
The somatic` effects may
be either the formation' of
cancers or such non-
malignant damage 'as
CUmRtkCO' S-�Mernbers t eC,aKedette CurrliCutles<and 40 of their sister
and.bidt. er Canal es will be'`perforflning at 7:00 p.m. this Thursday evening, at
f.: a n�"hamLtt h school In:their9th annual open (free) demonstration► of twirng
a4�
Oct ,In_zrehl talentscalied''Canadettes�on Parade'. Members of the°Canadetttes
�
range ar►9ge froim ree to *leers'. Pictured with James H. Currle are (back)
na' ;George, heiste Cr? wford, Lana Thompson and Samantha George;
IenniferLa aeon, Lisa Chapman, Trine,McKlttrlck, Halley Robertson,
:rlc 'dies,, .Jana` Gaunt andlJuhe=,Snuck.
1
cataracts, impairert''fertntttji
and damage to blood vessels.
In the latter case there i§ -a
'threshold' dose required to
produce the effect, Mille
with cancer there is believed
to be no threshold dos
required, — every little
hurts.
The, most relevant, and
reliable indicator the
effects of a chronic (long=
term) , low-level dose Of
radiation is the probabthl t ► er {
it. leading to a fatal cancels,
Dir. explained.. ..
"If 10,000 people receive a
dose of one rem, , we expect
one additional cancer death
Normally about 1,600 di,+
from cancer caused by other
things," he added. t;
Occupational radiation
exposures at Ontario • Hydro
nuclear poWer plants during
1978 averaged less than one
rern per worker, he said,
with no one receiving a dose
greater than five rems. ,
Exposure to the public
from the normal operation of
a nuclear power station
could range up to 1.5 rems,
depending on where a person
elation to. the
Outage a .iso coni
is to some other
e incur: snip'
cigarette >E6
o an exposure of
ems (0.008 reins),
g a car for One
risk coefficient of
Delegates
report
on Synod
s.
►CTIVE WASTIFS
ki
�vconcerns iabatnt
s`gar�
•station,
its and
levet was
•:OM
ell s
411iinc ea ,
()Atari()",
Bruce,ai
land el
,„ower plants ranvolve' s4tu L
,,and storage of spent
ind waste products,
F , which remain .in= used .t
radioactive fOr active araS
t' fillers
or ra(
ltd these
# a
of years, and here extensive 000 10 ensure
spokesmen at ag
allay fears. t
•
W i l l i a m s ,a:, ,
i agur of Hydros waste 01N the cenntainers to date,
«disposervice at the Bruce eaiiw„hile Hydro is.going
1iup u�(Fower Develo t •stein dead with. the
nsaid ient; that 90 per cent of construction of the ,Bruce B
the: radioactivity produced at • generating: station,
a, nuclear..power plant ends' scheduledbegin operating':•'
up'in the. spent fuel, which as iala82.:at a cost of more that
stored,.inwwater-filled bays in 0.25 billion
the reactor building. The first :'. reactor is
This fuel represents_ as 4 schediuleed to Start up in •tie
fairly Siiiolt volume, and the.. fall of 1982: A Second• reactor
Bruce Station has a capacity will come on ,line in July,. •
for 1f) reactor -years of fuel 1984, with the final two
storage, life said. At present scheduled to be ready-in'i
it is about one-tenth full. and 1987 C,especetively TOW
• He said all the irradiated ' Will give the' Bruce station a .
u lel . from all reactors generating capacity of "more
?,proposed . td' the year 2000 than 6,000 •megawatts,.: from-
iould•he stored on a football the eight reactors inBzuce A
field 'Stacked 12 feet high, and B, plus'Abe frriigitiig';"
although he did note that's Douglas Point reactor:
snot the way Hydro plans, to The DouglasPoint reactor
t any leakage in
ah.ork� He tioted;there
:ive bpi #ioalurea .of ani:
4,1
nt
FOidDWICH — Mrs, store -it. is currently' shut down for•
Emerson Ferguson and J.`w Since the spent .fuel coli -...repairs, including upgrading
Daunt, who were delegates " tains •. plutonium, which of the safety systems. Some
to the Anglican Synod. Iast remains deadly for many upgrading is also being done
week in London, gave their thousands of years, Hydro at the Bruce A generating..
reports during Sunday
and 'Atomic Energy of station, and extensive
morning service in Trinity Canada'Liitiited are looking repairs •
are being carried out
Anglican Chiuch. atmethods of long-term at two- of the heavy water
Mrs. Ferguson said the storage possibly involving plants'atan estimated cost of
Sunday night service held in sealing the,fuel inside blocks about $6 million. .
• St. Paul's Cathedral, Lon
don, . was one to „,_be
remembered. Some 900 '
attended and each carried a:
lighted candle while the
Gospel was read. Pat Daunt
was chosen to take part in
the service ' and Rev.
Orrance Laramie was ap-
pointed. a Canon of the
Cathedral by the Bishop. A •
gift ` of. money from the
Fordwich parish was ,;
presented at the service tog
sent to' the' Hunger Fund;
Monday was a • very fill`
day. The principal of
Ryerson College was the
speaker and both delegates
reported that his . talk was
most interesting. „:. . ;
The Fall Deanery wall.. be
held November 13' and the
1981 Deanery will, be held
May:24.
Mr. Daunt was , again
elected to the executive of
the Diocese.
HEART OF Tip REACTOR -Work ien�are pulling the flrli�I
calandria of one of• th reactors In the Brti B geherating sti
Nuclear Power Development: The calandr ,which holds the bundles
fuel in its hundreds of tubes, :is the heart of Cando reactor. JTh►Is r
scheduled _.to go, Into service' --:arid begIn generatIng`electricity 'ins 1
,c.
3..
Contains good levels oflitiMportant'
minerals and vitamins essentialfor
good health, reproduction aflc[ milk •
UniittiterSat Salt and.
Minefai Feeder
Prov des.eatt and a inerais
to,;your - herd when and
wheiSe they are needed the
rias% 'Rubber • tub resists
chemiCalaction.Wind"vane
turns 18 ga- metal roof in
production. Designed to supple- ; '
ment a- program Of mixed hay or -"
haylage plus con silage.
._
slightest wind protecting,
minerals from rain, ; etc
100: Ib. capacity, Steel tube
base coaled with anon-toilc ..
paint :Wiil'not tip. Base (liar
meter 48". .. 577-037
Cattle
Magnets 52�
H�Ips to detect metal
objects eaten by cattle
thus, preys ting hardwaredisease. O ,eras magret
size %" x 3' 519630
Udder -Bac
with Lanolin 111 gal.-
A Ianolized iodophor liquid
cleaner/sanitizer for wash-
ing and massaging udders
before milking. Use 1 oz.
per gallon of warm water.
L 592066
Powdered _05
Whirl &A 25'ib-
Concentrated, heavy-duty,
non -foaming pipeline,...
cleaner 'chlorinated tog °
assist in removal of protein : ;
residue. High alkaline con-
tents. Rinses freely.
° . 592-062
aas s„ eaen
COOP Dairy
Towels
Soft, absorbent, ooOnomicai and strong
— even when wet. Using one toweIper
cow, wash, wipe, squeeze out the_towel
and dariip'dry. After<use, discard the
towel. In packs of 250. Dispenser also
avaiiable.15 packs/case 533-100
Bulk Tank Brush
and Handle
Nylon bristles in a high impact white sty-
rene block. Bristles hold water but will
not absorb liquid or odors. Threaded
handle hole with -recessed shoulders.
Complete with 3 ft. handle 533.014
• Handle only 1.25 ea ,,533-015
Chlorine sanitizer, cleaner
fortified with bromine' to
reduce bacterial action.
Use on milking and bulk
tank equipment before
milking. 5924)22
Inflation
Brush . 1861
Regular bore brush design-
ed for clean ing balloon?type...
inflations. Rust -resistant
wire and sanitary nylon
bristles for long life. Rein-
forced handles.. 533.008
1.8 ILS UNITED CO-OPERATIVES OF ONTARIO
FIELD DAY-- Tor11
and field day laltt'if`ta
were, in front, •Sd ...
Lubbers, Novicep;
middle raw. air
1 School held its track
nriet-sof the competition
Jet, juvenile; Veronica
ilciey, Novice. i n the
t' Douuble, Juvenile;
'.r
Annette Joultsena, Junior; Shirley Hogg, Senior; and
Bill ,Cameron, Junior. In the back row are Laurel
Gardner, Intermediate; Tim Koyle, Senior; and Jeff
De Boer, Intermediate.
a74, },si