Evening star., 1959-12-11
OFFICIAL NOTICES


size and so operated as not to clog
readily. Outlet valves shall be tested
BY the Director Of Public Health 1
for accumulation Of milk in the
valve passages upon installation.
SO 500 .233. Installation Of Leak
valves shall be Installed in the /
positions and manner stipulated /
below. Plug-type leak-proteetor 4
valves shall be tested for leakaEe |
by the Director Of Public Health 4
upon installation, before use. and /
whenever the face or grooves be-
come marred. Poppet5type valves
Director Of Public Health upon
installation. and before use. (a)
Leak-proteetor valves required, All /
inlet pipelines and outlets from
Yat pasteurizers or pockets shall /
be equipped with leak-protector
valves. This requirement shall
not De interpreted to prohibit the
lieu OF leak-protector valves for
each vat or pocket, provided
leak-protector valve Is installed
in the inlet line, and the line Is
self-draining from the valve TO
each vat or pocket. Leak-protector
valves shall be provided at the
outlets Of all 30-minute tubular
be left disconnected until at least
30 minutes after the filing Of the
holder is begun. (b) Installation
conditions Inlet and outlet con-
nectionS, other than through close
coupled valves, shall not enter or
leave the holder below the level
where the inlet line enters the
holder above the milk level, and
in which the inlet line may be
Submerged and thus prevent its
complete emptying when the inlet
valve is closed, the inlet shall be
provided with an automatic air
relief located either At the valve,
or elsewhere, and so designed as
to function in every closed posi-
ton Of the valve, In the case
Of vat and pocket holders, Q vent
may be provided BY drilling a hole
at least one-eiRhth Of an inch
in diameter In each vat or pocket
inlet pipe, below the vat or pocket
cover but. above the maximum
valves shall be installed in the
proper position. TO assure the
proper functioning Of the Leak
diverting device. Inlet valves shall
not be located in vertical pipe
lines. unless they can be so in
stalled that one OF the groove
StSseulS 70 ~ tnS lowest leNel OF
the valve. Pipelines between the
inlet valve and the holder shall
be as short as possible, and shall
be sloped to drain. All valves
shall be so located as to be readily
accessible for cleaning. S-6.5 .234
Operation Of leak-protector valves
Existing single-Vst installations, II
not provided with leakprotector
inlet valves, shall be disconnected
from the raw-milk supply during
the. holding and emptying periods,
and, II not provided with leak
protector outlet valves, shall be
disconnected from the outlet piping
during the filling, heating, and
holding periods. Existing multiple
vat installations and Commute
tubular holders, which are not
provided with leak-proteetor inlet
or outlet valves, shall be dis
connected as required in para
graph SO .5O4 .s33 Csl. All outlet
valves shall be kept fully closed
during the flling, heating, and
holding periods, and all inlet
valves shall be kept fully closed
during the holding and .emptyinE
vided with connections for bac-
tericiual treatment. as required
above, shall, Immediately before
the diScharge Of pasteurized milk,
be given bacterieidal treatment
for at least minutes at 100
Fahrenheit or more. SO .5O4 "a.
Airspace heating. SO 5O4 .241. Air
shall be provided and used in
pasteurization watts and pockets 70
Keep the atmosphere above the
milk At q temperature at least Sc
Fahrenheit higher than the milk
temperature during the heating
period CUP to a maximum Of
14S1 and than the required tenn
the holding period, This shall not
apply at 30-minute pasteuriZation
OF such milk products as butter
milk and chocolate milk when
done at high temperatures, pro-
yided an airspaee thermometer is
installed sS required In para
srapn s.o,5O4. .243, and such
perature Of at least 14s' Fahren-
heit throughout the holding period
S-6.5O4 gag. Design. II steam Is
admitted into the holder, the steam
line shall be provided with a trap
which shall prevent the discharge
OF water into the milk. S-6 .504 .243,
Thermometers, In all cases, an
accurate, sanitary-type. air-tem-
shall be installed (see paragraph
S-6.5O4 .13). The accuracy OF such
thermometers shall be tested by
the Director Of Public Health upon
installation. and every 6 months
thereafter. SO. .504.25. Vat and
pocket covers. S-6.504 .25I. De-
sign. The covers Of pasteurization
vats and pockets shall be so con-
strueted that nothing on ton
thereof will drop into the vat in
either their open or closed posi-
tions. SIS .5O4 .252. Cover open-
ings. All openings through the
cover shall have a raised edge TO
prevent drainage into the Open
ING, Conoensation-diverting aprons
snan oe provided on all pipes.
Thermometers, and other equip
ment extending through the cover
ana on which condensation may
iorm' unless q watertight joint
gith the cover is provided.
ers Of al watts and pockets shall
ton. s-6.504.3. High-Temperature
Short-Ttme Continuous-Flow Pas
teurtzation. The following speci-
neationS shall be met by all equip
ment used in the pasteuri7ation
Of milk at 1902 Fahrenheit for
is seconds: S-6.504 81. Mainte-
nance Of pasteurization tempera-
ture. Each high-temperature short
with q dependable thermostatjc
control so designed and set as
to cause every particle OF milk
ana milk product to be heated
automatically to at least 1906
Fahrenheit, and shall comply with
the following; S-6.504 4.3ll. Mix
now stop required. Each such sys-
tenn shall be equipped with an
automatic milk-doW stop OF the
diversion type which complies with
paragraph S-6 504 Is. S-6 .5O4 3l2.
Setting Of milk-fow-stop control
ler: The control mechanism Of the
milk-how stop shall be set and
sealed. so that the forward flow
Of milk cannot start unless the
temperature az the controller bulb
continue during descending tenn
peratures when that temperature
is below 1902 Fahrenheit. A seal
snail be applied By the Director
OF Public Health after testing,
and shall not be removed without
Immediately. notifying the Direc-
tor OF Public Health. The sys-
no milk can be bypassed around
the how-stop bulb. which shall
not be removed from its proper
position during the pasteurization
process. The cut-in and cut-out
milk Temperatures shown BY the
indicating thermometer shall be
determined daily bY the pasteuriz-
ing mix plant operator. and en-
tered upon the recording thermom-
eter chart S-6.5O4.3i3. Manual
, switches. Manual switches con-
tr2lllng pumps, homogenizerS, or
other devices which produce
now through the holder shall
be wired In such q manner that
the circuit Is completed only
when the milk is above 1902
Fahrenheit. OF the diversion valve
S-6.504 .314. Location Of milk
fiow stop. The fiow diversion
valve shall be located downstream
from the holder. The holder shall
be so designed that no portion
between the inlet and the now
stop is heated. The fiow-stop-
controller bulb shall be located
diversion valve. s-6.504 .3l5. Di-
version line The pipeline from
thf diversion port of the flow
diversion valve shall be self
draining, and shall be free Of
restrictions or valves. unless such
are so designed that stoppare
So 504.316. Heat loss in holder
The holder shall be designed so
that the simultaneous tempera-
ture difference between the hot
test and coldest milk in any
flow cross section at any time
during the holding period will
not be greater than IL Fahren-
heit. Holders with milk exposed to
the atmosphere shall be equipped
with airspaee heaters (see para
graph S-6.504 4.24. S-6.504. 80. In
dieating and recording thermo-
meters. S-6.5O4 .321. Location
and required readings. An indi-
eating thermometer shall be
1Oratad ct the hu1h ~ fbn =.