Evening star., 1959-12-11
OFFICIAL NOTICES


at least the required pasteuri-
zation Temperature at al times
when the stop Is in the forward
fioW position. AL Thermometers
/ located on the holder proper shall
read at least the required paSteur--
OF not less than the following: lD
the required holding time. plus
the hlling time from the level OF
the recording g-thermometer bulb,
! where cooling Is begun in the
| holder simultaneously with, or
before. the opening Of the outlet
| valve; and tin the required
holding time plus the hlling time
and emptying time from and 70
mometer bulb, where eooling Is
either begun in the holder after
the opening OF the outlet valve,
or is done entirely outside the
holder. The filling and empty
ing times shall be determined
BY the Director Of Public Health
for. each vat so operated upon
which may affect these times.
An Thermometers located at the
inlet or outlet Of multiple
holder system, but not adjacent
to q milk-flow-stop bulb shall
read a. least the pasteurization
temperature at ell times when
m mug sa,s tnsTmomsEsrs noylGE Rast Ths GerSs tem
perature shown by the record
ing Thermometer shall be checked
daily by the pasteurizing milk
plant operator, and the readings
recorded on the instrument chart.
The recording thermometer shall
be kept adjusted so as at no time
to read higher than the indicating
WkrWNsr k-E knA 11N Ag-
surance OF minimum holding
period. Each automatic installa-
ton shall be so designed as TO
mkss Il impossible for any milk
to be DISCHARGED from the holder,
unless it has been held therein
for at least the required holding
time. Each manual-diseharge in
provide full required holding times
for every particle Of milk and
milk product. No milk or milk
product shall be added to batch
tyne holders after tAa art Of
the 1nolding period There shall
be no raw-nilk bypass around
the holders. Batch-type holders
shall be so constructed that the
milk from one pocket cannot
All automatic bateh-tyDe install |
lations shall be equipped with
a holder-timing device driven
by a motor the maximum attain
able speed Of which is such as
to assure at least the REQUIRED
holding time The motor may be
either a constant-speed. induc-
tion-type motor or, in lieu there
Of, any other type Of motor which /
is so connected with q governor
as to limit its maximum speed /
so as to insure the required hold !
ing time. The setting Of the
governor shall be sealed by the
Director Of Public Health. In all
cases, the motor shall be con-
means Of a common driveshaft, |
or by means OF gears, pullsys. |
or a variable -spsed drive, with |
the scar box, the pulley box, OF
the setting Of the variRble-speed 4
drive sealed by the Director of /
Public Health The holding time /
shall be tested BY the Director |
Of public Health upon installa-
tion, a'tef any alteration or re-
holding time, and whenever the
been broken SD .s04 .224, Special
requirements for tubular stream
fiow holders All tubular, or
equivalent, Streamhow holders
shall have all holder inlet and
outlet pumps connected with
above requirements for batch
type-holder timing devices. Such
holders shall slope continuously 1
upward IN the downstream di- !
rection to prevent the accumu-
iation OF air ar gases, or shall 4
be provided With 9 sanitary air
vent At the hish, point nearest
upstream from the holder but
downstrcam frcm the pump. The /
regsnerator and ths heater but /
shall not be sucked through the |
holders. All 30-minute tubular /
institutions shall comply with /
the following requirements: ta) /
The holder outlet shall be equipped |
with a valve which shall be kept
closed untq the holder IS full,
before the lapse Of 80 minutes
from the beginning of the filling [
tbl The holder outlet piping shall
r Sc 10 an elevation above the
top Of the holder tcl II there I
Is pump downstream as well
as Upstream from the holder, the
pumps shall be so connected that l
the downstream pump will stop
When the UPSTREAM pump stops. /
S-6 .504 225. rding-thermome- /
ter charts See subsection SO 6.504.5 |
So .504 %. Inlet and outlet valves /
and connections. SO .504 23l. Def /,
nitions. The following defini-
tions shall apply in connection /
With these specifeations Valve
Stop shall mean a guide which 1
permits turning the valve plug
closed position fi o'So9 Sos stoe toe sSail sSsi
mean a Stop so designed as
TO prevent turning the plug
Stop shall mean stop which
prevents turning the plug more
than l20 degrees. 1s0,, Stop
shall shall mean a stop which pre-
$50 degrees. but which permits |
two fully closed positions, each
diametrically opposite the other.
Valve With an Irreversible Plug
snail mean one in which the plug
cannot be reversed in the shell.
Single-quadrant Stop shall mean
3 9O' stop in q valve with an
irreVersioIe plug. Fully Open Posi-
ton shall mean that position Of
the valve seat which permits the
maximum fiow into or out Of the
holder. Closed Position shall mean
any position of the valve seat
which stops the fioW Of milk into
or out Of the holder. Fully Closed
Position shall mean that closed
position Of the valve seat which
requires the maximum movement
OF the valve to reach the fully
open position. Just-Closed Posi-
ton shall mean, in the case of a
plug-type valve. that closed posi-
ton of the plug in which the
now into or out Of the holder is
Just stopped, or any closed posi- l
tlon within five sixtv-fourths OF
an inch thereof as measured along
the maximum circumference Of
tss valve seat. Leakage shall be
taken TO mean the entrance Of un-
pasteurized milk into a pasteuriza-
tion holder during the holding or
emptying period, or the entrance !
OF unDasteurized milk into any
pdsteurized milkline at any time. !
Leak Protector Valve shall mean |
q valve which is provided with
leak-diverting device which. when |
the valve is in any closed posi- |
tion, will prevent leakage Of milk |
past the valve or, in the case Of
holders hlled or emptied bv sue |
tion or compressed air, will pre-
vent leakage of milk past the 1
valve or the leakage Of milk due 1
TO the leakage of air past the /
suction valve or the compressed !
ar valve, as the case may be. I
CloSe-Coupled Valve shall mean .
2 vslve the seat Of which is either .
nuSh with the inner wall Of the .
holder, or so closely, coupled that .
no mix in the valve. pocket is
more than IL Fahrenheit colder
than the milk at the center Of
the holder at any time during .
the holding period. Provided. /
Ihat in the absence Of tests to
valve which is not truly flush
shan be considered as satisfying
TINS requirement If ~ the holder
Is so flared that the smallest
dlameter OF the large end of the
fare is not less than the diameter
Of the outlet line plus the depth
of the fare, and CiD the greatest
distance from the valve seat to
the small end Of the fare is not
more than ] u times the diameter
OF the outlet line in the case of
existing equipment, and not
greater than the diameter in the
case OF newly installed equipment:
and Ciiil in the case Of vat and
he agitator are so placed as to
'7sure that milk currents will be
LWept into the outlet. SIS .504 232
Design of valves and connections I
All valves and connections shall
comply with the following REQUIRE
ments: (a) Construction. Valves
ond pipeline connections shall
meet the requirements Of sub
section S-6.5O3.1. Cbl Prevention
Of leakage. All pipelines and ft-
tlngs shall be so constructed and
located that leakage will not oc-
cur. Dependence shall not be
placed on soldered Joints to pre-
vent leakage. (cl Leak-Protector
Grooves. To prevent clogging, and
to promote drainage. all grooves
shall be at least three-sixteenths
Of an inch wide, and at least
three thirty-seconds Of an inch
deep at the center. Mating grooves
shall provide these dimensions
thrnnEhnllt thnlr rnrnhin.A innnth