dairy manual htst 1385739381061 eng
TRANSCRIPT
1
Chapter 11 - H.T.S.T. Pasteurization Tasks
Dairy Establishment Inspection Manual
HTST System Flow
Task Inspection Criteria
1.11.01.01 Up-To-Date and Accurate (HS=3)
A. Flow schematic
Available; easily accessible
Complete o all HTST components
Accurate; up-to-date
1.11.01.02 No Cross-Connections (HS=1)
A. HTST system free of cross-connections between:
For acceptable segregation between raw and pasteurized products
o refer to the specific requirements in Chapter 11
For other applications (i.e. washes or Amini-washes@ while connected to product lines)
o refer to Appendix 19 - 10 for assessment of applications
B. HTST actual piping verified with schematic
Critical Control Records 1
Task Inspection Criteria
1.11.02.01 Temperature and Time Requirements(HS=2)
A. A representative sampling of plant's records must be assessed
Complete records for all products processed
Minimum holding time and minimum temperature required must be met. See text for pasteurization requirements
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Critical Control Records 2
Task Inspection Criteria
1.11.02.02 Process Control Records (HS=2)
A. A representative sampling of plant's records must be assessed
STLR processing records provide the followingpermanent data on every 12 hour chart:
o plant name and address or registration numbero date, shift and batch number where applicableo STLR identification when more than one is
usedo product type and amount of product processedo identification of CIP cleaning cycles, including
Amini-wash@ cycleso reading of indicating thermometer during
processing. This reading must never be lowerthan recording thermometer reading
o cut-in/cut-out temperatures at the beginning ofproduction and when a new divert temperatureis selected (for production runs of > 12 hours anew cut-in/cut-out is not required when thechart is changed)
o record of time the flow diversion device is inthe forward flow position
o unusual occurrences (include reason and timeof occurrence)
o signature or initials of the operator
Meter Based Timing System flow records provide thefollowing information on every 12 hour record: (ifapplicable)
o plant name and address or registration numbero dateo pasteurizer numbero
oproduct processed
movement between forward and divert flowo synchronized time with STLR charto frequency or event pen informationo signature or initials of the operatoro unusual occurrences
No overlapping of recordings Record is replaced daily Satisfactory follow up for out of specification findings
and documentation of actions taken
1.11.02.03 Retention of Process Control Records (HS=3)
A. Time-frame
Minimum of one year period
As determined by responsible regulatory agency; or
Until the finished product has been consumed (if morethan one year)
Constant Level Tank
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Task Inspection Criteria
1.11.03.01 General Conditions (HS=3)
A. General Inspection Criteria for Dairy Plant Equipment
B. Specific Areas of Interest
Stainless steel construction
Clean and good condition
1.11.03.02 Design (HS=2)
A. Requirements
Air shall not be drawn in pasteurizer when operating at maximum capacity of FCD
o Raw product to drain to the outlet before the outlet becomes uncovered. Could be accomplished by:
o bottom of the tank sloped by at least 2% to the outlet
o top of the outlet pipe is lower than the lowest point in the tank
1.11.03.03 Cover (HS=3)
A. Requirements
Removable o independent cover; or o inspection port
All openings flanged upwards and covered
Sanitary umbrella deflector on pipelines (excluding directly clamped lines) that enter through the cover
Used during processing
1.11.03.04 Overflow Point/Diameter (HS=2)
A. Overflow Point
Lower than the lowest point of raw regenerator
Satisfactory type o rim of the tank; or o top of outlet (below the rim)
Diameter at least twice that of the largest raw product inlet pipe
1.11.03.05 Airspace (HS=2)
A. Leak detect, divert, CIP line/spray ball, water and milk recycle lines
Terminate and break to atmosphere
Break must be at least two pipe diameters of the largest return line above maximum overflow point
1.11.03.06 Level Control Device (HS=3)
A. Requirements
Automatic device
Sanitary design and construction
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Booster Pump
Task Inspection Criteria
1.11.04.01 General Conditions (HS=3)
A. Requirements
Clean and in good condition
Centrifugal type
Entrapment of the product in the by-pass line is precluded by:
o close coupled by-pass connections, or o design of the valve permitting slight
movement of the product through the by-pass line, or
o other equally effective system
No interference of by-pass valve with free draining of raw regenerator to CLT
o fail safe, normally open position during divert
1.11.04.02 Location (HS=2)
A. Requirements
Located between the CLT and inlet of raw regenerator
1.11.04.03 Interwiring (HS=2)
A. Requirements
Only operates when o FCD is operating o proper pressure differential is achieved in the
regeneration section o FDD is in forward flow (both divert and leak
detect valve in forward flow)
Tested upon installation and at least every 6 months thereafter, and when changes occur
o appropriate records of testing on file
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Regeneration
Task Inspection Criteria
1.11.05.01 General Conditions (HS=2)
A. Heat Transfer Plates
Stainless steel or other corrosion resistant material
Sanitary design
Clean and good condition o no visible pinholes o equipped with leakage grooves o gaskets in good condition (not compressed or
show signs of wear) o no leaks at plate gaskets during operation o no milk remnants, milkstone or foreign
particles
Plant records to indicate annual pinhole testing or more often if required to ensure integrity
o document the cause of failure (e.g. age compression, metal fatigue), action taken to correct failure, plate replacement
1.11.05.02 Shutdown Capability (HS=2)
A. Design
Raw product inlet at the lowest point of regenerator o second regenerators of dual regenerator
systems many hae inlet at top or bottom
Drain holes (at least 1.59 mm or 0.0625") drilled in deflector plates (if present).
o If deflector plates are back to back the upstream drain hole is large enough to allow for CIP cleaning
Free draining to CLT o no valves or pumps that block the flow to CLT o provision for free draining pathway from the
second stage regenerator during shutdown (applicable to two stage regenerators)
1.11.05.03 Pressure Differentials (HS=2)
A. Operation (System with booster pump)
Pressure on the raw side of the regenerator must always be lower by 14 kPa (2 p.s.i.) than pasteurized side as confirmed by PDC
B. System without booster pump
Appopriate system layout C. Milk-to-heat transfer medium-to-milk type regenerators
Pressure on the raw side/media side of the regenerator must always be lower by 14 kPa (2 p.s.i.) than the pasteurized side as confirmed by a PDC
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Flow Control Device (FCD)
Task Inspection Criteria
1.11.06.01 General Conditions (HS=2)
A. Design
Proper type of system o positive pump or o homogenizer or o Meter Based Timing System
B. Condition
Stainless steel or other corrosion resistant material
Clean and in good condition
C. Location
Upstream from holding tube
D. Operation
Cannot be excluded from the system during operation
No back-flow through FCD in the event of a system shutdown
Mechanical wear will not increase capacity (flow rate)
1.11.06.02 Set and Sealed (HS=1)
A. Procedure
Set at legal holding time obtained at the fastest flow rate with no back pressure i.e.
o all appropriate components sealed, ie. pumps, belts
o at the maximum operating capacity o with separators by-passed o zero-valve pressure on the homogenizer o vacuum equipment operating at maximum
vacuum if it is downstream of Flow Diversion Device (FDD)
Sealed at fastest flow rate giving legal hold time
Checked upon installation and annually thereafter o appropriate records of testing on file
Re-evaluated and re-sealed (if necessary) after any alterations or repairs. Refer to the written text for the exception for when belts are replaced.
B. Records
Accurate and complete o include information of all alterations or repairs
Available
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Flow Control Device (FCD)
Task Inspection Criteria
1.11.06.03 Fail Safe (Operation) Capability (HS=2)
A. General Conditions
Inter-wired properly with FDD and Safety Thermal Limit Recorder (STLR) micro-switches
o FCD only operates when FDD is in safe forward or fully diverted position
Time delay relay (if present) o not more than 1 sec
No by-pass line during processing
Evaluated upon installation, at least every 6 months thereafter and whenever micro-switch is re-set or replaced
o appropriate records of testing on file
B. Homogenizer Used as FCD
No by-pass line during processing
C. Meter Based Timing System used as FCD
Must have appropriate controls (See Appendix 19 - 4) o High flow alarm: divert flow occurs when flow
rate is higher than the value at which holding time was measured
o Low flow/Signal loss alarm: divert flow occurs upon low flow or signal loss
o Flow cut-in and cut-out checked and recorded o Alarm pen tracks with flow recorder pen o Interwired with FDD to diver during alarm
conditions
Evaluated upon installation, at least every 6 months thereafter and when alterations occur
o appropriate records of testing on file
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Heating/Cooling
Task Inspection Criteria
1.11.07.01 General Conditions - Heating (HS=2)
A. Heat Transfer Plates
Stainless steel or other corrosion resistant material
Sanitary Design
Clean and good condition o no visible pinholes o gaskets equipped with leakage grooves and in
good condition (not compressed or show signs of wear)
o no leaks at plate gaskets during operation o no excessive mineral scale on "medium" side o no gasket particles and other foreign debris
Plant records to indicate annual pinhole testing or more often if required to ensure integrity
o document the cause of failure (e.g. age, compression, metal fatigue), action taken to correct failure, plate replacement
1.11.07.02 HeatingMedium HS=3)
A. Quality
Culinary steam/hot water
Boiler chemicals/additives must be dairy safe and approved
Appropriate follow-up documented
1.11.07.03 General Conditions - Cooling (HS=2)
A. Heat Transfer Plates
Stainless steel or other corrosion resistant material
Sanitary Design
Clean and good condition o no visible pinholes o gaskets equipped with leakage grooves and in
good condition (not compressed or show signs of wear)
o no leaks at plate gaskets during operation o no excessive mineral scale on "medium" side o no gasket particles and other foreign debris
Plant records to indicate annual pinhole testing or more often if required to ensure integrity
o document the cause of failure (e.g. age, compression, metal fatigue), action taken to correct failure, plate replacement
1.11.07.04 Pressure Differentials Cooling (HS=2)
A. Cooling Medium Pressure Monitored
Must be at least 14 kPa (2 p.s.i.) less than product pressure during forward flow. During diverted flow and shut down conditions, higher pressure is maintained on the pasteurized product side
Checked daily and recorded
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Task Inspection Criteria
Requires either an automated mechanism or written program
If automated mechanism must meet the following: o cooling medium stopped or diverted and the
cooling medium side vented to atmosphere: during forward flow, when the product pressure on the pasteurized product side drops to within 2 psi of the cooling medium side of the plates and during diverted flow andshutdown conditions.
o If product vacuum breaker is in use, venting of medium side shall be at an elevation below that of the product vacuum breaker
o demonstrate to regulatory authority
If there is no automated mechanism, establishment
has a written program which includes the
following: o person responsible, what is done, how it is
done, frequency, records to be kept and results of monitoring, verification procedures, actions taken for deviant situations, parameters of acceptability/unacceptability, preventative measures.
o records of pressures recorded a minimum of twice a day during production (at beginning and end of run).
o microbial cooling media checks of at least once per week per week
o pH testing of cooling media at least once a week
o visual cooling media checks at least once per week
o pinhole testing and plate teardowns once every six months
o plate replacement program.
1.11.07.05 Cooling Medium (HS=3)
A. Quality
Cooling media checked at least monthly for microorganisms (e.g. psychrotrophs, coliforms (or at least once per week depending upon establishment controls)
Cooling medium chemicals/additives must be dairy safe and approved
Records of cooling water additives and cooling media products used and microbial testing results
Appropriate follow-up documented
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Holding
Task Inspection Criteria
1.11.08.01 General Conditions (HS=3)
A. Holding Tube and Sensing Chamber
Clean and in good condition
Installed in correct location o after FCD with no intervening flow promoters o after heating section o prior to FDD
No portion of tube can be left out
Free of external heat source
If insulated, insulation must be easily removed to allow for proper inspection of the holding tubes
1.11.08.02 Slope and Support (HS=2)
A. Holding Tube
Continuous 2% upwards slope (including elbows)
Permanent support
1.11.08.03 Holding Time Provisions (HS=3)
A. Fitting(s)
Equipped with necessary fitting(s) for checking Holdingtime by salt conductivity test or acceptable alternative
Fittings located at: o the beginning (at the lowest point) of holding
tube and sensing chamber or an alternate fitting(s) upstream of FDD
1.11.08.04 Holding Verification and Records (HS=2)
A. Records
Evidence of holding time by salt conductivity test
Test conducted in both divert and forward flow (except when magnetic flow meter systems are used)
Test results converted to holding time for all products processed
B. Frequency
Upon installation, annually or after any change made tosystem Refer to the written text for the exception for when belts are replaced.
1.11.08.05 Sensing Chamber (HS=3)
A. Requirements
Maintains slope of holding tube
Indicator thermometer sensor and STLR hot milk temperature sensor in close proximity
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Task Inspection Criteria
1.11.08.06 Extended Hold (HS=2)
A. Conditions
Extension connection be close coupled
Extended hold line cleaned and sanitized regularly o records available
Extended hold cycle scheduled at the end of production
day or system rinsed before production run on short
hold cycle
If upstream of FDD: o records available o hold must have a continuous upward slope of
at least 2% o if a two speed FCD used and extended hold
used as legal hold, interwiring must ensure legal hold met (see explanation)
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Flow Diversion Device (FDD)
Task Inspection Criteria
1.11.09.01 General Conditions (HS=2)
A. Flow Diversion Device and Return Lines
Appropriate design
Clean and in good condition o plunger seals o valves and "O" rings o valve stem moves with ease
Clean and unrestricted air supply
Proper control panel o free of any device or switches that may
jeopardize the safety of the pasteurized product
Non-adjustable valve stem length o locking pin present, if necessary
No quick release couplings on air lines if external solenoids
Evaluated upon installation and at least every 6 months thereafter with appropriate records kept
1.11.09.02 Divert Line (HS=2)
A. Requirements
Separate free draining divert line to the CLT o free of any valves o identifiable and cleanable restrictor permitted
to ensure sufficient holding in divert flow
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Task Inspection Criteria
1.11.09.03 Leak Detect Capabilities (HS=2)
A. Single Stem FDD
Properly functioning and unobstructed leak detect ports
B. Dual stem FDD
Separate unrestricted free draining leak detect line to CLT or acceptable receptacle
Sight "glass" on leak detect line o vertical position o clear (no etching or cloudy)
1.11.09.04 Location (HS=2)
A. Requirements
Installed at highest point (end) of holding tube after thesensing chamber
1.11.09.05 Fail Safe Divert Capability (HS=1)
A. Divert Conditions
Valve response time from forward flow to divert not exceed 1 sec
Assumes divert at sub-legal temperature
Assumes divert at loss of electrical power, or air supply
B. Inter-wiring
Interwired with FCD. FCD and flow promoters to operate only when FDD is in safe forward flow or fully diverted position.
C. Records
Available; easily accessible
Tests performed upon installation and at least every 6 months thereafter or as required
o appropriate records kept
Satisfactory follow up on out of specification findings and documentation of actions taken
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Task Inspection Criteria
1.11.09.06 Time Delay Relays (HS=2)
A. Dual Stem FDD 1) General
1 second minimum flush time between the two valve stems (maximum 3 seconds where applicable)
Tests performed upon installation, at least once every 6 months and when seal on the time delay relays are broken and records kept
2) From PRODUCT to INSPECT Mode
FDD immediately diverts and all flow promoters (includes FCD) run down or are valved out.
3) From PRODUCT to CIP Mode
For a system where flow promoters (includes FCD) not operating during CIP o FDD immediately diverts and remains
diverted until flow promoters (includes FCD) have stopped or are valved out
o FDD then controlled by CIP mode
For a system where flow promoters (includes FCD) are operating during CIP o FDD immediately diverts at least 10
minutes o no pressure on regeneration during
divert (e.g. booster pump stopped) o FDD then controlled by CIP mode o refer to Appendix 19 - 10 for prevention
of chemical contamination during mini-wash
B. Meter Based Timing System as FCD
Diverts on high flow or low flow (above high set point or below low set point)
After safe flow established, minimum legal hold time delay before forward flow
Tests performed upon installation, at least once every 6 months, whenever seal on the flow alarm is broken and if changes occur and records are kept
1.11.09.07 Device Sealed (HS=2)
A. Requirements
Device must be sealed appropriately o solenoids, time delay relays and critical
microswitches
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Task Inspection Criteria
1.11.10.01 General Conditions (HS=2)
A. Requirements
Clean and in good condition 1) Mercury Type
Direct reading
No column splitting
Easy to read
Contained in corrosion resistant case 2) Resistance Temperature Devices (RTD)
Utilizing two separate RTD and verifying each other
Meets the design requirements in Appendix 19 -13
1.11.10.02 Location/ Accessibility (HS=2)
A. Requirements
Located in the temperature sensing chamber
Easily accessible
1.11.10.03 Specifications (HS=2)
A. Requirements
Column width magnified to an apparent width of at least 1.6 mm (0.0625")
Scale span of at least 14ºC (25ºF) including pasteurization temperature +/- 3ºC (5ºF)
Graduated in 0.25ºC (0.5ºF) divisions with not more than 4ºC (8ºF) per 25 mm (1") span
Protected against damage at 105ºC (220ºF)
No stem fitting threads exposed to product
At least 76 mm (3") from product contact surface of ferrule to sensing area of bulb
same unit of measure as the recording thermometer
1.11.10.04 Calibration/ Records (HS=1)
A. Calibration
Temperature accuracy
Thermometric response
Frequency of calibration (upon installation and at least once every 6 months)
Tests completed according to required methods and standards
B. Records
Available; easily accessible
Satisfactory follow up on out of specification findings and documentation of actions taken
o product safety assessment required
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Safety Thermal Limit Recorder (STLR)
Task Inspection Criteria
1.11.11.01 General Conditions (HS=3)
A. Requirements
Good mechanical and sanitary condition
Proper design o meets requirements of appropriate
agency or 3A requirements o moisture proof case o electrically operated
Records and frequency of servicing (at least once a year)
Absence of unidentified/unauthorized switches or devices that may jeopardize the safety of product
Covers in place
Flow indicating lights (green for forward and red for divert) operating
Cut in/cut out independent of temperature recording arm movement.
Probe o protected against damage at 105oC
(220oF) o no stem fitting threads exposed to
product o at least 76 mm (3 inches) from product
contact surface of ferrule to sensing area of bulb
1.11.11.02 Diversion Capabilities (HS=2)
A. Set Points
Single set point o At the highest product temperature
Multiple set points o diversion control capability for all
products run (tested upon installation and once every 6 months thereafter)
o set point indicator B. Pasteurized and Unpasteurized Products
Dual temperature divert switch
Pasteurized product processed first
Entire HTST system washed and sanitized prior to pasteurized product processing
1.11.11.03 Cut In/Cut Out (HS=1)
A. Requirements
Legal cut-in/cut-out temperature set
Inaccessible mechanism for altering cut-in/cut-out temperature
B. Operation
Cut-in and cut-out checked and recorded daily at
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Task Inspection Criteria
start up and when new set-point selected (see the left page written text for definition of additional scenarios when cut-in and cut-out is required)
1.11.11.04 Pens (HS=2)
A. Temperature Recording Pen
Easily accessible adjustment screw
Functional (checked daily)
Thickness of pen not > 0.7 mm (0.025")
B. Frequency Pen
Functional (checked daily)
Thickness of pen not > 0.7 mm (0.025")
Tracks with temperature recording pen or follow the same time line
C. Third Pen
Present on dual/multiple diversion STLR includes pasteurized/heat treated milk STLR
Different colour ink
1.11.11.05 Charts (HS=3)
A. Design
Positive drive mechanism equipped with a system to prevent slippage
Proper charts o correspond with chart # displayed on
identification plate of STLR o circular charts graduated for 12 hours
maximum
Appropriate chart scale span, graduations and time scale divisions
o chart span at least 17ºC (30ºF), including diversion set point +/- 7ºC (12ºF)
o graduated in 0.5ºC (1ºF) scale divisions spaced at least 1.6 mm (0.0625”) apart at the diversion temperature +/- 0.5ºC (1ºF), unless ink line is thin enough to distinguish from chart line, then spacing can be 1 mm (0.040 inch) apart
o time scale divisions not more than 15 minutes, spaced at least 6.3 mm (0.25") apart at the diversion temperature +/- 0.5ºC (1ºF)
Same unit of measure as the indication thermometer
Tests performed upon installation and once a year thereafter and appropriate records kept
B. Chart speed
Circular chart to rotate one revolution in not more
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Task Inspection Criteria
than 12 hours
1.11.11.06 Accuracy (HS=2)
A. Records 1) General
Available; easily accessible
Tests performed upon installation, at least annually or as required
Satisfactory follow up on out of specification findings and documentation of actions taken
2) Required Tests and Accuracy
Temperature accuracy o shall be accurate within +/- 0.5ºC (1ºF)
at divert temperature set point +/- 3ºC (5ºF)
Time accuracy o recorded time shall not exceed true
elapsed time
Recording thermometer check against indicating thermometer o recording thermometer not higher than
indicating thermometer
Thermometric response o shall not exceed 5 seconds
1.11.11.07 Sealed (HS=2)
A. Requirements
Must be sealed o including electrical contact point type
1.11.11.08 Programmable Logic Controllers and Computers (HS=1)
A. Installation
Micro-processor controlled outputs o shall not circumvent any operation of Public
Health Controls (e.g. booster pump, FCD, FDD etc.) when FDD mode switch is in process position
o maybe implemented to operate Public Health Controls (e.g. booster pump, FCD, FDD, etc) when FDD mode switch is at CIP position after the 10 minute time delay.
o maybe implemented to operate other components (e.g. regenerator by-pass valves, pasteurized product regenerator back pressure valves, hot water set controls, recycle valves, CLT controls, cold milk temperature controls, MBTS product flow controls, heating and cooling medium controls etc.) under all operating conditions
B. Testing
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Task Inspection Criteria
Test procedures used to confirm proper operation of all required public health controls shall be available. An example of test procedure is outlined in Appendix 19 - 5
C. Documentation
Complete and accurate documentation of inter-connecting wiring, air piping and applicable programs must be available
Microprocessor logic defined by program listings and descriptive narrative text
D. Access sealed (All)
Microprocessor access ports, modem ports and input/output terminals must be sealed to prevent unauthorized changes or tampering.
The control panel holding the solenoids for the divert valves must be sealed
A reliable third party may connect remotely to the PLC to repair something in the system providing it is not a permanent connection and there is documentation showing date of entry, purpose of re-programming, who did it, who verified repair, seal breakage, re-sealing and new seal number
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Pressure Differential Controllers (PDC) /Gauges
Task Inspection Criteria
1.11.12.01 General Conditions (HS=3)
A. Pressure Differential Controllers
Sensors clean and in good mechanical condition
Proper design o easy dismantling of sensors for inspection o indicating section housed in appropriate
control panel o it is considered acceptable to use a legal
PLC to control the pressure differential.
B. Gauges
Clean and in good condition
Accurate and calibrated
Only applicable between raw and pasteurized product when no booster pump used
1.11.12.02 Location (HS=2)
A. Regenerator - HTST System With Booster Pump
Requires PDC
Interwired with booster pump
Raw product sensor between the booster pump and the raw product inlet to the regenerator
Pasteurized product sensor at, or downstream from, pasteurized product outlet of regenerator
Split regenerator o each section is monitored and controlled by
its own pressure differential controller B. Cooling
Sensors at the cooled milk outlet and cooling fluid inlet or other acceptable location
1.11.12.03 Accuracy (HS=2)
A. Pressure Differential Controller
Procedures established to regularly test (upon installation and at least once every 6 months)
B. Gauges
Checked for accuracy at least every 6 months
1.11.12.04 Sealed (HS=2)
A. Pressure Differential Controller
Must be sealed
1.11.12.05 Records (HS=2)
A. Accuracy
Available; easily accessible
Satisfactory follow up on out of specification findings and documentation of action taken
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Recording Thermometer
Task Inspection Criteria
1.11.13.01 General Conditions (HS=3)
A. Requirements
Clean and in good condition
Protected against damage at 105ºC (220ºF)
Moisture proof
Positive drive mechanism equipped with a system to prevent slippage of chart
Equipped to produce a continuous permanent record of all pertinent information (i.e. time of day and temperature)
Thermometer scale graduated in units not greater than 1ºC (2ºF)
Accuracy +/- 0.5ºC (1ºF)
Records and frequency of servicing (at least once a year)
Pasteurized Product Discharge
Task Inspection Criteria
1.11.14.01 Elevation (HS=2)
A. Pasteurized Product Discharge Piping
At least 30 cm (12") above the highest potential raw product elevation
1.11.14.02 Vacuum Break (HS=2)
A. At end of discharge piping at highest point, a break to atmosphere
No restrictions (e.g. valves, pumps etc.)
1.11.14.03 Vacuum Breaker (HS=2)
A. Equipment
Clean and in good condition
Functions in operation o plunger or core moves freely
Installed in a manner so that the air intake is not a source of contamination (See text for further explanation).
23
Homogenizer
Task Inspection Criteria
1.11.15.01 General Conditions (HS=3)
A. General Inspection Criteria for Dairy Plant Equipment
B. Specific Areas of Interest
Stainless steel product contact surfaces
Clean and in good condition o filters o homogenizer valves o pistons o seat valves o pressure gauges
Appropriate gauges
1.11.15.02 Recirculation Line (HS=2)
A. Homogenizer Downstream of FCD; Greater Capacity
Recirculation line o unrestricted o between inlet and outlet of homogenizer o no shut-off valve o check-valve allowed o diameter greater or equal to supply
1.11.15.03 Relief Line (HS=3)
A. Homogenizer Downstream of FCD; Less Capacity
Installed upstream of FDD
Sanitary pressure relief line o runs from inlet side of homogenizer back to
CLT o have a pressure relief valve
1.11.15.04 Interwiring (HS=2)
A. Homogenizer of Lesser Capacity than FCD:
Operates only when FCD engaged
Equipped with a time delay relay of 1 sec
Tests performed upon installation, at least once every 6 months or when micro-switch re-set or replaced and records kept
24
Separator/Clarifier
Task Inspection Criteria
1.11.16.01 General Conditions (HS=3)
A. General Inspection Criteria for Dairy Plant Equipment
B. Specific Areas of Interest
Clean and in good condition o bowl o discs o disc covers
1.11.16.02 Location (HS=2)
A. Options
Upstream of FDD o upstream of any FCD
Downstream of FDD
1.11.16.03 Non-Flow Promoting (HS=2)
A. Conditions
Non-flow promoting device whenever FCD is not operating
o could be achieved by fail safe valving out o (by-passing) the separator o normally closed valve located downstream of
product o Test performed upon installation, at least once
every 6 months and when micro-switch is re-set or replaced and records kept
1.11.16.04 Vacuum Break (HS=2)
A. Separator/Clarifier Downstream from FDD
Vacuum breaker at the inlet to the separator o no restrictions (e.g. valves, pumps etc.)
25
Flavour Adjusting Equipment (FAE)
Task Inspection Criteria
1.11.17.01 General Conditions(HS=3)
A. General Inspection Criteria for Dairy Plant Equipment
B. Specific Areas of Interest
Installed and operated in conjunction with HTST provided FAE will not
o interfere with the detection of, or stoppage of, the forward flow of unpasteurized milk
o influence the proper pressure relationship within the regenerator
o reduce the holding time below required minimum
o contaminate and adulterate the product
1.11.17.02 Properly Valved Out (HS=2)
A. Culinary Steam Used Downstream from the FDD Steam added only when FDD is in forward flow automatic steam control valve, or automatic solenoid shut off valve
B. Water Feed Line Used
No back-up and overflow of water and/or condensate from vacuum condenser into product vacuum chamber
o automatic safety shut off valve and o high level sensing device in condenser
C. FAE Downstream from FDD
No back-up and overflow of water and/or condensate from vacuum condenser into product vacuum chamber
No negative pressure
A normally closed shut-of valve o downstream from vacuum breaker
Both installed in line between FDD and inlet to vacuum chamber
o directly downstream from FDD
No lowering of pasteurized milk level in the regenerator during divert or shut down
Automatic check valve or positive type shut-off valve and
Vacuum breaker o downstream from valve
Both installed in line between outlet from downstream vacuum chamber and pasteurized milk inlet to regenerator
26
Task Inspection Criteria
1.11.17.03 Steam Ratio Control (HS=3)
A. Culinary Steam Introduced into Product 1) Automatic Ratio Controller
Sensorso outlet of FDD (prior to steam addition) o in vacuum chamber or its exit
Automatically adjusts operating vacuum in vacuum chamber
2) Any other system which precludes adulteration
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Stuffing Pump/Flow Promoting Devices
Task Inspection Criteria
1.11.18.01 General Conditions (HS=3)
A. General Inspection Criteria for Dairy Plant Equipment
B. Specific Areas of Interest
Clean and in good condition o impellers o back plates
Painted exterior o clean o free of flaking paint and rust
1.11.18.02 Proper Installation/ Operation (HS=2)
A. Requirements
No interference with the draining of the system when the system shuts down
Interwired so that the pump or devices shut(s) off whensystem shuts down or when FDD causes the FCD to shut down
o Test performed upon installation, at least once every 6 months and when micro-switch is re-set or replaced and records kept
Not influence the proper pressure relationship within the regeneration section
Not reduce the holding time below the required minimum
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Supplementary Milk Solids/Milk Fat Injection System (In-Line Standardization)
Task Inspection Criteria
1.11.19.01 General Conditions (HS=3)
A. General Inspection Criteria for Dairy Plant Equipment
B. Specific Areas of Interest
Clean and in good condition
Stainless steel product contact surfaces
Positive displacement pump or centrifugal pump with a MBTS
1.11.19.02 Proper Installation/Operation (HS=2)
A. Requirements
Pasteurization holding time is not reduced below the required minimum.
Composition (fat, solids) cheesemilk does not affect the minimum pasteurization time and temperature requirement as per 1.11.02.02
Proper pressure differential maintained within the regeneration section.
System freely drains should the system shut down.
Not interfere with the detection, or stoppage of forward flow of unpasteurized milk.
B. Injection Location
Directly into CLT, or
Between CLT and FCD o injection point between outlet of last raw
regeneration section and FCD o proper check valve installed upstream of
injection point o flow rate not greater than FCD o proper design of injection valve: fail safe, spring-
to-close, air-to-open, block and bleed design with full port open to atmosphere between the HTST isolation seat and pump when solids/milk fat not being injected
C. Interwired or equivalent system to not operate when:
FCD is not in operation
FDD is in divert mode or the system is in recycle mode
FDD is in inspect mode
If the system is controlled by computers or programmable logic controllers they must meet the requirements of 1.11.11.08.
Tests performed upon installation, at least once every 6 months and when micro-switch is re-set or replaced and records kept