1 - AS 3993-2003 EQUIPMENT FOR THE PASTEURIZATION OF MILK AND OTHER LIQUID DAIRY PRODUCTS-CONTINUOUS-FLOW SYSTEMS
4 - PREFACE
5 - CONTENTS
6 - FOREWORD
7 - 1 SCOPE
7 - 2 REFERENCED DOCUMENTS
7 - 3 DEFINITIONS
7 - 3.1 Continuous-flow system
8 - 3.2 Non-potable water
8 - 3.3 Pasteurization
8 - 3.4 Potable water
8 - 4 MATERIALS
8 - 5 CONSTRUCTION AND CLEANING AND SANITIZING REQUIREMENTS
8 - 6 RAW-PRODUCT BALANCE TANK
9 - 7 HEAT EXCHANGER
9 - 7.1 General
9 - 7.2 Design
9 - 8 HEAT TRANSFER SECURITY
9 - 8.1 General
9 - 8.2 Security
10 - 9 DIFFERENTIAL PRESSURE CONTROL SYSTEM
10 - 9.1 General
11 - 9.2 Pressure sensors
11 - 9.2.1 Installation
11 - 9.2.2 Pressure sensors
11 - 9.3 Pressure differential failure
11 - 9.3.1 Automatic pressure failure
11 - 9.3.2 Regeneration section differential pressure failure
11 - 9.3.3 Heating/Cooling section differential pressure failure
11 - 9.4 Differential pressure data recording
12 - 10 FILTER OR CENTRIFUGE
12 - 10.1 General
12 - 10.2 Pore size of filters
12 - 11 FLOW CONTROL DEVICE
12 - 11.1 General
12 - 11.2 Types of timing control
12 - 11.3 Flow rate monitor
12 - 12 HOLDING TUBE
12 - 12.1 General
12 - 12.2 Design
13 - 12.3 Specification plate:
13 - 12.4 Fittings
13 - 13 FLOW DIVERSION DEVICE
13 - 13.1 General
13 - 13.2 Design
13 - 13.2.1 Valves
14 - 13.2.2 Proof of operation
14 - 13.3 Activation
15 - 13.4 Pasteurizing temperature sensor
15 - 13.5 Location of diversion device in relation to pasteurizing temperature sensor
15 - 13.6 Return to normal flow
15 - 13.6.1 General
15 - 13.6.2 Temperature
15 - 13.6.3 Flow rate
15 - 13.6.4 Pressure differential
15 - 14 TEMPERATURE CONTROL AND MONITORING SYSTEM
15 - 14.1 General
15 - 14.2 Location of temperature sensors
15 - 14.2.1 Pasteurization temperature
16 - 14.2.2 Outgoing product temperature
16 - 15 DATA RECORDING SYSTEM
16 - 15.1 General
16 - 15.2 Data to be recorded
16 - 15.3 Chart recorders
16 - 16 VACUUM PREVENTION
17 - 17 TEMPERATURE INDICATING DEVICE
17 - 18 PIPES AND FITTINGS
17 - 19 GENERAL SYSTEM
17 - 19.1 General system failure
17 - 19.2 System accuracy and repeatability
17 - 19.3 Control system response time
18 - APPENDIX A - VERIFICATION OF PASTEURIZER OPERATION
18 - A1 GENERAL
18 - A2 PASTEURIZATION REQUIREMENTS
18 - A2.1 Pasteurization of milk and liquid products
18 - A2.2 Test for pasteurization of milk
18 - A3 PASTEURIZER COMMISSIONING AND MODIFICATION
20 - A4 PASTEURIZER CHECKS TO BE CONDUCTED
20 - A4.1 Description of daily checks
21 - A4.2 Description of six monthly checks
21 - A4.3 Description of annual checks
22 - A4.4 Description of five yearly checks
22 - A4.5 Recording of pasteurizer checks
22 - A4.6 Thermometer calibration checks