Spinel Water Treatment Plant HACCP Plan
Step
CCP
Potential Hazard
2. Alum Dosing
CCP 1
Biological
Contamination
(Alum
Overdosing/ Alum
Under dosing)
1.
2.
3.
4.
5.
2. Alum
Dosing
(cont.)
CCP 2
Biological
Contamination
(No Alum)
Spinel Water Treatment Plant HACCP Plan
Preventive
Measures
Operating
Procedures
Monitoring
Volume
Checking
Approved
Supplier
Specific
Gravity Testing
1. Redundancy
2. Maintenance
Program
3. Ordering
Procedures
4. Contingency
5. Manual
Operation
6. MSDS
Critical
Limit(s)
> 15 NTU in
raw water
< 2,000 L
(1,000 L in
each tank)
Monitoring
Corrective Action
1. Operator
2. Daily
3. Check raw water turbidity
in the laboratory using
spectrophotometer
manufacturer’s procedures
4. Record results on Weekly
Operations Sheet and WTP
database
If turbidity > 15 NTU:
1. Operator
2. Re-sample and re-test
If turbidity still > 15 NTU:
3. Do jar test using procedure
Coagulant Jar Test
4. Adjust dose rate using
procedure Calculation of Dose
Rate from Jar Test
5. Record results on
Coagulant Jar Test Log
Sheet
6. Consider changing source
water
7. Complete Incident /
Improvement Form
1. Operator
2. Daily
3. Check level of alum using
the visual gauge
4. Record results on Daily
Readings 3 and WTP database
If < 2,000 L Alum available:
1. Operator
2. Order alum (fast track)
3. Check delivery date and
time
4. Calculate usage rate to
ensure sufficient supply
5. If not adequate, seek
contingency source
Page 1 of 4
7. SCADA
8. Flowmeter
7. Filtration
CCP 3
Biological
Contamination
(Ineffective
Filtration due to:
• Algae
• Loss of Media)
8. Back
Washing
CCP 4
Physical
/Chemical
contamination
(Backwash Failure
due to:
• Clear Water
Storage < 9.5 ML)
9. Ammonia
dosing
CCP 5
Biological
contamination
(under dosing/no
ammonia)
Spinel Water Treatment Plant HACCP Plan
1. Daily
Backwashing
2. Operation
Procedures
3. Visual
Inspection
Alarms
4. Turbidity
Meters
5. Maintenance
Schedule
6. Daily
Sampling
1. Operating
Procedures
2. Manual
Operation
1. Operating
Procedures
2. Daily
Monitoring
3. Volume
6. Record of purchase in
purchase order book
7. Record of calculations on
Weekly Operations Sheet
8. Complete Incident /
Improvement Form
> 0.5 NTU
for 15
minutes
1. Operator
2. CITEC alarm
3. Recorded on CITEC
If turbidity > 0.5 NTU:
1. Operator
2. Initiate backwash
3. Record activity in diary
4. Investigate cause of high
turbidity
5. Complete Incident /
Improvement Form
< 9.5 ML in
Clear Water
Storage
1. Operator
2. CITEC continually
3. Recorded on CITEC
If Clear Water Storage < 9.5
ML:
1. Operator
2. Notify Water Quality
Coordinator
3. Investigate why CWS <
9.5 ML
4. Initiate backwash, if
necessary
5. Record activity in diary
6. Implement Demand
Management Plan, if
necessary
7. Complete Incident /
Improvement Form
If ratio is out of required
range:
1. Operator
2. Check plant and equipment
3. Adjust accordingly
Chlorine:
Ammonia
Ratio
between 3:1
and 4:1
1.
2.
3.
Operator
Weekly
Drawn down test on
Ammonia according to
Ammonia Dose
Page 2 of 4
Biological
contamination
(overdosing)
4.
5.
6.
10. pH
Correction
CCP6
Physical
Contamination
high pH/turbidity
(overdosing)
Biological
contamination
(overdosing)
7.
1.
2.
3.
4.
5.
6.
7.
11. Chlorination
CCP 7
Biological
Contamination
(Under dosing/ No
Chlorine)
Spinel Water Treatment Plant HACCP Plan
Checking
Approve
supplier
Specific
Gravity Test
Flow Based
Dosing
On-site spares
Operating
Procedures
Monitoring
Redundancy –
including an
extra lime
dispensing
system
Volume
Checking
Approved
Supplier
Maintenance
Calibration
1. Operating
Procedures
2. Monitoring
3. Volume
Checking
4. Approved
Supplier
5. Alarms
6. Maintenance
7. Automatic
Change-over
8. Manual Dosing
Calculation
Record results on
Weekly Operations
sheet and WTP
database
4. Draw down test on
Ammonia according to
Ammonia Dose Calculation
5. Record activity in diary
6. Complete Incident /
Improvement Form
Operator
Daily
Check Lime Volume
over time according to
hydrated Lime Drop
Test
Take sample from Clear
Water Storage and
check if pH>8.5
Record results on
Weekly Operations
Sheet and WTP
database
If pH >8.5
1. Operator
2. Re-sample and re-test
If pH still>8.5:
3.Check plant and equipment
4. Adjust accordingly
5. Record activity in diary
6. Calibrate pH meter if
necessary
7. Record on Calibrating
Merck WTW pH Meter
8. Check total chlorine using
spectrophotometer
manufacturer’s procedures
9. Record results on Weekly
Operations Sheet and WTP
database
10. Complete Incident /
Improvement Form
1. Operator
2. Daily
3. Take sample from Clear
Water Storage and check
Chlorine residual according to
spectrophotometer
manufacturer’s procedures
4. Record results on Weekly
Operations Sheet and WTP
database.
5. SCADA Alarm at 1.7 mg/L
Total Chlorine
If Chlorine Residual < 1.5
mg/L:
1. Operator
2. Re-sample and re-test
If Chlorine Residual still <
1.5 mg/L:
3. Check chemicals and plant
and equipment
4. Repair and adjust
accordingly
5. Initiate manual dosing if
necessary
4.
> 8.5pH
1.
2.
3.
4.
5.
< 1.5 mg/L
Total
Chlorine
Page 3 of 4
6. Record activity in diary
7. Complete Incident /
Improvement Form
Spinel Water Treatment Plant HACCP Plan
Page 4 of 4