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Report on the CCTV Inspections of the Surface Water Drainage … · 2020-06-01 · 3 Drain Cleaning and CCTV Inspections 3.1 Overview The planning of the CCTV surveys was divided
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Report on the CCTV Inspections of the Surface Water Drainage System - 2019
Issue date:
Irish Distillers Pernod Ricard Site Projects 2013 IE0311192-30-RP-0010, Issue: A Customer Project Number: Customer Document Number:
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Report on the CCTV Inspections of the Surface Water Drainage System - 2019
Irish Distillers Pernod Ricard Site Projects 2013 IE0311192-30-RP-0010, Issue A
IE0311192-30-RP-0010_A_01.DOCX Page 4 of 16 DRAFT - Unchecked - May Be Incomplete
1 Introduction
It is a requirement of Irish Distillers Pernod Ricard’s (IDPR) IPPC Licence (Reg. No. P0442-02) for their Midleton Plant that all surface water drains within the facility’s production area are inspected by CCTV surveys at least once every three years. In compliance with this requirement, Dyno-Rod (Crowley Services Ltd. Cork) carried out the initial surveys under the management of PM Group (PMG) in August and September 2019.
This report details and analyses the findings of the surveys. In addition, it makes recommendations on a programme of works required to rehabilitate or replace the drains currently identified as defective in order to ensure the continued integrity of the surface water drainage system.
The survey sheets are included in the Appendices and a tabulated and graphical representation of the results for both service and structural defects are provided in the attachments.
Also included in the attachments is a table summarising all results and recommendations.
2 Defects and Condition Grades
2.1 Standards
The standard that was followed in reporting on the condition of the surface water drains is based on the UK Water Research Centre’s (WRc) publication “Manual for Sewer Condition Classification Fifth Edition”. This is considered industry Best Practice and has been adopted in the British Standards and the European codes to provide a common language of exchange of this information.
2.2 Defect Classifications
Observed pipe defects are classified into two distinct categories and graded individually in severity of defects from Grade 1 to Grade 5. These categories are:
- Service Defects - A defect that does not affect the integrity of the pipe but could lead to a structural defect if not addressed. E.g. penetrating roots.
- Structural Defects - A defect which affects the integrity of the pipe e.g. a broken pipe.
In the Dyno-Rod reports in the Appendices, defects have been given corresponding colour codes relating to their classification. The grading and associated colour codes are based on the worst defect observed in the individual pipes. This colour coded system was used in the graphical representation of the results on DR-0075 and DR-0076 in the attachments.
Section 2.3 provides a description for each classification code from 1 to 5.
2.3 Defect Grade Descriptions
Defects are classified into 5 distinct grading codes
Grade 1 (Green)
No defects were observed or defect observations without damage, for example lateral joints.
Conclusion: No action required
- Grade 2 (Brown)
Constructional deficiencies or occurrences with insignificant influence to tightness, hydraulic capacity or static pressure of the pipe. Example; Wide joints, minor deformations of plastic pipes, minor corrosion.
Conclusion: Rehabilitation can be scheduled long term.
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- Grade 3 (Blue)
Construction deficiencies diminishing static safety, hydraulic capacity or tightness e.g. cracks, minor drainage obstructions such as calcite build-up, protruding lateral connections, minor damages to pipe walls, individual root penetrations, corroded pipe walls etc.
Conclusion: Rehabilitation is necessary medium term – within 3 to 5 years.
- Grade 4 (Orange)
Constructional damages with insufficient static safety, hydraulic capacity or tightness. E.g. axial/radial pipe bursts, pipe deformations, visually noticeable infiltration/exfiltration, cavities in pipe-wall, severe protruding laterals, severe root penetrations, severe corrosion of pipe wall etc.
Conclusion: Rehabilitation is urgent and has to be completed within 1 to 2 years. Necessity for emergency operations to be examined.
- Grade 5(Red)
Pipe is already or will shortly be impassable. Example; collapsed pipe, deeply rooted pipe or other drainage obstruction. Pipe loses water or danger of backwater in basement etc.
Conclusion: Rehabilitation is urgent and short-term. In order to prevent further damage, necessary temporary spot repair has to be conducted on emergency level.
3 Drain Cleaning and CCTV Inspections
3.1 Overview
The planning of the CCTV surveys was divided into three phases.
Phase 1 included the surveying of all accessible drains within the production area and the identification of drains with both low levels of siltation (up to 15%) and high levels of siltation (from 15% to almost full blockages). Phase 1 was carried out in August and September 2019.
Phase 2 of the works included the cleaning and resurveying of all drains with siltation levels up to and including 15%. In addition, during this phase, an effort shall be made to locate previously inaccessible/buried manholes for the purpose of making them available for surveying in phase 3. Phase 2 was carried out in January/February 2020.
Phase 3 includes cleaning of pipes with siltation levels of over 15% and the removal of individual objects and blockages. Once cleaned the pipes will be resurveyed to identify any previously unseen defects. Also in this phase any previously inaccessible drains will be surveyed where possible. Phase 3 is planned for February/March 2020.
3.2 Phase 1
Phase 1 of the works was carried out in August/September 2019 and covered the major extent of the total surface water network within the production area. The results of these surveys are included in Appendix A – Phase 1 CCTV Inspections.
A total of 152 No. pipes covering approximately 2,623 lin. m of surface water drain was surveyed phase 1.
Out of these a total of 43 No. pipes were identified of having siltation levels of up to 15% and a total of 21 No. pipes were identified of having siltation levels of over 15%, roots intrusions, coarse settled deposits or pipe impedances due to foreign objects. Some pipes could not be surveyed completely in this phase due to both heavy blockages and obstructions and/or protruding lateral pipe connections. These were identified for future phase 3 cleaning and rehabilitation works respectively.
Table 3.1 lists all pipes surveyed in phase 1 where defects were observed. All other pipes surveyed are deemed to be defect free (Grade 1).
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Table 3.1 Phase 1 Summary of Defect Gradings Following Phase 1
Number Dyno-Rod Report
Section No
USMH DSMH Diameter Service Grade
Structural Grade
Status
1 8 S320A S320C 450mm 4 1 Clean-Phase 3
2 11 S319 S318A 600mm 3 1 Clean-Phase 2
3 12 S318A S318 600mm 3 1 Clean-Phase 2
4 13 S318 S317 600mm 1 4 Repair
5 17 S51 S50 225mm 5 4 Clean-Phase 2/Repair
6 18 S50 S49 225mm 4 4 Clean-Phase 2/Repair
7 19 S49 S309 225mm 3 4 Clean-Phase 2/Repair
8 20 S309 FwRT 225mm 2 1 Remove Roots
9 21 A310A S48 600mm 3 4 Clean-Phase 3/Repair
10 23 S54 S312A 600mm 4 4 Clean-Phase 2/Repair
11 24 S315 S54 600mm 4 1 Clean-Phase 3
12 25 S313 S312A 450mm 3 1 Clean-Phase 2
13 30 S44 S308 600mm 4 1 Clean-Phase 3
14 31 S308 S308 600mm 3 1 Clean-Phase 2
15 33 S312B S310 600mm 3 1 Clean-Phase 2
16 36 S311 S310A 300mm 3 1 Clean-Phase 2
17 37 S311 S307 300mm 2 1 Clean-Phase 2
18 38/41 S47 S43 375mm 4 4 Clean-Phase 2/Repair
19 39 S46 S47 375mm 5 1 Clean-Phase 3
20 40 S45 S47 250mm 3 1 Clean-Phase 3
22 42 S43 S308 375mm 2 2 Clean-Phase 2/Repair
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Number Dyno-Rod Report
Section No
USMH DSMH Diameter Service Grade
Structural Grade
Status
23 48 S280.5 S282 600mm 2 1 Clean-Phase 2
24 50 S291 S13 450mm 2 1 Clean-Phase 2
25 51 S13 S288.1 450mm 3 1 Clean-Phase 2
26 52 S294 S291 450mm 3 1 Clean-Phase 2
27 54 S290 S291 450mm 2 1 Clean-Phase 2
28 61 AJ287.2 Mainline 100mm 3 1 Clean-Phase 2
29 68 S287 S286 150mm 5 1 Clean-Phase 3
30 70 S297 S296 225mm 3 1 Clean-Phase 2
31 71 S293 S296 225mm 2 1 Clean-Phase 2
32 73 S14 S13 150mm 1 5 Repair/Replace
33 78 S280.2 S280.1 150mm 3 1 Clean-Phase 2
34 86 S277 S277A 450mm 3 1 Clean-Phase 2
35 89 S274 S276 250mm 3 1 Clean-Phase 2
36 90 S273 S274 300mm 2 1 Clean-Phase 2
37 91 S200 S273 150mm 3 1 Clean-Phase 2
38 96 S22 S24 150mm 5 1 Clean-Phase 3
39 97 S21 S22 150mm 5 1 Clean-Phase 3
40 98 S23 S22 150mm 5 1 Clean-Phase 3
41 99 S24.3 S25 375mm 1 4 Repair
42 100 S24.2 S24.3 375mm 3 1 Clean-Phase 2
43 101 S24.1 S24.2 375mm 3 1 Clean-Phase 2
44 104 S27 S301 450mm 3 1 Clean-Phase 2
45 105 S301 S328 450mm 3 1 Clean-Phase 2
46 108 S302 S27 450mm 3 1 Clean-Phase 2
47 109 S326A S326 450mm 2 1 Clean-Phase 2
48 110 S303A S326A 450mm 2 1 Clean-Phase 2
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Number Dyno-Rod Report
Section No
USMH DSMH Diameter Service Grade
Structural Grade
Status
73 139/152 S42 S34 450mm 1 4 Clean-Phase 3/Repair
74 153 S34 S45 200mm 4 1 Clean-Phase 2/Remove
Roots
75 154 S28 S24 150mm 4 1 Clean-Phase 3
76 155 S77 S78 150mm 4 1 Clean-Phase 3
77 156 S81 S82 150mm 4 4 Repair
78 157 S80 S81 150mm 3 4 Repair
79 158 S82 S83 150mm 2 4 Repair
3.3 Phase 2
Phase 2 of the works was started in January 2020 and was completed in February 2020. This phase included the cleaning and resurveying of pipes with siltation levels of up to 15% cross-sectional area loss.
In total there were 43 No. lines identified for cleaning and resurveying as part of this phase.
Furthermore during this stage, previously inaccessible manholes on the network will be located or uncovered in order to provide the capability to fully complete the survey work for phase 3.
Following the cleaning works, a number of pipes listed in table 3.1 are now classified as grade 1-defect free. Table 3.2 lists the remaining pipes requiring attention following the completion of phase 2.
The results of the phase 2 cleaning and resurveying are included in Appendix B – Phase 2 CCTV Inspections.
Table 3.2 Summary of Remaining Defects Following Phase 2 Cleaning and Resurveying
Number Dyno-Rod Report Section No.
Phase1/Phase2
USMH DSMH Diameter Service Grade
Structural Grade
Status
1 8 S320A S320C 450mm 4 1 Clean-Phase 3
2 13 S318 S317 600mm 1 4 Repair
3 17/12 S51 S50 225mm 1 4 Repair
4 18/9 S50 S49 225mm 1 4 Repair
5 19/8 S49 S309 225mm 1 4 Repair
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6 20 S309 FwRT 225mm 2 1 Remove Roots
7 21 A310A S48 600mm 3 4 Clean-Phase 3/Repair
8 23/6 S54 S312A 600mm 1 4 Repair
9 24 S315 S54 600mm 4 1 Clean-Phase 3
10 30 S44 S308 600mm 4 1 Clean-Phase 3
11 31 S308 S308 600mm 3 1 Clean-Phase 3
12 38/41/3/14 S47 S43 375mm 1 4 Repair
13 39 S46 S47 375mm 5 1 Clean-Phase 3
14 40 S45 S47 250mm 3 1 Clean-Phase 3
15 42/17/18 S43 S308 375mm 1 2 Repair
16 68 S287 S286 150mm 5 1 Clean-Phase 3
17 70 S297 S296 225mm 3 1 Clean-Phase 3
18 71 S293 S296 225mm 2 1 Clean-Phase 3
19 73/74 S14 S13 150mm 1 5 Repair/Replace
20 78/45 S280.2 S280.1 150mm 2 1 Repair
21 96 S22 S24 150mm 5 1 Clean-Phase 3
22 97 S21 S22 150mm 5 1 Clean-Phase 3
23 98 S23 S22 150mm 5 1 Clean-Phase 3
24 99 S24.3 S25 375mm 1 4 Repair
25 113 S304 S303B 450mm 3 1 Clean-Phase 3
26 117 S203 S202 100mm 5 4 Clean-Phase 3/Repair
27 118/119 S203 S204 225mm 1 4 Repair
28 120/121 S204 S205 300mm 1 4 Repair
29 123 S205.2 S205.1 450mm 1 4 Repair
30 126 S207 S210 450mm 1 4 Repair
31 127 S210 S211 450mm 5 4 Clean-Phase3/ Repair
32 128 S207A S207 300mm 1 4 Repair
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33 133 S214 S213 300mm 1 4 Repair
34 135 S227 S226 225mm 1 4 Repair
35 137 S225 S224 225mm 1 4 Repair/Replace
36 140/22 S36 S37 225mm 1 4 Repair
37 141/142/23 S39.3 S36 225mm 1 4 Repair
38 143 S39.1 S39.2 150mm 4 1 Clean-Phase 3
39 144 S218 S217 150mm 2 1 Repair
40 145/147 S217 S215 150mm 5 4 Clean-Phase 3/
Repair
41 149 S212 S211 400mm 5 1 Clean-Phase 3
42 153/16 S34 S45 200mm 4 1 Clean-Phase 3/
Remove Roots
43 154 S28 S24 150mm 4 1 Clean-Phase 3
44 155 S77 S78 150mm 4 1 Clean-Phase 3
45 156 S81 S82 150mm 4 4 Repair
46 157 S80 S81 150mm 3 4 Repair
47 158 S82 S83 150mm 2 4 Repair
48 139/152 S42 S34 450mm 3 4 Clean-Phase3/ Repair
3.4 Phase 3
Phase 3 of the works is planned for February/March 2020. This phase will include the cleaning and resurveying of pipes with more than 15% siltation/deposits and the removal of obstructions in pipe inverts. Obstructions to be removed as identified in phase 1 include removal of bricks, rubble from pipe inverts and the removal of concrete cores deposited from improperly made lateral connections. In addition, the previously inaccessible drains as identified in phase 1 and located/made accessible in phase 2 will be surveyed and reported on.
In total there are xxx additional lines to be surveyed as part of phase 3. Table 3.3 lists the pipes identified as having structural defects following the completion of all survey and cleaning works.
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Table 3.3 Summary of Pipes with Defects Requiring Repair
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4 Recommendations for Pipe Rehabilitation or Replacement
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The final results of the CCTV surveys incorporating the conclusion of all surveys is given in the attachments
DR_0075- 2019 Surface Water Drainage CCTV Inspections- Service Defect Gradings
defective connectionsClean and develop repair/replacement programme Construction
30/01/2020-Service Grade
1Repairs Required 4 1
MH S309 FwRT 10.88 225 Concrete 20 21/08/2019 1 2 Fine roots intrusion Removal of roots and repair can be scheduled long term General Cleaning Scheduled
masonryClean and Remove Blockage General Feb 2020- Phase 3 Cleaning Scheduled
MH S211A MH S219A 11.27 450 Concrete 151 04/09/2019 1 1 No Comment No Recommendation None No Defects 1 1
MH S34 MH S45 11.73 200 Concrete 153 16 04/09/2019 1 4 Settled deposits 10%, fine roots Clean and Remove roots General Feb 2020- Phase 3 31/01/2020- Grade 4Cleaned- Fine Roots to be
removed (Phase 3)1 4
MH S28 MH S24 16.22 150 uPVC 154 04/09/2019 1 4 Settled Deposts:50% Clean and resurvey General Feb 2020- Phase 3 Cleaning Scheduled
MH S77 MH S78 24.15 150 uPVC 155 04/09/2019 1 4 Settled deposiits:30% Clean and resurvey General Feb 2020- Phase 3 Cleaning Scheduled
MH S81 MH S82 33.31 150 Concrete 156 04/09/2019 4 4 Defective Connection Top Hat Repair Structural
MH S80 MH S81 39.8 150 Concrete 157 04/09/2019 4 3 Defective Connection Top Hat Repair Structural