1. THE INSTITUTION OF ENGINEERS, SRI LANKA
PROFESSIONAL REVIEW EXAMINATION
2022
Eng. K.Pirahas
B.Sc.Eng(Hons)
Irrigation Engineer,
Irrigation Department, NP
AM-12827
2. OUTLINE OF THE PRESENTATION
1. Introduction.
2. Application of five core competences.
3. Design of Nithakai Tank.
4. Carrier Development Action Plan
5. Photo Gallery
3. SUMMARY OF RECOGNIZED TRAINING AND RESPONSIBLE EXPERIENCE
SER NO DESCRIPTION
Duration /
(Months)
01 Training Prior to Graduation 06
02 Recognized Training After to Graduation on Construction 44
03 Recognized Training After to Graduation on Design 19
A Summary of Recognized Training 69
04 Responsible Experience on Construction 68
05 Responsible Experience on Design 06
B Summary of Responsible Experience 74
C=A+B Summary of Recognized Training and Responsible Experience 143
1. INTRODUCTION
5. 2. PERFORMANCE ON FIVE CORE COMPETENCES
2.1 Understanding of Engineering Principles
2.2 Practical Application of Engineering Knowledge
2.3 Managerial Involvement
2.4 Communication and Interpersonal Skills
2.5 Professional Conduct
6. 2.1 Understanding of Engineering Principles
Design of Nithakai Kulam
Operation Study
Hydrology Study (Unit Hydrograph Method)
Hydraulics Design for Spillway – Augment by 2ft
Structure Design - Abutment
Collection of data of Iranamadu Downstream (D3-7 off RB Main Canal)
Collection of Existing Structures & Condition
Prepare Drawings with Levels & Collected Data
Proposal for Renovation
Proposed Drawings & Estimates
Submitted as a Book for Project Director
7. 2.1 Understanding of Engineering Principle Con..
Application of Works through New Technology VIBER/WHATSAPP.
Design & Construct a Minor Tank
Department of AP&H seek technical assistant to Construct a Minor
tank in their Farm
Analysis Catchment area using Q GIS
Using Rational Formula to Calculate Inflow & Determine the Spill
Length
Preparation of Estimate & Carryout the Procurement activities
Implement the Project & Store Water
8. 2.2 Practical Application of Engineering Knowledge
Repair of Vavunikulam Major Tank Sluice Gates Water Level in FSL.
Vavunikulam Major Tank at FSL 26’, The Rod which connects the
Sluice Gate Broken
Hired Divers & inspect the actual problem
The Existing Pin Cannot removable from Gate
Proposed a “U” Clip and connect the new Rod with Gate.
Issued Water for Cultivation & Repair fully after Water Issue
9. 2.2 Practical Application of Engineering Knowledge
Arrest Piping Through Palayamurukandy Tank
A Piping (2”) Observed in Palayamurukandy Reservoir
Temporary Filter Provided and Measure the Flow
Dying in the Several Places at Upstream
Observed Dye in the Piping flow
Inspection in the Upstream & Find out the Upstream Place
Excavate a Trench in the upstream
Place & Compact by Clay Material
Attended the Piping Section when water level goes down.
11. 2.2 Practical Application of Engineering Knowledge
Introduce OFC Cultivation in Vavunikulam Lowland Area
Considerable Rainfall received after yala Seeding
I Calculate the Balance Water & Find out 400 Acs of OFC Cultivable
Discuss With GA & Arrange a inter Yala Meeting During COVID Lock down
Mostly Black gram Cultivated in Low Land & Harvested (350kg/Ac)
Farmers Get income 200,000/Ac
Next Season the OFC in Low Land increased to 600 Acs by the result of this.
Measuring Excess Cultivation in Vavunikulam
In 2019, Farmers cultivated more than Meeting Decision in Yala
Water Scarcity raised due to excess cultivation for tail end Farmers
Measure the Cultivation using GPS with the help of FOs & Tos.
The water issue re-arranged on Time Basis
The 400 acs of excess cultivation too saved by the time basis issue
The excess cultivators fined in next Maha
The Measured Document compiled & used to define cultivation area
12. 2.3 Managerial Involvement
Operation & Maintenance of 12 Major/ Medium Schemes
Managed 12 Schemes with 11,400 Acs
Managed Office administration with 40 staffs
TO: 15 Nos DO: 5 Nos MSO: 3 Nos ML: 13 (36)
Managed 26 FOs and Farmers under 12 tanks
Preparing Master Plan for Clearing of Tank Bunds by MLs
& Executed
Organize Shramadana Campaigns with FO’s, Sri Lanka
Army
Attended Emergency works during Rainy Season
Taken Precautionary action during Flood Situations.
13. 2.3 Managerial Involvement
New Version of Bethma Cultivation in Vavunikulam 2022 Yala
Vavunikulam Yala was Cultivated in Share Basis (3 AC lot get 1 Ac Yala)
In 2022, we introduce the selection of Cultivable lands by Canal basis.
Tail end Farmers gratitude ID that They Cultivated first time Yala in their own Lands
0
1000
2000
3000
4000
5000
6000
7000
8000
Production(mt)
Production
Normal Bethma
0
500
1000
1500
2000
2500
3000
3500
toikahd
eilKiw
ngj;kh
eilKiw
Harvested
Extent
(Ac)
Harvested Extent
Normal Bethma 0
1
2
3
4
5
6
7
8
Water
Usage
(ft/Ac);
Tank Duty
Normal Bethma
14. 2.3 Managerial Involvement
Management of Significant Engineering Works
Perform as Engineer to the Contract for Works implement under various fund in
Vavunikulam Division.
Managed the Contract works executed under the Division
More than 20 Works per year nearly 50 mn of Local Funds
Foreign Funded projects such as CSIAP, ASMP, IWWRMP
Perform as ARE in Iranamadu Head works Project - Rs.2400 mn
Implementation of Konayankulam Tank – Force Account Rs.10 mn
Implementation of Poovarasankulam Lift Irrigation – PVC Pipe line Rs.45 mn
Rehabilitation of Ampalaperumal Head Works Rs 35 mn
Rehabilitation of Maruthankulam Head Works Rs.17 mn
15. 2.4 Interpersonal Skills
Interpersonal Skills as DIE in Vavunikulam Division
Attended Cultivation Meetings, DCC, DAC, Progress Review Meeting represent
Irrigation Engineer’s Office
Coordinate Different Stake Holders Such as Farmers, Contractors, Religious
Leaders, Military, Police, Other Government agencies & Politicians.
Coordinate Precaution measures before NE monsoon & attended emergency
precautions with help of farmers & Military.
Sharing of Water to Drinking Water Supply
A request from NWSDB to share the water (800ac.ft/yr) from Vavunikulam Tank
Farmers opposed to share the water initially.
I proposed Karumpulliyan tank which is a feeder tank of Vavunikulam which have
a own capacity of 900 ac.ft.
I explained the farmers regarding the CKD patients in that area & importance of
sharing as without much reduction in their Cultivation & Convinced them.
As NWSDB’s existing water tank is located near this tank, They too agreed.
16. 2.4 Interpersonal Skills
Undermining of CO spill in Maruthankulam
A undermining in CO Spill was observed in Maruthankulam.
I Coordinate with DS, Disaster Management, Farmers & Downstream Tank IE &
Military.
Attended to Prevent the undermining but LB abutment was collapsed.
Make a sand bag barrier & keep 4’ of water to save the Paddy cultivated.
During the April Rainfall Season increased the temporary barrier height & keep 6’
water.
Cultivate & harvested 60 acs of Paddy in that yala Season.
Carryout the design & Close the CO Spill & extended the already available
Natural Spill in next year
Keep the Water at FSL in 2022 & Cultivate Full extent of Yala.
18. 2.5 Professional Conduct
Professional Conduct in my Carrier
Instruct & ensure the Staffs with Personnel Protective Equipment at Site.
Used Safety sign boards at the Construction site.
Blocked the Vavunikulam Tank bund access road for Public with the approval of
DCC after an accident at Bund.
Carryout a Legal action against unauthorized cultivation at Kalvilan Kulam
Fined for excess cultivation in Vavunikulam as per Cultivation decision.
Follow the Certificate Course in Procurement, Served as TEC Chairman in
Department, Predishiya Sabha, Divisional Secretariat , Adopt Government circulars
& Procurement Guideline & Manual in evaluation of Bids.
I Submit a Technical report regarding Construction of minor Tank on the request of
DCC Chairman.
President of Vavunikulam Sivan Kovil For Last 3 Years.
19. 2.5 Professional Conduct Continued…
Involvement with IESL
An Active member of IESL Kilinochchi District Center in 21/22.
Currently Perform as Secretary of IESL Kilinochchi District Center.
Currently perform as Chairman of Building Sub Committee of IESL Vadakkin
Chapter
Publish a Paper in 2022 Transection of IESL Vadakkin Chapter
Publish a book of “Vavunikulam Yala Success Story” during 2022/23 Maha
meeting on behalf of Department.
20. 3. Design of Nithakai Tank
Basic Details of Nithakai Tank
Province - Northern
District - Mullaitivu
I.E. Division - Muthu Iyan Kaddu
D.S. Division - Maritimepattu
River Basin - Paladi Aru
Acre - 370 Ac
Catchment Area - 11.78 sq.mile
The Tank was Constructed in 1980s &
abandoned due to Conflicts.
21. 3.1 HYDROLOGICAL DESIGN
Rainfall for 100 Yrs
Return Period Inflow hydrograph
Determination of BTL
Unit Hydrograph
Flood routing to determine
HFL for critical storm
Checking for over
topping for PMP
Calculation of PMP
Operation Study for
the existing
acreage and FSL
22. 3.2 HYDRAULIC DESIGN
1.Determination of Ogee Profile
y/H0 = - K (x/H0)n
2. Design of Stilling Basin
Froude number,
FF = VF/(gYF)0.5
3. Determination of Stilling Basin Thickness
23. 3.3 STRUCTURAL DESIGN
Propose the dimensions of the retaining wall for the abutment of spill structure.
Check the over turning moment.
Check for sliding.
Check for ground bearing pressure.
Calculation of bending reinforcement of wall.
Calculation of minimum reinforcement of wall.
Design of heel.
Design of toe.
Reinforcement calculations of spilling section and cushion
24. 3. Design Output
Description Unit Existing Proposed
Full Supply Level ft.asl 43.94 45.94
Afflux ft 2.2 2.08
High Flood Level ft.asl 46.14 48.02
Bund Top Level ft.asl 47.24 52.00
Length of CO Spill ft 400 400
Length of Natural Spill ft - 400
Dimension of RB Sluice ft 1Dia 4*4
Dimension of LB Sluice ft 2 Dia 2 Dia
Capacity ac.ft 2,502 3,376
Area at FSL ac 462 556
25. 4. CAREER DEVELOPMENT ACTION PLAN
Short Term Goals
– Complete my Professional Review Exam to get Charter.
Medium Term Goals
– Carryout a Master Degree
– Writing Technical papers to Share experiences
– Became as Middle Level Manager in Water Sector
Long Term Goals
– Using my Knowledge in Irrigation System to Contribute to Nation
– Became as Engineering Expertise
“Pay Back to Nation what I Got from Free Education”
