EMERGENCY PREPAREDNESS PLAN FOR DAM
FOR SHEP DAM IN CASE OF UNPRECEDENTED FLOODS, INCREASE IN SILT
CONTENT, EARTHQUAKE, NATURAL CALAMITY ETC.
ALAKHNANDA HYDRO POWER COMPANT LTD.
(330MW) SRINAGAR HYDRO ELECTRIC PROJECT
SRINAGAR-246174 UTTRAKHAND
PREPARED BY:
CHECKED BY:-
Mr. SACHIN JAIN
Certified Energy Manager
Shift In-charge, SHEP, DAM
Mr. MANISH JAIN
Dy. General Manager
SHEP, DAM
(330MW) ALAKHNANDA HYDRO POWER CO. LTD
EMERGENCY ACTION PLAN FOR DAM
TABLE OF CONTENT
Item. No.
Title
1.0
1.1
1.2
2.0
2.1
2.1.1
2.1.2
2.1.3
2.2
3.0
3.1
Introduction
Emergency Action Plan
Notification Flow Chart
Responsibilities
Responsibilities for Evacuation, Rescue & Relief
Team at Srinagar Township and adjoining area
Team for maintenance of Electrical Supply
Security team for SHEP Dam
Approval of the Plan
Emergency Procedure
Emergency Identification, Evacuation &
Classification
Hydrologic
Earthquake
All other events
Assessment of Degree of Seriousness
Definitions of Alert Levels
Alert and Warning System
Notification Procedure
Event Report
Emergency Supplies and Resources
Material Availability
Machine Equipments availability
Labour
Engineer Expert
Alternate Source of Power
Emergency management Plan for SHEP Dam in case
of Cloud Burst & Floods
Reservoir Operation Levels
Spillway Gate Operation Schedule
Flood Discharge and Water Level Control
Dam Instrumentation and Other Observations
Silt Content
3.1.1
3.1.2
3.1.3
3.2
3.2.1
3.2.2
3.3
3.3.1
4.0
4.1
4.2
4.3
4.4
4.5
5.0
5.1
5.2
5.3
6.0
7.0
Page No
4
5
6
6
8
9
10
11
12
12
12
13
13
13
14
14
14
15
16
16
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17
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17
17
17
19
20
22
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EMERGENCY ACTION PLAN FOR DAM
LIST OF ANNEXURES
Sr.No
Title
Annexure
1
2
3
I
II
III
20
26
27
IV
V
29
30
VI
31
VII
32
VIII
33
IX
36
X
37
XI
38
XII
42
13
Gate Operation Schedule
Silt Content Table
Graph- Water Level d/s of dam axis
and discharge through gates
Images- Dam
Check list for Powerhouse
Shutdown
Contact Number of CWC Member
at Rudrapreyag Flood Control Room
Repair and Maintenance schedule
of upkeep different components of
SHEP Dam.
Form-1, Form-2 & Form- 3 for
different emergency conditions
Facility to made Available in Control
Room
Sample Warning Messages at
Different Situations
Notification Flow ChartInternal/External Alert
Contact Number of DM, SDM, Local
Panchayat.
Inter Telecom number- SHEP staff
XIII
43
14
Salient Features of SHEP
XIV
47
15
Area Capacity Curve
XV
50
16
Information Flow Chart- Internal
XVI
51
17
SHEP- Plant Layout
XVII
52
4
5
6
7
8
9
10
11
12
Page No.
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EMERGENCY ACTION PLAN FOR DAM
EMERGENCY PREPAREDNESS PLAN FOR SHEP DAM
1.0
INTRODUCTION
The present emergency action plan is designed for such a gigantic project which roosts prominently in
the world map of large dam. The Shrinagar Hydro Electric Project, located near Shrinagar town of
Tehri Garhwal and Pouri Garhwal District of Uttarakhand State, is constructed across Alaknanda river to
install 4 Power Units of 82.5 MW each (Total 330MW). This is a run of the river type project with
small storage. The project comprises construction of 90m high and 248m long concrete diversion dam
with 8 Nos. of spillway bays. 4 Nos. of under sluices are provided in spillway block Nos. 10 & 11 for
extraction of silt deposited. The main purpose of providing these under sluices in the spillway blocks is
to remove the deposited silt by opening the service gates and also to deplete the reservoir in case of
emergency.
Two nos. concrete lined head race tunnels each of 9.8m dia. with requisite Intake structure is provided
on the right bank of the dam. A reinforced cement concrete surface desilting basin with two
compartments, silt extraction system is provided on the d/s of HRT/supana nalla conduit with requisite
gated structure for extraction of silt deposited in silt chamber.
A 3 0 5 0 m long concrete lined Power channel is located on the d/s of desilting basin to carry clean
water. A concrete lined Forebay channel is provided immediately D/s of Power Channel upto Forebay
Intake Structure to carry clean water to Forebay Intake Structure/ Penstock liners. A lined by-pass
channel having bypass structure with gate is provided on the left bank of the Forebay channel to
automatically release its excess flow into the river in case of emergency closure of power house unit
to ensure safety of the power channel and Forebay channel in the moment of emergency. Forebay
Intake structure with 4 Forebay vents and 4Nos. of Penstock Liners is provided at the D/s end of the
Forebay channel to deliver clean water to 4 Power units.
The scheme utilized for power generation ahead of around 66 m on the river Alaknanda which can be
developed in the Shrinagar Valley.
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EMERGENCY ACTION PLAN FOR DAM
1.1
EMERGENCY ACTION PLAN
The emergency action plan is a necessity for the size & magnitude of a project like SHEP Dam due its
location in the seismically active zone and its typical geology, the potential emergency may arise out of
any situation involving flood due to breach or other structural failures as well as major floods without a
breach included. Other unusual situations may also arise by sudden overtopping of the dam, due to
existing spillway capacity falling short despite the best efforts to route the floods. Another factor
involves which may make the stability of the dam questionable i.e. unusual seepage or piping through
the dam or excessive uplift pressures beneath the dam body, sliding of the side slopes, embankments,
earthquake damages and land slide generated waves within the reservoirs, equipment mal functions,
foundation failure, and sabotage. Any one of these factors can trigger the disaster which may disrupt
normal human life in its established social traditional and economic system. The destruction of
environment caused by extra ordinary natural phenomena or human created hazards results into
hardship and suffering beyond redemption unless outside help is managed to the affected populace. A
hazard happens to be a perceived event which threatens both life and property. A disaster is the
realization of this type of hazard. It may turn out to be a disaster if proper management and mitigation
measures are not ensured to alleviate the suffering of the people of the affected area. Emergency
action plan in its ambit identifies potential emergency condition at a dam and specific pre planned
actions to be followed to minimize property damages and loss of life. Broadly the causes responsible
for such type of disasters may be classified as:
·
Hydrologic: such as flooding due to large releases, seepage slumping, piping,
embankment cracking, embankment deformation, movement of concrete section
(sliding or overturning), settlement failure of spillway gates or supporting structures,
outlet works, equipment malfunctions etc.
·
Earthquake: This natural cause which may have impact on the structural stability of the
dam resulting into embankment piping, cracking and movement of concrete section.
·
Other events: These include equipment failure security/criminal action, structural fire,
land slide, wild fires, storm of extreme intensity, cloud burst and sabotage etc.
Emergency action plan requires the project authorities to moderate or alleviate the problems at the
dam. It includes procedures and information to assist the authorities in issuing early warning and
notifications messages to responsible downstream. In this E.A.P. potential emergency or imminent
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emergency arising due to hydrologic reasons as classified earlier, has been considered as most likely
occurrence.
1.2
NOTIFICATION FLOW CHART
N.F.C. is a very important component of the E.A.P. which may meet emergency conditions.
·
Failure is imminent or has occurred.
·
Potential emergency situation has developed or is developing.
·
Flood is occurring or is expected.
The SHEP Dam was commissioned and dedicated to the nation on 14th April 2015. The dam since its
commissioning has been run so far by the ever vigilant administration. In the past the emergencies arising
out of the situations have been managed deftly and efficiently. The uncertainty about the future requires
the same vigilance and keen watch dog behavior as an emergent need of the times to come. The efforts in
the past have been fruitful as the running and the maintenance of the project has been carried out
according to the provisions of the codes and procedures as laid down in the operation and maintenance
manuals.
Despite all these good input and stringent efforts these may fall short of the likely natural aforesaid
unprecedented events. In order to cope with the future emergencies and the statutory compulsions of the
present time, four number alert level situation developing very slowly to situation of inevitable
catastrophe are summarized as below and find mention at Annexure-XI Also four number N.F.C. covering
the afore mentioned situations have been incorporated as annexure -X so as to pass on the information
about the developing situation to all responsible and concerned officers. The narrative information
supplementing the flow chart of different situation as above has been provided and appended at
annexure-XI with detail. Sample warning messages explicitly giving a brief specific situation are also
attached as annexure-X. An updated copy of the NFC is posted in all the offices of the officers having
responsibility in the EAP.
2.0
RESPONSIBILITIES
GVK administration is responsible for the upkeep and maintenance of SHEP Dam. The duties and
responsibilities are clearly defined in respect of the different divisional engineers placed under different
controls as per org. chart at Annexure-XVI. However in order to make emergency plan more effectively
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implemented, the personnel manning the project should be aware of the responsibilities at the time of
developing inevitable or imminent situations. Such situations demand that Engineer SHEP Dam &
Reservoir Management and Engineer, SHEP Mech., and Engineer, SHEP Electrical will be responsible to
perform pivotal role at site of emergency on the project. Above all Engineer SHEP Dam Division would be
handling the situation through the active participation of the other associates being overall in charge of
the SHEP Dam including all related vital structures. Engineer In charge, SHEP Dam would determine and
identify the triggering events which require emergency action and ensure deputing of responsible
personnel to meet such exigency. This may include incident of sabotage. In this case Engineer, SHEP Dam
Division will immediately inform Project Security Officer who will act promptly as per his duties and
responsibilities. The most likely situation expected to develop may be due to unprecedented high floods in
Alakhnanda catchment. He will immediately inform his high offices as per flow chart of External Alert
contained at Annexure-XI. He will also inform Engineer, SHEP Mech., Engineer Water Regulation and
others as per N.F.C. However, under certain special circumstances the duty of informing the developing
emergency or imminent emergency, the power may be delegated to Engineer Instrumentation. In an
inevitable mishap all agencies/partner states to whom water is being supplied or the districts of the states
through which the river Alakhnanda runs past will be informed about the exigency well in time as per
N.F.C. The list of the Deputy Commissioners of the district through which the river Alakhnanda transverses
its course has been appended as Annexure- XII, VI
The appended N.F.C. amply explains the route and destination to where the information of the mishap is
to be passed on. It may also be made imperative and followed in true sense that the flood discharging
facilitation/installations are manned by the efficient and the most experienced operators and the
procedures for their operation during such hours of emergency are strictly carried out in accordance with
the provisions of the O & M. The brief sequence of operation of the gates at SHEP Dam may be depicted
and the staff be made well aware of it. The periodic seminars or instructive training sessions may also be
made part of emergency plan. This will go a long way in handling the emergency situation aptly.
In an eventuality of grim flood situation such as inundation which may threaten the township or other
populated areas upstream or downstream of SHEP Dam, Engineer, SHEP Dam would notify promptly to all
departmental and civil authorities with the due approval of high authorities as per N.F.C. having concern
with the cropping up situation. This also includes peripheral districts on the rim of the reservoir
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(such as District Chamoli & Rudrepreyag of Uttrakhand). The list detailing the contact numbers of various
villages Sarpanches and N.G.O.’s upstream and downstream of SHEP have been appended as Annexure –
XII, VI.
2.1
RESPONSIBILITY FOR EVACUATION, RESCUE, RELIEF
To grapple with the unprecedented situation effectively, O & M Head, SHEP Dam who is a project head
would act swiftly on the basis of precise and accurate feed back information supplied by the Engineer In
Charge. SHEP Dam Circle and their under associate team members and ensure minimum panic amongst
his team officers and deploy the resources at his command to tide over the situation and have all the
possible help by the Co-ordination Relief Committee Pauri and call help from central agencies such as
I.M.D. CWC etc. will have to be informed as per N.F.C. as they have also the responsibility to discharge by
issuing warning messages through various media such as audio, visual & print media etc. Above all
another important action to be taken would be to get the water releases from Vishnu Preyag Power Plant
into river Alakhnanda through Engineer In charge, Vishnu Preyag Project Further to cope with the
developing/imminent / emergent situation such as unprecedented high floods as above, the officers
under various teams would study/handle the situation promptly without any hitch or hesitation. They
would be responsible to act with alacrity on identification and declaration of emergency of external alert
level (Red) in consultation / approval of high officers. A siren will be sounded in the presence of Engineer
In Charge Headquarter (EAP co-coordinator). The mode of sounding siren will be as follows:
·
In case of emergency, the duration and number of sound blasts will be 2 minutes BLOW 30
seconds BREAK for 4 times.
·
For all clear signals it will be continuous siren for 5 minutes which will be sounded upon the
direction of Engineer In Charge, SHEP Dam after the emergency is over.
It is also added that the sirens installed at SHEP Dam and in Township area would sound simultaneously
at the time of declaration of the emergency. The staff operating the sirens need be made well
conversant of the emergency sounding mode as described. The operation of the alarms will be checked
periodically. Its proper functioning will be done and confirmed by testing annually when the EAP is
reviewed every year.
2.
3.
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In case of a grim situation getting out of control and in which case the flooding becomes
inevitable, this team would arrange with all their mental resources at their command and ensure the
evacuation, rescue & relief of the persons entrapped inside/outside the dam or in any surrounding area.
The team with their under associates would:4.
·
Rescue and transport the casualties if any on the priority basis to first aid centre.
·
Transport all workers in the affected areas to the assembly point on premeditated place.
·
Take roll call of the persons assembled after evacuation.
·
The responsible persons as nominated by the Engineer In charge shall pass on the
information in respect of absenteeism/missing persons to the control room at site.
·
Put all the efforts with the help of fire fighting staff, divers or other present personnel of
security at site.
·
They will maintain daily diary of events and work progress & submit report in this regard to
higher officers as well as to the established control room.
·
They may use the facilities available at each control room as per annexure --IX
Ensure that lists of persons in dam area working under Engineer In Charge, Engineer In Charge SHEP
Mechanical and Electrical Division is readily available with them as detailed at Annexure XIII.
2.1.1 Team at Srinagar Township and adjoining area for rescue and evacuation operation
In addition to above if the danger of the flood looms large on the Area downstream SHEP Dam including
Srinagar Township and adjoining areas, then the under mentioned Govt Deptt team of the officers with
their under associates would act on war footing.
TEAM A
Engineer In charge, Building Construction & Township Division
1. Engineer Estate
2. Engineer Enforcement
3. Engineer Water Supply
TEAM B
Engineer In charge HYDROLOGY
1. Engineer, Regulation
2. Engineer, Hydrology
3. Engineer, Meteorology
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In case of inundation of the whole of the township etc. team A would take care of rescue and
evacuation operations for an area lying on the right side of the road whereas team B would be looking
after the rescue & evacuation operations left of the said road.
They will be responsible for attending the rescue and evacuation operations of the entrapped persons on
priority basis and provide first aid or medical aid immediately through transporting the victims/or
causalities, if any to the nearby medical centre.
The evacuated persons will be transported to the shelters at higher elevation. where the affected persons
may be stationed with temporary housing such as tents, nearby school buildings or religious places such
as Mandir & Dharamshala etc.
They will contact the local NGO’s and Village sarpanches as per the list attached at Annexure - XII for
having immediate help of men and material during the period of such emergency. This may also include
food and clothing etc.
They will also collect the information regarding the loss of human life, live stock and loss to the housing
etc. They will pass this information to the control room established in the colony at safe and easily
accessible pre planned place. The routine roll call of the personnel deployed for such operations shall be
made invariably in assembly point. Absenteeism/missing persons will be reported to the control room
and to the higher authorities also.
They will also keep contact daily with the high offices for fresh instructions as well as seek their guidance
if need be.
They will also make efforts to keep the water supply system running if possible or otherwise make
alternate arrangement for water supply to ease the hardship of the sufferers of the area.
They will maintain daily diary of events and work progress and submit report in this regard to the higher
officers as well as to the established control room.
2.1.2
Team for maintenance of electric supply at SHEP
The team would make efforts to keep the electric supply system in the emergency running at SHEP area.
They will make arrangement to provide temporary lights for such an emergency period wherever
needed. The routine checkup / roll call shall be exercised on particular pre planned assembly point. The
absentees or missing persons would be immediately reported to the nearest control room.
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They will organize all support services like power, temporary lighting and operation of the
water pumps.
They will also keep contact daily with the high officers for fresh instructions as well as seek their guidance
if need be. They will maintain daily diary of events and work progress and submit report in this regard to
higher officers as well as to the established control room.
2.1.3
Security Team for SHEP Dam
This security team would meet the challenge of imminent emergency or inevitable flooding situation
through their efforts and try to secure the emergency operations from all angles. For this it will be more
worthwhile that Project Security. Broadly they will be responsible to:
·
Man all projects entry points
·
Ensure proper access to the emergency services
·
Prioritize the vehicle movement to the emergency site
·
Control the traffic and divert through alternative routes.
·
Ensure no unauthorized person is entry into the emergency site.
·
To permit with minimum delay the entry of authorized personnel and recognized outside
agencies, vehicles etc. involved in the emergency operations that come to help.
·
Any other responsibility as entrusted by the high officers.
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2.2
APPROVAL OF THE PLAN
The plan should be duly approved by all the parties involved or supposed to be involved in its
implementation at the time of any mishap on SHEP Dam assuming thereby that all parties involved are
aware of and fully agree to the roles assigned to them during such emergency. Accordingly, the signatures
of all the related parties have been appended.
3.0
EMERGENCY PROCEDURE
3.1
Emergency identification, Evaluation & Classification
It is mandatory on the part of Engineer In Charge, SHEP dam to determine and identify situations that
require an emergency action. Therefore establishment of procedures for timely recognition are
imperative. To serve as a guide at that time following emergency identification, evaluation & classification
procedure elements are detailed below: Listing of the conditions or events which could lead to or indicate
an existing or potential emergency. Situations involving flood emergencies due to a breach or other
structural failure as well as a major flood without a breach should be included. Unusual situations such as
those caused:(a) By overtopping of a dam due to insufficient spillway capacity during large inflows to the reservoir
(b) By seepage or piping through the dam over long internal conduits
(c) Slope embankment slides
(d) Earthquake damage &
(e) Landslide generated waves within the reservoir.
Hydraulics, hydrodynamics, hydrology, sediment transport Mechanics and geo- technical aspects are all
involved in breach formation and eventual dam failure.
The prominent causes can be listed as follows:
III.
JJJ.
KKK.
LLL.
MMM.
NNN.
OOO.
PPP.
QQQ.
3.1.1
Extreme storm
Landslide
Earthquake
Overtopping
Structural damage
Piping
Equipment malfunction
Foundation failure
Sabotage
Hydrologic: These are related to flooding due to large releases, seepage, slumping, piping,
embankment, deformation, embankment overtopping, movement of concrete section cracking,
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embankment (sliding or over turning) settlement, failure of spillway gates or supporting structures.
spillway & outlet works releases, equipment malfunction, etc.
3.1.2
Earthquake: These are related to impact of earthquake at dam which could lead to
embankment piping, embankment cracking, embankment deformation, liquefaction and movement of
concrete section, etc.
3.1.3
All other events: These are related to hazardous material spills/ releases, equipment failures,
security / criminal actions, fish / wildlife impacts, wildfires, structural fires, landslides, extreme storm,
sabotage, etc. One or more of the above unusual situations will initiate declaration of an emergency for
internal alert or external alert.
A brief description of the means by which potential emergencies will be identified, including the data &
information collection system, monitoring arrangements, surveillance, inspection procedures and other
provisions for early detection of conditions indicating an existing or potential emergency. Emergency
events occur with unusual situations varying degrees of severity and predictability. An emergency may
develop gradually and be steadily monitored providing ample response time. Conversely, an emergency
may develop suddenly requiring immediate emergency response to prevent devastating loss of life or
impacts to structures or the environment. The following definitions are used to classify emergency
events according to an ascending and progressive order of severity to which the dam downstream or
off-site population, structures or environment are threatened. Condition may dictate that situation is
classified as imminent without passing through the less severe situations. A smooth transition should
occur, if the situation is classified as “developing” prior to “imminent”.
Table: Causes of failures
Cause of failure
Foundation problems
Inadequate spillway
Poor construction
Uneven settlement
High pore pressure
Acts of war
Embankment slips
Defective materials
Incorrect operations
Earthquakes
Cause of failure
40 %
23 %
12 %
10 %
5%
3%
2%
2%
2%
1%
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The problem of dam break could be summarized as in Figure.
Dam break
Structure Failure
Dry Bed
Breach
Flank Failure
Levee
Failure
Wet bottom Surface
Submerging
Non Submerging
Small Breach
Medium Breach
Large Breach
Complete Removal
3.2
ASSESMENT of DEGREE of SERIOUSNESS of unusual situation is required. It
may be classified as the BLUE LEVEL, YELLOW LEVEL, ORANGE LEVEL and RED
LEVEL alert according to their seriousness.
Guidelines lie mainly in the interface between the internal and external emergency planning, being the
two main aspects of the following:
3.2.1
Definition of alert levels: If an incident happen with the dam or problem arises related with the
dam over its foundations or with landslides into the reservoir, earthquakes, adverse meteorological
situations or any other alert must be given to civil protection system. The gravity of the problem may
obviously vary with the situation, but in order to assure that all the entities involved in emergency actions
are behaving in accordance with the situation, the alert levels need to be previously defined, and must be
the same for the internal and external emergency plan of each dam.
These alert levels are established in colors, from Blue, the lowest level that corresponds to a routine or
normal situation, to Red, corresponding to a serious or catastrophic situation. The alert levels defined are
presented in Annex-XI. Its underlying philosophy relates the gravity of dam problems with the expected
impacts in the downstream valley and the likelihood of the total dam rupture.
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3.2.2
Alert and Warning systems: When facing problematic situation, the entity exploring the dam must
judge the corresponding alert level and notify the civil protection system, in order to allow the
development of the necessary actions, according to the situation.
If the dam rupture is very likely (orange alert level) or imminent (red level) give” external
alert” signal
and the entity exploring the dam must warn population downstream of the dam. In orange level, the
warning indicates people to be ready for evacuation and in red alert to evacuate quickly.
·
Given that a dam rupture can be very sudden, it is assumed that people leaving up to a certain
distance downstream of the dam have to evacuate by their own means, with no time to wait for
civil protection help.
·
Procedures, aids, instructions and provisions for interpreting information and data to assess the
severity and magnitude of any existing or potential emergency should be clearly defined. The
table covering different emergency situations demanding entirely separate approach to tackle
each case is given as per Annexure-XI.
1.
3.3
NOTIFICATION PROCEDURES
A list of all the persons which includes their name & position, office & home telephones and who are to be
notified in the event of any emergency including alternatives is required to be attached in Emergency
Action Plan. The same has been placed at Annexure- XII. The list indicating who is to make call to whom &
in what priority has been attached as Annexure XIII. Engineer In Charge has been assigned the duty of
spokesperson to disseminate information. The use of media should be pre planned to the extent possible.
Given below is an example of news releases that would be most effective for each possible emergency
situation.
The information which should be conveyed during notification can be given in the following prescript
message (for use by designee when making notification).
i)
This is (name, title, agency)_____________ monitoring, SHEP Dam
ii)
The date is ________and time is________ .
iii)
The conditions at Dam are___________
iv)
We will notify you if the conditions at the Reservoir change. We will give you the next
briefing at
_______ hours or sooner.
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3.3.1
·
v)
For further information contact at SHEP control room telephone No.________ or
_________.
vi)
This message will be sent to you in the text form of fax or other.
EVENT REPORT
The in-charge shall ensure that the following report forms are to be used when recording various
emergency situations and unusual occurrences.
·
The news media including Radio, Television and newspapers should be utilized to the extent
available & appropriate.
·
Emergency Event/unusual occurrence Report for reporting emergency events and unusual
occurrences other than earthquakes, bomb threats and oil and hazardous spills. Form – 1.
·
Earthquake Damage Report – for reporting earthquakes – Form -2.
·
Bomb threat Report – for reporting bomb threats – Form-3. These forms have been attached as
Annexure- VIII.
·
In addition all persons involved including their names title & phone numbers and all agencies
notified should be documented separately during such mishap.
It is desirable for all officers receiving reports in respect of tackling situations and duties assigned to
record / maintain diary and messages be recorded if possible. Photographs are also essential to provide
complete documentation of the event. The attendance at site should be 24 hours a day during
occurrence of such emergencies.
4.0 EMERGENCY SUPPLIES AND RESOURCES
There are certain planning and organizational measures that can help Dam personnel and local officials to
manage emergency situations more safely and effectively. These include:
4.1
MATERIAL AVAILABILITY
Material needed for emergency repair may be stock piled at a nearby convenient safe place from where it
can be used whenever there is emergent need for small quantum emergency jobs. For major emergency
need bulk supply sources be beforehand identified and their timely supply has to be ensured by Engineer
In Charge, SHEP Dam Division. Material such as earth or sand gunny bag be kept ready in near vicinity of
the dam for their immediate use.
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EMERGENCY ACTION PLAN FOR DAM
4.2
MACHINERY EQUIPMENT AVAILABILITY
The different types of machinery required for carrying out different activities during course of
reconstruction has been stationed permanently at to meet with any emergency along with operators.
4.3
LABOUR
The Labour required during the execution of the work will have to be arranged locally. Engineer In
Charge, SHEP Dam will make all such arrangements in shortest possible time.
4.4
ENGINEERS EXPERTS
During any emergency Engineer In Charge SHEP Dam will contact /call or request the engineers/persons
having expertise in the field. These persons may prove helpful for better guidance to tackle/handle the
situation promptly & properly.
4.5
PROVIDING ALTERNATIVE SOURCES OF POWER
In the event of power failure during the crucial hours of emergency at site when different activities are
running simultaneously, it is very much imperative to have an alternative source of power to meet with
such situation so that execution may be carried out smoothly without any hindrance. For restoring power
supply to the radial gates (in the event of failure of existing arrangement of power supply, the controls be
immediately connected to the feeder from the D.G. Bank.
5.0 EMERGENCY MANAGEMENT PLAN FOR SHEP DAM IN CASE OF CLOUD
BURST AND FLOODS
5.1
RESERVOIR OPERATION LEVELS
The project is planned as a run of the river type scheme. The upper level of the reservoir is governed by
the expected tail waters of the proposed Utyasu dam on the upstream side and accordingly FRL has been
fixed as 605.5m. The minimum draw down level (MDDL) has been kept as el.603m and this level provides
live poundage of about 8.0 million cubic meters. (Ref. Area capacity curve of the reservoir at AnnexureXV). The live poundage of 8 Mcum would be sufficient for peaking operation of the station for about four
hours daily. Inflow in excess of the reservoir storage capacity and hydraulic capacity of the generating
plant and environmental release requirements is discharged through the spillway bays and under sluice
openings. Eight numbers of spillway gates and four number of under sluice openings will manage the
excess inflow. The outflow discharge arrangements and corresponding reservoir levels are discussed
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EMERGENCY ACTION PLAN FOR DAM
below:
·
The water conductor system for power generation has been designed to pass a discharge up to
616 cumec and is connected to the reservoir through an intake structure about 100m upstream of
the dam axis. The reservoir shall be operated between FRL and MDDL during the lean period for
optimal use of the reservoir for power generation at the project, environmental releases and
power generation downstream. During this period, the Power Station can be operated as RoR at
FRL or for peaking between FRL and MDDL on a daily basis. After peaking operation between FRL
and MDDL, the reservoir level shall be restored to FRL at the end of the day.
·
Design flood for design of the spillway discharge capacity has been computed as 19200 cumec
and corresponds to the SPF. The Probable Maximum Flood (PMF) has been computed as 26400
cumec. The spillway consists of 8 bays each of 14.5m width and can pass the SPF at FRL and PMF
at MWL. This has been confirmed in the hydraulic model studies conducted at IRI Roorkee.
·
Four numbers of Under sluices have been constructed in two dam blocks at elevation el.558m
and has a maximum discharge capacity of 875 cumec at FRL.
·
Water release at the rate of 5 cumec has also been envisaged for meeting the environmental
requirements.
·
During the lean period of the year, the reservoir shall be operated between FRL & MDDL, for
power generation.
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EMERGENCY ACTION PLAN FOR DAM
5.2
SPILLWAY GATE OPERATION SCHEDULE
The objective of the gate operation schedule is to ensure safety of the dam structure including the gate
parts, hoists, energy dissipation arrangement and spillway tail channel while letting out the excess
discharge.
Shrinagar Hydroelectric Project is located on the river Alaknanda, is envisaged as a run-of-the-river
scheme with a comparatively small storage capacity. The reservoir is formed by the construction of a 90m
high diversion dam with spillway crest level at 584.5m. The reservoir will be operated between full
reservoir level (FRL) of 605.5m and Minimum Draw down Level (MDDL) of 603m. This provides a live
storage of 8Mcum between FRL and MDDL. For PMF condition, the reservoir level will rise to Maximum
Water Level (MWL) of 609.8m with all the outlet gates fully open. The reservoir is operated between FRL
and MDDL and ensures optimal use of the reservoir for power generation at the project. In a dependable
year, between 1 July and 10 September, the reservoir will be operated at or above FRL, depending on the
magnitude of the inflow. Inflow in excess of the reservoir storage capacity and hydraulic capacity of the
generating plant will be discharged through the spillway bays and under sluice openings.
Eight numbers of spillway bays and four number of under sluice openings will manage the excess inflow.
In order to meet the power generation requirements, the annual drawdown of the reservoir begins by 21
September, when the inflows into the reservoir decline as a result of receding monsoon. From 21
September till May, the volume of water flowing down the penstock to the powerhouse typically exceeds
the inflows into the reservoir and therefore during this period, water will be drawn from the live storage
for operation of the power station for peaking purpose. The small live storage available in the reservoir
can be used to meet the peaking requirements of the power station and the reservoir can be restored to
FRL using the inflow during this period. Thus, during this period, the reservoir will be operated between
FRL and MDDL for operation of the power station.
From 1st June, inflow will meet the power station operation on full load. The project authorities have
installed reservoir water level measuring instruments which data will be used to forecast the
instantaneous inflows into the reservoir for the purpose of maximising power generation and ensuring
timely refill of the reservoir. The instantaneous water level data is transmitted into a computer in the
control room and converted into inflow data with the help of reservoir capacity data and instantaneous
outflow data. The reservoir is drawn down during the period 21 September to 31 May on a daily basis for
peaking power generation and filled back at the end of the day. During this
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EMERGENCY ACTION PLAN FOR DAM
Period the inflow is less than the power generation requirement and thus, the reservoir is operated
between FRL and MDDL.
5.3
Flood discharge and water level control
To start with the gate opening sequence for the automatic control system is proposed to be as follows:
Sequence of operation of the 8 gates is given below (gate numbering progresses from the left i.e.1 denotes
the left end gate and 8 denotes the rightmost end gate).
Two middle gates (nos.4&5) shall be opened symmetrically first, to prevent cross flows striking the river
banks. At any time during the operation of the, the difference in gate opening of any two consecutive
operation shall not exceed 0.5m. After opening the two central gates, the next two gates, (3&6) adjacent to
the central gates on both sides, shall be opened in symmetrical manner. The other gates (2&7) and (1&8)
then shall be opened symmetrically.
While closing the gates, the gates that were opened last shall be closed first. The procedure to be
followed for closing the gates shall be generally reverse of the procedure followed for opening the gates.
Complete closure of the gates shall be accomplished by gradual lowering of the gates by 0.2 to 0.3m in the
proper sequence.
Detailed spillway gate operation schedule for range of inflows has been computed and shown in detail in
tabular form in Annexure I. The table shows inflow rate and sequence of operation of the HRT intake
gates, under-sluice gates and the spillway gates. The control values in terms of inflow, reservoir level and
the range of operation of the spillway gates is extracted as shown in Table-I below
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SPILLWAY GATE OPERATION SCHEDULE
Annexure- I
Sl.
No
1
2
3
4
Time of
Year
(
Reservoir
Level (m)
Power
house
operation
mode
Inflow
(cumec)
Power
Intake
drawal
(cumec)
Undersluice discharge
(cumec)
21 Sep to
31 May
21 Sep to
FRL
RoR
<616
<616
31 May
>MDDL
≤FRL
Peaking
<616
1 June to
20 Sep
1 June to
FRL
RoR
FRL
RoR
1 June to
FRL
NO
7
8
1 June to
20 Sep
1 June to
20 Sep
1 June to
FRL
NO
FRL
NO
FRL
NO
Gate
3
Gate
4
Gate
5
Gate
6
Gate
7
Gate
8
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
<616
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
560-716
560-716
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
>716-
716
≤875
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
875-854
0.0
0.0
0.0
0-
0-
0.0
0.0
0.0
18.38
18.38
018.38
18.38
18.38
18.38
0.0
0.0
18.38
18.38
018.38
18.38
0.0
18.38
18.38
18.38
18.38
018.38
18.38
>1590 –
>6325≤11705
>11705≤17116
>17116-
0.0
854-761
0.0
0.0
0.0
761-701
0.0
0.0
701-664
018.38
18.38
≤20942
20 Sep
9
Gate
2
≤6325
20 Sep
6
Gate
1
≤1590
20 Sep
5
Spillway Gate Opening (m)
1 June to
>FRL-
20 Sep
≤MWL
NO
>20942≤26400
018.38
0.0
664-671
018.38
Full
Full
Full
Full
Full
Full
Full
Full
open
open
open
open
open
open
open
open
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6.0
DAM INSTRUMENTATION AND OTHER OBSERVATIONS
The instrumentation for the dam includes the following:
·
Electrical instrumentation for pore pressure gauges, borehole extensometers, stress meters, strain
meters, no stress-strain meter, temperature monitoring devices and joint meters;
·
Surface settlement points;
·
Borehole standpipe piezometers;
·
Seepage measuring weirs;
·
Uplift measuring devices;
·
Plumb line;
·
Water level measuring gauges;
·
Automatic weather station; and
·
Strong motion equipment.
Data from the instruments shall be monitored regularly in general and during monsoon in particular
when fresh flood water starts arriving in the reservoir. If any abnormal deviation with reference to the
previous measurements is noticed, its cause shall be analyzed and measures for safety of the dam shall
be taken. All observations shall be recorded properly and their test checks shall be done appropriately.
·
Observe the behavior of spillway and energy dissipation arrangement during release of flood
waters. Spillway profile may need modification if negative pressures are recorded on its surface.
·
Observe behavior of flood waters on the downstream site of the dam in respect of erosion of river
banks. If erosion at certain points is observed, river training works shall be reviewed.
·
Ensure efficient working of the pumping system in the drainage gallery of the dam. Alternative
source power supply for uninterrupted pumping shall be arranged.
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ALERT LEVEL FOR EMERGENCY CONDITIONS (SHEP DAM)
Annexure-XI
Type
Alert
of Alert Level
Internal
Alert
BLUE
SITUATION
Engineer in Charge Action
No immediate detection of anomalies in the Measures to solve problem.
dam.
or other events that do not compromise
Give internal alert signal of
the structural dam safety and do not make
blue level.
unviable the dam observation system.
Make notification in chart
Situation is stable or developing very
No.1
slowly.
Inform to
No consequences are expected in the valley
O & M Head
downstream of the dam Upstream water
Engineer In Charge SHEP
Dam
level is below FRL of 605.50m and above
MDDL 603.00m and discharge is 616 – 716
cumecs.
Response
system
Direct
Command
System
Small earthquake observed by SMA-800
and
seepage
discharge
increased
marginally.
Leakage observed from spillway radial
gates Locations than permissible limit.
Internal
YELLOW
Alert
Existence of anomalies or events that might
compromise up to some degree & assuming
that
eventual
small
consequences
downstream can happen.
Measures to solve problem
Reservoir Level approaching FRL of 605.5m,
Flood discharge in the range of 1590 –
11705 cumecs are coming and
Make notification in chart
No.1
Existence of adverse meteorological
condition Stress meters in dam giving
compressive stress higher than permissible
limit
Give internal alert signal of
yellow level
Inform to
O & M Head
Engineer In Charge
SHEP Dam
Member/Irrigation/CWC
Earthquake of mag ±0.01g observed
when reservoir is FRL 605.50 and seepage
discharge increased in dam galleries
Leakage observed through power house
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23
Direct
Command
System
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machines
Leakage from strut gallery Plug/hoist
chamber plug/diversion tunnel plug or in
galleries of dam
Excessive leakage from spillway radial gates
Fresh cracks observed in some galleries
within dam body
External
Alert
ORANGE
Situation with high probability of dam
failure. It may not be possible to control the
situation and might cause serious
consequences downstream of the dam.
Measures to solve problem
Reservoir Level approaching FRL of 605.5m,
Flood discharge in the range of 1170520942 cumecs are coming and heavy floods
is likely to impinge as per IMD fore casting.
Make notification in chart
No.2
One of the spillway gate is inoperative.
Earthquake observed of mag. 0.07g when
RWL above 605.50 resulting into increased
seepage from galleries within dam body.
Heavy land slide near dam abutment
upstream
Indirect
Command
System
Give external alert signal of
Orange level
Implement
incident
command system
Inform to
O & M Head
Engineer In Charge SHEP
Dam
Member Irrigation
CWC, DM, SDM
Heavy leakage observed in strut gallery
plug/hoist chamber plug/D/Tunnel plug or
in other galleries due to unknown reasons
Wide crack observed in foundation gallery
with heavy leakage.
Uplift pressure pipes showing pressure
more than the permissible limit at some
locations and plumb line deflection
exceeded
the
permissible
limit
Sabotage/Bomb threat and situation
developing serious.
External
RED
Alert
Situation of inevitable catastrophe
Warning-Population
Reservoir Level above FRL 605.5m and less
than MWL 609.8m still rising after opening
of the entire radial & under sluice gates.
Discharge between 20942 – 26400 cumecs.
Downstream dam ready
Evacuate- Local police.
to
Indirect
Give external alert signal of Command
Red level.
System
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Severe Damages to the spillway apron
portion due to continuous running of
spillway gate over a long period of time.
Make notification in chart
No.2
One of the spillway radial gates washed
away when RWL above FRL.
Implement incident command
system
One of the spillway gate is inoperative
when Heavy
uncontrollable
flood
expected.
Inform to
O & M Head
Engineer In Charge SHEP
Earthquake observed of mag. ±0.1g & plumb
line reading has suddenly increased &
crossed the permissible limit and stress
meter showing value more than permissible
limit. .
Dam
Member Irrigation
CWC, DM, SDM
Uplift pressure pipes in Block showing
pressure more than the permissible limits.
Heavy leakage observed through power
house machines which is increasing rapidly
Heavy land slide occurred near dam
abutment upstream when RWL 605.50 and
above causing heavy wave action &
turbulence and level approaching 609.8
(MWL)
Heavy leakage observed through Power a
house machine which is increasing rapidly.
Emergency arising due to accidental fire in
cable galleries.
Heavy leakage observed in strut gallery
Plug/ Hoist chamber plug/Diversion tunnel
plug or from galleries & is increasing
rapidly.
Potential emergency situation developed
due to sabotage/bomb threat and flooding
in Dam galleries imminent
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Action to be taken in case of Power House Shutdown due to increase in silt values
above permissible level i.e. the silt value in river is above 5000 PPM at DAM CCR
SILT CONTENT
The SHEP, due to its location, is subjected to serve environmental conditions, worsened by the presence of
silt in the water. During flood season the quantity of sand in the water might be equal to or greater than
5.0 g/l.
Particle size of silt allowed through turbine shall be as follows:
a)
Particle size of below 0.075 mm
b)
Particle size in range of 0.075 mm to 0.15 mm
c)
Particle size in the range of 0.15 mm to 0.20 mm
d)
Particle size in range of 0.2 mm to 0.25 mm
:
:
:
:
65%
25%
5%
5%
The monthly average sediment concentration ranges from 1 g/l to 5.2 g/l during the mansoon. The mean
value is 1.9 g/l, the maximum daily sediment concentration observed in this period 16.3 g/l (1988)
The monthly average sediment concentration is about 0.1 g/l during the non-mansoon period.
Annexure-II
Sr. No. Description
1
2
3
Action to be Taken
For silt value
between 2000 -3000 The silt sample will be taken every two hours
PPM at DAM CCR
For silt value
The silt sample will be taken every hour.
between 3000 -5000
PPM at DAM CCR
The silt value in
river is above 5000
The information regarding increase in silt shall be closely monitored
and in case it exceeds 5000 PPM. The information shall be
immediately passed to Power House and Engineer in charge for
preparation of shutdown of Power House.
Radial Gate No. 4 and 5 shall preferably be opened first to flush out
the silt and Intake gates shall be closed in phased manner as per
procedure given in Annex-I
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Annexure-III
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Annexure-III
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Annexure-IV
DAM IMAGES
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Annexure-V
Checklist for Power House Shutdown
Date-
Time -
Before and during reservoir depletion in case of power house shutdown:
Sr.
No.
Description
Remarks
1
Downstream Projects have been informed
YES
NO
2
Inlet Gate is closed
YES
NO
3
Required No. of manpower are available.
YES
NO
4
Required No. of Vehicles are available
YES
NO
5
DG set is in Order
YES
NO
6
Communication facilities are in order
YES
NO
7
Power Arrangment
YES
NO
8
Alarm is Given by operating the Hooter
YES
NO
8
Before closing Intake gates it is Ensured that respective SFT gate is
Closed.
YES
NO
9
Before Closure of last Intake Gate the Level of 603.0 or below is
achieved and at least half an hour has elapsed after complete
shutdown
of power house machines.
YES
NO
(Shift In charge)
Dam control room
SHEP
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Annexure-VI
CENTRAL WATER COMMISSIONING
Flood Control Room- Rudrapryag Uttrakhand
Sl.No.
Name
Contact No.
1
Mr. PK Gupta
09412948811
2
Mr. Dinesh Thakur
09761854684
3
Mr. Yogeshwer Prasad
09410531292
4
Mr. Dhani Singh
09568088342
5
Mr. Laxmi Chand
09760375764
6
Mr. Suresh Verma
09455934128
Remark
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EMERGENCY ACTION PLAN FOR DAM
Annexure-VII
Repair and maintenance schedule for upkeep of different
components of SHEP Dam
As an input adjunct to the avoidance of an emergency, some of the suggestive steps would suffice. The
time schedule should be adhered to as stipulated in operation & maintenance manual.
Daily:
·
General inspection of civil works
·
General cleaning of the dam and galleries
Fortnightly: ·
Emergency doors in spillway galleries sanitary fittings
·
Cleaning of Sumps & drains, Joint drains & intermediate drains
·
Cleaning of piezometric tubes Maintenance of air flow meters and air vents
·
Replacement of sealing compound of contraction joints
·
Repair of approaches to drain holes & ground water holes
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Annexure-VIII
FORM- 2
Earthquake Damage Report: For Reporting Earthquakes
The------------------------
dam (latitude ------------------------longitude------------------------
Lies within seismic zone----------------------------where major damage can be expected from earthquake.
The dam has the possibility of being subject to moderate to severe ground shaking from nearby or
distant moderate to large magnitude earthquakes.
Earthquake
Damage Report
Date-----------------------
Time-----------------------------
Person Reporting Information
------------------------------------------------------------------------------
Feature Affected
------------------------------------------------------------------------------
Description of Earthquake Effects
On structural conditions
Type of damage (slides subsidence etc ------------------------------------------------------------------------------Location
-------------------------------------------------------------------------------
Severity
-------------------------------------------------------------------------------
Movement (direction magnitude)
-------------------------------------------------------------------------------
Deflection or Settlement Readings
------------------------------------------------------------------------------
Effect on adjoining structure
-------------------------------------------------------------------------------
Type of effect (leakage or stoppage
-------------------------------------------------------------------------------
Location
-------------------------------------------------------------------------------
Size of affected structure
-------------------------------------------------------------------------------
Estimated flow or change in flow
-------------------------------------------------------------------------------
Nature of discharge (including sediment) -----------------------------------------------------------------------------Wave action damage
-------------------------------------------------------------------------------
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Annexure-VIII
(Form-3)
Location
-----------------------------------------------------------------
Size of affected area
------- ---------------------------------------------------------
Estimated flow or change in flow
-----------------------------------------------------------------
Nature of discharge (including sediment)
-----------------------------------------------------------------
Wave action damage
-----------------------------------------------------------------
Other
-----------------------------------------------------------------
Action
Change in operation
-------- ---------------------------------------------------------
Emergency repairs
------------- -----------------------------------------------------
Surveillance
-- -----------------------------------------------------------------
Regional assistance needed (examination)
--------------------------------------------------------------------
Public information provided
-------------------- -------------------------------------------------
To facilitate analysis of conditions a map should be prepared showing the location and extent of a
damaged areas such as subsidence areas seeped areas springs and other pertinent data including
the dates of readings and site conditions at the time of observation. This map should be revised
periodically to show changing condition until they are stabilized.
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Annexure-VIII
(Form-1)
Emergency event /unusual Occurrence Report
For use when reporting emergencies or unusual occurrences other than earthquake, oil and
hazardous substance spills and bomb threats. For any of the three aforementioned emergencies
use the appropriate report form because this is a general form, there will be sections that do not
pertain to the emergency .Only fill out those sections that are applicable to the emergency.
Date-------------------Time---------------Location
------------------------------------------------------------------------------------Brief description of events (include caller’s name and phone number
____________________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
____________________________________________________________________________________
Pertinent Data
Size of affected area
--------------------------------------------------------------------------
Extent of damages
--------------------------------------------------------------------------
Effect of operations
--------------------------------------------------------------------------
Possible cause
-------------------------------------------------------------------------
Rate of discharge
------------------------------------------------------------------------
Appearance of discharge
-------------------------------------------------------------------------
Fore bay elevation
------------------------------------------------------------------------
Appearance of fore bay
-------------------------------------------------------------------------
Fore bay rise rate---------------------------Weather condition
Tail bay rise rate
---------------------------
----------------------------------------------------------------------------
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Annexure-IX
FACILITIES TO MADE AVAILABLE IN EACH CONTROL ROOM
1.
Emergency rescue lights (5 Nos.)
2.
Diving masks (2 Nos.)
3.
Safety nets (5 m x 5 m = 5 Nos.)
4.
Safety rope (1000 m long 25 mm dia)
5.
Rope Ladders (10 m long 5 Nos.)
6.
Full body harness (safety belts 10 Nos.)
7.
Ascending & Descending device (5 Nos.)
8.
Safety Helmets with head lamps (10 nos.)
9.
Ear muffs/dust respirators/gumboots/safety shoes for 10 persons
10.
Electric Hand gloves/chemical hand gloves.(5 pair each).
11.
Fire extinguishers (5 Nos.)
12.
Mobile D.G.Set
13.
Stretchers (5 Nos.) First aid kits (10 Nos.)
14.
Artificial Resuscitators (5 Nos.)
15.
Hand Light torches (5 Nos.)
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Annexure-X
Sample Warning Messages for different situations
1.
2.
Blue situation of Emergency (Internal Alert)
i)
Land slide
ii)
Small leakage observed from the seal of the radial Gate No.---- Rt/Left side
Yellow Situation of Emergency (Internal Alert)
i)
Leakage observed in gallery, Power Channel.
ii)
Stress meters in Block showing increased stresses Plumb line in
showing higher deflection
3.
4.
Orange Situation of Emergency (External Alert)
i)
Widening of crack in foundation gallery Heavy leakage observed
ii)
Heavy land slide occurred in u/s
Red Situation of emergency (External Alert)
i)
High inflow of ± 24000 cumecs are coming (More floods expected as per IMD)
over toping imminent
ii)
Spillway radial gate got stuck and inoperative and RWL rising
(330 MW) SRINAGAR HYDRO ELECTRIC PROJECT
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(330MW) ALAKHNANDA HYDRO POWER CO. LTD
EMERGENCY ACTION PLAN FOR DAM
Annexure-XI
External Alert RED
Narrative information of persons to be notified by each individual as per NFC
1.
After knowing about the occurrence of disaster Engineer Instrument will make calls to
Shift Engineer and Shift Engineer will make single call to Shift In charge. Shift In charge
will make call to:1st call to Shift In-charge, Power house
2nd call to Operation In-charge Dam
3rd call to Maintenance In-charge Dam
4thcall to Engineer Dam Safety
5th call to Security In-charge Dam
6th call to all village Pardhan d/s SHEP Dam & NGO’s of the area as per Annexure-VIII
7th call to member discharge measure
8th call to Engineer CWC Srinagar
9th call to Fire Officer
10th call to safety Officer
11th call to Engineer Electrical
12th Local Police Station
13th call to road and Colony In-charge
2.
Operation In-charge will make calls if he gets the information about disaster first
1st call to Dy. General Manager (O & M, Dam)
2nd call to General Manager (Civil, Dam)
3.
Dy. General Manager (O & M, Dam) will make calls as below
1st call to Director, O & M Head
2nd call to General Manager, O & M Plant
3rd call to Project Co-coordinator
4th call to Member, Media
6th call to Member, CWC Department
7Th call to DM, SDM District
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(330MW) ALAKHNANDA HYDRO POWER CO. LTD
EMERGENCY ACTION PLAN FOR DAM
Annexure-XI
External Alert Orange
Narrative information of persons to be notified by each individual as per NFC
1
After knowing about the occurrence of disaster Engineer Instrument will make calls to
Shift Engineer and Shift Engineer will make single call to Shift In charge. Shift In charge
will make call to:1st call to Shift In-charge, Power house
2nd call to Operation In-charge Dam
3rd call to Maintenance In-charge Dam
4thcall to Engineer Dam Safety
5th call to Security In-charge Dam
6th call to village Pardhan d/s SHEP Dam & NGO’s of the area as per Annexure-VIII
7th call to member discharge measure
8th call to Engineer CWC Srinagar
9th call to Fire Officer
10th call to safety Officer
11th call to Engineer Electrical
12th Local Police Station
13th call to road and Colony In-charge
2
Operation In-charge will make calls if he gets the information about disaster first
1st call to Dy. General Manager (O & M, Dam)
2nd call to General Manager (Civil, Dam)
3
Dy. General Manager (O & M, Dam) will make calls as below
1st call to Director, O & M Head
2nd call to General Manager, O & M Plant
3rd call to Project Co-coordinator
4th call to Member, Media
6th call to Member, CWC Department
7Th call to DM, SDM District
(330 MW) SRINAGAR HYDRO ELECTRIC PROJECT
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(330MW) ALAKHNANDA HYDRO POWER CO. LTD
EMERGENCY ACTION PLAN FOR DAM
Annexure-XI
External Alert Yellow
Narrative information of persons to be notified by each individual as per NFC
1
After knowing about the occurrence of disaster Engineer Instrument will make calls to
Shift Engineer and Shift Engineer will make single call to Shift In charge. Shift In charge
will make call to:1st call to Shift In-charge, Power house
2nd call to Operation In-charge Dam
3rd call to Maintenance In-charge Dam
4thcall to Engineer Dam Safety
5th call to Security In-charge Dam
6th call to member discharge measure
7th call to safety Officer
8th call to Engineer Electrical
2
Operation In-charge will make calls if he gets the information about disaster first
1st call to Dy. General Manager (O & M, Dam)
2nd call to General Manager (Civil, Dam)
3
Dy. General Manager (O & M, Dam) will make calls as below
1st call to Director, O & M Head
2nd call to General Manager, O & M Plant
3rd call to Project Co-coordinator
(330 MW) SRINAGAR HYDRO ELECTRIC PROJECT
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(330MW) ALAKHNANDA HYDRO POWER CO. LTD
EMERGENCY ACTION PLAN FOR DAM
Annexure-XI
External Alert Blue
Narrative information of persons to be notified by each individual as per NFC
1
After knowing about the occurrence of disaster Engineer Instrument will make calls to
Shift Engineer and Shift Engineer will make single call to Shift In charge. Shift In charge
will make call to:1st call to Shift In-charge, Power house
2nd call to Operation In-charge Dam
3rd call to Maintenance In-charge Dam
4thcall to Engineer Dam Safety
5th call to Security In-charge Dam
6th call to member discharge measure
7th call to safety Officer
8th call to Engineer Electrical
2
Operation In-charge will make calls if he gets the information about disaster first
1st call to Dy. General Manager (O & M, Dam)
2nd call to General Manager (Civil, Dam)
3
Dy. General Manager (O & M, Dam) will make calls as below
1st call to Director, O & M Head
2nd call to General Manager, O & M Plant
3rd call to Project Co-coordinator
(330 MW) SRINAGAR HYDRO ELECTRIC PROJECT
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(330MW) ALAKHNANDA HYDRO POWER CO. LTD
EMERGENCY ACTION PLAN FOR DAM
Annexure-XII
MOBILE NUMBERS
(DM, SDM, Local Police, CWC & Irrigation Departments)
Sl. No.
Contact Person
Contact Number
Remark
1
S.D.M. (Kirtinagar)
+91-94123-68661
+91-70550-22345
2
S.D.M. ( Srinagar)
+91-97598-38837
+91-86509-22209
3
Mr. Rati Kalam (C.W.C)
Dehradoon
+91-98971-44807
4
Mr. Prashant Prabhat (C.W.C)
Dehradoon
+91-99972-90188
5
Mr. Sant Kumar(C.W.C) Dehradoon
+91-94531-33773
6
Tehsildaar (Srinagar)
+91-96341-28888
7
Irrigation Dept.
+91-94121-76307
8
S.H.O Kirtinagar
+91-94111-12847
9
Tehsildaar Vedpal
+91-94121-53402
10
Tarun Gupta (SITE INCARGE – University
Bridge)
+91-89797-56373
11
Srikot Pradhan
+91-9997511292
12
Srikot Police Chowki
+91-80063-53090
13
Mahilla Thana (Kedar Mohalla-Srinagar)
+91-94111-12854
14
Srinagar Chowki (Inspector)
+91-94111-12847
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(330MW) ALAKHNANDA HYDRO POWER CO. LTD
EMERGENCY ACTION PLAN FOR DAM
Annexure-XIII
SHEP- INTERTELECOM LIST
Office
Name
Designation
DAM Control Room
Residence
PH
Koteshwar
-
-
7005
7925
Shart Chandra Sharma
Head- O & M
7914
7900 /
7800
7901
D.Niranjan Reddy
Director-Project
-
7008
-
Santosh Reddy
Project Coordinator
-
7007
7923
Sanjeev Kumar Jha
General Manager (O & M)
7920
7004
7924
Ramesh Kumar Gupta
General Manager (T & C)
7024
7928
Manish Jain
Dy. General Manager (DAM)
7033
7929
C V Ramana
Dy. General Manager (CIVIL, DAM)
Arun Kumar Singh
Asst. General Manager (HR)
-
7041
7930
P Suresh Reddy
Dy. General Manager (Administration)
-
7017
7939
Krishna Venkat Bhat
Asst. General Manager (Plant & Machinery)
-
-
7934
Aditya Kumar Verma
Asst. General Manager (E&M, Plant)
7922
-
7931
Ramesh Chandra Maithani
Asst. General Manager (SCADA)
7944
7029
7927
Manish Bahuguna
Asst. General Manager (Security)
-
7006
7941
Conference Hall
Power House
7902
7002
-
HVAC Room
Power House
7802
-
-
Sadanand Saw
Manager- Electrical
7830
-
7935
Vishram Singh
Manager- Electrical
7830
-
-
Yatish Joshi
Manager- Electrical
7831
-
7940
Firoz Khan
Manager- Maintenance
7832
-
-
Mukesh Bhatt
Manager-IT
7832
7014
-
Abhishek Purwar
Manager- HR
7836
-
-
Power House (Control Room)
-
7932
(330 MW) SRINAGAR HYDRO ELECTRIC PROJECT
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(330MW) ALAKHNANDA HYDRO POWER CO. LTD
EMERGENCY ACTION PLAN FOR DAM
Annexure-XIII
SHEP- INTERTELECOM LIST
Forebay (*)
Control Room
7904
-
-
7905
7906
-
7937
-
7907
-
-
7908
-
-
7909
-
-
7910
-
-
7912
-
-
-
7044
-
7914
-
-
7915
-
-
CMD Guest House
7916
-
-
GOC
7917
-
-
SUMP
7918
-
-
Office - Kalaram Raghuvanshi
Bypass Channel
Sr. Engineer (Mechanical)
Bypass Channel
Switchyard (*)
Control Room
Office - Shailendra Jaiswal
Manager- Electrical
Relay Panel Room
DSB (*)
Control Room
Office - Tripurari Pathak
Manager- Civil
DAM (*)
Control Room
Office - Shaik Shahid
Manager- Mechanical
Security (*)
Power House
(Main Gate)
7903
-
-
Switchyard
(Main Gate)
7911
-
-
Dam
(Main Gate)
7919
-
-
7943
-
-
-
7025
-
Thapli Colony (Main Gate)
Koteshwar
(Security Control Room)
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(330MW) ALAKHNANDA HYDRO POWER CO. LTD
EMERGENCY ACTION PLAN FOR DAM
Annexure-XIII
SHEP- MOBILE LIST
Sl.No. Name
Designation
Mobile Number
1
DAM Control Room
9759700738,
9759700764
2
Power House (Control Room)
9759700793
3
Shart Chandra Sharma
Head- O & M
9759700488
4
D.Niranjan Reddy
Director- Technical
9949522775
5
Santosh Reddy
Project Coordinator
9536099999
6
Sanjeev Kumar Jha
General Manager- Plant
9759700595
7
Remanna Maru Reddy
General Manager- Civil
9759700405
8
Ramesh Kumar Gupta
Dy.General Manager- PH
9759700876
9
Manish Jain
Dy. General Manager- Dam
9759700369
10
Arun Kumar Singh
Dy. General Manager- HR
9759700141
11
C V Ramana
Dy. General Manager- Civil
9759700162
12
P Suresh Reddy
Dy. General Manager- Admin
9759700795
13
Krishna Venkat Bhat
Ass. General Manager- T & P
9759700167
14
Aditya Kumar Verma
Ass. General Manager- PH
9759700819
15
Manish Bahuguna
Ass. General Manager- Security
9759700410
16
Ramesh Chandra Maithani
Ass. General Manager- SCADA
9759700352
17
Y R Sharma
Ass. General Manager- R&R
9759700349
18
Santosh Sharma
Sr. Manager- Civil
9759700761
19
Shaik Shahid
Sr. Manager- Dam, Mechanical
9759700596
20
Tripurari Pathak
Manager- Civil
9759700773
21
Sadanand Saw
Manager- PH, Electrical
9759700175
22
Yatish Joshi
Dy. Manager- Electrical
9759700169
23
BS Rawat
dy. Manager- Mechanical
9759700784
24
B.V Thapa
Security Incharge, Dam
9759700760
25
Firoz Khan
Dy. Manager- Mechanical
9759700155
26
Ajeet Singh
Dy. Manager- Mechanical
9759700367
27
Shelender
Dy. Manager- Electrical
9759700774
28
Vishamber Bag
Dy. Manager- Electrical
9759700592
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EMERGENCY ACTION PLAN FOR DAM
29
Ajay Kumar
Dy. Manager- Dam, Mechanical
9759772227
30
Sachin Jain
Assistant Manager- Dam, Mechanical
9759700736
31
Aashish Bhardwaj
Assistant Manager- SCADA
9759700768
32
Rohit Pethaniya
Engineer- Dam
9759700566
33
Perminder Singh
Engineer- Dam
9759700179
34
Aanchal Goutam
Engineer- Dam
9759700350
35
Iqbal Anwer
Engineer- PH
9759700583
36
TS Rawat
Sr. Engineer- Dam
9759700362
37
Kala Ram Raghuvanshi
Safety Officer
9759700184
38
Rajesh Thakur
Engineer- PH
9759700127
39
Chander Mohan
Engineer- PH
9759700758
40
Vishram Singh
Foreman- PH
9759700591
41
Mukesh Bhatt
Manager- IT
9759700166
42
Abhishek Purwar
Manager- HR
9759700130
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EMERGENCY ACTION PLAN FOR DAM
Annexure-XIV
SALIENT FEATURES
1
LOCATION
State
District
Tehsil
Nearest rail head
2.
HYDROLOGY
Catchment area
Snow bound catchment area
Maximum Probable Flood (PMF)
Standard Project Flood (SPF)
3
11110 Sq km
2640 Sq km
26400 Cumecs
19200 Cumecs
DIVERSION DAM
Type
Length
Maximum height of dam from deepest
foundation
Height of dam from deepest river bed
Number and size of spillway bays
Crest elevation
Full Reservoir Level {FRL)
Maximum Water Level(MWL)
Minimum Draw Down Level (MDDL)
Gross storage
Live storage
Dead storage
Energy dissipation device
Road level on top of clam
4
Uttaranchal
Tehri&Pauri
Kirtinagar&Pauri
Rishikesh
Concrete Gravity
248 m
90m.
66m
8 bays of 14.0m width each
584.50 m
605.50 m
609.80 m
603.00 m
78 m cum
8 m cum
70 m cum
Solid bucket
611.0 m.
INTAKE
Invert level of trash rack
Length of trash racks structure
No. of Intake tunnels
Centre to centre distance
Diameter
Shape
Invert level
Design discharge (Rated Capacity)
593.0 m.
105.80 m.
5
21.4rn
6.50m
circular
596.09 m
660 cumecs
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EMERGENCY ACTION PLAN FOR DAM
6
HEAD RACE TUNNEL
Nos
Length
Diameter
Shape
7
TROUGH
Length
Size
Shape
Shape in cross section
8
600.30 m
BY PASS CHANNEL
Type of fall Structure at head
Fall
Crest level
No. and size of bays at head
Total width
Design discharge
12
Trapezoidal Lined Section
3.05km
560 Cumecs
Concrete lined
RCC lining overbed and sides
FOREBAY
Full Reservoir Level (FRL)
11
240m
158.5 m
13.0m
0.20 mm and above
100 cumecs
POWER CHANNEL
Type
Length(including transition)
Design discharge (Rated Capacity)
Lining
Type of Lining
10
185m
13 m x 5.65m
Twin barrel
Rectangular
DESILTING BASIN
Length
Width (including divide Wall)
Water depth
Particle size to be removed
Flushing discharge
9
1
889m
13m
Circular
Ogee type
11.8m
596.80 m
3Nos. of 15m each with 2
piers of 1.5m each
48m.
616 cumecs.
PENSTOCKS
Numbers
Diameter
Length
4
5.6m
114m
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(330MW) ALAKHNANDA HYDRO POWER CO. LTD
EMERGENCY ACTION PLAN FOR DAM
13
POWER HOUSE
Location
Type of turbines
Gross head
Right bank of River
Alaknanda
Surface
124.7mx25m
330 MW
4 units of 82.5 MW
Vertical Francis
67.20m
Net head
Service bay elevation
Minimum Tail Water Level
Normal Tail Water Level
Size of Service Bay
65.97 m
548.06 m
531.20 m
533.10 m
27mx23.6m
Type
Size of Machine hall
Installed capacity
14
TAIL RACE CHANNEL
Type
Length
Bed width
Full supply depth
Side slope
Bed slope
Type of lining
Value of Rugosity coefficient
Trapezoidal lined section
140 m.
85m.
3.10 m.
2:1
1 in 2430
Dry boulders lining /
PCC lining
0.03
(330 MW) SRINAGAR HYDRO ELECTRIC PROJECT
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(330MW) ALAKHNANDA HYDRO POWER CO. LTD
EMERGENCY ACTION PLAN FOR DAM
Annexure-XV
Annexure-XVI
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(330MW) ALAKHNANDA HYDRO POWER CO. LTD
EMERGENCY ACTION PLAN FOR DAM
Information Flow Chart – SHEP Dam Control Room
(330 MW) SRINAGAR HYDRO ELECTRIC PROJECT
51
(330MW) ALAKHNANDA HYDRO POWER CO. LTD
EMERGENCY ACTION PLAN FOR DAM
Annexure-XVII
(330 MW) SRINAGAR HYDRO ELECTRIC PROJECT
52

Emergency Action Plan for DAM (DRAFT) - (330MW) SHEP