titre de la présentation - advancing sustainable hydropower · safety culture among the teams,...

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Session:

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Hydro Operational

Safety

EDF’s experience

Jean-François Astolfi

Senior Executive Vice President

Hydropower World Congress 2015

Hydropower International Association

2 - La sûreté hydraulique

Hydro Operational Safety: EDF’s definition

« Hydro Operational Safety encompasses all the provisions

implemented in the design, construction, operation and

maintenance of an HPP, so as to prevent any accident due to the

management of water which could affect employees, public

environment and goods or limit its consequences »

Hydro operational safety is a top priority which should focus on three main risks:

Risk of failure of a

component or piece

of work

Risks due to the

operation of an HPP

during flood periods

Risks linked to

normal operation

of the plant

Hydro safety requires on a strong commitment at all managerial levels .It relies on a high

level of professionalism and on the permanent implementation of sound principles of

safety culture among the teams, based in particular on regular training and on the sharing

of feedback experience of all events affecting safety (either incidents or forewarning

events ).


Regulations

(laws, decrees,

instructions..)

Hydro Safety Policy

Guidelines

and

requirements

Safety

CultureRoad Maps

The basis of Hydro Operational Safety

+

+

Management’scommitment

OrganizationSafety steeringcommittes and

Safety Inspector

Skills and training


Risk of failure of a component or part of works

The risk

The risk of failure is not limited to the dams

The failure of a gallery, a chanel, a penstock or a

gate could also have significant impact on

people and goods. Safety can also be affected

by accidents on turbines and generators or

dysfunction of the I&C/SCADA system

Risk management based on:

Safe design, construction and impounding of the works

Comprehensive knowledge of pieces of equipment or works which bear on the safety(OMISH approach)

Maintenance, monitoring and inspection of the said key components and risk mapping (EDF carried out a comprehensive review based on hundreds of expertises over the past decadeto support the SuPerHydro program)


Management of the risk of failure by EDF

Reduce the risks Risk management

Expertise and Diagnosis

Risk mapping

DMPSuPerHydro

and other works

Refining the maintenance plansOMISH approach

« family approach »

Knowledge


Risks linked to the operation of the plants during

flood periods The risk:

Worsening the natural consequences of a flood byincreasing the waterlines upstram or downstream

The hydropower plants shall be designed andoperated in such a way as to insure the floodtransit without any risk for the works andequipment nor worsening of natural consequenceson the riparian populations

Risk management by EDF

Engineering teams in charge of flood forcast

Regular training of operating teams onsimulators (implementation of a floodmanagement permit)

Set of specific procedures for flood periods

Back up teams quickly mobilized

Assistance to local operators by remote controlcenters

Regular checking/update of spillway and otherorgans design

No significant incident during flood periods overthe past 30 years


Risks stemming from normal operation of the plant

The risk:

During their normal operation hydropower

plants can generate risks for the people and

goods, resulting from flow variation in the

watercourses or variation of the reservoir

levels.

The risk management relies on:

The comprehensive knowledge of the effects of the operation on the

environment of the plant so that appropriate actions could be taken in real

times according to the events and the sites .A methodology should be settled

to reduce the number of hazardous sites, which implies close cooperation

between engineering and operationg teams ans all other river stakeholders

The detailed kowledge acquired by the operators regarding the functioning of

the works and pieces of equipment which enables the implementation of

preventative maintenance.

A strong public information policy and a permanent vigilance: incidents can

happen, water stakeholders can change or modify their habits, hazards can be

displaced from a site to another.


200,000 leaflets given by

150 « hydroguides » every summer

500 conferences in local schools…

1M€/y specific budget

Public information: Awareness campaign

9 - La sûreté hydraulique9 - La sûreté hydraulique

ESSH : Significant event for hydro Safety ( EDF ’s

internal safety indicator since 1996 )

Applies to any untoward

event which could endanger

people,lead to

mismanagement of water

levels or flowrates and

generally any « non safe »

situation

Listing and quotation

according to 2 parameters :

consequences and level of

seriousness

Safety indicator implemented

by EDF’s own initiative since

1996

The ESSH approach

contributes to the

identification of forewarning

events and dysfunctions and

the implementation of

improvements






people,lead to




situation




seriousness



1996

The ESSH approach

contributes to the




improvements

titre de la présentation - advancing sustainable hydropower · safety culture among the teams,...

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