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Exercise Prelude Paul Youngman
Exercise Prelude
Paul Youngman
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Exercise Prelude
Exercise Prelude took place on the 5th and 6th of November with the final report
being published by the HSE on their website last month.
Overview of results
What was within scope for Prelude
Observations
Key indicators
Key responses
Areas for further work
Transporter focussed actions
Shipper focussed actions
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Exercise Prelude
Scope of Exercise Prelude
Prelude was focused on Network Emergency Management Team actions and downstream load reduction
Testing of Primary and Secondary Transporters and new control rooms
Prelude was run to a script that went through each stage of a Gas Deficit Emergency
No development of strategy or time available for consideration of the “what if’s”
Upstream involvement and actions were limited to communication tests / exchange of forms
Wider interactions with DECC and external communications were also out of scope
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Exercise Prelude – General Observations
New processes introduced for Moffat Interconnector worked well
Communications from NEMT to the Distribution Network Control rooms was
effective
Communications and processes need aligning to reflect changing industry
structure
All transporters reported that the quality of site contact details was poor
Improvement in the number of sites that when contacted would load shed
Improvement by sites in understanding what is required of them
Improvements by Transporters in call handling and the escalation of issues
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Firm load shedding - Overall
Percentage of Site SOQ Load Shed by LDZ
0%
20%
40%
60%
80%
100%
LDZ
Per
cen
tag
e
Opus
Prelude
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Firm load shedding - Overall
Percentage of Site SOQ Load Shed by LDZ
0%
20%
40%
60%
80%
100%
LDZ
Perce
ntage
Opus
Prelude
Improvement compared to exercise
Opus in the percentage of SOQ Load
Shed
Performance of the top 4 LDZ was 75% of the total SOQ contacted being load shed
Action on all transporters to adopt the best practice of the best performing networks
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Firm load shedding – contact details
Firm Load Shedding Exercise Results
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Moscow Neptune Opus Prelude
Exercise
Pe
rce
nta
ge
Successful (could turn off) Could not turn off Total sites where contact was made Contact details incorrect
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Firm load shedding – contact details
Contact details incorrect
Consistently high 32.89 %. Every third phone call made was to an incorrect number.
Improvement in action taken
where contact is made
Decrease in “could not turn off” and increase in “Successful - can turn off”
Firm Load Shedding Exercise Results
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Moscow Neptune Opus Prelude
Exercise
Perc
enta
ge
Successful (could turn off) Could not turn off Total sites where contact was made Contact details incorrect
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Exercise Prelude - Observations
Shippers were frustrated by fax communications
Duplicate faxes being sent by transporter control rooms during the exercise
SC2004 fault resulted in restoration notices being repeatedly sent after the end of the exercise
Some shippers unaware of new control room structure / effect on emergency
communications and processes
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Exercise Prelude - Actions
Working with Transporters to improve:
Communication with Shippers and Supplementary Transporters detailing the changes to distribution network control rooms
Maintaining a commitment to “Best Practice” and adoption of it.
Establishing a better understanding of isolation and the restoration process
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Exercise Prelude - Actions
Working with Shippers to improve:
Provision of emergency contact details
Methods of communication and information provision
Awareness of any process changes
Understanding of the types and scopes of a Network Gas Supply Emergency
Clear understanding of the commercial processes
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Summary of Section Q Emergency Contact requirements.
Large Firm
Interruptible >25000 therms
>50000 therms
Site Manned 24 Hours
24 hour Emergency Contact and Job Title 1-5 1-5 1-4
Emergency Contact Telephone Number 1-5 1-5 1-4
Fax 1 1
Site Not Manned 24 Hours
24 hour Emergency Contact and Job Title 3-5 3-5 3-4
Emergency Contact Telephone Number 3-5 3-5 3-4
Fax 1 1
In addition to User contact details the User is responsible for providing the following site emergency contacts. (TPD Q 2.3 and 2.4)
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Contact Details
Responsibility of Users to update Emergency Contacts in line with the UNC
and their contract with consumers
Key Features:
Fax and 24 hour where applicable
Relevant individual at site Has authority to act in accordance with instructions from Transporter
Alternate contacts where appropriate
Integration with site and organisational plans
Obligation for all to co-operate under GSMR to protect public safety
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Report and contact details
The full results of Exercise Prelude are now available from the HSE
website
http://www.hse.gov.uk/gas/supply/information.htm
For further information please contact the emergency planning team
Paul Youngman – Emergency Planning Manager (GNCC) Tel: 01926 654151
