Local Govt | National News Video | Parliament Headlines | Politics Headlines | Search

 


Ngawha incident – UPDATE 2

Media Release

Kerikeri, Thursday 27 February 2014 – UPDATE #2 at 1145

Ngawha incident – UPDATE 2 (updates details about pentane release and causes)


Click for big version.

CAPTION: Top Energy CEO Russell Shaw with an activated burst disc, part of the pressure release safety system triggered at Ngawha this morning.

A pressure relief valve at Top Energy’s geothermal electricity generation plant at Ngawha was triggered at around 5.30am today. A pressure safety valve opened as designed, releasing pressure from the system resulting in a loud bang.

The single staff member on overnight duty activated the emergency procedure to automatically shut down the plant and summoned the Fire Service before vacating the site safely. The site contains a total of 30,000 litres of pentane gas.

The Fire Service entered the site and after extensive testing declared it safe at 7.17am.

The site continues to generate 15MW of power.

An investigation into the cause of the pressure build-up is underway. This is being conducted by Top Energy experts.

The pressure build-up occurred in a vaporiser unit which transfers heat from geothermal liquid into the pentane which, in turn, drives the turbines.

A first-stage pressure dump valve which is supposed to release pressure as it builds did not operate as it should have. A secondary safety release valve did operate as designed, creating several loud bangs.

The investigation has so far shown that a relatively small amount of pentane gas was released into the atmosphere.

Top Energy will post any updates on its website, as these become available.

“We are concerned that this incident occurred but delighted that our emergency procedures appear to have worked as they should have,” said chief executive Russell Shaw. “We’re particularly proud of our duty staff member and the local fire service who ensured that this was a textbook response to the incident.”

ENDS

© Scoop Media

 
 
 
 
 
Parliament Headlines | Politics Headlines | Regional Headlines

Gordon Campbell:
On The Inquiry Into One Case Of Dirty Politics

Suddenly, we’re awash in inquiries and reviews. (It feels almost as if the Greens won the last election.) Caught out by the damning inquiry by SIS Inspector-General Cheryl Gwyn, the government’s response yesterday was utterly in character – it released two other major reports at the same time to try and distract public attention...

Inquiries are supposed to re-assure the public. What these inquiry outcomes share in common is a government culture of zero responsibility. More>>

IGIS ON SIS:

 
 

Parliament Today:

Temporary Release Crackdown Continues: Corrections Review Of Phillip Smith Case

“The review by Corrections’ Chief Custodial Officer reveals that the plan for Smith’s series of temporary releases was overly ambitious and misinformed. He’s a highly manipulative and deceptive person who although technically eligible, should not have been considered for temporary release." More>>

ALSO:

White Ribbon Day: Govt Resumes Sexual Violence Trial Proceedings Work

Justice Minister Amy Adams has asked the Law Commission to resume work on proposals for better supporting victims of sexual violence through the criminal process. The Law Commission will revisit its previous work on alternative pre-trial and trial processes to identify options for improving complainants’ experience in court. More>>

ALSO:

"New Faces, Wise Heads": Andrew Little Announces New Labour Line Up

Labour Leader Andrew Little today announced a bold new caucus line up which brings forward new talent and draws on the party’s depth of experience. More>>

ALSO:

Gordon Campbell: On Rick Ellis As Te Papa’s New CEO

The recent appointment of former TVNZ boss Rick Ellis to head Te Papa has copped a fair bit of criticism. Much of it has been inspired by the suspicion that Ellis has been hired to pursue the same purely commercial goals as he did at TVNZ, while similarly neglecting the serious cultural side of his mandate. More>>

Passport Cancellation, Surveillance: Draft 'Foreign Fighters Legislation' Released

The final draft of the Countering Terrorist Fighters Legislation Bill contains proposals previously announced by Mr Key in a major national security speech earlier this month. More>>

ALSO:

Related

Joint Statement: Establishment Of NZ-China Strategic Partnership

At the invitation of Governor-General Lt Gen The Rt Hon Sir Jerry Mateparae and Prime Minister The Rt Hon John Key of New Zealand, President Xi Jinping of the People’s Republic of China made a state visit to New Zealand from 19 to 21 November 2014... More>>

ALSO:

Savings Targets: Health Procurement Plan Changes Direction

Next steps in implementing DHB shared services programme Health Minister Jonathan Coleman says the Government has agreed to explore a proposal put forward by DHBs to move implementation of the shared services programme to a DHB-owned vehicle. More>>

ALSO:

More on Health Policy:

Get More From Scoop

 

LATEST HEADLINES

 
 
 
 
 
 
 
 
Regional
Search Scoop  
 
 
Powered by Vodafone
NZ independent news