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 Gaza And Burning The Israeli Flag

One of the selling points in New Zealand’s campaign for a temporary seat on the Security Council is that we have a pluckily independent voice to offer on international conflicts.

This image is not entirely self-delusional. When we did occupy a temporary UN Security Council seat in the 1990s, New Zealand was forthright about the need for the international community to actively respond to the Rwanda genocide. On April 14, 1994, New Zealand, Nigeria and the Czech Republic were the only nations to call for a forceful UN intervention to halt the killings. It was a proud moment in the diplomatic record of the Bolger government.

What then, is the current National government doing with respect to the slaughter in Gaza? More>>

 

Parliament Today:

TAIC Report: Urgent Recommendations After Melling Rail Accident

The Transport Accident Investigation Commission has made four urgent recommendations to KiwiRail following the accident two months ago (27 May) when a Matangi passenger train collided with a stop block at Melling Station, Lower Hutt. More>>

ALSO:

Red Tape: Local Regulations Go Under Microscope

The Government says it is accepting nearly all of the recommendations the Productivity Commission has made on ways to improve local regulations. More>>

ALSO:

Spending Questions: Claudette Hauiti To Step Aside At Election

National Party President Peter Goodfellow confirms that he has received notification from List MP Claudette Hauiti that she plans to step aside at the 20 September election. More>>

ALSO:

EPA: Board Of Inquiry Rejects Basin Flyover By Majority Of 3 To 1

The independent Board of Inquiry delegated to decide on the Basin Bridge Proposal has, by a majority decision (3 to 1), cancelled the Transport Agency’s Notice of Requirement and declined its resource consent applications for the construction, operation and maintenance of a flyover on State Highway 1 in Wellington City... More>>

ALSO:

Gordon Campbell: On The Non-Apology To Tania Billingsley

The refusal by Prime Minister John Key to issue a personal apology to Tania Billingsley has been accompanied by an array of excuses... Yesterday though, Key’s choice of words indicated that an apology was the last thing on his mind. More>>

ALSO:

Conventions: Winston Peters On The Nation

Winston Peters opens door to standing in East Coast Bays electorate, says it's an "exciting point" and he's thinking about it. "I’ve had a whole lot of people writing to me and calling up and saying ‘why don’t you have a go in East Coast Bays’." More>>

ALSO:

Get More From Scoop

 

LATEST HEADLINES

 
 
 
 
 
 
Regional
Search Scoop  
 
 
Powered by Vodafone
NZ independent news