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

Greek Riddles:
Gordon Campbell On The Recent Smackdown Over Greece

There had been a fortnight of fevered buildup. Yet here we are in the aftermath of the February 28 showdown between the new Syriza government in Greece and the European Union “troika” and… no-one seems entirely sure what happened. Did the asteroid miss Earth?

It seems to have. The EU still exists. Syriza is now claiming a victory of sorts. It doesn’t help that the only people who do appear to be sure (the Greeks buckled) are claiming the exact opposite to what the other group (the Greeks won!) are saying. Plus, there are bets either way e.g. Bloomberg News: “Its too early to say who caved in to whom.” More>>

 

PARLIAMENT TODAY:

Iraq: Ex-Hostage Says Government Not Putting NZers, Iraqis First

Harmeet Singh Sooden is travelling to Iraq in the coming weeks to work with Christian Peacemaker Teams (CPT) on a short-term assignment. More>>

ALSO:

Joint Statement: Australia-New Zealand Leaders’ Meeting

Prime Minister Key warmly welcomed Prime Minister Abbott and Mrs Abbott to New Zealand. The visit has enabled wide-ranging and substantive discussion that has underlined the strength, value, diversity and warmth of our trans-Tasman relationship. More>>

ALSO:

Press Conference: Peters To Stand In Northland By-Election

New Zealand First Leader Winston Peters has announced his intention to stand in the Northland by-election, citing his own links to the electorate and ongoing neglect of the region by central government. More>>

ALSO:

Gordon Campbell: On The Wage Hike For MPs (and Paul Robeson)

Hard to tell what is more infuriating. Is it the 5.3% increase on the already bloated salaries of MPs, or their pantomime of outrage at being gifted with such a wonderful back-dated bonanza? More>>

ALSO:

No Designers Or Visual Artists: Flag Panel Members Announced

The Government has appointed 12 New Zealanders as members of the Flag Consideration Panel which will engage with the public about a possible new New Zealand flag, Deputy Prime Minister Bill English says. More>>

ALSO:

Labour MP Stands Down From Portfolio: Comment From Carmel Sepuloni

The first I knew of my mother’s charges was when I was called by a reporter yesterday. I spoke to Andrew and we agreed there is a conflict of interest at the present time which means I will temporarily stand aside from the Social Development portfolio. It’s the right thing to do… . More>>

ALSO:

Gordon Campbell: On Whether NZ Troops Are The Least Of Islamic State’s Problems

Given that it has been politically packaged and sold as a training mission, the Iraq deployment announced yesterday by Prime Minister John Key seemed to be mysteriously short of actual trainers... The other wing of the argument is whether a troop deployment is (a) the only effective way and (b) the appropriate time to combat Islamic State. More>>

ALSO:

Get More From Scoop

 

LATEST HEADLINES

 
 
 
 
 
 
 
 
Regional
Search Scoop  
 
 
Powered by Vodafone
NZ independent news