Just saw this information on Wikipedia. It may help if it becomes a Crown Entity so they take your concerns more seriously:
"In June 2018, Internal Affairs Minister Tracey Martin and the Associate Minister for Arts, Culture and Heritage Grant Robertson announced a National Archival and Library Institutions Ministerial Group. As part of its remit, the group will "investigate options for ensuring Ngā Taonga Sound & Vision has appropriate governance, and a sustainable structure and funding (this will include a consideration of whether Ngā Taonga Sound & Vision should be established as a Crown entity)"

https://en.wikipedia.org/wiki/Ng%C4%81_T...

Dear Joss J,

Thank you for your annotation. Some very useful information. Correspondingly I have sent the following text to the working group ministers.

Dear Honourable Sirs and Madams,

I was recently informed of the formation of a National Archival and Library Institutions Ministerial Working Group. I would like to make a detailed submission in regard to the remit to “investigate options for ensuring Ngā Taonga Sound & Vision has appropriate governance, and a sustainable structure and funding (this will include a consideration of whether Ngā Taonga Sound & Vision should be established as a Crown entity)”. Please advise if and how I may do this?

My background. I am retired from a technical career in Radio, Television and Telecommunications. At various times I had contracts with Nga Taonga Sound and Vision (then the New Zealand Film Archive) mainly to attempt recovery of heritage material from obsolete analogue video formats.

More recently I have been trying to inform Ministers of a situation putting almost the entire collection of pre 1950 Nitrate Films at risk of destruction. This is due to the collection being stored within the intense electromagnetic field of the high power AM radio transmission site at Titahi Bay. The location is subjecting the collection to the risk of inadvertent ignition from radio frequency sparking.

NTSV appear to have completely disregarded recommendations in the two relevant international safety standards;

Standard for the Storage and Handling of Cellulose Nitrate Film NFPA-40

PD CLC/TR 50427:2004 Assessment of inadvertent ignition of flammable atmospheres by radio-frequency radiation — Guide.

For example NFPA-40 states a Nitrate Film fire is almost impossible to extinguish. Burning Nitrate Film will continue to burn even underwater and the only suitable fire protection method is by storing film cans stacked no more than two high (recently tightened down from six high) in isolated “pigeon holes” constructed of no-conductive material and the installation of an automated water deluge sprinkler system (to quickly lower temperature). Apparently NTSV have stacked film cans eight high on metal shelving and the fire control method is by provision of a bucket of water at the entrance to the dangerous goods storage vault.

In Homebush, Sydney, Australia a builder received radio frequency burns when working on the construction of a new apartment building 200 meters from an AM transmission mast energized by two 5 Kilowatt transmitters. The owners of the mast were ordered to immediately stop transmission while an investigation was carried out. Eventually the Australian Government admitted the apartment building was far too close to the mast and construction should never have been permitted.

In New Zealand, after the earthquakes in Christchurch, there was a proposal to rezone the land around the Gebbies Pass AM transmission site for new housing. Radio New Zealand submitted that there would be problems from Radio Frequency radiation if new buildings were erected closer than 1 kilometer from the mast.

Later this year Radio New Zealand intend to erect a replacement mast at the Titahi Bay site about 130 meters from the Nitrate Film dangerous goods vault. It is to be energized by 50 Kilowatt transmitters. In addition it is well known that tall masts attract lightning. The transmitters and transmitter building is designed to withstand damage from such a strike. The Nitrate Film storage vault has not been included in the lightning protection design and electrical systems inside such as alarms and air conditioning equipment is likely to sustain damage. Obviously the above two factors greatly increase the risk of an accident. Unfortunately WorkSafe NZ are refusing to investigate as they have been assured by NTSV all risks are being correctly managed.

About 15 years ago the New Zealand Film Archive borrowed from me a fairly valuable working heritage Video Character Generator. Management thought it was junk and disposed of it.

Carelessness by NZ Film Archive staff and management has resulted in irreparable damage to very rare Video Recorders. Six of the large and heavy machines were originally purchased to record and edit the Commonwealth games in 1974. The Film Archive inherited a pair when they were retired from service at the Avalon Television centre. One of them they dropped off the back of a truck and completely destroyed it. Later the second one failed after it got (accidentally?) covered in sawdust. The Film Archive then decided it was uneconomical to strip it down for repair. At the time it was the only surviving working machine of the particular type (Ampex AVR1) and absolutely the best machine for the recovery of pre 1980 Broadcast Television tapes.

I can supply the working group with a lot more detail about the incidents described above. It is my opinion that NTSV management is not fit to be the custodians of our Film and Video heritage.

P Ford

A new 137m high transmission mast 130m from the dangerous goods storage vault was installed in late February 2020. RNZ's intent is to eventually only use the new mast for all services and remove the existing 137m mast located 530m from the vault. The new mast, being shorter than the original 220m mast, increases the radio frequency magnetic field at ground level and hence the level of radio frequency radiation the vault receives. Work Safe have been informed of the increased risk of ignition.