Com receio de apagão, órgão exigia que termoelétrica ficasse em operação, mas estatal ignorou pedido, alegando que ela precisava de manutenção; diante da crise hídrica, ONS tem exigido que térmicas funcionem na capacidade máxima
André Borges, O Estado de S.Paulo
BRASÍLIA – O Operador Nacional do Sistema (ONS) pressionou a Petrobras a manter ligada uma termelétrica que precisava de manutenção. Alegando risco de “falha catastrófica” na estrutura da unidade, porém, a Petrobras desligou a usina, conforme mostram comunicados que foram trocados entre a estatal, a Agência Nacional de Energia Elétrica (Aneel) e o ONS obtidos pelo Estadão.
Diariamente, é o ONS que determina o que será gerado em cada uma das usinas em operação no País, como forma de distribuir essa geração entre as diferentes fontes e garantir o equilíbrio dessa divisão. Com o nível dos reservatórios das hidrelétricas muito baixo por causa da pior estiagem dos últimos 91 anos, o órgão tem exigido que usinas de geração térmica – a gás, diesel, biomassa e carvão – funcionem na capacidade máxima para tentar reter mais água nas barragens. Essas determinações, no entanto, têm testado os limites do sistema.
No primeiro fim de semana de setembro, entre os dias 3 e 5, a Petrobras havia comunicado ao Operador que precisaria paralisar as operações de sua usina térmica de Três Lagoas, uma planta de 386 megawatts de potência instalada em Mato Grosso do Sul, porque tinha de fazer uma manutenção importante na estrutura. PUBLICIDADE
A empresa teve o cuidado de agendar o serviço para o fim de semana, quando o consumo elétrico no País diminui, e apresentou a programação com duas semanas de antecedência. Como é praxe no setor, se tratava de uma parada programada, ou seja, uma operação de rotina. Ocorre que o ONS decidiu rejeitar o pedido.
Três dias antes da paralisação agendada, no dia 31 de agosto, o Operador rejeitou o pedido da Petrobras e, sem dar espaço para justificativas, declarou que “em função do cenário energético, com cargas elevadas e alto despacho térmico”, tinha que manter a “máxima disponibilidade de unidades geradoras” e que a paralisação deveria ocorrer apenas no feriado, entre 5 e 7 de setembro.
No dia seguinte, a Petrobras ainda insistiu com o órgão regulador e pediu para que fosse mantida a programação original da intervenção, porque “já não havia tempo hábil para reprogramar a atividade e que essa postergação de data ia contra as recomendações dos especialistas e do fabricante”.
O ONS, porém, voltou a rejeitar as alegações da companhia e, por meio de um e-mail, manteve a ordem de adiar a parada, indicando mais uma vez o cenário de crise energética para adiar a intervenção na usina. Restou à Petrobras ignorar o pedido.
“Diante das recomendações do fabricante (dos equipamentos da usina) e da equipe de engenharia e, ainda, frente ao risco de falha catastrófica desta turbina, a Petrobras necessitou prosseguir com a parada emergencial”, informou a Petrobras, em comunicado ao qual a reportagem teve acesso.https://arte.estadao.com.br/uva/?id=2DYAAz
A parada ocorreu e a empresa fez a manutenção. Em laudo enviado para a Aneel e ONS sobre o assunto, a estatal fez questão de destacar que, ainda em fevereiro, em manutenção de rotina, já havia encontrado danos em partes da estrutura da usina. Os reparos foram feitos em manutenções programadas.
“A Petrobras tenta, sempre que possível, coordenar as intervenções de maneira programada, inclusive enviando notas técnicas explicando a criticidade dos serviços a serem executados, quando necessário, mas existem situações emergenciais com risco para o equipamento ou instalações”, declarou a empresa ao ONS e à Aneel. Nesses casos, afirmou a companhia, é necessário parar de maneira emergencial, inclusive, para evitar situações de desligamento forçado, o que pode causar problemas mais graves a toda programação de geração do setor.
Estresse da estrutura
No início deste mês, a Petrobras se reuniu com representantes do setor elétrico, que cobraram detalhes sobre cada uma das plantas térmicas da companhia e o adiamento de suas manutenções. Há casos de usinas que tinham paradas programadas de até 27 dias, por exemplo, e que a companhia se comprometeu em realizar o trabalho em apenas três dias, de forma a manter a geração plena no maior tempo possível.
O coordenador do Grupo de Estudos do Setor Elétrico (Gesel) da Universidade Federal do Rio de Janeiro (UFRJ), Nivalde de Castro, alerta sobre os riscos desse estresse na estrutura, uma vez que muitas térmicas não foram concebidas para operarem o tempo todo.
“É uma situação delicada e de risco. O governo está forçando as estruturas, adiando datas ou encurtando paradas, justamente por causa da crise hídrica. Essa situação com a Petrobras é um reflexo dessa crise. A ordem é empurrar com a barriga até onde for possível para preservar água nos reservatórios”, diz Castro.
O risco de apagão fez com a Aneel criasse a bandeira de crise hídrica na conta de luz, que acumula aumentos desde o começo do ano. A energia produzida pela termoelétrica é mais cara do que a gerada pelas usinas hidrelétricas.
Era ‘urgente’ a necessidade de parar
Logo após a Petrobras rejeitar a determinação do ONS e seguir com o plano de paralisar a usina térmica de Três Lagoas, em Mato Grosso do Sul, a Aneel questionou oficialmente a petroleira sobre as causas de ter ignorado a decisão do órgão responsável por gerenciar diariamente o abastecimento do País.
Em resposta encaminhada no dia 10 de setembro, a companhia respondeu à agência que, “mais do que seguir as regras e os procedimentos do Operador”, sempre se posiciona de forma proativa e em parceria com as equipes do órgão, “em postura colaborativa e transparente para evitar desalinhamentos” com o Operador. “Infelizmente, na presente situação, houve necessidade técnica e urgente de parar a unidade”, afirmou a Petrobras.
Procurada pela reportagem, a Petrobras afirmou que “solicitações de adiamento, postergação ou aprovação de paradas fazem parte da rotina operacional de relacionamento com o Operador Nacional do Sistema Elétrico”. A empresa só não destacou, porém, que a atitude de deixar de seguir essas determinações está longe de qualquer rotina.
A reportagem questionou ainda se a estatal prevê mudanças de data ou reduções de prazo de manutenções já programadas no parque de ao menos dez usinas térmicas sob seu controle. “Todas as térmicas da Petrobras estarão efetivamente em operação até o fim de setembro. Sobre os cronogramas de paradas, a Petrobras seguirá atendendo, sempre que possível, às necessidades do sistema, garantindo a segurança operacional de suas unidades”, declarou.
O ONS informou, por meio de nota, que, “como uma das ações para o enfrentamento da escassez hídrica solicitou, em julho deste ano, a todas as usinas geradoras que adiassem suas manutenções a fim de aumentar a disponibilidade de geração”. Segundo o órgão, “cabe ao agente avaliar a viabilidade técnica e operacional de acatar a solicitação ou não”. O ONS, porém, não comentou o fato de ter rejeitado o pleito feito pela Petrobras, mesmo após a empresa ter argumentado sobre os riscos do adiamento.
You’re so cool! I don’t believe I’ve read through a single thing
like that before. So nice to discover someone with a few unique thoughts on this topic.
Seriously.. thank you for starting this up. This site is something that’s needed on the internet,
someone with some originality!
Feel free to surf to my site; sciatic nerve relief
I have been reading out many of your stories and i can state
pretty clever stuff. I will definitely bookmark your
site.
Feel free to visit my website; Shaun
Good way of explaining, and pleasant article to
take information on the topic of my presentation focus,
which i am going to present in institution of higher education.
Check out my web site: growing weed indoorshave
Very fantastic visual appeal on this site, I’d rate it
10.
Here is my blog; Anglea
Yes! Finally someone writes about 7 keto weight loss.
Also visit my web site: diet plans tend
Your style is so unique in comparison to other folks I have read stuff
from. Thanks for posting when you’ve got the opportunity, Guess I will just book
mark this page.
my webpage; http://www.fotosombra.com.br
Right now it looks like BlogEngine is the preferred blogging platform out there right now.
(from what I’ve read) Is that what you are using on your blog?
my website: oil swishing
Hello, all is going nicely here and ofcourse every one is
sharing facts, that’s truly good, keep up writing.
Write more, thats all I have to say. Literally, it seems as
though you relied on the video to make your point.
You obviously know what youre talking about, why throw away your intelligence on just posting videos to your weblog when you could be giving us something
enlightening to read?
Also visit my web blog :: fad diets
I like this web blog very much, Its a rattling nice billet
to read and obtain info.
My homepage :: travel knowledge
This website definitely has all the information I
wanted about this subject and didn?t know who to ask.
My homepage :: incredible sex
Real clear internet site, thanks for this post.
Here is my homepage; weed indoorshave
That is a very good tip particularly to those fresh to the
blogosphere. Brief but very precise info…
Appreciate your sharing this one. A must read post!
My web blog watching asmr
Hi, all is going sound here and ofcourse every one is sharing information, that’s really excellent,
keep up writing.
An outstanding share! I’ve just forwarded this onto a co-worker who has been doing
a little research on this. And he actually bought me breakfast simply because I found it for him…
lol. So allow me to reword this…. Thanks for the meal!!
But yeah, thanx for spending the time to talk
about this matter here on your web site.
my site; treatment process
After I initially left a comment I seem to have clicked the -Notify me when new comments are added- checkbox and now each time a comment is added I receive four emails with the exact same comment.
Is there a means you are able to remove me from that service?
Kudos!
Thank you for sharing with us, I believe this website genuinely stands out
:D.
Feel free to surf to my blog – acne treatment reviews
Today, while I was at work, my cousin stole my
iphone and tested to see if it can survive a forty foot drop,
just so she can be a youtube sensation. My iPad is now broken and she has 83
views. I know this is entirely off topic but I had to share it with someone!
Also visit my homepage – skin care
Hello colleagues, how is the whole thing, and what you wish for to say regarding this piece of writing,
in my view its really awesome designed for me.
We’re a group of volunteers and opening a new scheme in our community.
Your website provided us with valuable information to work on. You’ve done a formidable job
and our entire community will be thankful to you.
Have you ever considered writing an e-book or guest authoring on other sites?
I have a blog based upon on the same ideas you discuss and would really like to have you
share some stories/information. I know my readers would value your work.
If you are even remotely interested, feel free to shoot me
an e mail.
Also visit my web blog; gigantic penis size
Nice post. I learn something new and challenging on blogs I stumbleupon on a
daily basis. It’s always exciting to read content from other authors and use a little something from other websites.
Hi! I’ve been following your website for some time now and
finally got the courage to go ahead and give you a shout out from Lubbock Texas!
Just wanted to tell you keep up the excellent job!
Here is my blog – weight loss vs fat loss
I got what you mean,saved to bookmarks, very decent website.
Feel free to visit my webpage :: Wilford
Hi! Quick question that’s entirely off topic.
Do you know how to make your site mobile friendly? My web site looks weird when browsing from my
apple iphone. I’m trying to find a theme or plugin that might
be able to fix this issue. If you have any recommendations,
please share. Appreciate it!
Also visit my web page bbs.yunweishidai.com
No matter if some one searches for his required thing, thus he/she wants to
be available that in detail, thus that thing is maintained over
here.
My web-site – losing weight
You need to take part in a contest for one of the finest blogs on the net.
I most certainly will highly recommend this site!
This internet site is my aspiration, really fantastic style and design and Perfect subject
matter.
Feel free to visit my web blog – Dick
I truly enjoy examining on this internet site,
it holds wonderful content.
My website – http://www.fotosombra.com.br
It is the best time to make some plans for the longer term and it is time
to be happy. I have learn this submit and if I could I desire to counsel you some interesting things or advice.
Perhaps you could write next articles referring to this
article. I desire to read more issues about it!
My web blog … perfect skin care
Hi there to every one, since I am really keen of reading this webpage’s
post to be updated regularly. It includes pleasant information.
Incredible story there. What occurred after?
Good luck!
my blog skin care routines
I’m truly enjoying the design and layout of your blog.
It’s a very easy on the eyes which makes it much more enjoyable for me to come here and visit more often. Did you hire out a
designer to create your theme? Fantastic work!
Here is my webpage; skin care routines
Fascinating blog! Is your theme custom made or did
you download it from somewhere? A theme like yours with a few simple tweeks would really make my blog shine.
Please let me know where you got your design. Bless you
my page – teens smoking
Whoa! This blog looks exactly like my old one! It’s on a entirely
different topic but it has pretty much the same layout and design. Outstanding choice of colors!
Hey I know this is off topic but I was wondering if
you knew of any widgets I could add to my blog that automatically tweet my newest twitter
updates. I’ve been looking natural skin care tips for dry skin a plug-in like this for quite
some time and was hoping maybe you would have
some experience with something like this. Please let me know if you
run into anything. I truly enjoy reading your blog and I look forward
to your new updates.
Hey I know this is off topic but I was wondering if you
knew of any widgets I could add to my blog that automatically tweet my newest twitter updates.
I’ve been looking for a plug-in like this for quite some time and was hoping maybe you would have some experience with
something like this. Please let me know if you run into anything.
I truly enjoy reading your blog and I look forward to your new updates.
Look at my blog post … acne skin
We are a group of volunteers and starting a new scheme in our
community. Your site offered us with valuable info to work on. You’ve done a formidable job and our whole community will be thankful to you.
My web site: flat belly diets
It’s an remarkable post in favor of all the online users; they will take
advantage from it I am sure.
F*ckin’ tremendous issues here. I’m very satisfied to peer your article.
Thanks so much and i am having a look forward to contact you.
Will you kindly drop me a e-mail?
Here is my blog – back pain problems
You’ve made some good points there. I checked on the net to learn more about the issue and found most individuals will go along with your views on this website.
Also visit my blog post – bbs.yunweishidai.com
Definitely believe that that you stated. Your favorite reason seemed to be at the net the simplest thing to
keep in mind of. I say to you, I definitely get annoyed
even as other people consider issues that they plainly don’t recognize about.
You controlled to hit the nail upon the top as well as outlined out
the whole thing without having side-effects , other people could take
a signal. Will probably be again to get more.
Thanks!
My webpage :: 23.95.102.216
Good answer back in return of this matter with real arguments and describing
everything about that.
Wonderful, what a website it is! This blog presents useful data to us, keep it up.
I’m no longer positive where you are getting your info, but
good topic. I needs to spend some time learning more or understanding more.
Thank you for fantastic information I used to be on the lookout
for this information for my mission.
Here is my blog post lose weight
I saw a lot of website but I conceive this one contains something special
in it.
Also visit my homepage: best audio splitter
This paragraph will assist the internet people for setting up new
blog or even a weblog from start to end.
Hiya! I know this is kinda off topic nevertheless I’d figured I’d ask.
Would you be interested in exchanging links or maybe guest writing a blog article or vice-versa?
My blog goes over a lot of the same topics as yours and I believe we could greatly benefit from each other.
If you might be interested feel free to shoot me an email.
I look forward to hearing from you! Excellent blog by the way!
Your style is really unique compared to other people I have read stuff from.
Thanks for posting when you’ve got the opportunity, Guess I will just book mark this web site.
my web site; cannabis license
I’m curious to find out what blog platform you are using?
I’m experiencing some small security issues with my latest blog and I would like to find something more safeguarded.
Do you have any suggestions?
Here is my web-site useful weight-loss