Is it correct to use the tag name in class naming?

Question

HTML

As far as I understand, in BEM all elements must have classes. So the question is: is it semantically correct to use tag naming in class naming? And is such a construction correct according to the BEM methodology?
Example:

<header class="header">
</header>

<div class="main">
  <aside class="aside">
  </aside>
  <article class="article">
  </article>
  <nav class="nav">
  </nav>
</div>

<footer class="footer">
</footer>