Устранение недостатков требуется вне зависимости от превышения сметы.

Устранение is a verbal noun meaning elimination, removal, or correction. Russian often uses this kind of noun in formal, legal, technical, and bureaucratic language.

So instead of saying something more direct like:

• Нужно устранить недостатки. = The defects must be corrected.

the sentence uses the more official-sounding:

• Устранение недостатков требуется. = literally The correction of defects is required.

This style is very common in contracts, regulations, inspection reports, and official instructions.

Недостатков is in the genitive plural.

That happens because устранение is a verbal noun, and the thing being eliminated or corrected is often put in the genitive after it.

Compare:

• устранить недостатки = to eliminate/correct defects
  Here недостатки is the direct object, so it is in the accusative plural.

• устранение недостатков = elimination/correction of defects
  After the noun устранение, Russian uses the genitive: недостатков.

This is similar to English correction of defects rather than correct defects.

Because the grammatical subject is the whole noun phrase устранение недостатков, and its head word is устранение, which is:

• singular
• neuter

So the verb agrees with устранение:

• Устранение ... требуется.

If the subject were plural, the verb would be plural too. For example:

• Исправления требуются. = Corrections are required.

Even though недостатков is plural, it is not the head of the subject phrase. The head is устранение.

Yes, in this kind of sentence требуется is best understood as is required or is necessary.

It comes from требоваться, which often means:

• to be required
• to be needed

So:

• Устранение недостатков требуется
  = Correction of the defects is required

This is a standard official way to avoid saying directly who requires it. It sounds impersonal and formal.

A more direct version could be:

• Мы требуем устранения недостатков. = We require correction of the defects.
• Нужно устранить недостатки. = The defects need to be corrected.

Yes, вне зависимости от is a fixed formal expression meaning:

• regardless of
• irrespective of
• independent of

It is commonly used in official and written Russian.

Examples:

• вне зависимости от обстоятельств = regardless of the circumstances
• вне зависимости от возраста = regardless of age

In your sentence:

• вне зависимости от превышения сметы
  = regardless of the budget overrun

This expression requires the genitive case after от.

Because it comes after от in the fixed phrase вне зависимости от, and от requires the genitive.

Base form:

• превышение = exceeding / excess / overrun

After от:

• от превышения

So:

• вне зависимости от превышения
  = regardless of the exceeding / overrun

This is just normal case government after the preposition.

Because превышение сметы is another noun + genitive construction.

Here:

• превышение = exceeding / overrun
• сметы = of the estimate / of the budget

So:

• превышение сметы literally means exceeding of the estimate
• more naturally in English: budget overrun or exceeding the cost estimate

This is similar to:

• проверка документов = checking of documents
• устранение ошибок = correction of errors
• составление отчёта = preparation of a report

Russian often uses a verbal noun followed by a genitive noun.

Смета usually means a cost estimate, project estimate, or budget calculation, especially in construction, repair, procurement, and other formal financial contexts.

So depending on context, превышение сметы can be translated as:

• exceeding the estimate
• budget overrun
• cost overrun

It is not always the same as a general personal or government budget. It often refers to a specific planned cost document for a project.

It is grammatical and natural, but it sounds formal, official, and somewhat bureaucratic.

A more everyday or straightforward version might be:

• Недостатки нужно устранить, даже если смета превышена.
• Недостатки нужно устранить независимо от превышения сметы.

The original sentence sounds like something from:

• a contract
• an inspection report
• a technical requirement
• an official notice

So yes, it is natural, but mainly in formal written contexts.

Yes. Независимо от is a very common alternative and usually means the same thing:

• Устранение недостатков требуется независимо от превышения сметы.

This sounds slightly less heavy than вне зависимости от, but both are correct.

Very roughly:

• вне зависимости от = more formal, heavier, more bureaucratic
• независимо от = a bit more neutral and common

In legal or official writing, both are frequent.

Yes, word order in Russian is flexible, especially in formal writing. But changing it can shift emphasis.

Original:

• Устранение недостатков требуется вне зависимости от превышения сметы.

Possible variants:

• Вне зависимости от превышения сметы устранение недостатков требуется.
• Устранение недостатков вне зависимости от превышения сметы требуется.

The original version is clear and standard. It presents the main point first: the correction of defects is required, then adds the condition: regardless of the budget overrun.

In official Russian, this kind of structure is very common.

Not always. Недостатки can mean different things depending on context:

• defects
• shortcomings
• faults
• deficiencies

In a technical, construction, or product-quality context, it often means defects or faults.

In a more abstract context, it could mean shortcomings:

• недостатки плана = shortcomings of the plan
• недостатки работы = deficiencies in the work

In your sentence, because of the formal and project-related wording, defects or deficiencies is probably the best fit.

A few words may be worth noticing:

• устране́ние
• недоста́тков
• тре́буется
• зави́симости
• превыше́ния
• сме́ты

A common difficulty for learners is that long formal nouns like устранение and превышение may look intimidating, but they are built from common verb roots:

• устранить → устранение
• превысить / превышать → превышение

If you learn to recognize those noun patterns, official Russian becomes much easier to read.

A simpler version would be:

• Недостатки нужно устранить, даже если расходы превысили смету.
• Недостатки нужно устранить, даже при превышении сметы.
• Недостатки нужно исправить независимо от того, превышена смета или нет.

These versions use more direct wording and are often easier for learners to process.

The original sentence is more compact and formal because it uses several abstract nouns:

• устранение
• зависимость
• превышение

That style is typical of administrative Russian.