diff --git a/ydb/core/protos/config.proto b/ydb/core/protos/config.proto
index f3799a244b94..bb13b2d17850 100644
--- a/ydb/core/protos/config.proto
+++ b/ydb/core/protos/config.proto
@@ -1685,6 +1685,7 @@ message TColumnShardConfig {
     message TRepairInfo {
         optional string ClassName = 1;
         optional string Description = 2;
+        optional bool DryRun = 3;
     }
     repeated TRepairInfo Repairs = 15;
 
diff --git a/ydb/core/tx/columnshard/columnshard__init.cpp b/ydb/core/tx/columnshard/columnshard__init.cpp
index 57ed8eaa0ecd..ace229ac6ff1 100644
--- a/ydb/core/tx/columnshard/columnshard__init.cpp
+++ b/ydb/core/tx/columnshard/columnshard__init.cpp
@@ -177,6 +177,7 @@ class TTxApplyNormalizer: public TTransactionBase<TColumnShard> {
 public:
     TTxApplyNormalizer(TColumnShard* self, NOlap::INormalizerChanges::TPtr changes)
         : TBase(self)
+        , IsDryRun(self->NormalizerController.GetNormalizer()->GetIsDryRun())
         , Changes(changes) {
     }
 
@@ -187,6 +188,7 @@ class TTxApplyNormalizer: public TTransactionBase<TColumnShard> {
     }
 
 private:
+    const bool IsDryRun;
     bool NormalizerFinished = false;
     NOlap::INormalizerChanges::TPtr Changes;
 };
@@ -194,9 +196,12 @@ class TTxApplyNormalizer: public TTransactionBase<TColumnShard> {
 bool TTxApplyNormalizer::Execute(TTransactionContext& txc, const TActorContext&) {
     NActors::TLogContextGuard gLogging =
         NActors::TLogContextBuilder::Build(NKikimrServices::TX_COLUMNSHARD)("tablet_id", Self->TabletID())("event", "TTxApplyNormalizer::Execute");
-    AFL_INFO(NKikimrServices::TX_COLUMNSHARD)("step", "TTxApplyNormalizer.Execute")("details", Self->NormalizerController.DebugString());
-    if (!Changes->ApplyOnExecute(txc, Self->NormalizerController)) {
-        return false;
+    AFL_INFO(NKikimrServices::TX_COLUMNSHARD)("step", "TTxApplyNormalizer.Execute")("details", Self->NormalizerController.DebugString())(
+        "dry_run", IsDryRun);
+    if (!IsDryRun) {
+        if (!Changes->ApplyOnExecute(txc, Self->NormalizerController)) {
+            return false;
+        }
     }
 
     if (Self->NormalizerController.GetNormalizer()->DecActiveCounters() == 0) {
@@ -211,9 +216,14 @@ void TTxApplyNormalizer::Complete(const TActorContext& ctx) {
     NActors::TLogContextGuard gLogging = NActors::TLogContextBuilder::Build(NKikimrServices::TX_COLUMNSHARD)("tablet_id", Self->TabletID())(
         "event", "TTxApplyNormalizer::Complete");
     AFL_VERIFY(!Self->NormalizerController.IsNormalizationFinished())("details", Self->NormalizerController.DebugString());
-    AFL_WARN(NKikimrServices::TX_COLUMNSHARD)("event", "apply_normalizer_changes")(
-        "details", Self->NormalizerController.DebugString())("size", Changes->GetSize());
-    Changes->ApplyOnComplete(Self->NormalizerController);
+    AFL_WARN(NKikimrServices::TX_COLUMNSHARD)("event", "apply_normalizer_changes")("details", Self->NormalizerController.DebugString())(
+        "size", Changes->GetSize())("dry_run", IsDryRun);
+    if (IsDryRun) {
+        AFL_WARN(NKikimrServices::TX_COLUMNSHARD)("event", "normalizer_changes_dry_run")(
+            "normalizer", Self->NormalizerController.GetNormalizer()->GetClassName())("changes", Changes->DebugString());
+    } else {
+        Changes->ApplyOnComplete(Self->NormalizerController);
+    }
     if (!NormalizerFinished) {
         return;
     }
diff --git a/ydb/core/tx/columnshard/normalizer/abstract/abstract.cpp b/ydb/core/tx/columnshard/normalizer/abstract/abstract.cpp
index a201ed881a67..7ca284d9d8d5 100644
--- a/ydb/core/tx/columnshard/normalizer/abstract/abstract.cpp
+++ b/ydb/core/tx/columnshard/normalizer/abstract/abstract.cpp
@@ -77,7 +77,7 @@ void TNormalizationController::InitNormalizers(const TInitContext& ctx) {
                 auto component = INormalizerComponent::TFactory::MakeHolder(i.GetClassName(), ctx);
                 AFL_VERIFY(component)("class_name", i.GetClassName());
                 auto normalizer = RegisterNormalizer(std::shared_ptr<INormalizerComponent>(component.Release()));
-                normalizer->SetIsRepair(true).SetUniqueDescription(i.GetDescription());
+                normalizer->SetIsRepair(true).SetIsDryRun(i.GetDryRun()).SetUniqueDescription(i.GetDescription());
             }
         }
     }
diff --git a/ydb/core/tx/columnshard/normalizer/abstract/abstract.h b/ydb/core/tx/columnshard/normalizer/abstract/abstract.h
index d0629298e59f..636177db8f74 100644
--- a/ydb/core/tx/columnshard/normalizer/abstract/abstract.h
+++ b/ydb/core/tx/columnshard/normalizer/abstract/abstract.h
@@ -106,6 +106,9 @@ class INormalizerChanges {
     }
 
     virtual ui64 GetSize() const = 0;
+    virtual TString DebugString() const {
+        return TStringBuilder() << "size=" << GetSize();
+    }
 };
 
 class TTrivialNormalizerTask: public INormalizerTask {
@@ -170,6 +173,7 @@ class TNormalizationController {
     class INormalizerComponent {
     private:
         YDB_ACCESSOR(bool, IsRepair, false);
+        YDB_ACCESSOR(bool, IsDryRun, false);
         YDB_ACCESSOR_DEF(TString, UniqueDescription);
         YDB_ACCESSOR(TString, UniqueId, TGUID::CreateTimebased().AsUuidString());
 
diff --git a/ydb/core/tx/columnshard/normalizer/portion/broken_blobs.cpp b/ydb/core/tx/columnshard/normalizer/portion/broken_blobs.cpp
index 9fd03a681c46..86cea4553988 100644
--- a/ydb/core/tx/columnshard/normalizer/portion/broken_blobs.cpp
+++ b/ydb/core/tx/columnshard/normalizer/portion/broken_blobs.cpp
@@ -7,6 +7,8 @@
 #include <ydb/core/tx/columnshard/engines/scheme/filtered_scheme.h>
 #include <ydb/core/tx/columnshard/tables_manager.h>
 
+#include <util/string/vector.h>
+
 namespace NKikimr::NOlap::NNormalizer::NBrokenBlobs {
 
 class TNormalizerResult: public INormalizerChanges {
@@ -33,17 +35,8 @@ class TNormalizerResult: public INormalizerChanges {
             copy.SaveMetaToDatabase(db);
         }
         if (BrokenPortions.size()) {
-            TStringBuilder sb;
-            ui64 recordsCount = 0;
-            sb << "path_ids:[";
-            for (auto&& [_, p] : BrokenPortions) {
-                sb << p.GetPortionInfo().GetPathId() << ",";
-                recordsCount += p.GetPortionInfo().GetRecordsCount();
-            }
-            sb << "];";
-            sb << "records_count:" << recordsCount;
             NIceDb::TNiceDb db(txc.DB);
-            normController.AddNormalizerEvent(db, "REMOVE_PORTIONS", sb);
+            normController.AddNormalizerEvent(db, "REMOVE_PORTIONS", DebugString());
         }
         return true;
     }
@@ -54,6 +47,19 @@ class TNormalizerResult: public INormalizerChanges {
     ui64 GetSize() const override {
         return BrokenPortions.size();
     }
+
+    TString DebugString() const override {
+        TStringBuilder sb;
+        ui64 recordsCount = 0;
+        sb << "path_ids=[";
+        for (auto&& [_, p] : BrokenPortions) {
+            sb << p.GetPortionInfo().GetPathId() << ",";
+            recordsCount += p.GetPortionInfo().GetRecordsCount();
+        }
+        sb << "]";
+        sb << ";records_count=" << recordsCount;
+        return sb;
+    }
 };
 
 class TReadTask: public NOlap::NBlobOperations::NRead::ITask {
diff --git a/ydb/core/tx/columnshard/normalizer/portion/leaked_blobs.cpp b/ydb/core/tx/columnshard/normalizer/portion/leaked_blobs.cpp
index b51d8c43c6db..d8e0d5f48428 100644
--- a/ydb/core/tx/columnshard/normalizer/portion/leaked_blobs.cpp
+++ b/ydb/core/tx/columnshard/normalizer/portion/leaked_blobs.cpp
@@ -9,6 +9,8 @@
 
 #include <ydb/library/actors/core/actor.h>
 
+#include <util/string/vector.h>
+
 namespace NKikimr::NOlap {
 
 class TLeakedBlobsNormalizerChanges: public INormalizerChanges {
@@ -16,12 +18,17 @@ class TLeakedBlobsNormalizerChanges: public INormalizerChanges {
     THashSet<TLogoBlobID> Leaks;
     const ui64 TabletId;
     NColumnShard::TBlobGroupSelector DsGroupSelector;
+    ui64 LeakeadBlobsSize;
 
 public:
     TLeakedBlobsNormalizerChanges(THashSet<TLogoBlobID>&& leaks, const ui64 tabletId, NColumnShard::TBlobGroupSelector dsGroupSelector)
         : Leaks(std::move(leaks))
         , TabletId(tabletId)
         , DsGroupSelector(dsGroupSelector) {
+        LeakeadBlobsSize = 0;
+        for (const auto& blob : Leaks) {
+            LeakeadBlobsSize += blob.BlobSize();
+        }
     }
 
     bool ApplyOnExecute(NTabletFlatExecutor::TTransactionContext& txc, const TNormalizationController& /*normController*/) const override {
@@ -42,6 +49,18 @@ class TLeakedBlobsNormalizerChanges: public INormalizerChanges {
     ui64 GetSize() const override {
         return Leaks.size();
     }
+
+    TString DebugString() const override {
+        TStringBuilder sb;
+        sb << "tablet=" << TabletId;
+        sb << ";leaked_blob_count=" << Leaks.size();
+        sb << ";leaked_blobs_size=" << LeakeadBlobsSize;
+        auto blobSampleEnd = Leaks.begin();
+        for (ui64 i = 0; i < 10 && blobSampleEnd != Leaks.end(); ++i, ++blobSampleEnd) {
+        }
+        sb << ";leaked_blobs=[" << JoinStrings(Leaks.begin(), blobSampleEnd, ",") << "]";
+        return sb;
+    }
 };
 
 class TRemoveLeakedBlobsActor: public TActorBootstrapped<TRemoveLeakedBlobsActor> {
@@ -156,7 +175,8 @@ TConclusion<std::vector<INormalizerTask::TPtr>> TLeakedBlobsNormalizer::DoInit(
     NIceDb::TNiceDb db(txc.DB);
     const bool ready = (int)Schema::Precharge<Schema::IndexPortions>(db, txc.DB.GetScheme()) &
                        (int)Schema::Precharge<Schema::IndexColumns>(db, txc.DB.GetScheme()) &
-                       (int)Schema::Precharge<Schema::IndexIndexes>(db, txc.DB.GetScheme());
+                       (int)Schema::Precharge<Schema::IndexIndexes>(db, txc.DB.GetScheme()) &
+                       (int)Schema::Precharge<Schema::BlobsToDeleteWT>(db, txc.DB.GetScheme());
     if (!ready) {
         return TConclusionStatus::Fail("Not ready");
     }
@@ -219,6 +239,24 @@ TConclusionStatus TLeakedBlobsNormalizer::LoadPortionBlobIds(
         }
         Indexes = std::move(indexesLocal);
     }
+    if (BlobsToDelete.empty()) {
+        THashSet<TUnifiedBlobId> blobsToDelete;
+        auto rowset = db.Table<NColumnShard::Schema::BlobsToDeleteWT>().Select();
+        if (!rowset.IsReady()) {
+            return TConclusionStatus::Fail("Not ready: BlobsToDeleteWT");
+        }
+        while (!rowset.EndOfSet()) {
+            const TString& blobIdStr = rowset.GetValue<NColumnShard::Schema::BlobsToDeleteWT::BlobId>();
+            TString error;
+            TUnifiedBlobId blobId = TUnifiedBlobId::ParseFromString(blobIdStr, &DsGroupSelector, error);
+            AFL_VERIFY(blobId.IsValid())("event", "cannot_parse_blob")("error", error)("original_string", blobIdStr);
+            blobsToDelete.emplace(blobId);
+            if (!rowset.Next()) {
+                return TConclusionStatus::Fail("Local table is not loaded: BlobsToDeleteWT");
+            }
+        }
+        BlobsToDelete = std::move(blobsToDelete);
+    }
     AFL_VERIFY(Portions.size() == Records.size())("portions", Portions.size())("records", Records.size());
     THashSet<TLogoBlobID> resultLocal;
     for (auto&& i : Portions) {
@@ -240,6 +278,9 @@ TConclusionStatus TLeakedBlobsNormalizer::LoadPortionBlobIds(
         for (auto&& c : it->second) {
             resultLocal.emplace(c.GetLogoBlobId());
         }
+        for (const auto& c : BlobsToDelete) {
+            resultLocal.emplace(c.GetLogoBlobId());
+        }
     }
     std::swap(resultLocal, result);
     return TConclusionStatus::Success();
diff --git a/ydb/core/tx/columnshard/normalizer/portion/leaked_blobs.h b/ydb/core/tx/columnshard/normalizer/portion/leaked_blobs.h
index 4545ea3b605b..1a4617e2cd67 100644
--- a/ydb/core/tx/columnshard/normalizer/portion/leaked_blobs.h
+++ b/ydb/core/tx/columnshard/normalizer/portion/leaked_blobs.h
@@ -45,5 +45,6 @@ class TLeakedBlobsNormalizer: public TNormalizationController::INormalizerCompon
     THashMap<ui64, TPortionInfoConstructor> Portions;
     THashMap<ui64, std::vector<TColumnChunkLoadContextV1>> Records;
     THashMap<ui64, std::vector<TIndexChunkLoadContext>> Indexes;
+    THashSet<TUnifiedBlobId> BlobsToDelete;
 };
 }   // namespace NKikimr::NOlap