diff --git a/AsbCloudApp/CyclycArray.cs b/AsbCloudApp/CyclycArray.cs
index 472957f1..f47edc5b 100644
--- a/AsbCloudApp/CyclycArray.cs
+++ b/AsbCloudApp/CyclycArray.cs
@@ -91,7 +91,7 @@ namespace System.Collections.Generic
             get
             {
                 if (used == 0)
-                    return default;
+                    throw new IndexOutOfRangeException();
 
                 var i = (current + 1 + index) % used;
                 return array[i];
diff --git a/AsbCloudApp/Data/Subsystems/SubsystemActiveWellStatDto.cs b/AsbCloudApp/Data/Subsystems/SubsystemActiveWellStatDto.cs
index 2b62f171..2aee1d7f 100644
--- a/AsbCloudApp/Data/Subsystems/SubsystemActiveWellStatDto.cs
+++ b/AsbCloudApp/Data/Subsystems/SubsystemActiveWellStatDto.cs
@@ -10,7 +10,7 @@ namespace AsbCloudApp.Data.Subsystems
         /// <summary>
         /// Активная скважина
         /// </summary>
-        public WellDto Well { get; set; }        
+        public WellDto Well { get; set; } = null!;
         /// <summary>
         /// Наработки подсистемы АКБ
         /// </summary>
diff --git a/AsbCloudApp/Repositories/IFileStorageRepository.cs b/AsbCloudApp/Repositories/IFileStorageRepository.cs
index 0d867db0..6118cc7a 100644
--- a/AsbCloudApp/Repositories/IFileStorageRepository.cs
+++ b/AsbCloudApp/Repositories/IFileStorageRepository.cs
@@ -51,7 +51,6 @@ namespace AsbCloudApp.Repositories
         /// <summary>
         /// Вывод списка всех файлов из базы, для которых нет файла на диске
         /// </summary>
-        /// <param name="idWell"></param>
         /// <param name="files"></param>
         /// <returns></returns>
         IEnumerable<FileInfoDto> GetListFilesNotDisc(IEnumerable<FileInfoDto> files);
diff --git a/AsbCloudApp/Services/FileService.cs b/AsbCloudApp/Services/FileService.cs
index 3ba250aa..9b7ca156 100644
--- a/AsbCloudApp/Services/FileService.cs
+++ b/AsbCloudApp/Services/FileService.cs
@@ -165,15 +165,6 @@ namespace AsbCloudApp.Services
         public async Task<IEnumerable<FileInfoDto>> GetInfoByIdsAsync(IEnumerable<int> idsFile, CancellationToken token)
         {
             var result = await fileRepository.GetInfoByIdsAsync(idsFile, token).ConfigureAwait(false);
-
-            foreach (var entity in result)
-            {
-                
-                var ext = Path.GetExtension(entity.Name);
-                var relativePath = GetUrl(entity.IdWell, entity.IdCategory, entity.Id, ext);
-                var fullPath = Path.GetFullPath(relativePath);
-            }
-
             return result;
         }
 
diff --git a/AsbCloudApp/Services/IAuthService.cs b/AsbCloudApp/Services/IAuthService.cs
index 80e9e3d7..93d14124 100644
--- a/AsbCloudApp/Services/IAuthService.cs
+++ b/AsbCloudApp/Services/IAuthService.cs
@@ -5,6 +5,7 @@ using System.Threading.Tasks;
 
 namespace AsbCloudApp.Services
 {
+#nullable enable
     /// <summary>
     /// Сервис авторизации
     /// </summary>
@@ -33,13 +34,14 @@ namespace AsbCloudApp.Services
         /// <param name="password"></param>
         /// <param name="token">токен отмены задачи</param>
         /// <returns></returns>
-        Task<UserTokenDto> LoginAsync(string login,
+        Task<UserTokenDto?> LoginAsync(string login,
             string password, CancellationToken token = default);
 
         /// <summary>
         /// Обновление токена авторизации
         /// </summary>
-        /// <param name="user"></param>
+        /// <param name="identity"></param>
+        /// <param name="token"></param>
         /// <returns></returns>
         Task<UserTokenDto?> RefreshAsync(ClaimsPrincipal identity,
             CancellationToken token);
@@ -51,4 +53,5 @@ namespace AsbCloudApp.Services
         /// <returns></returns>
         int Register(UserRegistrationDto userDto);
     }
+#nullable disable
 }
\ No newline at end of file
diff --git a/AsbCloudApp/Services/IFileCategoryService.cs b/AsbCloudApp/Services/IFileCategoryService.cs
index 70441331..91ca05a7 100644
--- a/AsbCloudApp/Services/IFileCategoryService.cs
+++ b/AsbCloudApp/Services/IFileCategoryService.cs
@@ -10,6 +10,12 @@ namespace AsbCloudApp.Services
     /// </summary>
     public interface IFileCategoryService
     {
+        /// <summary>
+        /// Получить категории файлов
+        /// </summary>
+        /// <param name="id"></param>
+        /// <param name="token"></param>
+        /// <returns></returns>
         Task<FileCategoryDto> GetOrDefaultAsync(int id, CancellationToken token);
 
         /// <summary>
diff --git a/AsbCloudApp/Services/Subsystems/ISubsystemService.cs b/AsbCloudApp/Services/Subsystems/ISubsystemService.cs
index 7daf7d68..ff26a4d2 100644
--- a/AsbCloudApp/Services/Subsystems/ISubsystemService.cs
+++ b/AsbCloudApp/Services/Subsystems/ISubsystemService.cs
@@ -6,8 +6,19 @@ using System.Threading.Tasks;
 namespace AsbCloudApp.Services.Subsystems
 {
 #nullable enable
+    // TODO: move this to repositories
+
+    /// <summary>
+    /// репозиторий получения подсистем
+    /// </summary>
     public interface ISubsystemService
     {
+        /// <summary>
+        /// получение списка подсистем. Если скважина указана, то получим только использованные в скважине подсистемы.
+        /// </summary>
+        /// <param name="idWell"></param>
+        /// <param name="token"></param>
+        /// <returns></returns>
         Task<IEnumerable<SubsystemDto>?> GetSubsystemAsync(int? idWell, CancellationToken token);
     }
 #nullable disable
diff --git a/AsbCloudDb/Model/AsbCloudDbContext.cs b/AsbCloudDb/Model/AsbCloudDbContext.cs
index dc68f38c..31deda55 100644
--- a/AsbCloudDb/Model/AsbCloudDbContext.cs
+++ b/AsbCloudDb/Model/AsbCloudDbContext.cs
@@ -59,15 +59,7 @@ namespace AsbCloudDb.Model
         public DbSet<WITS.Record50> Record50 => Set<WITS.Record50>();
         public DbSet<WITS.Record60> Record60 => Set<WITS.Record60>();
         public DbSet<WITS.Record61> Record61 => Set<WITS.Record61>();
-
-        private System.Text.Json.JsonSerializerOptions jsonSerializerOptions = new() 
-        {
-            AllowTrailingCommas = true,
-            WriteIndented = true,
-            NumberHandling = System.Text.Json.Serialization.JsonNumberHandling.AllowReadingFromString |
-                System.Text.Json.Serialization.JsonNumberHandling.AllowNamedFloatingPointLiterals,
-        };
-
+        
         public AsbCloudDbContext() : base()
         {
         }
@@ -368,10 +360,5 @@ namespace AsbCloudDb.Model
             var sql = $"REFRESH MATERIALIZED VIEW {materializedViewName};";
             return Database.ExecuteSqlRawAsync(sql, token);
         }
-
-        public Task<int> RefreshMaterializedViewAsync<TEntity>(string? mwName = null, CancellationToken token = default) where TEntity : class
-        {
-            throw new System.NotImplementedException();
-        }
     }
 }
diff --git a/AsbCloudDb/Model/DailyReport/Bha.cs b/AsbCloudDb/Model/DailyReport/Bha.cs
index 5167c4b8..92c5c9b8 100644
--- a/AsbCloudDb/Model/DailyReport/Bha.cs
+++ b/AsbCloudDb/Model/DailyReport/Bha.cs
@@ -5,58 +5,57 @@
         /// <summary>
         /// КНБК описание
         /// </summary>
-        public string BHADescription { get; set; }
+        public string BHADescription { get; set; } = string.Empty;
 
         /// <summary>
         /// Бурение с наращиваниями в инт. 2195-2763м. Время начала
         /// </summary>
-        public string ExtensionDrillingOneBegin { get; set; }
+        public string ExtensionDrillingOneBegin { get; set; } = string.Empty;
 
         /// <summary>
         /// Бурение с наращиваниями в инт. 2195-2763м. Время окончания
         /// </summary>
-        public string ExtensionDrillingOneFinish { get; set; }
+        public string ExtensionDrillingOneFinish { get; set; } = string.Empty;
 
         /// <summary>
         /// Промывка. Время начала
         /// </summary>
-        public string SluiceBegin { get; set; }
+        public string SluiceBegin { get; set; } = string.Empty;
 
         /// <summary>
         /// Промывка. Время окончания
         /// </summary>
-        public string SluiceFinish { get; set; }
+        public string SluiceFinish { get; set; } = string.Empty;
 
         /// <summary>
         /// Подьем КНБК. Время начала
         /// </summary>
-        public string ClimbBegin { get; set; }
+        public string ClimbBegin { get; set; } = string.Empty;
 
         /// <summary>
         /// Подьем КНБК. Время окончания
         /// </summary>
-        public string ClimbFinish { get; set; }
+        public string ClimbFinish { get; set; } = string.Empty;
 
         /// <summary>
         /// Спуск КНБК. Время начала
         /// </summary>
-        public string DescentBegin { get; set; }
+        public string DescentBegin { get; set; } = string.Empty;
 
         /// <summary>
         /// Спуск КНБК. Время окончания
         /// </summary>
-        public string DescentFinish { get; set; }
+        public string DescentFinish { get; set; } = string.Empty;
 
         /// <summary>
         /// Бурение с наращиваниями в инт. 2763-2850м. Время начала
         /// </summary>
-        public string ExtensionDrillingTwoBegin { get; set; }
+        public string ExtensionDrillingTwoBegin { get; set; } = string.Empty;
 
         /// <summary>
         /// Бурение с наращиваниями в инт. 2763-2850м. Время окончания
         /// </summary>
-        public string ExtensionDrillingTwoFinish { get; set; }
+        public string ExtensionDrillingTwoFinish { get; set; } = string.Empty;
 
     }
 }
-
diff --git a/AsbCloudDb/Model/DailyReport/Head.cs b/AsbCloudDb/Model/DailyReport/Head.cs
index 8d90a556..16ef0fc1 100644
--- a/AsbCloudDb/Model/DailyReport/Head.cs
+++ b/AsbCloudDb/Model/DailyReport/Head.cs
@@ -6,22 +6,22 @@ namespace AsbCloudDb.Model.DailyReport
         /// <summary>
         /// название скважины
         /// </summary>
-        public string WellName { get; set; }
+        public string WellName { get; set; } = string.Empty;
 
         /// <summary>
         /// название куста
         /// </summary>
-        public string ClusterName { get; set; }
+        public string ClusterName { get; set; } = string.Empty;
 
         /// <summary>
         /// заказчик
         /// </summary>
-        public string Customer { get; set; }
+        public string Customer { get; set; } = string.Empty;
 
         /// <summary>
         /// подрядчик
         /// </summary>
-        public string Contractor { get; set; }
+        public string Contractor { get; set; } = string.Empty;
 
         /// <summary>
         /// дата рапорта
@@ -61,12 +61,12 @@ namespace AsbCloudDb.Model.DailyReport
         /// <summary>
         /// ФИО бурильщиков
         /// </summary>
-        public string FirstDriller { get; set; }
+        public string FirstDriller { get; set; } = string.Empty;
 
         /// <summary>
         /// ФИО бурильщиков
         /// </summary>
-        public string SecondDriller { get; set; }
+        public string SecondDriller { get; set; } = string.Empty;
 
         /// <summary>
         /// Время работы АПД
diff --git a/AsbCloudDb/Model/DailyReport/Saub.cs b/AsbCloudDb/Model/DailyReport/Saub.cs
index dae26861..7399f148 100644
--- a/AsbCloudDb/Model/DailyReport/Saub.cs
+++ b/AsbCloudDb/Model/DailyReport/Saub.cs
@@ -72,32 +72,32 @@ namespace AsbCloudDb.Model.DailyReport
         /// <summary>
         /// указываются все причины, которые влияют на снижение МСП.
         /// </summary>
-        public string DeclinesReasonsROP { get; set; }
+        public string DeclinesReasonsROP { get; set; } = string.Empty;
 
         /// <summary>
         /// Увеличение мех скорости за секцию %
         /// </summary>
-        public string IncreaseSpeedSection { get; set; }
+        public string IncreaseSpeedSection { get; set; } = string.Empty;
 
         /// <summary>
         /// Увеличение мех скорости за сутки %
         /// </summary>
-        public string IncreaseSpeedDay { get; set; }
+        public string IncreaseSpeedDay { get; set; } = string.Empty;
 
         /// <summary>
         /// Сокращение времени бурения за секцию, ч
         /// </summary>
-        public string ReductionTimeDrilling { get; set; }
+        public string ReductionTimeDrilling { get; set; } = string.Empty;
 
         /// <summary>
         /// Ротор/Слайд %
         /// </summary>
-        public string RotorSlidePercent { get; set; }
+        public string RotorSlidePercent { get; set; } = string.Empty;
 
         /// <summary>
         /// МСП
         /// </summary>
-        public string MspSection { get; set; }
+        public string MspSection { get; set; } = string.Empty;
 
     }
 }
diff --git a/AsbCloudDb/Model/DailyReport/Sign.cs b/AsbCloudDb/Model/DailyReport/Sign.cs
index ebef294d..78271fe9 100644
--- a/AsbCloudDb/Model/DailyReport/Sign.cs
+++ b/AsbCloudDb/Model/DailyReport/Sign.cs
@@ -5,12 +5,12 @@
         /// <summary>
         /// ФИО Мастера буровой
         /// </summary>
-        public string DrillingMaster { get; set; }
+        public string DrillingMaster { get; set; } = string.Empty;
 
         /// <summary>
         /// ФИО супервайзера
         /// </summary>
-        public string Supervisor { get; set; }
+        public string Supervisor { get; set; } = string.Empty;
     }
 }
 
diff --git a/AsbCloudDb/Model/DailyReport/TimeBalance.cs b/AsbCloudDb/Model/DailyReport/TimeBalance.cs
index a2d3a7e7..ee8c19f7 100644
--- a/AsbCloudDb/Model/DailyReport/TimeBalance.cs
+++ b/AsbCloudDb/Model/DailyReport/TimeBalance.cs
@@ -5,92 +5,92 @@
         /// <summary>
         /// Бурение
         /// </summary>
-        public string Drilling { get; set; }
+        public string Drilling { get; set; } = string.Empty;
 
         /// <summary>
         /// Промывка
         /// </summary>
-        public string Flushing { get; set; }
+        public string Flushing { get; set; } = string.Empty;
 
         /// <summary>
         /// Наращивание
         /// </summary>
-        public string Building { get; set; }
+        public string Building { get; set; } = string.Empty;
 
         /// <summary>
         /// Проработка
         /// </summary>
-        public string Elaboration { get; set; }
+        public string Elaboration { get; set; } = string.Empty;
 
         /// <summary>
         /// Расширка
         /// </summary>
-        public string Extension { get; set; }
+        public string Extension { get; set; } = string.Empty;
 
         /// <summary>
         /// Ремонт
         /// </summary>
-        public string Repair { get; set; }
+        public string Repair { get; set; } = string.Empty;
 
         /// <summary>
         /// КНБК
         /// </summary>
-        public string Knbk { get; set; }
+        public string Knbk { get; set; } = string.Empty;
 
         /// <summary>
         /// СПО
         /// </summary>
-        public string Spo { get; set; }
+        public string Spo { get; set; } = string.Empty;
 
         /// <summary>
         /// ПЗР
         /// </summary>
-        public string Pzr { get; set; }
+        public string Pzr { get; set; } = string.Empty;
 
         /// <summary>
         /// ПВО
         /// </summary>
-        public string Pvo { get; set; }
+        public string Pvo { get; set; } = string.Empty;
 
         /// <summary>
         /// ПГР
         /// </summary>
-        public string Pgr { get; set; }
+        public string Pgr { get; set; } = string.Empty;
 
         /// <summary>
         /// ГИС
         /// </summary>
-        public string Gis { get; set; }
+        public string Gis { get; set; } = string.Empty;
 
         /// <summary>
         /// ОЗЦ
         /// </summary>
-        public string Ozc { get; set; }
+        public string Ozc { get; set; } = string.Empty;
 
         /// <summary>
         /// Тех. работы
         /// </summary>
-        public string EngineeringWorks { get; set; }
+        public string EngineeringWorks { get; set; } = string.Empty;
 
         /// <summary>
         /// Снятие замера
         /// </summary>
-        public string TakingMeasure { get; set; }
+        public string TakingMeasure { get; set; } = string.Empty;
 
         /// <summary>
         /// Цементирование
         /// </summary>
-        public string Cementing { get; set; }
+        public string Cementing { get; set; } = string.Empty;
 
         /// <summary>
         /// Простой
         /// </summary>
-        public string Simple { get; set; }
+        public string Simple { get; set; } = string.Empty;
 
         /// <summary>
         /// НПВ
         /// </summary>
-        public string Npv { get; set; }
+        public string Npv { get; set; } = string.Empty;
     }
 }
 
diff --git a/AsbCloudInfrastructure/DependencyInjection.cs b/AsbCloudInfrastructure/DependencyInjection.cs
index a7bf3469..b55581ce 100644
--- a/AsbCloudInfrastructure/DependencyInjection.cs
+++ b/AsbCloudInfrastructure/DependencyInjection.cs
@@ -91,7 +91,8 @@ namespace AsbCloudInfrastructure
             services.AddDbContext<AsbCloudDbContext>(options =>
                 options.UseNpgsql(configuration.GetConnectionString(connectionStringName)));
 
-            services.AddFluentValidation();
+            // TODO: переместить FluentValidation в описание моделей
+            services.AddFluentValidationClientsideAdapters();
 
             services.AddMemoryCache();
             services.AddScoped<IAsbCloudDbContext>(provider => provider.GetService<AsbCloudDbContext>());
diff --git a/AsbCloudInfrastructure/Services/DailyReport/DailyReportService.cs b/AsbCloudInfrastructure/Services/DailyReport/DailyReportService.cs
index 1ba5b36d..67e66eb5 100644
--- a/AsbCloudInfrastructure/Services/DailyReport/DailyReportService.cs
+++ b/AsbCloudInfrastructure/Services/DailyReport/DailyReportService.cs
@@ -12,6 +12,7 @@ using AsbCloudApp.Data.DailyReport;
 using AsbCloudApp.Requests;
 using AsbCloudInfrastructure.Services.DetectOperations;
 using AsbCloudApp.Data.DetectedOperation;
+using AsbCloudApp.Exceptions;
 
 namespace AsbCloudInfrastructure.Services.DailyReport
 {
@@ -34,7 +35,8 @@ namespace AsbCloudInfrastructure.Services.DailyReport
         {
             var well = wellService.GetOrDefault(idWell);
             if (well is null || well.Timezone is null)
-                return null;
+                throw new ArgumentInvalidException("idWell doesn`t exist", nameof(idWell));
+
             var query = db.DailyReports.Where(r => r.IdWell == idWell);
 
             DateTimeOffset ExtractDate(DateTime dateTime)
@@ -65,9 +67,8 @@ namespace AsbCloudInfrastructure.Services.DailyReport
         public async Task<DailyReportDto> GetOrGenerateAsync(int idWell, DateTime date, CancellationToken token)
         {
             var dateOnly = DateTime.SpecifyKind(date.Date, DateTimeKind.Utc);
-            var dailyReportDto = await GetAsync(idWell, dateOnly, token);
-            if (dailyReportDto is null)
-                dailyReportDto = await MakeDefaultDailyReportAsync(idWell, dateOnly, token);            
+            var dailyReportDto = await GetOrDefaultAsync(idWell, dateOnly, token);
+            dailyReportDto ??= await MakeDefaultDailyReportAsync(idWell, dateOnly, token);            
             return dailyReportDto;
         }
 
@@ -105,7 +106,7 @@ namespace AsbCloudInfrastructure.Services.DailyReport
 
         public async Task<Stream?> MakeReportAsync(int idWell, DateTime date, CancellationToken token = default)
         {
-            var dailyReportDto = await GetAsync(idWell, date, token);
+            var dailyReportDto = await GetOrDefaultAsync(idWell, date, token);
             if (dailyReportDto is null)
                 return null;
 
@@ -113,7 +114,7 @@ namespace AsbCloudInfrastructure.Services.DailyReport
             return memoryStream;
         }
 
-        private async Task<DailyReportDto?> GetAsync(int idWell, DateTime date, CancellationToken token)
+        private async Task<DailyReportDto?> GetOrDefaultAsync(int idWell, DateTime date, CancellationToken token)
         {
             var dateOffset = date.Date;
             var entity = await db.DailyReports
diff --git a/AsbCloudWebApi/Controllers/FileController.cs b/AsbCloudWebApi/Controllers/FileController.cs
index 1340c55a..53b2fc52 100644
--- a/AsbCloudWebApi/Controllers/FileController.cs
+++ b/AsbCloudWebApi/Controllers/FileController.cs
@@ -37,7 +37,7 @@ namespace AsbCloudWebApi.Controllers
         /// <param name="idWell">id скважины</param>
         /// <param name="idCategory">id категории файла</param>
         /// <param name="files">Коллекция файлов</param>
-        /// <param name="userService">dependency</param>
+        /// <param name="userRepository">dependency</param>
         /// <param name="token"> Токен отмены задачи </param>
         /// <returns></returns>
         [HttpPost]
@@ -100,7 +100,6 @@ namespace AsbCloudWebApi.Controllers
         /// <summary>
         /// Возвращает файл с диска на сервере
         /// </summary>
-        /// <param name="idWell">id скважины</param>
         /// <param name="idFile">id запрашиваемого файла</param>
         /// <param name="token"> Токен отмены задачи </param>
         /// <returns>Запрашиваемый файл</returns>
@@ -108,7 +107,7 @@ namespace AsbCloudWebApi.Controllers
         [Route("{idFile}")]
         [Permission]
         [ProducesResponseType(typeof(PhysicalFileResult), (int)System.Net.HttpStatusCode.OK)]
-        public async Task<IActionResult> GetFileAsync([FromRoute] int idWell,
+        public async Task<IActionResult> GetFileAsync(
             int idFile, CancellationToken token = default)
         {
             int? idCompany = User.GetCompanyId();
@@ -135,7 +134,7 @@ namespace AsbCloudWebApi.Controllers
         /// </summary>
         /// <param name="idWell">id скважины</param>
         /// <param name="idFile">id запрашиваемого файла</param>
-        /// <param name="userService">dependency</param>
+        /// <param name="userRepository">dependency</param>
         /// <param name="token">Токен отмены задачи </param>
         /// <returns></returns>
         [HttpDelete("{idFile}")]