diff --git a/src/com/pms/service/PartMngService.java b/src/com/pms/service/PartMngService.java
index 1c8cde5..c22a18b 100644
--- a/src/com/pms/service/PartMngService.java
+++ b/src/com/pms/service/PartMngService.java
@@ -1793,7 +1793,9 @@ public class PartMngService extends BaseService {
 				String path = CommonUtils.checkNull(fileMap.get("FILE_PATH"));
 				String fileName = CommonUtils.checkNull(fileMap.get("SAVED_FILE_NAME"));
 			
-				FileInputStream fis = new FileInputStream(path+"\\"+fileName);
+				// OS에 관계없이 올바른 경로 생성
+				File excelFile = new File(path, fileName);
+				FileInputStream fis = new FileInputStream(excelFile);
 				XSSFWorkbook workBook = new XSSFWorkbook(fis);
 				XSSFSheet sheet = workBook.getSheetAt(0);
 				HashMap partMap = new HashMap();
@@ -2786,7 +2788,10 @@ public class PartMngService extends BaseService {
 			HashMap fileMap = (HashMap)fileList.get(0);
 			String path = CommonUtils.checkNull(fileMap.get("FILE_PATH"));
 			String fileName = CommonUtils.checkNull(fileMap.get("SAVED_FILE_NAME"));
-			FileInputStream fis = new FileInputStream(path+"\\"+fileName);
+			
+			// OS에 관계없이 올바른 경로 생성
+			File excelFile = new File(path, fileName);
+			FileInputStream fis = new FileInputStream(excelFile);
 			//XSSFWorkbook workBook = new XSSFWorkbook(fis);
 			//FormulaEvaluator formulaEval = workBook.getCreationHelper().createFormulaEvaluator();
 			//XSSFSheet sheet = workBook.getSheetAt(0);
@@ -3212,7 +3217,8 @@ public class PartMngService extends BaseService {
 		BufferedReader br = null;
 		
 		try {
-			File csvFile = new File(path + "\\" + fileName);
+			// OS에 관계없이 올바른 경로 생성
+			File csvFile = new File(path, fileName);
 			
 			// 인코딩 자동 감지: UTF-8 → CP949 → EUC-KR 순서로 시도
 			String detectedEncoding = detectFileEncoding(csvFile);
@@ -3618,8 +3624,9 @@ public class PartMngService extends BaseService {
 				return resultList;
 			}
 			
-			// Excel 파일인 경우
-			FileInputStream fis = new FileInputStream(path+"\\"+fileName);
+			// Excel 파일인 경우 - OS에 관계없이 올바른 경로 생성
+			File excelFile = new File(path, fileName);
+			FileInputStream fis = new FileInputStream(excelFile);
 			
 			Workbook workBook = null;
 			if (fileName.endsWith(".xls") || fileName.endsWith(".XLS")) {
@@ -3834,13 +3841,15 @@ public class PartMngService extends BaseService {
 		System.out.println("projectNo:"+projectNo);
 		if(null != fileList && 1 == fileList.size()){
 			HashMap fileMap = (HashMap)fileList.get(0);
-			
-			String path = CommonUtils.checkNull(fileMap.get("FILE_PATH"));
-			String fileName = CommonUtils.checkNull(fileMap.get("SAVED_FILE_NAME"));
+		
+		String path = CommonUtils.checkNull(fileMap.get("FILE_PATH"));
+		String fileName = CommonUtils.checkNull(fileMap.get("SAVED_FILE_NAME"));
 
 			//boolean isLoggingBoolean = false;
 			
-			FileInputStream fis = new FileInputStream(path+"\\"+fileName);
+			// OS에 관계없이 올바른 경로 생성
+			File excelFile = new File(path, fileName);
+			FileInputStream fis = new FileInputStream(excelFile);
 			//XSSFWorkbook workBook = new XSSFWorkbook(fis);
 			//FormulaEvaluator formulaEval = workBook.getCreationHelper().createFormulaEvaluator();
 			//XSSFSheet sheet = workBook.getSheetAt(0);
@@ -4191,7 +4200,9 @@ public class PartMngService extends BaseService {
 			String path = CommonUtils.checkNull(fileMap.get("FILE_PATH"));
 			String fileName = CommonUtils.checkNull(fileMap.get("SAVED_FILE_NAME"));
 			
-			FileInputStream fis = new FileInputStream(path+"\\"+fileName);
+			// OS에 관계없이 올바른 경로 생성
+			File excelFile = new File(path, fileName);
+			FileInputStream fis = new FileInputStream(excelFile);
 			
 			Workbook workBook = null;
 			if (fileName.endsWith(".xls") || fileName.endsWith(".XLS")) {