BST conducts internal audits to determine whether the Quality, Environmental Occupational Health and Safety management system:

• conforms to planned arrangements, to the requirements of ISO 9001 and 14001, OHSAS 18001 management system requirements established by BST
• is effectively implemented and maintained based on the specific criteria, scope, methods, and objectives for the upcoming internal audit defined by management representative, and is based on the status, maturity, and importance of specific elements in BST's management system.

These audits are conducted by a specially educated and certificated group of BST employees. The audit report is submitted for management review, and the NCR/CAR fulfillment and status are controlled by a management representative. The internal audit is conducted twice per year.

Monthly Internal Audit

The monthly internal audit practice was adopted at BST from January 2013. It shows its effectiveness through the checking of the last audit CAR/NCRs and recommendations status, the detection of evident and hidden problems in BST operation, and prepares BST for a complete internal audit.

The internal audit is conducted every month in each department.

The process of the monthly internal audit is not different from the ordinary internal audit and covers all the requirements of ISO 9001, ISO 14001 and OHSAS-18001.