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## 4 General Requirements for the Execution and Completion of the Works 

The present section includes the general requirements for the execution and completion of the works supplementing the descriptions in the Conditions of Contract for Plant and Design-Build (referred to throughout this Section as the Yellow Book) and in Volume 2: Conditions of Contract. 

References to the relevant sub-clauses in the Yellow Book and Volume 2: Conditions of Contract are given in the sub-sections below. 

## 4.1 Safety Procedures 

 (Yellow Book, Sub-Clause 4.8) 

The Contractor shall set-up a suitable temporary fence around the wastewater treatment plant site and if applicable at pipeline construction sites, during the performance of the Contract, in order to protect the sites from public access, animal vagabondage etc. The wastewater treatment plant shall have only one entrance gate, in order to ensure an efficient control over the site traffic. 

The Contractor shall within 30 days of the commencement date provide safety procedures for all elements of the works. 

## 4.2 Quality Assurance System 

## 4.2.1 General 

(Yellow Book, Sub-Clause 4.9) 

The Employer and the Contractor herein confirm their commitment towards the quality of the Contract and in order to respond to the Contract requirements in an optimal way, a quality assurance system shall be established. 

A quality assurance plan shall be prepared by the Contractor where the Employer, the Engineer, and the Head of the PIU shall participate actively in its development. 

## 4.2.2 Standards and Recommendations 

The Contractor shall make sure that the quality control complies with the effective Turkish standards and take guidance from the following international standards: 

<img src='content_image/458827.jpg'>

## 4.2.3 Quality Assurance Procedure 

The compilation of the quality assurance procedure shall start when the Contractor submits the quality assurance plan, not later than thirty (30) days after the notice to commence the works. 

