30.2. The project manager shall, during the progress of the delivery of the supplies and before  the supplies are taken over, have the power to order or decide:  a) the removal from the place of acceptance, within such time or times as may be  specified in the order, of any supplies which, in the opinion of the project manager,  are not in accordance with the contract;  b) their replacement with proper and suitable supplies;  c) the removal and proper re-installation, notwithstanding any previous test thereof or  of any installation which in respect of materials, workmanship or design for which  the contractor is responsible, is not, in the opinion of the project manager, in  accordance with the contract;  d) that any work done or goods supplied or materials used by the contractor is or are  not in accordance with the contract, or that the supplies or any portion thereof do not  fulfil the requirements of the contract.  30.3. The contractor shall, with all speed and at its own expense, make good the defects so  specified. If the contractor does not comply with such order, the contracting authority  shall be entitled to employ other persons to carry out the orders and all expenses  consequent thereon or incidental thereto shall be deducted by the contracting authority  from any monies due or which may become due to the contractor.  30.4. Supplies which are not of the required quality shall be rejected. A special mark may be  applied to the rejected supplies. This shall not be such as to alter them or affect their  commercial value. Rejected supplies shall be removed by the contractor from the place of  acceptance, if the project manager so requires, within a period which the project manager  shall specify, failing which they shall be removed as of right at the expense and risk of  the contractor. Any works incorporating rejected materials shall be rejected.  30.5. The provisions of Article 30 shall not affect the right of the contracting authority to claim  under Article 21, nor shall it in any way release the contractor from any warranty or other  obligations under the contract.  31.1. The supplies shall be taken over by the contracting authority when they have been  delivered in accordance with the contract, have satisfactorily passed the required tests, or  have been commissioned as the case may be, and a certificate of provisional acceptance  has been issued or is deemed to have been issued.  31.2. The contractor may apply, by notice to the project manager, for a certificate of  provisional acceptance when supplies are ready for provisional acceptance. The project  manager shall within 30 days of receipt of the contractor's application either:   issue the certificate of provisional acceptance to the contractor with a copy to the  contracting authority stating, where appropriate, his reservations, and, inter alia, the  date on which, in his opinion, the supplies were completed in accordance with the  contract and ready for provisional acceptance; or   reject the application, giving his reasons and specifying the action which, in his  opinion, is required of the contractor for the certificate to be issued.  Article 31 -  Provisional acceptance  The contracting authority’s time limit for issuing the certificate of provisional acceptance  to the contractor shall be considered included in the time limit for payments indicated in  Article 26.3, unless otherwise specified in the special conditions. August 2020 c4e_annexigc_en  Page 25 of 36 