Tender Details

SUPPLY AND TRAINING OF PORTABLE DISTRIBUTED ACOUSTIC SENSING MONITORING SYSTEM

Tender Number: 533/2025/BTB (2025-102-PP-ETD)

PA Ref Number: 2025-102-PP-ETD

Tender Description

The Contractor will propose a system for the continuous monitoring of cable external internal activities using Single mode fiber optic cable G.652D type with 1550 nm wavelength in Electricity Transmission System. The Purpose of Distributed Acoustic Sensing System, including software, is to quickly pinpoint the exact cable fault locating if any vibration happens and to asses any external sources of danger to the cable system such as excavation or manual digging.

Issued by
Electricity and Water Authority
Internal/External
External
Invitation Method
Public (LOCAL GCC)
Initial Bond
BD 500
Bid Validity / Initial Bond Validity Period (Days)
180 days
Tender Fees
BD 30
Contract Duration
1 Year
Is Alternate Bid Allowed
Yes
Publish Date
Sunday, 14 September 2025
Purchase Before
Wednesday, 24 September 2025
Closing Date
Sunday, 05 October 2025
Opening Date
Monday, 06 October 2025

Additional Notes

The Contractor will propose a system for the continuous monitoring of cable external / internal activities using Single mode fiber optic cable G.652D type with 1550 nm wavelength in Electricity Transmission System. The Purpose of Distributed Acoustic Sensing System, including software, is to quickly pinpoint the exact cable fault locating if any vibration happens and to asses any external sources of danger to the cable system such as excavation or manual digging.

 The tender shall cover the design, manufacture, testing, supply, delivery, site training of portable Distributed Acoustic System. The required DAS system offered shall be designed such as to follow FO cable service life of not less than 40 years, observing cable internal activities such as acoustic signal generated from thumping voltage for pinpointing and external activities such as un authorized excavation. 

The DAS system should measure the acoustic vibrations on the fiber based on the principles of Coherent Optical Time Domain Reflectometry (C-OTDR).The instrument should send highly coherent laser pulses into the fiber, and the backscattered Rayleigh light should be detected and analyzed by the instrument. 

It shall also fully satisfy the safety, health and environmental requirements enforced by the laws established in Bahrain and EWA requirements.
,
سوف يقترح المقاول نظاماً للمراقبة المستمرة لنشاطات الكابالت باستخدام كابل الألياف الضوئية أحادي النمط وذلك وفقا للتصميم المرفق في المواصفات.

تم تصميم الألياف لتعمل بطول موجي يبلغ 1550 نانومتر. الغرض من نظام الاستشعار الصوتي الموزع، بما في ذلك البرامج، هو تحديد موقع خطأ الكابل بدقة في حالة حدوث أي اهتزاز وتقييم أي مصادر خارجية للخطر على نظام الكابل مثل الحفر.

 يجب أن يغطي العطاء التصميم والتصنيع واالختبار والتوريد والتسليم والتدريب في الموقع للنظام الصوتي الموزع المحمول.

يجب أن يتم تصميم النظام المطلوب المعروض بحيث يتبع عمر خدمة كابل الضوئي الذي لا يقل عن 40 عا ًما، مع مراقبة الأنشطة الداخلية للكابل مثلا الإشارة الصوتية المتولدة من الجهد الكهربي لتحديد اموقع الخطأ في الكابل الكهربائي والأنشطة الخارجية مثل الحفر غير المصرح به.

يجب أن يقوم النظام بقياس االهتزازات الصوتية على الألياف بنا ًء على مبادئ قياس انعكاسات المجال الزمني البصري المتماسك. يجب أن يرسل الجهاز نبضات ليزر عالية التماسك إلى األلياف، ويجب اكتشاف ضوء رايلي المتناثر وتحليله بواسطة الجهاز.

كما يجب أن تستوفي بشكل كامل متطلبات السلامة والصحة والبيئة التي تفرضها القوانين المعمول بها في البحرين  ومتطلبات هيئة الكهرباء والماء 

يجب أن تكون المواد المعروضة مؤهلة مسبقاً زمعتمدة ومثبتة مسبقاً في شبكة دول مجلس التعاون الخليجي ويجب أن تحتوي على تقرير اختبار نوع صالح ذي صلة بهذه المواصفات
,MANDATORY REQUIREMENT 

The eligibility to participate in this tender is restricted to the following conditions and offers not meeting the following will be disqualified: 

1. The supplier is required to provide valid type test report and certificate as per the relevant international standard demonstrating compatibility of the Distributed Acoustic Sensing Monitoring system with G.652D fiber optic cable OR willing to conduct Type test.

2. The supplier has to provide report such as case study or incident report for demonstrating global successful deployment of the DAS system in HV cable fault location and monitoring application

How to Participate?

  • Those who are capable and wish to participate in the above tender have to purchase the Tender Documents online through the Bahrain Tender Board’s portal https://etendering.tenderboard.gov.bh starting from Sunday, 14 September 2025
  • Bidders are requested to enclose with their bids the Initial Bond for the amount specified above or at the rate of 1% of the tender value whichever amount is lesser, provided that no initial bonds value shall be less than BD 100/-. (Except for the Two-envelope tenders).
  • For Two-envelope tenders, bidders, are requested to enclose with their bids the Initial Bond for the amount specified above.
  • The initial bond should be in the form of a Certified Cheque, Bank Guarantee, Insurance Policy or Cash (or as specified in the Tender Documents) valid for the duration specified above.
  • The bids deposit place: (As Mentioned in the Tender Documents)
  • This tender is subject to the provisions of the Tender Law issued by the Legislative Decree No. 36 of 2002, its amendments, and its Implementing Regulations issued by the Decree No. 37 of 2002.
  • In addition, these conditions have to be considered:
    • Enclose copy of a valid Commercial Registration Certificate (CR) in line with the tender's subject.
    • Enclose copy of a valid certificate of compliance with the employment percentages for Bahraini manpower (Bahranization Certificate) issued by the Ministry of Labour.
  • This advertisement is considered supplementary to the tender documents. In case of any discrepancy between the Advertisement and the Tender Document, the Tender Document prevails.
  • Small and Medium Enterprises are eligible to obtain 10% preference in the financial evaluation stage, when submitting the "SMEs Classification Certificate" during bidding for this tender. The certificate is awarded by Ministry of Industry Commerce and Tourism to the SMEs and can be obtained when applying on the SMEs Registration System which can be reached via the following link: https://www.moic.gov.bh/en/eServices/sme
  • Vendors who are not registered in the Tender Board's e-tendering system shall be required to register through the below-mentioned link, and for assistance please contact the Tender Board through email helpdesk@tenderboard.gov.bh or call on Tel No. +97317566617.
  • For Registration

Inquiries

For further inquiries please contact on:

Electricity and Water Authority
  17995555