San Diego County
Owner Reference: H2426477-M
04/25/2024
Past bid date
Pre-Bid: 04/04/2024 @ 10:00am
Estimate: Between $825,000. and $1,100,000.
Trades: *A&E Professional Services: Architecture, Engineering, Consulting & Planning
In 2008, less than ten years after being put into service, the filter gallery piping started to leak. The plant engineering staff consulted the City's corrosion team to assess the piping. The condition assessment yielded that the pipe had undergone deterioration at specific welds. Improper welding procedures and incompatibility of Type 304L stainless steel pipe with chlorine were determined to be the main factors triggering the deterioration of pipes. All segments of pipe observed are compromised and it is assumed the pipe not observed has same extent of corrosion throughout. Poor workmanship on the welds and material incompatibility along with chemical attack and microbiologically influenced corrosion led to the concerning observations and unfavorable results. Other Details Professional design services for this project shall support the replacement of approximately 2,970 LF of existing 304 stainless steel piping with cement mortar-lined carbon steel pipes with painted exterior including associated valves, appurtenances, and pipe labels at the Area 60 (Filters 9-16) Filter Gallery of the Alvarado WTP. The design scope includes the installation of removable spools with bypass which is necessary for future inspection by a third-party certified weld inspector to ensure the welding environment and procedures for quality control. The Project is located at 5540 Kiowa Drive, La Mesa, California 91942, within the Navajo Community Planning Area Bonds required. Prevailing wages.
Melissa DeOcampo
Login or create an account
Login or create an account
Owner: City of San Diego CA
Published 03/25/2024 on Construction Bid Source
DISCLAIMER: The bid notifications listed on Construction Bid Source are compiled from various sources and updated daily. It is the responsibility of each user, whether browsing publicly or logged in, to contact the project owner directly for the purpose of bidding and obtaining additional project details. Construction Bid Source does not assume any responsibility for omissions or errors in the information provided.