J28 SOW - Reverse Osmosis System Membrane Replacement and Cleaning Service.pdf

Statement of Work for

Reverse Osmosis (RO) System Membrane Replacement and Cleaning Service

1. PROJECT SUMMARY DESCRIPTION

The objective of this contract is to provide Reverse Osmosis (RO) system membrane replacement and cleaning service. The Central Heating & Refrigeration Plant (CHRP) has two (2) ROs, which clean the used equipment cooling water into clean boiler make-up water by using the reverse osmosis process. The used water, which is from various bearing cooler, heat exchangers, and blowdowns, is collected and reprocessed thru the ROs.

2. SCOPE OF WORK

The Contractor shall perform all services described in this Scope of Services in accordance with applicable requirements and provisions set forth in this Statement of Work.

RO Membrane Replacement and Cleaning Service:

• Contractor shall clean the membranes four (4) times per year for each of the two RO systems. Each system has 36 membranes housed in it for a total of 72 membranes for the two systems.

• The contractor shall provide labor to remove dirty/fouled membranes from the system(s) and replace with the same number of cleaned membranes when called by CHRP project manager. This service shall be completed with 24 hours of service call.

• Contractor shall pick up the dirty membrane and transport to off-site contractor’s facility for cleaning. It shall be the responsibility of the contractor to safely remove the membranes from the

RO system(s) without affecting the daily activity of other plant personnel working in proximity.

This membrane exchange shall be performed four (4) times a year for each RO system.

• The offsite membrane shall include the following steps

a) Individual pre-testing of all membranes includes visual inspection, salt rejection % and flow testing.

b) High and Low pH cleaning on all membranes.

c) Individual post-testing of all membranes includes visual inspection, salt rejection % and flow testing.

d) Treat cleaned membranes with Sodium Bisulfite before transporting to the CHRP.

e) Report generation to document performance of each membrane.

f) Complete data spreadsheet provided,

• Contractor shall provide temporary set of RO membranes while the fouled ones are being cleaned, only if there is a shortage of cleaned membranes on-site facility at the time of replacement.

• Contractor shall help start up the RO system with CHRP PM after membrane replacement is completed and shall make sure that all the replaced membranes are firmly secured in the pressure vessels and no leaks or dramatic pressure drops are observed across stages between the pressure vessels.

• It shall be the contractor’s responsibility to confirm the effectiveness of the off-site cleaning by testing, cleaning, and testing membranes again before delivering them to the CHRP facility.

• If required, contractor shall keep the membranes in membrane plastic bags and deliver to the CHRP facility for future use after cleaning and treating with Sodium Bisulfite.