Attachment_1 _Amendment_00004 _SOW_DeSpecC_WI_210_270_RO_Replace_Pg5.pdf

SOLICITATION HSCG80-16-R-P45F72

Amendment 00004

5 of 20 Attachment (1)

GENERAL REQUIREMENTS FOR WORLD HEALTH ORGANIZATION (WHO)

STANDARDS FOR DRINKING WATER

Constituent Ion/Molecule Maximum Limits (ppm)

Nitrate 50 Fluorine 1.5 Chlorine 250 (per USPHS 1962) Sulfate 250 Magnesium 30

Calcium 75

Calcium Carbonate 100 Iron 0.3 Manganese 0.4 Total Dissolved Solids 500 Turbidity 5 Oil .1 Detergents (anionic) .2 Phenols .001 pH 6.5 – 8.5 Bacteria – E coli (per 100 ml) 0

3.1.1.3 Each R/O Desalination plant shall produce the required capacity of potable water when operating with an ambient compartment temperature range from 40 degrees F to 120 degrees F.

3.1.1.4 Each R/O Desalination plant shall produce the required capacity of potable water when operating with cutter motions and attitudes as follows:

Roll of 45 degrees (double amplitude) in 9.5 seconds

Pitch of 6 degrees (double amplitude) in 6 seconds

Heave of 4 feet (double amplitude) in 11 seconds

List of 15 degrees

Trim of 5 degrees down by stern or 5 degrees down by bow

3.1.2 Plant dimensions and arrangement.

3.1.2.1 Each R/O Desalination plant shall be a multiple R/O unit arrangement with built-in redundancy for continued system operation in the event of failure of one R/O unit. The new R/O plant(s) shall fit within the same general areas as the existing R/O Desalination plant onboard the vessel without major structural modification. These sizes are the approximate dimensions available for the new R/O plants, and do not include any maintenance and service clearances. The Contractor’s proposal shall clearly illustrate the required clearances.

For TYPE I – The space available for R/O Desalination plant installation is limited to the existing R/O plant area. The existing R/O Desalination plant dimensions are 64 in (fore/aft) by 56 in (athwart ship) by 48 in (high). The maximum available envelope at the location is 66 in (fore/aft) by 72 in (athwart ship) by 66 in (high). See Coast Guard drawings 618 WMEC 601-003 for A Class and 627 WMEC 601-003 for B Class, for guidance.

For TYPE II – The space available for R/O Desalination plant installation is limited to the existing R/O plant area. The existing R/O Desalination plant dimensions are 94 in (fore/aft) by 67 in (athwart ship) by 70 in (high). The maximum available envelope at this location is 120 in (fore/aft) by 80 in (athwart ship) by 80 in (high). See Coast Guard Drawing 901 WMEC 801-006 for A-Class and 905 WMEC 801-006 for B Class, for guidance.