USNS EARL WARREN A0002

N6264927RL005 USNS EARL WARREN (T-AO 207)

FY27 ROH SSU SN 27-010 A0002

TITLE: Deckhouse Preservation (10YR)

1. QUESTION:

Kindly advise if we can allow to carry-out WJ-2 in lieu of abrasive blasting SSPC-SP10 for the surface preparation of the deckhouse vertical areas.
Due to environmental and regulatory constraints for onboard quay execution in Singapore, dry abrasive blasting is restricted. As such, we have proposed: - SSPC-SP WJ-2 (Waterjet Cleaning) as an alternative surface preparation method. - This method is widely accepted and capable of achieving equivalent cleanliness and coating performance where permitted.
We are seeking formal approval/deviation from MSC to use SSPC-SP WJ-2 (Waterjet Cleaning) as an alternative surface preparation method.
1a ANSWER: SSPC-SP WJ-2 is not acceptable; Slurry blast WJ-1 is acceptable alternative.
TITLE: High Profile Non-Skid Weatherdeck Preservation (20PCT) (1YR)

2. QUESTION:

1) Please confirm if below are correct quantities to be considered in the quote: -HP washing – 18,300ft2
-Blasting – 12,850ft2
-Painting (epoxy) (blasted areas) – 12,850ft2 x 2 coats -Painting (non-skid) (full area?) – 18,300ft2 x 1 coat
-Number of tiedown sockets – 100 nos or 300 nos?
2) Please advise if hydroblasting or WJ-2 is acceptable for the blasting method/surface preparation.
Due to environmental and regulatory constraints for onboard quay execution in Singapore, dry abrasive blasting is restricted. As such, we have proposed: - SSPC-SP WJ-2 (Waterjet Cleaning) as an alternative surface preparation method.

- This method is widely accepted and capable of achieving equivalent cleanliness and coating performance where permitted.
We are seeking formal approval/deviation from MSC to use SSPC-SP WJ-2 (Waterjet Cleaning) as an alternative surface preparation method. 2a ANSWER: SSPC-SP WJ-2 is not acceptable, Slurry blast WJ-1 is acceptable alternative.