N4523A18R1052_RFC-005.pdf

REQUEST FOR CLARIFICATION

Attachment J-3

DATE OF REQUEST: 7/18/18 QUESTION NO: 005

REQUIREMENT: YD-248 Floating Crane

REQUISITION NO.: N4523A18R1052

ITEM NO: 3.2.5

TITLE: Hull Blasting and Preservation

PSNS&IMF CONTRACTS POC & PHONE:

See POCs listed on RFP.

PARA. NO: 3.2.5.1 PAGE NO: 32 CONTRACTOR:

PLANNER’S NAME: ATTACH. NO: CONTRACTOR POC & PHONE:

CONTRACTOR QUESTION: (ONE QUESTION PER PAGE)

Will the Government alternately accept the Surface Preparation Specification SSPC-TR-2/NACE 6G198 and Visual Standards SSPC VIS 5/ NACE VIS 9, C-WAB-10M or D-WAB-10M as acceptable, with a surface profile of 2-4 Mils, with no single reading less than One Mil or greater than 5 Mils?

DO NOT WRITE BELOW THIS LINE

SPEC CHG: N DWG/REF CHG. N RQMTS CHG: N MAT'L CHG: N

TECHNICAL REVIEW: Carney SERIAL NO: 005

The use of Wet Abrasive Blasting (WAB) per SSPC-TR-2/NACE 6G198 is technically acceptable when completed to cleanliness standards as specified in SSPC SP-10/NACE 2, as this will provide the specified "near white metal" cleanliness and the required 2-4 mil profile. However, steel that is wet abrasive blasted may flash rust quickly and, since the final coating system is not known, the addition of inhibitors cannot be approved at this time.

The use of SSPC VIS 5/NACE VIS 9 reference photographs (C WAB-10, D WAB-10) may be used to assist with meeting the requirements of SSPC SP-10/NACE 2, however they shall not be used as a substitute for the written standard.

ALL RFCs MUST BE RECEIVED NO LATER THAN 2:00 P.M. (PST), 25 July 2018.