Amendment0002-QandA.pdf
PDF 710 KB Posted
- Attached to
- DCV Driftmaster drydocking and repairs Federal contract opportunity
- Solicitation number
- W912DS25R0004
About this file
This document contains a question-and-answer (Q&A) amendment related to a federal contract opportunity for the drydocking and repair of the U.S. Army Corps of Engineers Drift Collection Vessel "DRIFTMASTER".
Key details:
- The contractor is responsible for ABS inspection costs and any associated testing required by ABS.
- Pipe connections are to be threaded, not welded.
- A breakdown of the project's piping requirements is provided, including lengths, fittings, and valves.
- Schedule 80 black seamless pipe meeting ASTM A106 is acceptable.
- The deckhouse structure is not to be blasted.
- The new hatch plate dimensions are provided as 5'1"x4'1".
- A marine chemist is required to gas-free all eight compartments for entry and hot work, though the number of visits is flexible.
This Q&A amendment provides clarification on various technical and logistical aspects of the contract requirements.
View the file
Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| Reference Drawings.pdf | ||
| 347-E170-01.pdf | ||
| W912DS25R0004.pdf |
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Text version
Amendment 0002 Q&A
These questions may have been paraphrased or altered to represent several questions regarding the same subject and/or simply revised to clarify and simplify the question(s).
Questions and answers are issued to the Offerors “for information only” and do not revise the solicitation, plans or specifications.
Q1: For Statement of Work SW-1 (C) please confirm that contractor is responsible for ABS Survey inspection costs as billed out by ABS and that contractor is also responsible for costs associated with any items that ABS may require, i.e., air testing, hose or air box test testing, etc.
A1: Contractor is responsible for ABS Inspection costs
Q2: TP 2.10 - For pipe and fittings , are they to be threaded or welded connections.
A2: Threaded Connections
Q3: From Drawing # 15500-M-5 (22-M5), compressed air system, it appears that pipe run between compressor and starting air tank is approximately (23’) of .75” and (6’) of 1.5” pipe totaling ~ 29’. Where is the remaining (11’) per engine room going and is it .75” or 1.5 ‘ pipe.
A3:
Total Pipe for TP:
½” pipe – 90 FT ¾”pipe- 63 Feet 1-1/2”- 41 Feet
Fi ngs:
½” ¾” 1-1/2” 90 Elbows 17 14 10 45 Elbows 11 15 7 Tee 4 8 4 Unions 7 0 7 90 Street Elbow 4 0 0 Globe Valve 7 11 0 Ball Valve 0 0 4
Air Dryer and Compressor ½” 316 stainless steel piping 10 feet ½” 90 elbow 6 each ½” 45 elbow 8 each ½” Stainless steel ball valves 150# ¾” spring check Valve 3 each (for Air Compressor)
Q4: Is schedule 80 black seamless pipe acceptable ?
A4: Schedule 80 Black Seamless Pipe is acceptable, as long as it is also meets ASTM A106 “seamless carbon steel for high-temperature service.” And all fittings meet ASTM A105 “seamless forged carbon steel piping components for use in pressure systems at ambient and high-temperature service.”
Q5: TP 1.04 (b)(6) - Please confirm that deckhouse structure is not to be blasted.
A5: Deckhouse structure is not to be blasted
Q6: TP 1.08 - Please provide dimensions of GFE hatch.
A6: The new hatch was fi ed in to a plate and is ready to be installed. The old hatch and plate is to be cropped out and new hatch with plate to be fi ed into the deck. Plate is 5’1”x4’1”
Q7: TP 1.02 – Please confirm Marine Chemist attends vessel at least (2) times, 1x safe for entry or workers and again for areas burning / welding is going to take place.
A7: The Intent is to have all eight (8) compartments gas-freed for entry and for hot work. It is up to the Marine Chemist and the Contractor if that will take multiple trips.
File details come from the government source that posted it. Updated .