21R1300_Notice11-Issued.pdf
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- Attached to
- FY20 MCAF PAF180200 APR - JET FUEL STORAGE TANKS, ROYAL AUSTRALIAN AIR FORCE BASE TINDAL, AUSTRALIA
- Solicitation number
- N6274221R1300
About this file
This document contains questions and answers regarding solicitation number N6274221R1300 for construction of two four million barrel cut'n'cover bulk fuel tanks, support infrastructure including two pump houses and a filter building, and all required utilities and site work at Royal Australian Air Force Base Tindal in Australia. Key details include allowing ultrasonic weld examination in place of radiography, accepting accreditation by the National Association of Testing Authorities of Australia in lieu of ASTM E329 for testing agencies, revising surge protector requirements in section 28 31 63.00 20 to allow for Australian models, and not permitting a change from precast panels to blockwork in filter building and pump vault structures as specified.
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DEPARTMENT OF THE NAVY
NAVAL FACILITIES ENGINEERING SYSTEMS COMMAND, PACIFIC
258 MAKALAPA DR., STE. 100
JBPHH, HI 96860-3134
RFP N62742-21-R-1300
Notice No. 11
24 February 2021
PRE-PROPOSAL QUESTIONS & ANSWERS
RFP N62742-21-R-1300
WON 1606003, FY20 MCAF PROJECT
PAF180200 APR JET FUEL STORAGE TANKS,
ROYAL AUSTRALIAN AIR FORCE (RAAF) BASE TINDAL,
AUSTRALIA
NOTE: The following questions and answers are provided for INFORMATION ONLY. The RFP remains unchanged unless it is amended in writing on a Standard Form 30.
RESPONSES DEFERRED FROM NOTICE NO. 10 DATED FEBRUARY 18, 2021:
102. Section 33 56 21.17, SINGLE WALL ABOVEGROUND FIXED ROOF STEEL POL
STORAGE TANK, Paragraph 3.5.2 requires inspection of butt welds with complete penetration and complete fusion by the radiographic method. Alternatively, using Time-of- Flight Diffraction (TOFD) or Phased Array Ultrasonic Testing (PAUT) instead of radiograph method will reduce the project schedule. Please advise if TOFD or PAUT is acceptable in place of the radiograph method.
ANSWER: Ultrasonic weld examination will be allowed. See Amendment No. 0008.
103. Section 33 56 21.17, SINGLE WALL ABOVEGROUND FIXED ROOF STEEL POL
STORAGE TANK, Paragraph 1.8.6.2 requires that the testing agency, testing laboratory, technical consultant, or contractor's approved quality assurance organization must meet the requirements of ASTM E329. In Australia, The National Association of Testing Authorities (NATA) is Australia’s national accreditation body for the accreditation of laboratories, inspection bodies, calibration services, producers of certified reference materials, and proficiency testing scheme providers throughout Australia. Is it acceptable as an alternative for the Government to confirm testing agency, testing laboratory, technical consultant, or contractor's approved quality assurance organization to allow the credentials of NATA in lieu of ASTM E329?
ANSWER: NATA accreditation is acceptable. See Amendment No. 0008.
RFP N62742-21-R-1300
104. Regarding Section 28 31 63.00 20, an Australian electrical subcontractor has advised that local surge protectors are different than specified, but expected to work with their equipment and intent of the contract. However, they do not align with the specification. We exceed the current requirements but do not meet the voltage Vp specified. We understand this is a minor change and can wait to submit a variance post award. For bidding purposes are the recommended surge arrestors acceptable?
Specification requirement:
10/1000uS they want Vp1500V Ipk 60A and 8/20uS they want Vp 1000V Ipk 500A.
AUS Recommended Surge Protectors At 8/20uS :
UTB30SP can do Vp 40V Ipk 20KA; UTB110SP can do Vp 220V Ipk 20KA; DSD120-15- 24 can do Vp 30V Ipk 20KA
ANSWER: Australian surge protectors as indicated in Question 104 are not acceptable.
However, the requirements indicated in Paragraph 2.1.3 have been revised. See Amendment No. 0008.
105. Section 28 31 63.00 20, ANALOG/ADDRESSABLE INTERIOR FIRE ALARM
SYSTEM, Paragraph 2.1.3.a states that the cables "shall have surge protection circuits installed at each end." This is not typical, which would double the number of surge protectors. Please confirm whether surge arrestors are required at each end of each circuit.
ANSWER: Confirmed.
106. Section 28 31 63.00 20, ANALOG/ADDRESSABLE INTERIOR FIRE ALARM, Paragraph 2.1.3.b requests "Additional triple electrode gas surge protectors...". An Australian electrical subcontractor has advised they cannot source this product. Will a recommended manufacturer be provided for the contractors to contact? Or, is an alternate specification available that can be considered as an equal to this requirement? If an alternate is acceptable, please provide the revised requirement for the contractors to use as a basis of bid.
ANSWER: Section 28 31 63.00 20 Paragraph 2.1.3 has been revised to delete the requirement for triple electrode gas surge protectors. However, surge protectors are still required. See Amendment No. 0008.
107. Detail B5 on Drawing A-511 shows the use of Precast 150mm Panels. These panels are located at both the Filter Building and the Pump Vault structures. On a previous project we used blockwork in these locations. The preliminary pricing we are receiving has the cost for the precast panels substantially higher (approximately four times the cost) than conventional blockwork. Please consider the allowance to use blockwork at these locations.
ANSWER: Comply with RFP requirements.
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