48 C.F.R. § 2011.104-70 – NRC Clauses.

(a) The contracting officer shall insert the clause at 2052.211-70 Preparation of Technical Reports, when deliverables include a technical report.
(b) The contracting officer shall insert the clause at 2052.211-71 Technical Progress Report, in all solicitations and contracts except—
1. (1) Firm fixed price; or
2. (2) Indefinite-delivery contracts to be awarded on a time-and-materials or labor-hour basis, or that provide for issuing delivery orders for specific products/services (line items).
(c) The contracting officer shall insert the clause at 2052.211-72 Financial Status Report, in applicable cost reimbursement solicitations and contracts when detailed assessment of costs is warranted and a Contractor Spending Plan is required. The contracting officer shall use the clause at 2052.211-72 Financial Status Report—Alternate 1 when no Contractor Spending Plan is required.
(d) The contracting officer may alter clauses at 2052.211-70, 2052.211-71, 2052.211-72, and 2052.211-72, Alternate 1 before issuing the solicitation or during competition by solicitation amendment. Reporting requirements should be set at a meaningful and productive frequency. Insignificant changes may also be made by the contracting officer on a case-by-case basis during negotiations without solicitation amendment.