Reverse auction processes shall not be used for—

1. (a) Design-build construction contracts (see 36.104);

2. (b) Procurements for architect-engineer services subject to 40 U.S.C. chapter 11 (see 36.601);

3. (c) Procurements using sealed bidding procedures (see part 14); or

4. (d) Acquisition of personal protective equipment, in accordance with—

   1. (1) Sections 813 and 814 of the National Defense Authorization Act (NDAA) for Fiscal Year (FY) 2017 (Pub. L. 114-328);

   2. (2) Section 882 of the NDAA for FY 2018 (Pub. L. 115-91); and

   3. (3) Section 880 of the John S. McCain NDAA for FY 2019 (Pub. L. 115-232, 41 U.S.C. 3701 note).