Amendment 3: CMSFS Lighting Inverters

Amendment 3: The purpose of this amendment is to clarify the scope of work regarding the lighting inverter units' repair and troubleshooting. In addition to all other work decribed in the PWS, all quotes submitted should reflect the repair and troubleshooting for three (3) inverter units IAW the PWS and Amendment 2.

Amendment 2: The purpose of this amendment is to update the attached Combo (Amendment 2 - Combo Lighting Inverters) and PWS (PWS_Lighting Inverters Rev 1 - 25 Apr 25). Please see tracked changes on both documents as it reflects a change in the evaluation criteria within the Combo and an update to the scope of work within the PWS.

Amendment 1: The purpose of this amendment is to update the attached PWS.

Cheyenne Mountain Space Force Station has a requirement to repair two of seven of the Harsh Environment Uninterruptible Power Supply (HEU) Lighting Inverters. Replace eight batteries in all seven HEUs. All seven HEUs are to be reprogrammed to operate in normal mode during normal operation, and in emergency mode upon loss of power.

The work to be performed shall consist of furnishing necessary labor, tools, transportation, supplies, equipment, materials, and incidentals necessary to complete all work stated in this Performance Work Statement (PWS). The Contractor shall follow all current, applicable codes, regulations, standards, and criteria. In addition, all work procedures and materials shall be approved by the 21 Civil Engineering Squadron (21 CES) Requirements and Optimization (R&O) prior to the start of work. The work in this PWS shall be executed by licensed electricians. In addition to holding the required electrician certification, the Contractor shall possess practical knowledge and experience working on uninterruptible power supply (UPS) systems, specifically those manufactured by Crucial Power Products. The Contractor shall coordinate and perform all operations in a manner that will result in a professionally and expeditiously completed project.