This Recommended Practice (RP), IEST-RP-CC026.3,  provides guidance for maintaining the integrity of the cleanroom during ancillary operations.

Ancillary operations include:
a) Preparation of supplies and materials
b) Modification of the facility
c) Installation and repair of equipment

Procedures are given for verifying the cleanliness of the equipment, the workstation, and the area, following these ancillary operations.

First printing, May 2020 (Supersedes previous versions, including IEST-RP-CC026.1 and IEST-RP-CC026.2.)

Cleanroom Operations
was prepared by Working Group 026 of the IEST Contamination Control Division (WG-CC026).