Private-equity firm Charterhouse Capital Partners is acquiring U.S.-based radiation detection and monitoring products and services provider Mirion Technologies Inc. and refinancing the company's existing debt. We are affirming our 'B' corporate credit rating on Mirion. We are also assigning our 'B' issue rating and '3' recovery rating to the proposed $315 million first-lien credit facility co-issued by parent borrower Mirion Technologies (Finance) LLC and a 'B-' issue rating and a '5' recovery rating to the proposed $65 million second-lien term loan. The stable outlook reflects our expectation that modest revenue growth and stable EBITDA margins should lead to positive trends in operating performance and slowly improve credit measures. On Jan. 8, 2015, Standard&Poor's Ratings Services affirmed its 'B'
