Clean-in-Place (CIP) & SIP Systems

A clean-in-place (CIP) system automatically cleans the interior of process piping, tanks, and equipment without disassembly — essential for cGMP pharmaceutical, biotech, cosmetic, and food & beverage production. Paul Industries designs, fabricates, installs, and validates turnkey CIP and SIP (sterilize-in-place) systems for manufacturing facilities across the US East Coast, with more than 30 years of cGMP/FDA-compliant experience.

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How a CIP system works

A clean-in-place system circulates cleaning solutions — typically a sequence of water rinses, caustic wash, acid wash, and a final rinse — through fixed process piping, tanks, fillers, and heat exchangers using dedicated CIP pumps, spray devices, and a controlled recipe. Because the equipment is cleaned in place, there is no need to break down piping or manually scrub vessels, which removes operator variability and produces a repeatable, documentable clean every cycle.

A typical CIP skid integrates supply and return pumps, heat exchangers for temperature control, conductivity and flow instrumentation, chemical dosing, and a PLC that runs validated cleaning recipes. Sterilize-in-place (SIP) extends the same principle to sterilization: after cleaning, pressurized clean steam is circulated to sterilize the interior surfaces of bioreactors, WFI loops, and filling systems. Paul Industries builds both as integrated, automated systems tied into your existing utilities and controls.

CIP vs SIP vs COP

These three cleaning methods are often confused but serve different roles. Most cGMP facilities use a combination: CIP for fixed equipment, SIP where sterility is required, and COP for removable parts that cannot be cleaned in place.

Our CIP, SIP & COP services

Paul Industries delivers CIP and SIP as a single-source scope so one team is accountable from concept to a validated, running system:

• Design & engineering — CIP circuit design, spray-device coverage, slope and drainability, chemical and utility sizing.
• Skid fabrication — prefabricated CIP/SIP skids built to ASME BPE with orbital-welded, documented sanitary piping.
• Installation — field piping, tie-ins to existing tanks and loops, utilities, and drains, self-performed by our mechanical crews.
• Automation & controls — PLC/HMI recipe control, conductivity and temperature verification, data logging for cGMP records.
• Validation — IQ/OQ/PQ, riboflavin coverage testing, and cleaning validation support.
• Maintenance — preventive-maintenance and 24/7 service contracts to keep cleaning cycles in a validated state.

Industries we serve

We install CIP and SIP systems for pharmaceutical and biotech drug manufacturing (including WFI and bioreactor suites), cosmetic and personal-care blending and filling lines, nutraceutical production, and food & beverage plants where 3-A sanitary standards and allergen control apply. Each industry has different chemistry, temperature, and documentation needs, and we tailor the recipe design and materials accordingly.

Standards & compliance

Why Paul Industries

Because we self-perform design, sanitary-piping fabrication, installation, and validation, a Paul Industries CIP/SIP project has a single point of accountability — no gaps between the engineer who designs the circuit, the welder who builds it, and the team that validates it. Our crews have delivered process-equipment and high-purity systems on the US East Coast for more than three decades, and every weld and cycle is documented for cGMP traceability. Where public project references are limited by client confidentiality, we provide capability statements, weld and material documentation, and validation deliverables on request.