What is CS1?
CS1 is the customer's first formal containment demand after an escape: a separate inspection of 100% of the affected parts, done by the supplier's own staff, outside the normal process, with the results reported to the customer. It's meant to stop more bad parts reaching the plant while you find the root cause.
What is CS2, and who pays?
CS2 is issued when CS1 doesn't stop the escapes, or the problem is serious enough. The same inspection is done again by an independent containment provider that the customer approves, on top of your CS1 check. The supplier pays for it, and a CS2 status is typically visible to the customer's purchasing and can affect new business. The exact rules vary by OEM, so read your customer's specific requirements.
How do you exit controlled shipping?
Customers generally want three things: a root cause, a permanent corrective action that removes it, and a defined period of clean shipments that proves the fix works. Manual sorting can satisfy the containment. It can't satisfy the corrective action, because the defect is still being made.
That's where engineering comes in. If the defect can be detected or prevented in-process, by vision inspection, a poka-yoke fixture, torque and angle verification or a part-presence check, the corrective action becomes a machine rather than a promise.
What does engineered containment look like?
Common fixes we build for escapes:
- Vision stations that judge each part or position OK/NG and log the result against the unit
- Poka-yoke fixtures that physically won't accept the wrong part or orientation
- Fastening verification, so a joint that isn't at torque and angle can't move on
- Traceability and part marking that ties every result to a serial or lot
- Temporary stations that can later be engineered into permanent line equipment
Where does PH fit?
We're not a sorting company, and we don't supply third-party CS2 inspectors. We build the inspection and error-proofing equipment that removes the reason for containment, and we scope that work in days rather than on a capital-project timeline. If you're under CS1 or CS2 now, tell us what's escaping and we'll tell you honestly what can be automated and how fast.
Common questions
What's the difference between CS1 and CS2?
CS1 is 100% inspection by the supplier's own staff. CS2 adds an independent, customer-approved containment provider doing the same inspection at the supplier's expense, and usually follows a CS1 that didn't stop the escapes.
Can vision inspection get us out of controlled shipping?
It can be the permanent corrective action, if the defect presents as a repeatable visual difference. We prove that on your real parts first, before you commit to hardware.
How fast can error-proofing be in place?
Containment work is scoped in days, not on a capital-project timeline. How fast it's running depends on the defect and what hardware is available; we'll tell you honestly once we've seen it.