Run @ Rate 是在PPAP之前还是PPAP之后

最近内部团队都在对Run @ Rate 是在PPAP之前还是PPAP之后而争执不休
 
我在网上找到通用的教材，说明了GP-9（即Run & Rate）是在PPAP批准后（不管是临时还是正式，反正要批准）

• PPAP正式批准或临时批准后（若为“不可销售”状态，需SGM SQE协商）

• GM SORP前8周进行

但必须在SGM SOP以前完成GP-9的运行

具体时间应由SQE和供应商提前共同确定，可考虑下列因素：

➢ 设计/过程稳定性

➢ 分总成的复杂程度

 
但是很多其他同事说，PPAP会给供应商下300件的PPAP订单，这300件也就是为了Run at Rate的，只有Run at Rate证明他们的持续地符合或超越“一个生产日的合同产能“才能批准PPAP。
我和美国总部的一个负责定流程的人也争执起来，所以求GM的SQE能否给予官方解释，最好能有英文的文件说明，这样我可以继续拿着这个说服美国总部的同事修改流程（目前的流程是Run at Rate报告出来，才能批准供应商的PPAP，对这个我是不认可的）
 
摘抄了官方定义：

PPAP 的目的仍然是用来确定组织是否已经正确的理解了顾客工程设计记录和规

范的所有要求，以及该制造过程是否有潜力在实际运行中，依报价时的生产节拍，

持续生产满足顾客要求的产品。

对于生产件，用于PPAP 的产品，必须取自有效的生产（Significant Production

Run）。该生产过程必须是1 小时到8 小时的量产，且规定的生产数量至少为300

件连续生产的零件，除非有经授权的顾客代表的另行规定。



Run at Rate是为了验证供应商对于该零件的实际生产/排序能力在正常的生产条件以及满足所有客户需求(质量!产能!)的情况下,是否能够

A.生产/排序符合PPAP状态的合格零件/系统/模块(参照表B-控制计划审核)

B.持续地符合或超越“一个生产日的合同产能”(参照产能分析表-C-1/C-2/C-3)

C.满足SGM当前的LCR和MCR(当每日合同产能小于LCR和MCR时)

以上摘自PPAP手册和GM GP-9流程，为官方定义，看起来两者是有重叠的，但仔细看GP-9流程，Run at Rate偏重于对PPAP状态的复核和对“一个生产日的合同产能”的复核，这个和PPAP提到的300件的应该是两个过程，我的理解一个是验证质量，一个是验证产能，两者不能合并。
多谢各位的热心帮忙，现在已经给通用的官方邮件发邮件过去了，并得到确认可能会在5个工作日回复我，所以请各位静候佳音。
另外在论坛上一个老帖子里也看到了同样的问题，供大家参考：
Run@rate什么时候开展
http://www.6sq.net/question/187856
 
谢谢楼下一位朋友，最终联系到了通用负责的 GM SQ Run-at-Rate / Capacity Planning Supervisor，得到了官方答案
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Jacd,
  Please see my response in “Blue Highlight”.

Base my understand and my personal comments for above points:
1)       If supplier should perform Run-at-Rate, it should be decided by SQE. 

Response: Correct.  We conduct Run-at-Rates with ‘critical” suppliers.  We normally will not test raw material, small fasteners (screws, nuts, etc.) where these suppliers provide “off the shelf” items.  We may ask for a confirmation letter from those suppliers only.

-          For some critical parts, SQE must ask supplier provide Run-at-Rate reports even after full PPAP released.

Response: Correct.  Run-at-Rate is a manufacturing system capacity/capability verification to our Contracted Capacity (SDC – Supplier Daily Capacity).  Can the suppliers’ manufacturing systems support our Contracted Capacity every day, especially on shared resources.

-          Purchasing guys can’t release any order except we got Run-at-Rate result from supplier.

Response: Not Correct.  We have some suppliers that cannot “PASS” Run-at-Rate.  Even those suppliers must provide parts (even if running 24 hrs./ 7 days per week with expedites) in order to meet / support our Plant requirements.  This means that Purchasing / Supply Chain must release Parts’ schedules / releases to the suppliers.

-          Also, Run-at-Rate report can’t be combine into PPAP documents. 

Response: Correct.  One may be a 300 pcs. run vs. a Contracted capacity of 1000’s pieces/day on contract.  It may not correlate correctly on that limited run.

2)       Even if customer don’t need Run-at –Rate report, we still have run a 1000pcs more pilot run to verify if we have any other potential problem, then we could transfer the project to production team and close Phase 4 of APQP.

Response: Sounds reasonable.

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Jacd,
  Thank you very much for your questions.  Yes, GM would like to make sure the PPAP level is at “Full” and “Saleable”.  In that way we ensure that the parts are able to be “released to commerce” to the ultimate customer.  At the time of the PPAP run the parts’ quality are still not confirmed until after testing.  In that way, the PPAP run is separate from the Run-at-Rate run and should not be mixed.
  You can use that PPAP run as a “practice” Run-at-Rate and/or Burst Build testing the manufacturing system.  As the procedure states
“The use of practice run at rates or burst builds should be utilized to the maximum extent possible during the pre-production build events including PPAP runs in order to validate the capability of the manufacturing system and/or to develop countermeasures as may be required to meet the SDC.” 
  This means that the data can be used to support the ultimate manufacturing system capability.  Throughout the GVDP each GM Part build (PPAP, MVB-ns and MVB-s, etc.) is an opportunity to test your manufacturing system with “Production at Rate” Build.  Each one of these tests demonstrate your system capability.  If documented, then the Run-at-Rate should be simple.
   Hope this helps.  If you have any other Run-at-Rate questions, please contact me at your convenience.