Clarification on TS 16949 Clause 8.2.3.1 - "... availability..."

[srcskrishnan]

Good Morning,

I am new to posting. Meaning that I am posting first time.

I hv a clarification in one of the TS 16949 clause

In Clause 8.2.3.1..........."These documents shall include objectives for manufacturing capability, reliability, maintainability and availability, as well as acceptance criteria".

Here I would like to know what does "availability" means.

Sankrish

 

[tbsiva]

Re: Clarification on TS 16949 clause 8.2.3.1 - "......... availability..."

As I understand, Availability means machine up time. Availability = Available Time / Scheduled Time.
Example:
A given Work Center is scheduled to run for an 8 hour (480 minute) shift.
The normal shift includes a scheduled 30 minute break when the Work Center is expected to be down.
The Work Center experiences 60 minutes of unscheduled downtime.
Scheduled Time = 480 min - 30 min break = 450 Min
Available Time = 450 min Scheduled - 60 min Unscheduled Downtime = 390 Min
Availability = 390 Avail Min / 450 Scheduled Min = 90%

By overall, u should have action plan to reduce break down hours

 

[srcskrishnan]

Re: Clarification on TS 16949 clause 8.2.3.1 - "......... availability..."

As I understand, Availability means machine up time. Availability = Available Time / Scheduled Time.
Example:
A given Work Center is scheduled to run for an 8 hour (480 minute) shift.
The normal shift includes a scheduled 30 minute break when the Work Center is expected to be down.
The Work Center experiences 60 minutes of unscheduled downtime.
Scheduled Time = 480 min - 30 min break = 450 Min
Available Time = 450 min Scheduled - 60 min Unscheduled Downtime = 390 Min
Availability = 390 Avail Min / 450 Scheduled Min = 90%

By overall, u should have action plan to reduce break down hours

Thanks tbsiva,

That was very helpful.

Sankrish

 

[rickmcq]

Re: Clarification on TS 16949 clause 8.2.3.1 - "......... availability..."

May I ask what that following, in the same element, means?

"Significant process events, such as tool change or machine repair, shall be recorded"

I'm thinking that "tool change" means machine tool as opposed to a cutting tool.

 

[Stijloor]

Re: Clarification on TS 16949 clause 8.2.3.1 - "......... availability..."

May I ask what that following, in the same element, means?

"Significant process events, such as tool change or machine repair, shall be recorded"

I'm thinking that "tool change" means machine tool as opposed to a cutting tool.

ISO/TS 16949:2009 is not concerned about normal perishable tooling such as drill bits, inserts, milling cutters, etc. However, any changes and repairs on machine tools, jigs, fixtures, other work holding devices, etc., must be recorded.

Stijloor.

 

[rickmcq]

Re: Clarification on TS 16949 clause 8.2.3.1 - "......... availability..."

ISO/TS 16949:2009 is not concerned about normal perishable tooling such as drill bits, inserts, milling cutters, etc. However, any changes and repairs on machine tools, jigs, fixtures, other work holding devices, etc., must be recorded.

Stijloor.

Thank you. How were you able to figure out it means fixtures, jigs, etc. by the way the element is worded?

 

[Stijloor]

Re: Clarification on TS 16949 clause 8.2.3.1 - "......... availability..."

Thank you. How were you able to figure out it means fixtures, jigs, etc. by the way the element is worded?

Thank you! Common sense and many years of experience! "Tooling" must be viewed and interpreted in the context of an automotive parts and materials manufacturing process such as machining parts, assembling components, sewing interior carpet, dying fabrics, stamping sheet metal, injection molding, etc.

Stijloor.

 

[Marc]

Re: Clarification on TS 16949 clause 8.2.3.1 - "......... availability..."

ISO/TS 16949:2009 is not concerned about normal perishable tooling such as drill bits, inserts, milling cutters, etc. <snip>

Even there, most companies do keep track of (read 'records of') perishable tooling in one way or another whether required by TS 16949 or not.

 

[rickmcq]

Re: Clarification on TS 16949 clause 8.2.3.1 - "......... availability..."

ISO/TS 16949:2009 is not concerned about normal perishable tooling such as drill bits, inserts, milling cutters, etc. However, any changes and repairs on machine tools, jigs, fixtures, other work holding devices, etc., must be recorded.

Stijloor.

What about 7.5.1.5 Management of Production Tooling where it mentions "tool change programmes for perishable tools"? I realize it doesn't specifically mention "records" in the element.

 

[Stijloor]

Re: Clarification on TS 16949 clause 8.2.3.1 - "......... availability..."

What about 7.5.1.5 Management of Production Tooling where it mentions "tool change programmes for perishable tools"? I realize it doesn't specifically mention "records" in the element.

That's part of what we used to call "process control", and process control instructions may dictate when perishable tools must be changed. Records of these events are not required unless requested by the organization for the purposes of statistical process control, because in some circumstances, changes may affect the behavior (stability) of the process.

Stijloor.