Hi Tony,
I can't answer your question about controls to maintain positive pressure,
but I can point out to you that this is not a REQUIREMENT of J-STD-001. It
is a RECOMMENDATION. The key word in the spec is "should": "3.6.1
Environmental Controls The soldering facility should be enclosed,
temperature and humidity controlled,and maintained at a positive pressure."
Only the word "Shall" makes a binding requirement. See section 1.4: "1.4
Definition of Requirements. The word shall is used throughout this document
whenever a requirement is intended to express a provision that is binding."
I went through this same thing for a customer audit to J-STD-001. Our
facility had AC, but the humidity was not 100% controlled, and we did not
maintain positive pressure. They insisted the facility had to meet all the
items listed in 3.6.1, but that is not the case.
I would say that if your investigation yields it would take significant
investment to bring your facility in compliance with section 3.6.1, then you
at least have a leg to stand on in stating it is not required per the
specification.
Good luck,
Kevin
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Tony Gasso
Sent: Tuesday, March 07, 2006 3:56 PM
To: [log in to unmask]
Subject: [TN] Positive Pressure
Recently a customer has requested we comply to paragraph 3.6.1 to maintain
positive presure in our facility during soldering operations, for terminals,
wire preping, limited radial components and PCBA's per J-STD-001C
We have an open assemlby area of about 10,000 Sq. Ft., lowered 12' drop
ceilings, and AC but internal doors remain open to both the fabrication area
as well as to the parking lots outside. Other than placing chart recorders
to monitor pressure, temp. and himidity, does anyone else have similar
problems with maintaining environmental controls in your facility and have
you had any positive results with your controls?
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