New MIL-PRF-38534 letter for monolithic hybrids

Users of MIL-PRF-38534, “Hybrid Microcircuits, General Specification for,” will want to be aware that the DoD has released a letter with information of importance to hybrid microcircuit manufacturers.  The letter addresses a legacy issue stemming back to the mid-1990’s.  It clarifies the position of the DoD with regards to monolithic hybrids that are currently MIL-PRF-38534 class H or K compliant.

Monolithic hybrids are monolithic microcircuits built by hybrid microcircuit manufacturers using their certified and qualified lines.  They are always documented by SMD’s (Standard Microcircuit Drawings).  They were allowed because organizations that built monolithic microcircuits according to MIL-I-38535 (now MIL-PRF-38535) had declined and adequate supplies were a concern.

Over time, the DoD expectations of these monolithic hybrid supplies have not been met.  For this reason, the DoD has determined that all future monolithic hybrid SMD’s will be issued using the requirements of MIL-PRF-38535, not the parameters of MIL-PRF-38534.

To follow up on the letter, you can expect that the wording of paragraph 3.9 of the MIL-PRF-38534 will be amended in the future.  This means that the document will no longer allow for the development of monolithic hybrids according to it’s requirements.

If you have questions, you can certainly get a copy of the letter as a starting point.  It’s available from Document Center Inc.  Contact our staff and mention this blog posting, and they will provide you with a copy at no charge.  Just send them an email at  If you are still unsure about how this change will impact your business, there is a point of contact for the MIL-PRF-38534, Mr. Greg Cecil.  Information on how to contact Mr. Cecil can also be provided by our staff.  Remember, Document Center Inc. has been supporting U.S. government contract manufacturers since 1982.  Make us your Standards Experts!

DEF STAN 03 Series now AMS 03 Series

DEF STAN standards are released by the U.K. Defence Standardization Program, part of the U.K. Department of Defence.  The DEF STAN 03 series has been an important documentation series for military/defense manufacturing companies.  However, like many of the U.S. Defense documentation, now they are being migrated over to the oversight of the aerospace organization, SAE International.  The new AMS editions replace the Def Stan publications and have been issued under the Open Government Licensing Agreement.

Here’s a list of the items that were released last week.  Each is linked to the Document Center order page — the documents are copyright and must be purchased from an authorized dealer like Document Center:

  • AMS-03-1, “Impregnation of Porous Castings and Sintered Metal Components”
  • AMS-03-2, “Cleaning and Preparation of Metal Surfaces”
  • AMS-03-3, “Protection of Aluminum Alloys by Sprayed Metal Coatings”
  • AMS-03-4, “The Pre-Treatment and Protection of Steel Items of Specified Maximum Tensile Strength Exceeding 1450 MPa”
  • AMS-03-9, “Electro-Deposition of Silver”
  • AMS-03-11, “Phosphate Treatment of Iron and Steel”
  • AMS-03-14, “Electrodeposition of Chromium for Engineering Purposes”
  • AMS-03-17, “Electro-Deposition of Gold”
  • AMS-03-18, “Chromate Conversion Coatings (Chromate Filming Treatments) Grades: Standard and Brushing for Aluminum and Aluminum Alloys”

You’ll be able to order the documents in either paper or pdf format.

It is expected that all of the Def Stan 03 series will migrate to SAE International for care-taking.  You’ll need to purchase copies of the new AMS editions in order to be compliant with the current edition of each.

If you have questions about these standards, or want to use a source for standards that keeps you informed about replacement documents like these, you’ll want to make Document Center Inc. your standards experts.  We have been working with standards since 1982.  We have been supporting government procurement since our inception.  Our staff can be reached by phone (650-591-7600), fax (650-591-7617) or email (  We are here to help you maintain your compliance information and use it more effectively.

Changes to BPVC 2015 Section I to V

The BPVC, “ASME Boiler and Pressure Vessel Code,” is being revised.  The new BPVC 2015 Edition will be available in July and you’ll want to pre-order your copy from Document Center Inc. now.  This new update replaces the previous 2013 Edition which is now obsolete.  You’ll notice that the set is now updated on a two year schedule, which means that there are not any addenda released any more.  The interpretations are still available and are posted online.

ASME has made a list of key changes available to ASME dealers like Document Center Inc., so we’re letting you know about them in advance of the release in July.  Here are the main things to look for in your new editions of the Sections I through V:

For Section I:

  • You’ll find changes in the Parts Fabrication Certification Program
  • A Part PFE (Requirements for Feedwater Economizers) as been added
  • There are changes with the addition of Solar Heated Steam Generators
  • Part PL on Requirements for Locomotive Boilers have been added
  • There’s a new paragraph PEB-8.3, which allows for the use of Section VIII rules for the design of electric immersion heater element support plates (unstayed flat heads)

For Section II:

  • Testing requirements have been added to Appendix 5 for advanced alloys like CSEF steels
  • 25 ferrous specifications have been adopted or revised in Part A
  • An additional 10 nonferrous specifications have been adopted or revised in Part B

For Section III:

  • There are now definitions for local primary membrane stress intensity and for local thin areas
  • Code case N-755 have been incorporated
  • Appendix W has been updated
  • Design by analysis rules for reversing dynamic loads has been updated
  • Revisions have been make for stress indices for branch connections for r/R ≤ 0.5

Section IV:

  • You’ll find updates to the parts fabrication certification program
  • Section HG-401.1 on safety valve sizing has been revised
  • Revisions are made in the section on manufacturers with multiple locations
  • Section HG-530 on marking of boilers is changed
  • The mandatory Appendix 2 is also modified

Section V:

  • The section on APR Technology is updated
  • Article 18 on guided wave UT has been adopted
  • Revisions have been made to the mandatory Appendix to Article 4 for the examination of HDPE
  • 15 ASTM specifications for nondestructive examination have been adopted or revised in the following parts: 10-1576, 11-1196, 11-1197, 11-1198, 11-1199, 11-1975, 12-1986, 12-189, 12-1995, 12-1996, 12-1997, 12-1998, 12-1999, 12-2042, 13-1981, 13-904, 13-905, 13-906.

Now you’ll need to get copies of the new BVPC 2015 Sections.  Order from Document Center Inc., an authorized dealer of ASME standards since the 1980’s.  Here’s our order page for you to review, Document Center List of ASME Boiler and Pressure Vessel Codes.  Each Section is linked for you to place your order online.  The new editions are due out in July but can be pre-ordered now.

Remember, you’ll want to get your copies from an authorized distributor like Document Center Inc.  Make us your Standards Experts!

New ISO/TS 16976-2 2nd Edition – Human Factors for Respiratory Protection

ISO/TS 16976-2, “Respiratory protective devices – Human factors – Part 2: Anthropometrics,” has been revised.  The new 2nd Edition is available now from Document Center Inc., an authorized ISO standards dealer.  This technical specification provides you with basic anthropomorphic data necessary for the proper design of respiratory protection devices.

Why is this information necessary?  Of course, proper sizing and fit play an important role for the design, selection and use of these devices.  However, there are other factors at work.  First, the type and intensity of work impact the use of oxygen supplied by these devices (metabolic rate factor).  Also, weight and the distribution of weight can also affect this metabolic rate.  And there’s also what’s called “energy cost,” the amount of work that it takes to actually get air in and out of the lungs.

What will you find in ISO/TS 16976-2?  This document includes a series of measurement procedures, including landmarking.  It also has anthropometric data for head, face and neck dimensions.  This is presented in Table 3, with the data presented by gender.  Similar data is presented for torso dimensions in Table 4.  Section 7 covers the relationship between the headform and the torso.  Section 8 is devoted to a discussion of human test panels for facial features and Section 9 provides you with models of headforms.

Annexes A and B are part of the requirements of the specification.  Annex A is a description, definition, and diagrams of selected landmarks.  Annex B covers the same parameters for the dimensions to be measured.  Annex C is informative only, with examples of the application of human test panels for facial features.  A 10-item Bibliography completes this 32-page publication.

What’s new in this edition?  The new ISO/TS 16976-2 2nd Edition cancels the 1st Edition from 2010.  It has been technically revised, with the primary changes occurring in Section 8.3 (values have been updated).  Also, the Technical Corrigendum has been integrated into the new revision.

Certainly, in clothing the need for standardized sizing seems appropriate but not critical.  With protective devices, the need for proper fit is an essential component for meeting the expectations of performance.  And with respiratory devices, the additional burden of oxygen supply means that this is a factor that cannot be overlooked.

Now you’ll need to get a copy, so head to Document Center Inc.’s webstore at  Here you can order the ISO/TS 16976-2 in either paper format or for pdf download.  If you’d like multi-user access, then contact our staff for more information about our Standards Online subscription service.  They can be reached by phone (650-591-7600), fax (650-591-7617) or email (  Remember, we’ve been selling standards since 1982.  Make us your Standards Experts!

New ISO 11040-4 – Syringes

ISO 11040-4, “Prefilled syringes – Part 4: Glass barrels for injectables and sterilized subassembled syringes ready for filling,” has just been updated.  The new 3rd Edition is available from Document Center Inc. now.  This 60-page revision has been technically updated with a number of important changes.  If you use this standard you’ll want to purchase this update right away.

ISO 11040-4 provides manufacturers with the requirements for producing syringe assemblies for sale to pharmaceutical companies for use as pre-filled syringes.  These systems provide a methodology for delivering drugs with a significantly reduced chance of contamination.  ISO 11040-4 allows for standardization of these systems, so that pharmaceutical companies can purchase these syringe systems confident in their sterility and quality for the delivery of their preparations.

If you use this standard, you’ll want to know what changes are in the new ISO 11040-1 2015.  Here’s a list for your review:

  • Sterilized subassembled syringes and their test methods have been added.
  • There’s new general requirements for quality systems, testing and documentation.
  • Labeling requirements have been updated.
  • Packaging requirements have been added.
  • The requirements for syringe barrels have been changed.  There are new requirements and test methods for flange and Luer cone breakage resistance.  Additional guidance and requirements for Luer conical fittings and functional testing are included.  And the clause on designation has been deleted.

Now to get a copy.  Of course, you’re aware that the ISO 11040-4 is a copyright document and must be purchased from an authorized dealer.  Since Document Center has been selling ISO standards under contract since the 1980’s, you can buy from us with confidence.  Order the ISO 11040-4 online for delivery in either paper format or as a pdf download.  You’ll use the Document Center Inc. webstore at  Would you prefer multi-user access?  Ask our staff about our Standards Online subscription service.  You can reach them by phone (650-591-7600), fax (650-591-7617) or email (  We’re a woman-owned small business, selling standards since 1982 from our Silicon Valley headquarters.  Make us your Standards Experts!

New IEEE 1872 on Robotics and Automation

IEEE 1872, “IEEE Standard Ontologies for Robotics and Automation,” has just been released.  This new standard is like an overview document of terms, definitions and concepts, only expanded to include the technical details so necessary to developing a consistent platform for knowledge sharing.  So you’ll find relations and axioms used for robotics and automation defined in this standard.  IEEE calls it a “reference vocabulary” for those involved in robotics and automation.  The ontology presented is CORA (Core Ontology for Robotics and Automation).

What makes this so interesting is that the standard has been developed in light of the growing complexity of the interaction of robots to robots and robots to humans.  Seems as though these machines are starting to get pretty smart!  So it’s necessary to have tools for efficient and reliable data integration and exchange with and among them.

This is a highly technical document, with 60 pages of information provided for those working with robots in industry, academia, and government organizations.  It begins with the usual three clauses for scope, referenced documents and terms and definitions (including acronyms).  Clause 4 covers conventions, reminding you of how the various axioms are presented.

The balance of the document provides you with an in-depth review of SUMO (a top-level ontology of categories for ontologies) and a series of axioms.  These include the CORAX axioms, CORA axioms, RPARTS axioms, and POS axioms.  You’ll get a background review and technical details for each.  This can include such things as attributes and measurements.  To illustrate what I mean, here’s the start of the information on the PositionCoordinateSystem for the POS axiom:

“A PositionCoordinateSystem is an abstract entity used for specifying location in relation to a reference object.
(subclass PositionCoodinateSystem Abstract)”

Not necessarily stuff for the likes of me, but all you engineers out these interested in robotics will be right in your element!

Three informative annexes complete the document – Annex A on the general aspects of ontology, Annex B on developing an ontology, and Annex C, a 23-item bibliography.

The IEEE 1872 is a copyright document, so if you need a copy you’ll need to purchase it.  Document Center Inc. is an authorized dealer and all IEEE standards can be purchased at our webstore,  You can order this standard in two formats:  IEEE 1872 paper copy or IEEE 1872 pdf format.  And you can also include it in our Standards Online multi-user subscription service.  Contact our staff for more information by phone (650-591-7600), fax (650-591-7617) or email (  Make Document Center your Standards Experts!

New EN 15628 – Qualification of maintenance personnel

EN 15628, “Maintenance. Qualification of maintenance personnel,” has just been released.  This new European standard provides information for defining the knowledge, skills, and competence levels for maintenance personnel.  It’s intended to be used by any business or educational facility that offers training and qualification of maintenance personnel.

The EN 15628 replaces a previous technical report on the same topic, CEN/TR 15628, from 2007.  In it you’ll find information on 3 levels of qualification:


  • European maintenance technician – EQF level 4 to 5, or equivalent, with higher vocational training and at least 2 years of experience in maintenance.
  • European maintenance supervisor – EQF level 5 to 6, or equivalent, with technically-based training and at least 3 years of experience.
  • European maintenance manager – EQF level 6 to 7, or equivalent, with a Management / Engineering background and at least 5 years of experience.


All of these categories of competence are for staff involved in the maintenance of plant, infrastructure and production systems.

This document shows the growing importance of human resource standards.  We list all standards in this classification at our page for Standards on the Management of Human Resources.   You can use this page to locate HR and training standards that are applicable to your needs.  And if you are interested in what’s new on this topic, I regularly post a list of new releases at  Here’s one from the 2nd Quarter 2014:

Of course, for those of us who have been working with standards for many years, the shift from engineering and technical standardization towards management and HR standards is an interesting trend.  I would be interested to know if you use any such standards, and if so, your assessment of the value of these types of documents.

Meantime, no matter what kind of standard you need, Document Center Inc. is here to help you out!  You can place your order online at our webstore,  Or contact our staff for more information and assistance.  They can be reached by phone (650-591-7600), fax (650-591-7617) and email (  Make us your Standards Experts!

New MIL-STD-1474 E – Noise Limits

MIL-STD-1474, “Design Criteria Standard – Noise Limits,” has just been updated.  The new Revision E is available and represents a major re-write of this important standard.  The document is used in U.S. military procurement to specify the noise limits for material purchased by the DoD (Department of Defense) – when in use.  In addition, it provides the user with the various test requirements for testing noise levels to make sure products and systems meet MIL-STD-1474 levels.

Other standards provide you with hearing damage risk and hearing conservation requirements.  The MIL-STD-1474 provides you with a set of design criteria only.  And you’ll be expected to provide goods to the government that emit the lowest feasible noise level!  This is because there can be any number of pieces of equipment in use in any given military operation.  The combination of all these noises can be harmful.

What’s new in the MIL-STD-1474 E?  You may be used to those black lines in the margins of updates to military specifications and standards.  There’s too many changes in this new issue to make that possible.  However, you will want to note that community annoyance requirements have been deleted.  Why?  There are too many local codes and other requirements.  Since regulations differ in various jurisdictions (communities, states and countries), it was not feasible as of this issue to try to address the issue comprehensively.

MIL-STD-1474 E is a 123-page standard.  It has the usual Scope, Referenced Documents and Terms and definitions sections to start.  Sections 4 and 5 provide you with both general and detailed requirements.  Section 6 covers the usual notes.

The majority of the document is comprised of 6 Appendices.  Appendix A covers steady-state noise requirements for use in personnel-occupied areas.  Appendix B covers impulsive noise requirements for the same.  Appendix C is on aural non-detectability requirements.  Appendix D covers aircraft noise requirements.  Appendix E is for shipboard equipment while Appendix F gives you the requirements for shipboard compartment noise.

You can purchase copies of this standard in both paper format and for pdf download from Document Center Inc.  Just order at our website  The purchase will come with our complimentary notification service for alerts on future releases.  Another service to consider is our Standards Online multi-user subscription service.  The professional edition is currently in the works to be released in the next month or so.  It will have a docdiff tool so you can compare one edition of a standard to the previous edition.  This can take the place of those lines in the margins that are missing in this update.

Remember, Document Center Inc. has been working with Mil Specs and Standards since 1982.  We’re a small, woman-owned business located in Silicon Valley.  Make us your Standards Experts!

ISO/IEC 20006-2 extends IT Learning Information Model

ISO/IEC 20006-2, “Information technology for learning, education and training – Information model for competency – Part 2: Proficiency level information model,” has just been released.  The ISO/IEC 20006 series is intended to be used by software developers, implementers, and architects of human resources systems and learning systems.  The second of the three-part series provides users with an information model for exchange of data on proficiency.  Use cases provide additional support.

The use of IT for learning and human resources is on the rise.  For companies, it’s reflective of the rapid pace of change in so many industries.  For academic settings, it’s a factor of cost-reduction.  This is leading to an explosion in SaaS solutions for both learning itself and human resources staff development and record-keeping.

One element of such programs is the interchange of information.  And among the information elements is proficiency or competency.  Your staff has taken an e-course to update their skill set.  At the end of the course, they proved that they digested the material by passing a test.  What information about that do you need to keep and perhaps move from one system in your company to another?

Elements of competency include data on the action (training), who (the actor), what (the competency or skill), where (environment – to include location, duration, date and time), how (the method of measurement), , the trainer (school, university, etc.), outcome (level of proficiency), and then like.  The ISO/IEC 20006 series answers the question: “How should you represent these elements within an IT system?”  Part 2 focuses specifically on the identification and data elements for proficiency itself.

Since I am not a technical person, I grant you that a standard with this degree of technical information can be a challenge to review!  However, it is clear that this is the document for those who need to categorize and label such information units and exchange them successfully between differing systems.  First you’ll get a firm grounding in the relevant terms and relationships.  Then the ISO/IEC 20006-2 covers proficiency level information modelling in depth.  You’ll get the details on the proficiency composition model, the proficiency information model, and the level information model.  Annex A covers the application to the EQF (European Qualifications Framework).  Annex B does the same for the ITSS (Japanese National Skills Standard).   A 4-item bibliography completes the document.

What’s next for the ISO/IEC 20006 series?  The ISO/IEC 20006-3, “Information technology for learning, education and training — Information model for competency — Part 3: Guidelines for the aggregation of competency information and data,” is in the works.  The target publication date is for 2015, so we will see…

ISO and IEC remind you to get your copies of these standards from an authorized dealer.  Document Center  Inc. has been selling these standards under license agreement since the 1990’s.  You can find the documents you need at our webstore,  You will be able to order the ISO/IEC 20006-3 in both paper format or for pdf download.  And if you’d prefer to get the document as part of a multi-user subscription, ask our staff about our Standards Online service.  You can reach them by phone (650-591-7600), fax (650-591-7617) or email (  Make us your Standards Experts!

New IEC 62014-5 — Adopts IEEE 1734

There’s a new IEC 62014-5, “Quality of Electronic and Software Intellectual Property Used in System and System on Chip (SoC) Designs.”  This new Edition 1.0 actually adopts IEEE 1734 of the same title that was released in 2011.  And the IEC edition has now been adopted itself in the European Union under the number EN 62014-5.  I’m mulling over submitting a paper to the World Standards Day competition — and the theme for World Standards Day this year is “Standards – The World’s Common Language.”  It makes me wonder, are we creating one common language or a tower of babel?

Let’s talk about the document itself and it’s origins.  From 1996 to 2008, the VSI Alliance — a consortium of companies in the System-on-Chip (SoC) industry — developed a series of standards for virtual components.  The purpose of the group was to provide ” leading edge commercial and technical solutions and insight into the development, integration, and reuse of IP.”  The Alliance developed developed the VSIA-QIP v4.0 spreadsheet and macros, and the QIP Metric Users Guide Version 4.0 document. Some of this material then made it’s way into the IEEE 1734.  This is not an unusual occurrence, since many consortia hand off their documents to other organizations when they feel that they have achieved their goals and decide to disband.  And it is not unusual for the new caretaker to renumber the publication, at least the initial acronym if not the entire reference number.

Your IEEE 1734 document provides users with a standard XML format for representing electronic design intellectual property (IP) quality information.  This is basically a reusable collection of design specifications.  The QIP then stands for Quality (electronic design) Intellectual Property and is integral to this document.  It is a set of rules that allow the user to class products as QIP compliant.  The standard first explains the fundamentals of using these rules and then provides you with the actual XML tagging needed for compliance.

Fast forward from 2011 to 2015.  Now IEEE and IEC are working together to integrate many of the IEEE standards into the IEC data set.  We find co-numbered documents released for nanotechnology, design automation, instrumentation, etc.  These standards are IEEE documents that are then submitted to IEC for inclusion as IEC publications.

However, when these IEEE standards make the move to IEC, they are given new IEC numbers.  So we now have two documents living side by side, with the same internal content but with two different numbers.  You’ll see this phenomena in some U.S. military publications, where different branches of the military co-number a document with a numbering scheme from each (an example?  A recent publication on Ophthalmic Services is co-numbered Army Regulation AR 40-63, SECNAVINST 6810.1, and AFI 44–117).  This co-numbering structure is also to be found in the IEC adoption of the IEEE 1734.  The new edition cover sheet has first IEC 62014-5, Edition 1.0, 2015-03, and then IEEE Std 1734™-2011.

OK.  We can deal with co-numbering now that we understand how it happens.  But wait!  The European Union decides to adopt the IEC publication.  Yes, now there is an EN 62014-5 that has been released for use in the EU.  And, as with all EN documents, it is only available in the national editions.  So you will find BS EN 62014-5 now available, with other national reprints soon to follow no doubt.

What do you think?  Because the same source material is now officially adopted in a wider number of jurisdictions, are we moving towards a common language?  Or because of the proliferation of document numbers for the same core material, are we heading for a kind of babel-mania?  I’d welcome your comments!

Meantime, if you do need to get any of these standards, please choose Document Center Inc. as your preferred supplier.  We’re at and can help you with purchasing and maintaining your standards collection.