Joint Service Specifications, JSS 0251-01: 2015 (Revision No-2)
What is JSS 251?
JSS 251 is a defence documentation standard. To make it simpler, whenever we buy some household item, be it a fridge or AC, we get a user manual. If you look closely, each company follows their documentation structure or pattern and content flow. There will not be any similarities in formatting or layout. Every OEM has their separate documentation teams and they design in their way. Even the size and dimensions of the document may be different. Similarly whenever a simple system or complex system is delivered to defence users i.e. Army, navy or air force, along with the original equipment OEMs also has to supply Manuals. But, in this Defence suppliers case, the defence wants all the OEMs to follow similar standards which are defined by them. They want every OEM to follow the document structure the same way. These guidelines are drafted in JSS 0251-01: 2015 standards book. Every OEM has to follow the same guideline while delivering Softcopies and also Hard copies.
Why standardization is needed.
Why is this documentation is to be followed?
Well, if it is a deliverable is single AC then no problem. But unlike household equipment, when defence labs build some equipment for example let us say a Missile, here several OEMs are involved may be more than 40 different OEMs i.e. for ground systems, Vehicle chassis, Radars, Power systems, Hydraliques, launchers, transport vehicles and maybe for components too, so many different vendors are involved. If 40 different OEMs makes the documentation in their way, it will be very confusing to refer to. Hence all these OEMs has to follow a single standard JSS 251 so that all 40 looks the same for the operator or Maintainer who is the actual END-USER of the equipment. The purpose of documentation is to refer to the Manual in case of any emergency, or when the end-user is in the war field and OEM is not available for repair then the operator should be able to refer to the topics very easily.
Normally, all these manuals are also copied in DVD and delivered along with hard copies.
This specification talks about the procedure for the preparation and production of technical publications for electronic and electrical equipment.
These standards are drafted by the Directorate of standardization, department of Defence Production, Ministry of Defence.
JSS 251 describes the format and procedure for the preparation and production of technical publications for electronics and electrical equipment required to be supplied by OEMs or manufacturers.
Along with equipment or subsystem, few technical publications are normally submitted by OEM to defence lab, or end-user i.e. army, navy or air force.
To name a few documents
Design specifications
User Hand Book
Technical Manual
Procurement Drawings
Packing specifications
List of components
List of Carried spares
List of Installation spares
Engineering support package
List of accessories
List of a special tool, test equipment etc…
For simple equipment’s full range of the above-mentioned publications are not required. UHB and Technical manual can be combined and made into a single document.
Similarly, for complex systems or equipment, there may be more than 1 technical Manual. There may be TM for every subsystem.
These specifications talk about COVER PAGE designs which include Code Number, Date of Publication, Title/ Name of publication, Title of equipment and other details
Some equipment may be imported from other countries and the documentation may not be in the JSS, hence such manuals are to be converted to JSS documents.
All the text should be in black ink except security classifications & repair /Replacement instructions on Title & Cover page and also Safety Hazards in the initial pages of manual
The paper used for printing should be 80 GSM or more.
The specification also talks about Descriptive details, Nomenclature, Warnings, Cautions, List of related publications, illustrations Record of changes, Security Markings etc.
Following is the sequence of contents to be followed.
Front/cover page which is printed on thicker paper or laminated
The title page which is the same as the Frontpage
Record of changes
List of other associated handbooks
Safety warnings in red colour
First-aid instructions
Cautions & Notes
Demolition instructions
Change Notice
List of contents
List of illustrations
Text / content
The separate card titled Illustrations
Illustrations
Sepaarte card titles Appendix “A” , B,C
Appendix or appendices
Back cover page
If the technical Manual has more than one volume then, Volume 1 of 2 the Technical description
Volume 2 of 2, Illustrations etc to be used
What do you need to make our Documents JSS compatible.
We are not domain experts hence all the raw documents to be provided to us
We will reorganize all the documents as per the prescribed standards
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