IEC 61355

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The standard IEC 61355-1 Classification and designation of documents for plants, systems and equipment describes rules and guidelines for the uniform classification and identification of documents based on their characteristic content of information.

It is applied for all documents within the life cycle of a technical products like plants, systems or equipment. It also includes non-technical documents. The main application is the construction, erection and operation of chemical plants and power plants, where the amount of documents may sum up to some 100.000 documents.

Classification code[edit]

The standard provides with the document kind classification code (DCC) a structured letter-code for the classification of any kind of document.

The document kind classification code consists of three code-letters A1, A2, A3, with the prefix "&".

  • A1 Letter code for technical area class
  • A2 Letter code for main class
  • A3 Letter code for sub-class

The letter code A1 is optional, if all documents are from the same technical area. The letter codes A2 and A3 are identical for all technical areas.

Technical Areas[edit]

The technical areas are:

A1 Technical area
A Overall management
B Overall technology
C Construction engineering
E Electrical engineering, instrumentation and control engineering
M Mechanical engineering (normally including process engineering))
P Process engineering (only if separation from M is required))

Classes[edit]

The main classes are:

A2 document kind classes, main classes
A Documentation describing documents
B Management documents
C Contractual and non-technical documents
D General technical information documents
E Technical requirement and dimensioning documents
F Function describing documents
L Location documents
M Connection describing documents
P Object listings
Q Quality management documents; safety-describing documents
T Geometry-related documents
W Operation records

Main classes and subclasses[edit]

Table of main classes and subclasses

A2 A3 Document kind classes, main class and subclass Examples of document kinds
A Documentation describing documents
AA Administrative documents
  • Cover sheet
  • Title sheet
AB Lists (regarding documents)
  • List of documents
  • List of contents Index
AC Explanatory documents (regarding documents)
  • Document description
  • Documentation structure diagram
AD ... AY Reserved for future standardization
AZ Free for user
B Management documents
BA Registers
  • Vendor list
  • Supplier list
  • Distribution list
BB Reports
  • Meeting report
  • Status report
  • Technical report
  • Damage report
  • Installation report
  • Commissioning report
  • Handing over protocol
BC Correspondence
  • Letter
  • Note
BD Project control documents
  • Document interchange list
  • Time sheet
BE Resource planning documents
  • Time schedule
  • Activity network plan
  • Resource load diagram
BF Dispatch, storage and transport documents
BG Site planning and site organization documents
  • Site specification for personnel
BH Documents regarding changes
  • Change notification
  • Change request
BJ ... BR Reserved for future standardization
BS Security documents
BT Training specific documents
  • Training description
BU ... BY Reserved for future standardization
BZ Free for user
C Contractual and nontechnical documents
CA Inquiry, calculation and offer documents
  • Inquiry
  • Calculation sheet (commercial)
  • Offer
  • Letter of intent
  • Letter of acceptance
CB Approval documents
  • Approval application
  • Acceptance/ authorization
  • License
CC Contractual documents
  • Contract
  • Final acceptance certificate
  • Terms of delivery
CD Order and delivery documents
  • Order
  • Delivery note
CE Invoice documents
CF Insurance documents
CG Warranty documents
  • Certificate of guarantee
CH Expertises
  • Expertise
CJ ... CY Reserved for future standardization
CZ Free for user
D General technical information documents
DA Data sheets
DB Explanatory documents
  • System description
  • Structure diagram
  • Description of designation system
DC Instructions and manuals
  • Manufacturing instructions
  • Installation instructions
  • Operating instructions
  • Inspection instructions
  • Maintenance instructions
  • Operation manual
DD Technical reports
  • Technical report
  • R&D report
DE Catalogues Advertising documents
  • Catalogue
  • Product leaflet
DF Technical publications
  • Technical publication
DG ... DY Reserved for future standardization
DZ Free for user
E Technical requirement and dimensioning documents
EA Legal requirement documents
  • Building regulation
  • Operation decree
  • Environmental decree
EB Standards and regulations
  • IEC standard
  • ISO standard
EC Technical specification / requirement documents
  • Requirement specification
  • Technical specification
  • Consumer list
  • Component / device list of instrumentation and control equipment
  • Measuring point and criteria list
  • List of motors and loads
  • Test specification
  • Material specification
ED Dimensioning documents
  • Calculation sheet (technical)
EE ... EY Reserved for future standardization
EZ Free for user
F Function-describing documents
FA Functional overview documents
  • Network map
FB Flow diagrams
FC MMI layout documents (MMI = man-machine interface)
  • Screen display layout drawing
FD Reserved for future standardization
FE Function descriptions
  • Function description
FF Function diagrams
  • Function diagram
  • Logic function diagram
  • Function chart
  • Sequence chart
  • Equivalent circuit diagram
  • Time sequence chart
FG ... FN Reserved for future standardization
FP Signal descriptions
  • Signal list
FQ Setting value documents
  • Setting list
FR Reserved for future standardization
FS Circuitry documents
FT Software specific documents
  • Program diagram
  • Code list
  • Design description
FU ... FY Reserved for future standardization
FZ Free for user
L Location documents
LA Exploitation and survey documents
  • Ground plan
LB Earthwork and foundation work documents
  • Excavation plan
  • Foundation drawing
LC Building carcass documents
  • Reinforcement plan
  • Static drawing
LD On-site location documents
  • Arrangement drawing (site)
  • Site plan
  • Installation drawing (site)
  • Installation diagram (site)
  • Cable routing drawing (site)
  • Earthing plan, drawing (site)
LE ... LG Reserved for future standardization
LH In-building location documents (also applied for ships, aircraft, etc.)
  • Arrangement drawing (building)
  • Building drawing
  • Installation diagram (building)
  • Cable routing drawing (building)
  • Earthing drawing (building)
LJ ... LT Reserved for future standardization
LU In/on-equipment location documents
  • Arrangement drawing (equipment)
  • Assembly drawing
LV ... LY Reserved for future standardization
LZ Free for user
M Connection-describing documents
MA Connection documents
  • Connection diagram
  • Connection table
MB Cabling or piping documents
  • Cable diagram
  • Cable pulling card
  • Piping list
MC ... MY Reserved for future standardization
MZ Free for user
P Object listings
PA Material lists
  • Material list
PB Parts lists
  • Parts list
  • Spare parts list
  • Label list
PC Item lists
  • Item list
PD Product lists and product type lists
  • Product list
  • Product type list
PE Reserved for future standardization
PF Function lists
  • Function list
PG ... PK Reserved for future standardization
PL Location lists
  • Location list
PM ... PY Reserved for future standardization
PZ Free for user
Q Quality management documents and safety-describing documents
QA Quality management documents
  • Quality manual
  • Quality plan
  • Quality record
  • Quality guideline
  • Audit plan
  • Audit report
  • Non-conformity report
  • Declaration of conformity
QB Safety-describing documents
  • Safety study
  • Risk assessment
QC Quality verifying documents
  • Test certificate
  • Material certificate
  • Test report
  • Fault report
QD ... QY Reserved for future standardization
QZ Free for user
T Geometrical form describing documents
TA Planning drawings
  • Concept drawing
  • Design drawing
TB Construction drawings
TC Manufacturing and erection drawings
  • Manufacturing drawing
  • Drilling plan
  • Welding plan
TD ... TK Reserved for future standardization
TL Arrangement documents
  • Layout drawing
TM ... TY Reserved for future standardization
TZ Free for user
W Operational protocols and records
WA Set point documents
  • Batch recipe
WB ... WS Reserved for future standardization
WT Logbooks
  • Operational log
  • Maintenance and modification log
  • Test log
WU ... WY Reserved for future standardization
WZ Free for user

Source: IEC 61355-1

References[edit]