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| User Requirements Specification - URS | ||||||||||||||||
This document will specify your requirements (without over detailed explanations of your design solutions). Relevant Good Manufacturing Practices (GMP), Good Laboratory Practices (GLP) and other regulations or guidelines will be referred to. Your requirements will be prioritised into essential and desirable requirements. Boiler Plate URS documents are also available. The URS is the first step of a typical project is outlining the user's requirements. GAMP® formalises these requirements in a structured document - predefined templates help with regulatory references, "fill in the blanks" (and standardised "Boiler Plate" sections to outline things like documentation standards). The URS is documented in GAMP®4, Appendix D1. To accompany a URS, you may also elect to distribute things like coding standards and electrical procurement standards that we can prepare for you. GAMP®/ISPE/JETT will likely harmonise, to some degree, work under ASTM E55 with various document standards including the suggested layout of an effective URS. Please read here for some more information on a URS. |
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| Functional Specification - FS | ||||||||||||||||
Also called a Functional Requirements Specification (FRS) or even Functional Description (FD). This document will respond to the URS. A "Requirements Traceability Matrix" or RTM will be included, if required. The FRS will explain what the end system will do, what is to be provided and the design objectives for the system. Any limitations or URS exceptions will be described. Boiler Plate FRS documents are also available. The FRS is the second step of a typical project and a direct response to the URS. The FRS is the principal document to define what the system will do and what functions are to be provided by the system. Again, predefined templates assist you in getting the right FRS for your system. The FRS is typically written by the supplier, and more than one supplier may be asked to provide an FRS. To have useful FRS documents, we will provide assistance to your suppliers. Please read here for some more information on a URS, a similar effort would be placed into producing a relevant FS. |
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| Design Specification - DS (H-DS and S-DS) | ||||||||||||||||
This represents a family of documents - Hardware Design Specifications, Software Design Specifications and Software Module Design Specifications. The H-DS defines the electrical control system and ancillary systems including computers, I/O, PACs/PLCs, environment and electrical supplies. The S-DS is the software corollary to the H-DS (more than one S-DS can be written for large projects). The S-DS covers databases, software modules, and other aspects of the software engineering involved in the project. For large or complicated systems, Software Module Design Specifications can also be written. RTMs are often written to trace back to the FRS and URS. Boiler Plate DS documents are also available. These are detailed design documents intended to outline the actual design of a system. They are often used as the template for the "Technical Manual" at the end of the project. These detailed documents define everything from cable specifications to pseudo-code (or actual code) outlines of the software engine. Please read here for some more information on a URS, a similar effort would be placed into producing a relevant DS. |
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| Enhanced Design Review - EDR | ||||||||||||||||
Sometimes called a Design Qualification (DQ). This is a check stage where the requirements are reviewed against the proposed design to verify that the system will perform as required. The tie-in to the Validation Master Plan is also carried out at this time. This step of the project provides for a documented check of the project to date (URS, FRS, DS) to verify that the URS (and Master Validation Plan) track through correctly. The EDR is sometimes called a Design Qualification (DQ) and provided for the in the ISPE Baseline Guides rather than GAMP® itself. The EDR is normally reserved for large projects. For GAMP®5, this step may be re-categorised as some other kind of risk management programme in line with ASTM E2500-07. |
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| Code Review and Categorisation | ||||||||||||||||
Application software for pharmaceutical, nutraceutical and biotechnology cannot be "plain" or "boiler plate". GAMP® specifies areas of review including looking for dead code, modular programming, annotation and an appropriate tag-naming convention. Third-party reviews are highly recommended for large systems. GAMP® recognises five levels of code - Level 5 ("bespoke") requiring the most attention. GAMP® categorises code according to the following:
A typical project contains sub-systems from more than one category (O/S, configurable, firmware, bespoke). Risk is highest when software is Category 5. There are two categories of risk for hardware:
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| Risk Assessment | What is risk? Risk is the possibility of an event occurring that will have a negative impact on the production system. The event may be the result of one problem or a combination of problems (UK CPNI). Alternatively risk can be defined as "[a] combination of the probability of an event and its consequence" (ISO/IEC Guide 73:2002). Risk is often labelled as the "Severity" against the "Occurrence" against the "Detectability" or SOD. This fits well with a Boston Grid as outlined a little later on. Notice that if a likelihood of occurrence is zero then no verification is required and the risk analysis is quickly concluded. The Boston Grid will tell us "Risk Class" and "Risk Probability". Risk Assessment is much more difficult to prescribe or categorise than the "traditional" GAMP®4 approach. The point of an effective programme to manage risk is to concentrate on what can cause harm to the end user rather than just validating or verifying everything (and spending lots of money in the process). The old "kitchen sink" approach also might lead a regulator to feel that an end user or supplier does not understand their system as they are verifying everything at 100% risk, not just what is actually at risk. So at the beginning of the project - and during or before a URS is developed, an preliminary Risk Assessment should be carried out by the end user. What should be considered are the following:
The reader is directed to GAMP®5 Appendix M3 for more details. A good driver for a moribund project is that doing nothing is considerably higher risk to the end user than going ahead with the project. At least with the Risk Assessment written up, the management team or steering committee is aware of what potential bad publicity awaits them! Once the project has been classified according to GAMP®5 as Category 4/5 (Software) and/or Category 2 (hardware), then during the development of the Functional Specification and Configuration Specifications (Design Specifications) the end user and supplier would conduct additional Risk Assessments:
The reader is directed to GAMP®5 Appendix M3 for more details. Note that the supplier is now "on the hook" in a need to understanding risk - this was simply not the case for GAMP®4. There are two approaches to Risk Assessment - one is to embed the Risk Assessment into "existing" documents - such as the URS and FS. The other is to keep them as separate documents. It really depends on how often the documents are expected to change which approach is "recommended". Also, if the Risk Assessment can easily involve a large team or other consultants/suppliers it may not be practical to include it in the FS being written by an equipment supplier. In larger projects there may be multiple pieces of equipment that are combined into one Risk Assessment. We recommend that it be kept separate, especially when dealing with suppliers of high-risk systems who are not used to performing Risk Assessments (or, perhaps, dealing with overseas suppliers). One excellent part of the Risk Assessment is the core areas of 21 CFR Part 11 - indeed, the 21 CFR Part 11 Assessment can now be categorised as part of the Risk Assessment. A useful model for a Risk Assessment is the one presented by ISO 17799 and the utilisation of 3x3 Boston Grids. We will add some more information on this the next time this web site is updated. |
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| Supplier Audit Programmes | ||||||||||||||||
An effective Supplier Audit Programme (as required by GAMP® for Category 5 software and Category 5 hardware systems). An actual Supplier Audit can either be accomplished "by post" (i.e., remotely) or "in person". The scale of the project and the effectiveness of each type of audit must be considered prior to executing the programme. A Supplier Audit Programme includes questions pertaining to:
It is expected that where a supplier does not meet expectations, a written follow-up is made along with subsequent checks to verify that the supplier has adequately addressed their shortfalls. Also, an annual re-audit is expected for suppliers such as System Integrators who supply services for many projects (versus a supplier who provides services for one project only). |
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| GAMP® 5 | ||||||||||||||||
GAMP®5:
The authors of GAMP® recognise that a great deal of effort is being expended on simple system (say Category 1) that is unnecessary. GAMP®5 provides for a level of rigour (whether or not to include a Design Specification, for example) based on the category of code. |
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| The New 21 CFR Part 11 (ERES) | ||||||||||||||||
Click here to read more about 21 CFR Part 11 (ERES) including expectations for 2008-2009 with the updated 21 CFR Part 11. |
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| Retrospective Validation | ||||||||||||||||
| Should your Retrospective Validation Programme raise any concerns regarding the control system, a refurbishment or risk-based analysis programme may be required. Once a control system has been identified as being at risk, then prompt action is required. Inconsistencies in control (or measurement) must be ascertained from a thorough process control system review. At the same time, aspects such as security can also be addressed (along with efficient design techniques such as placing the critical control network away from the enterprise network). Other investigative techniques include Arc Flash and component obsolescence. At the end of the audit, documented evidence to strict pharmaceutical standards is produced that can be included in the reports to your management team and to your regulator. | ||||||||||||||||
| Web Links | ||||||||||||||||
| Please click here for a list of regulators. For other links, please click here. Please note that GAMP® is a registered trade mark of ISPE. This and other trade marks are used for identification purposes only. | ||||||||||||||||
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