Document Details |
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| Name of Department/Committee : | MED 40 |
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| Document Number : | MED 40 ( 24378) |
| Document Title [English] : | Safety of machinery - Evaluation of fault masking serial connection of interlocking devices associated with guards with potential free contacts |
| Document Title [Hindi] : | मशीनरी की सुरक्षा - संभावित मुक्त संपर्कों वाले गार्डों से जुड़े इंटरलॉकिंग उपकरणों के फॉल्ट मास्किंग सीरियल कनेक्शन का मूल्यांकन |
| Document Type : | New |
| Language : | English |
| Priority : | 3 |
| ICS Code : | 13.110 |
| Date of Project Approval : | 03-08-2023 |
| Standards to be Superseded : | |
Classification Details |
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| Group : | Gases, Gas Cylinders , Machine tools and other mechanical products |
| Sub Group : | Conveyors, hoisting and lifting equipments and rope ways |
| Sub Sub Group : | Lifting chains and ropes |
| Aspects : | Safety Standard |
| Risk : | None |
| Certification : | None |
| Short Commom Man's Title : | |
| ITCHS Code : | |
| Ministry : |
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| Sustainable development Goals : | |
| Degree of Equivalence : | Identical under single numbering |
| Identical/Equivalent Standards : | ISO/TR 24119:2015 |
| Organization Type: | ISO |
| Sl.No. | Synosis Points | |
| 1 | This Technical Report illustrates and explains principles of fault masking in applications where multiple interlocking devices with potential free contacts (B1 to Bn) are connected in series to one logic unit (K) which does the diagnostics (see Figures 1 to 7). It further provides a guide how to estimate the probability of fault masking and the maximum DC for the involved interlocking devices. This Technical Report only covers interlocking devices in which both channels are physical serial connections. | |
| 2 | This Technical Report does not replace the use of any standards for the safety of machinery. The goals of this Technical Report are the following: — guidance for users for estimation of the maximum DC values; — design guidance for SRP/CS. | |
Timeline Details |
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Stages |
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| Sl. No. |
Stage | Date of Occurence | Remarks | Circulated to | Files |
| 1 | Generation of Document Number | 03-08-2023 | ------- | ||
| 2 | P-Draft | 07-12-2023 | Covering letter generated | ------- | |
| 3 | P-Draft | 07-12-2023 | Duration : 37 Days Remarks : Preliminary Draft circulated to Committee members for one month as decided by the CommitteernrnNote: The ISO documents are being sent to you along with this email as part of the process of Standards Formulation only Please note that ISO hold copyright ownership for these documents and hence these documents should not be used by you or any other for commercial purpose rn |
MED 40, | ------- |
| 4 | Skipped to W-Draft | 04-03-2024 | Stage-Changed | ------- | |
| 5 | WC Draft | 04-03-2024 | Duration : 60 Days Submitted for HOD approval Remarks : Committee approved the adoption of the revised standard for WC during 7th meeting of MED40 |
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| 6 | WC Draft | 20-03-2024 | WC approved by HOD |
MEDC MED 40, | ------- |