system modification procedure forms 1) 2) technical ... · procedure title: system modification...

PROCEDURE TITLE: SYSTEM MODIFICATION PROCEDURE PROCEDURE NO: TRN/MOD/0001 REV 01

SYSTEM MODIFICATION PROCEDURE FORMS 1) Trains Risk Matrix 2) Hazard Log – Technical / Operations Risk 3) Hazard Log Summary 4) Request For Modification (RFM) 5) Application For Modification (AFM) 6) Completion Of Modification (COM) 7) AFM Review Form

This is an editable copy of SYSTEM MODIFICATION PROCEDURE FORMS and is electronically CONTROLLED on SMRT Intranet. Any copy of this Document obtained from other sources is uncontrolled and should be checked against the latest version on SMRT Intranet prior to use.


This Document is electronically CONTROLLED on SMRT Intranet. Any copy of this Document obtained from other sources is uncontrolled and should be checked against the latest version on SMRT Intranet prior to use.

Trains Risk Matrix

Table 1 Mishap Severity Level

Level Personnel & Environment

Service / Asset Reliability Financial

Severe 5

Fatalities and/or multiple severe injuries and/or major damage to the environment.

30 minutes delay to train

service.

Extended failure resulting in

major interruption to

service.

Exposure ≥ S$15M

Critical 4

Single fatality and/or significant damage to the environment.

20 minutes ≤ 30 minutes delay to train service

Interruption to service for an entire line.

S$15M > Exposure > S$10M

Significant 3 Severe injury and/or minor damage to the environment.

15 minutes ≤ 20 minutes

delay to train service.

Interruption to service in

affected area within a line.


Moderate 2

Minor injury and/or significant threat to the environment.

2 minutes ≤ 15 minutes delay to train service.

Reduced or disrupted service.


Minor 1

Possible minor injury / no injury.

≤ 2 minutes delay to train service.

Brief delay to normal service.

Exposure < S$1M

Reference: SMRT Trains Risk Management Procedure, Section 6.3

Table 2 Mishap Likelihood Level

Level Qualitative Description Accident Frequency

Expected 5 Likely to occur frequently. The hazard will be

continually experienced. ≥ 1 accident per 100

hours

Likely 4 Will occur several times. The hazard can be expected to

occur often. 1x10² hours < 1 accident ≤

1x10⁴ hours

Maybe 3 Likely to occur several times. The hazard can be

expected to occur several times. 1x10⁴ hours < 1 accident ≤

1X10⁵ hours

Less Likely 2 Likely to occur sometime in the system’s life cycle. The

hazard can reasonably be expected to occur. 1x10⁵ hours < 1 accident ≤

1X10⁶ hours

Almost Remote

1 Unlikely to occur but possible. It can be assumed that

the hazard may exceptionally occur. 1x10⁶ hours < 1 accident ≤

1X10⁸ hours

Reference: SMRT Trains Risk Management Procedure, Section 6.3



Table 3 SMRT Risk Matrix

Severity / Likelihood

Almost remote

Less Likely

Maybe Likely Expected

1 2 3 4 5

Severe 5 5 10 15 20 25

Critical 4 4 8 12 16 20

Significant 3 3 6 9 12 15

Moderate 2 2 4 6 8 10

Minor 1 1 2 3 4 5 (Mishap Risk Assessment Value = Severity x Likelihood)

Table 4 Mishap Risk Categories and Acceptance Levels

Mishap Risk

Assessment Value Category Description Acceptance Level

15 – 25 A Intolerable

(High Risk)

Unacceptable

8 – 12 B Undesirable

(Serious Risk)

SSB (Trains) Approval –

FTA/FMECA* to be performed

3 – 6 C Tolerable

(Medium Risk)

SSB (Trains) Approval

1 – 2 D Negligible

(Low Risk)

CMO Approval

*FTA – Fault Tree Analysis *FMECA – Failure Mode, Effects and Criticality Analysis



MS: Mishap Severity ML: Mishap Likelihood RV: Risk Value (MS x ML)

Prepared by: Signature: ________________ Date: ________________ (Name of Applicant / Department)

Accepted by: Signature: ________________ Date: ________________

(Name of HOD of Applicant / Department)

* Refer to SMRT Work Safety Manual, CORP Manual01_WSM, Section C

Hazard Log – Technical/Operations Risk (To submit workplace safety risk assessment* separately)

Revision No.:

____

Ref No

Operation Mode

System Associated Subsystem

Hazard Description

Hazard Cause Hazard Effect

Initial Risk Evaluation Mitigation

Measures

Residual Risk Evaluation

Additional Recommendation /

Remarks MS ML RV MS ML RV



Hazard Log Summary

Mishap Risk Level Hazard Count

Intolerable

Undesirable

Tolerable

Negligible

Total

Severity Category Likelihood Level

Almost remote Less Likely Maybe Likely Expected

1 2 3 4 5

Severe 5

Critical 4

Significant 3

Moderate 2

Minor 1

NOTE: Fill the hazards count into the respective boxes



REQUEST FOR MODIFICATION

RFM NO:

PART 1 MOD REQUEST (TO BE FILLED BY ORIGINATOR)

Name:

Designation: Signature/Date: (Executive Engineer & Above)

Department:

MOD Title:

Funds for MOD Approved: Yes No Cost Center / Authority:

Target Starting Date:

/ /

(DD/MM/YYYY)

Target Completion Date:

/ /

(DD/MM/YYYY)

PART 2 MOD CO-ORDINATION (TO BE FILLED BY CO-APPLICANT)

Name:

Designation: Signature/Date: (Executive Engineer & Above)

Department:

Consideration given to effects on all system

Acceptance of modification(s) by user and affected parties

Agreement from affected parties to raise AFM(s) for all changes arising from this modification

Yes No

Yes No

Yes No

Details of Co-ordination:



APPLICATION FOR MODIFICATION

AFM NO:

PART 3 MOD PROPOSAL (TO BE FILLED BY APPLICANT)

Name: Designation: Signature/Date: (Executive Engineer & Above)

Department:

Hazard Log Risk Category:

Category B Category C Category D

Modification Proposal:

Reason(s) and Justification(s):

Is MOD a trial scheme Yes No

Is MOD on LTA Asset / Infrastructure Yes No

Tick box(es) below to indicate updates required after modification completion: (Submission of relevant document is required as part of MOD completion)

Operation Manuals Specifications (for spares, equipment)

Maintenance Manuals Endorsement by relevant Authority, PE

Training Manuals *Work Instructions (method, frequency, working tool & maintenance period)

As-Built Drawings Others : _______________________

*Remarks: require the submission of Trains Maintenance Review Board (TMRB) request

SMRT Coordinator (Mandatory to be completed for AFM raised by LTA, Private Developer, SMRT Experience and Services)

Name: Designation: Signature/Date: (Executive Engineer & Above)

Remarks:




AFM NO:

PART 4 TECHNICAL ENDORSEMENT (FOR SMRT & LTA ONLY)

SMRT TECHNICAL ENDORSEMENT

By Head of Division / Business Unit

Approved Rejected

Name:

Designation:

(VP / PF)

Remarks:

Signature/Date:

SMRT SAFETY & INSPECTORATE (SSI) ENDORSEMENT

Approved Rejected

Name:

Designation:

(Deputy Director & Above)

Remarks:

Signature/Date:

LTA TECHNICAL ENDORSEMENT and Approval on Acceptance of Safety Analysis

By RAOM / ASI

Approved Rejected

Name:

Designation:

(Deputy Director & Above)

Remarks:

Signature/Date:




AFM NO:

PART 5 SMRT CMO APPROVAL (FOR CAT D MOD ONLY)

Approved Rejected

Name:

Designation:

Remarks:

Signature/Date:

PART 6 SSB(Trains) CHAIRMAN APPROVAL (FOR CAT B & C MOD ONLY)

Change in Risk Category: Yes No (If Yes, will require to update hazard log for AFM Submission)

Final Risk Category:

Category B Category C Category D

SMRT Safety Board (Trains) Approval – Meeting # & Date:

Approved Rejected

Name:

Designation:

Remarks:

Signature/Date:



COMPLETION OF MODIFICATION

COM NO:

PART 7 MOD COMPLETION (TO BE FILLED BY APPLICANT)

Date MOD Started:

/ /

(DD/MM/YYYY)

Date MOD Completed:

/ /

(DD/MM/YYYY)

Confirmation on updating of documents, drawings, specifications & etc. (Modification Leaflet – to be completed and attached)

Yes No

MOD Checked by (Qualified SMRT Staff Only): Name: Designation:

(Executive Engineer & Above)

Date:

Results/Recommendations:

PART 8 MOD ACCEPTANCE (COMPLETE EITHER PART A OR PART B)

PART A

MOD Accepted & Completed

MOD Rejected & System Normalised

MOD Aborted & System Normalised

Others: _______________________

PART B (for AFM on trial Mod only)

Trial Accepted (New AFM required for full scale MOD)

Trial Aborted & System Normalised If Trial Accepted, is full scale MOD required?

Yes No

Name: Designation: Signature/Date:

(Applicant’s or SMRT Coordinator’s Branch Manager & Above)

PART 9 SSB(Trains) SECRETARY ACKNOWLEDGMENT

MOD Approved MOD Rejected

Name: Secretary: Signature/Date:

Reason for Rejection:

(Use AFM No.)



COMPLETION OF MODIFICATION

Page _____ of _____

AFM No:

MODIFICATION LEAFLET (TO BE FILLED BY APPLICANT)

Name:

Designation: Signature/Date:

(Executive Engineer & Above)

Department:

Item No.

ADVICE FOR UPDATING (Changes and Updates for Material, Specifications,

Drawings & Documents, etc.)

Date Issued

Name of Receiving

Party

Signature of

Receiving Party / Date

Received

Completion Date

Proposed Actual

*Insert multiple modification leaflets if necessary.



AFM REVIEW FORM

AFM NO. Date :

Modification Title :

Department / Branch :

Reviewed By : Name / Signature Date :

S/N Document / Drawing No.

Comments

Conclusion Is there any objection to the modification? Yes / No