guidelines for pre-monsoon activity

Infrastructure Maintenance

General Guidelines for Pre-Monsoon Activity

Document No. R4G-80-PAU-OMG-PR-002

PDV

CB PV SA

00 05-Aug-13 Issued for Use RRR PB JPK

Rev. No.

Date Reason for Issue Prepared by Reviewed by Approved by

Printouts of this procedure shall be deemed uncontrolled

Infrastructure Maintenance R4G-80-PAU-OMG-PR-002

General guidelines for Pre-Monsoon Activity

Reliance Jio Infocomm Limited Rev. 00 Issue date :05-Aug-13 Page 2 of 14

AMENDMENT RECORD / CONTROL SHEET (ACS)

Rev. No.

Date Reason for

Issue Prepared

by Reviewed

by Approved

by Details of Amendments /

Revisions

00 05-Aug-13 Issued for

Use CB/RR

PDV/PV/PB

SA/JPK New document




INDEX

Sr. No. Content Page No.

1 Purpose 4

2 Scope 4

3 Definitions / Abbreviations 4

4 Responsibilities 4-5

5 Description 5 - 13

6 Attachments 13

7 List of Records 14




1. Purpose

This document has been developed to familiarize Infrastructure Maintenance team

about pre-monsoon activity to be carried out in RJIL network.

2. Scope

This document will outline the general guidelines about pre-monsoon activity for all

telecom facilities.

3. Definitions / Abbreviations

AC Alternating Current

BB Battery bank

CMM Chief Maintenance Manager

DC Direct Current

DG Diesel Generator

HT High Tension

LT Low Tension

NOC Network Operation Centre

O&M Operation & Maintenance

OEM Original Equipment Manufacturer

PAC Precision Air Conditioning

SEB State Electricity Board

SPD Surge Protection Device

4. Responsibilities

4.1. Lead - Power and Utilities

The Lead - Power and Utilities is responsible for the technical integrity of this

procedure. The Lead Power & Utilities or his / her nominated Deputy shall be

authorized for any changes in this procedure.

4.2. Chief Maintenance Manager (CMM)

Chief Maintenance Manager (CMM) is responsible for ensuring that all activities

related to this procedure are complied with and recorded as described in this

document.




4.3. Procedure Owner

The owner of this procedure is the Lead-Power & Utilities.

5. Description

5.1. Background

Effective O&M is one of the best method for ensuring reliability, safety, and efficiency

of equipment. Pre-Monsoon activity is an important part of effective O&M. It is very

essential that Telecom facilities get inspected before Monsoon arrival as prevention is

better than cure. Problems identified at right time, with proper resolutions, save

equipment from severe damage or outage. Telecom infrastructure/facilities consist of

Electronic infrastructure (Active) and Power & Utility infrastructure (Passive). Electronic

infrastructure includes base tower station, microwave radio equipment, switches,

antennas, transceivers for signal processing, OFC equipment and transmission

equipment etc. while Passive infrastructure includes Tower, Shelter/ Telecom Room,

Air-conditioning equipment (PAC),Chillers, Transformers ,LT/HT Panel, SEB Meter,

Diesel Generator(DG), Battery Banks (BB),SEB supply, site premises etc. The Pre-

Monsoon checkup is required for telecom facilities.

Monsoon is defined as a seasonal reversing wind accompanied by rain and storm. The

Rainy Season begins in India when the South West Monsoon wind approaches, typically

first week of June and lasts till the end of September.




Pre-Monsoon activity to be carried out before the onset of monsoon. Inspection must

be done for each & every equipment as mentioned in the checklist and defects are to

be rectified to ensure a satisfactory performance during monsoon.

5.2 Effect of Monsoon on Telecom Infrastructure-

Increased risk of electrocution if the accumulated water comes in contact with

exposed live conductors and equipment.

Monsoon aids the growth of vegetation surrounding Ground based mast, which may

increase risk potential of fire hazard and electrocution.

Chances of earth fault/ leakage at cable termination/glands increases.

Water seepage in the electrical panels may cause short circuit and damage to the

equipment.

Corrosion and rusting occur due to increased humidity and moisture in environment

during Monsoon. This can cause operational failures and defects on the surface of

the equipment.

Moisture on electrical terminals, increases leakage current, insulation failure and

short circuits

Lightning strike is a potential hazard and common during monsoon. Hence lightning

path, earth flat/grid connectivity to earth pits, surge arrestors must be checked

before monsoon.

Floods can occur due to very heavy rainfall. Troubleshooting of faults can be very

difficult as accessing GBM/RT-CSS can be difficult during flood conditions. Hence

equipment to be protected from splash/rain as far as possible.

5.3 Importance of Pre-monsoon maintenance activity-

Telecom Infrastructure pre-monsoon maintenance is essential in order to:

To mitigate potential hazard of electrocution, fire, short circuit, component failure

and for the protection of our resources and personnel safety.

Preserve the Telecom infrastructure in its working condition so that the network

remains unaffected in rainy season.

Provide efficient and reliable telecom infrastructure operation.

5.4 Pre-Monsoon Activity Frequency and Records-

Pre-Monsoon Check-up is to be done at all relevant sites as per below mentioned check

sheets and Three weeks before the onset of monsoon.




Check sheets shall be retained in soft copy as per the above retention period.

Check Sheet Frequency Retention period

R4G-80-PAU-CHK-PR-009 Yearly 2 Years

R4G-80-PAU-CHK-PR-010 Yearly 2 Years

5.5 Pre-Monsoon Activity Description-

SP technician will visit the site on a pre-determined inspection date to carry out Pre-

monsoon activity in coordination with RJIL Infra Engineer and City Infra Lead. Pre-

Monsoon checks will include the inspection of facility and to take corrective measures

against the punch points observed during pre-monsoon check.

5.5.1 Pre-Monsoon Activity-GBM / RT-CSS

Pre-Monsoon activity of Ground Base Mast and Roof Top-CSS covers the inspection of

Mast, DC Rack, SEB Meter Box/Panel, Lightening protection and Earthing System, SMPS,

BB & Site premises.

A] Mast Pole (For GBM based Site)

i) Check for Mast foundation bolt tightness, rusting and repair the same.

ii) Check the Mast Civil Foundation for cracks, damages and rectify the same.

iii) Check and confirm that the mast door gaskets are in position and not damaged.

iv) Check mast door shall be closed properly so that water does not enter inside the

Mast.

v) Check and confirm that all unused cable entries are closed. The rainwater should not

enter the Mast through any cables entries.

vi) Check the closing of Multi Cable Transits-MCTs.

B] ODC Cabinet (For Roof Top-CSS Site)




i) Check for ODC foundation bolt tightness, rusting and repair the same.

ii) Check the ODC Civil Foundation for cracks, damages and rectify the same.

iii) Check and confirm that the ODC door gaskets are in position and not damaged.

iv) The ODC Door shall be closed properly so that water does no enter inside the

mast.

v) Use tarpaulin cover during PM/BM on monsoon season to avoid sudden shower and

water splash to electronic equipment.

vi) In monsoon prone area may be space heater for panels; dry silica gel pack for

electronic components can be used based on experiences to improve reliability.

vii) Check and confirm that all unused cable entries through PG Gland / Roxtec are

closed. The rainwater should not enter the ODC through the cables entries.

vii) Ensure that the alignment between ODC bays is intact & proper.

C) SMPS

i) Check that SPD cartridges provided in the SMPS are in healthy condition (green).

D) Battery Bank

i) Check any possibility of Leakage, moisture near BMS and take corrective actions to

prevent the same.

E) LIGHTNING PROTECTION & EARTHING SYSTEM

i) Check the lightning arrester continuity with the earth pit.

ii) Check all terminations in the earthing network /grid are tight and coated with

grease/moisture protecting paint.

F) GENERAL

i) Identify all underground cable joints, (both permanent & temporary) and rectify in

case any joint found week or IR value found lower than 1 Mega Ohms. Replace/

repair cables during PM/BM activities at the Facility.

ii) Check for any cracks / holes in ceiling / walls for possible seepage of water inside

building and block of the same. (Applicable to RT-ODC Site)

iii) Check about the proper drainage of water from roof and clean the drain pipes if

required.

iv) Check for previous history of flooding in the area. In case of flooding of surrounding

area, road access to facility is available or not to be envisaged. Disaster preparedness

to approach the site to be discussed with safety coordinator to be documented to

cater sudden outage of that site.




v) Conduct an Inspection of the supply feeder pillar/post of the Electric Supply

company along with their lineman and if any suspected/ vulnerable points are

noticed (hanging wire/ loose fuse wire , loose jumper wires where arcing can be

noticed easily at evening hours, nearby tree branches which may touch during storm

to be rectified with required permissions of authority.

vi) Check that poles for incoming SEB power line prior to Facility are in good condition,

guy wire properly fixed and in tension and not likely to damage in case of storm.

Take remedial action by liaising with SEB department for remedial measures. This is

important that incoming supply line to facility should be reliable and in working

condition during monsoon.

5.5.2 Pre-Monsoon Activity-AG3/AG2/SAG2/AG2+OTN/ILA Site

Pre-Monsoon activity of AG3/AG2/SAG2/AG2+OTN/ILA covers Site the inspection of

Electrical Panel Room/DG Room, Transformer, SMPS, Battery Bank, DG, Shelter,

Security Room and Earthing System.

A) Electrical panel room / DG Room

i) Plug all holes/ leakages of the Electrical Panel & DG Room. Check for cracks, old joint

damage. Also check for any water accumulation nearby Electrical Panel & DG Room.

ii) Check that the water accumulated in the cable chambers do not get entry through

the electrical pipe/ducts, Check and confirm that all unused cable entries, duct ends

are closed by puff sealants.

iii) The switch room shall be closed securely to prevent entry of rodents / birds .

iv) During the first rain check for any water leakage/seepage through the expansion

joint /cracks between section of slab. Ensure no water accumulation takes place

inside the room. Ensure drainage is clear. Provide the proper drainage.




B) Transformer

i) Check the condition of silica gel in the breather and reactivate if found color changed

to white/pink. Also check the breather for damage/crack of the container & O ring.

ii) Ensure the presence of rainwater drainage facility from the transformer bay &

nearby areas.

iii) Ensure that the terminal boxes of radiator fan motors (if provided) and instrument

connections are sealed properly.

C) SMPS

i) Check the SPD Status is in Healthy condition (green color) , replace if found defective

(red color).

ii) Check all the cable glands approach to SMPS and close the all gland Openings.

D) Battery Bank

i) Check any water seepage/sign of water/ moisture on Battery bank Module or CBMS

Unit and take corrective actions to prevent the same.

E) DG

i) Check DG Canopy Status & ensure no water seepage into DG Set & in Diesel Tank.

ii) Check cleanliness inside DG Canopy.

iii) Check the fill cap is in place and with proper seal/O ring to prevent water entry.

iv) DG fitted in basement to be provisioned with sump pump, to be in working

condition.

v) DG foundation to be in sufficient height, wherever possible, to avoid water entry

inside DG canopy (to envisage during project work).

F) Lighting/Fixtures

i) Check and confirm that water does not get into the fixtures.

ii) Ensure that all cable entries are tight & sealed to prevent water seepage.

iii) Cables entering from side and top shall be sealed adequately.

iv) Check and confirm that unused entries in the junction boxes are sealed & Lighting

junction boxes installed outside shall be adequately covered

v) Check and confirm that the glass in well glass bulkhead fitting is intact.

G) Electrical Panels

i) Cable entries shall be sealed completely.

ii) Check and confirm that the door gaskets are in position and not damaged.

iii) For panels mounted on skids, ensure provision of water drainage.




iv) Check rain water sheds are intact. Before start work during rain, use tarpaulin cover

to avoid sudden splash/shower water entry to SMPS / Electrical equipment

H) Facility buildings

i) Wherever the lighting board is located on outdoors/ wall, ensure that those are

properly closed and switchboards are doubly earthed.

ii) If there is any seepage on the wall where light/fan control switches are installed,

take corrective action.

Caution: Do not touch a wet switchboard without isolating the incoming supply.

I) Tools tackles/equipment

i) Dewatering pumps wherever installed shall be in working condition.

ii) Ensure availability of Torch, spare new/charged battery, Emergency Hand Lamps for

temporary lighting during power failure.

iii) Ensure availability of Polythene sheet / Tarpaulin for any emergency covering over

panels

iv) Check PPEs like (Earth Discharging device, hand gloves, helmet etc.) are kept inside

shelter/room. No maintenance or inspection allowed with bare foot as per safety

norms.

J) Stores

i) Transformer Oil drums shall be kept on raised ground/on sleepers. The drums shall

be kept horizontally with their caps parallel to the ground.

ii) Panel boards shall be stored under cover alternatively tarpaulin shall be provided.

iii) Batteries to be kept over wooden board/pallets. Do not open battery cartons unless

require to charge/send to site for installation. BMS cards are prone to

damage/malfunction in presence of moistures. Place silica gel pouches inside carton

to keep dry atmosphere.

iv) Ensure electrical materials, motors, battery, switchboard if stored in the open space

are adequately covered with double cover of tarpaulin and plastics. Those to be

securely tied with ropes and placed over wooden platform. Avoid low flood prone

area to store equipment. Ensure the area does not get waterlogged during rain and

adequate drainages are maintained.

K) Telecommunication system & Fiber-

i) Check and confirm that all underground cable joints are identified & Closed

ii) Unused cable openings in the Telecom equipment are plugged/sealed

iii) All tag block boxes shall be properly closed.




iv) All entries for fittings of Optical Fiber / Duct / RF Cable are properly sealed with

proper size of glands. Use puff sealant wherever required.

v) Water seepage/travel along with RF/fiber cable to expensive equipment are very

common. Take preventive measures to avoid such issues during this monsoon

preparedness.

L) Security Room

i) Control panels of electrically operated gates shall be protected against rain.

ii) Any lighting switchboard or meter box installed on the outside to be protected with

rain shed and plastic cover suitably.

M) Lightning Protection & Earthing System

i) Check all terminations at earth-pits and in the earth grids are intact,nut bolt joints

are tightened, not corroded. Rusting to be cleaned and Zinc patch to apply wherever

required.

ii) Check the lightning arrester continuity with earth pit.

iii) Check individual earth pits for loose connection, pit covers, wire mesh cleanliness.

iv) Check earth pits near transformer for double earthing & grid connectivity.

v) Check earth resistance of each earth pit & ensure it is as per RJIL Standard.

N) General

i) Identify all underground cable joints, both permanent & temporary and rectify in

case water logging nearby. Use proper water proof tape & sleeves. Use RIL approved

joint kit to avoid failure when comes in contact with water.

ii) Air filters are of HVAC shall be cleaned before the monsoon.

iii) Adequate precautions and care to be taken, while cleaning the drains, as in certain

places cable might cross the drains.

iv) Check about the proper drainage of water from roof and clean the drain pipes if

required.

v) Check storm water drains for level, clean / clear leaves, debris.

vi) Check in case of flooding of surrounding area, road access to facility will be there.

vii) Check for previous history of flooding in the area and plan for raising the foundation

of ODC or DG set, Pre fab shelter etc. wherever High Flood Levels are identified and

marked.

viii) Prepare the budget report get sanction and complete the activity before the monsoon.

ix) Conduct a pre-monsoon Inspection of the supply feeder pillar/post of the Electric

Supply company along with their lineman and if any suspected/ vulnerable points are

noticed ( hanging wire/ loose fuse wire , loose jumper wires /,joints which are arcing




can be noticed easily during dark hours, tree branches hanging closely to trim with

proper permissions wherever rectified.

x) Check for Pole/Tower foundation bolt tightness, rusting and repair the same.

xi) Clean crawling vegetation and trees near transformers and substation live

equipment, EB Panels which may create short circuit/earth leakage.

xii) Replace/repair cables which are problematic or have insulation partially damaged,

during planned PM activities at the Facility.

xiii) Check the Facility Wall Boundary / Fencing Status for any damaged condition ( if

applicable ) or water logging near walls, rectify accordingly

xiv) Take Shelter Roof Top Water Test (If required)

xv) Check that there is no water accumulation in the Facility that might get entry into

electrical installations such as electrical room cable trench, junction box bottom

cable way, cable ways, DG set.

xvi) Check that poles for incoming SEB power line length prior to Facility are in good

condition. Guy wires to be in tension to keep the pole straight to avoid damage in

case of storm, heavy rain. Raise matter with SEB for remedial measures. Some faults

have also been experienced due to tree falling on SEB lines. Patrol the supply line

before monsoon and if required permission to be sought from local authorities to cut

the branch which may touch/disturb power supply towards facility.

You are the best judge of your facility. Use the checklist, your experience to mitigate the

risk with Monsoon preparedness to achieve best reliability of Telecom assets.

5.6 Tools Required

i) Tool Kit

ii) Digital Multi Meter (Calibrated)

iii) Earth tester (calibrated)

5. Attachments

Nil

6. List of Records

Check sheet Description

R4G-80-PAU-CHK-PR-009 Check sheet for Pre-Monsoon Activity for GBM/RT-CSS Facilities

R4G-80-PAU-CHK-PR-010 Check sheet for Pre-Monsoon Activity for AG3/AG2/SAG2/AG2+OTN Facilities




2013-08-08T18:02:[email protected]




2013-08-08T18:17:36+0530PD.Vaidya



guidelines for pre-monsoon activity

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