Tele: 011- 23018523 Fax: 011-23019109

No.86440/Misc/Policy/E4 (U3)

E-in-C's List 'A'

Engineer -in- Chief's Branch Military Enginner Services Dte of Works E4 (U) Sub Dte of Utilitiy Kashmir House, Rajaji Marg New Delhi-110011

,2 4. May 2019

Guidelines for Planning and Design of Sewer Networks & STP's.

Ref the following Policy letters issued by this HQ :- (a) HQ letter No. 61748/PL/E4 (U) dt 06 Jun 2014. (b) HQ letter No. 86435/Misc/E4 (U3) dt 19 May 2017. (c) HQ letter No. 86440/Misc/Policy/E4 (U3) dt 01 June 2018. (d) HQ letter No. 62888/Gen-Misc Corres/E-4 dt 20 Aug 2018.

2. It is noticed that the DPRs of sewer network and STP are forwarded directly to this HQ through the consultants and in many cases it is found that detailed scrutiny is not done at CE Zone level. It is once again requested that before forwarding the DPR to this HQ, proper scrutiny to be done at CE Zone level and certificate duly signed by Dir E/M / Dir Plg as per our instruction at para 1 (b) will be forwarded. No DPR to be forward through consultant.

3. PI ack.

(Abhishek Goel) Col Dir (PHE)

Ends:- As Above For E-in-C

Copy to:-

E2W (PPC) E-in-C Br

Automation Cell

for uploading on MES Website E-in-C Br

Tele: 23016708 Fax: 23019113

61748/PLIE4-(U)

List `A'

Am ED pi

Sub Dte of Utility (E-) Dte of Works, E-in-C's Branch lntegrated HQ. of MoD (Army), Military_Frigineer Services Kashmir House, Rajaji Marg, New Delhi-110011

Of) June 2014

0 ME54 -51 ORD-Yilic;f1 (395 Fomt-01)

1. Further to amendments issued vide this HO letter No 61746/PL/E,1(Ll) Dt 05 Jun 2003,to Para 60.7 of MES Standing orders.

2. Following amendments are further issued to ibid letter:-

- All schemes of electric suiaply, water supply, sewage disposal, fire fighting and central air conditioning will be submitted to following engineer authorities for prior technical scrutiny. Vetting of central sewage system' and central air conditioning system byF qualified officer of respective field of. specialization and vetting of the fighting scheme by Fire adviser of Ministry of Defence must be ensured ,wherever applicable:-

(a) Schemes costing upto Fls 22 Lace (b) Schemes costing from 22 1_.a.-3 upto 120 Liy)s (c) Schemes costing over Re 12r i..acs

DLL- All original schemes of -7:r.....etric supply, water disposal , firefighting and central air conditioning will be following engineer authorities for prior technicei scrutiny fighting schemes J' Fire adviser cif of Defence ensured !wherever appiicable:-

(a).. Schemes costing upto Rs 50 Leos Schernes costing from 50 Lacs upto 250 Lacs

\:(9)' Schemes costing from 25(ii..acg3 upto 500 Lacs (Aril( Wks Only)

„/(d) Schetines costing over P' 500 Lacs(Army Wks), over 250 Lacs Navy and A'

pl ark receipt.

OWE CE Zone

supply, sewage submitted to vetting of lire

must be

OWE - CF. Zone

CE Command

r: ..in-rte Branch

►9 /

‘ ,"le4-•=14146-;:i

Tel : 011 23015303 ( Fax : 011 23019113

Sub Dte of Utility (E4) Dte of Works,

Engineer-in-Chiefs Branch Kashmir House, Rajaji Marg

New Delhi 110011

86435/Misc/E4(U3) 1 q May 2017

E-in-C List 'A' & '13'

Guidelines for Planning and Design of Sewer Networks and STPs

1. On perusal of DPRs for PHE schemes submitted by various zones it is analysed that there is a need to issue guidelines on certain design and planning aspects so as to facilitate faster clearances of PHE projects by this HQ. The consultants hired by Chief Engineers are mostly having experience of working in normal city like conditions and they tend to ignore the peculiarities in Defence establishments in their DPRs.

2. Low population densities, fluctuating populations, high sanitation standards, remote locations, large unpaved areas, stringent discharge requirements and extreme climatic conditions make planning of PHE schemes a challenge for MES planners and designers.

3. List of issues which get neglected by consultants has been prepared and the same is discussed in subsequent paragraphs. Suggestions to include these issues in our schemes have also been given so that in future schemes, these issues are adequately addressed.

(a) Ground Data Required. Ground data required for planning of PHE schemes is reproduced at appendix 'A' to this letter. It is important to note that every data required has relevance in the process of planning or design.

(b) Calculation of quantity of sewage. Scale of Accommodation Appendix 'C' must be used for working out water requirement and subsequently to calculate the sewage generated. Ingress of ground water must be added as per site conditions and in accordance with Manual on sewerage and sewage treatment systems (Manual). It is important to note that if DWCPE sewers are tb be used the ingress of ground water should be assumed on lower side while with RCC NP3 sewers it should be of mid-range. In either case total ingress should be less than 10% of sewage generated.

(c) Storm Runoff. In MES central sewage sewers are not designed to carry storm runoff. Open road side drains are provided for storm waters and are therefore designed separately.

(d) Layout Plans and Contours. Consultants tend to ignore importance of contours and layout plans for planning of network of sewers. Preferably layout plans should be prepared on scale so that entire station is easily covered in one AD drawing. In addition zoomed up detailed plans at scales 1: 1000 on A3 sheets may be prepared along with key plans for ease of understanding and readability. Contours, existing networks, water supply lines, underground cables and other services should be marked. Details of existing sewers including size of sewers, load and invert level are essentially required for synchronization with new schemes. Colour schemes in line plans should facilitate easy understanding and reading. Alternately SP-46 of Bureau of Indian Standards may be followed for preparation of engineering drawings.

1j 5

(e) Higher Peak Factor for discharges. . Hitherto, in ,MES a pea( factor of 4 is being used for population up-to 25,000. However, for very small populations say up-to 500 peak factor of 4 is unrealistic. Literature survey on Internet was done and reference by IIT Kharagpur was found where lIT in their web courses have recommended peak factor of 6 for small populations. It appears to be realistic keeping in view the fact that large variation in discharges are observed for very small population in MES also. Therefore, for very small populations peak factor of 6 is recommended in MES for population up-to 500. It will result in substantial saving in cost of excavation for laying of sewers.

(f) Automatic Flushing Tanks(AFT). AFTs are provided to generate self-cleansing velocity in gravity sewers however, these are difficult to maintain and requirement of additional water supply makes them undesirable. Therefore, use of AFT is proposed to be restricted only for very small populations. Alternately treated sewage through dedicated pressure lines be used for flushing of sewers. However, precautions to avoid cross connections of these lines must be ensured thus control valves should have detachable spindles and all pipes/fixtures should be of violet colours.

(g) Specifications for Hot Climates. In case of hot climates the self-cleansing velocity should be taken as 0.8 m/s instead of 0.6 m/s to minimize formation of slimes and H2S gas in sewers. For this purpose a station having average daily temperature more than 30°C for at least three months may be defined as hot climate.

(h) Specifications for Extreme cold climates. For extremely cold climates the insulation of sewers and STP is vital. ED 2016 caters for additional cost of these measures @ 8% increase per 5° C fall in average ambient temperature for more than three months below 20° C is allowed.

0) Technologies of STPs in MES. In MES MBBR has been accepted as standard technology for STPs of 100 KLD capacity and more. However, there is no embargo in use of other cost effective technologies having matching foot prints, which are approved by various central government agencies. In such cases performance assurance for complete life cycle of STP should be obtained and there should not be any exclusive dependence on OEM, for chemicals or Biomass, after 5 years of M&O.

(k) Decentralized sewage systems. These days, decentralized sewage systems are being preferred as cost of transport of sewage and that of treated effluent is reduced. In MES since the size of STPs is generally much small in comparison to civil setups, therefore it may not be economical to use decentralized plants in every case. Therefore, Zonal CEs should ask consultants for planning different options in totality including cost of transportation of sewage and that of treated effluent for reuse. Cost-benefit analysis for all options should be done by consultant to facilitate Zone to select most efficient system.

(I) Reuse and final disposal of treated effluent. Unless there are compelling reasons, reuse of sewage will be done to reduce demand of.fresh water. Various possible non-potable applications treated effluent are i.e. arboriculture, irrigation, fire fighting, washing of pavement/roads, flushing of toilets, construction activities and development of water bodies. To avoid accidental cross connections with fresh water lines, measures as mentioned in para (f) ante are to be ensured. Parameters for disposal and reuse will be in accordance with State Bye-laws, however, suggested values are given at Appendix `B' to this letter. These days some SPCBs have made stringent standards for disposal and have started asking for zero discharge concepts. In such situations, it will be appropriate to have a water body of not more

= s 2 I 5 ‘/°

ut"

Mal11111-

than 2.0m depth in the station where treated effluent can be stored. The percolation, and evaporation from water bodies can be designed as final disposal. These water bodies can also act as storage tanks for other reuses. To avoid reappearance of bio mass, fountains/ cascades must be provided.

(m) Vetting of DPRs. It has been observed that DPRs prepared by consultants are not scrutinised by many zonal CEs and consultants are directed to this HQs for clearance of DPRs. Vetting of DPRs by engineering colleges is not done seriously as there is no involvement of department causing delays due to inflated or technically unsound reports. This practice is not correct. Henceforth following procedure may be adopted.

(i) Consultant submits DPR with various proposals to Zonal CE. (ii) CE gets validation of ground data by concerned GE. (iii) Proposals are examined at zonal level for feasibility on ground. (iv) One proposal be selected for execution. (Please refer para 'k' ante). (v) Selected proposal be got technically vetted by consultant from IIT/ NIT/ ADG

(D&C) /Nominated PHE expert of Comd or E-in-C's Br. (vi) Revised DPR duly incorporating the suggestions of vetting agency to be

submitted by consultant. (vii)Such schemes once vetted by IIT/NIT/ADG(D&C) or PHE expert will not require

technical check at E-in-C's Branch, however, financial vetting as per practice in vogue will continue.

(n) Accountability of OEM. OEM or vendor will not be accountable for hydraulic design aspects of STP if design is done by consultant or department unless during tendering process suggestions of OEM or vendors on design related issues have been incorporated in 'Q' bid. Services of consultant may be continued during execution stage also to ensure implementation of workable STP to have sound technical decisions on any unforeseen issue. A clause to this effect should be included in tender to avoid unnecessary litigation at a later date.

4. Please ensure that above guidelines are followed for all PHE schemes.

5. This has approval of DGW.

1.

(S K Arora) Dir (PHE)

For E-in-C Copy to :-

DG MAP ADG(D&C) Pune Jt DGW (Contracts) DDG PPC DDG Design

3 5

Appendix 'A' to Sub Dte of Utility, pG(Wks), E-in-C's Br letter No 86435/Misc./E4(U3) dated 19 May 2017

LIST OF DATA REQUIRED FOR PLANNING AND DESIGN OF STP SCHEMES

1. Ground Data a. Layout plan of Station with existing network of sewers.

b. Contours at 0.5 in interval superimposed on layout plan. Contours should be linked to

nearest Survey of India permanpnt bench mark.

c. Location of all present and proposed buildings with sewage load.

d. Proposed location of STP and reuse of treated wastewater.

e. Location, Depth and NOC regarding use of Municipal sewer.

f. Plans showing water distribution network, under cables and other UG services.

g. Depth of water table and Soil characteristics including SBC up to 10 m depth or till hard

strata is achieved at a grid of 500 sm with at least one point at location of STP.

h. Seismic zone of region.

i. Highest intensity of rainfall and HFL for 50 years at STP site.

2. Raw Sewage Characteristics The best way to ascertain the sewage characteristics is to conduct the composite

sampling once in a week for diurnal variation on hourly basis from the existing sewage outfall.

Considering four week month, three samples are to be taken on weekdays and the fourth

sample on off day i.e. Sunday. Sampling should be done for at least one month during lean

flow season. Parameters to be tested are listed below.

In the absence of actual sewage outfall the parameters to be assumed are mentioned

at table below. However, design should be re-verified once actual data is available.

RAW SEWAGE CHARACTERISTICS IN ABSENCE OF ACTUAL DATA

SN Parameter Value Remarks

1 BOD 200 mg/L For hot climates = 300 mg/L

2 COD 350 mg/L For hot climates = 450 mg/L

3 SS (Total) 250 - 300 mg/L

4 Nitrogen (Total) 50 mg/I

5 Phosphorus (Total) 7.0 mg/I

6 Temperature ambient

7 Coliforms (Faecal) 105-106/ 100 ml 8 Oil & Grease 20 - 30 mg/I (for EME work shop > 50 mg/I)

9 Chlorides & Sulphates As per water sample.

10 Heavy Metals Only if industrial contamination is expected.

11 pH 6.5 — 8.5

12 Colour and Odour Actual

4 1 5

Appendix 'B' to Sub Dte of Utility, DG (Wks), E-in-C's Br letter No 86435/Misc/E4(U3) dated 19 May 2017

PARAMETERS FOR VARIOUS REUSE OF TREATED SEWAGE

SN Parameter (2) Unit (3) Arboricultur e/ Golf course, (4)

Irrigation for non- edible crops (5)

Toilet Flushing (6)

Fire Fighting (7)

Eco lakes (8)

Construction Activity (9)

1 pH 6.5 — 8.3 6.5 — 8.3 6.5 — 8.3 6.5 — 8.3 6.5 — 8.3 6.5 — 8.5 2 TDS mg/I 2100 2100 2100 2100 2100 < 3000 3 Turbidity NTU <2 As arising <2 <2 <2 Please 4 TSS mg/I < 10 30 < 10 < 10 < 10

refer para 5.4 of BIS

5 Temperature °C Ambient Ambient Ambient Ambient Ambient 456.

6 Oil & Grease mg/I 10 10 10 Nil nil

7 Res. Chlorine mg/I > 1 Nil > 1 > 1 > 0.5

8 Total Kjeldhal Nitrogen mg/I 10 10 10 10 10

9 BOD mg/I 10 20 10 10 10 10 COD mg/I As arising 30 As arising As arising As arising

11 Dissolved Phosphorous mg/I 2 5 1 1 1

12 Nitrate Nitrogen as N mg /I 10 10 10 10 5

13 Faecal Coliform

MPN/ 100 ml nil 230 nil Nil nil

14 Hggs

elminthic E count/I As arising <1 As arising As arising As arising

15 Colour Colourless As arising Colourless Colourless - Colourless

16 Odour No foul No foul odour odour

No foul No foul odour odour

No foul odour

17 Helminth Egg <=1 egg/L As arising <=.1 egg/L <=1 egg/L <=1 egg/L 18 Sulphates mg/L As arising As arising As arising As arising As arising < 400 19 Chlorides mg/L As arising As arising As arising As arising As arising < 500 20 Acidity mg/L As arising As arising As arising As arising As arising < 50 mg/L

Type of final treatment normally required. (Actual treatment may vary as per site condition)

Tertiary treatment

Secondary treatment + Filtration + Disinfection

Tertiary + Ultra Tertiary

treatment Filtration

Tertiary + continuous aeration.

Tertiary treatment

Z /A fq

5 I 5 -

Tele: 011- 23018523 Fax: 011-23019109

Engineer -in- Chief's Branch Dte of Works E4 (U) Sub Dte of Utilitiy Kashmir House, Rajaji Marg New Delhi-110011

No.86440/Misc/Policy/E4 (U3) 1 Jun 2018

E-in-C's List 'A' & 'B'

Obtaining NOC for STP/ETP From State Pollution Control Boards (SPCB)

1. Further to our letter No 86435/Misc/E4 (U3) dated 19 May 2017.

2. The disposal of treated wastewater is of serious concern be it for reuse within or disposal to ponds / streams / nallah / river / land or to a municipal sewer. This affects the sustainability of the local environment.

3. As per Water (Prevention & Control of Pollution) Act 1974 'Section 24' & 'Section '25' prohibit the disposal of wastewater directly into the environment. It is mandatory to obtain two stage NOC ie firstly 'Consent to establish' at the Board Of Officers stage before the issue of adm approval and secondly 'Consent to operate' before commissioning in accordance with the State/Urban Local Bodies Bye-Laws and renewed periodically.

4. This has the approval of E-in-C.

(Naresh Sharma) Col Dir (PHE) For E-in-C

Copy to:-

ADG (LWE), QMG Branch HQ IDS / AMPH & SF Ops Integrated HQ of MoD (Army) PDW, NHQ PD (Works), Air HQ HQ Coast Guard ADG (D&C), Pune

Internal:-

TS to E-in-C. TS to DGW, DG MAP, DDG Design, Jt DGW (Contracts), DDG PPC, E2W (Army), E2 W (Navy), E2W (Air), E-6 (Arch)

A

ele: 011-23019109 Fax: 011-23019109

No. 62888/ Gen-Misc Corres /E4

E-in-C's Branch List 'A' and 'B'

Fax/Post Engineer-in-Chief's Branch Military Engineer Services Dte of Works Sub Dte of Utility Kashmir House, Rajaji Marg New Delhi-110011

2.0 Aug 18

PREPARATION OF AEs FOR UTILITY SERVICES

1. Though a plethora of policies/instructions already exist for planning and designing of utility services which have been stressed upon by this HQ from time to time, but still the quality of BPs and AEs received in this HQ are far from satisfaction. In this connection our letters No 61748/PL/E4 (U) dated 05 Jun 03 and 61748/PL/E4 (U) dated 17 Jun 11 may be referred. Moreover, the documents like NBC code, IS codes, STEC pamphlets and TIs are not being followed in true spirit.

2. Some of the mistakes observed during the scrutiny of AEs at this HQ are as under:-

(a) The basic input data for electric and water supply ie electric load and water

requirement is either incorrect or even not found enclosed at times.

(b) The unscaled site plans are attached without showing existing and proposed

services in different colors.

(c) Head loss and voltage drop calculation are not being enclosed.

(d) Air-conditioning load is not calculated properly resulting into severe effect on

total electric load requirement of the project.

(e) The CFEES report for fire fighting and CGWB report for bore well are not found

enclosed

(f) Estimates from the concerned civil agencies/departments are not found

enclosed.

3. Similarly, the common mistakes are observed as under during scrutiny of sewer lines and Sewage Treatment Plants (STPs):-

(a) The criteria for self-cleansing velocity is not adhered to.

(b) Incorrect condition of initial load for various sections, at the start of sewer are

considered. Contd...2/-

-2-

(c) No cognisance is paid towards contour plan while planning sewer network.

(d) Hydraulic design details of sewer and STPs are not forwarded.

(e) Huge unit size are planned without paying attention to Hydraulic Retention Time

(HRT), media sizes etc.

(f) Oxygen for aeration is calculated instead of air calculation.

(g) Long stretches are proposed involving large number of Sewage Pumping

Stations (SPS)/Lift wells.

4. Due to above mentioned shortcomings, considerable time is wasted on correspondence related to the observations/replies till their rectification which not only invites criticism from staff authorities but also puts CEA in embarrassing situation at times. In order to streamline and to expedite submission of AEs to CFA, checklist/ guidelines are attached at Appendices `A' & `B' which are very important for sound design of utility services and to adhere the time frame.

5. Keeping the above aspects in view and to ensure proper preparation, scrutiny and submission of AEs, a certificate duly signed by Director E/M on the format enclosed at Appendix 'C' is to be forwarded to this HQ along with AEs.

6. Please acknowledge the receipt and ensure that these instructions are disseminated up to JE level.

(Sanjay Sharma, IDSE) SE Offg Jt DGW (U) For Engineer-in-Chief

Encls:- ( (.1 Sheets)

Copy to:-Internal

E2W (PPC)

E2W (Army)

E2W (Navy)

E2W (Air)

DPR (Cell)/Spl Proj

Appendix `A' (Ref Para 4 of E-in-C's Br letter No. 62888/ Gen-Misc Corres /E4 dated 20 Aug 18)

CHECK LIST/GUIDELINES FOR PREPARATION OF E/M ESTIMATES

1. General Points

(a) The AEs are to be priced on ED and SSR. The items which are not available in ED and SSR are to be priced on market rates duly supported with price list / quotation. Rates from sanctioned jobs can also be adopted in exceptional cases.

(b) Market variation to be applied over SSR is circulated quarterly by the CE Zones and communicated to all concerned. The same should be applied except some special cases where higher percentages can be allowed which should be clearly justified in BPs through SoC

(c) The AEs should accompany the estimates from civil agencies for providing electric/water connection. Contingencies are not allowed over these estimates. Therefore, these should be added in AE part-I after adding contingencies on all other items.

(d) The BPs invariably must have firm requirements of the users to ensure correct estimates. The requirement which is not mentioned in the BPs, must be obtained from the users and submitted along with the AEs.

(e) While preparing the AEs, if the deviation from provisions mentioned in Board proceedings is apprehended, the Board Proceedings must be got amended before submission of AEs to this HQ. Amendments must have the approval of the Competent Authority.

(f) If the provision is not as per authorized scales, give details of user's special requirements.

(g) While preparing the AEs, provisions contained in Scales of Accommodation, E-in-Cs Standing orders, Technical Instructions, relevant IS codes on the subject, STEC Pamphlets and National Building Code are to be kept in mind and be followed in true spirit.

(h) Site plan, Layout plan, Schematic diagram etc should be self-explanatory using proper legend, different colours/ proper colour code.

2. External Electrification

(a) Indicate power requirement and details of electric load calculation on proper format.

(b) Indicate source of electric supply. Contd...2./-

-2-

e (c) Is electricity available from the existing source, if not, how it is proposed to meet

fne

requirement?

(d) Does the electrification scheme fit in the overall plan for the station to avoid any

infructuous expenditure at later date?

(e) Are the following documents enclosed:-

(I) Scaled layout plan showing existing and proposed services with take over points

duly marked in different colours including integration with adjoining areas for scrutiny of the estimates technically as well as quantitatively.

(ii) Schematic diagram showing the existing and proposed equipment ie sub-

station, generating station etc duly marked in different colours.

(iii) Voltage drop calculations to justify the size of cles/ OH lines alongwith a certificate to the effect that sizes of cables and overhead a li

bnes provided are adequate

and economical.

(iv) Schedule of cables to justify the quantity catered in estimates.

(v) Estimates from SEB alongwith the break down details in case the supply is to be taken from outside source or enhancement of load on existing source is proposed.

(vi) Details of essential loads where standby DG set supply is to be provided as per

SoA.

(vii) Line plan/ layout plan of Sub-station and power house buildings to justify the plinth area considered in AEs.

(viii) Details of existing and proposed installations to justify the provision of key

personnel qtrs proposed.

(ix) Schedule of existing and proposed internal wiring and sketches of the buildings showing internal electrical points where the cost is not included in PA rates of the

buildings.

(f) In case the E/M services are to be augmented, the details of existing assets with source

of supply, layout, capacities and sizes must be submitted along with the estimates.

(g) Provision of capacitor bank of adequate capacity for improvement of power factor must be catered in AEs to avoid penal charges by supplying agencies.

Contd...3./-

1

-3-

(h) Capacity of transformers, voltage stabilizers and DG sets must be supported with load

details and their standard capacities should be proposed. Moreover, their requirements must

be mentioned clearly in BPs.

(j) As per IE Rules, VCBs are to be provided for transformers of capacity 100 capacity

transformers like 200, 300 KVA and so on to avoid infructuous expenditure unless the

requirement of the same is justified.

(k) Size of the HT cables considered in the AEs shoulan

dd bshould

e justifiebe

dte

bcasedhno ecoonomical .

n current

carrying capacity: fault level and short'circuit current rating

(I)

.

While preparing the electrical load sheet, it must be ensured that necessary electrical load of the lifts/ cranes/ water and sewerage installations/ firefighting pumps/AC plant/heating plant/ street lights should not be left out due to overlook.

(m) The requirement and justification based on technical reasons for provision of Servo

Voltage stabilizers must be highlighted in BPs.

3. External Water Supply

(a) What is the total requirement of water for the project? Have the breakdown details

based on water supply scales given in SoA been attached?

(b) Is the water requirement available from the existing source or otherwise?

(c) Furnish the following information:-

(i) Yield of the existing source/ sources.

(ii) Number and capacity of existing storage tanks.

(iii) Number and capacity of existing sumps.

(iv) Number and capacity of existing pumping sets (also indicate "drive"). What are the standby arrangements?

(v) Existing treatment units i.e. sedimentation tank, filtration plants, chlorination

plants etc.

(d) What is the water requirement for the existing accommodation based on authorized

scales? Contd...4/-

•

-4-

(e) What are the surpluses, deficiencies both in source and storage? (Ground s& ,ps should NOT be taken as storage).The capacity of existing water treatment plants and storage tanks should be kept in mind before resorting to new provisions and should be fully justified.

(f) Have the possibility of obtaining water from civil sources with or without augmentation of their source been fully investigated before considering development of our own source for

the project under consideration?

(g) What proposals for the development of sources have been considered and what are the salient points for recommending a particular proposal?

(h) Does the proposal fit in the KLP of the station? If not, state the reasons there of.

(j) Is there any acquisition of land required for the proposed scheme? If so, give details.

(k) Do the specification and rates conform the estimating data? If not, give details in

support of assessed rates.

(I) Have provisions for key personnel quarters been made in the estimates? If so what is the basis for these provisions in relation to the existing and proposed E/M installations and

existing quarters?

(m) The following documents should be furnished:-

(i) Schedule of daily water requirement.

(ii) Scaled layout plan showing existing and proposed water supply installations, source, treatment, pump houses, storage tanks, rising/ distribution mains duly marked in different colours for integration with adjoining areas for the scrutiny of the estimates technically as well as quantitatively.

(iii) Frictional head loss calculations to justify the size and length of proposed pipe lines.

(iv) Schedule of pipes, valves, valve pits etc. to justify the quantities catered in estimates.

(v) Line plan/ layout plan of pump house buildings to justify the plinth area considered in AEs.

(vi) Schedule of internal water supply and line plan of the building showing water supply mains where internal supply is not included in plinth area rates.

Contd...5/-

-5-

(-n) CGWB report should be attached with AEs in case the water supply is proposed through bore wells to justify the items and their quantities catered in AEs.

(o) The justification for capacity of submersible pump must be based on the expected yield and depth of water table given in the CGWB Report.

4. Air Conditioning

(a) Does the building/rooms layout indicate suitability for central type, package type, split type or window type?

(b) .Has the orientation. of the building been checked to minimize the effect of solar, heat gains?

(c) Building estimates for air conditioned space do not cover insulation to roof/ceiling and double glazed windows to cut down NC load. It should be considered while working out the cost of building. While preparing the AEs for replacement of A/C plants, the system of air conditioning and its capacity should not be changed without any justification

(d) Has the provision of false ceiling of suitable insulating material been catered to reduce the room height to requisite minimum and also to provide insulation?

(e) Has attic space been provided with proper natural ventilation (in case of cooling)?

Plant Room:-

(i) Has the plant room been located at the Centre of the load and in a place from where supply and return ducts can be taken with ease and fresh air can be taken from outside?

(ii) Has sufficient space been provided around the package type plant for carrying out repairs?

(iii) Has adequate size of the central air-conditioning plant room and AHU Room been considered and their cost included in the estimates? Attach line plan/ layout plan to justify the plinth area considered in AEs.

(g) Have the ambient dry bulb (DB) and wet bulb (WB) temperatures been correctly taken based either on Metrological Data or from E&M Pamphlet issued from CME or from Instructions issued by E-in-C's Branch.

(h) Inside design conditions ie temperature, humidity, occupancy, equipment load and fresh air requirements must be based on Instructions issued by Air HQ/ Army HQ/ Naval HQ for the functioning of equipment and personal comfort. The same be obtained from the Users in writing in the form of User's data sheet.

Contd...6/-

-6- (j) Has the variation in inside temperature and humidity correctly been mentioned i( the Design Data?

(k) Have the heat load calculations, survey sheets, building drawing and board proceedings been enclosed?

(I) Has the availability of electricity and water supply required for air conditioning been checked and suitable provisions made in electric and water supply schemes?

(m) Has suitable provisions for air curtains/ air showers/ HEPA filters/ winter heating/ chemical dehumidifiers etc been made in estimates wherever required?

(n) ED rates for centralized A/C plants are inclusive of ducting/piping etc. However, cost of standby unit should be taken as 50% of rate given in ED for each ton where the plant is to be designed for round the clock operation.

(o) Accn for plant room and AHUs is required to be covered under the air conditioning estimates. Separate estimates for this B/R portion of the work should be prepared and should be covered under air-conditioning portion of the work.

(p) The following points should be kept in mind for air conditioning to auditoriums:-

(i) The approval of CFA has to be obtained for provisioning of air conditioning to auditorium and attached with the BPs in compliance to Para 8.1.5 of SOA-2009.

(ii) The radiant effect of the upper wall (above the side wall grills) and roof load (about 33%) reaches the occupied space. Stratification occurs when air is admitted and returned at a sufficiently low elevation because it doesn't mix with the upper air. This condition occurs in case of auditoriums and hangers (high ceiling height buildings). Keeping these aspects in view, only 50 to 60% of the auditorium height should be considered for required tonnage calculations.

(iii) The thumb rule, [(4V+5A)/10000; where V is volume in Cubic feet and A is total surface area in Sq feet] is somewhat suitable for rough estimation of tonnage for Central AC Plants with addition of suitable percentage to cater for human occupancy, equipment load and depending upon climatic conditions of the station.

(q) hour.

The requirement of water for AC plants should be considered as 10 liters per ton per

5. Firefighting

(a) Fire Adviser should be associated with the project at the Board of Officers stage itself for giving the complete arrangement for fire detection, alarm and fighting system in compliance to Para 62(k) of E-in-C's Standing Orders. In case the Fire Adviser has not been associated at Board of Officers Stage, the entire scheme must be got approved from the CFEES before submission of the AEs and the items catered in the AEs should

C.ontd...7/-

-7- be in accordance with the CFEES report. The schedules prepared should be supported

((( e' with inventory of items being incorporated based on layout plan.

(b) For Fire Fighting Schemes, the requirement of water for filling the tanks should be worked out as per Scale of Accn- 2009 and CFEES recommendations and pumping capacity be decided accordingly.

(c) The fire detection and alarm system is to be designed as per TI No 6/2002 and schedule is to be priced on ED rates as far as possible.

6. EOT Cranes

(a) The span (cross travel), lift, load capacity, traverse (long travel), location and type of. crane must be clearly mentioned in the BPs.

(b) The specifications for EOT Crane are not being given correctly, even the pricing is given on adhoc basis. As far as possible, the specifications, span and rates should be as per ED. In case of deviation, proper justification and price with market rate analysis should be given.

7. Lifts

(a) Provision of lifts is explicitly clear in the Scales of Accommodation. It should be accordingly recorded in BPs and AEs prepared. In case of luggage lifts, the load to be carried at a time, should be specified in BPs to avoid over/under provisioning at the time of preparation of AEs. No of stores and passenger capacity should invariably be mentioned in the BPs.

(b) The specifications/ description of lifts should be as described in ED and BIS. Safety aspect such as infrared sensors, built-in-intercom system and Automatic Rescue Device (ARD) should be provisioned in estimates.

8. Lightning Protection

(a) Is the provisioning of the lightning protection based on CFEES STEC Pamphlet No 17 and IS/ IEC 62305-1 to 4 which supersedes IS 2309 of 1989? If so, attach building drawings showing protection systems/ zones.

(b) Is the layout plan and design of lightning protection system enclosed to justify the items and quantity catered in AEs?

9. Mechanical Laundry

(a) Capacity of mechanical laundry should be worked out based on linen available for wash, cycle of mechanical laundry equipment and number of working hours for laundry.

Contd...8/-

-8- (b) Provision of room for housing the mechanical laundry including water pipes, electric cables and drain out network are to be considered at Board of Officers stage. AEs shout be prepared accordingly.

10. Geysers and Solar Water Heating System

(a) Number, capacity and type of geysers should be worked out as per Scales of Accn.

(b) Wherever solar heating system is proposed, complete details of capacity should be selected as per TI No 03/2009.

11. Desert Coolers, Refrigerators, Deep Freezers and Water Coolers

(a) The AEs for refrigerators and deep freezers need to be prepared on the basis of Para 56.1.3 of SOA.

(b) The quantity and capacity of desert coolers are to be decided considering 30 to 50 air changes per hour depending upon the climatic conditions and calculation details be enclosed.

(c) The quantity and capacity of water coolers is to be decided based on Army Headquarters, QMG Branch Policy letter No A/39822/03 Wks (Policy) dated 16 Oct 1967 and depending upon the climatic conditions and activity involved. The quantity of drinking water of 2 to 3 liters per person per day will be adequate to meet the requirement.

(d) The capacity of voltage stabilizer for above appliances should be 1 KVA otherwise should be technically justified.

12. Bulk Petroleum Installation (BPI) Scheme

(a) What is the nature of proposed work? New/ Modification?

(b) What will be maximum number of Railway Transported Containers (RTCs) to be received daily and time available for decanting of RTCs at rail heads (information to be obtained from users).

(c) What type/quality of fuel is required to be handled?

(d) What is approximate quantity of the storage required?

(e) What will be the daily requirements of the POL?

(f) Is enough electric supply available to run the proposed installation? If not, what are the proposals?

(g) What type of POL tankage installation is recommended, with reasons thereof?

(I) Above ground. Contd...9/-

-9-

What type of POL tankage installation is recommended, with reasons thereof?

(I) Above ground. (ii) Semi-underground. (iii) Fully underground.

(h) Are you incorporating flame proof fitting in your installations? Please give details of all such fittings.

(j) Are you recommending floating suctions for your POL installations? If so, why do you consider such provision necessary?

(k) What type of micro-filters do you recommend for the installation and why?

(I) Do you recommend the use of barrel/ ferry can filling machines? If so, why? Mention types, size and capacity of such equipment. Give details of the sheds also, if required.

(m) Have users any special preferential requirements for the installation? If so, indicate the details giving its executional feasibility.

(n) Is the provisioning of the lightning protection based on CFEES STEC Pamphlet No 17 and IS/IEC 62305-1 to 4 which supersedes IS 2309 of 1989 if so, attach building drawings showing protection systems/zones.

(o) Is the layout strictly in accordance with Instructions and Plan of STEC Pamphlet No17?

(p) Have you attached all the priced details in respect of all the work proposed?

(q) Have you catered sufficient measures against fire hazards? If so, what are your recommendations for the protection of:-

(I) Pump House

(ii) Distribution system

(iii) POL storage

(iv) Decanting and filling equipment's/ area.

(r) How far is your installation from rail head? How do you propose to carry your POL to your installation, by gravity main, pumping or user system give reasons of your choice?

(s) Will you require any acquisition of land for the proposed scheme, if so give details with anticipated difficulties, if any.

Contd...10/-

-10- (u) Have you attached the following documents:-

Layout plans showing existing/ proposed scheme in different colours.

(ii) Schematic diagram of the whole system showing existing and equipment in different colours.

proposed POL

(iii) Friction head loss calculations in the design of the proposed POL mains.

(v) Will the work be executed by MES or it will be executed through deposit work by Oil Company (PSU)? If so, then necessary estimates be obtained from the Oil Company and be made part of the AEs.

(w) Has necessary report from Fire Advisor/ CFEES obtained for firefighting scheme proposed in case of execution by MES?

Appendix S'

(Ref Para 4 of E-in-C's Br letter No. 62888/ Gen-Misc Corres /E4 dated 20 Aug 18)

CHECK LIST FOR SEWERAGE & SEWAGE TREATMENT PLANT

1. The design and planning of sewer networks & STPs should be carried out as per guidelines issued by this HQ letter No 86435/MISC/E4 (U3) dated 19 May 17 along with 'Essential Data'. It is also mandatory to take NOC from SPCB for "consent to establish" and 'consent to operate' on STP.

Sewer Network

2. A scaled layout plan of sewer network for existing and proposed must be categorically marked in different colour code, with critical location of Sewage Pumping Station (SPS)/Lift wells etc till STP. Plan a SPS/ lift well at a depth of 6 m to avoid ground water contamination.

3. In each branch of sewer, it must be ensured that the self-cleansing velocity (SCV) of 0.6 m/s in general and 0.8m/s in hot climate area is achieved to avoid choking of sewer lines. If required SCV is not achieved, AFTs are to be installed judiciously. However, SCV must not be greater than 3 m/s in any case to avoid scouring of sewers.

4. Minimum slope of sanitary sewer for various size of pipe should be as per Table 3.13 of "Manual of Sewerage & Sewage treatment System" published by CPEEHO.

5. The four parameters ie flow, diameter, slope and self-cleansing velocity (SVC) are very important for design/ selection of any branch of sewer network. Hence, due care has to be exercised to achieve techno-economical scheme.

6. Whenever SPS/Lift Well are planned, the dia and material of pipe has to be selected as per normal procedure adopted for normal water supply pipeline.

7. Drop man-hole, if any, must be planned.

8. Station authorities/ executives must explore the possibility, if local municipal sewer facility exists nearby. If yes, mil stn sewage can be off-loaded to municipal corporation after due consideration on minimum applicable charges for carriage and treatment as per SPCB.

9. Complete hydraulic profile of sewers indicating pipe dia, sewer length, contributing population, rate of sewerage flow, gradient vN, d/D, self-cleansing velocity (SCV) for each branch of sewer for peak flow must be provided as per CPEEHO manual.

Contd...2./-

-2-

10. Sewage Pumping Station (SPS) along with adequate non-clog pumps (workiLj & standby) are to be proposed for effective storage with level sensors for smooth operations. The design must have hydraulic detention time of 15-30 mins, otherwise septic condition will develop.

11. The sewer network should ideally cover the entire area. However, some isolated and low lying pockets may not be techno-economically feasible for connection to Central Sewage System (CSS) due to very less load and long distance carriage/ pumping. In such case, adequate capacity of septic tank (as per ED-2016) can be installed for the treatment.

STP

12. Lab reports of raw sewerage must be provided so as to analyse the type of treatment to be provided viz Moving Bed Bio-Reactor (MBBR), aeration in oxidation pond etc so as to arrive at correct sizing of units.

13. Hydraulic design of all the units from equalization tank to last unit (collection tank) must be provided.

14. Quality of treated waste water must be analyzed after commissioning to check the efficiency of the systems.

15. The BOD of treated waste water should be 30 ppm for disposal in ponds/rivers and for use in arboriculture. However, it should be 10 ppm after tertiary treatment where ever human touch is involved.

16. "No Objection Certificate" from the State Pollution Control Board must be obtained in case the treated effluent is to be let off in open/nallah or any nearby water body.

Septic Tank

17. Capacity of septic tanks, where ever proposed, should be restricted to 150 users as per ED-2016 and must be judiciously planned.

18. Soakage well/Soakage pit sizes should be computed based on percolation rate of soil. Soakage well/Soakage pits should be proposed to be above water table and confirmation to this effect be forwarded along with AEs.

19. In case of very shallow water areas, filter bed/reverse filter beds may be considered for secondary treatment of sewage.

20. Small isolated pockets can have packaged type treatment units/ septic tanks.

Qontd...3./-

-3- Recycle & Reuse

21. Collection and Equalization tank must have aeration system to avoid septic conditions.

22. As per user's requirement, size of collection tank must be worked out in case no natural ponding facility is existing in the area.

23. Arboriculture plan with adequate pumping and piping arrangement shall be provisioned. The pipe must be of different colour codes and marked as "water not for drinking" sign board at the point of tapping. The valves/ tapping points provided must have a detachable spindles to avoid any eventuality.

Adm & Safety Measures

24. Estimates for forced ventilation, flame proof light fittings and spark prevention in the SPS/ lift wells are to be included in the DPR.

25. Fresh potable/drinking water must be provided for washing and day to day activities for staff, at the STP area.

26. Adequate approach road and hard standing in the STP area is essential for all weather approachability for ease of maintenance and operation.

Appendix 'C'

(Ref Para 5 of E-in-C's Br letter No. 62888/ Gen-Misc Corres /E4 dated 20 Auq 18)

CERTIFICATE FROM DIR E/M: AEs

It is certified that the AEs pertaining to E/M Services have been prepared and submitted duly scrutinized as per E-in-C's Branch letter No. 62888/ Gen-Misc Corres /E4 dated 20 Aug 2018 and all necessary details/documents are enclosed.

Dir E/M of CE Zone