Amendment 0001.pdf

NAVFAC

SPECIFICATION

6900670

REPAIR & IMPROVE

INDUSTRIAL WASTEWATER

TREATMENT PLANT

MCAS Cherry Point, NC

AMENDMENT #0001

IMPORTANT

This amendment should be acknowledged when your proposal is submitted. Failure to acknowledge the amendment may constitute grounds for rejection of the proposal.

If your proposal has been submitted prior to the receipt of this amendment, acknowledgement should be made by telegram, which should state whether the price contained in your proposal is to remain unchanged, is to be decreased by an amount, or is to be increased by an amount. The acknowledgement must be received prior to proposal opening time.

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT 1. CONTRACT ID CODE PAGE OF PAGES

1 58

2. AMENDMENT/MODIFICATION NO. 3. EFFECTIVE DATE 4. REQUISITION/PURCHASE REQ. NO. 5. PROJECT NO. (If applicable)

0001 05/12/2020 6900670

6. ISSUED BY Code N40085 7. ADMINISTERED BY (If other than item 6.) Code

CG MCAS Cherry Point

FACILITIES, ROICC

B-163, CURTIS ROAD

PSC BOX 8006

CHERRY POINT, NC 28533

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State and ZIP Code) 9A. AMENDMENT OF SOLICITATION

Repairs to BEQ 4311

9B. DATED (SEE ITEM 11)

AMENDMENT MUST BE ACKNOWLEDGED WITH YOUR PROPOSAL 10A. MODIFICATION OF CONTRACT/ORDER NO.

10B. DATED (SEE ITEM 13)

CODE FACILITY CODE

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

The above numbered solicitation is amended as set forth in item 14. The hour and date specified for receipt of Offers is extended is not extended. Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended, by one of the following methods: (a) By completing items 8 and 15, and returning 1 copy of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted; or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (if required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS,

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14. ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATION CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103 (b).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER: (specify type of modification and authority)

E. IMPORTANT: Contractor is not is required to sign this document and return original to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

6900670 Repair & Improve Industrial Wastewater Treatment Plant, Marine Corps Air Station Cherry Point, NC

This amendment is being issued to respond to pre-award RFIs.

The deadline to submit pre-award RFIs of 18 May 2020 by 0900 local times remains UNCHANGED.

The proposal due date of 27 May 2020 at 1200 local times remains UNCHANGED.

See Attached.

15A. NAME AND TITLE OF SIGNER (Type or print) 16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

15B. CONTRACTOR/OFFEROR (Same as Item 8) 15C. DATE SIGNED 16B. UNITED STATES OF AMERICA 16C. DATE SIGNED

BY

(Signature of person authorized to sign) (Signature of Contracting Officer)

NSN 7540-01-152-8070 30-105 STANDARD FORM 30 (REV.1-83) 0224-3(10-90)

PREVIOUS EDITION UNUSABLE Prescribed by GSA

Amendment 0001 6900670 - REPAIR & IMPROVE INDUSTRIAL

WASTEWATER TREATMENT PLANT

CONTINUATION SHEET

SPECIFICATIONS

SPECIFICATION 40 95 00 is deleted and is replaced by SPECIFICATION 40

95 00, dated 11 MAY 2020 as shown in the footer, and accompanies this

Amendment.

CONTRACT DRAWINGS

The following drawings are revised as of May 11, 2020:

NAVFAC DWG NO. TITLE

12798808 Influent Pump Station and Sludge Pump Station, revised

12798813 Chemical Storage, revised

These revised drawings accompany this Amendment.

RFI Responses:

1. Drawing CU101 shows a pressure indicator with a range of 0-20 psi, is there a tag number for this unit? Whom is supplying it?

Response: Refer to revised Specification 40 95 00 and revised drawings 12798809 and 12798813 dated 11 MAY 2020.

2. On drawings CU104 and I101 there seems to be a discrepancy as to the number of floats. I101 indicates 5 floats and CU104 indicates 10 floats. Additionally drawing I101 describes this as the Primary Influent Station and Dwg CU104 identifies it as the Primary Clarifiers Effluent Pump station. Which drawing is correct? We also see a note for 6 and 4 float holder on CU104 so we’re assuming you want 10 floats if so will the I-drawings be revised?

Response: Refer to revised Specification 40 95 00 and revised drawings 12798809 and 12798813 dated 11 MAY 2020.

3. Drawing I500 shows tag LI-12 & 12A as a reverse float level, no symbol is identified on the drawing to identify what type of device is to be installed.

Response: Refer to revised Specification 40 95 00 and revised drawings 12798809 and 12798813 dated 11 MAY 2020.

WO#6900670 REPAIR AND IMPROVE IWTP (CP1711M&R)

SECTION 40 95 00

PROCESS CONTROL

10/07

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)

ANSI C12.1 (2008) Electric Meters Code for Electricity Metering

ASME INTERNATIONAL (ASME)

ASME B31.8 (2014; Supplement 2014) Gas Transmission and Distribution Piping Systems

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

IEEE 142 (2007; Errata 2014) Recommended Practice for Grounding of Industrial and Commercial Power Systems - IEEE Green Book

IEEE C37.90 (2005; R 2011) Standard for Relays and Relay Systems Associated With Electric Power Apparatus

IEEE C37.90.1 (2013) Standard for Surge Withstand Capability (SWC) Tests for Relays and Relay Systems Associated with Electric Power Apparatus

IEEE C62.41.1 (2002; R 2008) Guide on the Surges Environment in Low-Voltage (1000 V and Less) AC Power Circuits

IEEE C62.41.2 (2002) Recommended Practice on Characterization of Surges in Low-Voltage (1000 V and Less) AC Power Circuits

IEEE Stds Dictionary (2009) IEEE Standards Dictionary: Glossary of Terms & Definitions

INTERNATIONAL ELECTROTECHNICAL COMMISSION (IEC)

IEC 61131-3 (2013) Programmable Controllers - Part 3:

Programming Languages

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

NEMA 250 (2014) Enclosures for Electrical Equipment (1000 Volts Maximum)

SECTION 40 95 00 Page 1 May 11, 2020

WO#6900670 REPAI R AND I MPROVE I WTP ( CP1711M&R)

NEMA I CS 1 ( 2000; R 2015) St andar d f or I ndust r i al Cont r ol and Syst ems: Gener al Requi r ement s

NEMA I CS 2 ( 2000; R 2005; Er r at a 2008) I ndust r i al Cont r ol and Syst ems Cont r ol l er s, Cont act or s, and Over l oad Rel ays Rat ed 600 V

NEMA I CS 3 ( 2005; R 2010) Medi um- Vol t age Cont r ol l er s Rat ed 2001 t o 7200 V AC

NEMA I CS 4 ( 2015) Appl i cat i on Gui del i ne f or Ter mi nal Blocks

NATI ONAL FI RE PROTECTI ON ASSOCI ATI ON ( NFPA)

NFPA 70 ( 2017; ERTA 1- 2 2017; TI A 17- 1; TI A 17- 2;

TI A 17- 3; TI A 17- 4; TI A 17- 5; TI A 17- 6;

TI A 17- 7; TI A 17- 8; TI A 17- 9; TI A 17- 10;

TI A 17- 11; TI A 17- 12; TI A 17- 13; TI A

17- 14) Nat i onal El ect r i cal Code

NFPA 820 ( 2016) St andar d f or Fi r e Pr ot ect i on i n Wast ewat er Tr eat ment and Col l ect i on Facilities

NATI ONAL I NSTI TUTE OF STANDARDS AND TECHNOLOGY ( NI ST)

NI ST SP 250 ( 1991) Cal i br at i on Ser vi ces User s Gui de

U. S. NATI ONAL ARCHI VES AND RECORDS ADMI NI STRATI ON ( NARA)

47 CFR 15 Radi o Fr equency Devi ces

UNDERWRI TERS LABORATORI ES ( UL)

UL 1059 ( 2001; Repr i nt Dec 2017) St andar d f or Ter mi nal Bl ocks

UL 508 ( 1999; Repr i nt Oct 2013) I ndust r i al Cont r ol Equi pment

UL 508A ( 2018; Repr i nt Jul 2018) UL St andar d f or Saf et y I ndust r i al Cont r ol Panel s

1. 2 DEFINITIONS

Def i ni t i ons, Symbol s, and engi neer i ng uni t abbr evi at i ons shal l conf or m t o I EEE St ds Di ct i onar y, as appl i cabl e.

1. 3 SUBMITTALS

Submi t t he f ol l owi ng i n accor dance wi t h Sect i on 01 33 00 SUBMI TTAL

PROCEDURES:

SD- 02 Shop Dr awi ngs

Installation

SECTI ON 40 95 00 Page 2

Wiring

SD- 03 Pr oduct Dat a

Cont r ol Dr awi ngs

Submi t i n bookl et f or m, i ndexed t o t he uni que i dent i f i er s, consi st i ng of dat a sheet s t hat document compl i ance wi t h t he speci f i cat i on. Wher e mul t i pl e component s ar e shown on a cat al og cut , mar k t he appl i cat i on speci f i c component .

Sensor s and Met er s

Per f or mance Ver i f i cat i on Test ( PVT)

Fact or y Test

Moni t or i ng and Cont r ol Devi ces

Sl udge Bl anket Level Pr obe; G

SD- 06 Test Repor t s

Test i ng, Adj ust i ng and Commi ssi oni ng

Per f or mance Ver i f i cat i on Test ( PVT)

Endur ance Test

SD- 07 Cer t i f i cat es

Cont r ol and Sensor Wi r i ng

Gr ound Rods

SD- 10 Oper at i on and Mai nt enance Dat a

Tr ai ni ng Manual ; G

I nst r ument at i on and Cont r ol Syst em; G

1. 4 SEQUENCING

Ref er t o t he wor k r est r i c t i ons spec sect i on f or sequenci ng i nf or mat i on. .

PART 2 PRODUCTS

2. 1 SYSTEM DESCRI PTI ON

The Cont r act or shal l pr ovi de, t hr ough t he ser vi ces of a s i ngl e Cont r ol Syst ems I nt egr at or ( al so r ef er r ed t o as CSI ) , al l component s, syst em i nst al l at i on ser vi ces, as wel l as al l r equi r ed and speci f i ed anci l l ar y ser vi ces, i n connect i on wi t h expandi ng and modi f y i ng t he exi st i ng Pr ocess I nst r ument at i on and Cont r ol Syst em as speci f i ed her ei n. The Cont r act or shal l be ul t i mat el y r esponsi bl e f or t he i nst al l at i on; however , t he Cont r ol Syst em I nt egr at or ( CSI ) shal l i nc l ude such ser vi ces as t o ensur e t hat t he syst em i s i nst al l ed as speci f i ed whi l e al so meet i ng t he qual i t y pr act i ces

SECTI ON 40 95 00 Page 3 of t he CSI . The Cont r ol Syst em I nt egr at or shal l al so coor di nat e t hi s wor k wi t h t he Cont r act or t o ensur e t hat t he pr oper cont r ol syst em i nt er f aces, s i t e pr epar at i on, and equi pment i nst al l at i on and t est i ng ser vi ces ar e pr ovi ded. The Cont r act or ' s r esponsi bi l i t i es, as di st i nct f r om t he Cont r ol Syst em I nt egr at or ' s r esponsi bi l i t i es, shal l be t o pr ovi de al l addi t i onal mat er i al s and wor k necessar y t o suppl ement t he mat er i al s and wor k pr ovi ded by t he Cont r ol Syst em I nt egr at or ; t her eby sat i sf y i ng al l r equi r ement s speci f i ed wi t hi n t hi s sect i on. The Cont r act or shal l be r esponsi bl e f or coor di nat i ng i nt er f aces bet ween Pr ocess I nst r ument at i on and Cont r ol Syst em equi pment pr ovi ded under t he Pr ocess Cont r ol speci f i cat i on sect i on and t he equi pment pr ovi ded under ot her sect i ons of t he speci f i cat i ons. The Cont r act or shal l ver i f y and coor di nat e space r equi r ement s, pr ocess equi pment power suppl y and vol t age, pr ocess equi pment cont r ol power suppl y and vol t age, compat i bi l i t y of cont r ol s i gnal s, det ai l s of equi pment i nst al l at i on and i nt er connect i on. Coor di nat i on shal l i ncl ude di st r i but i on of appr oved shop dr awi ngs t o al l vendor s, subcont r act or s, et c. , i nvol ved i n t he cont r ol i nt er f ace. Li kewi se, t he Cont r act or shal l ensur e t hat i nst r ument at i on and cont r ol devi ces pr ovi ded under ot her sect i ons of t he speci f i cat i ons ar e compat i bl e and of t he same qual i t y and char act er i st i cs as s i mi l ar devi ces speci f i ed her ei n.

The exi st i ng pr ocess i nst r ument at i on and cont r ol syst em shal l be expanded/ modi f i ed t o moni t or and cont r ol t he oper at i on of pr ocess equi pment as speci f i ed her ei n as shown on t he dr awi ngs. The cont r ol syst em shal l pr ovi de f or oper at or i nt er act i on, over al l cont r ol syst em super vi s i on, and pr ocess equi pment cont r ol and moni t or i ng. Pr ovi de har dwar e conf i gur ed and si zed t o suppor t expansi on as speci f i ed and shown on t he dr awi ngs. The exi st i ng pr ocess i nst r ument at i on and cont r ol syst em wor k st at i ons and OI Ts shal l be pur ged of al l scr eens no l onger i n use.

2. 1. 1 Gener al Requi r ement s

Cont r ol Syst em I nt egr at or Qual i f i cat i ons: Cont r ol Syst em I nt egr at or s shal l meet or exceed t he f ol l owi ng qual i f i cat i ons. Upon r equest by t he Cont r act i ng Of f i cer and pr i or t o awar d of t he cont r act , t he Cont r act or shal l be r equi r ed t o demonst r at e compl i ance wi t h t he st at ed qual i f i cat i on requirements:

a. Or gani zat i on t hat has been est abl i shed f or a mi ni mum of f i ve year s and act i vel y i nvol ved i n t he busi ness of pr ocess cont r ol and i nst r ument at i on syst ems i nt egr at i on and has adequat e pl ant f aci l i t i es, or gani zat i on st r uct ur e, manpower , and t echni cal and manager i al exper t i se t o pr oper l y per f or m t he wor k under and i n conf or mance wi t h t hese speci f i cat i ons.

b. I nvol vement i n f i ve ( mi ni mum) pr oj ect s of s i mi l ar scope and si ze i nvol v i ng t he desi gn, i nt egr at i on, i nst al l at i on, t est i ng and commi ssi oni ng of pr ocess i nst r ument at i on, cont r ol equi pment , and sof t war e cur r ent l y used by t he exi st i ng pr ocess i nst r ument at i on and cont r ol syst em at t he wast ewat er t r eat ment pl ant . One of t hese pr oj ect s shal l have been wi t hi n 100 r oad mi l es of t he MCAS Cher r y Poi nt i ndust r i al t r eat ment pl ant .

c. The Cont r ol Syst em I nt egr at or shal l have f i el d ser vi ce st af f l ocat ed wi t hi n 175 r oad mi l es f r om t he MCAS Cher r y Poi nt wast ewat er t r eat ment plant.

The exi st i ng pl ant pr ocess i nst r ument at i on and cont r ol syst em consi st s of var i ous PLC cont r ol panel s wi t h l ocal Oper at or I nt er f ace Ter mi nal s ( OI Ts)

SECTI ON 40 95 00 Page 4 and t wo PC based oper at or wor kst at i ons ( OWSs) al l i nt er connect ed by a f i ber opt i c and Cat 5E Et her net net wor k. Exi st i ng PLCs ar e Al l en- Br adl ey SLC 5/ 05s wi t h t he f ol l owi ng I / O modul es: 1746- I A16 AC I nput Modul e, 1746- OW8 or 16 Rel ay Out put Modul es, 1746- NI 4 or 8 Anal og I nput Modul es, and 1746- NO4I or 8 Anal og Out put Modul es. Exi st i ng OI Ts ar e Red Li on Model G310S000. The OWSs ar e PC based comput er s r unni ng Wonder war e I nTouch 2012 HMI sof t war e. Net wor k pr ocess devi ce communi cat i ons i s pr ovi ded over t he Et her net net wor k usi ng Al l en- Br adl ey' s Et her net I P communi cat i ons pr ot ocol . Exi st i ng Et her net swi t ches ar e ei t her Phoeni x Cont act Model 2891453 ( 1 FL por t , 4 RJ45 por t s) i n smal l PLCs or Phoeni x Cont act Model 2832328 wi t h associ at ed modul es f or f i ber and RJ- 45 por t s.

The exi st i ng make and model of PLC, OI T, and net wor k component s l i s t ed ar e accept abl e t o be pr ovi ded as l ong as t hey pr ovi de f or t he speci f i ed oper at i onal f unct i onal i t y r equi r ed f or t hi s pr oj ect . Component s pr ovi ded t hat mat ch make and model of exi st i ng component s al r eady i n use at t he wast ewat er t r eat ment f aci l i t y ar e not r equi r ed t o be pr ovi ded wi t h spar e par t s or conf i gur at i on sof t war e.

2. 1. 2 Operation

The cont r ol syst em pr ovi ded under t hi s speci f i cat i on shal l oper at e usi ng di r ect di gi t al cont r ol ( DDC) al gor i t hms or l adder l ogi c t ype and super vi sor y cont r ol t o pr ovi de t he r equi r ed sequences of oper at i on. I nput dat a t o t he cont r ol l er shal l be obt ai ned by usi ng i nst r ument s and cont r ol s i nt er f aced t o mechani cal , el ect r i cal , ut i l i t y syst ems and ot her syst ems as shown and speci f i ed.

2. 1. 2. 1 1. 3. 2. 1 Pr ocess Cont r ol l er Pr ogr ammi ng Funct i onal Requi r ement s

The f ol l owi ng par agr aphs descr i be gener al conf i gur at i on t asks t hat ar e r equi r ed f or t he syst em pr ocess cont r ol l er ( s) ( PAC, PLC, et c. ) al so r ef er r ed t o as PLC( s) . These t asks shal l be pr ogr ammed i n any appl i cabl e PLC. Each PLC may have mul t i pl e i nst ances of each of t hese t asks, or may have no i nst ances of some or al l of t hese t asks.

Avai l abl e Pr ocess Val ues. Al l PLC- gener at ed pr ocess al ar m, equi pment st at us, and pr ocess var i abl e val ues shal l be avai l abl e at any oper at or wor kst at i on HMI . I f pr ovi ded, al l l ocal PLC- gener at ed pr ocess al ar m, equi pment st at us, and pr ocess var i abl e val ues shal l be avai l abl e at t he l ocal oper at or i nt er f ace t er mi nal ( OI T) HMI .

Fl ow Val ues. Al l f l ow val ues shal l be i nt egr at ed, t ot al i zed, and st or ed i n t he PLC r egi st er s so t he val ues di spl ayed on t he HMI and on t he f i el d pr ocessor wi l l be i dent i cal . Fl ow t ot al s shal l r eset dai l y unl ess speci f i cal l y st at ed ot her wi se i n t he cont r ol descr i pt i on. Dai l y f l ow t ot al s shal l be l ogged hi st or i cal l y pr i or t o r eset .

Syst em Fai l ur e. Fai l ur e of a PLC shal l r esul t i n saf e shut down of associ at ed pr ocess equi pment . I nt er posi ng r el ays shal l be pr ovi ded wher e r equi r ed t o assur e t hat equi pment wi l l r ever t t o i t s f ai l - saf e condi t i on.

Fai l ur e of any PLC or i t s communi cat i on shal l be al ar med on t he HMI .

PLC Var i abl e Def i ni t i on. The PLC memor y shal l i nc l ude bot h f i el d I / O poi nt s and i nt er nal l y gener at ed poi nt s r equi r ed f or pr ogr ammi ng. Al l f i el d I / O poi nt s and i nt er nal pr ogr ammi ng poi nt s shal l be f ul l y def i ned accor di ng t o var i abl e nami ng convent i ons appr oved by Owner . As a mi ni mum, each var i abl e shal l be pr ovi ded wi t h a t ag name, descr i pt i on, and var i abl e memor y t ype.

SECTI ON 40 95 00 Page 5

Anal og Scal i ng. Each anal og i nput and out put wi l l be appr opr i at el y scal ed f or use i n i nt er nal PLC pr ogr ammi ng, moni t or i ng by t he HMI , or t r ansmi ssi on t o ot her PLCs. Requi r ement s f or r aw val ue scal i ng shal l be coor di nat ed wi t h t he HMI sof t war e t o ensur e compat i bi l i t y .

Equi pment Runt i mes. Each PLC shal l accumul at e a r unt i me val ue i n hour s f or each equi pment " r un st at us" moni t or ed by t he r espect i ve PLC. The r unt i me cal cul at i on shal l have a mi ni mum r esol ut i on of 3. 6 seconds and shal l be pr ovi ded wi t h suf f i c i ent s i gni f i cant di gi t s t o accumul at e f or a mi ni mum per i od of 5 year s bef or e r eset t i ng t o zer o. The accumul at ed val ue shal l be avai l abl e f or di spl ay on t he HMI and i t shal l be possi bl e t o r eset t he r unt i me val ue t o an ent er ed non- zer o val ue by st af f at a super vi sor l evel or hi gher . Equi pment r unt i me val ues shal l be pr ovi ded wi t h hi gh val ue al ar m not i f i cat i on f or mai nt enance not i f i cat i on and hi st or i cal l y l ogged at t he end of each day.

Cont r ol Fai l ur e Al ar ms. When equi pment i s cont r ol l ed f r om t he PLC, di scr et e out put commands ( e. g. st ar t , st op, open, c l ose, et c. ) shal l be compar ed t o t hei r r espect i ve pr ocess f eedback st at us s i gnal ( e. g. r un, open, c l ose, f l ow, et c. ) when avai l abl e t o ver i f y pr oper execut i on. I f t he f eedback st at us does not mat ch t he most r ecent out put command ( af t er an adj ust abl e 2 t o 300 second t i me del ay) , a cont r ol f ai l ur e or di scr epancy al ar m shal l be annunci at ed on t he HMI , r equi r i ng oper at or acknowl edgment .

The al ar m shal l r emai n ener gi zed unt i l t he pr oper di scr et e condi t i on i s sensed or unt i l t he oper at or r eset s t he al ar m t hr ough t he HMI .

Equi pment Fai l ur e Count er s. Equi pment f ai l ur es shal l be count ed and hi st or i cal l y l ogged. An aut omat i c r eset shal l r eset t hi s val ue t o zer o mont hl y af t er i t has been r ecor ded hi st or i cal l y by t he syst em.

2. 1. 2. 2 1. 3. 2. 2 Human Machi ne I nt er f ace ( HMI ) Pr ogr ammi ng Funct i onal Requirements

The f ol l owi ng par agr aphs descr i be gener al conf i gur at i on t asks t hat ar e r equi r ed f or t he syst em HMI sof t war e at t he oper at or wor kst at i ons ( OWSs) and oper at or i nt er f ace t er mi nal s ( OI Ts) .

Super vi sor y and Local HMI s. Comput er based oper at or wor kst at i ons or panel mount ed oper at or i nt er f ace t er mi nal s shal l pr ovi de HMI access t o al l pr ocesses moni t or ed and cont r ol l ed by t he i ndi v i dual Cont r ol Panel .

Local l y mount ed oper at or i nt er f ace t er mi nal s shal l pr ovi de HMI access t o t he l ocal pr ocesses moni t or ed and cont r ol l ed by t he associ at ed l ocal PLC and shal l have addi t i onal f unct i onal i t y i f speci f i ed el sewher e. Local l y mount ed oper at or i nt er f ace t er mi nal s shal l have t hei r own SCADA dat abase t o pr ovi de l ocal moni t or i ng and cont r ol even i f net wor k access t o r emot e equi pment i s i nt er r upt ed.

Al l pr ocess par amet er s shal l be hi st or i cal l y t r ended wi t h pr edef i ned t r end scr eens/ gr oups conf i gur ed f or easy v i ewi ng. As a mi ni mum t hi s shal l i ncl ude al l anal og i nput s, cal cul at ed var i abl es, and PI D cont r ol pr ocess set poi nt s. Tr end pens shal l be gr ouped l ogi cal l y per pr ocess and cont r ol l oop. Tr ends shal l be pr ovi ded f or each PI D cont r ol pr ocess wi t h pr ocess, set poi nt , and out put di spl ayed t oget her f or ease of l oop t uni ng.

Al ar ms. Compl et e syst em al ar mi ng shal l be conf i gur ed. OI T al ar m summar i es shal l be pr ovi ded wi t h an acknowl edge al l act i on. Al l pr ocess or syst em al ar ms shal l appear on an al ar m summar y scr een and t he al ar m banner of each pr ocess gr aphi c. Al ar ms and event s shal l be col or coded on t he al ar m

SECTI ON 40 95 00 Page 6 summar y scr een, wi t h i ni t i al col or s based on Owner convent i ons or t he def aul t col or s associ at ed wi t h t he gr aphi cs package. The col or s may be adj ust ed af t er meet i ng wi t h Gover nment . Al ar m pr i or i t i z i ng and ar ea assi gnment s ( i f any) shal l be coor di nat ed wi t h Gover nment at t he f i r st conf i gur at i on meet i ng. Addi t i onal al ar ms may be r equest ed dur i ng const r uct i on and st ar t up f or any anal og pr ocess val ue i n addi t i on t o what i s shown on t he P&I Ds or speci f i ed her ei n t o i ncl ude l ow- l ow, l ow, hi gh, and hi gh- hi gh al ar m val ues. Nui sance al ar ms shal l be suppr essed f or pr ocess val ues t hat may spi ke or be i r r egul ar by pr ovi di ng an adj ust abl e t i me del ay ( 1- 99 seconds) bef or e al ar mi ng. At a mi ni mum, al l pr essur e nui sance al ar ms shal l be suppr essed. Al l al ar ms/ event s shal l be t i me st amped when di spl ayed or pr i nt ed. Unacknowl edged al ar ms shal l not aut omat i cal l y c l ear f r om t he al ar m summar y i f t hey r et ur n t o nor mal bef or e bei ng acknowl edged.

Pr ocess scr eens shal l be dr awn si mi l ar t o P&I D di agr ams. Al l equi pment moni t or ed or cont r ol l ed shal l be shown as wel l as any val ves, gat es, pumps, mot or i zed equi pment , chemi cal i nj ect i on poi nt s, wi t hi n t he pr ocess pi pi ng.

Smal l and ot her wi se i nsi gni f i cant non moni t or ed equi pment may be excl uded at t he owner ' s appr oval . Pr ocess l i nes shal l be shown as sol i d l i nes of var yi ng t hi ckness t o coi nci de wi t h pi pe or channel s i ze wi t h col or mat chi ng as possi bl e t he pi pe and st r uct ur e pai nt i ng i n t he 10 St at es St andar ds f or wat er and wast ewat er .

Al l pr ocess I / O and cal cul at ed var i abl es shal l be di spl ayed on scr eens.

Wher e t i mer s ar e used f or cont r ol f unct i ons t hei r count and pr eset shal l be di spl ayed. Wher e a PI D i s used f or cont r ol of a pr ocess t he pr ocess val ue and set poi nt shal l be di spl ayed. Al l t ot al i zer s shal l be di spl ayed wi t h t hei r associ at ed f l ows. Al l r unt i mes shal l be di spl ayed near t hei r associ at ed equi pment or wi t hi n t he equi pment popup scr een.

The f ol l owi ng OWS HMI scr eens shal l be pr ovi ded or modi f i ed i f exi st i ng f or t he new pr ocess and equi pment .

Menu Scr een - Updat e navi gat i on l i nks f or new scr eens.

Pl ant Over vi ew - Show new PLC' s, pr ovi de scr een navi gat i on l i nks.

El ect r oni c Onl i ne O&M Manual s - Updat e wi t h new el ect r oni c O&M f i l es and pr ovi de l i nks f or v i ewi ng.

Communi cat i ons Over vi ew - Add new equi pment and r emove demol i shed equi pment . Pr ovi de exi st i ng PLC scr een f unct i onal i t y f or new PLCs.

Pr ovi de new PLC st at us scr eens f or each new PLC wi t h f unct i onal i t y l i ke exi st i ng PLC st at us scr eens.

Runt i mes - Add new equi pment r unt i mes. Remove demol i shed equipment.

Repor t s - Add new pr ocess val ues t o r epor t s per Gover nment .

Removed demol i shed equi pment val ues. Cor r ect any r epor t cal cul at i ons due t o changes.

Equi pment Over vi ew - updat e al l equi pment , val ves, st r uct ur es and devi ces t o r ef l ect changes made t hr ough demol i t i on or compl et i on of new wor k.

SECTI ON 40 95 00 Page 7

2. 1. 2. 3 1. 3. 2. 3 Typi cal Mot or i zed Equi pment Cont r ol Descr i pt i on

These cont r ol r equi r ement s ar e i n addi t i on t o t hose i n pr ocess speci f i c cont r ol descr i pt i ons unl ess st at ed ot her wi se.

DERI VED ALARMS: Di scr epancy Al ar m ( Fai l t o Run or St op when cont r ol l ed i n Remot e af t er an adj ust abl e t i mer ) , Common Fai l ur e ( i f mul t i pl e f ai l ur e s i gnal s ar e pr ovi ded f or equi pment ) .

DERI VED I NDI CATI ONS: Runt i me, St ar t Count er , Fai l Count er , I nt er l ock Ti mer : I f equi pment i s not st ar t i ng or st oppi ng on an oper at or s command due t o a t i med i nt er l ock, a t i mer shal l be di spl ayed l et t i ng t he oper at or know t he act i on has been del ayed.

PLC POWERUP: On PLC power up, cont r ol of t he equi pment shal l be set t o Remot e Manual mode.

POWER FAI LURE: Cont r ol of t he equi pment shal l r esume wi t h t he cont r ol mode est abl i shed pr i or t o t he power f ai l ur e.

HMI REQUI REMENTS: The equi pment shal l be depi ct ed on t he pr ocess HMI di spl ay. The di spl ay l ayout shal l be s i mi l ar t o t he P&I D. The equi pment symbol shal l be a sel ect abl e t ar get t hat r et r i eves t he r espect i ve cont r ol over l ay di spl ay.

2. 1. 2. 4 1. 3. 3 Pr ocess I nst r ument at i on

Pr ocess i nst r ument s shal l be as speci f i ed her ei n wi t h opt i ons pr ovi ded, i n accor dance wi t h t he Pr ocess I nst r ument at i on Schedul e appended t o t he end of t hi s speci f i cat i on and as shown on t he dr awi ngs.

2. 1. 3 Points

Logi c and f unct i ons of pr ocess equi pment t hat i s not t o be demol i shed, but cont ai ns var i abl es or I / O t o be demol i shed shal l be modi f i ed t o r emai n f unct i onal . The Gover nment shal l appr ove al l sof t war e f unct i onal i t y modi f i cat i ons. Pr ovi de i nput s t o and out put s f r om t he cont r ol syst em i n accor dance wi t h t he I nput / Out put ( I / O) Summar y Tabl e i ndi cat ed. Each connect ed anal og out put ( AO) , anal og i nput ( AI ) , di gi t al out put ( DO) , di gi t al i nput ( DI ) , pul se accumul at or ( PA) i nput and ot her i nput or out put devi ce connect ed t o t he cont r ol syst em shal l r epr esent a " poi nt " wher e r ef er r ed t o i n t hi s speci f i cat i on.

2. 1. 4 Al l owance f or addi t i onal Pr ogr ammi ng

The Cont r ol Syst em I nt egr at or ( CSI ) shal l pr ovi de an al l owance of 24 wor ki ng hour s of pr ogr ammi ng t i me f or l ast mi nut e syst em char ges/ modi f i cat i ons. Thi s al l owance i s f or changes di r ect ed at t he r equest of t he Gover nment or t he engi neer .

2. 1. 5 Dat a Tr ansmi ssi on Syst ems ( DTS)

Pr ovi de dat a t r ansmi ssi on syst ems f or communi cat i on bet ween PLCs and bet ween PLCs and t he Oper at or ' s Wor kst at i on shal l expand t he exi st i ng pl ant Et her net net wor k pr ovi di ng per f or mance and wor kmanshi p equal t o or gr eat er t han t he exi st i ng syst em.

SECTI ON 40 95 00 Page 8

2. 2 MATERI ALS AND EQUI PMENT

2. 2. 1 St andar d Pr oduct s

Mat er i al s and equi pment must be st andar d unmodi f i ed pr oduct s of a manuf act ur er r egul ar l y engaged i n t he manuf act ur i ng of such pr oduct s.

Uni t s of t he same t ype of equi pment shal l be pr oduct s of a s i ngl e manuf act ur er . I t ems of t he same t ype and pur pose shal l be i dent i cal and suppl i ed by t he same manuf act ur er , unl ess r epl aced by a new ver si on appr oved by t he Gover nment .

2. 2. 2 Nameplates

Each maj or component of equi pment shal l have t he manuf act ur er ' s name and addr ess, and t he model and ser i al number i n a conspi cuous pl ace. Lami nat ed pl ast i c namepl at es shal l be pr ovi ded f or equi pment devi ces and panel s f ur ni shed. Each namepl at e shal l i dent i f y t he devi ce, such as pump " P- 1" or val ve " VLV- 402" . Label s shal l be coor di nat ed wi t h t he schedul es and t he pr ocess and i nst r ument at i on dr awi ngs. Lami nat ed pl ast i c shal l be 1/ 8 i nch t hi ck, whi t e wi t h bl ack cent er cor e. Namepl at es shal l be a mi ni mum of 1 by 3 i nches wi t h mi ni mum 1/ 4 i nch hi gh engr aved bl ock l et t er i ng. Namepl at es f or devi ces smal l er t han 1 by 3 i nches shal l be at t ached by a nonf er r ous met al chai n. Al l ot her namepl at es shal l be at t ached t o t he devi ce.

2. 3 GENERAL REQUI REMENTS

Equi pment l ocat ed out door s, not pr ovi ded wi t h c l i mat e cont r ol l ed encl osur e, shal l be capabl e of oper at i ng i n t he ambi ent t emper at ur e r ange i ndi cat ed i n par agr aph ENVI RONMENTAL CONDI TI ONS, unl ess ot her wi se speci f i ed. Equi pment and wi r i ng must be i n accor dance wi t h NFPA 70, wi t h pr oper consi der at i on gi ven t o envi r onment al condi t i ons such as moi st ur e, di r t , cor r osi ve agent s, and hazar dous ar ea c l assi f i cat i on.

2. 4 MONI TORI NG AND CONTROL DEVI CES

The cont r ol syst em shal l be compl et e i ncl udi ng sensor s, f i el d pr eampl i f i er s, s i gnal condi t i oner s, of f set and span adj ust ment s, ampl i f i er s, t r ansducer s, t r ansmi t t er s, cont r ol devi ces, engi neer i ng uni t s conver si ons and al gor i t hms f or t he appl i cat i ons; and shal l mai nt ai n t he speci f i ed end- t o- end pr ocess cont r ol l oop accur acy f r om sensor t o di spl ay and f i nal cont r ol el ement . Cont r ol equi pment shal l be power ed by a 120 vAc, s i ngl e phase, 60 Hz power sour ce, wi t h l ocal t r ansf or mer s i ncl uded as needed f or s i gnal t r ansmi ssi on and subsyst em oper at i on. Connect i ng conduct or s shal l be sui t abl e f or i nst al l ed ser vi ce. Encl osur es shal l be r at ed f or NEMA 12 f or al l uni t pr ocesses up t o t he i nf l uent pump st at i on.

Al l ot her uni t pr ocesses f ol l owi ng t he i nf l uent pump st at i on shal l be NEMA 4X. Encl osur es shal l be r at ed f or hazar dous l ocat i ons as c l assi f i ed on t he dr awi ngs and i n accor dance wi t h by NFPA 820.

Al l 120 VAC power ed i nst r ument s shal l be pr ovi ded wi t h power sur ge pr ot ect i on devi ces at t he i nst r ument . Al l anal og i nst r ument s wi t h s i gnal wi r i ng ext endi ng out s i de of a bui l di ng shal l be pr ovi ded wi t h s i gnal sur ge pr ot ect i on devi ces at t he i nst r ument i n NEMA 4X encl osur es. Sur ge pr ot ect i on devi ces shal l be as manuf act ur ed by Dehn, Phoeni x Cont act , Edco, Pol yPhasor , or appr oved equal .

SECTI ON 40 95 00 Page 9

2. 4. 1 Transmitter

Unl ess i ndi cat ed ot her wi se, each sensor shal l be pr ovi ded wi t h a t r ansmi t t er , sel ect ed t o mat ch t he sensor . Except wher e speci f i cal l y i ndi cat ed ot her wi se on t he dr awi ngs, t he t r ansmi t t er shal l be pr ovi ded wi t h a f our di gi t , l ocal cont r ol panel HMI , or anal og v i sual di spl ay of t he measur ed par amet er and shal l pr ovi de a 4 t o 20 mAdc out put s i gnal pr opor t i onal t o t he l evel of t he measur ed par amet er . Accur acy shal l be pl us or mi nus 0. 5 per cent of f ul l scal e r eadi ng wi t h out put er r or not exceedi ng pl us or mi nus 0. 25 per cent of t he cal i br at ed measur ement .

Tr ansmi t t er shal l be l ocat ed wher e i ndi cat ed, mount ed i nt egr al l y wi t h t he sensor , pi pe mount ed, wal l mount ed or i nst al l ed i n t he cont r ol panel . The di st ance bet ween t he sensor and t r ansmi t t er shal l not exceed t he manuf act ur er ' s r ecommendat i on. Fi el d pr eampl i f i er s and si gnal condi t i oner s shal l be i ncl uded when necessar y t o mai nt ai n t he accur acy f r om sensor t o t he pr ogr ammabl e l ogi c cont r ol l er or r ecor der .

2. 4. 2 Of f - Gas or Vapor Ser vi ce

Sensor s and met er s i n of f - gas or vapor ser vi ce shal l be r at ed f or cont i nuous dut y ser vi ce at f l ui d appr oach vel oci t i es f r om 500 t o 5000 f pm wi t h cor r espondi ngl y hi gher const r i ct i on vel oci t i es over a f l ui d t emper at ur e r ange f r om mi nus 0 degr ees F t o 105 degr ees F at pr essur es f r om mi nus 7. 2 psi gage up t o 15 psi gage.

2. 4. 3 Li qui d Ser vi ce

Sensor s and met er s i n l i qui d ser v i ce shal l be r at ed f or cont i nuous dut y ser vi ce at f l ui d appr oach vel oci t i es f r om 2. 5 f t / s t o 15 f t / s wi t h cor r espondi ngl y hi gher const r i ct i on vel oci t i es over a f l ui d t emper at ur e r ange f r om 32 degr ees F t o 105 degr ees F at pr essur es up t o 50 psi gage.

2. 4. 4 Fl ow Sensor

Li qui d f l ow i ndi cat i on shal l be pr ovi ded i n gpm. Of f - gas f l ow i ndi cat i on shal l be pr ovi ded i n cubi c f eet per mi nut e. Pr essur e t aps shal l i ncor por at e appr opr i at e snubber s. Unl ess i ndi cat ed ot her wi se, t he f l ow t r ansmi t t er shal l pr oduce a s i gnal t hat i s pr opor t i onal t o t he vol umet r i c f l ow r at e, compensat ed f or f l ui d t emper at ur e, and shal l have an accur acy of pl us or mi nus 1 per cent of t he act ual f l ow. Fl ow t r ansmi t t er shal l be l ocat ed wi t hi n 15 f eet of t he f l ow el ement . The f l ow t r ansmi t t er shal l i ncl ude a di gi t al r eadout of t he vol umet r i c f l ow r at e t o 3 s i gni f i cant f i gur es. The cont r ol l er shal l be pr ovi ded wi t h a mi ni mum of t hr ee al ar m l i ght s. The f i r st al ar m l i ght shal l i ndi cat e when t he l ower ( war ni ng) det ect i on l evel has been exceeded. The second al ar m l i ght shal l i ndi cat e when t he upper ( al ar m) det ect i on l evel has been exceeded. The t hi r d al ar m l i ght shal l i ndi cat e a cont r ol l er mal f unct i on, i nc l udi ng l oss of power or l oss of sensor i nput . The al ar m l evel s shal l be i ndi v i dual l y adj ust abl e. The cont r ol l er shal l be pr ovi ded wi t h an audi bl e war ni ng hor n t hat sounds when t he upper det ect i on l evel has been exceeded, and a war ni ng hor n s i l ence but t on. The cont r ol l er shal l pr ovi de a 4- 20 mAdc out put s i gnal t o t he pr ogr ammabl e l ogi c cont r ol l er , pr opor t i onal t o t he measur ed par amet er . The cont r ol l er shal l be pr ovi ded wi t h an i nt er nal bat t er y t o mai nt ai n oper at i on f or a mi ni mum of 12 hour s i f power i s l ost . Fl ow r at e shal l be cont r ol l ed t o wi t hi n pl us or mi nus 3 per cent of t he desi gn f l ow.

2. 4. 4. 1 Magnet i c Fl owmet er

Magnet i c f l owmet er shal l be non- i nt r usi ve and shal l measur e f l ui d f l ow

SECTI ON 40 95 00 Page 10 t hr ough t he use of a sel f gener at ed magnet i c f i el d. The magnet i c f l ow el ement shal l be encapsul at ed i n t ype 300 st ai nl ess st eel . Fl owmet er shal l be capabl e of measur i ng c l ean or di r t y f l ow up t o a maxi mum f l ow vel oci t y of 10 f ps. The met er i ng t ube shal l be const r uct ed of 316 st ai nl ess st eel .

The maxi mum pr essur e dr op acr oss t he met er and appur t enances shal l be 5 psi at t he maxi mum f l ow r at e.

2. 4. 4. 2 Ul t r asoni c Fl owmet er

1. The f l ow met er el ect r oni cs and connect i ons wi l l be housed i n a PPO Pol yphenyl ene Oxi de, Nor yl , NEMA4X/ I P66, l ockabl e encl osur e sui t abl e f or condui t connect i on.

2. Basi c const r uct i on wi l l consi st of a t wo- pi ece el ect r oni cs encl osur e, f r ont panel , and door .

3. The encl osur e door wi l l have a c l ear pol ycar bonat e wi ndow f or v i ewi ng t he LCD, opt i onal mechani cal t ot al i zer , and LED i ndi cat or wi t hout openi ng t he door .

4. Connect i ons wi l l be accessi bl e f or addi t i on and r emoval of opt i onal devi ces by unl at chi ng t he door and t hen openi ng t he f r ont panel on t he enclosure.

5. The f l ow met er shal l i ncl ude a st ai nl ess st eel br acket f or wal l mount i ng, and shal l al so be sui t abl e f or mount i ng on a r ack or i nsi de a consol e encl osur e.

6. Oper at i ng and st or age t emper at ur e shal l be - 20 t o 60° C ( - 4 t o 140° F) .

7. The f l ow met er ' s pr i mar y user i nt er f ace shal l i ncl ude a t act i l e keypad wi t h audi bl e f eedback, and 4- i nch, 320x240, backl i t l i qui d cr yst al di spl ay wi t h gr aphi ng f unct i onal i t y .

8. The f l ow met er wi l l have a t wo- col or LED i ndi cat or next t o t he di spl ay t o i ndi cat e act i vat ed al ar ms/ event s.

9. I nput power shal l be nomi nal 12VDC.

a. The f l ow met er ' s i nt er nal mai ns power suppl y wi l l oper at e on 100VAC, 50/ 60Hz or 240VAC, 50/ 60Hz l i ne power .

b. The f l ow met er shal l have t he pr ovi s i on t o be power ed by an ext er nal 12VDC sour ce.

10. TI ENet devi ce connect i on( s) shal l be per f or med by wi r i ng t o easi l y accessi bl e t er mi nal st r i ps and f ol l owi ng s i mpl e i nst r uct i ons pr i nt ed on t he c i r cui t boar d assembl y.

a. The f l ow met er shal l pr ovi de nomi nal 12VDC out put power t o connect ed TI ENet devi ces.

11. Measur ed l i qui d l evel r eadi ngs shal l be conver t ed i nt o cor r espondi ng f l ow r at e r eadi ngs usi ng i nt er nal conver si on al gor i t hms. The f l ow met er shal l cont ai n conver si ons f or V- not ch, r ect angul ar and Ci pol l et t i wei r s, and Par shal l , Pal mer - Bowl us, t r apezoi dal , and H f l umes. The f l ow met er shal l accept 4 set s of l evel - f l ow r at e poi nt s, wi t h up t o 50 pai r s of poi nt s i n each set . The f l ow met er shal l accept a user - def i ned, one- or t wo- t er m, l evel - f l ow r at e pol ynomi al equat i on. The f l ow met er shal l al so be capabl e of oper at i ng i n a l evel - onl y mode.

2. 4. 5 Level I nst r ument at i on

Pr essur e t aps shal l i ncor por at e appr opr i at e snubber s. Rel ays and housi ng shal l be i nt r i ns i cal l y saf e or expl osi on pr oof as r equi r ed by t he NFPA hazar d r at i ng f or compat i bi l i t y wi t h t he cont ent s of t he t ank or sump.

2. 4. 5. 1 Submer si bl e Level ( Pr essur e) Tr ansducer

The l evel t r ansducer shal l consi st of a non- f oul i ng t ype submer si bl e pr essur e sensor t hat i s sui t abl e f or di r ect submer si on i nt o t he t hi ckened sol i ds wast ewat er pr ocess. Sensor di aphr agm shal l be 2 i nches di amet er

SECTI ON 40 95 00 Page 11 mi ni mum. The sensor shal l be a sol i d- st at e var i abl e capaci t ance or di f f used si l i con semi conduct or t ype t hat shal l pr ovi de an out put s i gnal di r ect l y pr opor t i onal t o t he sensed pr essur e over a f act or y- cal i br at ed r ange. The sensor assembl y shal l have a st ai nl ess st eel , t i t ani um, or PVC housi ng and shal l be suppor t ed by a Tef l on, pol yet hyl ene or ur et hane j acket ed cabl e wi t h a mi ni mum 200 pound t est st r engt h. The sensor cabl e shal l be of suf f i c i ent l engt h so t hat no spl i ce or connect or i s r equi r ed i n a wet , hazar dous, or i naccessi bl e ar ea. The vent t ube t er mi nat i on poi nt shal l be pr ot ect ed f r om di r t and moi st ur e by a NEMA 4X t er mi nat i on box t hat i ncl udes a bel l ows or bl adder bag and si gnal sur ge pr ot ect i on i f r equi r ed.

The t r ansmi t t er shal l have a t wo- wi r e t ype 4- 20 mA dc cur r ent out put t hat i s pr opor t i onal t o l evel . The out put shal l have sur ge pr ot ect i on, and shal l not be damaged by r ever se pol ar i t y. The t r ansmi t t er shal l be sui t abl e f or an oper at i ng t emper at ur e r ange of 0° t o +50° C. Accur acy of t he l evel t r ansmi t t er shal l be ±0. 25 per cent " best st r ai ght l i ne" , wi t h an over al l combi ned accur acy of ±1 per cent over t he ent i r e oper at i ng t emper at ur e/ pr essur e r ange.

Submer si bl e pr essur e t r ansmi t t er s pr ovi ded t o measur e l evel i n t anks or wet wel l s i ndi cat i ng " scum" or " s l udge" shal l be pr ovi ded wi t h l ar ge shi el ded di aphr agms speci f i cal l y desi gned f or s l udge and hi gh v i scous materials.

Accept abl e Manuf act ur er s: Cont egr a or equal as pr ovi ded by Measur ement Speci al t i es ( KPSI ) , Kel l er , Endr ess + Hauser , or Si emens.

2. 4. 5. 2 Di spl acement Type Level Swi t ch

Li qui d l evel swi t ch shal l be di spl acement t ype, havi ng a mi ni mum of t wo t andem f l oat s wi t h each f l oat i ndependent l y act i vat i ng a set of For m C cont act s at t wo di f f er ent l evel set t i ngs. Each swi t ch shal l have a nar r ow di f f er ent i al band. The mount i ng connect i ons shal l be t hr eaded, f l anged or sur f ace mount ed t o sui t t he appl i cat i on. Al l sur f aces i n cont act wi t h t he t ank cont ent s shal l be aust eni t i c st ai nl ess st eel . The swi t ch encl osur e shal l be expl osi on pr oof f or use i n a hazar dous envi r onment , compl et e wi t h a seal ed wat er t i ght j unct i on box, t er mi nal bl ock, and mount i ng pl at e.

Each set of cont act s shal l be snap act i on, dr y cont act t ype wi t h one nor mal l y open and one nor mal l y c l osed, cont act r at ed i n accor dance wi t h NEMA I CS 1. The swi t ch shal l be act uat ed by a magnet i cal l y equi pped st ai nl ess st eel di spl acer . Repet i t i ve accur acy shal l be pl us or mi nus 1/ 4 i nch of act ual di spl acer set t i ng.

2. 4. 5. 3 Sl udge Bl anket Level Pr obe

I n t he upf l ow cl ar i f i er s, t her e wi l l be s l udge l evel moni t or s i nst al l ed i n each t ank. The moni t or s shal l be ul t r asoni c and t r ansmi t a 4- 20 mAc si gnal t o t he PLC f or di spl ay at t he Oper at or ' s Wor kst at i on. The pr obes shal l be pr ovi ded wi t h l ar ge shi el ded di aphr agms speci f i cal l y desi gned f or s l udge and hi gh v i scous mat er i al s. The uni t shal l al so be suppl i ed wi t h a l ocal cont r ol l er t hat di spl ays t he s l udge bl anket l evel i n t he r espect i ve t ank.

Measur ement r ange of t he uni t shal l be 0. 6 t o 40 f eet . Resol ut i on of t he uni t shal l be 0. 09 f eet . Accur acy shal l be +/ - 0. 33 f eet . Oper at i ng Temper at ur e of 35 t o 122 degr ees Far enhei t . The mat er i al s of const r uct i on shal l be a s i l i con wi per , st ai nl ess st eel body, and pol yoxymet hyl ene f ace.

Cabl e l engt h i s 33 f eet . Uni t s shal l be f act or y cal i br at ed. A l ever t ype sensor suppor t shal l be pr ovi ded t hat wi l l al l ow f or t he sensor t o l i f t out of t he wat er and l ower back i nt o posi t i on wi t h each pass of t he c l ar i f i er scum ar m wi t ht out any damage t o t he mount or l evel pr obe.

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2. 4. 5. 4 Ul t r asoni c Sensor

The sensor shal l be mi cr opr ocessor based and shal l pr ovi de cont i nuous, non- cont act l evel measur ement of l i qui ds and sol i ds ut i l i z i ng mi cr owave pul sed t i me of f l i ght measur ement met hod. The sensor shal l oper at e i n a f r equency band appr oved f or i ndust r i al use. The sensor shal l be capabl e of measur i ng i n a r ange of 0 t o 20 f eet wi t h an accur acy of pl us or mi nus 1 per cent of f ul l scal e. The sensor shal l be capabl e of di st i ngui shi ng bet ween r eal echoes, r ef l ect i ons and backgr ound noi se. The sensor shal l aut omat i cal l y compensat e f or t emper at ur e changes. The sensor shal l be capabl e of oper at i ng i n a t emper at ur e r ange f r om mi nus 15 degr ees F t o 120 degr ees F. Assembl y shal l be i nc l ude sur f ace mount i ng br acket of suf f i c i ent s i ze t o el i mi nat e echoi ng and sui t abl e f or t he i nst al l ed envi r onment i ndi cat ed. Mount i ng assembl y shal l be sui t abl e f or ser vi ce wi t hout r equi r i ng ent r y or dr ai nage of t he chemi cal st or age t anks wher e l evel i s bei ng measur ed. The sensor shal l be const r uct ed of st ai nl ess st eel and be sui t abl e f or i nst al l at i on i n a bul k chemi cal st or age t ank.

2. 4. 6 Pr essur e I nst r ument at i on

Pr essur e t aps shal l i ncor por at e appr opr i at e snubber s.

2. 4. 6. 1 Pr essur e Sensor

The sensi ng el ement shal l be ei t her capsul e, di aphr agm, bel l ows, Bour don t ube, or sol i d st at e as appl i cabl e f or t he i nst al l at i on. The pr essur e t r ansducer shal l wi t hst and up t o 300 per cent of r at ed pr essur e, wi t h an accur acy of pl us or mi nus 1. 0 per cent of f ul l scal e sel ect ed t o put t he desi gn r ange of t he measur ed pr essur e i n t he mi ddl e t hi r d of t he t r ansducer ' s r ange. Pr essur e shal l be measur ed i n psi gage wi t h a r ange, pl us or mi nus 10 per cent of desi gn r ange.

2. 4. 6. 2 Pr essur e Swi t ch

Sensor s shal l be di aphr agm or Bour don t ube and shal l be const r uct ed of 316 st ai nl ess st eel . Pr essur e swi t ch shal l have a r epet i t i ve accur acy of pl us or mi nus 5. 0 per cent of t he oper at i ng r ange and shal l wi t hst and up t o 150 per cent of r at ed pr essur e. Swi t ch act uat i on set poi nt shal l be adj ust abl e over t he oper at i ng pr essur e r ange wi t h a di f f er ent i al adj ust ment span of 20 40per cent of t he r ange of t he swi t ch. The swi t ch shal l have For m C snap- act i on cont act s r at ed i n accor dance wi t h NEMA I CS 1.

2. 4. 7 Pr ocess Anal yt i cal I nst r ument at i on

Pr obes shal l be easi l y r emovabl e wi t hout i nt er r upt i ng ser vi ce. Sensor and cont r ol l er const r uct i on shal l be sui t abl e f or oper at i on i n t he moni t or ed medi um. The cont r ol l er shal l be pr ovi ded wi t h a mi ni mum of t hr ee al ar m l i ght s. The f i r st al ar m l i ght shal l i ndi cat e when t he l ower ( war ni ng) det ect i on l evel has been exceeded. The second al ar m l i ght hal l i ndi cat e when t he upper ( al ar m) det ect i on l evel has been exceeded. The t hi r d al ar m l i ght shal l i ndi cat e a cont r ol l er mal f unct i on, i nc l udi ng l oss of power or l oss of sensor i nput . The al ar m l evel s shal l be i ndi v i dual l y adj ust abl e.

The cont r ol l er shal l be pr ovi ded wi t h an audi bl e war ni ng hor n t hat sounds when t he upper det ect i on l evel has been exceeded, and a war ni ng hor n s i l ence but t on. The cont r ol l er shal l pr ovi de a 4- 20 mAdc out put s i gnal t o t he pr ogr ammabl e l ogi c cont r ol l er , pr opor t i onal t o t he measur ed par amet er .

The cont r ol l er shal l be pr ovi ded wi t h an i nt er nal bat t er y t o mai nt ai n oper at i on f or a mi ni mum of 12 hour s i f power i s l ost .

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2. 4. 7. 1 Combust i bl e Gas

Combust i bl e gas sensor shal l be pr ovi ded wi t h a means t o col l ect r epr esent at i ve cont i nuous sampl es and measur e f or t he pr esence of expl osi ve vapor s. Combust i bl e gas sensor shal l be poi son r esi st ant . Measur i ng r ange shal l be f r om 0 per cent of t he l ower expl osi ve l i mi t ( LEL) t o 100 per cent of t he l ower expl osi ve l i mi t ( LEL) . Response t i me shal l be l ess t han 10 seconds t o i ndi cat e 50 per cent LEL when exposed t o 100 per cent LEL. Zer o dr i f t shal l be l ess t han 3 per cent per year . The sensor shal l have a mi ni mum oper at i onal l i f e of 1 year . The syst em shal l be pr ovi ded wi t h days of zer o and cal i br at i on gas.

2. 4. 7. 2 Oxygen Reduct i on Pot ent i al ( ORP) and pH Moni t or i ng

The sensor shal l be submer si bl e t ype. Sensor shal l have a r ange of pl us or mi nus 1500 mV and shal l have an accur acy of pl us or mi nus 0. 5 per cent of sensor span. The sensor shal l aut omat i cal l y compensat e f or t emper at ur e over t he t emper at ur e r ange. The sensor body shal l be st ai nl ess st eel and sui t abl e f or i mmer si on.

The sensor shal l be submer si bl e. Sensor shal l have a r ange of - 2 pH uni t s t o 14 pH uni t s and shal l have an accur acy of pl us or mi nus 0. 01 pH uni t .

The sensor shal l aut omat i cal l y compensat e f or t emper at ur e over t he t emper at ur e r ange.