SPSPSPSPPSPSPSPSPSPSPPSPSPSPSPPSPSP

SPS-KPS M 3001-0839

SMC 패널 물탱크SPS-KPS M 3001-0839:2019

한국프라스틱공업협동조합연합회2019년 08월 20일 개정

SPS-KPS M 3001-0839:2019

심 의 : 단체표준심사위원회

원안작성협력 : 한국플라스틱시험원

성 명 근 무 처 직 위

(위원장) 계 형 산 목원대학교 교 수

(위 원) 박 형 근 한국화학융합시험연구원 지 원 장

안 병 권 한국건설생활환경시험연구원 센 터 장

김 성 훈 케이유피피㈜ 상 무 이 사

추 연 옥 영광산업 대 표 이 사

최 점 석 ㈜세진에스엠씨 부 사 장

허 원 권 ㈜퍼팩트 대 표 이 사

박 광 억 일신화학공업㈜ 소 장

조 원 택 한국프라스틱공업협동조합연합회 이 사

(간 사) 강 민 철 한국플라스틱시험원 본 부 장

표준열람 : e나라 표준인증(http://www.standard.go.kr)

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

제 정 자：한국프라스틱공업협동조합연합회장 담당부처 : 한국플라스틱시험원 표준인증본부

제 정 : 1998년 11월 18일 개 정 : 2019년 08월 20일

확 인 : 2018년 12월 10일

심 의：한국프라스틱공업협동조합연합회 단체표준심사위원회

원안작성협력：한국플라스틱시험원

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

이 표준에 대한 의견 또는 질문은 e나라 표준인증 웹사이트를 이용하여 주십시오.

이 표준은 산업표준화법 시행규칙 제19조 및 단체표준 지원 및 촉진운영 요령 제11조

의 규정에 따라 매 3년마다 단체표준심의회에서 심의되어 확인, 개정 또는 폐지됩니

다.

성 명 근 무 처 직 위

(연구책임자) 주 상 혁 한국플라스틱시험원 수석연구원

(참여연구원) 장 성 원 한국플라스틱시험원 주임연구원

조 훈 한국플라스틱시험원 연 구 원

SPS-KPS M 3001-0839:2019

－i－

목 차

머 리 말 ···························································································································································· iv

1 적용범위 ···························································································································································· 1

2 인용표준 ···························································································································································· 1

3 용어와 정의 ······················································································································································ 13.1 SMC (sheet molding compound) ····································································································· 23.2 핀홀 ························································································································································· 23.3 기포 ························································································································································· 23.4 오염 ························································································································································· 23.5 균열 ························································································································································· 23.6 변형 ························································································································································· 23.7 맨홀 ························································································································································· 23.8 입수구 ····················································································································································· 23.9 급수구 ····················································································································································· 23.10 출수구 ··················································································································································· 23.11 몸체 ······················································································································································· 23.12 바닥 기초용 프레임 ··························································································································· 33.13 환기구 ··················································································································································· 33.14 수밀 재료 ············································································································································· 33.15 실담수량 ··············································································································································· 33.16 호칭용량 ··············································································································································· 33.17 패널 플렌지 ········································································································································· 33.18 물탱크 ··················································································································································· 3

4 재료 ···································································································································································· 34.1 수지(resin) ·············································································································································· 34.2 섬유 보강 ··············································································································································· 34.3 충전제, 착색제, 기타 첨가제 및 합성 섬유 ··················································································· 34.4 보온재 ····················································································································································· 4

5 모양 및 구조 ···················································································································································· 45.1 모양 ························································································································································· 45.2 물탱크의 구성 ······································································································································· 55.3 내부칸막이 ············································································································································· 55.4 사다리 ····················································································································································· 55.5 맨홀 ························································································································································· 55.6 환기구 ····················································································································································· 55.7 볼트 및 너트 ········································································································································· 5

5.7.1 외부용 조립볼트 ························································································································ 55.7.2 내부용 조립볼트 ························································································································ 5

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5.8 보강재 ····················································································································································· 65.8.1 기초보강재 ·································································································································· 65.8.2 외부보강재 ·································································································································· 65.8.3 내부보강재 ·································································································································· 6

6 물탱크의 품질 ·················································································································································· 76.1 겉모양 ····················································································································································· 76.2 위생안전기준 ········································································································································· 76.3 패널 ························································································································································· 7

6.3.1 패널 규격 ···································································································································· 76.3.2 패널의 치수 및 각의 허용차 ·································································································· 76.3.3 패널의 두께 ································································································································ 8

6.4 패널의 성능 ··········································································································································· 86.5 물탱크의 성능 ······································································································································· 9

7 시험 방법 ·························································································································································· 97.1 시험의 일반 조건 ································································································································· 9

7.1.1 시험실 상태 ································································································································ 97.1.2 시험체 ·········································································································································· 9

7.2 겉모양 시험 ········································································································································· 107.3 치수측정 ··············································································································································· 10

7.3.1 패널의 가로 및 세로 측정방법 ···························································································· 107.3.2 패널의 두께 측정방법 ············································································································ 107.3.3 패널 플렌지의 폭(나비) 측정방법 ······················································································· 107.3.4 패널 플렌지의 두께 측정방법 ······························································································ 10

7.4 인장강도 시험 ····································································································································· 107.5 굴곡강도 및 굴곡탄성률 시험 ········································································································· 107.6 유리섬유 함량시험 ····························································································································· 10

7.6.1 충전제, 착색제를 포함하지 않은 SMC 패널 ···································································· 107.6.2 충전제, 착색제를 포함한 SMC 패널 ·················································································· 10

7.7 바콜경도 시험 ····································································································································· 117.8 흡수율 시험 ········································································································································· 117.9 정수압 시험 ········································································································································· 11

7.9.1 장치 ············································································································································ 117.9.2 계산방법 ···································································································································· 117.9.3 조작방법 ···································································································································· 11

7.10 누수 시험 ··········································································································································· 127.11 만수시 변형 시험 ····························································································································· 12

7.11.1 장치 ········································································································································· 127.11.2 조작 ········································································································································· 127.11.3 계산 ········································································································································· 12

8 검사 ·································································································································································· 138.1 검사 방법 ············································································································································· 138.2 시료채취 방법 ····································································································································· 13

9 표시 ·································································································································································· 13

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부속서 A (규정) 조립식 SMC 물탱크의 기초 및 설치 ············································································ 14

SPS-KPS M 3001-0839 해설 ························································································································· 15

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머 리 말

이 단체표준은 “산업표준화법 제27조(단체표준의 제정 등)”의 규정에 의거, “단체표준 지원 및 촉진운

영요령(기술표준원 고시 제2018-444호)”과 “단체표준인증업무규정(한국프라스틱공업협동조합연합회

규정)”에서 정하는 절차와 방법에 따라 이해관계자의 합의를 거쳐 제정하였다.

제정된 단체표준은 “단체표준 지원 및 촉진운영요령(기술표준원 고시 제2018-444호)” 제11조 제1항에

의거, 등록일로부터 3년마다 그 적부를 확인하게 되며, 이해관계인들의 요구가 있을 때에는 그 이전

이라도 개정될 수 있다. 기술 수준의 향상 등으로 개정의 필요성이 있는 경우 이해관계인들은 이 표

준의 개정을 한국프라스틱공업협동조합연합회에 요청할 수 있다.

이 표준은 저작권법의 보호 대상이 되는 저작물이다.

이 표준의 일부가 기술적 성질을 가진 특허권, 출원공개 이후의 특허출원, 실용신안권 또는 출원공개

후의 실용신안등록출원에 저촉될 가능성이 있다는 것에 주의를 환기한다. 기술표준원장 및 산업표준

심의회는 이러한 기술적 성질을 가진 특허권, 출원공개 이후의 특허출원, 실용신안권 또는 출원공개

후의 실용신안등록출원에 관계되는 확인에 대하여 책임을 지지 않는다.

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한국프라스틱공업협동조합연합회 단체표준

SPS-KPS M 3001-0839:2019

SMC 패널 물탱크Sheet molding compound panel sectional water tank

1 적용범위

이 표준은 일반수도 및 급수설비로 사용하는 유리 섬유 강화 폴리에스테르로 압축 성형되어 만들어

진 SMC(sheet molding compound) 패널로 조립된 물탱크(이하 “물탱크”라 한다) 및 구성 부품에 대

하여 규정한다.

비고 물탱크의 조건은 사용압력이 물탱크의 저장 깊이에 상응하는 정수압 기준이며 외력이나 압력

용기로 사용할 수 없다.

2 인용표준

다음의 인용표준은 전체 또는 부분적으로 이 표준의 적용을 위해 필수적이다. 발행연도가 표기된 인

용표준은 인용된 판만을 적용한다. 발행연도가 표기되지 않은 인용표준은 최신판(모든 추록을 포함)

을 적용한다.

KS B 1002, 6각 볼트

KS D 3503, 일반 구조용 압연 강재

KS D 3568, 일반 구조용 각형 강관

KS F 4811, 유리섬유강화 폴리에스테르 물탱크

KS L 2313, 유리 로빙

KS L 2315, 유리 로빙포

KS L 2317, 절단 유리 섬유 매트

KS L 2507, 유리질

KS L 2508, 유리 직물

KS M 3305, 섬유 강화 플라스틱용 액상 불포화 폴리에스테르 수지

KS M 6613, 수도용 고무

KS M ISO 291, 플라스틱 - 상태조절 및 시험을 위한 표준 분위기

KS M ISO 527-4, 플라스틱 - 인장 시험 - 제4부: 등방성 및 직교 섬유 강화 플라스틱 복합 재료의

시험 조건

KS M ISO 14125, 섬유강화 플라스틱 복합재료 - 굴곡성의 측정

3 용어와 정의

이 표준의 목적을 위하여 다음의 용어와 정의를 적용한다.

3.1

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SMC(sheet molding compound) FRP(fiber reinforced plastic) 압축 성형재료의 일종으로 불포화 폴리에스테르 수지에 충진제, 촉매, 이형제 등을 혼합한 원료로 절단된 유리섬유에 함침시킨 뒤 화학적으로 점도를 높여 점착성이 없고

성형성이 뛰어난 시트상의 성형 재료

3.2핀홀(pin hole)표면에 나타난 1mm미만의 구멍

3.3기포(bubble)공기 거품

3.4오염(contamination)이물 혼입, 자국 등에 따른 오염

3.5균열(crack)표면에 가늘고 불규칙하게 갈라진 상태

3.6변형(distortion)제품 모양의 뒤틀림

3.7맨홀(manhole)사람이 출입하기에 충분한 개구부가 있는 뚜껑과 맨홀부분의 총칭

3.8입수구(inlet)탱크 내부로 물이 들어가는 입구

3.9급수구(outlet)탱크 내부에서 물이 나오는 출구

3.10출수구(fitting)입수구, 급수구, 오버플로 출구, 배수구 등을 총칭

3.11몸체(body panel)탱크의 천장, 측판 및 바닥판을 말함

3.12바닥 기초용 프레임(steel base frame)

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탱크 본체를 올려놓는 기초 프레임

3.13실담수량(effective capacity)오버플로 출구에서 물이 나올 때까지의 탱크 내부 부피

3.14호칭용량(gross capacity)탱크의 폭(Width) × 길이(Length) × 높이(Height)에 의하여 계산된 부피

3.15패널 플렌지(panel flange)패널에서 90 °로 꺽여 나온 면

3.16조립식 물탱크(sectional water tank)최대 온도 45 ℃, 대기압에서 물을 저장하는 용도로 사용되는 패널로 조립된 직사각형 물탱크

4 패널의 재료

패널 제조에 사용되는 재료는 시트형상의 성형 컴파운드(이하 SMC)는 다음과 같은 재질로 구성하여

야 한다.

4.1 수지(resin)

패널 제조에 사용하는 수지는 KS M 3305에서 규정하는 불포화 폴리에스테르 수지 종류 중 Up-G Resin 또는 이와 동등 이상의 품질을 가진 것 이어야한다.

4.2 유리 섬유

패널 제조에 사용하는 유리 섬유는 KS F 4811 8.1.2에 적용하여, KS L 2313, KS L 2507, KS L2508, KS L 2317 및 KS L 2315에 규정하는 무알칼리성의 것과, 이것을 원료로 하여 가공한 것 또

는 이와 동등 이상의 품질을 가진 것이어야 한다.

4.3 충전제, 착색제, 기타 첨가제 및 합성 섬유

충전제, 착색제, 기타 첨가제 및 합성 섬유를 사용하는 경우, 이들의 품질 및 사용은 제품 품질이나

저장물의 수질에 해를 주지 않아야 한다.

4.4 보온재

보온 구조 패널 제조에 사용하는 보온재는 보온성이 우수한 경질 합성 발포체로 하고, 보온재 커버

는 SMC 재료 또는 내충격성 합성수지를 재료로 한다.

5 모양 및 구조

5.1 모양

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물탱크의 내부 표면과 덮개는 탱크 내부의 세척이 용이하여야 하며, 하나의 보기로 그림 1과 같다.

번호 명 칭 번호 명 칭 번호 명 칭

① 천 정 ⑥ 급 수 구 ⑪ 외 부 보 강 재

② 바 닥 판 ⑦ 오 버 플 로 출 구 ⑫ 기 초 보 강 재

③ 측 면 ⑧ 배 수 구 ⑬ 내 부 사 다 리

④ 맨 홀 ⑨ 환 기 구 ⑭ 외 부 사 다 리

⑤ 입 수 구 ⑩ 내 부 보 강 재

그림 1 – 물탱크 (보기)

5.2 물탱크의 구성

탱크는 바닥면과 측면으로 구성되며 모든 면은 플랜지 된 SMC 패널로 조립 되어야 하며 이음 실링

재로 간격을 봉하여야 한다. 필요한 경우 각 패널의 플랜지는 매립형 또는 노출형이 모두 허용된다.

5.3 내부칸막이

필요한 경우에는, SMC 시트 및 패널로 구성된 격벽으로 물탱크를 2개 이상의 구획으로 구분할 수

있다. 이때 사용되는 패널은 칸막이 전용 패널을 사용하여, 누수 방지가 되어야 한다. 5.4 사다리

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높이 1.5 m 이상의 물탱크는 내부 및 외부 접근 사다리를 갖추어야 한다. 외부 사다리의 필수 요건

은 플로어 이상의 탱크 높이를 고려하여 하여야 한다. 모든 내부 사다리들은 부식에 견딜 수 있는

재질(PVC 또는 FRP)이어야 되며 위생상 무해한 제품이어야 된다.

5.5 맨홀

저장용량이 5 m3를 초과하는 물탱크의 경우에는 사각형의 경우 각변의 길이가 900 mm 이상(원형의

경우 지름이 900 mm 이상)의 맨홀을 SMC재질로 된 맨홀 전용 패널이 사용되어야 한다. 이때 빗물

이나 먼지의 유입과 해충의 침입을 방지할 수 있어야 한다. 다만, 5 m3 이하일 경우의 맨홀은 각변

또는 지름을 600 mm 이상으로 할 수 있다.

5.6 환기구

합성수지 재질(성형품)로 곤충의 침입 및 이물질의 혼입을 막을 수 있는 방충망이 삽입 된 구조이어

야 한다.

비고 환기구의 크기는 지름 50 mm 또는 100 mm로 구분되며, 수량 및 크기는 당사자 간의 협의에

따른다.

5.7 볼트 및 너트

5.7.1 외부용 조립볼트

외부용 조립볼트는 KS B 1002에 규정된 것 또는 이와 동등 이상의 품질을 가진 것으로 볼트 지름이

M 10 이상이며, 표면은 부식을 방지할 수 있도록 용융아연도금 또는 데이크론 도금으로 처리된 것이

어야 한다.

5.7.2 내부용 조립볼트

내부용 조립볼트는 용융아연도금 또는 데이크론 도금한 연강에 고무 라이닝 볼트, 플라스틱 라이닝

볼트 및 스테인리스강 볼트로 녹 발생이 없어야 하며, 고무 재질은 KS M 6613에 규정된 것을 사용

하여야 한다. 5.8 보강재

보강재는 물탱크가 설치되는 공간과 구조에 따라 내부보강재 및 외부보강재를 선택하여 사용할 수

있으며, 또는 내·외부보강재를 같이 사용할 수 있다.

5.8.1 기초보강재

기초 보강재는 표 1과 같이 KS D 3503 또는 KS D 3568에 규정된 것을 사용하여야 하며, 표면은

도금 두께가 60 ㎛ 이상의 용융아연 도금으로 처리된 것이어야 한다. 다만, 앵글 또는 잔넬 이외에

보강재를 사용할 경우 동등 이상의 제품을 사용하여야 한다.

표 1 – 기초보강재

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물탱크의 높이(m) 기초보강재 치수(mm)

2.5 이하 앵글 75 × 75 × 6 t 이상 또는 각형 강관 100 × 50 × 2 t 이상

2.5 초과 ~ 5.0 미만 잔넬 125 × 65 × 6 × 8 t 이상 또는 각형 강관 100 × 50 × 2.9 t 이상

5.0 ~ 6.0 잔넬 150 × 75 × 6.5 × 10 t 이상 또는 각형 강관 100 × 50 × 4 t 이상

5.8.2 외부보강재

외부보강재는 표 2와 같이 KS D 3503의 소재로 가공한 것에 용융 아연도금으로 처리된 것이어야

한다.

표 2 – 외부보강재

부품명 사용위치 재 질 재료규격

평철 보강재 측판접합부 SS275+용융아연도금앵글형 : 3 mm 이상

PLATE형 : 3 mm 이상

코너 프레임 측판코너부 SS275+용융아연도금 ANGLE : 3 mm 이상

코너 브라켓측판코너부

(높이가 2.5 m이상)SS275+용융아연도금 PLATE형 : 6 mm 이상

STAY 보강

브라켓측판 SS275+용융아연도금

6 mm 이상(하단)6 mm 이상(상단)

5.8.3 내부보강재

내부 보강재는 수질에 해를 주지 않은 합성 수지제로 표면을 코팅한 연강, 스테인리스강 STS 304재

질 또는 이와 동등 이상의 재질로 인체에 해로움이 없고 녹이 발생되지 않아야 한다. 내부보강재로

사용되는 자재의 기준은 표 3과 같다.

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표 3 – 내부보강재

부품명 사용위치 재 질 규 격(mm) 비 고

환봉보강재 내부측판STS304 재질 또는

이와 동등 이상의 재질지름 10.5 이상 1 m 간격

상판지지대보강재

교차점

FRP 인발

물탱크 높이 3 m 이하

50(가로) × 50(세로) × 3(두께) 이상

-물탱크 높이 3 m 초과

50(가로) × 50(세로) × 5(두께) 이상

uPVC(VP) PIPE Φ 50(지름) × 4.5(두께) 이상

평철 보강재칸막이

(상부 1 m)STS304 재질 또는

이와 동등 이상의 재질두께 3 이상

판형 또는

앵글형

환봉보강

브라켓측판

STS304 재질 또는

이와 동등 이상의 재질두께 5 이상

상단 및

하단

6 물탱크의 품질

6.1 겉모양

패널 내외면의 겉모양은 8.2의 시험방법에 따라 육안 검사하였을 때, 핀홀, 기포, 오염, 균열, 평활 불

량, 변형 등의 결함이 없어야 한다.

6.2 위생안전기준

수도용으로 사용되는 물탱크는 수도법 제14조에 따라 위생안전기준에 맞는지에 대하여 인증을 받아

야 한다.

6.3 패널

패널의 재질은 불포화폴리에스테르수지에 충진제, 촉매, 이형제 등을 혼합한 복합재에 유리섬유를 함

침 보강한 SMC를 프레스로 압축성형한 제품으로 음용수 저장시 유해하지 않는 재질이어야 한다.패널의 종류는 상부패널, 측면패널, 저면패널, 드레인패널, 맨홀패널로 구성되며, 필요에 따라 칸막이

패널과 피팅류 부착이 용이하도록 (0.5×1) m의 평판 패널을 사용한다.

6.3.1 패널 규격

패널의 규격은 각 변의 길이 1 000 × 2 000 mm, 1 000 × 1 500 mm, 1 000 × 1 300 mm, 1 000 × 1 000mm, 500 × 1 000 mm, 500 × 2 000 mm, 500 × 1 500 mm, 500 × 1 300 m 및 500 × 500 mm, 500 × 300mm, 1 000 × 300 mm로 한다. 또한 패널 조립 플랜지의 폭(나비)는 단위 플랜지일 경우 70 mm이상

이어야 한다. 다만, 수압을 받지 않는 부분(상판)은 60 mm이상으로 한다.

6.3.2 패널의 치수 및 각의 허용차

각 패널의 치수 및 각의 허용차는 호칭치수의 ± 0.3 % 이내이어야 한다.

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6.3.3 패널의 두께

패널의 두께는 탱크 높이 및 적용 부위에 따라 작용하는 하중이 다르므로 위치별 패널의 최소 평균

두께는 표 4의 최소 평균 두께 이상이어야 한다.

표 4 – 물탱크의 높이 별 패널의 최소 평균 두께

구 분물탱크의 높이별 패널의 최소 평균 두께

플랜지부

평균두께1 m 1.5 m 2 m 2.5 m 3 m 3.5 m 4.0 m 4.5 m 5 m 5.5 m 6 m

천 정 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 6.0

측 상 - - - 4.5 4.5 4.5 4.5 4.5 4.5 4.5 4.5 10.0

측 중(1) - - - - - 6.0 7.0 6.0 7.0 6.0 7.0 10.0

측 중(2) - - - - - - - 7.5 8.5 7.5 8.5 10.0

측 중(3) - - - - - - - - - 9.5 10.0 10.0

측 하 4.5 4.5 4.5 6.0 7.0 7.5 8.5 9.5 10.0 10.5 11.0 10.0

저 면 4.5 4.5 4.5 6.0 7.0 7.5 8.5 9.5 10.0 10.5 11.0 10.0

드레인 5.0 5.5 5.5 6.0 7.0 8.0 9.0 10.0 10.0 11.0 11.0 10.0

단위 : mm

6.4 패널의 성능

패널의 성능은 표 6에 적합하여야 한다.

표 6 – 패널의 성능

6.5 물탱크의 성능

품질 항목 성능 시험방법

인장 강도(MPa) 75 이상 7.4

굴곡 강도(MPa) 100 이상 7.5

굴곡 탄성률(MPa) 7 000 이상 7.5

유리 섬유 함량(%) 28 이상 7.6

바콜경도 35 이상 7.7

흡수율(%) 1.0 이하 7.8

정수압 패널 단면적이 받는 수압의 4배 이상 7.9

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물탱크의 성능은 표 7에 적합하여야 한다.

표 7 – 물탱크의 성능

시험항목 성능 기준 시험방법

누수시험 누수 없음 7.10

만수 시

변형시험

측면보강 리브 또는 플랜지의 최대 변형은 10 mm 또

는 길이의 1 % 중 작은 것을 초과할 수 없다. 7.11

바닥면 최대 변형은 10 mm를 초과할 수 없다. 7.11

7 시험방법

7.1 시험의 일반 조건

7.1.1 시험실 상태

물탱크 패널을 시험할 경우, 시험실의 온도 및 습도는 특별한 규정이 없는 한 KS M ISO 291에 규

정하는 상온ㆍ상습으로 한다.

7.1.2 시료

시료는 다음 3종으로 하고, 각 시험에 사용되는 시료와 시료의 수는 표 8에 따른다.

a) 1호 시료 : 탱크 전체

b) 2호 시료 : 패널에서 절취한 시험체 또는 패널 전체

c) 3호 시료 : 패널 성형과 동일 조건으로 제작한 시료

표 8 - 시험 항목별 시료

7.2 겉모양

시험항목 시료 시료의 수(개)

인장강도

2호 또는 3호

5굴곡강도

굴곡탄성율

유리섬유함량

3바콜경도

흡수율

정수압시험 2호

1누수시험1호

만수 시 변형시험

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패널 및 물탱크로부터 600 mm 떨어진 거리에서 육안으로 관찰하여 판정한다.

7.3 치수측정

7.3.1 패널의 가로길이 및 세로길이 측정방법

버니어캘리퍼스 또는 줄자를 이용하여 측정한다.

7.3.2 패널의 두께 측정방법

패널의 두께는 패널의 모서리 네곳을 포함하여 측정하여 최소값으로 한다.

7.3.3 패널 플랜지의 폭(나비) 측정방법

패널의 바깥쪽에서 버니어캘리퍼스 또는 줄자를 이용하여 패널 각변에 위치한 플랜지의 중앙부의 폭

(나비)을 측정하여 평균한다.

7.3.4 패널 플랜지의 두께 측정방법

패널 플랜지의 두께는 각변의 중앙부를 측정하여 최소값으로 한다.

7.4 인장강도 시험

KS M ISO 527-4에 따른다.

7.5 굴곡강도 및 굴곡탄성률 시험

KS M ISO 14125에 따른다.

7.6 유리섬유 함량시험

7.6.1 충전제, 착색제를 포함하지 않은 SMC 패널

유리섬유 함량시험 방법은 KS M 3305의 6.3.7에 따른다.

7.6.2 충전제, 착색제를 포함한 SMC 패널

수지 과다층을 제외한 시험체 3개 이상을 채취한다. 이것을 약 600 °C의 전기로에서 3시간 이상 가

열하여 수지분을 완전히 소각시키고 유리 성분과 충전제, 착색제의 재를 남아 있게 한다. 그리고 그

잔류분을 비커에 담고, 증류수로 세척하여 유리 성분과 충전제의 비중차를 이용하여 200메시 이상의

철망에 유리 성분만 채취한다.그 유리 성분을 약 150 ℃에서 3시간 이상 방치하여 수분을 완전히 제거시킨 후 다음 계산식에 따라

유리 섬유 함량(%)을 계산한다.

×

여기에서 W : 유리 섬유 함량(%)

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A : 처리 전의 시료 질량(g) B : 건조 후의 시료 질량(g)

7.7 바콜경도 시험

KS M 3305의 5.2.4에 따른다.

7.8 흡수율 시험

KS M 3305의 5.2.5에 따른다.

7.9 정수압 시험

7.9.1 장 치

수압기는 최소 0.2 MPa의 압력을 측정할 수 있는 단위 패널 수압기이며, 압력 게이지는 전체 범위에

서 ±1%의 정확도가 있는 0.01 MPa의 눈금으로 된 압력 게이지를 사용하여야 하고, 그림 3과 같은

기기를 갖추어야 한다.

그림 3 - 정수압 장치

7.9.2 계산방법

시험 압력 시험을 하기 위한 압력은 다음과 같이 계산한다.

P (MPa) = h × ρ × s

여기에서 h：조립식 물탱크 높이(mm) ρ：물탱크 안 유체의 밀도(N/mm3), 물의 경우 p = 9.8 × 10 -6 N/mm3

s：안전 계수(s = 4)

7.9.3 조 작

패널을 그림 3에 나타낸 것과 같이 단위 패널 수압기에 고정하고 단위 패널 수압기는 물로 채워져야

하며, 체임버는 완전이 공기를 제거한 후 압력이 P가 될 때까지 분당 0.005 MPa씩 규칙적으로 압력

을 증가시켜야 한다. 이 때, 패널에 파열, 크랙, 누수가 없으면 패널을 합격으로 한다.

7.10 누수 시험

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물탱크를 조립하여 지면으로부터 600 mm 이상의 높이를 가진 가대 위에 설치하고, 오버플로 수준까

지 물을 채운 후 24시간 이상 방치한 다음 누수가 있는지의 여부를 조사한다. 시험시간은 최소 24시

간 이어야 하며, 탱크가 채워진 후 최소 2시간 후에 시작되어야 한다. 제조업자가 탱크 설치 후 시험

기간을 연장하기로 동의하지 않는 한, 설치 후 10일 이내에 시험하여야 한다.

7.11 만수 시 변형 시험

7.11.1 장 치

그림 4와 같이 물탱크를 설치할 수 있도록 지면으로부터 600 mm 이상의 높이를 가진 기초 구조물이

있어야 하고, 변위를 측정할 다이얼 게이지는 0.01 mm 이하의 정밀도와 최소 20 mm 범위를 갖는 기

기이어야 한다.

그림 4 – 만수시 변형 시험

7.11.2 조 작

물탱크를 그림 4와 같이 기초 구조물 위에 설치하고, 다이얼 게이지는 최대 변화가 일어나는 측면

패널과 바닥 패널의 중심에 고정시킨다. 먼저 물을 채우기 전에 다이얼 게이지의 바늘을 0으로 조정

하고, 탱크의 오버플로까지 물이 채워진 상태에서 최대 변위를 즉시 기록하고 2시간 후에 같은 위치

에서 다시 측정하여 계산한다.

7.11.3 계 산

변형 δ(%)는 다음 식에 따라 계산한다.

×

여기에서 δ：변 형(%) d：최대 변위(바닥, 측판)(mm) H：물탱크의 높이(mm)

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8 검사

8.1 검사 방법

SMC 패널 물탱크는 7.의 시험방법에 따라 시험하고 6. 및 9.의 규정에 적합하여야 한다.

8.2 시료채취 방법

인수. 인도 당사자 사이의 협정에 따른다.

9 표시

라벨 또는 인쇄하여 다음 사항을 표시하고, 보기 쉬운 곳에 붙인다.

a) 제조자 명 또는 그 약호

b) 일반수도용 또는 급수설비용(용도 구분)c) 종류 및 호칭 용량(치수 등)d) 제조 연월 또는 로트 번호(조립형의 경우 조립일자)

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부속서 A(규정)

SMC 물탱크의 기초 및 설치

A.1 일반사항

모든 탱크는 구매자가 제공한 기초 위에 지지되어야 한다.

A.2 기초

기초가 평평한 콘크리트, 철 구조물, 지지벽 또는 기둥이든 간에 기초의 위쪽 표면은 평평하고, 수평

이며, 부분적으로 불규칙이 없어야 한다. 1 m 마다 2 mm내의 오차만 허용하며, 6 m 이내에서 총 6 mm만의 오차만 허용 한다. (측면 또는 대각선으로 측정 될 때) 간헐적인 지지대는 제조업자의 지시

사항을 준수하여 공간을 두어야 하며 한 방향으로 연속적이어야 한다.

기초가 서스펜드 바닥 또는 빔에 의하여 장치된다면, 탱크가 꽉 찬 경우에는 전체 편향은 경간의

1/500 를 초과 할 수 없도록 설계되어야 한다.

A.3 추가 제조업자의 필요 사항

연속 또는 불연속 기초 모두 저장기 또는 탱크의 디자인에 기인한 제조업자가 제공한 추가 필수 요

건을 준수하여야 한다.

A.4 조립

조립식 탱크는 제조업자의 지시 사항을 준수하여 조립되어야 한다.

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SPS-KPS M 3001-0839:2019

해 설

이 해설은 본체와 부속서에 규정한 사항, 참고로 기재한 사항과 이들에 관련된 사항을 설명하는 것

으로 표준의 일부는 아니다

1 개정의 동기

이 표준은 조달청이나 수요처에게 제품에 대한 객관적인 증거자료를 제시해 주며 구매를 원활하게

할 뿐 아니라 원가절감의 효과를 위하여 1998년에 제정되었다.

SMC 패널 물탱크는 기술 개발로 인해 품질 향상된 제품이 조달 계약되고 있으며 개정에 대한 요구

가 제기되고 있어 단체표준 개정을 통해 수요처 및 국민위생 안전의 신뢰도 확보에 기여하고, 국가

표준기본법에 적합한 국제단위계 적용하여 SMC 패널 물탱크 제품의 단체표준을 개정하고자 한다.

2 주요 개정 내용

1. 제품 특성에 적합한 표준명으로 변경함

2. (2. 인용표준) 개정 전 인용표준과 개정 후 인용표준의 시험방법 및 요구사항이 동일하여 대체함

3. 국가표준기본법에 따라 이 표준의 모든 단위에 국제단위계를 적용함

4. 수도법에 따른 위생안전기준을 적용함

개정 전 인용표준 개정 후 인용표준 대체 사유

KS M 3006 KS M ISO 527-4KS M 3006 폐지 및 국제표준

과의 부합화

KS M 3305 KS M ISO 14125KS M 3305가 인용한 KS M 3382의 폐지에 따라 대체

SPS-KPS M 3001-0839:2019

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